| // generated by "go run gen.go". DO NOT EDIT. |
| |
| package draw |
| |
| import ( |
| "image" |
| "image/color" |
| "math" |
| |
| "golang.org/x/image/math/f64" |
| ) |
| |
| func (z nnInterpolator) Scale(dst Image, dr image.Rectangle, src image.Image, sr image.Rectangle, op Op, opts *Options) { |
| // Try to simplify a Scale to a Copy when DstMask is not specified. |
| // If DstMask is not nil, Copy will call Scale back with same dr and sr, and cause stack overflow. |
| if dr.Size() == sr.Size() && (opts == nil || opts.DstMask == nil) { |
| Copy(dst, dr.Min, src, sr, op, opts) |
| return |
| } |
| |
| var o Options |
| if opts != nil { |
| o = *opts |
| } |
| |
| // adr is the affected destination pixels. |
| adr := dst.Bounds().Intersect(dr) |
| adr, o.DstMask = clipAffectedDestRect(adr, o.DstMask, o.DstMaskP) |
| if adr.Empty() || sr.Empty() { |
| return |
| } |
| // Make adr relative to dr.Min. |
| adr = adr.Sub(dr.Min) |
| if op == Over && o.SrcMask == nil && opaque(src) { |
| op = Src |
| } |
| |
| // sr is the source pixels. If it extends beyond the src bounds, |
| // we cannot use the type-specific fast paths, as they access |
| // the Pix fields directly without bounds checking. |
| // |
| // Similarly, the fast paths assume that the masks are nil. |
| if o.DstMask != nil || o.SrcMask != nil || !sr.In(src.Bounds()) { |
| switch op { |
| case Over: |
| z.scale_Image_Image_Over(dst, dr, adr, src, sr, &o) |
| case Src: |
| z.scale_Image_Image_Src(dst, dr, adr, src, sr, &o) |
| } |
| } else if _, ok := src.(*image.Uniform); ok { |
| Draw(dst, dr, src, src.Bounds().Min, op) |
| } else { |
| switch op { |
| case Over: |
| switch dst := dst.(type) { |
| case *image.RGBA: |
| switch src := src.(type) { |
| case *image.NRGBA: |
| z.scale_RGBA_NRGBA_Over(dst, dr, adr, src, sr, &o) |
| case *image.RGBA: |
| z.scale_RGBA_RGBA_Over(dst, dr, adr, src, sr, &o) |
| default: |
| z.scale_RGBA_Image_Over(dst, dr, adr, src, sr, &o) |
| } |
| default: |
| switch src := src.(type) { |
| default: |
| z.scale_Image_Image_Over(dst, dr, adr, src, sr, &o) |
| } |
| } |
| case Src: |
| switch dst := dst.(type) { |
| case *image.RGBA: |
| switch src := src.(type) { |
| case *image.Gray: |
| z.scale_RGBA_Gray_Src(dst, dr, adr, src, sr, &o) |
| case *image.NRGBA: |
| z.scale_RGBA_NRGBA_Src(dst, dr, adr, src, sr, &o) |
| case *image.RGBA: |
| z.scale_RGBA_RGBA_Src(dst, dr, adr, src, sr, &o) |
| case *image.YCbCr: |
| switch src.SubsampleRatio { |
| default: |
| z.scale_RGBA_Image_Src(dst, dr, adr, src, sr, &o) |
| case image.YCbCrSubsampleRatio444: |
| z.scale_RGBA_YCbCr444_Src(dst, dr, adr, src, sr, &o) |
| case image.YCbCrSubsampleRatio422: |
| z.scale_RGBA_YCbCr422_Src(dst, dr, adr, src, sr, &o) |
| case image.YCbCrSubsampleRatio420: |
| z.scale_RGBA_YCbCr420_Src(dst, dr, adr, src, sr, &o) |
| case image.YCbCrSubsampleRatio440: |
| z.scale_RGBA_YCbCr440_Src(dst, dr, adr, src, sr, &o) |
| } |
| default: |
| z.scale_RGBA_Image_Src(dst, dr, adr, src, sr, &o) |
| } |
| default: |
| switch src := src.(type) { |
| default: |
| z.scale_Image_Image_Src(dst, dr, adr, src, sr, &o) |
| } |
| } |
| } |
| } |
| } |
| |
| func (z nnInterpolator) Transform(dst Image, s2d f64.Aff3, src image.Image, sr image.Rectangle, op Op, opts *Options) { |
| // Try to simplify a Transform to a Copy. |
| if s2d[0] == 1 && s2d[1] == 0 && s2d[3] == 0 && s2d[4] == 1 { |
| dx := int(s2d[2]) |
| dy := int(s2d[5]) |
| if float64(dx) == s2d[2] && float64(dy) == s2d[5] { |
| Copy(dst, image.Point{X: sr.Min.X + dx, Y: sr.Min.X + dy}, src, sr, op, opts) |
| return |
| } |
| } |
| |
| var o Options |
| if opts != nil { |
| o = *opts |
| } |
| |
| dr := transformRect(&s2d, &sr) |
| // adr is the affected destination pixels. |
| adr := dst.Bounds().Intersect(dr) |
| adr, o.DstMask = clipAffectedDestRect(adr, o.DstMask, o.DstMaskP) |
| if adr.Empty() || sr.Empty() { |
| return |
| } |
| if op == Over && o.SrcMask == nil && opaque(src) { |
| op = Src |
| } |
| |
| d2s := invert(&s2d) |
| // bias is a translation of the mapping from dst coordinates to src |
| // coordinates such that the latter temporarily have non-negative X |
| // and Y coordinates. This allows us to write int(f) instead of |
| // int(math.Floor(f)), since "round to zero" and "round down" are |
| // equivalent when f >= 0, but the former is much cheaper. The X-- |
| // and Y-- are because the TransformLeaf methods have a "sx -= 0.5" |
| // adjustment. |
| bias := transformRect(&d2s, &adr).Min |
| bias.X-- |
| bias.Y-- |
| d2s[2] -= float64(bias.X) |
| d2s[5] -= float64(bias.Y) |
| // Make adr relative to dr.Min. |
| adr = adr.Sub(dr.Min) |
| // sr is the source pixels. If it extends beyond the src bounds, |
| // we cannot use the type-specific fast paths, as they access |
| // the Pix fields directly without bounds checking. |
| // |
| // Similarly, the fast paths assume that the masks are nil. |
| if o.DstMask != nil || o.SrcMask != nil || !sr.In(src.Bounds()) { |
| switch op { |
| case Over: |
| z.transform_Image_Image_Over(dst, dr, adr, &d2s, src, sr, bias, &o) |
| case Src: |
| z.transform_Image_Image_Src(dst, dr, adr, &d2s, src, sr, bias, &o) |
| } |
| } else if u, ok := src.(*image.Uniform); ok { |
| transform_Uniform(dst, dr, adr, &d2s, u, sr, bias, op) |
| } else { |
| switch op { |
| case Over: |
| switch dst := dst.(type) { |
| case *image.RGBA: |
| switch src := src.(type) { |
| case *image.NRGBA: |
| z.transform_RGBA_NRGBA_Over(dst, dr, adr, &d2s, src, sr, bias, &o) |
| case *image.RGBA: |
| z.transform_RGBA_RGBA_Over(dst, dr, adr, &d2s, src, sr, bias, &o) |
| default: |
| z.transform_RGBA_Image_Over(dst, dr, adr, &d2s, src, sr, bias, &o) |
| } |
| default: |
| switch src := src.(type) { |
| default: |
| z.transform_Image_Image_Over(dst, dr, adr, &d2s, src, sr, bias, &o) |
| } |
| } |
| case Src: |
| switch dst := dst.(type) { |
| case *image.RGBA: |
| switch src := src.(type) { |
| case *image.Gray: |
| z.transform_RGBA_Gray_Src(dst, dr, adr, &d2s, src, sr, bias, &o) |
| case *image.NRGBA: |
| z.transform_RGBA_NRGBA_Src(dst, dr, adr, &d2s, src, sr, bias, &o) |
| case *image.RGBA: |
| z.transform_RGBA_RGBA_Src(dst, dr, adr, &d2s, src, sr, bias, &o) |
| case *image.YCbCr: |
| switch src.SubsampleRatio { |
| default: |
| z.transform_RGBA_Image_Src(dst, dr, adr, &d2s, src, sr, bias, &o) |
| case image.YCbCrSubsampleRatio444: |
| z.transform_RGBA_YCbCr444_Src(dst, dr, adr, &d2s, src, sr, bias, &o) |
| case image.YCbCrSubsampleRatio422: |
| z.transform_RGBA_YCbCr422_Src(dst, dr, adr, &d2s, src, sr, bias, &o) |
| case image.YCbCrSubsampleRatio420: |
| z.transform_RGBA_YCbCr420_Src(dst, dr, adr, &d2s, src, sr, bias, &o) |
| case image.YCbCrSubsampleRatio440: |
| z.transform_RGBA_YCbCr440_Src(dst, dr, adr, &d2s, src, sr, bias, &o) |
| } |
| default: |
| z.transform_RGBA_Image_Src(dst, dr, adr, &d2s, src, sr, bias, &o) |
| } |
| default: |
| switch src := src.(type) { |
| default: |
| z.transform_Image_Image_Src(dst, dr, adr, &d2s, src, sr, bias, &o) |
| } |
| } |
| } |
| } |
| } |
| |
| func (nnInterpolator) scale_RGBA_Gray_Src(dst *image.RGBA, dr, adr image.Rectangle, src *image.Gray, sr image.Rectangle, opts *Options) { |
| dw2 := uint64(dr.Dx()) * 2 |
| dh2 := uint64(dr.Dy()) * 2 |
| sw := uint64(sr.Dx()) |
| sh := uint64(sr.Dy()) |
| for dy := int32(adr.Min.Y); dy < int32(adr.Max.Y); dy++ { |
| sy := (2*uint64(dy) + 1) * sh / dh2 |
| d := (dr.Min.Y+int(dy)-dst.Rect.Min.Y)*dst.Stride + (dr.Min.X+adr.Min.X-dst.Rect.Min.X)*4 |
| for dx := int32(adr.Min.X); dx < int32(adr.Max.X); dx, d = dx+1, d+4 { |
| sx := (2*uint64(dx) + 1) * sw / dw2 |
| pi := (sr.Min.Y+int(sy)-src.Rect.Min.Y)*src.Stride + (sr.Min.X + int(sx) - src.Rect.Min.X) |
| pr := uint32(src.Pix[pi]) * 0x101 |
| out := uint8(pr >> 8) |
| dst.Pix[d+0] = out |
| dst.Pix[d+1] = out |
| dst.Pix[d+2] = out |
| dst.Pix[d+3] = 0xff |
| } |
| } |
| } |
| |
| func (nnInterpolator) scale_RGBA_NRGBA_Over(dst *image.RGBA, dr, adr image.Rectangle, src *image.NRGBA, sr image.Rectangle, opts *Options) { |
| dw2 := uint64(dr.Dx()) * 2 |
| dh2 := uint64(dr.Dy()) * 2 |
| sw := uint64(sr.Dx()) |
| sh := uint64(sr.Dy()) |
| for dy := int32(adr.Min.Y); dy < int32(adr.Max.Y); dy++ { |
| sy := (2*uint64(dy) + 1) * sh / dh2 |
| d := (dr.Min.Y+int(dy)-dst.Rect.Min.Y)*dst.Stride + (dr.Min.X+adr.Min.X-dst.Rect.Min.X)*4 |
| for dx := int32(adr.Min.X); dx < int32(adr.Max.X); dx, d = dx+1, d+4 { |
| sx := (2*uint64(dx) + 1) * sw / dw2 |
| pi := (sr.Min.Y+int(sy)-src.Rect.Min.Y)*src.Stride + (sr.Min.X+int(sx)-src.Rect.Min.X)*4 |
| pa := uint32(src.Pix[pi+3]) * 0x101 |
| pr := uint32(src.Pix[pi+0]) * pa / 0xff |
| pg := uint32(src.Pix[pi+1]) * pa / 0xff |
| pb := uint32(src.Pix[pi+2]) * pa / 0xff |
| pa1 := (0xffff - pa) * 0x101 |
| dst.Pix[d+0] = uint8((uint32(dst.Pix[d+0])*pa1/0xffff + pr) >> 8) |
| dst.Pix[d+1] = uint8((uint32(dst.Pix[d+1])*pa1/0xffff + pg) >> 8) |
| dst.Pix[d+2] = uint8((uint32(dst.Pix[d+2])*pa1/0xffff + pb) >> 8) |
| dst.Pix[d+3] = uint8((uint32(dst.Pix[d+3])*pa1/0xffff + pa) >> 8) |
| } |
| } |
| } |
| |
| func (nnInterpolator) scale_RGBA_NRGBA_Src(dst *image.RGBA, dr, adr image.Rectangle, src *image.NRGBA, sr image.Rectangle, opts *Options) { |
| dw2 := uint64(dr.Dx()) * 2 |
| dh2 := uint64(dr.Dy()) * 2 |
| sw := uint64(sr.Dx()) |
| sh := uint64(sr.Dy()) |
| for dy := int32(adr.Min.Y); dy < int32(adr.Max.Y); dy++ { |
| sy := (2*uint64(dy) + 1) * sh / dh2 |
| d := (dr.Min.Y+int(dy)-dst.Rect.Min.Y)*dst.Stride + (dr.Min.X+adr.Min.X-dst.Rect.Min.X)*4 |
| for dx := int32(adr.Min.X); dx < int32(adr.Max.X); dx, d = dx+1, d+4 { |
| sx := (2*uint64(dx) + 1) * sw / dw2 |
| pi := (sr.Min.Y+int(sy)-src.Rect.Min.Y)*src.Stride + (sr.Min.X+int(sx)-src.Rect.Min.X)*4 |
| pa := uint32(src.Pix[pi+3]) * 0x101 |
| pr := uint32(src.Pix[pi+0]) * pa / 0xff |
| pg := uint32(src.Pix[pi+1]) * pa / 0xff |
| pb := uint32(src.Pix[pi+2]) * pa / 0xff |
| dst.Pix[d+0] = uint8(pr >> 8) |
| dst.Pix[d+1] = uint8(pg >> 8) |
| dst.Pix[d+2] = uint8(pb >> 8) |
| dst.Pix[d+3] = uint8(pa >> 8) |
| } |
| } |
| } |
| |
| func (nnInterpolator) scale_RGBA_RGBA_Over(dst *image.RGBA, dr, adr image.Rectangle, src *image.RGBA, sr image.Rectangle, opts *Options) { |
| dw2 := uint64(dr.Dx()) * 2 |
| dh2 := uint64(dr.Dy()) * 2 |
| sw := uint64(sr.Dx()) |
| sh := uint64(sr.Dy()) |
| for dy := int32(adr.Min.Y); dy < int32(adr.Max.Y); dy++ { |
| sy := (2*uint64(dy) + 1) * sh / dh2 |
| d := (dr.Min.Y+int(dy)-dst.Rect.Min.Y)*dst.Stride + (dr.Min.X+adr.Min.X-dst.Rect.Min.X)*4 |
| for dx := int32(adr.Min.X); dx < int32(adr.Max.X); dx, d = dx+1, d+4 { |
| sx := (2*uint64(dx) + 1) * sw / dw2 |
| pi := (sr.Min.Y+int(sy)-src.Rect.Min.Y)*src.Stride + (sr.Min.X+int(sx)-src.Rect.Min.X)*4 |
| pr := uint32(src.Pix[pi+0]) * 0x101 |
| pg := uint32(src.Pix[pi+1]) * 0x101 |
| pb := uint32(src.Pix[pi+2]) * 0x101 |
| pa := uint32(src.Pix[pi+3]) * 0x101 |
| pa1 := (0xffff - pa) * 0x101 |
| dst.Pix[d+0] = uint8((uint32(dst.Pix[d+0])*pa1/0xffff + pr) >> 8) |
| dst.Pix[d+1] = uint8((uint32(dst.Pix[d+1])*pa1/0xffff + pg) >> 8) |
| dst.Pix[d+2] = uint8((uint32(dst.Pix[d+2])*pa1/0xffff + pb) >> 8) |
| dst.Pix[d+3] = uint8((uint32(dst.Pix[d+3])*pa1/0xffff + pa) >> 8) |
| } |
| } |
| } |
| |
| func (nnInterpolator) scale_RGBA_RGBA_Src(dst *image.RGBA, dr, adr image.Rectangle, src *image.RGBA, sr image.Rectangle, opts *Options) { |
| dw2 := uint64(dr.Dx()) * 2 |
| dh2 := uint64(dr.Dy()) * 2 |
| sw := uint64(sr.Dx()) |
| sh := uint64(sr.Dy()) |
| for dy := int32(adr.Min.Y); dy < int32(adr.Max.Y); dy++ { |
| sy := (2*uint64(dy) + 1) * sh / dh2 |
| d := (dr.Min.Y+int(dy)-dst.Rect.Min.Y)*dst.Stride + (dr.Min.X+adr.Min.X-dst.Rect.Min.X)*4 |
| for dx := int32(adr.Min.X); dx < int32(adr.Max.X); dx, d = dx+1, d+4 { |
| sx := (2*uint64(dx) + 1) * sw / dw2 |
| pi := (sr.Min.Y+int(sy)-src.Rect.Min.Y)*src.Stride + (sr.Min.X+int(sx)-src.Rect.Min.X)*4 |
| pr := uint32(src.Pix[pi+0]) * 0x101 |
| pg := uint32(src.Pix[pi+1]) * 0x101 |
| pb := uint32(src.Pix[pi+2]) * 0x101 |
| pa := uint32(src.Pix[pi+3]) * 0x101 |
| dst.Pix[d+0] = uint8(pr >> 8) |
| dst.Pix[d+1] = uint8(pg >> 8) |
| dst.Pix[d+2] = uint8(pb >> 8) |
| dst.Pix[d+3] = uint8(pa >> 8) |
| } |
| } |
| } |
| |
| func (nnInterpolator) scale_RGBA_YCbCr444_Src(dst *image.RGBA, dr, adr image.Rectangle, src *image.YCbCr, sr image.Rectangle, opts *Options) { |
| dw2 := uint64(dr.Dx()) * 2 |
| dh2 := uint64(dr.Dy()) * 2 |
| sw := uint64(sr.Dx()) |
| sh := uint64(sr.Dy()) |
| for dy := int32(adr.Min.Y); dy < int32(adr.Max.Y); dy++ { |
| sy := (2*uint64(dy) + 1) * sh / dh2 |
| d := (dr.Min.Y+int(dy)-dst.Rect.Min.Y)*dst.Stride + (dr.Min.X+adr.Min.X-dst.Rect.Min.X)*4 |
| for dx := int32(adr.Min.X); dx < int32(adr.Max.X); dx, d = dx+1, d+4 { |
| sx := (2*uint64(dx) + 1) * sw / dw2 |
| pi := (sr.Min.Y+int(sy)-src.Rect.Min.Y)*src.YStride + (sr.Min.X + int(sx) - src.Rect.Min.X) |
| pj := (sr.Min.Y+int(sy)-src.Rect.Min.Y)*src.CStride + (sr.Min.X + int(sx) - src.Rect.Min.X) |
| |
| // This is an inline version of image/color/ycbcr.go's YCbCr.RGBA method. |
| pyy1 := int(src.Y[pi]) * 0x10101 |
| pcb1 := int(src.Cb[pj]) - 128 |
| pcr1 := int(src.Cr[pj]) - 128 |
| pr := (pyy1 + 91881*pcr1) >> 8 |
| pg := (pyy1 - 22554*pcb1 - 46802*pcr1) >> 8 |
| pb := (pyy1 + 116130*pcb1) >> 8 |
| if pr < 0 { |
| pr = 0 |
| } else if pr > 0xffff { |
| pr = 0xffff |
| } |
| if pg < 0 { |
| pg = 0 |
| } else if pg > 0xffff { |
| pg = 0xffff |
| } |
| if pb < 0 { |
| pb = 0 |
| } else if pb > 0xffff { |
| pb = 0xffff |
| } |
| dst.Pix[d+0] = uint8(pr >> 8) |
| dst.Pix[d+1] = uint8(pg >> 8) |
| dst.Pix[d+2] = uint8(pb >> 8) |
| dst.Pix[d+3] = 0xff |
| } |
| } |
| } |
| |
| func (nnInterpolator) scale_RGBA_YCbCr422_Src(dst *image.RGBA, dr, adr image.Rectangle, src *image.YCbCr, sr image.Rectangle, opts *Options) { |
| dw2 := uint64(dr.Dx()) * 2 |
| dh2 := uint64(dr.Dy()) * 2 |
| sw := uint64(sr.Dx()) |
| sh := uint64(sr.Dy()) |
| for dy := int32(adr.Min.Y); dy < int32(adr.Max.Y); dy++ { |
| sy := (2*uint64(dy) + 1) * sh / dh2 |
| d := (dr.Min.Y+int(dy)-dst.Rect.Min.Y)*dst.Stride + (dr.Min.X+adr.Min.X-dst.Rect.Min.X)*4 |
| for dx := int32(adr.Min.X); dx < int32(adr.Max.X); dx, d = dx+1, d+4 { |
| sx := (2*uint64(dx) + 1) * sw / dw2 |
| pi := (sr.Min.Y+int(sy)-src.Rect.Min.Y)*src.YStride + (sr.Min.X + int(sx) - src.Rect.Min.X) |
| pj := (sr.Min.Y+int(sy)-src.Rect.Min.Y)*src.CStride + ((sr.Min.X+int(sx))/2 - src.Rect.Min.X/2) |
| |
| // This is an inline version of image/color/ycbcr.go's YCbCr.RGBA method. |
| pyy1 := int(src.Y[pi]) * 0x10101 |
| pcb1 := int(src.Cb[pj]) - 128 |
| pcr1 := int(src.Cr[pj]) - 128 |
| pr := (pyy1 + 91881*pcr1) >> 8 |
| pg := (pyy1 - 22554*pcb1 - 46802*pcr1) >> 8 |
| pb := (pyy1 + 116130*pcb1) >> 8 |
| if pr < 0 { |
| pr = 0 |
| } else if pr > 0xffff { |
| pr = 0xffff |
| } |
| if pg < 0 { |
| pg = 0 |
| } else if pg > 0xffff { |
| pg = 0xffff |
| } |
| if pb < 0 { |
| pb = 0 |
| } else if pb > 0xffff { |
| pb = 0xffff |
| } |
| dst.Pix[d+0] = uint8(pr >> 8) |
| dst.Pix[d+1] = uint8(pg >> 8) |
| dst.Pix[d+2] = uint8(pb >> 8) |
| dst.Pix[d+3] = 0xff |
| } |
| } |
| } |
| |
| func (nnInterpolator) scale_RGBA_YCbCr420_Src(dst *image.RGBA, dr, adr image.Rectangle, src *image.YCbCr, sr image.Rectangle, opts *Options) { |
| dw2 := uint64(dr.Dx()) * 2 |
| dh2 := uint64(dr.Dy()) * 2 |
| sw := uint64(sr.Dx()) |
| sh := uint64(sr.Dy()) |
| for dy := int32(adr.Min.Y); dy < int32(adr.Max.Y); dy++ { |
| sy := (2*uint64(dy) + 1) * sh / dh2 |
| d := (dr.Min.Y+int(dy)-dst.Rect.Min.Y)*dst.Stride + (dr.Min.X+adr.Min.X-dst.Rect.Min.X)*4 |
| for dx := int32(adr.Min.X); dx < int32(adr.Max.X); dx, d = dx+1, d+4 { |
| sx := (2*uint64(dx) + 1) * sw / dw2 |
| pi := (sr.Min.Y+int(sy)-src.Rect.Min.Y)*src.YStride + (sr.Min.X + int(sx) - src.Rect.Min.X) |
| pj := ((sr.Min.Y+int(sy))/2-src.Rect.Min.Y/2)*src.CStride + ((sr.Min.X+int(sx))/2 - src.Rect.Min.X/2) |
| |
| // This is an inline version of image/color/ycbcr.go's YCbCr.RGBA method. |
| pyy1 := int(src.Y[pi]) * 0x10101 |
| pcb1 := int(src.Cb[pj]) - 128 |
| pcr1 := int(src.Cr[pj]) - 128 |
| pr := (pyy1 + 91881*pcr1) >> 8 |
| pg := (pyy1 - 22554*pcb1 - 46802*pcr1) >> 8 |
| pb := (pyy1 + 116130*pcb1) >> 8 |
| if pr < 0 { |
| pr = 0 |
| } else if pr > 0xffff { |
| pr = 0xffff |
| } |
| if pg < 0 { |
| pg = 0 |
| } else if pg > 0xffff { |
| pg = 0xffff |
| } |
| if pb < 0 { |
| pb = 0 |
| } else if pb > 0xffff { |
| pb = 0xffff |
| } |
| dst.Pix[d+0] = uint8(pr >> 8) |
| dst.Pix[d+1] = uint8(pg >> 8) |
| dst.Pix[d+2] = uint8(pb >> 8) |
| dst.Pix[d+3] = 0xff |
| } |
| } |
| } |
| |
| func (nnInterpolator) scale_RGBA_YCbCr440_Src(dst *image.RGBA, dr, adr image.Rectangle, src *image.YCbCr, sr image.Rectangle, opts *Options) { |
| dw2 := uint64(dr.Dx()) * 2 |
| dh2 := uint64(dr.Dy()) * 2 |
| sw := uint64(sr.Dx()) |
| sh := uint64(sr.Dy()) |
| for dy := int32(adr.Min.Y); dy < int32(adr.Max.Y); dy++ { |
| sy := (2*uint64(dy) + 1) * sh / dh2 |
| d := (dr.Min.Y+int(dy)-dst.Rect.Min.Y)*dst.Stride + (dr.Min.X+adr.Min.X-dst.Rect.Min.X)*4 |
| for dx := int32(adr.Min.X); dx < int32(adr.Max.X); dx, d = dx+1, d+4 { |
| sx := (2*uint64(dx) + 1) * sw / dw2 |
| pi := (sr.Min.Y+int(sy)-src.Rect.Min.Y)*src.YStride + (sr.Min.X + int(sx) - src.Rect.Min.X) |
| pj := ((sr.Min.Y+int(sy))/2-src.Rect.Min.Y/2)*src.CStride + (sr.Min.X + int(sx) - src.Rect.Min.X) |
| |
| // This is an inline version of image/color/ycbcr.go's YCbCr.RGBA method. |
| pyy1 := int(src.Y[pi]) * 0x10101 |
| pcb1 := int(src.Cb[pj]) - 128 |
| pcr1 := int(src.Cr[pj]) - 128 |
| pr := (pyy1 + 91881*pcr1) >> 8 |
| pg := (pyy1 - 22554*pcb1 - 46802*pcr1) >> 8 |
| pb := (pyy1 + 116130*pcb1) >> 8 |
| if pr < 0 { |
| pr = 0 |
| } else if pr > 0xffff { |
| pr = 0xffff |
| } |
| if pg < 0 { |
| pg = 0 |
| } else if pg > 0xffff { |
| pg = 0xffff |
| } |
| if pb < 0 { |
| pb = 0 |
| } else if pb > 0xffff { |
| pb = 0xffff |
| } |
| dst.Pix[d+0] = uint8(pr >> 8) |
| dst.Pix[d+1] = uint8(pg >> 8) |
| dst.Pix[d+2] = uint8(pb >> 8) |
| dst.Pix[d+3] = 0xff |
| } |
| } |
| } |
| |
| func (nnInterpolator) scale_RGBA_Image_Over(dst *image.RGBA, dr, adr image.Rectangle, src image.Image, sr image.Rectangle, opts *Options) { |
| dw2 := uint64(dr.Dx()) * 2 |
| dh2 := uint64(dr.Dy()) * 2 |
| sw := uint64(sr.Dx()) |
| sh := uint64(sr.Dy()) |
| for dy := int32(adr.Min.Y); dy < int32(adr.Max.Y); dy++ { |
| sy := (2*uint64(dy) + 1) * sh / dh2 |
| d := (dr.Min.Y+int(dy)-dst.Rect.Min.Y)*dst.Stride + (dr.Min.X+adr.Min.X-dst.Rect.Min.X)*4 |
| for dx := int32(adr.Min.X); dx < int32(adr.Max.X); dx, d = dx+1, d+4 { |
| sx := (2*uint64(dx) + 1) * sw / dw2 |
| pr, pg, pb, pa := src.At(sr.Min.X+int(sx), sr.Min.Y+int(sy)).RGBA() |
| pa1 := (0xffff - pa) * 0x101 |
| dst.Pix[d+0] = uint8((uint32(dst.Pix[d+0])*pa1/0xffff + pr) >> 8) |
| dst.Pix[d+1] = uint8((uint32(dst.Pix[d+1])*pa1/0xffff + pg) >> 8) |
| dst.Pix[d+2] = uint8((uint32(dst.Pix[d+2])*pa1/0xffff + pb) >> 8) |
| dst.Pix[d+3] = uint8((uint32(dst.Pix[d+3])*pa1/0xffff + pa) >> 8) |
| } |
| } |
| } |
| |
| func (nnInterpolator) scale_RGBA_Image_Src(dst *image.RGBA, dr, adr image.Rectangle, src image.Image, sr image.Rectangle, opts *Options) { |
| dw2 := uint64(dr.Dx()) * 2 |
| dh2 := uint64(dr.Dy()) * 2 |
| sw := uint64(sr.Dx()) |
| sh := uint64(sr.Dy()) |
| for dy := int32(adr.Min.Y); dy < int32(adr.Max.Y); dy++ { |
| sy := (2*uint64(dy) + 1) * sh / dh2 |
| d := (dr.Min.Y+int(dy)-dst.Rect.Min.Y)*dst.Stride + (dr.Min.X+adr.Min.X-dst.Rect.Min.X)*4 |
| for dx := int32(adr.Min.X); dx < int32(adr.Max.X); dx, d = dx+1, d+4 { |
| sx := (2*uint64(dx) + 1) * sw / dw2 |
| pr, pg, pb, pa := src.At(sr.Min.X+int(sx), sr.Min.Y+int(sy)).RGBA() |
| dst.Pix[d+0] = uint8(pr >> 8) |
| dst.Pix[d+1] = uint8(pg >> 8) |
| dst.Pix[d+2] = uint8(pb >> 8) |
| dst.Pix[d+3] = uint8(pa >> 8) |
| } |
| } |
| } |
| |
| func (nnInterpolator) scale_Image_Image_Over(dst Image, dr, adr image.Rectangle, src image.Image, sr image.Rectangle, opts *Options) { |
| dw2 := uint64(dr.Dx()) * 2 |
| dh2 := uint64(dr.Dy()) * 2 |
| sw := uint64(sr.Dx()) |
| sh := uint64(sr.Dy()) |
| srcMask, smp := opts.SrcMask, opts.SrcMaskP |
| dstMask, dmp := opts.DstMask, opts.DstMaskP |
| dstColorRGBA64 := &color.RGBA64{} |
| dstColor := color.Color(dstColorRGBA64) |
| for dy := int32(adr.Min.Y); dy < int32(adr.Max.Y); dy++ { |
| sy := (2*uint64(dy) + 1) * sh / dh2 |
| for dx := int32(adr.Min.X); dx < int32(adr.Max.X); dx++ { |
| sx := (2*uint64(dx) + 1) * sw / dw2 |
| pr, pg, pb, pa := src.At(sr.Min.X+int(sx), sr.Min.Y+int(sy)).RGBA() |
| if srcMask != nil { |
| _, _, _, ma := srcMask.At(smp.X+sr.Min.X+int(sx), smp.Y+sr.Min.Y+int(sy)).RGBA() |
| pr = pr * ma / 0xffff |
| pg = pg * ma / 0xffff |
| pb = pb * ma / 0xffff |
| pa = pa * ma / 0xffff |
| } |
| qr, qg, qb, qa := dst.At(dr.Min.X+int(dx), dr.Min.Y+int(dy)).RGBA() |
| if dstMask != nil { |
| _, _, _, ma := dstMask.At(dmp.X+dr.Min.X+int(dx), dmp.Y+dr.Min.Y+int(dy)).RGBA() |
| pr = pr * ma / 0xffff |
| pg = pg * ma / 0xffff |
| pb = pb * ma / 0xffff |
| pa = pa * ma / 0xffff |
| } |
| pa1 := 0xffff - pa |
| dstColorRGBA64.R = uint16(qr*pa1/0xffff + pr) |
| dstColorRGBA64.G = uint16(qg*pa1/0xffff + pg) |
| dstColorRGBA64.B = uint16(qb*pa1/0xffff + pb) |
| dstColorRGBA64.A = uint16(qa*pa1/0xffff + pa) |
| dst.Set(dr.Min.X+int(dx), dr.Min.Y+int(dy), dstColor) |
| } |
| } |
| } |
| |
| func (nnInterpolator) scale_Image_Image_Src(dst Image, dr, adr image.Rectangle, src image.Image, sr image.Rectangle, opts *Options) { |
| dw2 := uint64(dr.Dx()) * 2 |
| dh2 := uint64(dr.Dy()) * 2 |
| sw := uint64(sr.Dx()) |
| sh := uint64(sr.Dy()) |
| srcMask, smp := opts.SrcMask, opts.SrcMaskP |
| dstMask, dmp := opts.DstMask, opts.DstMaskP |
| dstColorRGBA64 := &color.RGBA64{} |
| dstColor := color.Color(dstColorRGBA64) |
| for dy := int32(adr.Min.Y); dy < int32(adr.Max.Y); dy++ { |
| sy := (2*uint64(dy) + 1) * sh / dh2 |
| for dx := int32(adr.Min.X); dx < int32(adr.Max.X); dx++ { |
| sx := (2*uint64(dx) + 1) * sw / dw2 |
| pr, pg, pb, pa := src.At(sr.Min.X+int(sx), sr.Min.Y+int(sy)).RGBA() |
| if srcMask != nil { |
| _, _, _, ma := srcMask.At(smp.X+sr.Min.X+int(sx), smp.Y+sr.Min.Y+int(sy)).RGBA() |
| pr = pr * ma / 0xffff |
| pg = pg * ma / 0xffff |
| pb = pb * ma / 0xffff |
| pa = pa * ma / 0xffff |
| } |
| if dstMask != nil { |
| qr, qg, qb, qa := dst.At(dr.Min.X+int(dx), dr.Min.Y+int(dy)).RGBA() |
| _, _, _, ma := dstMask.At(dmp.X+dr.Min.X+int(dx), dmp.Y+dr.Min.Y+int(dy)).RGBA() |
| pr = pr * ma / 0xffff |
| pg = pg * ma / 0xffff |
| pb = pb * ma / 0xffff |
| pa = pa * ma / 0xffff |
| pa1 := 0xffff - ma |
| dstColorRGBA64.R = uint16(qr*pa1/0xffff + pr) |
| dstColorRGBA64.G = uint16(qg*pa1/0xffff + pg) |
| dstColorRGBA64.B = uint16(qb*pa1/0xffff + pb) |
| dstColorRGBA64.A = uint16(qa*pa1/0xffff + pa) |
| dst.Set(dr.Min.X+int(dx), dr.Min.Y+int(dy), dstColor) |
| } else { |
| dstColorRGBA64.R = uint16(pr) |
| dstColorRGBA64.G = uint16(pg) |
| dstColorRGBA64.B = uint16(pb) |
| dstColorRGBA64.A = uint16(pa) |
| dst.Set(dr.Min.X+int(dx), dr.Min.Y+int(dy), dstColor) |
| } |
| } |
| } |
| } |
| |
| func (nnInterpolator) transform_RGBA_Gray_Src(dst *image.RGBA, dr, adr image.Rectangle, d2s *f64.Aff3, src *image.Gray, sr image.Rectangle, bias image.Point, opts *Options) { |
| for dy := int32(adr.Min.Y); dy < int32(adr.Max.Y); dy++ { |
| dyf := float64(dr.Min.Y+int(dy)) + 0.5 |
| d := (dr.Min.Y+int(dy)-dst.Rect.Min.Y)*dst.Stride + (dr.Min.X+adr.Min.X-dst.Rect.Min.X)*4 |
| for dx := int32(adr.Min.X); dx < int32(adr.Max.X); dx, d = dx+1, d+4 { |
| dxf := float64(dr.Min.X+int(dx)) + 0.5 |
| sx0 := int(d2s[0]*dxf+d2s[1]*dyf+d2s[2]) + bias.X |
| sy0 := int(d2s[3]*dxf+d2s[4]*dyf+d2s[5]) + bias.Y |
| if !(image.Point{sx0, sy0}).In(sr) { |
| continue |
| } |
| pi := (sy0-src.Rect.Min.Y)*src.Stride + (sx0 - src.Rect.Min.X) |
| pr := uint32(src.Pix[pi]) * 0x101 |
| out := uint8(pr >> 8) |
| dst.Pix[d+0] = out |
| dst.Pix[d+1] = out |
| dst.Pix[d+2] = out |
| dst.Pix[d+3] = 0xff |
| } |
| } |
| } |
| |
| func (nnInterpolator) transform_RGBA_NRGBA_Over(dst *image.RGBA, dr, adr image.Rectangle, d2s *f64.Aff3, src *image.NRGBA, sr image.Rectangle, bias image.Point, opts *Options) { |
| for dy := int32(adr.Min.Y); dy < int32(adr.Max.Y); dy++ { |
| dyf := float64(dr.Min.Y+int(dy)) + 0.5 |
| d := (dr.Min.Y+int(dy)-dst.Rect.Min.Y)*dst.Stride + (dr.Min.X+adr.Min.X-dst.Rect.Min.X)*4 |
| for dx := int32(adr.Min.X); dx < int32(adr.Max.X); dx, d = dx+1, d+4 { |
| dxf := float64(dr.Min.X+int(dx)) + 0.5 |
| sx0 := int(d2s[0]*dxf+d2s[1]*dyf+d2s[2]) + bias.X |
| sy0 := int(d2s[3]*dxf+d2s[4]*dyf+d2s[5]) + bias.Y |
| if !(image.Point{sx0, sy0}).In(sr) { |
| continue |
| } |
| pi := (sy0-src.Rect.Min.Y)*src.Stride + (sx0-src.Rect.Min.X)*4 |
| pa := uint32(src.Pix[pi+3]) * 0x101 |
| pr := uint32(src.Pix[pi+0]) * pa / 0xff |
| pg := uint32(src.Pix[pi+1]) * pa / 0xff |
| pb := uint32(src.Pix[pi+2]) * pa / 0xff |
| pa1 := (0xffff - pa) * 0x101 |
| dst.Pix[d+0] = uint8((uint32(dst.Pix[d+0])*pa1/0xffff + pr) >> 8) |
| dst.Pix[d+1] = uint8((uint32(dst.Pix[d+1])*pa1/0xffff + pg) >> 8) |
| dst.Pix[d+2] = uint8((uint32(dst.Pix[d+2])*pa1/0xffff + pb) >> 8) |
| dst.Pix[d+3] = uint8((uint32(dst.Pix[d+3])*pa1/0xffff + pa) >> 8) |
| } |
| } |
| } |
| |
| func (nnInterpolator) transform_RGBA_NRGBA_Src(dst *image.RGBA, dr, adr image.Rectangle, d2s *f64.Aff3, src *image.NRGBA, sr image.Rectangle, bias image.Point, opts *Options) { |
| for dy := int32(adr.Min.Y); dy < int32(adr.Max.Y); dy++ { |
| dyf := float64(dr.Min.Y+int(dy)) + 0.5 |
| d := (dr.Min.Y+int(dy)-dst.Rect.Min.Y)*dst.Stride + (dr.Min.X+adr.Min.X-dst.Rect.Min.X)*4 |
| for dx := int32(adr.Min.X); dx < int32(adr.Max.X); dx, d = dx+1, d+4 { |
| dxf := float64(dr.Min.X+int(dx)) + 0.5 |
| sx0 := int(d2s[0]*dxf+d2s[1]*dyf+d2s[2]) + bias.X |
| sy0 := int(d2s[3]*dxf+d2s[4]*dyf+d2s[5]) + bias.Y |
| if !(image.Point{sx0, sy0}).In(sr) { |
| continue |
| } |
| pi := (sy0-src.Rect.Min.Y)*src.Stride + (sx0-src.Rect.Min.X)*4 |
| pa := uint32(src.Pix[pi+3]) * 0x101 |
| pr := uint32(src.Pix[pi+0]) * pa / 0xff |
| pg := uint32(src.Pix[pi+1]) * pa / 0xff |
| pb := uint32(src.Pix[pi+2]) * pa / 0xff |
| dst.Pix[d+0] = uint8(pr >> 8) |
| dst.Pix[d+1] = uint8(pg >> 8) |
| dst.Pix[d+2] = uint8(pb >> 8) |
| dst.Pix[d+3] = uint8(pa >> 8) |
| } |
| } |
| } |
| |
| func (nnInterpolator) transform_RGBA_RGBA_Over(dst *image.RGBA, dr, adr image.Rectangle, d2s *f64.Aff3, src *image.RGBA, sr image.Rectangle, bias image.Point, opts *Options) { |
| for dy := int32(adr.Min.Y); dy < int32(adr.Max.Y); dy++ { |
| dyf := float64(dr.Min.Y+int(dy)) + 0.5 |
| d := (dr.Min.Y+int(dy)-dst.Rect.Min.Y)*dst.Stride + (dr.Min.X+adr.Min.X-dst.Rect.Min.X)*4 |
| for dx := int32(adr.Min.X); dx < int32(adr.Max.X); dx, d = dx+1, d+4 { |
| dxf := float64(dr.Min.X+int(dx)) + 0.5 |
| sx0 := int(d2s[0]*dxf+d2s[1]*dyf+d2s[2]) + bias.X |
| sy0 := int(d2s[3]*dxf+d2s[4]*dyf+d2s[5]) + bias.Y |
| if !(image.Point{sx0, sy0}).In(sr) { |
| continue |
| } |
| pi := (sy0-src.Rect.Min.Y)*src.Stride + (sx0-src.Rect.Min.X)*4 |
| pr := uint32(src.Pix[pi+0]) * 0x101 |
| pg := uint32(src.Pix[pi+1]) * 0x101 |
| pb := uint32(src.Pix[pi+2]) * 0x101 |
| pa := uint32(src.Pix[pi+3]) * 0x101 |
| pa1 := (0xffff - pa) * 0x101 |
| dst.Pix[d+0] = uint8((uint32(dst.Pix[d+0])*pa1/0xffff + pr) >> 8) |
| dst.Pix[d+1] = uint8((uint32(dst.Pix[d+1])*pa1/0xffff + pg) >> 8) |
| dst.Pix[d+2] = uint8((uint32(dst.Pix[d+2])*pa1/0xffff + pb) >> 8) |
| dst.Pix[d+3] = uint8((uint32(dst.Pix[d+3])*pa1/0xffff + pa) >> 8) |
| } |
| } |
| } |
| |
| func (nnInterpolator) transform_RGBA_RGBA_Src(dst *image.RGBA, dr, adr image.Rectangle, d2s *f64.Aff3, src *image.RGBA, sr image.Rectangle, bias image.Point, opts *Options) { |
| for dy := int32(adr.Min.Y); dy < int32(adr.Max.Y); dy++ { |
| dyf := float64(dr.Min.Y+int(dy)) + 0.5 |
| d := (dr.Min.Y+int(dy)-dst.Rect.Min.Y)*dst.Stride + (dr.Min.X+adr.Min.X-dst.Rect.Min.X)*4 |
| for dx := int32(adr.Min.X); dx < int32(adr.Max.X); dx, d = dx+1, d+4 { |
| dxf := float64(dr.Min.X+int(dx)) + 0.5 |
| sx0 := int(d2s[0]*dxf+d2s[1]*dyf+d2s[2]) + bias.X |
| sy0 := int(d2s[3]*dxf+d2s[4]*dyf+d2s[5]) + bias.Y |
| if !(image.Point{sx0, sy0}).In(sr) { |
| continue |
| } |
| pi := (sy0-src.Rect.Min.Y)*src.Stride + (sx0-src.Rect.Min.X)*4 |
| pr := uint32(src.Pix[pi+0]) * 0x101 |
| pg := uint32(src.Pix[pi+1]) * 0x101 |
| pb := uint32(src.Pix[pi+2]) * 0x101 |
| pa := uint32(src.Pix[pi+3]) * 0x101 |
| dst.Pix[d+0] = uint8(pr >> 8) |
| dst.Pix[d+1] = uint8(pg >> 8) |
| dst.Pix[d+2] = uint8(pb >> 8) |
| dst.Pix[d+3] = uint8(pa >> 8) |
| } |
| } |
| } |
| |
| func (nnInterpolator) transform_RGBA_YCbCr444_Src(dst *image.RGBA, dr, adr image.Rectangle, d2s *f64.Aff3, src *image.YCbCr, sr image.Rectangle, bias image.Point, opts *Options) { |
| for dy := int32(adr.Min.Y); dy < int32(adr.Max.Y); dy++ { |
| dyf := float64(dr.Min.Y+int(dy)) + 0.5 |
| d := (dr.Min.Y+int(dy)-dst.Rect.Min.Y)*dst.Stride + (dr.Min.X+adr.Min.X-dst.Rect.Min.X)*4 |
| for dx := int32(adr.Min.X); dx < int32(adr.Max.X); dx, d = dx+1, d+4 { |
| dxf := float64(dr.Min.X+int(dx)) + 0.5 |
| sx0 := int(d2s[0]*dxf+d2s[1]*dyf+d2s[2]) + bias.X |
| sy0 := int(d2s[3]*dxf+d2s[4]*dyf+d2s[5]) + bias.Y |
| if !(image.Point{sx0, sy0}).In(sr) { |
| continue |
| } |
| pi := (sy0-src.Rect.Min.Y)*src.YStride + (sx0 - src.Rect.Min.X) |
| pj := (sy0-src.Rect.Min.Y)*src.CStride + (sx0 - src.Rect.Min.X) |
| |
| // This is an inline version of image/color/ycbcr.go's YCbCr.RGBA method. |
| pyy1 := int(src.Y[pi]) * 0x10101 |
| pcb1 := int(src.Cb[pj]) - 128 |
| pcr1 := int(src.Cr[pj]) - 128 |
| pr := (pyy1 + 91881*pcr1) >> 8 |
| pg := (pyy1 - 22554*pcb1 - 46802*pcr1) >> 8 |
| pb := (pyy1 + 116130*pcb1) >> 8 |
| if pr < 0 { |
| pr = 0 |
| } else if pr > 0xffff { |
| pr = 0xffff |
| } |
| if pg < 0 { |
| pg = 0 |
| } else if pg > 0xffff { |
| pg = 0xffff |
| } |
| if pb < 0 { |
| pb = 0 |
| } else if pb > 0xffff { |
| pb = 0xffff |
| } |
| dst.Pix[d+0] = uint8(pr >> 8) |
| dst.Pix[d+1] = uint8(pg >> 8) |
| dst.Pix[d+2] = uint8(pb >> 8) |
| dst.Pix[d+3] = 0xff |
| } |
| } |
| } |
| |
| func (nnInterpolator) transform_RGBA_YCbCr422_Src(dst *image.RGBA, dr, adr image.Rectangle, d2s *f64.Aff3, src *image.YCbCr, sr image.Rectangle, bias image.Point, opts *Options) { |
| for dy := int32(adr.Min.Y); dy < int32(adr.Max.Y); dy++ { |
| dyf := float64(dr.Min.Y+int(dy)) + 0.5 |
| d := (dr.Min.Y+int(dy)-dst.Rect.Min.Y)*dst.Stride + (dr.Min.X+adr.Min.X-dst.Rect.Min.X)*4 |
| for dx := int32(adr.Min.X); dx < int32(adr.Max.X); dx, d = dx+1, d+4 { |
| dxf := float64(dr.Min.X+int(dx)) + 0.5 |
| sx0 := int(d2s[0]*dxf+d2s[1]*dyf+d2s[2]) + bias.X |
| sy0 := int(d2s[3]*dxf+d2s[4]*dyf+d2s[5]) + bias.Y |
| if !(image.Point{sx0, sy0}).In(sr) { |
| continue |
| } |
| pi := (sy0-src.Rect.Min.Y)*src.YStride + (sx0 - src.Rect.Min.X) |
| pj := (sy0-src.Rect.Min.Y)*src.CStride + ((sx0)/2 - src.Rect.Min.X/2) |
| |
| // This is an inline version of image/color/ycbcr.go's YCbCr.RGBA method. |
| pyy1 := int(src.Y[pi]) * 0x10101 |
| pcb1 := int(src.Cb[pj]) - 128 |
| pcr1 := int(src.Cr[pj]) - 128 |
| pr := (pyy1 + 91881*pcr1) >> 8 |
| pg := (pyy1 - 22554*pcb1 - 46802*pcr1) >> 8 |
| pb := (pyy1 + 116130*pcb1) >> 8 |
| if pr < 0 { |
| pr = 0 |
| } else if pr > 0xffff { |
| pr = 0xffff |
| } |
| if pg < 0 { |
| pg = 0 |
| } else if pg > 0xffff { |
| pg = 0xffff |
| } |
| if pb < 0 { |
| pb = 0 |
| } else if pb > 0xffff { |
| pb = 0xffff |
| } |
| dst.Pix[d+0] = uint8(pr >> 8) |
| dst.Pix[d+1] = uint8(pg >> 8) |
| dst.Pix[d+2] = uint8(pb >> 8) |
| dst.Pix[d+3] = 0xff |
| } |
| } |
| } |
| |
| func (nnInterpolator) transform_RGBA_YCbCr420_Src(dst *image.RGBA, dr, adr image.Rectangle, d2s *f64.Aff3, src *image.YCbCr, sr image.Rectangle, bias image.Point, opts *Options) { |
| for dy := int32(adr.Min.Y); dy < int32(adr.Max.Y); dy++ { |
| dyf := float64(dr.Min.Y+int(dy)) + 0.5 |
| d := (dr.Min.Y+int(dy)-dst.Rect.Min.Y)*dst.Stride + (dr.Min.X+adr.Min.X-dst.Rect.Min.X)*4 |
| for dx := int32(adr.Min.X); dx < int32(adr.Max.X); dx, d = dx+1, d+4 { |
| dxf := float64(dr.Min.X+int(dx)) + 0.5 |
| sx0 := int(d2s[0]*dxf+d2s[1]*dyf+d2s[2]) + bias.X |
| sy0 := int(d2s[3]*dxf+d2s[4]*dyf+d2s[5]) + bias.Y |
| if !(image.Point{sx0, sy0}).In(sr) { |
| continue |
| } |
| pi := (sy0-src.Rect.Min.Y)*src.YStride + (sx0 - src.Rect.Min.X) |
| pj := ((sy0)/2-src.Rect.Min.Y/2)*src.CStride + ((sx0)/2 - src.Rect.Min.X/2) |
| |
| // This is an inline version of image/color/ycbcr.go's YCbCr.RGBA method. |
| pyy1 := int(src.Y[pi]) * 0x10101 |
| pcb1 := int(src.Cb[pj]) - 128 |
| pcr1 := int(src.Cr[pj]) - 128 |
| pr := (pyy1 + 91881*pcr1) >> 8 |
| pg := (pyy1 - 22554*pcb1 - 46802*pcr1) >> 8 |
| pb := (pyy1 + 116130*pcb1) >> 8 |
| if pr < 0 { |
| pr = 0 |
| } else if pr > 0xffff { |
| pr = 0xffff |
| } |
| if pg < 0 { |
| pg = 0 |
| } else if pg > 0xffff { |
| pg = 0xffff |
| } |
| if pb < 0 { |
| pb = 0 |
| } else if pb > 0xffff { |
| pb = 0xffff |
| } |
| dst.Pix[d+0] = uint8(pr >> 8) |
| dst.Pix[d+1] = uint8(pg >> 8) |
| dst.Pix[d+2] = uint8(pb >> 8) |
| dst.Pix[d+3] = 0xff |
| } |
| } |
| } |
| |
| func (nnInterpolator) transform_RGBA_YCbCr440_Src(dst *image.RGBA, dr, adr image.Rectangle, d2s *f64.Aff3, src *image.YCbCr, sr image.Rectangle, bias image.Point, opts *Options) { |
| for dy := int32(adr.Min.Y); dy < int32(adr.Max.Y); dy++ { |
| dyf := float64(dr.Min.Y+int(dy)) + 0.5 |
| d := (dr.Min.Y+int(dy)-dst.Rect.Min.Y)*dst.Stride + (dr.Min.X+adr.Min.X-dst.Rect.Min.X)*4 |
| for dx := int32(adr.Min.X); dx < int32(adr.Max.X); dx, d = dx+1, d+4 { |
| dxf := float64(dr.Min.X+int(dx)) + 0.5 |
| sx0 := int(d2s[0]*dxf+d2s[1]*dyf+d2s[2]) + bias.X |
| sy0 := int(d2s[3]*dxf+d2s[4]*dyf+d2s[5]) + bias.Y |
| if !(image.Point{sx0, sy0}).In(sr) { |
| continue |
| } |
| pi := (sy0-src.Rect.Min.Y)*src.YStride + (sx0 - src.Rect.Min.X) |
| pj := ((sy0)/2-src.Rect.Min.Y/2)*src.CStride + (sx0 - src.Rect.Min.X) |
| |
| // This is an inline version of image/color/ycbcr.go's YCbCr.RGBA method. |
| pyy1 := int(src.Y[pi]) * 0x10101 |
| pcb1 := int(src.Cb[pj]) - 128 |
| pcr1 := int(src.Cr[pj]) - 128 |
| pr := (pyy1 + 91881*pcr1) >> 8 |
| pg := (pyy1 - 22554*pcb1 - 46802*pcr1) >> 8 |
| pb := (pyy1 + 116130*pcb1) >> 8 |
| if pr < 0 { |
| pr = 0 |
| } else if pr > 0xffff { |
| pr = 0xffff |
| } |
| if pg < 0 { |
| pg = 0 |
| } else if pg > 0xffff { |
| pg = 0xffff |
| } |
| if pb < 0 { |
| pb = 0 |
| } else if pb > 0xffff { |
| pb = 0xffff |
| } |
| dst.Pix[d+0] = uint8(pr >> 8) |
| dst.Pix[d+1] = uint8(pg >> 8) |
| dst.Pix[d+2] = uint8(pb >> 8) |
| dst.Pix[d+3] = 0xff |
| } |
| } |
| } |
| |
| func (nnInterpolator) transform_RGBA_Image_Over(dst *image.RGBA, dr, adr image.Rectangle, d2s *f64.Aff3, src image.Image, sr image.Rectangle, bias image.Point, opts *Options) { |
| for dy := int32(adr.Min.Y); dy < int32(adr.Max.Y); dy++ { |
| dyf := float64(dr.Min.Y+int(dy)) + 0.5 |
| d := (dr.Min.Y+int(dy)-dst.Rect.Min.Y)*dst.Stride + (dr.Min.X+adr.Min.X-dst.Rect.Min.X)*4 |
| for dx := int32(adr.Min.X); dx < int32(adr.Max.X); dx, d = dx+1, d+4 { |
| dxf := float64(dr.Min.X+int(dx)) + 0.5 |
| sx0 := int(d2s[0]*dxf+d2s[1]*dyf+d2s[2]) + bias.X |
| sy0 := int(d2s[3]*dxf+d2s[4]*dyf+d2s[5]) + bias.Y |
| if !(image.Point{sx0, sy0}).In(sr) { |
| continue |
| } |
| pr, pg, pb, pa := src.At(sx0, sy0).RGBA() |
| pa1 := (0xffff - pa) * 0x101 |
| dst.Pix[d+0] = uint8((uint32(dst.Pix[d+0])*pa1/0xffff + pr) >> 8) |
| dst.Pix[d+1] = uint8((uint32(dst.Pix[d+1])*pa1/0xffff + pg) >> 8) |
| dst.Pix[d+2] = uint8((uint32(dst.Pix[d+2])*pa1/0xffff + pb) >> 8) |
| dst.Pix[d+3] = uint8((uint32(dst.Pix[d+3])*pa1/0xffff + pa) >> 8) |
| } |
| } |
| } |
| |
| func (nnInterpolator) transform_RGBA_Image_Src(dst *image.RGBA, dr, adr image.Rectangle, d2s *f64.Aff3, src image.Image, sr image.Rectangle, bias image.Point, opts *Options) { |
| for dy := int32(adr.Min.Y); dy < int32(adr.Max.Y); dy++ { |
| dyf := float64(dr.Min.Y+int(dy)) + 0.5 |
| d := (dr.Min.Y+int(dy)-dst.Rect.Min.Y)*dst.Stride + (dr.Min.X+adr.Min.X-dst.Rect.Min.X)*4 |
| for dx := int32(adr.Min.X); dx < int32(adr.Max.X); dx, d = dx+1, d+4 { |
| dxf := float64(dr.Min.X+int(dx)) + 0.5 |
| sx0 := int(d2s[0]*dxf+d2s[1]*dyf+d2s[2]) + bias.X |
| sy0 := int(d2s[3]*dxf+d2s[4]*dyf+d2s[5]) + bias.Y |
| if !(image.Point{sx0, sy0}).In(sr) { |
| continue |
| } |
| pr, pg, pb, pa := src.At(sx0, sy0).RGBA() |
| dst.Pix[d+0] = uint8(pr >> 8) |
| dst.Pix[d+1] = uint8(pg >> 8) |
| dst.Pix[d+2] = uint8(pb >> 8) |
| dst.Pix[d+3] = uint8(pa >> 8) |
| } |
| } |
| } |
| |
| func (nnInterpolator) transform_Image_Image_Over(dst Image, dr, adr image.Rectangle, d2s *f64.Aff3, src image.Image, sr image.Rectangle, bias image.Point, opts *Options) { |
| srcMask, smp := opts.SrcMask, opts.SrcMaskP |
| dstMask, dmp := opts.DstMask, opts.DstMaskP |
| dstColorRGBA64 := &color.RGBA64{} |
| dstColor := color.Color(dstColorRGBA64) |
| for dy := int32(adr.Min.Y); dy < int32(adr.Max.Y); dy++ { |
| dyf := float64(dr.Min.Y+int(dy)) + 0.5 |
| for dx := int32(adr.Min.X); dx < int32(adr.Max.X); dx++ { |
| dxf := float64(dr.Min.X+int(dx)) + 0.5 |
| sx0 := int(d2s[0]*dxf+d2s[1]*dyf+d2s[2]) + bias.X |
| sy0 := int(d2s[3]*dxf+d2s[4]*dyf+d2s[5]) + bias.Y |
| if !(image.Point{sx0, sy0}).In(sr) { |
| continue |
| } |
| pr, pg, pb, pa := src.At(sx0, sy0).RGBA() |
| if srcMask != nil { |
| _, _, _, ma := srcMask.At(smp.X+sx0, smp.Y+sy0).RGBA() |
| pr = pr * ma / 0xffff |
| pg = pg * ma / 0xffff |
| pb = pb * ma / 0xffff |
| pa = pa * ma / 0xffff |
| } |
| qr, qg, qb, qa := dst.At(dr.Min.X+int(dx), dr.Min.Y+int(dy)).RGBA() |
| if dstMask != nil { |
| _, _, _, ma := dstMask.At(dmp.X+dr.Min.X+int(dx), dmp.Y+dr.Min.Y+int(dy)).RGBA() |
| pr = pr * ma / 0xffff |
| pg = pg * ma / 0xffff |
| pb = pb * ma / 0xffff |
| pa = pa * ma / 0xffff |
| } |
| pa1 := 0xffff - pa |
| dstColorRGBA64.R = uint16(qr*pa1/0xffff + pr) |
| dstColorRGBA64.G = uint16(qg*pa1/0xffff + pg) |
| dstColorRGBA64.B = uint16(qb*pa1/0xffff + pb) |
| dstColorRGBA64.A = uint16(qa*pa1/0xffff + pa) |
| dst.Set(dr.Min.X+int(dx), dr.Min.Y+int(dy), dstColor) |
| } |
| } |
| } |
| |
| func (nnInterpolator) transform_Image_Image_Src(dst Image, dr, adr image.Rectangle, d2s *f64.Aff3, src image.Image, sr image.Rectangle, bias image.Point, opts *Options) { |
| srcMask, smp := opts.SrcMask, opts.SrcMaskP |
| dstMask, dmp := opts.DstMask, opts.DstMaskP |
| dstColorRGBA64 := &color.RGBA64{} |
| dstColor := color.Color(dstColorRGBA64) |
| for dy := int32(adr.Min.Y); dy < int32(adr.Max.Y); dy++ { |
| dyf := float64(dr.Min.Y+int(dy)) + 0.5 |
| for dx := int32(adr.Min.X); dx < int32(adr.Max.X); dx++ { |
| dxf := float64(dr.Min.X+int(dx)) + 0.5 |
| sx0 := int(d2s[0]*dxf+d2s[1]*dyf+d2s[2]) + bias.X |
| sy0 := int(d2s[3]*dxf+d2s[4]*dyf+d2s[5]) + bias.Y |
| if !(image.Point{sx0, sy0}).In(sr) { |
| continue |
| } |
| pr, pg, pb, pa := src.At(sx0, sy0).RGBA() |
| if srcMask != nil { |
| _, _, _, ma := srcMask.At(smp.X+sx0, smp.Y+sy0).RGBA() |
| pr = pr * ma / 0xffff |
| pg = pg * ma / 0xffff |
| pb = pb * ma / 0xffff |
| pa = pa * ma / 0xffff |
| } |
| if dstMask != nil { |
| qr, qg, qb, qa := dst.At(dr.Min.X+int(dx), dr.Min.Y+int(dy)).RGBA() |
| _, _, _, ma := dstMask.At(dmp.X+dr.Min.X+int(dx), dmp.Y+dr.Min.Y+int(dy)).RGBA() |
| pr = pr * ma / 0xffff |
| pg = pg * ma / 0xffff |
| pb = pb * ma / 0xffff |
| pa = pa * ma / 0xffff |
| pa1 := 0xffff - ma |
| dstColorRGBA64.R = uint16(qr*pa1/0xffff + pr) |
| dstColorRGBA64.G = uint16(qg*pa1/0xffff + pg) |
| dstColorRGBA64.B = uint16(qb*pa1/0xffff + pb) |
| dstColorRGBA64.A = uint16(qa*pa1/0xffff + pa) |
| dst.Set(dr.Min.X+int(dx), dr.Min.Y+int(dy), dstColor) |
| } else { |
| dstColorRGBA64.R = uint16(pr) |
| dstColorRGBA64.G = uint16(pg) |
| dstColorRGBA64.B = uint16(pb) |
| dstColorRGBA64.A = uint16(pa) |
| dst.Set(dr.Min.X+int(dx), dr.Min.Y+int(dy), dstColor) |
| } |
| } |
| } |
| } |
| |
| func (z ablInterpolator) Scale(dst Image, dr image.Rectangle, src image.Image, sr image.Rectangle, op Op, opts *Options) { |
| // Try to simplify a Scale to a Copy when DstMask is not specified. |
| // If DstMask is not nil, Copy will call Scale back with same dr and sr, and cause stack overflow. |
| if dr.Size() == sr.Size() && (opts == nil || opts.DstMask == nil) { |
| Copy(dst, dr.Min, src, sr, op, opts) |
| return |
| } |
| |
| var o Options |
| if opts != nil { |
| o = *opts |
| } |
| |
| // adr is the affected destination pixels. |
| adr := dst.Bounds().Intersect(dr) |
| adr, o.DstMask = clipAffectedDestRect(adr, o.DstMask, o.DstMaskP) |
| if adr.Empty() || sr.Empty() { |
| return |
| } |
| // Make adr relative to dr.Min. |
| adr = adr.Sub(dr.Min) |
| if op == Over && o.SrcMask == nil && opaque(src) { |
| op = Src |
| } |
| |
| // sr is the source pixels. If it extends beyond the src bounds, |
| // we cannot use the type-specific fast paths, as they access |
| // the Pix fields directly without bounds checking. |
| // |
| // Similarly, the fast paths assume that the masks are nil. |
| if o.DstMask != nil || o.SrcMask != nil || !sr.In(src.Bounds()) { |
| switch op { |
| case Over: |
| z.scale_Image_Image_Over(dst, dr, adr, src, sr, &o) |
| case Src: |
| z.scale_Image_Image_Src(dst, dr, adr, src, sr, &o) |
| } |
| } else if _, ok := src.(*image.Uniform); ok { |
| Draw(dst, dr, src, src.Bounds().Min, op) |
| } else { |
| switch op { |
| case Over: |
| switch dst := dst.(type) { |
| case *image.RGBA: |
| switch src := src.(type) { |
| case *image.NRGBA: |
| z.scale_RGBA_NRGBA_Over(dst, dr, adr, src, sr, &o) |
| case *image.RGBA: |
| z.scale_RGBA_RGBA_Over(dst, dr, adr, src, sr, &o) |
| default: |
| z.scale_RGBA_Image_Over(dst, dr, adr, src, sr, &o) |
| } |
| default: |
| switch src := src.(type) { |
| default: |
| z.scale_Image_Image_Over(dst, dr, adr, src, sr, &o) |
| } |
| } |
| case Src: |
| switch dst := dst.(type) { |
| case *image.RGBA: |
| switch src := src.(type) { |
| case *image.Gray: |
| z.scale_RGBA_Gray_Src(dst, dr, adr, src, sr, &o) |
| case *image.NRGBA: |
| z.scale_RGBA_NRGBA_Src(dst, dr, adr, src, sr, &o) |
| case *image.RGBA: |
| z.scale_RGBA_RGBA_Src(dst, dr, adr, src, sr, &o) |
| case *image.YCbCr: |
| switch src.SubsampleRatio { |
| default: |
| z.scale_RGBA_Image_Src(dst, dr, adr, src, sr, &o) |
| case image.YCbCrSubsampleRatio444: |
| z.scale_RGBA_YCbCr444_Src(dst, dr, adr, src, sr, &o) |
| case image.YCbCrSubsampleRatio422: |
| z.scale_RGBA_YCbCr422_Src(dst, dr, adr, src, sr, &o) |
| case image.YCbCrSubsampleRatio420: |
| z.scale_RGBA_YCbCr420_Src(dst, dr, adr, src, sr, &o) |
| case image.YCbCrSubsampleRatio440: |
| z.scale_RGBA_YCbCr440_Src(dst, dr, adr, src, sr, &o) |
| } |
| default: |
| z.scale_RGBA_Image_Src(dst, dr, adr, src, sr, &o) |
| } |
| default: |
| switch src := src.(type) { |
| default: |
| z.scale_Image_Image_Src(dst, dr, adr, src, sr, &o) |
| } |
| } |
| } |
| } |
| } |
| |
| func (z ablInterpolator) Transform(dst Image, s2d f64.Aff3, src image.Image, sr image.Rectangle, op Op, opts *Options) { |
| // Try to simplify a Transform to a Copy. |
| if s2d[0] == 1 && s2d[1] == 0 && s2d[3] == 0 && s2d[4] == 1 { |
| dx := int(s2d[2]) |
| dy := int(s2d[5]) |
| if float64(dx) == s2d[2] && float64(dy) == s2d[5] { |
| Copy(dst, image.Point{X: sr.Min.X + dx, Y: sr.Min.X + dy}, src, sr, op, opts) |
| return |
| } |
| } |
| |
| var o Options |
| if opts != nil { |
| o = *opts |
| } |
| |
| dr := transformRect(&s2d, &sr) |
| // adr is the affected destination pixels. |
| adr := dst.Bounds().Intersect(dr) |
| adr, o.DstMask = clipAffectedDestRect(adr, o.DstMask, o.DstMaskP) |
| if adr.Empty() || sr.Empty() { |
| return |
| } |
| if op == Over && o.SrcMask == nil && opaque(src) { |
| op = Src |
| } |
| |
| d2s := invert(&s2d) |
| // bias is a translation of the mapping from dst coordinates to src |
| // coordinates such that the latter temporarily have non-negative X |
| // and Y coordinates. This allows us to write int(f) instead of |
| // int(math.Floor(f)), since "round to zero" and "round down" are |
| // equivalent when f >= 0, but the former is much cheaper. The X-- |
| // and Y-- are because the TransformLeaf methods have a "sx -= 0.5" |
| // adjustment. |
| bias := transformRect(&d2s, &adr).Min |
| bias.X-- |
| bias.Y-- |
| d2s[2] -= float64(bias.X) |
| d2s[5] -= float64(bias.Y) |
| // Make adr relative to dr.Min. |
| adr = adr.Sub(dr.Min) |
| // sr is the source pixels. If it extends beyond the src bounds, |
| // we cannot use the type-specific fast paths, as they access |
| // the Pix fields directly without bounds checking. |
| // |
| // Similarly, the fast paths assume that the masks are nil. |
| if o.DstMask != nil || o.SrcMask != nil || !sr.In(src.Bounds()) { |
| switch op { |
| case Over: |
| z.transform_Image_Image_Over(dst, dr, adr, &d2s, src, sr, bias, &o) |
| case Src: |
| z.transform_Image_Image_Src(dst, dr, adr, &d2s, src, sr, bias, &o) |
| } |
| } else if u, ok := src.(*image.Uniform); ok { |
| transform_Uniform(dst, dr, adr, &d2s, u, sr, bias, op) |
| } else { |
| switch op { |
| case Over: |
| switch dst := dst.(type) { |
| case *image.RGBA: |
| switch src := src.(type) { |
| case *image.NRGBA: |
| z.transform_RGBA_NRGBA_Over(dst, dr, adr, &d2s, src, sr, bias, &o) |
| case *image.RGBA: |
| z.transform_RGBA_RGBA_Over(dst, dr, adr, &d2s, src, sr, bias, &o) |
| default: |
| z.transform_RGBA_Image_Over(dst, dr, adr, &d2s, src, sr, bias, &o) |
| } |
| default: |
| switch src := src.(type) { |
| default: |
| z.transform_Image_Image_Over(dst, dr, adr, &d2s, src, sr, bias, &o) |
| } |
| } |
| case Src: |
| switch dst := dst.(type) { |
| case *image.RGBA: |
| switch src := src.(type) { |
| case *image.Gray: |
| z.transform_RGBA_Gray_Src(dst, dr, adr, &d2s, src, sr, bias, &o) |
| case *image.NRGBA: |
| z.transform_RGBA_NRGBA_Src(dst, dr, adr, &d2s, src, sr, bias, &o) |
| case *image.RGBA: |
| z.transform_RGBA_RGBA_Src(dst, dr, adr, &d2s, src, sr, bias, &o) |
| case *image.YCbCr: |
| switch src.SubsampleRatio { |
| default: |
| z.transform_RGBA_Image_Src(dst, dr, adr, &d2s, src, sr, bias, &o) |
| case image.YCbCrSubsampleRatio444: |
| z.transform_RGBA_YCbCr444_Src(dst, dr, adr, &d2s, src, sr, bias, &o) |
| case image.YCbCrSubsampleRatio422: |
| z.transform_RGBA_YCbCr422_Src(dst, dr, adr, &d2s, src, sr, bias, &o) |
| case image.YCbCrSubsampleRatio420: |
| z.transform_RGBA_YCbCr420_Src(dst, dr, adr, &d2s, src, sr, bias, &o) |
| case image.YCbCrSubsampleRatio440: |
| z.transform_RGBA_YCbCr440_Src(dst, dr, adr, &d2s, src, sr, bias, &o) |
| } |
| default: |
| z.transform_RGBA_Image_Src(dst, dr, adr, &d2s, src, sr, bias, &o) |
| } |
| default: |
| switch src := src.(type) { |
| default: |
| z.transform_Image_Image_Src(dst, dr, adr, &d2s, src, sr, bias, &o) |
| } |
| } |
| } |
| } |
| } |
| |
| func (ablInterpolator) scale_RGBA_Gray_Src(dst *image.RGBA, dr, adr image.Rectangle, src *image.Gray, sr image.Rectangle, opts *Options) { |
| sw := int32(sr.Dx()) |
| sh := int32(sr.Dy()) |
| yscale := float64(sh) / float64(dr.Dy()) |
| xscale := float64(sw) / float64(dr.Dx()) |
| swMinus1, shMinus1 := sw-1, sh-1 |
| |
| for dy := int32(adr.Min.Y); dy < int32(adr.Max.Y); dy++ { |
| sy := (float64(dy)+0.5)*yscale - 0.5 |
| // If sy < 0, we will clamp sy0 to 0 anyway, so it doesn't matter if |
| // we say int32(sy) instead of int32(math.Floor(sy)). Similarly for |
| // sx, below. |
| sy0 := int32(sy) |
| yFrac0 := sy - float64(sy0) |
| yFrac1 := 1 - yFrac0 |
| sy1 := sy0 + 1 |
| if sy < 0 { |
| sy0, sy1 = 0, 0 |
| yFrac0, yFrac1 = 0, 1 |
| } else if sy1 > shMinus1 { |
| sy0, sy1 = shMinus1, shMinus1 |
| yFrac0, yFrac1 = 1, 0 |
| } |
| d := (dr.Min.Y+int(dy)-dst.Rect.Min.Y)*dst.Stride + (dr.Min.X+adr.Min.X-dst.Rect.Min.X)*4 |
| |
| for dx := int32(adr.Min.X); dx < int32(adr.Max.X); dx, d = dx+1, d+4 { |
| sx := (float64(dx)+0.5)*xscale - 0.5 |
| sx0 := int32(sx) |
| xFrac0 := sx - float64(sx0) |
| xFrac1 := 1 - xFrac0 |
| sx1 := sx0 + 1 |
| if sx < 0 { |
| sx0, sx1 = 0, 0 |
| xFrac0, xFrac1 = 0, 1 |
| } else if sx1 > swMinus1 { |
| sx0, sx1 = swMinus1, swMinus1 |
| xFrac0, xFrac1 = 1, 0 |
| } |
| |
| s00i := (sr.Min.Y+int(sy0)-src.Rect.Min.Y)*src.Stride + (sr.Min.X + int(sx0) - src.Rect.Min.X) |
| s00ru := uint32(src.Pix[s00i]) * 0x101 |
| s00r := float64(s00ru) |
| s10i := (sr.Min.Y+int(sy0)-src.Rect.Min.Y)*src.Stride + (sr.Min.X + int(sx1) - src.Rect.Min.X) |
| s10ru := uint32(src.Pix[s10i]) * 0x101 |
| s10r := float64(s10ru) |
| s10r = xFrac1*s00r + xFrac0*s10r |
| s01i := (sr.Min.Y+int(sy1)-src.Rect.Min.Y)*src.Stride + (sr.Min.X + int(sx0) - src.Rect.Min.X) |
| s01ru := uint32(src.Pix[s01i]) * 0x101 |
| s01r := float64(s01ru) |
| s11i := (sr.Min.Y+int(sy1)-src.Rect.Min.Y)*src.Stride + (sr.Min.X + int(sx1) - src.Rect.Min.X) |
| s11ru := uint32(src.Pix[s11i]) * 0x101 |
| s11r := float64(s11ru) |
| s11r = xFrac1*s01r + xFrac0*s11r |
| s11r = yFrac1*s10r + yFrac0*s11r |
| pr := uint32(s11r) |
| out := uint8(pr >> 8) |
| dst.Pix[d+0] = out |
| dst.Pix[d+1] = out |
| dst.Pix[d+2] = out |
| dst.Pix[d+3] = 0xff |
| } |
| } |
| } |
| |
| func (ablInterpolator) scale_RGBA_NRGBA_Over(dst *image.RGBA, dr, adr image.Rectangle, src *image.NRGBA, sr image.Rectangle, opts *Options) { |
| sw := int32(sr.Dx()) |
| sh := int32(sr.Dy()) |
| yscale := float64(sh) / float64(dr.Dy()) |
| xscale := float64(sw) / float64(dr.Dx()) |
| swMinus1, shMinus1 := sw-1, sh-1 |
| |
| for dy := int32(adr.Min.Y); dy < int32(adr.Max.Y); dy++ { |
| sy := (float64(dy)+0.5)*yscale - 0.5 |
| // If sy < 0, we will clamp sy0 to 0 anyway, so it doesn't matter if |
| // we say int32(sy) instead of int32(math.Floor(sy)). Similarly for |
| // sx, below. |
| sy0 := int32(sy) |
| yFrac0 := sy - float64(sy0) |
| yFrac1 := 1 - yFrac0 |
| sy1 := sy0 + 1 |
| if sy < 0 { |
| sy0, sy1 = 0, 0 |
| yFrac0, yFrac1 = 0, 1 |
| } else if sy1 > shMinus1 { |
| sy0, sy1 = shMinus1, shMinus1 |
| yFrac0, yFrac1 = 1, 0 |
| } |
| d := (dr.Min.Y+int(dy)-dst.Rect.Min.Y)*dst.Stride + (dr.Min.X+adr.Min.X-dst.Rect.Min.X)*4 |
| |
| for dx := int32(adr.Min.X); dx < int32(adr.Max.X); dx, d = dx+1, d+4 { |
| sx := (float64(dx)+0.5)*xscale - 0.5 |
| sx0 := int32(sx) |
| xFrac0 := sx - float64(sx0) |
| xFrac1 := 1 - xFrac0 |
| sx1 := sx0 + 1 |
| if sx < 0 { |
| sx0, sx1 = 0, 0 |
| xFrac0, xFrac1 = 0, 1 |
| } else if sx1 > swMinus1 { |
| sx0, sx1 = swMinus1, swMinus1 |
| xFrac0, xFrac1 = 1, 0 |
| } |
| |
| s00i := (sr.Min.Y+int(sy0)-src.Rect.Min.Y)*src.Stride + (sr.Min.X+int(sx0)-src.Rect.Min.X)*4 |
| s00au := uint32(src.Pix[s00i+3]) * 0x101 |
| s00ru := uint32(src.Pix[s00i+0]) * s00au / 0xff |
| s00gu := uint32(src.Pix[s00i+1]) * s00au / 0xff |
| s00bu := uint32(src.Pix[s00i+2]) * s00au / 0xff |
| s00r := float64(s00ru) |
| s00g := float64(s00gu) |
| s00b := float64(s00bu) |
| s00a := float64(s00au) |
| s10i := (sr.Min.Y+int(sy0)-src.Rect.Min.Y)*src.Stride + (sr.Min.X+int(sx1)-src.Rect.Min.X)*4 |
| s10au := uint32(src.Pix[s10i+3]) * 0x101 |
| s10ru := uint32(src.Pix[s10i+0]) * s10au / 0xff |
| s10gu := uint32(src.Pix[s10i+1]) * s10au / 0xff |
| s10bu := uint32(src.Pix[s10i+2]) * s10au / 0xff |
| s10r := float64(s10ru) |
| s10g := float64(s10gu) |
| s10b := float64(s10bu) |
| s10a := float64(s10au) |
| s10r = xFrac1*s00r + xFrac0*s10r |
| s10g = xFrac1*s00g + xFrac0*s10g |
| s10b = xFrac1*s00b + xFrac0*s10b |
| s10a = xFrac1*s00a + xFrac0*s10a |
| s01i := (sr.Min.Y+int(sy1)-src.Rect.Min.Y)*src.Stride + (sr.Min.X+int(sx0)-src.Rect.Min.X)*4 |
| s01au := uint32(src.Pix[s01i+3]) * 0x101 |
| s01ru := uint32(src.Pix[s01i+0]) * s01au / 0xff |
| s01gu := uint32(src.Pix[s01i+1]) * s01au / 0xff |
| s01bu := uint32(src.Pix[s01i+2]) * s01au / 0xff |
| s01r := float64(s01ru) |
| s01g := float64(s01gu) |
| s01b := float64(s01bu) |
| s01a := float64(s01au) |
| s11i := (sr.Min.Y+int(sy1)-src.Rect.Min.Y)*src.Stride + (sr.Min.X+int(sx1)-src.Rect.Min.X)*4 |
| s11au := uint32(src.Pix[s11i+3]) * 0x101 |
| s11ru := uint32(src.Pix[s11i+0]) * s11au / 0xff |
| s11gu := uint32(src.Pix[s11i+1]) * s11au / 0xff |
| s11bu := uint32(src.Pix[s11i+2]) * s11au / 0xff |
| s11r := float64(s11ru) |
| s11g := float64(s11gu) |
| s11b := float64(s11bu) |
| s11a := float64(s11au) |
| s11r = xFrac1*s01r + xFrac0*s11r |
| s11g = xFrac1*s01g + xFrac0*s11g |
| s11b = xFrac1*s01b + xFrac0*s11b |
| s11a = xFrac1*s01a + xFrac0*s11a |
| s11r = yFrac1*s10r + yFrac0*s11r |
| s11g = yFrac1*s10g + yFrac0*s11g |
| s11b = yFrac1*s10b + yFrac0*s11b |
| s11a = yFrac1*s10a + yFrac0*s11a |
| pr := uint32(s11r) |
| pg := uint32(s11g) |
| pb := uint32(s11b) |
| pa := uint32(s11a) |
| pa1 := (0xffff - pa) * 0x101 |
| dst.Pix[d+0] = uint8((uint32(dst.Pix[d+0])*pa1/0xffff + pr) >> 8) |
| dst.Pix[d+1] = uint8((uint32(dst.Pix[d+1])*pa1/0xffff + pg) >> 8) |
| dst.Pix[d+2] = uint8((uint32(dst.Pix[d+2])*pa1/0xffff + pb) >> 8) |
| dst.Pix[d+3] = uint8((uint32(dst.Pix[d+3])*pa1/0xffff + pa) >> 8) |
| } |
| } |
| } |
| |
| func (ablInterpolator) scale_RGBA_NRGBA_Src(dst *image.RGBA, dr, adr image.Rectangle, src *image.NRGBA, sr image.Rectangle, opts *Options) { |
| sw := int32(sr.Dx()) |
| sh := int32(sr.Dy()) |
| yscale := float64(sh) / float64(dr.Dy()) |
| xscale := float64(sw) / float64(dr.Dx()) |
| swMinus1, shMinus1 := sw-1, sh-1 |
| |
| for dy := int32(adr.Min.Y); dy < int32(adr.Max.Y); dy++ { |
| sy := (float64(dy)+0.5)*yscale - 0.5 |
| // If sy < 0, we will clamp sy0 to 0 anyway, so it doesn't matter if |
| // we say int32(sy) instead of int32(math.Floor(sy)). Similarly for |
| // sx, below. |
| sy0 := int32(sy) |
| yFrac0 := sy - float64(sy0) |
| yFrac1 := 1 - yFrac0 |
| sy1 := sy0 + 1 |
| if sy < 0 { |
| sy0, sy1 = 0, 0 |
| yFrac0, yFrac1 = 0, 1 |
| } else if sy1 > shMinus1 { |
| sy0, sy1 = shMinus1, shMinus1 |
| yFrac0, yFrac1 = 1, 0 |
| } |
| d := (dr.Min.Y+int(dy)-dst.Rect.Min.Y)*dst.Stride + (dr.Min.X+adr.Min.X-dst.Rect.Min.X)*4 |
| |
| for dx := int32(adr.Min.X); dx < int32(adr.Max.X); dx, d = dx+1, d+4 { |
| sx := (float64(dx)+0.5)*xscale - 0.5 |
| sx0 := int32(sx) |
| xFrac0 := sx - float64(sx0) |
| xFrac1 := 1 - xFrac0 |
| sx1 := sx0 + 1 |
| if sx < 0 { |
| sx0, sx1 = 0, 0 |
| xFrac0, xFrac1 = 0, 1 |
| } else if sx1 > swMinus1 { |
| sx0, sx1 = swMinus1, swMinus1 |
| xFrac0, xFrac1 = 1, 0 |
| } |
| |
| s00i := (sr.Min.Y+int(sy0)-src.Rect.Min.Y)*src.Stride + (sr.Min.X+int(sx0)-src.Rect.Min.X)*4 |
| s00au := uint32(src.Pix[s00i+3]) * 0x101 |
| s00ru := uint32(src.Pix[s00i+0]) * s00au / 0xff |
| s00gu := uint32(src.Pix[s00i+1]) * s00au / 0xff |
| s00bu := uint32(src.Pix[s00i+2]) * s00au / 0xff |
| s00r := float64(s00ru) |
| s00g := float64(s00gu) |
| s00b := float64(s00bu) |
| s00a := float64(s00au) |
| s10i := (sr.Min.Y+int(sy0)-src.Rect.Min.Y)*src.Stride + (sr.Min.X+int(sx1)-src.Rect.Min.X)*4 |
| s10au := uint32(src.Pix[s10i+3]) * 0x101 |
| s10ru := uint32(src.Pix[s10i+0]) * s10au / 0xff |
| s10gu := uint32(src.Pix[s10i+1]) * s10au / 0xff |
| s10bu := uint32(src.Pix[s10i+2]) * s10au / 0xff |
| s10r := float64(s10ru) |
| s10g := float64(s10gu) |
| s10b := float64(s10bu) |
| s10a := float64(s10au) |
| s10r = xFrac1*s00r + xFrac0*s10r |
| s10g = xFrac1*s00g + xFrac0*s10g |
| s10b = xFrac1*s00b + xFrac0*s10b |
| s10a = xFrac1*s00a + xFrac0*s10a |
| s01i := (sr.Min.Y+int(sy1)-src.Rect.Min.Y)*src.Stride + (sr.Min.X+int(sx0)-src.Rect.Min.X)*4 |
| s01au := uint32(src.Pix[s01i+3]) * 0x101 |
| s01ru := uint32(src.Pix[s01i+0]) * s01au / 0xff |
| s01gu := uint32(src.Pix[s01i+1]) * s01au / 0xff |
| s01bu := uint32(src.Pix[s01i+2]) * s01au / 0xff |
| s01r := float64(s01ru) |
| s01g := float64(s01gu) |
| s01b := float64(s01bu) |
| s01a := float64(s01au) |
| s11i := (sr.Min.Y+int(sy1)-src.Rect.Min.Y)*src.Stride + (sr.Min.X+int(sx1)-src.Rect.Min.X)*4 |
| s11au := uint32(src.Pix[s11i+3]) * 0x101 |
| s11ru := uint32(src.Pix[s11i+0]) * s11au / 0xff |
| s11gu := uint32(src.Pix[s11i+1]) * s11au / 0xff |
| s11bu := uint32(src.Pix[s11i+2]) * s11au / 0xff |
| s11r := float64(s11ru) |
| s11g := float64(s11gu) |
| s11b := float64(s11bu) |
| s11a := float64(s11au) |
| s11r = xFrac1*s01r + xFrac0*s11r |
| s11g = xFrac1*s01g + xFrac0*s11g |
| s11b = xFrac1*s01b + xFrac0*s11b |
| s11a = xFrac1*s01a + xFrac0*s11a |
| s11r = yFrac1*s10r + yFrac0*s11r |
| s11g = yFrac1*s10g + yFrac0*s11g |
| s11b = yFrac1*s10b + yFrac0*s11b |
| s11a = yFrac1*s10a + yFrac0*s11a |
| pr := uint32(s11r) |
| pg := uint32(s11g) |
| pb := uint32(s11b) |
| pa := uint32(s11a) |
| dst.Pix[d+0] = uint8(pr >> 8) |
| dst.Pix[d+1] = uint8(pg >> 8) |
| dst.Pix[d+2] = uint8(pb >> 8) |
| dst.Pix[d+3] = uint8(pa >> 8) |
| } |
| } |
| } |
| |
| func (ablInterpolator) scale_RGBA_RGBA_Over(dst *image.RGBA, dr, adr image.Rectangle, src *image.RGBA, sr image.Rectangle, opts *Options) { |
| sw := int32(sr.Dx()) |
| sh := int32(sr.Dy()) |
| yscale := float64(sh) / float64(dr.Dy()) |
| xscale := float64(sw) / float64(dr.Dx()) |
| swMinus1, shMinus1 := sw-1, sh-1 |
| |
| for dy := int32(adr.Min.Y); dy < int32(adr.Max.Y); dy++ { |
| sy := (float64(dy)+0.5)*yscale - 0.5 |
| // If sy < 0, we will clamp sy0 to 0 anyway, so it doesn't matter if |
| // we say int32(sy) instead of int32(math.Floor(sy)). Similarly for |
| // sx, below. |
| sy0 := int32(sy) |
| yFrac0 := sy - float64(sy0) |
| yFrac1 := 1 - yFrac0 |
| sy1 := sy0 + 1 |
| if sy < 0 { |
| sy0, sy1 = 0, 0 |
| yFrac0, yFrac1 = 0, 1 |
| } else if sy1 > shMinus1 { |
| sy0, sy1 = shMinus1, shMinus1 |
| yFrac0, yFrac1 = 1, 0 |
| } |
| d := (dr.Min.Y+int(dy)-dst.Rect.Min.Y)*dst.Stride + (dr.Min.X+adr.Min.X-dst.Rect.Min.X)*4 |
| |
| for dx := int32(adr.Min.X); dx < int32(adr.Max.X); dx, d = dx+1, d+4 { |
| sx := (float64(dx)+0.5)*xscale - 0.5 |
| sx0 := int32(sx) |
| xFrac0 := sx - float64(sx0) |
| xFrac1 := 1 - xFrac0 |
| sx1 := sx0 + 1 |
| if sx < 0 { |
| sx0, sx1 = 0, 0 |
| xFrac0, xFrac1 = 0, 1 |
| } else if sx1 > swMinus1 { |
| sx0, sx1 = swMinus1, swMinus1 |
| xFrac0, xFrac1 = 1, 0 |
| } |
| |
| s00i := (sr.Min.Y+int(sy0)-src.Rect.Min.Y)*src.Stride + (sr.Min.X+int(sx0)-src.Rect.Min.X)*4 |
| s00ru := uint32(src.Pix[s00i+0]) * 0x101 |
| s00gu := uint32(src.Pix[s00i+1]) * 0x101 |
| s00bu := uint32(src.Pix[s00i+2]) * 0x101 |
| s00au := uint32(src.Pix[s00i+3]) * 0x101 |
| s00r := float64(s00ru) |
| s00g := float64(s00gu) |
| s00b := float64(s00bu) |
| s00a := float64(s00au) |
| s10i := (sr.Min.Y+int(sy0)-src.Rect.Min.Y)*src.Stride + (sr.Min.X+int(sx1)-src.Rect.Min.X)*4 |
| s10ru := uint32(src.Pix[s10i+0]) * 0x101 |
| s10gu := uint32(src.Pix[s10i+1]) * 0x101 |
| s10bu := uint32(src.Pix[s10i+2]) * 0x101 |
| s10au := uint32(src.Pix[s10i+3]) * 0x101 |
| s10r := float64(s10ru) |
| s10g := float64(s10gu) |
| s10b := float64(s10bu) |
| s10a := float64(s10au) |
| s10r = xFrac1*s00r + xFrac0*s10r |
| s10g = xFrac1*s00g + xFrac0*s10g |
| s10b = xFrac1*s00b + xFrac0*s10b |
| s10a = xFrac1*s00a + xFrac0*s10a |
| s01i := (sr.Min.Y+int(sy1)-src.Rect.Min.Y)*src.Stride + (sr.Min.X+int(sx0)-src.Rect.Min.X)*4 |
| s01ru := uint32(src.Pix[s01i+0]) * 0x101 |
| s01gu := uint32(src.Pix[s01i+1]) * 0x101 |
| s01bu := uint32(src.Pix[s01i+2]) * 0x101 |
| s01au := uint32(src.Pix[s01i+3]) * 0x101 |
| s01r := float64(s01ru) |
| s01g := float64(s01gu) |
| s01b := float64(s01bu) |
| s01a := float64(s01au) |
| s11i := (sr.Min.Y+int(sy1)-src.Rect.Min.Y)*src.Stride + (sr.Min.X+int(sx1)-src.Rect.Min.X)*4 |
| s11ru := uint32(src.Pix[s11i+0]) * 0x101 |
| s11gu := uint32(src.Pix[s11i+1]) * 0x101 |
| s11bu := uint32(src.Pix[s11i+2]) * 0x101 |
| s11au := uint32(src.Pix[s11i+3]) * 0x101 |
| s11r := float64(s11ru) |
| s11g := float64(s11gu) |
| s11b := float64(s11bu) |
| s11a := float64(s11au) |
| s11r = xFrac1*s01r + xFrac0*s11r |
| s11g = xFrac1*s01g + xFrac0*s11g |
| s11b = xFrac1*s01b + xFrac0*s11b |
| s11a = xFrac1*s01a + xFrac0*s11a |
| s11r = yFrac1*s10r + yFrac0*s11r |
| s11g = yFrac1*s10g + yFrac0*s11g |
| s11b = yFrac1*s10b + yFrac0*s11b |
| s11a = yFrac1*s10a + yFrac0*s11a |
| pr := uint32(s11r) |
| pg := uint32(s11g) |
| pb := uint32(s11b) |
| pa := uint32(s11a) |
| pa1 := (0xffff - pa) * 0x101 |
| dst.Pix[d+0] = uint8((uint32(dst.Pix[d+0])*pa1/0xffff + pr) >> 8) |
| dst.Pix[d+1] = uint8((uint32(dst.Pix[d+1])*pa1/0xffff + pg) >> 8) |
| dst.Pix[d+2] = uint8((uint32(dst.Pix[d+2])*pa1/0xffff + pb) >> 8) |
| dst.Pix[d+3] = uint8((uint32(dst.Pix[d+3])*pa1/0xffff + pa) >> 8) |
| } |
| } |
| } |
| |
| func (ablInterpolator) scale_RGBA_RGBA_Src(dst *image.RGBA, dr, adr image.Rectangle, src *image.RGBA, sr image.Rectangle, opts *Options) { |
| sw := int32(sr.Dx()) |
| sh := int32(sr.Dy()) |
| yscale := float64(sh) / float64(dr.Dy()) |
| xscale := float64(sw) / float64(dr.Dx()) |
| swMinus1, shMinus1 := sw-1, sh-1 |
| |
| for dy := int32(adr.Min.Y); dy < int32(adr.Max.Y); dy++ { |
| sy := (float64(dy)+0.5)*yscale - 0.5 |
| // If sy < 0, we will clamp sy0 to 0 anyway, so it doesn't matter if |
| // we say int32(sy) instead of int32(math.Floor(sy)). Similarly for |
| // sx, below. |
| sy0 := int32(sy) |
| yFrac0 := sy - float64(sy0) |
| yFrac1 := 1 - yFrac0 |
| sy1 := sy0 + 1 |
| if sy < 0 { |
| sy0, sy1 = 0, 0 |
| yFrac0, yFrac1 = 0, 1 |
| } else if sy1 > shMinus1 { |
| sy0, sy1 = shMinus1, shMinus1 |
| yFrac0, yFrac1 = 1, 0 |
| } |
| d := (dr.Min.Y+int(dy)-dst.Rect.Min.Y)*dst.Stride + (dr.Min.X+adr.Min.X-dst.Rect.Min.X)*4 |
| |
| for dx := int32(adr.Min.X); dx < int32(adr.Max.X); dx, d = dx+1, d+4 { |
| sx := (float64(dx)+0.5)*xscale - 0.5 |
| sx0 := int32(sx) |
| xFrac0 := sx - float64(sx0) |
| xFrac1 := 1 - xFrac0 |
| sx1 := sx0 + 1 |
| if sx < 0 { |
| sx0, sx1 = 0, 0 |
| xFrac0, xFrac1 = 0, 1 |
| } else if sx1 > swMinus1 { |
| sx0, sx1 = swMinus1, swMinus1 |
| xFrac0, xFrac1 = 1, 0 |
| } |
| |
| s00i := (sr.Min.Y+int(sy0)-src.Rect.Min.Y)*src.Stride + (sr.Min.X+int(sx0)-src.Rect.Min.X)*4 |
| s00ru := uint32(src.Pix[s00i+0]) * 0x101 |
| s00gu := uint32(src.Pix[s00i+1]) * 0x101 |
| s00bu := uint32(src.Pix[s00i+2]) * 0x101 |
| s00au := uint32(src.Pix[s00i+3]) * 0x101 |
| s00r := float64(s00ru) |
| s00g := float64(s00gu) |
| s00b := float64(s00bu) |
| s00a := float64(s00au) |
| s10i := (sr.Min.Y+int(sy0)-src.Rect.Min.Y)*src.Stride + (sr.Min.X+int(sx1)-src.Rect.Min.X)*4 |
| s10ru := uint32(src.Pix[s10i+0]) * 0x101 |
| s10gu := uint32(src.Pix[s10i+1]) * 0x101 |
| s10bu := uint32(src.Pix[s10i+2]) * 0x101 |
| s10au := uint32(src.Pix[s10i+3]) * 0x101 |
| s10r := float64(s10ru) |
| s10g := float64(s10gu) |
| s10b := float64(s10bu) |
| s10a := float64(s10au) |
| s10r = xFrac1*s00r + xFrac0*s10r |
| s10g = xFrac1*s00g + xFrac0*s10g |
| s10b = xFrac1*s00b + xFrac0*s10b |
| s10a = xFrac1*s00a + xFrac0*s10a |
| s01i := (sr.Min.Y+int(sy1)-src.Rect.Min.Y)*src.Stride + (sr.Min.X+int(sx0)-src.Rect.Min.X)*4 |
| s01ru := uint32(src.Pix[s01i+0]) * 0x101 |
| s01gu := uint32(src.Pix[s01i+1]) * 0x101 |
| s01bu := uint32(src.Pix[s01i+2]) * 0x101 |
| s01au := uint32(src.Pix[s01i+3]) * 0x101 |
| s01r := float64(s01ru) |
| s01g := float64(s01gu) |
| s01b := float64(s01bu) |
| s01a := float64(s01au) |
| s11i := (sr.Min.Y+int(sy1)-src.Rect.Min.Y)*src.Stride + (sr.Min.X+int(sx1)-src.Rect.Min.X)*4 |
| s11ru := uint32(src.Pix[s11i+0]) * 0x101 |
| s11gu := uint32(src.Pix[s11i+1]) * 0x101 |
| s11bu := uint32(src.Pix[s11i+2]) * 0x101 |
| s11au := uint32(src.Pix[s11i+3]) * 0x101 |
| s11r := float64(s11ru) |
| s11g := float64(s11gu) |
| s11b := float64(s11bu) |
| s11a := float64(s11au) |
| s11r = xFrac1*s01r + xFrac0*s11r |
| s11g = xFrac1*s01g + xFrac0*s11g |
| s11b = xFrac1*s01b + xFrac0*s11b |
| s11a = xFrac1*s01a + xFrac0*s11a |
| s11r = yFrac1*s10r + yFrac0*s11r |
| s11g = yFrac1*s10g + yFrac0*s11g |
| s11b = yFrac1*s10b + yFrac0*s11b |
| s11a = yFrac1*s10a + yFrac0*s11a |
| pr := uint32(s11r) |
| pg := uint32(s11g) |
| pb := uint32(s11b) |
| pa := uint32(s11a) |
| dst.Pix[d+0] = uint8(pr >> 8) |
| dst.Pix[d+1] = uint8(pg >> 8) |
| dst.Pix[d+2] = uint8(pb >> 8) |
| dst.Pix[d+3] = uint8(pa >> 8) |
| } |
| } |
| } |
| |
| func (ablInterpolator) scale_RGBA_YCbCr444_Src(dst *image.RGBA, dr, adr image.Rectangle, src *image.YCbCr, sr image.Rectangle, opts *Options) { |
| sw := int32(sr.Dx()) |
| sh := int32(sr.Dy()) |
| yscale := float64(sh) / float64(dr.Dy()) |
| xscale := float64(sw) / float64(dr.Dx()) |
| swMinus1, shMinus1 := sw-1, sh-1 |
| |
| for dy := int32(adr.Min.Y); dy < int32(adr.Max.Y); dy++ { |
| sy := (float64(dy)+0.5)*yscale - 0.5 |
| // If sy < 0, we will clamp sy0 to 0 anyway, so it doesn't matter if |
| // we say int32(sy) instead of int32(math.Floor(sy)). Similarly for |
| // sx, below. |
| sy0 := int32(sy) |
| yFrac0 := sy - float64(sy0) |
| yFrac1 := 1 - yFrac0 |
| sy1 := sy0 + 1 |
| if sy < 0 { |
| sy0, sy1 = 0, 0 |
| yFrac0, yFrac1 = 0, 1 |
| } else if sy1 > shMinus1 { |
| sy0, sy1 = shMinus1, shMinus1 |
| yFrac0, yFrac1 = 1, 0 |
| } |
| d := (dr.Min.Y+int(dy)-dst.Rect.Min.Y)*dst.Stride + (dr.Min.X+adr.Min.X-dst.Rect.Min.X)*4 |
| |
| for dx := int32(adr.Min.X); dx < int32(adr.Max.X); dx, d = dx+1, d+4 { |
| sx := (float64(dx)+0.5)*xscale - 0.5 |
| sx0 := int32(sx) |
| xFrac0 := sx - float64(sx0) |
| xFrac1 := 1 - xFrac0 |
| sx1 := sx0 + 1 |
| if sx < 0 { |
| sx0, sx1 = 0, 0 |
| xFrac0, xFrac1 = 0, 1 |
| } else if sx1 > swMinus1 { |
| sx0, sx1 = swMinus1, swMinus1 |
| xFrac0, xFrac1 = 1, 0 |
| } |
| |
| s00i := (sr.Min.Y+int(sy0)-src.Rect.Min.Y)*src.YStride + (sr.Min.X + int(sx0) - src.Rect.Min.X) |
| s00j := (sr.Min.Y+int(sy0)-src.Rect.Min.Y)*src.CStride + (sr.Min.X + int(sx0) - src.Rect.Min.X) |
| |
| // This is an inline version of image/color/ycbcr.go's YCbCr.RGBA method. |
| s00yy1 := int(src.Y[s00i]) * 0x10101 |
| s00cb1 := int(src.Cb[s00j]) - 128 |
| s00cr1 := int(src.Cr[s00j]) - 128 |
| s00ru := (s00yy1 + 91881*s00cr1) >> 8 |
| s00gu := (s00yy1 - 22554*s00cb1 - 46802*s00cr1) >> 8 |
| s00bu := (s00yy1 + 116130*s00cb1) >> 8 |
| if s00ru < 0 { |
| s00ru = 0 |
| } else if s00ru > 0xffff { |
| s00ru = 0xffff |
| } |
| if s00gu < 0 { |
| s00gu = 0 |
| } else if s00gu > 0xffff { |
| s00gu = 0xffff |
| } |
| if s00bu < 0 { |
| s00bu = 0 |
| } else if s00bu > 0xffff { |
| s00bu = 0xffff |
| } |
| |
| s00r := float64(s00ru) |
| s00g := float64(s00gu) |
| s00b := float64(s00bu) |
| s10i := (sr.Min.Y+int(sy0)-src.Rect.Min.Y)*src.YStride + (sr.Min.X + int(sx1) - src.Rect.Min.X) |
| s10j := (sr.Min.Y+int(sy0)-src.Rect.Min.Y)*src.CStride + (sr.Min.X + int(sx1) - src.Rect.Min.X) |
| |
| // This is an inline version of image/color/ycbcr.go's YCbCr.RGBA method. |
| s10yy1 := int(src.Y[s10i]) * 0x10101 |
| s10cb1 := int(src.Cb[s10j]) - 128 |
| s10cr1 := int(src.Cr[s10j]) - 128 |
| s10ru := (s10yy1 + 91881*s10cr1) >> 8 |
| s10gu := (s10yy1 - 22554*s10cb1 - 46802*s10cr1) >> 8 |
| s10bu := (s10yy1 + 116130*s10cb1) >> 8 |
| if s10ru < 0 { |
| s10ru = 0 |
| } else if s10ru > 0xffff { |
| s10ru = 0xffff |
| } |
| if s10gu < 0 { |
| s10gu = 0 |
| } else if s10gu > 0xffff { |
| s10gu = 0xffff |
| } |
| if s10bu < 0 { |
| s10bu = 0 |
| } else if s10bu > 0xffff { |
| s10bu = 0xffff |
| } |
| |
| s10r := float64(s10ru) |
| s10g := float64(s10gu) |
| s10b := float64(s10bu) |
| s10r = xFrac1*s00r + xFrac0*s10r |
| s10g = xFrac1*s00g + xFrac0*s10g |
| s10b = xFrac1*s00b + xFrac0*s10b |
| s01i := (sr.Min.Y+int(sy1)-src.Rect.Min.Y)*src.YStride + (sr.Min.X + int(sx0) - src.Rect.Min.X) |
| s01j := (sr.Min.Y+int(sy1)-src.Rect.Min.Y)*src.CStride + (sr.Min.X + int(sx0) - src.Rect.Min.X) |
| |
| // This is an inline version of image/color/ycbcr.go's YCbCr.RGBA method. |
| s01yy1 := int(src.Y[s01i]) * 0x10101 |
| s01cb1 := int(src.Cb[s01j]) - 128 |
| s01cr1 := int(src.Cr[s01j]) - 128 |
| s01ru := (s01yy1 + 91881*s01cr1) >> 8 |
| s01gu := (s01yy1 - 22554*s01cb1 - 46802*s01cr1) >> 8 |
| s01bu := (s01yy1 + 116130*s01cb1) >> 8 |
| if s01ru < 0 { |
| s01ru = 0 |
| } else if s01ru > 0xffff { |
| s01ru = 0xffff |
| } |
| if s01gu < 0 { |
| s01gu = 0 |
| } else if s01gu > 0xffff { |
| s01gu = 0xffff |
| } |
| if s01bu < 0 { |
| s01bu = 0 |
| } else if s01bu > 0xffff { |
| s01bu = 0xffff |
| } |
| |
| s01r := float64(s01ru) |
| s01g := float64(s01gu) |
| s01b := float64(s01bu) |
| s11i := (sr.Min.Y+int(sy1)-src.Rect.Min.Y)*src.YStride + (sr.Min.X + int(sx1) - src.Rect.Min.X) |
| s11j := (sr.Min.Y+int(sy1)-src.Rect.Min.Y)*src.CStride + (sr.Min.X + int(sx1) - src.Rect.Min.X) |
| |
| // This is an inline version of image/color/ycbcr.go's YCbCr.RGBA method. |
| s11yy1 := int(src.Y[s11i]) * 0x10101 |
| s11cb1 := int(src.Cb[s11j]) - 128 |
| s11cr1 := int(src.Cr[s11j]) - 128 |
| s11ru := (s11yy1 + 91881*s11cr1) >> 8 |
| s11gu := (s11yy1 - 22554*s11cb1 - 46802*s11cr1) >> 8 |
| s11bu := (s11yy1 + 116130*s11cb1) >> 8 |
| if s11ru < 0 { |
| s11ru = 0 |
| } else if s11ru > 0xffff { |
| s11ru = 0xffff |
| } |
| if s11gu < 0 { |
| s11gu = 0 |
| } else if s11gu > 0xffff { |
| s11gu = 0xffff |
| } |
| if s11bu < 0 { |
| s11bu = 0 |
| } else if s11bu > 0xffff { |
| s11bu = 0xffff |
| } |
| |
| s11r := float64(s11ru) |
| s11g := float64(s11gu) |
| s11b := float64(s11bu) |
| s11r = xFrac1*s01r + xFrac0*s11r |
| s11g = xFrac1*s01g + xFrac0*s11g |
| s11b = xFrac1*s01b + xFrac0*s11b |
| s11r = yFrac1*s10r + yFrac0*s11r |
| s11g = yFrac1*s10g + yFrac0*s11g |
| s11b = yFrac1*s10b + yFrac0*s11b |
| pr := uint32(s11r) |
| pg := uint32(s11g) |
| pb := uint32(s11b) |
| dst.Pix[d+0] = uint8(pr >> 8) |
| dst.Pix[d+1] = uint8(pg >> 8) |
| dst.Pix[d+2] = uint8(pb >> 8) |
| dst.Pix[d+3] = 0xff |
| } |
| } |
| } |
| |
| func (ablInterpolator) scale_RGBA_YCbCr422_Src(dst *image.RGBA, dr, adr image.Rectangle, src *image.YCbCr, sr image.Rectangle, opts *Options) { |
| sw := int32(sr.Dx()) |
| sh := int32(sr.Dy()) |
| yscale := float64(sh) / float64(dr.Dy()) |
| xscale := float64(sw) / float64(dr.Dx()) |
| swMinus1, shMinus1 := sw-1, sh-1 |
| |
| for dy := int32(adr.Min.Y); dy < int32(adr.Max.Y); dy++ { |
| sy := (float64(dy)+0.5)*yscale - 0.5 |
| // If sy < 0, we will clamp sy0 to 0 anyway, so it doesn't matter if |
| // we say int32(sy) instead of int32(math.Floor(sy)). Similarly for |
| // sx, below. |
| sy0 := int32(sy) |
| yFrac0 := sy - float64(sy0) |
| yFrac1 := 1 - yFrac0 |
| sy1 := sy0 + 1 |
| if sy < 0 { |
| sy0, sy1 = 0, 0 |
| yFrac0, yFrac1 = 0, 1 |
| } else if sy1 > shMinus1 { |
| sy0, sy1 = shMinus1, shMinus1 |
| yFrac0, yFrac1 = 1, 0 |
| } |
| d := (dr.Min.Y+int(dy)-dst.Rect.Min.Y)*dst.Stride + (dr.Min.X+adr.Min.X-dst.Rect.Min.X)*4 |
| |
| for dx := int32(adr.Min.X); dx < int32(adr.Max.X); dx, d = dx+1, d+4 { |
| sx := (float64(dx)+0.5)*xscale - 0.5 |
| sx0 := int32(sx) |
| xFrac0 := sx - float64(sx0) |
| xFrac1 := 1 - xFrac0 |
| sx1 := sx0 + 1 |
| if sx < 0 { |
| sx0, sx1 = 0, 0 |
| xFrac0, xFrac1 = 0, 1 |
| } else if sx1 > swMinus1 { |
| sx0, sx1 = swMinus1, swMinus1 |
| xFrac0, xFrac1 = 1, 0 |
| } |
| |
| s00i := (sr.Min.Y+int(sy0)-src.Rect.Min.Y)*src.YStride + (sr.Min.X + int(sx0) - src.Rect.Min.X) |
| s00j := (sr.Min.Y+int(sy0)-src.Rect.Min.Y)*src.CStride + ((sr.Min.X+int(sx0))/2 - src.Rect.Min.X/2) |
| |
| // This is an inline version of image/color/ycbcr.go's YCbCr.RGBA method. |
| s00yy1 := int(src.Y[s00i]) * 0x10101 |
| s00cb1 := int(src.Cb[s00j]) - 128 |
| s00cr1 := int(src.Cr[s00j]) - 128 |
| s00ru := (s00yy1 + 91881*s00cr1) >> 8 |
| s00gu := (s00yy1 - 22554*s00cb1 - 46802*s00cr1) >> 8 |
| s00bu := (s00yy1 + 116130*s00cb1) >> 8 |
| if s00ru < 0 { |
| s00ru = 0 |
| } else if s00ru > 0xffff { |
| s00ru = 0xffff |
| } |
| if s00gu < 0 { |
| s00gu = 0 |
| } else if s00gu > 0xffff { |
| s00gu = 0xffff |
| } |
| if s00bu < 0 { |
| s00bu = 0 |
| } else if s00bu > 0xffff { |
| s00bu = 0xffff |
| } |
| |
| s00r := float64(s00ru) |
| s00g := float64(s00gu) |
| s00b := float64(s00bu) |
| s10i := (sr.Min.Y+int(sy0)-src.Rect.Min.Y)*src.YStride + (sr.Min.X + int(sx1) - src.Rect.Min.X) |
| s10j := (sr.Min.Y+int(sy0)-src.Rect.Min.Y)*src.CStride + ((sr.Min.X+int(sx1))/2 - src.Rect.Min.X/2) |
| |
| // This is an inline version of image/color/ycbcr.go's YCbCr.RGBA method. |
| s10yy1 := int(src.Y[s10i]) * 0x10101 |
| s10cb1 := int(src.Cb[s10j]) - 128 |
| s10cr1 := int(src.Cr[s10j]) - 128 |
| s10ru := (s10yy1 + 91881*s10cr1) >> 8 |
| s10gu := (s10yy1 - 22554*s10cb1 - 46802*s10cr1) >> 8 |
| s10bu := (s10yy1 + 116130*s10cb1) >> 8 |
| if s10ru < 0 { |
| s10ru = 0 |
| } else if s10ru > 0xffff { |
| s10ru = 0xffff |
| } |
| if s10gu < 0 { |
| s10gu = 0 |
| } else if s10gu > 0xffff { |
| s10gu = 0xffff |
| } |
| if s10bu < 0 { |
| s10bu = 0 |
| } else if s10bu > 0xffff { |
| s10bu = 0xffff |
| } |
| |
| s10r := float64(s10ru) |
| s10g := float64(s10gu) |
| s10b := float64(s10bu) |
| s10r = xFrac1*s00r + xFrac0*s10r |
| s10g = xFrac1*s00g + xFrac0*s10g |
| s10b = xFrac1*s00b + xFrac0*s10b |
| s01i := (sr.Min.Y+int(sy1)-src.Rect.Min.Y)*src.YStride + (sr.Min.X + int(sx0) - src.Rect.Min.X) |
| s01j := (sr.Min.Y+int(sy1)-src.Rect.Min.Y)*src.CStride + ((sr.Min.X+int(sx0))/2 - src.Rect.Min.X/2) |
| |
| // This is an inline version of image/color/ycbcr.go's YCbCr.RGBA method. |
| s01yy1 := int(src.Y[s01i]) * 0x10101 |
| s01cb1 := int(src.Cb[s01j]) - 128 |
| s01cr1 := int(src.Cr[s01j]) - 128 |
| s01ru := (s01yy1 + 91881*s01cr1) >> 8 |
| s01gu := (s01yy1 - 22554*s01cb1 - 46802*s01cr1) >> 8 |
| s01bu := (s01yy1 + 116130*s01cb1) >> 8 |
| if s01ru < 0 { |
| s01ru = 0 |
| } else if s01ru > 0xffff { |
| s01ru = 0xffff |
| } |
| if s01gu < 0 { |
| s01gu = 0 |
| } else if s01gu > 0xffff { |
| s01gu = 0xffff |
| } |
| if s01bu < 0 { |
| s01bu = 0 |
| } else if s01bu > 0xffff { |
| s01bu = 0xffff |
| } |
| |
| s01r := float64(s01ru) |
| s01g := float64(s01gu) |
| s01b := float64(s01bu) |
| s11i := (sr.Min.Y+int(sy1)-src.Rect.Min.Y)*src.YStride + (sr.Min.X + int(sx1) - src.Rect.Min.X) |
| s11j := (sr.Min.Y+int(sy1)-src.Rect.Min.Y)*src.CStride + ((sr.Min.X+int(sx1))/2 - src.Rect.Min.X/2) |
| |
| // This is an inline version of image/color/ycbcr.go's YCbCr.RGBA method. |
| s11yy1 := int(src.Y[s11i]) * 0x10101 |
| s11cb1 := int(src.Cb[s11j]) - 128 |
| s11cr1 := int(src.Cr[s11j]) - 128 |
| s11ru := (s11yy1 + 91881*s11cr1) >> 8 |
| s11gu := (s11yy1 - 22554*s11cb1 - 46802*s11cr1) >> 8 |
| s11bu := (s11yy1 + 116130*s11cb1) >> 8 |
| if s11ru < 0 { |
| s11ru = 0 |
| } else if s11ru > 0xffff { |
| s11ru = 0xffff |
| } |
| if s11gu < 0 { |
| s11gu = 0 |
| } else if s11gu > 0xffff { |
| s11gu = 0xffff |
| } |
| if s11bu < 0 { |
| s11bu = 0 |
| } else if s11bu > 0xffff { |
| s11bu = 0xffff |
| } |
| |
| s11r := float64(s11ru) |
| s11g := float64(s11gu) |
| s11b := float64(s11bu) |
| s11r = xFrac1*s01r + xFrac0*s11r |
| s11g = xFrac1*s01g + xFrac0*s11g |
| s11b = xFrac1*s01b + xFrac0*s11b |
| s11r = yFrac1*s10r + yFrac0*s11r |
| s11g = yFrac1*s10g + yFrac0*s11g |
| s11b = yFrac1*s10b + yFrac0*s11b |
| pr := uint32(s11r) |
| pg := uint32(s11g) |
| pb := uint32(s11b) |
| dst.Pix[d+0] = uint8(pr >> 8) |
| dst.Pix[d+1] = uint8(pg >> 8) |
| dst.Pix[d+2] = uint8(pb >> 8) |
| dst.Pix[d+3] = 0xff |
| } |
| } |
| } |
| |
| func (ablInterpolator) scale_RGBA_YCbCr420_Src(dst *image.RGBA, dr, adr image.Rectangle, src *image.YCbCr, sr image.Rectangle, opts *Options) { |
| sw := int32(sr.Dx()) |
| sh := int32(sr.Dy()) |
| yscale := float64(sh) / float64(dr.Dy()) |
| xscale := float64(sw) / float64(dr.Dx()) |
| swMinus1, shMinus1 := sw-1, sh-1 |
| |
| for dy := int32(adr.Min.Y); dy < int32(adr.Max.Y); dy++ { |
| sy := (float64(dy)+0.5)*yscale - 0.5 |
| // If sy < 0, we will clamp sy0 to 0 anyway, so it doesn't matter if |
| // we say int32(sy) instead of int32(math.Floor(sy)). Similarly for |
| // sx, below. |
| sy0 := int32(sy) |
| yFrac0 := sy - float64(sy0) |
| yFrac1 := 1 - yFrac0 |
| sy1 := sy0 + 1 |
| if sy < 0 { |
| sy0, sy1 = 0, 0 |
| yFrac0, yFrac1 = 0, 1 |
| } else if sy1 > shMinus1 { |
| sy0, sy1 = shMinus1, shMinus1 |
| yFrac0, yFrac1 = 1, 0 |
| } |
| d := (dr.Min.Y+int(dy)-dst.Rect.Min.Y)*dst.Stride + (dr.Min.X+adr.Min.X-dst.Rect.Min.X)*4 |
| |
| for dx := int32(adr.Min.X); dx < int32(adr.Max.X); dx, d = dx+1, d+4 { |
| sx := (float64(dx)+0.5)*xscale - 0.5 |
| sx0 := int32(sx) |
| xFrac0 := sx - float64(sx0) |
| xFrac1 := 1 - xFrac0 |
| sx1 := sx0 + 1 |
| if sx < 0 { |
| sx0, sx1 = 0, 0 |
| xFrac0, xFrac1 = 0, 1 |
| } else if sx1 > swMinus1 { |
| sx0, sx1 = swMinus1, swMinus1 |
| xFrac0, xFrac1 = 1, 0 |
| } |
| |
| s00i := (sr.Min.Y+int(sy0)-src.Rect.Min.Y)*src.YStride + (sr.Min.X + int(sx0) - src.Rect.Min.X) |
| s00j := ((sr.Min.Y+int(sy0))/2-src.Rect.Min.Y/2)*src.CStride + ((sr.Min.X+int(sx0))/2 - src.Rect.Min.X/2) |
| |
| // This is an inline version of image/color/ycbcr.go's YCbCr.RGBA method. |
| s00yy1 := int(src.Y[s00i]) * 0x10101 |
| s00cb1 := int(src.Cb[s00j]) - 128 |
| s00cr1 := int(src.Cr[s00j]) - 128 |
| s00ru := (s00yy1 + 91881*s00cr1) >> 8 |
| s00gu := (s00yy1 - 22554*s00cb1 - 46802*s00cr1) >> 8 |
| s00bu := (s00yy1 + 116130*s00cb1) >> 8 |
| if s00ru < 0 { |
| s00ru = 0 |
| } else if s00ru > 0xffff { |
| s00ru = 0xffff |
| } |
| if s00gu < 0 { |
| s00gu = 0 |
| } else if s00gu > 0xffff { |
| s00gu = 0xffff |
| } |
| if s00bu < 0 { |
| s00bu = 0 |
| } else if s00bu > 0xffff { |
| s00bu = 0xffff |
| } |
| |
| s00r := float64(s00ru) |
| s00g := float64(s00gu) |
| s00b := float64(s00bu) |
| s10i := (sr.Min.Y+int(sy0)-src.Rect.Min.Y)*src.YStride + (sr.Min.X + int(sx1) - src.Rect.Min.X) |
| s10j := ((sr.Min.Y+int(sy0))/2-src.Rect.Min.Y/2)*src.CStride + ((sr.Min.X+int(sx1))/2 - src.Rect.Min.X/2) |
| |
| // This is an inline version of image/color/ycbcr.go's YCbCr.RGBA method. |
| s10yy1 := int(src.Y[s10i]) * 0x10101 |
| s10cb1 := int(src.Cb[s10j]) - 128 |
| s10cr1 := int(src.Cr[s10j]) - 128 |
| s10ru := (s10yy1 + 91881*s10cr1) >> 8 |
| s10gu := (s10yy1 - 22554*s10cb1 - 46802*s10cr1) >> 8 |
| s10bu := (s10yy1 + 116130*s10cb1) >> 8 |
| if s10ru < 0 { |
| s10ru = 0 |
| } else if s10ru > 0xffff { |
| s10ru = 0xffff |
| } |
| if s10gu < 0 { |
| s10gu = 0 |
| } else if s10gu > 0xffff { |
| s10gu = 0xffff |
| } |
| if s10bu < 0 { |
| s10bu = 0 |
| } else if s10bu > 0xffff { |
| s10bu = 0xffff |
| } |
| |
| s10r := float64(s10ru) |
| s10g := float64(s10gu) |
| s10b := float64(s10bu) |
| s10r = xFrac1*s00r + xFrac0*s10r |
| s10g = xFrac1*s00g + xFrac0*s10g |
| s10b = xFrac1*s00b + xFrac0*s10b |
| s01i := (sr.Min.Y+int(sy1)-src.Rect.Min.Y)*src.YStride + (sr.Min.X + int(sx0) - src.Rect.Min.X) |
| s01j := ((sr.Min.Y+int(sy1))/2-src.Rect.Min.Y/2)*src.CStride + ((sr.Min.X+int(sx0))/2 - src.Rect.Min.X/2) |
| |
| // This is an inline version of image/color/ycbcr.go's YCbCr.RGBA method. |
| s01yy1 := int(src.Y[s01i]) * 0x10101 |
| s01cb1 := int(src.Cb[s01j]) - 128 |
| s01cr1 := int(src.Cr[s01j]) - 128 |
| s01ru := (s01yy1 + 91881*s01cr1) >> 8 |
| s01gu := (s01yy1 - 22554*s01cb1 - 46802*s01cr1) >> 8 |
| s01bu := (s01yy1 + 116130*s01cb1) >> 8 |
| if s01ru < 0 { |
| s01ru = 0 |
| } else if s01ru > 0xffff { |
| s01ru = 0xffff |
| } |
| if s01gu < 0 { |
| s01gu = 0 |
| } else if s01gu > 0xffff { |
| s01gu = 0xffff |
| } |
| if s01bu < 0 { |
| s01bu = 0 |
| } else if s01bu > 0xffff { |
| s01bu = 0xffff |
| } |
| |
| s01r := float64(s01ru) |
| s01g := float64(s01gu) |
| s01b := float64(s01bu) |
| s11i := (sr.Min.Y+int(sy1)-src.Rect.Min.Y)*src.YStride + (sr.Min.X + int(sx1) - src.Rect.Min.X) |
| s11j := ((sr.Min.Y+int(sy1))/2-src.Rect.Min.Y/2)*src.CStride + ((sr.Min.X+int(sx1))/2 - src.Rect.Min.X/2) |
| |
| // This is an inline version of image/color/ycbcr.go's YCbCr.RGBA method. |
| s11yy1 := int(src.Y[s11i]) * 0x10101 |
| s11cb1 := int(src.Cb[s11j]) - 128 |
| s11cr1 := int(src.Cr[s11j]) - 128 |
| s11ru := (s11yy1 + 91881*s11cr1) >> 8 |
| s11gu := (s11yy1 - 22554*s11cb1 - 46802*s11cr1) >> 8 |
| s11bu := (s11yy1 + 116130*s11cb1) >> 8 |
| if s11ru < 0 { |
| s11ru = 0 |
| } else if s11ru > 0xffff { |
| s11ru = 0xffff |
| } |
| if s11gu < 0 { |
| s11gu = 0 |
| } else if s11gu > 0xffff { |
| s11gu = 0xffff |
| } |
| if s11bu < 0 { |
| s11bu = 0 |
| } else if s11bu > 0xffff { |
| s11bu = 0xffff |
| } |
| |
| s11r := float64(s11ru) |
| s11g := float64(s11gu) |
| s11b := float64(s11bu) |
| s11r = xFrac1*s01r + xFrac0*s11r |
| s11g = xFrac1*s01g + xFrac0*s11g |
| s11b = xFrac1*s01b + xFrac0*s11b |
| s11r = yFrac1*s10r + yFrac0*s11r |
| s11g = yFrac1*s10g + yFrac0*s11g |
| s11b = yFrac1*s10b + yFrac0*s11b |
| pr := uint32(s11r) |
| pg := uint32(s11g) |
| pb := uint32(s11b) |
| dst.Pix[d+0] = uint8(pr >> 8) |
| dst.Pix[d+1] = uint8(pg >> 8) |
| dst.Pix[d+2] = uint8(pb >> 8) |
| dst.Pix[d+3] = 0xff |
| } |
| } |
| } |
| |
| func (ablInterpolator) scale_RGBA_YCbCr440_Src(dst *image.RGBA, dr, adr image.Rectangle, src *image.YCbCr, sr image.Rectangle, opts *Options) { |
| sw := int32(sr.Dx()) |
| sh := int32(sr.Dy()) |
| yscale := float64(sh) / float64(dr.Dy()) |
| xscale := float64(sw) / float64(dr.Dx()) |
| swMinus1, shMinus1 := sw-1, sh-1 |
| |
| for dy := int32(adr.Min.Y); dy < int32(adr.Max.Y); dy++ { |
| sy := (float64(dy)+0.5)*yscale - 0.5 |
| // If sy < 0, we will clamp sy0 to 0 anyway, so it doesn't matter if |
| // we say int32(sy) instead of int32(math.Floor(sy)). Similarly for |
| // sx, below. |
| sy0 := int32(sy) |
| yFrac0 := sy - float64(sy0) |
| yFrac1 := 1 - yFrac0 |
| sy1 := sy0 + 1 |
| if sy < 0 { |
| sy0, sy1 = 0, 0 |
| yFrac0, yFrac1 = 0, 1 |
| } else if sy1 > shMinus1 { |
| sy0, sy1 = shMinus1, shMinus1 |
| yFrac0, yFrac1 = 1, 0 |
| } |
| d := (dr.Min.Y+int(dy)-dst.Rect.Min.Y)*dst.Stride + (dr.Min.X+adr.Min.X-dst.Rect.Min.X)*4 |
| |
| for dx := int32(adr.Min.X); dx < int32(adr.Max.X); dx, d = dx+1, d+4 { |
| sx := (float64(dx)+0.5)*xscale - 0.5 |
| sx0 := int32(sx) |
| xFrac0 := sx - float64(sx0) |
| xFrac1 := 1 - xFrac0 |
| sx1 := sx0 + 1 |
| if sx < 0 { |
| sx0, sx1 = 0, 0 |
| xFrac0, xFrac1 = 0, 1 |
| } else if sx1 > swMinus1 { |
| sx0, sx1 = swMinus1, swMinus1 |
| xFrac0, xFrac1 = 1, 0 |
| } |
| |
| s00i := (sr.Min.Y+int(sy0)-src.Rect.Min.Y)*src.YStride + (sr.Min.X + int(sx0) - src.Rect.Min.X) |
| s00j := ((sr.Min.Y+int(sy0))/2-src.Rect.Min.Y/2)*src.CStride + (sr.Min.X + int(sx0) - src.Rect.Min.X) |
| |
| // This is an inline version of image/color/ycbcr.go's YCbCr.RGBA method. |
| s00yy1 := int(src.Y[s00i]) * 0x10101 |
| s00cb1 := int(src.Cb[s00j]) - 128 |
| s00cr1 := int(src.Cr[s00j]) - 128 |
| s00ru := (s00yy1 + 91881*s00cr1) >> 8 |
| s00gu := (s00yy1 - 22554*s00cb1 - 46802*s00cr1) >> 8 |
| s00bu := (s00yy1 + 116130*s00cb1) >> 8 |
| if s00ru < 0 { |
| s00ru = 0 |
| } else if s00ru > 0xffff { |
| s00ru = 0xffff |
| } |
| if s00gu < 0 { |
| s00gu = 0 |
| } else if s00gu > 0xffff { |
| s00gu = 0xffff |
| } |
| if s00bu < 0 { |
| s00bu = 0 |
| } else if s00bu > 0xffff { |
| s00bu = 0xffff |
| } |
| |
| s00r := float64(s00ru) |
| s00g := float64(s00gu) |
| s00b := float64(s00bu) |
| s10i := (sr.Min.Y+int(sy0)-src.Rect.Min.Y)*src.YStride + (sr.Min.X + int(sx1) - src.Rect.Min.X) |
| s10j := ((sr.Min.Y+int(sy0))/2-src.Rect.Min.Y/2)*src.CStride + (sr.Min.X + int(sx1) - src.Rect.Min.X) |
| |
| // This is an inline version of image/color/ycbcr.go's YCbCr.RGBA method. |
| s10yy1 := int(src.Y[s10i]) * 0x10101 |
| s10cb1 := int(src.Cb[s10j]) - 128 |
| s10cr1 := int(src.Cr[s10j]) - 128 |
| s10ru := (s10yy1 + 91881*s10cr1) >> 8 |
| s10gu := (s10yy1 - 22554*s10cb1 - 46802*s10cr1) >> 8 |
| s10bu := (s10yy1 + 116130*s10cb1) >> 8 |
| if s10ru < 0 { |
| s10ru = 0 |
| } else if s10ru > 0xffff { |
| s10ru = 0xffff |
| } |
| if s10gu < 0 { |
| s10gu = 0 |
| } else if s10gu > 0xffff { |
| s10gu = 0xffff |
| } |
| if s10bu < 0 { |
| s10bu = 0 |
| } else if s10bu > 0xffff { |
| s10bu = 0xffff |
| } |
| |
| s10r := float64(s10ru) |
| s10g := float64(s10gu) |
| s10b := float64(s10bu) |
| s10r = xFrac1*s00r + xFrac0*s10r |
| s10g = xFrac1*s00g + xFrac0*s10g |
| s10b = xFrac1*s00b + xFrac0*s10b |
| s01i := (sr.Min.Y+int(sy1)-src.Rect.Min.Y)*src.YStride + (sr.Min.X + int(sx0) - src.Rect.Min.X) |
| s01j := ((sr.Min.Y+int(sy1))/2-src.Rect.Min.Y/2)*src.CStride + (sr.Min.X + int(sx0) - src.Rect.Min.X) |
| |
| // This is an inline version of image/color/ycbcr.go's YCbCr.RGBA method. |
| s01yy1 := int(src.Y[s01i]) * 0x10101 |
| s01cb1 := int(src.Cb[s01j]) - 128 |
| s01cr1 := int(src.Cr[s01j]) - 128 |
| s01ru := (s01yy1 + 91881*s01cr1) >> 8 |
| s01gu := (s01yy1 - 22554*s01cb1 - 46802*s01cr1) >> 8 |
| s01bu := (s01yy1 + 116130*s01cb1) >> 8 |
| if s01ru < 0 { |
| s01ru = 0 |
| } else if s01ru > 0xffff { |
| s01ru = 0xffff |
| } |
| if s01gu < 0 { |
| s01gu = 0 |
| } else if s01gu > 0xffff { |
| s01gu = 0xffff |
| } |
| if s01bu < 0 { |
| s01bu = 0 |
| } else if s01bu > 0xffff { |
| s01bu = 0xffff |
| } |
| |
| s01r := float64(s01ru) |
| s01g := float64(s01gu) |
| s01b := float64(s01bu) |
| s11i := (sr.Min.Y+int(sy1)-src.Rect.Min.Y)*src.YStride + (sr.Min.X + int(sx1) - src.Rect.Min.X) |
| s11j := ((sr.Min.Y+int(sy1))/2-src.Rect.Min.Y/2)*src.CStride + (sr.Min.X + int(sx1) - src.Rect.Min.X) |
| |
| // This is an inline version of image/color/ycbcr.go's YCbCr.RGBA method. |
| s11yy1 := int(src.Y[s11i]) * 0x10101 |
| s11cb1 := int(src.Cb[s11j]) - 128 |
| s11cr1 := int(src.Cr[s11j]) - 128 |
| s11ru := (s11yy1 + 91881*s11cr1) >> 8 |
| s11gu := (s11yy1 - 22554*s11cb1 - 46802*s11cr1) >> 8 |
| s11bu := (s11yy1 + 116130*s11cb1) >> 8 |
| if s11ru < 0 { |
| s11ru = 0 |
| } else if s11ru > 0xffff { |
| s11ru = 0xffff |
| } |
| if s11gu < 0 { |
| s11gu = 0 |
| } else if s11gu > 0xffff { |
| s11gu = 0xffff |
| } |
| if s11bu < 0 { |
| s11bu = 0 |
| } else if s11bu > 0xffff { |
| s11bu = 0xffff |
| } |
| |
| s11r := float64(s11ru) |
| s11g := float64(s11gu) |
| s11b := float64(s11bu) |
| s11r = xFrac1*s01r + xFrac0*s11r |
| s11g = xFrac1*s01g + xFrac0*s11g |
| s11b = xFrac1*s01b + xFrac0*s11b |
| s11r = yFrac1*s10r + yFrac0*s11r |
| s11g = yFrac1*s10g + yFrac0*s11g |
| s11b = yFrac1*s10b + yFrac0*s11b |
| pr := uint32(s11r) |
| pg := uint32(s11g) |
| pb := uint32(s11b) |
| dst.Pix[d+0] = uint8(pr >> 8) |
| dst.Pix[d+1] = uint8(pg >> 8) |
| dst.Pix[d+2] = uint8(pb >> 8) |
| dst.Pix[d+3] = 0xff |
| } |
| } |
| } |
| |
| func (ablInterpolator) scale_RGBA_Image_Over(dst *image.RGBA, dr, adr image.Rectangle, src image.Image, sr image.Rectangle, opts *Options) { |
| sw := int32(sr.Dx()) |
| sh := int32(sr.Dy()) |
| yscale := float64(sh) / float64(dr.Dy()) |
| xscale := float64(sw) / float64(dr.Dx()) |
| swMinus1, shMinus1 := sw-1, sh-1 |
| |
| for dy := int32(adr.Min.Y); dy < int32(adr.Max.Y); dy++ { |
| sy := (float64(dy)+0.5)*yscale - 0.5 |
| // If sy < 0, we will clamp sy0 to 0 anyway, so it doesn't matter if |
| // we say int32(sy) instead of int32(math.Floor(sy)). Similarly for |
| // sx, below. |
| sy0 := int32(sy) |
| yFrac0 := sy - float64(sy0) |
| yFrac1 := 1 - yFrac0 |
| sy1 := sy0 + 1 |
| if sy < 0 { |
| sy0, sy1 = 0, 0 |
| yFrac0, yFrac1 = 0, 1 |
| } else if sy1 > shMinus1 { |
| sy0, sy1 = shMinus1, shMinus1 |
| yFrac0, yFrac1 = 1, 0 |
| } |
| d := (dr.Min.Y+int(dy)-dst.Rect.Min.Y)*dst.Stride + (dr.Min.X+adr.Min.X-dst.Rect.Min.X)*4 |
| |
| for dx := int32(adr.Min.X); dx < int32(adr.Max.X); dx, d = dx+1, d+4 { |
| sx := (float64(dx)+0.5)*xscale - 0.5 |
| sx0 := int32(sx) |
| xFrac0 := sx - float64(sx0) |
| xFrac1 := 1 - xFrac0 |
| sx1 := sx0 + 1 |
| if sx < 0 { |
| sx0, sx1 = 0, 0 |
| xFrac0, xFrac1 = 0, 1 |
| } else if sx1 > swMinus1 { |
| sx0, sx1 = swMinus1, swMinus1 |
| xFrac0, xFrac1 = 1, 0 |
| } |
| |
| s00ru, s00gu, s00bu, s00au := src.At(sr.Min.X+int(sx0), sr.Min.Y+int(sy0)).RGBA() |
| s00r := float64(s00ru) |
| s00g := float64(s00gu) |
| s00b := float64(s00bu) |
| s00a := float64(s00au) |
| s10ru, s10gu, s10bu, s10au := src.At(sr.Min.X+int(sx1), sr.Min.Y+int(sy0)).RGBA() |
| s10r := float64(s10ru) |
| s10g := float64(s10gu) |
| s10b := float64(s10bu) |
| s10a := float64(s10au) |
| s10r = xFrac1*s00r + xFrac0*s10r |
| s10g = xFrac1*s00g + xFrac0*s10g |
| s10b = xFrac1*s00b + xFrac0*s10b |
| s10a = xFrac1*s00a + xFrac0*s10a |
| s01ru, s01gu, s01bu, s01au := src.At(sr.Min.X+int(sx0), sr.Min.Y+int(sy1)).RGBA() |
| s01r := float64(s01ru) |
| s01g := float64(s01gu) |
| s01b := float64(s01bu) |
| s01a := float64(s01au) |
| s11ru, s11gu, s11bu, s11au := src.At(sr.Min.X+int(sx1), sr.Min.Y+int(sy1)).RGBA() |
| s11r := float64(s11ru) |
| s11g := float64(s11gu) |
| s11b := float64(s11bu) |
| s11a := float64(s11au) |
| s11r = xFrac1*s01r + xFrac0*s11r |
| s11g = xFrac1*s01g + xFrac0*s11g |
| s11b = xFrac1*s01b + xFrac0*s11b |
| s11a = xFrac1*s01a + xFrac0*s11a |
| s11r = yFrac1*s10r + yFrac0*s11r |
| s11g = yFrac1*s10g + yFrac0*s11g |
| s11b = yFrac1*s10b + yFrac0*s11b |
| s11a = yFrac1*s10a + yFrac0*s11a |
| pr := uint32(s11r) |
| pg := uint32(s11g) |
| pb := uint32(s11b) |
| pa := uint32(s11a) |
| pa1 := (0xffff - pa) * 0x101 |
| dst.Pix[d+0] = uint8((uint32(dst.Pix[d+0])*pa1/0xffff + pr) >> 8) |
| dst.Pix[d+1] = uint8((uint32(dst.Pix[d+1])*pa1/0xffff + pg) >> 8) |
| dst.Pix[d+2] = uint8((uint32(dst.Pix[d+2])*pa1/0xffff + pb) >> 8) |
| dst.Pix[d+3] = uint8((uint32(dst.Pix[d+3])*pa1/0xffff + pa) >> 8) |
| } |
| } |
| } |
| |
| func (ablInterpolator) scale_RGBA_Image_Src(dst *image.RGBA, dr, adr image.Rectangle, src image.Image, sr image.Rectangle, opts *Options) { |
| sw := int32(sr.Dx()) |
| sh := int32(sr.Dy()) |
| yscale := float64(sh) / float64(dr.Dy()) |
| xscale := float64(sw) / float64(dr.Dx()) |
| swMinus1, shMinus1 := sw-1, sh-1 |
| |
| for dy := int32(adr.Min.Y); dy < int32(adr.Max.Y); dy++ { |
| sy := (float64(dy)+0.5)*yscale - 0.5 |
| // If sy < 0, we will clamp sy0 to 0 anyway, so it doesn't matter if |
| // we say int32(sy) instead of int32(math.Floor(sy)). Similarly for |
| // sx, below. |
| sy0 := int32(sy) |
| yFrac0 := sy - float64(sy0) |
| yFrac1 := 1 - yFrac0 |
| sy1 := sy0 + 1 |
| if sy < 0 { |
| sy0, sy1 = 0, 0 |
| yFrac0, yFrac1 = 0, 1 |
| } else if sy1 > shMinus1 { |
| sy0, sy1 = shMinus1, shMinus1 |
| yFrac0, yFrac1 = 1, 0 |
| } |
| d := (dr.Min.Y+int(dy)-dst.Rect.Min.Y)*dst.Stride + (dr.Min.X+adr.Min.X-dst.Rect.Min.X)*4 |
| |
| for dx := int32(adr.Min.X); dx < int32(adr.Max.X); dx, d = dx+1, d+4 { |
| sx := (float64(dx)+0.5)*xscale - 0.5 |
| sx0 := int32(sx) |
| xFrac0 := sx - float64(sx0) |
| xFrac1 := 1 - xFrac0 |
| sx1 := sx0 + 1 |
| if sx < 0 { |
| sx0, sx1 = 0, 0 |
| xFrac0, xFrac1 = 0, 1 |
| } else if sx1 > swMinus1 { |
| sx0, sx1 = swMinus1, swMinus1 |
| xFrac0, xFrac1 = 1, 0 |
| } |
| |
| s00ru, s00gu, s00bu, s00au := src.At(sr.Min.X+int(sx0), sr.Min.Y+int(sy0)).RGBA() |
| s00r := float64(s00ru) |
| s00g := float64(s00gu) |
| s00b := float64(s00bu) |
| s00a := float64(s00au) |
| s10ru, s10gu, s10bu, s10au := src.At(sr.Min.X+int(sx1), sr.Min.Y+int(sy0)).RGBA() |
| s10r := float64(s10ru) |
| s10g := float64(s10gu) |
| s10b := float64(s10bu) |
| s10a := float64(s10au) |
| s10r = xFrac1*s00r + xFrac0*s10r |
| s10g = xFrac1*s00g + xFrac0*s10g |
| s10b = xFrac1*s00b + xFrac0*s10b |
| s10a = xFrac1*s00a + xFrac0*s10a |
| s01ru, s01gu, s01bu, s01au := src.At(sr.Min.X+int(sx0), sr.Min.Y+int(sy1)).RGBA() |
| s01r := float64(s01ru) |
| s01g := float64(s01gu) |
| s01b := float64(s01bu) |
| s01a := float64(s01au) |
| s11ru, s11gu, s11bu, s11au := src.At(sr.Min.X+int(sx1), sr.Min.Y+int(sy1)).RGBA() |
| s11r := float64(s11ru) |
| s11g := float64(s11gu) |
| s11b := float64(s11bu) |
| s11a := float64(s11au) |
| s11r = xFrac1*s01r + xFrac0*s11r |
| s11g = xFrac1*s01g + xFrac0*s11g |
| s11b = xFrac1*s01b + xFrac0*s11b |
| s11a = xFrac1*s01a + xFrac0*s11a |
| s11r = yFrac1*s10r + yFrac0*s11r |
| s11g = yFrac1*s10g + yFrac0*s11g |
| s11b = yFrac1*s10b + yFrac0*s11b |
| s11a = yFrac1*s10a + yFrac0*s11a |
| pr := uint32(s11r) |
| pg := uint32(s11g) |
| pb := uint32(s11b) |
| pa := uint32(s11a) |
| dst.Pix[d+0] = uint8(pr >> 8) |
| dst.Pix[d+1] = uint8(pg >> 8) |
| dst.Pix[d+2] = uint8(pb >> 8) |
| dst.Pix[d+3] = uint8(pa >> 8) |
| } |
| } |
| } |
| |
| func (ablInterpolator) scale_Image_Image_Over(dst Image, dr, adr image.Rectangle, src image.Image, sr image.Rectangle, opts *Options) { |
| sw := int32(sr.Dx()) |
| sh := int32(sr.Dy()) |
| yscale := float64(sh) / float64(dr.Dy()) |
| xscale := float64(sw) / float64(dr.Dx()) |
| swMinus1, shMinus1 := sw-1, sh-1 |
| srcMask, smp := opts.SrcMask, opts.SrcMaskP |
| dstMask, dmp := opts.DstMask, opts.DstMaskP |
| dstColorRGBA64 := &color.RGBA64{} |
| dstColor := color.Color(dstColorRGBA64) |
| |
| for dy := int32(adr.Min.Y); dy < int32(adr.Max.Y); dy++ { |
| sy := (float64(dy)+0.5)*yscale - 0.5 |
| // If sy < 0, we will clamp sy0 to 0 anyway, so it doesn't matter if |
| // we say int32(sy) instead of int32(math.Floor(sy)). Similarly for |
| // sx, below. |
| sy0 := int32(sy) |
| yFrac0 := sy - float64(sy0) |
| yFrac1 := 1 - yFrac0 |
| sy1 := sy0 + 1 |
| if sy < 0 { |
| sy0, sy1 = 0, 0 |
| yFrac0, yFrac1 = 0, 1 |
| } else if sy1 > shMinus1 { |
| sy0, sy1 = shMinus1, shMinus1 |
| yFrac0, yFrac1 = 1, 0 |
| } |
| |
| for dx := int32(adr.Min.X); dx < int32(adr.Max.X); dx++ { |
| sx := (float64(dx)+0.5)*xscale - 0.5 |
| sx0 := int32(sx) |
| xFrac0 := sx - float64(sx0) |
| xFrac1 := 1 - xFrac0 |
| sx1 := sx0 + 1 |
| if sx < 0 { |
| sx0, sx1 = 0, 0 |
| xFrac0, xFrac1 = 0, 1 |
| } else if sx1 > swMinus1 { |
| sx0, sx1 = swMinus1, swMinus1 |
| xFrac0, xFrac1 = 1, 0 |
| } |
| |
| s00ru, s00gu, s00bu, s00au := src.At(sr.Min.X+int(sx0), sr.Min.Y+int(sy0)).RGBA() |
| if srcMask != nil { |
| _, _, _, ma := srcMask.At(smp.X+sr.Min.X+int(sx0), smp.Y+sr.Min.Y+int(sy0)).RGBA() |
| s00ru = s00ru * ma / 0xffff |
| s00gu = s00gu * ma / 0xffff |
| s00bu = s00bu * ma / 0xffff |
| s00au = s00au * ma / 0xffff |
| } |
| s00r := float64(s00ru) |
| s00g := float64(s00gu) |
| s00b := float64(s00bu) |
| s00a := float64(s00au) |
| s10ru, s10gu, s10bu, s10au := src.At(sr.Min.X+int(sx1), sr.Min.Y+int(sy0)).RGBA() |
| if srcMask != nil { |
| _, _, _, ma := srcMask.At(smp.X+sr.Min.X+int(sx1), smp.Y+sr.Min.Y+int(sy0)).RGBA() |
| s10ru = s10ru * ma / 0xffff |
| s10gu = s10gu * ma / 0xffff |
| s10bu = s10bu * ma / 0xffff |
| s10au = s10au * ma / 0xffff |
| } |
| s10r := float64(s10ru) |
| s10g := float64(s10gu) |
| s10b := float64(s10bu) |
| s10a := float64(s10au) |
| s10r = xFrac1*s00r + xFrac0*s10r |
| s10g = xFrac1*s00g + xFrac0*s10g |
| s10b = xFrac1*s00b + xFrac0*s10b |
| s10a = xFrac1*s00a + xFrac0*s10a |
| s01ru, s01gu, s01bu, s01au := src.At(sr.Min.X+int(sx0), sr.Min.Y+int(sy1)).RGBA() |
| if srcMask != nil { |
| _, _, _, ma := srcMask.At(smp.X+sr.Min.X+int(sx0), smp.Y+sr.Min.Y+int(sy1)).RGBA() |
| s01ru = s01ru * ma / 0xffff |
| s01gu = s01gu * ma / 0xffff |
| s01bu = s01bu * ma / 0xffff |
| s01au = s01au * ma / 0xffff |
| } |
| s01r := float64(s01ru) |
| s01g := float64(s01gu) |
| s01b := float64(s01bu) |
| s01a := float64(s01au) |
| s11ru, s11gu, s11bu, s11au := src.At(sr.Min.X+int(sx1), sr.Min.Y+int(sy1)).RGBA() |
| if srcMask != nil { |
| _, _, _, ma := srcMask.At(smp.X+sr.Min.X+int(sx1), smp.Y+sr.Min.Y+int(sy1)).RGBA() |
| s11ru = s11ru * ma / 0xffff |
| s11gu = s11gu * ma / 0xffff |
| s11bu = s11bu * ma / 0xffff |
| s11au = s11au * ma / 0xffff |
| } |
| s11r := float64(s11ru) |
| s11g := float64(s11gu) |
| s11b := float64(s11bu) |
| s11a := float64(s11au) |
| s11r = xFrac1*s01r + xFrac0*s11r |
| s11g = xFrac1*s01g + xFrac0*s11g |
| s11b = xFrac1*s01b + xFrac0*s11b |
| s11a = xFrac1*s01a + xFrac0*s11a |
| s11r = yFrac1*s10r + yFrac0*s11r |
| s11g = yFrac1*s10g + yFrac0*s11g |
| s11b = yFrac1*s10b + yFrac0*s11b |
| s11a = yFrac1*s10a + yFrac0*s11a |
| pr := uint32(s11r) |
| pg := uint32(s11g) |
| pb := uint32(s11b) |
| pa := uint32(s11a) |
| qr, qg, qb, qa := dst.At(dr.Min.X+int(dx), dr.Min.Y+int(dy)).RGBA() |
| if dstMask != nil { |
| _, _, _, ma := dstMask.At(dmp.X+dr.Min.X+int(dx), dmp.Y+dr.Min.Y+int(dy)).RGBA() |
| pr = pr * ma / 0xffff |
| pg = pg * ma / 0xffff |
| pb = pb * ma / 0xffff |
| pa = pa * ma / 0xffff |
| } |
| pa1 := 0xffff - pa |
| dstColorRGBA64.R = uint16(qr*pa1/0xffff + pr) |
| dstColorRGBA64.G = uint16(qg*pa1/0xffff + pg) |
| dstColorRGBA64.B = uint16(qb*pa1/0xffff + pb) |
| dstColorRGBA64.A = uint16(qa*pa1/0xffff + pa) |
| dst.Set(dr.Min.X+int(dx), dr.Min.Y+int(dy), dstColor) |
| } |
| } |
| } |
| |
| func (ablInterpolator) scale_Image_Image_Src(dst Image, dr, adr image.Rectangle, src image.Image, sr image.Rectangle, opts *Options) { |
| sw := int32(sr.Dx()) |
| sh := int32(sr.Dy()) |
| yscale := float64(sh) / float64(dr.Dy()) |
| xscale := float64(sw) / float64(dr.Dx()) |
| swMinus1, shMinus1 := sw-1, sh-1 |
| srcMask, smp := opts.SrcMask, opts.SrcMaskP |
| dstMask, dmp := opts.DstMask, opts.DstMaskP |
| dstColorRGBA64 := &color.RGBA64{} |
| dstColor := color.Color(dstColorRGBA64) |
| |
| for dy := int32(adr.Min.Y); dy < int32(adr.Max.Y); dy++ { |
| sy := (float64(dy)+0.5)*yscale - 0.5 |
| // If sy < 0, we will clamp sy0 to 0 anyway, so it doesn't matter if |
| // we say int32(sy) instead of int32(math.Floor(sy)). Similarly for |
| // sx, below. |
| sy0 := int32(sy) |
| yFrac0 := sy - float64(sy0) |
| yFrac1 := 1 - yFrac0 |
| sy1 := sy0 + 1 |
| if sy < 0 { |
| sy0, sy1 = 0, 0 |
| yFrac0, yFrac1 = 0, 1 |
| } else if sy1 > shMinus1 { |
| sy0, sy1 = shMinus1, shMinus1 |
| yFrac0, yFrac1 = 1, 0 |
| } |
| |
| for dx := int32(adr.Min.X); dx < int32(adr.Max.X); dx++ { |
| sx := (float64(dx)+0.5)*xscale - 0.5 |
| sx0 := int32(sx) |
| xFrac0 := sx - float64(sx0) |
| xFrac1 := 1 - xFrac0 |
| sx1 := sx0 + 1 |
| if sx < 0 { |
| sx0, sx1 = 0, 0 |
| xFrac0, xFrac1 = 0, 1 |
| } else if sx1 > swMinus1 { |
| sx0, sx1 = swMinus1, swMinus1 |
| xFrac0, xFrac1 = 1, 0 |
| } |
| |
| s00ru, s00gu, s00bu, s00au := src.At(sr.Min.X+int(sx0), sr.Min.Y+int(sy0)).RGBA() |
| if srcMask != nil { |
| _, _, _, ma := srcMask.At(smp.X+sr.Min.X+int(sx0), smp.Y+sr.Min.Y+int(sy0)).RGBA() |
| s00ru = s00ru * ma / 0xffff |
| s00gu = s00gu * ma / 0xffff |
| s00bu = s00bu * ma / 0xffff |
| s00au = s00au * ma / 0xffff |
| } |
| s00r := float64(s00ru) |
| s00g := float64(s00gu) |
| s00b := float64(s00bu) |
| s00a := float64(s00au) |
| s10ru, s10gu, s10bu, s10au := src.At(sr.Min.X+int(sx1), sr.Min.Y+int(sy0)).RGBA() |
| if srcMask != nil { |
| _, _, _, ma := srcMask.At(smp.X+sr.Min.X+int(sx1), smp.Y+sr.Min.Y+int(sy0)).RGBA() |
| s10ru = s10ru * ma / 0xffff |
| s10gu = s10gu * ma / 0xffff |
| s10bu = s10bu * ma / 0xffff |
| s10au = s10au * ma / 0xffff |
| } |
| s10r := float64(s10ru) |
| s10g := float64(s10gu) |
| s10b := float64(s10bu) |
| s10a := float64(s10au) |
| s10r = xFrac1*s00r + xFrac0*s10r |
| s10g = xFrac1*s00g + xFrac0*s10g |
| s10b = xFrac1*s00b + xFrac0*s10b |
| s10a = xFrac1*s00a + xFrac0*s10a |
| s01ru, s01gu, s01bu, s01au := src.At(sr.Min.X+int(sx0), sr.Min.Y+int(sy1)).RGBA() |
| if srcMask != nil { |
| _, _, _, ma := srcMask.At(smp.X+sr.Min.X+int(sx0), smp.Y+sr.Min.Y+int(sy1)).RGBA() |
| s01ru = s01ru * ma / 0xffff |
| s01gu = s01gu * ma / 0xffff |
| s01bu = s01bu * ma / 0xffff |
| s01au = s01au * ma / 0xffff |
| } |
| s01r := float64(s01ru) |
| s01g := float64(s01gu) |
| s01b := float64(s01bu) |
| s01a := float64(s01au) |
| s11ru, s11gu, s11bu, s11au := src.At(sr.Min.X+int(sx1), sr.Min.Y+int(sy1)).RGBA() |
| if srcMask != nil { |
| _, _, _, ma := srcMask.At(smp.X+sr.Min.X+int(sx1), smp.Y+sr.Min.Y+int(sy1)).RGBA() |
| s11ru = s11ru * ma / 0xffff |
| s11gu = s11gu * ma / 0xffff |
| s11bu = s11bu * ma / 0xffff |
| s11au = s11au * ma / 0xffff |
| } |
| s11r := float64(s11ru) |
| s11g := float64(s11gu) |
| s11b := float64(s11bu) |
| s11a := float64(s11au) |
| s11r = xFrac1*s01r + xFrac0*s11r |
| s11g = xFrac1*s01g + xFrac0*s11g |
| s11b = xFrac1*s01b + xFrac0*s11b |
| s11a = xFrac1*s01a + xFrac0*s11a |
| s11r = yFrac1*s10r + yFrac0*s11r |
| s11g = yFrac1*s10g + yFrac0*s11g |
| s11b = yFrac1*s10b + yFrac0*s11b |
| s11a = yFrac1*s10a + yFrac0*s11a |
| pr := uint32(s11r) |
| pg := uint32(s11g) |
| pb := uint32(s11b) |
| pa := uint32(s11a) |
| if dstMask != nil { |
| qr, qg, qb, qa := dst.At(dr.Min.X+int(dx), dr.Min.Y+int(dy)).RGBA() |
| _, _, _, ma := dstMask.At(dmp.X+dr.Min.X+int(dx), dmp.Y+dr.Min.Y+int(dy)).RGBA() |
| pr = pr * ma / 0xffff |
| pg = pg * ma / 0xffff |
| pb = pb * ma / 0xffff |
| pa = pa * ma / 0xffff |
| pa1 := 0xffff - ma |
| dstColorRGBA64.R = uint16(qr*pa1/0xffff + pr) |
| dstColorRGBA64.G = uint16(qg*pa1/0xffff + pg) |
| dstColorRGBA64.B = uint16(qb*pa1/0xffff + pb) |
| dstColorRGBA64.A = uint16(qa*pa1/0xffff + pa) |
| dst.Set(dr.Min.X+int(dx), dr.Min.Y+int(dy), dstColor) |
| } else { |
| dstColorRGBA64.R = uint16(pr) |
| dstColorRGBA64.G = uint16(pg) |
| dstColorRGBA64.B = uint16(pb) |
| dstColorRGBA64.A = uint16(pa) |
| dst.Set(dr.Min.X+int(dx), dr.Min.Y+int(dy), dstColor) |
| } |
| } |
| } |
| } |
| |
| func (ablInterpolator) transform_RGBA_Gray_Src(dst *image.RGBA, dr, adr image.Rectangle, d2s *f64.Aff3, src *image.Gray, sr image.Rectangle, bias image.Point, opts *Options) { |
| for dy := int32(adr.Min.Y); dy < int32(adr.Max.Y); dy++ { |
| dyf := float64(dr.Min.Y+int(dy)) + 0.5 |
| d := (dr.Min.Y+int(dy)-dst.Rect.Min.Y)*dst.Stride + (dr.Min.X+adr.Min.X-dst.Rect.Min.X)*4 |
| for dx := int32(adr.Min.X); dx < int32(adr.Max.X); dx, d = dx+1, d+4 { |
| dxf := float64(dr.Min.X+int(dx)) + 0.5 |
| sx := d2s[0]*dxf + d2s[1]*dyf + d2s[2] |
| sy := d2s[3]*dxf + d2s[4]*dyf + d2s[5] |
| if !(image.Point{int(sx) + bias.X, int(sy) + bias.Y}).In(sr) { |
| continue |
| } |
| |
| sx -= 0.5 |
| sx0 := int(sx) |
| xFrac0 := sx - float64(sx0) |
| xFrac1 := 1 - xFrac0 |
| sx0 += bias.X |
| sx1 := sx0 + 1 |
| if sx0 < sr.Min.X { |
| sx0, sx1 = sr.Min.X, sr.Min.X |
| xFrac0, xFrac1 = 0, 1 |
| } else if sx1 >= sr.Max.X { |
| sx0, sx1 = sr.Max.X-1, sr.Max.X-1 |
| xFrac0, xFrac1 = 1, 0 |
| } |
| |
| sy -= 0.5 |
| sy0 := int(sy) |
| yFrac0 := sy - float64(sy0) |
| yFrac1 := 1 - yFrac0 |
| sy0 += bias.Y |
| sy1 := sy0 + 1 |
| if sy0 < sr.Min.Y { |
| sy0, sy1 = sr.Min.Y, sr.Min.Y |
| yFrac0, yFrac1 = 0, 1 |
| } else if sy1 >= sr.Max.Y { |
| sy0, sy1 = sr.Max.Y-1, sr.Max.Y-1 |
| yFrac0, yFrac1 = 1, 0 |
| } |
| |
| s00i := (sy0-src.Rect.Min.Y)*src.Stride + (sx0 - src.Rect.Min.X) |
| s00ru := uint32(src.Pix[s00i]) * 0x101 |
| s00r := float64(s00ru) |
| s10i := (sy0-src.Rect.Min.Y)*src.Stride + (sx1 - src.Rect.Min.X) |
| s10ru := uint32(src.Pix[s10i]) * 0x101 |
| s10r := float64(s10ru) |
| s10r = xFrac1*s00r + xFrac0*s10r |
| s01i := (sy1-src.Rect.Min.Y)*src.Stride + (sx0 - src.Rect.Min.X) |
| s01ru := uint32(src.Pix[s01i]) * 0x101 |
| s01r := float64(s01ru) |
| s11i := (sy1-src.Rect.Min.Y)*src.Stride + (sx1 - src.Rect.Min.X) |
| s11ru := uint32(src.Pix[s11i]) * 0x101 |
| s11r := float64(s11ru) |
| s11r = xFrac1*s01r + xFrac0*s11r |
| s11r = yFrac1*s10r + yFrac0*s11r |
| pr := uint32(s11r) |
| out := uint8(pr >> 8) |
| dst.Pix[d+0] = out |
| dst.Pix[d+1] = out |
| dst.Pix[d+2] = out |
| dst.Pix[d+3] = 0xff |
| } |
| } |
| } |
| |
| func (ablInterpolator) transform_RGBA_NRGBA_Over(dst *image.RGBA, dr, adr image.Rectangle, d2s *f64.Aff3, src *image.NRGBA, sr image.Rectangle, bias image.Point, opts *Options) { |
| for dy := int32(adr.Min.Y); dy < int32(adr.Max.Y); dy++ { |
| dyf := float64(dr.Min.Y+int(dy)) + 0.5 |
| d := (dr.Min.Y+int(dy)-dst.Rect.Min.Y)*dst.Stride + (dr.Min.X+adr.Min.X-dst.Rect.Min.X)*4 |
| for dx := int32(adr.Min.X); dx < int32(adr.Max.X); dx, d = dx+1, d+4 { |
| dxf := float64(dr.Min.X+int(dx)) + 0.5 |
| sx := d2s[0]*dxf + d2s[1]*dyf + d2s[2] |
| sy := d2s[3]*dxf + d2s[4]*dyf + d2s[5] |
| if !(image.Point{int(sx) + bias.X, int(sy) + bias.Y}).In(sr) { |
| continue |
| } |
| |
| sx -= 0.5 |
| sx0 := int(sx) |
| xFrac0 := sx - float64(sx0) |
| xFrac1 := 1 - xFrac0 |
| sx0 += bias.X |
| sx1 := sx0 + 1 |
| if sx0 < sr.Min.X { |
| sx0, sx1 = sr.Min.X, sr.Min.X |
| xFrac0, xFrac1 = 0, 1 |
| } else if sx1 >= sr.Max.X { |
| sx0, sx1 = sr.Max.X-1, sr.Max.X-1 |
| xFrac0, xFrac1 = 1, 0 |
| } |
| |
| sy -= 0.5 |
| sy0 := int(sy) |
| yFrac0 := sy - float64(sy0) |
| yFrac1 := 1 - yFrac0 |
| sy0 += bias.Y |
| sy1 := sy0 + 1 |
| if sy0 < sr.Min.Y { |
| sy0, sy1 = sr.Min.Y, sr.Min.Y |
| yFrac0, yFrac1 = 0, 1 |
| } else if sy1 >= sr.Max.Y { |
| sy0, sy1 = sr.Max.Y-1, sr.Max.Y-1 |
| yFrac0, yFrac1 = 1, 0 |
| } |
| |
| s00i := (sy0-src.Rect.Min.Y)*src.Stride + (sx0-src.Rect.Min.X)*4 |
| s00au := uint32(src.Pix[s00i+3]) * 0x101 |
| s00ru := uint32(src.Pix[s00i+0]) * s00au / 0xff |
| s00gu := uint32(src.Pix[s00i+1]) * s00au / 0xff |
| s00bu := uint32(src.Pix[s00i+2]) * s00au / 0xff |
| s00r := float64(s00ru) |
| s00g := float64(s00gu) |
| s00b := float64(s00bu) |
| s00a := float64(s00au) |
| s10i := (sy0-src.Rect.Min.Y)*src.Stride + (sx1-src.Rect.Min.X)*4 |
| s10au := uint32(src.Pix[s10i+3]) * 0x101 |
| s10ru := uint32(src.Pix[s10i+0]) * s10au / 0xff |
| s10gu := uint32(src.Pix[s10i+1]) * s10au / 0xff |
| s10bu := uint32(src.Pix[s10i+2]) * s10au / 0xff |
| s10r := float64(s10ru) |
| s10g := float64(s10gu) |
| s10b := float64(s10bu) |
| s10a := float64(s10au) |
| s10r = xFrac1*s00r + xFrac0*s10r |
| s10g = xFrac1*s00g + xFrac0*s10g |
| s10b = xFrac1*s00b + xFrac0*s10b |
| s10a = xFrac1*s00a + xFrac0*s10a |
| s01i := (sy1-src.Rect.Min.Y)*src.Stride + (sx0-src.Rect.Min.X)*4 |
| s01au := uint32(src.Pix[s01i+3]) * 0x101 |
| s01ru := uint32(src.Pix[s01i+0]) * s01au / 0xff |
| s01gu := uint32(src.Pix[s01i+1]) * s01au / 0xff |
| s01bu := uint32(src.Pix[s01i+2]) * s01au / 0xff |
| s01r := float64(s01ru) |
| s01g := float64(s01gu) |
| s01b := float64(s01bu) |
| s01a := float64(s01au) |
| s11i := (sy1-src.Rect.Min.Y)*src.Stride + (sx1-src.Rect.Min.X)*4 |
| s11au := uint32(src.Pix[s11i+3]) * 0x101 |
| s11ru := uint32(src.Pix[s11i+0]) * s11au / 0xff |
| s11gu := uint32(src.Pix[s11i+1]) * s11au / 0xff |
| s11bu := uint32(src.Pix[s11i+2]) * s11au / 0xff |
| s11r := float64(s11ru) |
| s11g := float64(s11gu) |
| s11b := float64(s11bu) |
| s11a := float64(s11au) |
| s11r = xFrac1*s01r + xFrac0*s11r |
| s11g = xFrac1*s01g + xFrac0*s11g |
| s11b = xFrac1*s01b + xFrac0*s11b |
| s11a = xFrac1*s01a + xFrac0*s11a |
| s11r = yFrac1*s10r + yFrac0*s11r |
| s11g = yFrac1*s10g + yFrac0*s11g |
| s11b = yFrac1*s10b + yFrac0*s11b |
| s11a = yFrac1*s10a + yFrac0*s11a |
| pr := uint32(s11r) |
| pg := uint32(s11g) |
| pb := uint32(s11b) |
| pa := uint32(s11a) |
| pa1 := (0xffff - pa) * 0x101 |
| dst.Pix[d+0] = uint8((uint32(dst.Pix[d+0])*pa1/0xffff + pr) >> 8) |
| dst.Pix[d+1] = uint8((uint32(dst.Pix[d+1])*pa1/0xffff + pg) >> 8) |
| dst.Pix[d+2] = uint8((uint32(dst.Pix[d+2])*pa1/0xffff + pb) >> 8) |
| dst.Pix[d+3] = uint8((uint32(dst.Pix[d+3])*pa1/0xffff + pa) >> 8) |
| } |
| } |
| } |
| |
| func (ablInterpolator) transform_RGBA_NRGBA_Src(dst *image.RGBA, dr, adr image.Rectangle, d2s *f64.Aff3, src *image.NRGBA, sr image.Rectangle, bias image.Point, opts *Options) { |
| for dy := int32(adr.Min.Y); dy < int32(adr.Max.Y); dy++ { |
| dyf := float64(dr.Min.Y+int(dy)) + 0.5 |
| d := (dr.Min.Y+int(dy)-dst.Rect.Min.Y)*dst.Stride + (dr.Min.X+adr.Min.X-dst.Rect.Min.X)*4 |
| for dx := int32(adr.Min.X); dx < int32(adr.Max.X); dx, d = dx+1, d+4 { |
| dxf := float64(dr.Min.X+int(dx)) + 0.5 |
| sx := d2s[0]*dxf + d2s[1]*dyf + d2s[2] |
| sy := d2s[3]*dxf + d2s[4]*dyf + d2s[5] |
| if !(image.Point{int(sx) + bias.X, int(sy) + bias.Y}).In(sr) { |
| continue |
| } |
| |
| sx -= 0.5 |
| sx0 := int(sx) |
| xFrac0 := sx - float64(sx0) |
| xFrac1 := 1 - xFrac0 |
| sx0 += bias.X |
| sx1 := sx0 + 1 |
| if sx0 < sr.Min.X { |
| sx0, sx1 = sr.Min.X, sr.Min.X |
| xFrac0, xFrac1 = 0, 1 |
| } else if sx1 >= sr.Max.X { |
| sx0, sx1 = sr.Max.X-1, sr.Max.X-1 |
| xFrac0, xFrac1 = 1, 0 |
| } |
| |
| sy -= 0.5 |
| sy0 := int(sy) |
| yFrac0 := sy - float64(sy0) |
| yFrac1 := 1 - yFrac0 |
| sy0 += bias.Y |
| sy1 := sy0 + 1 |
| if sy0 < sr.Min.Y { |
| sy0, sy1 = sr.Min.Y, sr.Min.Y |
| yFrac0, yFrac1 = 0, 1 |
| } else if sy1 >= sr.Max.Y { |
| sy0, sy1 = sr.Max.Y-1, sr.Max.Y-1 |
| yFrac0, yFrac1 = 1, 0 |
| } |
| |
| s00i := (sy0-src.Rect.Min.Y)*src.Stride + (sx0-src.Rect.Min.X)*4 |
| s00au := uint32(src.Pix[s00i+3]) * 0x101 |
| s00ru := uint32(src.Pix[s00i+0]) * s00au / 0xff |
| s00gu := uint32(src.Pix[s00i+1]) * s00au / 0xff |
| s00bu := uint32(src.Pix[s00i+2]) * s00au / 0xff |
| s00r := float64(s00ru) |
| s00g := float64(s00gu) |
| s00b := float64(s00bu) |
| s00a := float64(s00au) |
| s10i := (sy0-src.Rect.Min.Y)*src.Stride + (sx1-src.Rect.Min.X)*4 |
| s10au := uint32(src.Pix[s10i+3]) * 0x101 |
| s10ru := uint32(src.Pix[s10i+0]) * s10au / 0xff |
| s10gu := uint32(src.Pix[s10i+1]) * s10au / 0xff |
| s10bu := uint32(src.Pix[s10i+2]) * s10au / 0xff |
| s10r := float64(s10ru) |
| s10g := float64(s10gu) |
| s10b := float64(s10bu) |
| s10a := float64(s10au) |
| s10r = xFrac1*s00r + xFrac0*s10r |
| s10g = xFrac1*s00g + xFrac0*s10g |
| s10b = xFrac1*s00b + xFrac0*s10b |
| s10a = xFrac1*s00a + xFrac0*s10a |
| s01i := (sy1-src.Rect.Min.Y)*src.Stride + (sx0-src.Rect.Min.X)*4 |
| s01au := uint32(src.Pix[s01i+3]) * 0x101 |
| s01ru := uint32(src.Pix[s01i+0]) * s01au / 0xff |
| s01gu := uint32(src.Pix[s01i+1]) * s01au / 0xff |
| s01bu := uint32(src.Pix[s01i+2]) * s01au / 0xff |
| s01r := float64(s01ru) |
| s01g := float64(s01gu) |
| s01b := float64(s01bu) |
| s01a := float64(s01au) |
| s11i := (sy1-src.Rect.Min.Y)*src.Stride + (sx1-src.Rect.Min.X)*4 |
| s11au := uint32(src.Pix[s11i+3]) * 0x101 |
| s11ru := uint32(src.Pix[s11i+0]) * s11au / 0xff |
| s11gu := uint32(src.Pix[s11i+1]) * s11au / 0xff |
| s11bu := uint32(src.Pix[s11i+2]) * s11au / 0xff |
| s11r := float64(s11ru) |
| s11g := float64(s11gu) |
| s11b := float64(s11bu) |
| s11a := float64(s11au) |
| s11r = xFrac1*s01r + xFrac0*s11r |
| s11g = xFrac1*s01g + xFrac0*s11g |
| s11b = xFrac1*s01b + xFrac0*s11b |
| s11a = xFrac1*s01a + xFrac0*s11a |
| s11r = yFrac1*s10r + yFrac0*s11r |
| s11g = yFrac1*s10g + yFrac0*s11g |
| s11b = yFrac1*s10b + yFrac0*s11b |
| s11a = yFrac1*s10a + yFrac0*s11a |
| pr := uint32(s11r) |
| pg := uint32(s11g) |
| pb := uint32(s11b) |
| pa := uint32(s11a) |
| dst.Pix[d+0] = uint8(pr >> 8) |
| dst.Pix[d+1] = uint8(pg >> 8) |
| dst.Pix[d+2] = uint8(pb >> 8) |
| dst.Pix[d+3] = uint8(pa >> 8) |
| } |
| } |
| } |
| |
| func (ablInterpolator) transform_RGBA_RGBA_Over(dst *image.RGBA, dr, adr image.Rectangle, d2s *f64.Aff3, src *image.RGBA, sr image.Rectangle, bias image.Point, opts *Options) { |
| for dy := int32(adr.Min.Y); dy < int32(adr.Max.Y); dy++ { |
| dyf := float64(dr.Min.Y+int(dy)) + 0.5 |
| d := (dr.Min.Y+int(dy)-dst.Rect.Min.Y)*dst.Stride + (dr.Min.X+adr.Min.X-dst.Rect.Min.X)*4 |
| for dx := int32(adr.Min.X); dx < int32(adr.Max.X); dx, d = dx+1, d+4 { |
| dxf := float64(dr.Min.X+int(dx)) + 0.5 |
| sx := d2s[0]*dxf + d2s[1]*dyf + d2s[2] |
| sy := d2s[3]*dxf + d2s[4]*dyf + d2s[5] |
| if !(image.Point{int(sx) + bias.X, int(sy) + bias.Y}).In(sr) { |
| continue |
| } |
| |
| sx -= 0.5 |
| sx0 := int(sx) |
| xFrac0 := sx - float64(sx0) |
| xFrac1 := 1 - xFrac0 |
| sx0 += bias.X |
| sx1 := sx0 + 1 |
| if sx0 < sr.Min.X { |
| sx0, sx1 = sr.Min.X, sr.Min.X |
| xFrac0, xFrac1 = 0, 1 |
| } else if sx1 >= sr.Max.X { |
| sx0, sx1 = sr.Max.X-1, sr.Max.X-1 |
| xFrac0, xFrac1 = 1, 0 |
| } |
| |
| sy -= 0.5 |
| sy0 := int(sy) |
| yFrac0 := sy - float64(sy0) |
| yFrac1 := 1 - yFrac0 |
| sy0 += bias.Y |
| sy1 := sy0 + 1 |
| if sy0 < sr.Min.Y { |
| sy0, sy1 = sr.Min.Y, sr.Min.Y |
| yFrac0, yFrac1 = 0, 1 |
| } else if sy1 >= sr.Max.Y { |
| sy0, sy1 = sr.Max.Y-1, sr.Max.Y-1 |
| yFrac0, yFrac1 = 1, 0 |
| } |
| |
| s00i := (sy0-src.Rect.Min.Y)*src.Stride + (sx0-src.Rect.Min.X)*4 |
| s00ru := uint32(src.Pix[s00i+0]) * 0x101 |
| s00gu := uint32(src.Pix[s00i+1]) * 0x101 |
| s00bu := uint32(src.Pix[s00i+2]) * 0x101 |
| s00au := uint32(src.Pix[s00i+3]) * 0x101 |
| s00r := float64(s00ru) |
| s00g := float64(s00gu) |
| s00b := float64(s00bu) |
| s00a := float64(s00au) |
| s10i := (sy0-src.Rect.Min.Y)*src.Stride + (sx1-src.Rect.Min.X)*4 |
| s10ru := uint32(src.Pix[s10i+0]) * 0x101 |
| s10gu := uint32(src.Pix[s10i+1]) * 0x101 |
| s10bu := uint32(src.Pix[s10i+2]) * 0x101 |
| s10au := uint32(src.Pix[s10i+3]) * 0x101 |
| s10r := float64(s10ru) |
| s10g := float64(s10gu) |
| s10b := float64(s10bu) |
| s10a := float64(s10au) |
| s10r = xFrac1*s00r + xFrac0*s10r |
| s10g = xFrac1*s00g + xFrac0*s10g |
| s10b = xFrac1*s00b + xFrac0*s10b |
| s10a = xFrac1*s00a + xFrac0*s10a |
| s01i := (sy1-src.Rect.Min.Y)*src.Stride + (sx0-src.Rect.Min.X)*4 |
| s01ru := uint32(src.Pix[s01i+0]) * 0x101 |
| s01gu := uint32(src.Pix[s01i+1]) * 0x101 |
| s01bu := uint32(src.Pix[s01i+2]) * 0x101 |
| s01au := uint32(src.Pix[s01i+3]) * 0x101 |
| s01r := float64(s01ru) |
| s01g := float64(s01gu) |
| s01b := float64(s01bu) |
| s01a := float64(s01au) |
| s11i := (sy1-src.Rect.Min.Y)*src.Stride + (sx1-src.Rect.Min.X)*4 |
| s11ru := uint32(src.Pix[s11i+0]) * 0x101 |
| s11gu := uint32(src.Pix[s11i+1]) * 0x101 |
| s11bu := uint32(src.Pix[s11i+2]) * 0x101 |
| s11au := uint32(src.Pix[s11i+3]) * 0x101 |
| s11r := float64(s11ru) |
| s11g := float64(s11gu) |
| s11b := float64(s11bu) |
| s11a := float64(s11au) |
| s11r = xFrac1*s01r + xFrac0*s11r |
| s11g = xFrac1*s01g + xFrac0*s11g |
| s11b = xFrac1*s01b + xFrac0*s11b |
| s11a = xFrac1*s01a + xFrac0*s11a |
| s11r = yFrac1*s10r + yFrac0*s11r |
| s11g = yFrac1*s10g + yFrac0*s11g |
| s11b = yFrac1*s10b + yFrac0*s11b |
| s11a = yFrac1*s10a + yFrac0*s11a |
| pr := uint32(s11r) |
| pg := uint32(s11g) |
| pb := uint32(s11b) |
| pa := uint32(s11a) |
| pa1 := (0xffff - pa) * 0x101 |
| dst.Pix[d+0] = uint8((uint32(dst.Pix[d+0])*pa1/0xffff + pr) >> 8) |
| dst.Pix[d+1] = uint8((uint32(dst.Pix[d+1])*pa1/0xffff + pg) >> 8) |
| dst.Pix[d+2] = uint8((uint32(dst.Pix[d+2])*pa1/0xffff + pb) >> 8) |
| dst.Pix[d+3] = uint8((uint32(dst.Pix[d+3])*pa1/0xffff + pa) >> 8) |
| } |
| } |
| } |
| |
| func (ablInterpolator) transform_RGBA_RGBA_Src(dst *image.RGBA, dr, adr image.Rectangle, d2s *f64.Aff3, src *image.RGBA, sr image.Rectangle, bias image.Point, opts *Options) { |
| for dy := int32(adr.Min.Y); dy < int32(adr.Max.Y); dy++ { |
| dyf := float64(dr.Min.Y+int(dy)) + 0.5 |
| d := (dr.Min.Y+int(dy)-dst.Rect.Min.Y)*dst.Stride + (dr.Min.X+adr.Min.X-dst.Rect.Min.X)*4 |
| for dx := int32(adr.Min.X); dx < int32(adr.Max.X); dx, d = dx+1, d+4 { |
| dxf := float64(dr.Min.X+int(dx)) + 0.5 |
| sx := d2s[0]*dxf + d2s[1]*dyf + d2s[2] |
| sy := d2s[3]*dxf + d2s[4]*dyf + d2s[5] |
| if !(image.Point{int(sx) + bias.X, int(sy) + bias.Y}).In(sr) { |
| continue |
| } |
| |
| sx -= 0.5 |
| sx0 := int(sx) |
| xFrac0 := sx - float64(sx0) |
| xFrac1 := 1 - xFrac0 |
| sx0 += bias.X |
| sx1 := sx0 + 1 |
| if sx0 < sr.Min.X { |
| sx0, sx1 = sr.Min.X, sr.Min.X |
| xFrac0, xFrac1 = 0, 1 |
| } else if sx1 >= sr.Max.X { |
| sx0, sx1 = sr.Max.X-1, sr.Max.X-1 |
| xFrac0, xFrac1 = 1, 0 |
| } |
| |
| sy -= 0.5 |
| sy0 := int(sy) |
| yFrac0 := sy - float64(sy0) |
| yFrac1 := 1 - yFrac0 |
| sy0 += bias.Y |
| sy1 := sy0 + 1 |
| if sy0 < sr.Min.Y { |
| sy0, sy1 = sr.Min.Y, sr.Min.Y |
| yFrac0, yFrac1 = 0, 1 |
| } else if sy1 >= sr.Max.Y { |
| sy0, sy1 = sr.Max.Y-1, sr.Max.Y-1 |
| yFrac0, yFrac1 = 1, 0 |
| } |
| |
| s00i := (sy0-src.Rect.Min.Y)*src.Stride + (sx0-src.Rect.Min.X)*4 |
| s00ru := uint32(src.Pix[s00i+0]) * 0x101 |
| s00gu := uint32(src.Pix[s00i+1]) * 0x101 |
| s00bu := uint32(src.Pix[s00i+2]) * 0x101 |
| s00au := uint32(src.Pix[s00i+3]) * 0x101 |
| s00r := float64(s00ru) |
| s00g := float64(s00gu) |
| s00b := float64(s00bu) |
| s00a := float64(s00au) |
| s10i := (sy0-src.Rect.Min.Y)*src.Stride + (sx1-src.Rect.Min.X)*4 |
| s10ru := uint32(src.Pix[s10i+0]) * 0x101 |
| s10gu := uint32(src.Pix[s10i+1]) * 0x101 |
| s10bu := uint32(src.Pix[s10i+2]) * 0x101 |
| s10au := uint32(src.Pix[s10i+3]) * 0x101 |
| s10r := float64(s10ru) |
| s10g := float64(s10gu) |
| s10b := float64(s10bu) |
| s10a := float64(s10au) |
| s10r = xFrac1*s00r + xFrac0*s10r |
| s10g = xFrac1*s00g + xFrac0*s10g |
| s10b = xFrac1*s00b + xFrac0*s10b |
| s10a = xFrac1*s00a + xFrac0*s10a |
| s01i := (sy1-src.Rect.Min.Y)*src.Stride + (sx0-src.Rect.Min.X)*4 |
| s01ru := uint32(src.Pix[s01i+0]) * 0x101 |
| s01gu := uint32(src.Pix[s01i+1]) * 0x101 |
| s01bu := uint32(src.Pix[s01i+2]) * 0x101 |
| s01au := uint32(src.Pix[s01i+3]) * 0x101 |
| s01r := float64(s01ru) |
| s01g := float64(s01gu) |
| s01b := float64(s01bu) |
| s01a := float64(s01au) |
| s11i := (sy1-src.Rect.Min.Y)*src.Stride + (sx1-src.Rect.Min.X)*4 |
| s11ru := uint32(src.Pix[s11i+0]) * 0x101 |
| s11gu := uint32(src.Pix[s11i+1]) * 0x101 |
| s11bu := uint32(src.Pix[s11i+2]) * 0x101 |
| s11au := uint32(src.Pix[s11i+3]) * 0x101 |
| s11r := float64(s11ru) |
| s11g := float64(s11gu) |
| s11b := float64(s11bu) |
| s11a := float64(s11au) |
| s11r = xFrac1*s01r + xFrac0*s11r |
| s11g = xFrac1*s01g + xFrac0*s11g |
| s11b = xFrac1*s01b + xFrac0*s11b |
| s11a = xFrac1*s01a + xFrac0*s11a |
| s11r = yFrac1*s10r + yFrac0*s11r |
| s11g = yFrac1*s10g + yFrac0*s11g |
| s11b = yFrac1*s10b + yFrac0*s11b |
| s11a = yFrac1*s10a + yFrac0*s11a |
| pr := uint32(s11r) |
| pg := uint32(s11g) |
| pb := uint32(s11b) |
| pa := uint32(s11a) |
| dst.Pix[d+0] = uint8(pr >> 8) |
| dst.Pix[d+1] = uint8(pg >> 8) |
| dst.Pix[d+2] = uint8(pb >> 8) |
| dst.Pix[d+3] = uint8(pa >> 8) |
| } |
| } |
| } |
| |
| func (ablInterpolator) transform_RGBA_YCbCr444_Src(dst *image.RGBA, dr, adr image.Rectangle, d2s *f64.Aff3, src *image.YCbCr, sr image.Rectangle, bias image.Point, opts *Options) { |
| for dy := int32(adr.Min.Y); dy < int32(adr.Max.Y); dy++ { |
| dyf := float64(dr.Min.Y+int(dy)) + 0.5 |
| d := (dr.Min.Y+int(dy)-dst.Rect.Min.Y)*dst.Stride + (dr.Min.X+adr.Min.X-dst.Rect.Min.X)*4 |
| for dx := int32(adr.Min.X); dx < int32(adr.Max.X); dx, d = dx+1, d+4 { |
| dxf := float64(dr.Min.X+int(dx)) + 0.5 |
| sx := d2s[0]*dxf + d2s[1]*dyf + d2s[2] |
| sy := d2s[3]*dxf + d2s[4]*dyf + d2s[5] |
| if !(image.Point{int(sx) + bias.X, int(sy) + bias.Y}).In(sr) { |
| continue |
| } |
| |
| sx -= 0.5 |
| sx0 := int(sx) |
| xFrac0 := sx - float64(sx0) |
| xFrac1 := 1 - xFrac0 |
| sx0 += bias.X |
| sx1 := sx0 + 1 |
| if sx0 < sr.Min.X { |
| sx0, sx1 = sr.Min.X, sr.Min.X |
| xFrac0, xFrac1 = 0, 1 |
| } else if sx1 >= sr.Max.X { |
| sx0, sx1 = sr.Max.X-1, sr.Max.X-1 |
| xFrac0, xFrac1 = 1, 0 |
| } |
| |
| sy -= 0.5 |
| sy0 := int(sy) |
| yFrac0 := sy - float64(sy0) |
| yFrac1 := 1 - yFrac0 |
| sy0 += bias.Y |
| sy1 := sy0 + 1 |
| if sy0 < sr.Min.Y { |
| sy0, sy1 = sr.Min.Y, sr.Min.Y |
| yFrac0, yFrac1 = 0, 1 |
| } else if sy1 >= sr.Max.Y { |
| sy0, sy1 = sr.Max.Y-1, sr.Max.Y-1 |
| yFrac0, yFrac1 = 1, 0 |
| } |
| |
| s00i := (sy0-src.Rect.Min.Y)*src.YStride + (sx0 - src.Rect.Min.X) |
| s00j := (sy0-src.Rect.Min.Y)*src.CStride + (sx0 - src.Rect.Min.X) |
| |
| // This is an inline version of image/color/ycbcr.go's YCbCr.RGBA method. |
| s00yy1 := int(src.Y[s00i]) * 0x10101 |
| s00cb1 := int(src.Cb[s00j]) - 128 |
| s00cr1 := int(src.Cr[s00j]) - 128 |
| s00ru := (s00yy1 + 91881*s00cr1) >> 8 |
| s00gu := (s00yy1 - 22554*s00cb1 - 46802*s00cr1) >> 8 |
| s00bu := (s00yy1 + 116130*s00cb1) >> 8 |
| if s00ru < 0 { |
| s00ru = 0 |
| } else if s00ru > 0xffff { |
| s00ru = 0xffff |
| } |
| if s00gu < 0 { |
| s00gu = 0 |
| } else if s00gu > 0xffff { |
| s00gu = 0xffff |
| } |
| if s00bu < 0 { |
| s00bu = 0 |
| } else if s00bu > 0xffff { |
| s00bu = 0xffff |
| } |
| |
| s00r := float64(s00ru) |
| s00g := float64(s00gu) |
| s00b := float64(s00bu) |
| s10i := (sy0-src.Rect.Min.Y)*src.YStride + (sx1 - src.Rect.Min.X) |
| s10j := (sy0-src.Rect.Min.Y)*src.CStride + (sx1 - src.Rect.Min.X) |
| |
| // This is an inline version of image/color/ycbcr.go's YCbCr.RGBA method. |
| s10yy1 := int(src.Y[s10i]) * 0x10101 |
| s10cb1 := int(src.Cb[s10j]) - 128 |
| s10cr1 := int(src.Cr[s10j]) - 128 |
| s10ru := (s10yy1 + 91881*s10cr1) >> 8 |
| s10gu := (s10yy1 - 22554*s10cb1 - 46802*s10cr1) >> 8 |
| s10bu := (s10yy1 + 116130*s10cb1) >> 8 |
| if s10ru < 0 { |
| s10ru = 0 |
| } else if s10ru > 0xffff { |
| s10ru = 0xffff |
| } |
| if s10gu < 0 { |
| s10gu = 0 |
| } else if s10gu > 0xffff { |
| s10gu = 0xffff |
| } |
| if s10bu < 0 { |
| s10bu = 0 |
| } else if s10bu > 0xffff { |
| s10bu = 0xffff |
| } |
| |
| s10r := float64(s10ru) |
| s10g := float64(s10gu) |
| s10b := float64(s10bu) |
| s10r = xFrac1*s00r + xFrac0*s10r |
| s10g = xFrac1*s00g + xFrac0*s10g |
| s10b = xFrac1*s00b + xFrac0*s10b |
| s01i := (sy1-src.Rect.Min.Y)*src.YStride + (sx0 - src.Rect.Min.X) |
| s01j := (sy1-src.Rect.Min.Y)*src.CStride + (sx0 - src.Rect.Min.X) |
| |
| // This is an inline version of image/color/ycbcr.go's YCbCr.RGBA method. |
| s01yy1 := int(src.Y[s01i]) * 0x10101 |
| s01cb1 := int(src.Cb[s01j]) - 128 |
| s01cr1 := int(src.Cr[s01j]) - 128 |
| s01ru := (s01yy1 + 91881*s01cr1) >> 8 |
| s01gu := (s01yy1 - 22554*s01cb1 - 46802*s01cr1) >> 8 |
| s01bu := (s01yy1 + 116130*s01cb1) >> 8 |
| if s01ru < 0 { |
| s01ru = 0 |
| } else if s01ru > 0xffff { |
| s01ru = 0xffff |
| } |
| if s01gu < 0 { |
| s01gu = 0 |
| } else if s01gu > 0xffff { |
| s01gu = 0xffff |
| } |
| if s01bu < 0 { |
| s01bu = 0 |
| } else if s01bu > 0xffff { |
| s01bu = 0xffff |
| } |
| |
| s01r := float64(s01ru) |
| s01g := float64(s01gu) |
| s01b := float64(s01bu) |
| s11i := (sy1-src.Rect.Min.Y)*src.YStride + (sx1 - src.Rect.Min.X) |
| s11j := (sy1-src.Rect.Min.Y)*src.CStride + (sx1 - src.Rect.Min.X) |
| |
| // This is an inline version of image/color/ycbcr.go's YCbCr.RGBA method. |
| s11yy1 := int(src.Y[s11i]) * 0x10101 |
| s11cb1 := int(src.Cb[s11j]) - 128 |
| s11cr1 := int(src.Cr[s11j]) - 128 |
| s11ru := (s11yy1 + 91881*s11cr1) >> 8 |
| s11gu := (s11yy1 - 22554*s11cb1 - 46802*s11cr1) >> 8 |
| s11bu := (s11yy1 + 116130*s11cb1) >> 8 |
| if s11ru < 0 { |
| s11ru = 0 |
| } else if s11ru > 0xffff { |
| s11ru = 0xffff |
| } |
| if s11gu < 0 { |
| s11gu = 0 |
| } else if s11gu > 0xffff { |
| s11gu = 0xffff |
| } |
| if s11bu < 0 { |
| s11bu = 0 |
| } else if s11bu > 0xffff { |
| s11bu = 0xffff |
| } |
| |
| s11r := float64(s11ru) |
| s11g := float64(s11gu) |
| s11b := float64(s11bu) |
| s11r = xFrac1*s01r + xFrac0*s11r |
| s11g = xFrac1*s01g + xFrac0*s11g |
| s11b = xFrac1*s01b + xFrac0*s11b |
| s11r = yFrac1*s10r + yFrac0*s11r |
| s11g = yFrac1*s10g + yFrac0*s11g |
| s11b = yFrac1*s10b + yFrac0*s11b |
| pr := uint32(s11r) |
| pg := uint32(s11g) |
| pb := uint32(s11b) |
| dst.Pix[d+0] = uint8(pr >> 8) |
| dst.Pix[d+1] = uint8(pg >> 8) |
| dst.Pix[d+2] = uint8(pb >> 8) |
| dst.Pix[d+3] = 0xff |
| } |
| } |
| } |
| |
| func (ablInterpolator) transform_RGBA_YCbCr422_Src(dst *image.RGBA, dr, adr image.Rectangle, d2s *f64.Aff3, src *image.YCbCr, sr image.Rectangle, bias image.Point, opts *Options) { |
| for dy := int32(adr.Min.Y); dy < int32(adr.Max.Y); dy++ { |
| dyf := float64(dr.Min.Y+int(dy)) + 0.5 |
| d := (dr.Min.Y+int(dy)-dst.Rect.Min.Y)*dst.Stride + (dr.Min.X+adr.Min.X-dst.Rect.Min.X)*4 |
| for dx := int32(adr.Min.X); dx < int32(adr.Max.X); dx, d = dx+1, d+4 { |
| dxf := float64(dr.Min.X+int(dx)) + 0.5 |
| sx := d2s[0]*dxf + d2s[1]*dyf + d2s[2] |
| sy := d2s[3]*dxf + d2s[4]*dyf + d2s[5] |
| if !(image.Point{int(sx) + bias.X, int(sy) + bias.Y}).In(sr) { |
| continue |
| } |
| |
| sx -= 0.5 |
| sx0 := int(sx) |
| xFrac0 := sx - float64(sx0) |
| xFrac1 := 1 - xFrac0 |
| sx0 += bias.X |
| sx1 := sx0 + 1 |
| if sx0 < sr.Min.X { |
| sx0, sx1 = sr.Min.X, sr.Min.X |
| xFrac0, xFrac1 = 0, 1 |
| } else if sx1 >= sr.Max.X { |
| sx0, sx1 = sr.Max.X-1, sr.Max.X-1 |
| xFrac0, xFrac1 = 1, 0 |
| } |
| |
| sy -= 0.5 |
| sy0 := int(sy) |
| yFrac0 := sy - float64(sy0) |
| yFrac1 := 1 - yFrac0 |
| sy0 += bias.Y |
| sy1 := sy0 + 1 |
| if sy0 < sr.Min.Y { |
| sy0, sy1 = sr.Min.Y, sr.Min.Y |
| yFrac0, yFrac1 = 0, 1 |
| } else if sy1 >= sr.Max.Y { |
| sy0, sy1 = sr.Max.Y-1, sr.Max.Y-1 |
| yFrac0, yFrac1 = 1, 0 |
| } |
| |
| s00i := (sy0-src.Rect.Min.Y)*src.YStride + (sx0 - src.Rect.Min.X) |
| s00j := (sy0-src.Rect.Min.Y)*src.CStride + ((sx0)/2 - src.Rect.Min.X/2) |
| |
| // This is an inline version of image/color/ycbcr.go's YCbCr.RGBA method. |
| s00yy1 := int(src.Y[s00i]) * 0x10101 |
| s00cb1 := int(src.Cb[s00j]) - 128 |
| s00cr1 := int(src.Cr[s00j]) - 128 |
| s00ru := (s00yy1 + 91881*s00cr1) >> 8 |
| s00gu := (s00yy1 - 22554*s00cb1 - 46802*s00cr1) >> 8 |
| s00bu := (s00yy1 + 116130*s00cb1) >> 8 |
| if s00ru < 0 { |
| s00ru = 0 |
| } else if s00ru > 0xffff { |
| s00ru = 0xffff |
| } |
| if s00gu < 0 { |
| s00gu = 0 |
| } else if s00gu > 0xffff { |
| s00gu = 0xffff |
| } |
| if s00bu < 0 { |
| s00bu = 0 |
| } else if s00bu > 0xffff { |
| s00bu = 0xffff |
| } |
| |
| s00r := float64(s00ru) |
| s00g := float64(s00gu) |
| s00b := float64(s00bu) |
| s10i := (sy0-src.Rect.Min.Y)*src.YStride + (sx1 - src.Rect.Min.X) |
| s10j := (sy0-src.Rect.Min.Y)*src.CStride + ((sx1)/2 - src.Rect.Min.X/2) |
| |
| // This is an inline version of image/color/ycbcr.go's YCbCr.RGBA method. |
| s10yy1 := int(src.Y[s10i]) * 0x10101 |
| s10cb1 := int(src.Cb[s10j]) - 128 |
| s10cr1 := int(src.Cr[s10j]) - 128 |
| s10ru := (s10yy1 + 91881*s10cr1) >> 8 |
| s10gu := (s10yy1 - 22554*s10cb1 - 46802*s10cr1) >> 8 |
| s10bu := (s10yy1 + 116130*s10cb1) >> 8 |
| if s10ru < 0 { |
| s10ru = 0 |
| } else if s10ru > 0xffff { |
| s10ru = 0xffff |
| } |
| if s10gu < 0 { |
| s10gu = 0 |
| } else if s10gu > 0xffff { |
| s10gu = 0xffff |
| } |
| if s10bu < 0 { |
| s10bu = 0 |
| } else if s10bu > 0xffff { |
| s10bu = 0xffff |
| } |
| |
| s10r := float64(s10ru) |
| s10g := float64(s10gu) |
| s10b := float64(s10bu) |
| s10r = xFrac1*s00r + xFrac0*s10r |
| s10g = xFrac1*s00g + xFrac0*s10g |
| s10b = xFrac1*s00b + xFrac0*s10b |
| s01i := (sy1-src.Rect.Min.Y)*src.YStride + (sx0 - src.Rect.Min.X) |
| s01j := (sy1-src.Rect.Min.Y)*src.CStride + ((sx0)/2 - src.Rect.Min.X/2) |
| |
| // This is an inline version of image/color/ycbcr.go's YCbCr.RGBA method. |
| s01yy1 := int(src.Y[s01i]) * 0x10101 |
| s01cb1 := int(src.Cb[s01j]) - 128 |
| s01cr1 := int(src.Cr[s01j]) - 128 |
| s01ru := (s01yy1 + 91881*s01cr1) >> 8 |
| s01gu := (s01yy1 - 22554*s01cb1 - 46802*s01cr1) >> 8 |
| s01bu := (s01yy1 + 116130*s01cb1) >> 8 |
| if s01ru < 0 { |
| s01ru = 0 |
| } else if s01ru > 0xffff { |
| s01ru = 0xffff |
| } |
| if s01gu < 0 { |
| s01gu = 0 |
| } else if s01gu > 0xffff { |
| s01gu = 0xffff |
| } |
| if s01bu < 0 { |
| s01bu = 0 |
| } else if s01bu > 0xffff { |
| s01bu = 0xffff |
| } |
| |
| s01r := float64(s01ru) |
| s01g := float64(s01gu) |
| s01b := float64(s01bu) |
| s11i := (sy1-src.Rect.Min.Y)*src.YStride + (sx1 - src.Rect.Min.X) |
| s11j := (sy1-src.Rect.Min.Y)*src.CStride + ((sx1)/2 - src.Rect.Min.X/2) |
| |
| // This is an inline version of image/color/ycbcr.go's YCbCr.RGBA method. |
| s11yy1 := int(src.Y[s11i]) * 0x10101 |
| s11cb1 := int(src.Cb[s11j]) - 128 |
| s11cr1 := int(src.Cr[s11j]) - 128 |
| s11ru := (s11yy1 + 91881*s11cr1) >> 8 |
| s11gu := (s11yy1 - 22554*s11cb1 - 46802*s11cr1) >> 8 |
| s11bu := (s11yy1 + 116130*s11cb1) >> 8 |
| if s11ru < 0 { |
| s11ru = 0 |
| } else if s11ru > 0xffff { |
| s11ru = 0xffff |
| } |
| if s11gu < 0 { |
| s11gu = 0 |
| } else if s11gu > 0xffff { |
| s11gu = 0xffff |
| } |
| if s11bu < 0 { |
| s11bu = 0 |
| } else if s11bu > 0xffff { |
| s11bu = 0xffff |
| } |
| |
| s11r := float64(s11ru) |
| s11g := float64(s11gu) |
| s11b := float64(s11bu) |
| s11r = xFrac1*s01r + xFrac0*s11r |
| s11g = xFrac1*s01g + xFrac0*s11g |
| s11b = xFrac1*s01b + xFrac0*s11b |
| s11r = yFrac1*s10r + yFrac0*s11r |
| s11g = yFrac1*s10g + yFrac0*s11g |
| s11b = yFrac1*s10b + yFrac0*s11b |
| pr := uint32(s11r) |
| pg := uint32(s11g) |
| pb := uint32(s11b) |
| dst.Pix[d+0] = uint8(pr >> 8) |
| dst.Pix[d+1] = uint8(pg >> 8) |
| dst.Pix[d+2] = uint8(pb >> 8) |
| dst.Pix[d+3] = 0xff |
| } |
| } |
| } |
| |
| func (ablInterpolator) transform_RGBA_YCbCr420_Src(dst *image.RGBA, dr, adr image.Rectangle, d2s *f64.Aff3, src *image.YCbCr, sr image.Rectangle, bias image.Point, opts *Options) { |
| for dy := int32(adr.Min.Y); dy < int32(adr.Max.Y); dy++ { |
| dyf := float64(dr.Min.Y+int(dy)) + 0.5 |
| d := (dr.Min.Y+int(dy)-dst.Rect.Min.Y)*dst.Stride + (dr.Min.X+adr.Min.X-dst.Rect.Min.X)*4 |
| for dx := int32(adr.Min.X); dx < int32(adr.Max.X); dx, d = dx+1, d+4 { |
| dxf := float64(dr.Min.X+int(dx)) + 0.5 |
| sx := d2s[0]*dxf + d2s[1]*dyf + d2s[2] |
| sy := d2s[3]*dxf + d2s[4]*dyf + d2s[5] |
| if !(image.Point{int(sx) + bias.X, int(sy) + bias.Y}).In(sr) { |
| continue |
| } |
| |
| sx -= 0.5 |
| sx0 := int(sx) |
| xFrac0 := sx - float64(sx0) |
| xFrac1 := 1 - xFrac0 |
| sx0 += bias.X |
| sx1 := sx0 + 1 |
| if sx0 < sr.Min.X { |
| sx0, sx1 = sr.Min.X, sr.Min.X |
| xFrac0, xFrac1 = 0, 1 |
| } else if sx1 >= sr.Max.X { |
| sx0, sx1 = sr.Max.X-1, sr.Max.X-1 |
| xFrac0, xFrac1 = 1, 0 |
| } |
| |
| sy -= 0.5 |
| sy0 := int(sy) |
| yFrac0 := sy - float64(sy0) |
| yFrac1 := 1 - yFrac0 |
| sy0 += bias.Y |
| sy1 := sy0 + 1 |
| if sy0 < sr.Min.Y { |
| sy0, sy1 = sr.Min.Y, sr.Min.Y |
| yFrac0, yFrac1 = 0, 1 |
| } else if sy1 >= sr.Max.Y { |
| sy0, sy1 = sr.Max.Y-1, sr.Max.Y-1 |
| yFrac0, yFrac1 = 1, 0 |
| } |
| |
| s00i := (sy0-src.Rect.Min.Y)*src.YStride + (sx0 - src.Rect.Min.X) |
| s00j := ((sy0)/2-src.Rect.Min.Y/2)*src.CStride + ((sx0)/2 - src.Rect.Min.X/2) |
| |
| // This is an inline version of image/color/ycbcr.go's YCbCr.RGBA method. |
| s00yy1 := int(src.Y[s00i]) * 0x10101 |
| s00cb1 := int(src.Cb[s00j]) - 128 |
| s00cr1 := int(src.Cr[s00j]) - 128 |
| s00ru := (s00yy1 + 91881*s00cr1) >> 8 |
| s00gu := (s00yy1 - 22554*s00cb1 - 46802*s00cr1) >> 8 |
| s00bu := (s00yy1 + 116130*s00cb1) >> 8 |
| if s00ru < 0 { |
| s00ru = 0 |
| } else if s00ru > 0xffff { |
| s00ru = 0xffff |
| } |
| if s00gu < 0 { |
| s00gu = 0 |
| } else if s00gu > 0xffff { |
| s00gu = 0xffff |
| } |
| if s00bu < 0 { |
| s00bu = 0 |
| } else if s00bu > 0xffff { |
| s00bu = 0xffff |
| } |
| |
| s00r := float64(s00ru) |
| s00g := float64(s00gu) |
| s00b := float64(s00bu) |
| s10i := (sy0-src.Rect.Min.Y)*src.YStride + (sx1 - src.Rect.Min.X) |
| s10j := ((sy0)/2-src.Rect.Min.Y/2)*src.CStride + ((sx1)/2 - src.Rect.Min.X/2) |
| |
| // This is an inline version of image/color/ycbcr.go's YCbCr.RGBA method. |
| s10yy1 := int(src.Y[s10i]) * 0x10101 |
| s10cb1 := int(src.Cb[s10j]) - 128 |
| s10cr1 := int(src.Cr[s10j]) - 128 |
| s10ru := (s10yy1 + 91881*s10cr1) >> 8 |
| s10gu := (s10yy1 - 22554*s10cb1 - 46802*s10cr1) >> 8 |
| s10bu := (s10yy1 + 116130*s10cb1) >> 8 |
| if s10ru < 0 { |
| s10ru = 0 |
| } else if s10ru > 0xffff { |
| s10ru = 0xffff |
| } |
| if s10gu < 0 { |
| s10gu = 0 |
| } else if s10gu > 0xffff { |
| s10gu = 0xffff |
| } |
| if s10bu < 0 { |
| s10bu = 0 |
| } else if s10bu > 0xffff { |
| s10bu = 0xffff |
| } |
| |
| s10r := float64(s10ru) |
| s10g := float64(s10gu) |
| s10b := float64(s10bu) |
| s10r = xFrac1*s00r + xFrac0*s10r |
| s10g = xFrac1*s00g + xFrac0*s10g |
| s10b = xFrac1*s00b + xFrac0*s10b |
| s01i := (sy1-src.Rect.Min.Y)*src.YStride + (sx0 - src.Rect.Min.X) |
| s01j := ((sy1)/2-src.Rect.Min.Y/2)*src.CStride + ((sx0)/2 - src.Rect.Min.X/2) |
| |
| // This is an inline version of image/color/ycbcr.go's YCbCr.RGBA method. |
| s01yy1 := int(src.Y[s01i]) * 0x10101 |
| s01cb1 := int(src.Cb[s01j]) - 128 |
| s01cr1 := int(src.Cr[s01j]) - 128 |
| s01ru := (s01yy1 + 91881*s01cr1) >> 8 |
| s01gu := (s01yy1 - 22554*s01cb1 - 46802*s01cr1) >> 8 |
| s01bu := (s01yy1 + 116130*s01cb1) >> 8 |
| if s01ru < 0 { |
| s01ru = 0 |
| } else if s01ru > 0xffff { |
| s01ru = 0xffff |
| } |
| if s01gu < 0 { |
| s01gu = 0 |
| } else if s01gu > 0xffff { |
| s01gu = 0xffff |
| } |
| if s01bu < 0 { |
| s01bu = 0 |
| } else if s01bu > 0xffff { |
| s01bu = 0xffff |
| } |
| |
| s01r := float64(s01ru) |
| s01g := float64(s01gu) |
| s01b := float64(s01bu) |
| s11i := (sy1-src.Rect.Min.Y)*src.YStride + (sx1 - src.Rect.Min.X) |
| s11j := ((sy1)/2-src.Rect.Min.Y/2)*src.CStride + ((sx1)/2 - src.Rect.Min.X/2) |
| |
| // This is an inline version of image/color/ycbcr.go's YCbCr.RGBA method. |
| s11yy1 := int(src.Y[s11i]) * 0x10101 |
| s11cb1 := int(src.Cb[s11j]) - 128 |
| s11cr1 := int(src.Cr[s11j]) - 128 |
| s11ru := (s11yy1 + 91881*s11cr1) >> 8 |
| s11gu := (s11yy1 - 22554*s11cb1 - 46802*s11cr1) >> 8 |
| s11bu := (s11yy1 + 116130*s11cb1) >> 8 |
| if s11ru < 0 { |
| s11ru = 0 |
| } else if s11ru > 0xffff { |
| s11ru = 0xffff |
| } |
| if s11gu < 0 { |
| s11gu = 0 |
| } else if s11gu > 0xffff { |
| s11gu = 0xffff |
| } |
| if s11bu < 0 { |
| s11bu = 0 |
| } else if s11bu > 0xffff { |
| s11bu = 0xffff |
| } |
| |
| s11r := float64(s11ru) |
| s11g := float64(s11gu) |
| s11b := float64(s11bu) |
| s11r = xFrac1*s01r + xFrac0*s11r |
| s11g = xFrac1*s01g + xFrac0*s11g |
| s11b = xFrac1*s01b + xFrac0*s11b |
| s11r = yFrac1*s10r + yFrac0*s11r |
| s11g = yFrac1*s10g + yFrac0*s11g |
| s11b = yFrac1*s10b + yFrac0*s11b |
| pr := uint32(s11r) |
| pg := uint32(s11g) |
| pb := uint32(s11b) |
| dst.Pix[d+0] = uint8(pr >> 8) |
| dst.Pix[d+1] = uint8(pg >> 8) |
| dst.Pix[d+2] = uint8(pb >> 8) |
| dst.Pix[d+3] = 0xff |
| } |
| } |
| } |
| |
| func (ablInterpolator) transform_RGBA_YCbCr440_Src(dst *image.RGBA, dr, adr image.Rectangle, d2s *f64.Aff3, src *image.YCbCr, sr image.Rectangle, bias image.Point, opts *Options) { |
| for dy := int32(adr.Min.Y); dy < int32(adr.Max.Y); dy++ { |
| dyf := float64(dr.Min.Y+int(dy)) + 0.5 |
| d := (dr.Min.Y+int(dy)-dst.Rect.Min.Y)*dst.Stride + (dr.Min.X+adr.Min.X-dst.Rect.Min.X)*4 |
| for dx := int32(adr.Min.X); dx < int32(adr.Max.X); dx, d = dx+1, d+4 { |
| dxf := float64(dr.Min.X+int(dx)) + 0.5 |
| sx := d2s[0]*dxf + d2s[1]*dyf + d2s[2] |
| sy := d2s[3]*dxf + d2s[4]*dyf + d2s[5] |
| if !(image.Point{int(sx) + bias.X, int(sy) + bias.Y}).In(sr) { |
| continue |
| } |
| |
| sx -= 0.5 |
| sx0 := int(sx) |
| xFrac0 := sx - float64(sx0) |
| xFrac1 := 1 - xFrac0 |
| sx0 += bias.X |
| sx1 := sx0 + 1 |
| if sx0 < sr.Min.X { |
| sx0, sx1 = sr.Min.X, sr.Min.X |
| xFrac0, xFrac1 = 0, 1 |
| } else if sx1 >= sr.Max.X { |
| sx0, sx1 = sr.Max.X-1, sr.Max.X-1 |
| xFrac0, xFrac1 = 1, 0 |
| } |
| |
| sy -= 0.5 |
| sy0 := int(sy) |
| yFrac0 := sy - float64(sy0) |
| yFrac1 := 1 - yFrac0 |
| sy0 += bias.Y |
| sy1 := sy0 + 1 |
| if sy0 < sr.Min.Y { |
| sy0, sy1 = sr.Min.Y, sr.Min.Y |
| yFrac0, yFrac1 = 0, 1 |
| } else if sy1 >= sr.Max.Y { |
| sy0, sy1 = sr.Max.Y-1, sr.Max.Y-1 |
| yFrac0, yFrac1 = 1, 0 |
| } |
| |
| s00i := (sy0-src.Rect.Min.Y)*src.YStride + (sx0 - src.Rect.Min.X) |
| s00j := ((sy0)/2-src.Rect.Min.Y/2)*src.CStride + (sx0 - src.Rect.Min.X) |
| |
| // This is an inline version of image/color/ycbcr.go's YCbCr.RGBA method. |
| s00yy1 := int(src.Y[s00i]) * 0x10101 |
| s00cb1 := int(src.Cb[s00j]) - 128 |
| s00cr1 := int(src.Cr[s00j]) - 128 |
| s00ru := (s00yy1 + 91881*s00cr1) >> 8 |
| s00gu := (s00yy1 - 22554*s00cb1 - 46802*s00cr1) >> 8 |
| s00bu := (s00yy1 + 116130*s00cb1) >> 8 |
| if s00ru < 0 { |
| s00ru = 0 |
| } else if s00ru > 0xffff { |
| s00ru = 0xffff |
| } |
| if s00gu < 0 { |
| s00gu = 0 |
| } else if s00gu > 0xffff { |
| s00gu = 0xffff |
| } |
| if s00bu < 0 { |
| s00bu = 0 |
| } else if s00bu > 0xffff { |
| s00bu = 0xffff |
| } |
| |
| s00r := float64(s00ru) |
| s00g := float64(s00gu) |
| s00b := float64(s00bu) |
| s10i := (sy0-src.Rect.Min.Y)*src.YStride + (sx1 - src.Rect.Min.X) |
| s10j := ((sy0)/2-src.Rect.Min.Y/2)*src.CStride + (sx1 - src.Rect.Min.X) |
| |
| // This is an inline version of image/color/ycbcr.go's YCbCr.RGBA method. |
| s10yy1 := int(src.Y[s10i]) * 0x10101 |
| s10cb1 := int(src.Cb[s10j]) - 128 |
| s10cr1 := int(src.Cr[s10j]) - 128 |
| s10ru := (s10yy1 + 91881*s10cr1) >> 8 |
| s10gu := (s10yy1 - 22554*s10cb1 - 46802*s10cr1) >> 8 |
| s10bu := (s10yy1 + 116130*s10cb1) >> 8 |
| if s10ru < 0 { |
| s10ru = 0 |
| } else if s10ru > 0xffff { |
| s10ru = 0xffff |
| } |
| if s10gu < 0 { |
| s10gu = 0 |
| } else if s10gu > 0xffff { |
| s10gu = 0xffff |
| } |
| if s10bu < 0 { |
| s10bu = 0 |
| } else if s10bu > 0xffff { |
| s10bu = 0xffff |
| } |
| |
| s10r := float64(s10ru) |
| s10g := float64(s10gu) |
| s10b := float64(s10bu) |
| s10r = xFrac1*s00r + xFrac0*s10r |
| s10g = xFrac1*s00g + xFrac0*s10g |
| s10b = xFrac1*s00b + xFrac0*s10b |
| s01i := (sy1-src.Rect.Min.Y)*src.YStride + (sx0 - src.Rect.Min.X) |
| s01j := ((sy1)/2-src.Rect.Min.Y/2)*src.CStride + (sx0 - src.Rect.Min.X) |
| |
| // This is an inline version of image/color/ycbcr.go's YCbCr.RGBA method. |
| s01yy1 := int(src.Y[s01i]) * 0x10101 |
| s01cb1 := int(src.Cb[s01j]) - 128 |
| s01cr1 := int(src.Cr[s01j]) - 128 |
| s01ru := (s01yy1 + 91881*s01cr1) >> 8 |
| s01gu := (s01yy1 - 22554*s01cb1 - 46802*s01cr1) >> 8 |
| s01bu := (s01yy1 + 116130*s01cb1) >> 8 |
| if s01ru < 0 { |
| s01ru = 0 |
| } else if s01ru > 0xffff { |
| s01ru = 0xffff |
| } |
| if s01gu < 0 { |
| s01gu = 0 |
| } else if s01gu > 0xffff { |
| s01gu = 0xffff |
| } |
| if s01bu < 0 { |
| s01bu = 0 |
| } else if s01bu > 0xffff { |
| s01bu = 0xffff |
| } |
| |
| s01r := float64(s01ru) |
| s01g := float64(s01gu) |
| s01b := float64(s01bu) |
| s11i := (sy1-src.Rect.Min.Y)*src.YStride + (sx1 - src.Rect.Min.X) |
| s11j := ((sy1)/2-src.Rect.Min.Y/2)*src.CStride + (sx1 - src.Rect.Min.X) |
| |
| // This is an inline version of image/color/ycbcr.go's YCbCr.RGBA method. |
| s11yy1 := int(src.Y[s11i]) * 0x10101 |
| s11cb1 := int(src.Cb[s11j]) - 128 |
| s11cr1 := int(src.Cr[s11j]) - 128 |
| s11ru := (s11yy1 + 91881*s11cr1) >> 8 |
| s11gu := (s11yy1 - 22554*s11cb1 - 46802*s11cr1) >> 8 |
| s11bu := (s11yy1 + 116130*s11cb1) >> 8 |
| if s11ru < 0 { |
| s11ru = 0 |
| } else if s11ru > 0xffff { |
| s11ru = 0xffff |
| } |
| if s11gu < 0 { |
| s11gu = 0 |
| } else if s11gu > 0xffff { |
| s11gu = 0xffff |
| } |
| if s11bu < 0 { |
| s11bu = 0 |
| } else if s11bu > 0xffff { |
| s11bu = 0xffff |
| } |
| |
| s11r := float64(s11ru) |
| s11g := float64(s11gu) |
| s11b := float64(s11bu) |
| s11r = xFrac1*s01r + xFrac0*s11r |
| s11g = xFrac1*s01g + xFrac0*s11g |
| s11b = xFrac1*s01b + xFrac0*s11b |
| s11r = yFrac1*s10r + yFrac0*s11r |
| s11g = yFrac1*s10g + yFrac0*s11g |
| s11b = yFrac1*s10b + yFrac0*s11b |
| pr := uint32(s11r) |
| pg := uint32(s11g) |
| pb := uint32(s11b) |
| dst.Pix[d+0] = uint8(pr >> 8) |
| dst.Pix[d+1] = uint8(pg >> 8) |
| dst.Pix[d+2] = uint8(pb >> 8) |
| dst.Pix[d+3] = 0xff |
| } |
| } |
| } |
| |
| func (ablInterpolator) transform_RGBA_Image_Over(dst *image.RGBA, dr, adr image.Rectangle, d2s *f64.Aff3, src image.Image, sr image.Rectangle, bias image.Point, opts *Options) { |
| for dy := int32(adr.Min.Y); dy < int32(adr.Max.Y); dy++ { |
| dyf := float64(dr.Min.Y+int(dy)) + 0.5 |
| d := (dr.Min.Y+int(dy)-dst.Rect.Min.Y)*dst.Stride + (dr.Min.X+adr.Min.X-dst.Rect.Min.X)*4 |
| for dx := int32(adr.Min.X); dx < int32(adr.Max.X); dx, d = dx+1, d+4 { |
| dxf := float64(dr.Min.X+int(dx)) + 0.5 |
| sx := d2s[0]*dxf + d2s[1]*dyf + d2s[2] |
| sy := d2s[3]*dxf + d2s[4]*dyf + d2s[5] |
| if !(image.Point{int(sx) + bias.X, int(sy) + bias.Y}).In(sr) { |
| continue |
| } |
| |
| sx -= 0.5 |
| sx0 := int(sx) |
| xFrac0 := sx - float64(sx0) |
| xFrac1 := 1 - xFrac0 |
| sx0 += bias.X |
| sx1 := sx0 + 1 |
| if sx0 < sr.Min.X { |
| sx0, sx1 = sr.Min.X, sr.Min.X |
| xFrac0, xFrac1 = 0, 1 |
| } else if sx1 >= sr.Max.X { |
| sx0, sx1 = sr.Max.X-1, sr.Max.X-1 |
| xFrac0, xFrac1 = 1, 0 |
| } |
| |
| sy -= 0.5 |
| sy0 := int(sy) |
| yFrac0 := sy - float64(sy0) |
| yFrac1 := 1 - yFrac0 |
| sy0 += bias.Y |
| sy1 := sy0 + 1 |
| if sy0 < sr.Min.Y { |
| sy0, sy1 = sr.Min.Y, sr.Min.Y |
| yFrac0, yFrac1 = 0, 1 |
| } else if sy1 >= sr.Max.Y { |
| sy0, sy1 = sr.Max.Y-1, sr.Max.Y-1 |
| yFrac0, yFrac1 = 1, 0 |
| } |
| |
| s00ru, s00gu, s00bu, s00au := src.At(sx0, sy0).RGBA() |
| s00r := float64(s00ru) |
| s00g := float64(s00gu) |
| s00b := float64(s00bu) |
| s00a := float64(s00au) |
| s10ru, s10gu, s10bu, s10au := src.At(sx1, sy0).RGBA() |
| s10r := float64(s10ru) |
| s10g := float64(s10gu) |
| s10b := float64(s10bu) |
| s10a := float64(s10au) |
| s10r = xFrac1*s00r + xFrac0*s10r |
| s10g = xFrac1*s00g + xFrac0*s10g |
| s10b = xFrac1*s00b + xFrac0*s10b |
| s10a = xFrac1*s00a + xFrac0*s10a |
| s01ru, s01gu, s01bu, s01au := src.At(sx0, sy1).RGBA() |
| s01r := float64(s01ru) |
| s01g := float64(s01gu) |
| s01b := float64(s01bu) |
| s01a := float64(s01au) |
| s11ru, s11gu, s11bu, s11au := src.At(sx1, sy1).RGBA() |
| s11r := float64(s11ru) |
| s11g := float64(s11gu) |
| s11b := float64(s11bu) |
| s11a := float64(s11au) |
| s11r = xFrac1*s01r + xFrac0*s11r |
| s11g = xFrac1*s01g + xFrac0*s11g |
| s11b = xFrac1*s01b + xFrac0*s11b |
| s11a = xFrac1*s01a + xFrac0*s11a |
| s11r = yFrac1*s10r + yFrac0*s11r |
| s11g = yFrac1*s10g + yFrac0*s11g |
| s11b = yFrac1*s10b + yFrac0*s11b |
| s11a = yFrac1*s10a + yFrac0*s11a |
| pr := uint32(s11r) |
| pg := uint32(s11g) |
| pb := uint32(s11b) |
| pa := uint32(s11a) |
| pa1 := (0xffff - pa) * 0x101 |
| dst.Pix[d+0] = uint8((uint32(dst.Pix[d+0])*pa1/0xffff + pr) >> 8) |
| dst.Pix[d+1] = uint8((uint32(dst.Pix[d+1])*pa1/0xffff + pg) >> 8) |
| dst.Pix[d+2] = uint8((uint32(dst.Pix[d+2])*pa1/0xffff + pb) >> 8) |
| dst.Pix[d+3] = uint8((uint32(dst.Pix[d+3])*pa1/0xffff + pa) >> 8) |
| } |
| } |
| } |
| |
| func (ablInterpolator) transform_RGBA_Image_Src(dst *image.RGBA, dr, adr image.Rectangle, d2s *f64.Aff3, src image.Image, sr image.Rectangle, bias image.Point, opts *Options) { |
| for dy := int32(adr.Min.Y); dy < int32(adr.Max.Y); dy++ { |
| dyf := float64(dr.Min.Y+int(dy)) + 0.5 |
| d := (dr.Min.Y+int(dy)-dst.Rect.Min.Y)*dst.Stride + (dr.Min.X+adr.Min.X-dst.Rect.Min.X)*4 |
| for dx := int32(adr.Min.X); dx < int32(adr.Max.X); dx, d = dx+1, d+4 { |
| dxf := float64(dr.Min.X+int(dx)) + 0.5 |
| sx := d2s[0]*dxf + d2s[1]*dyf + d2s[2] |
| sy := d2s[3]*dxf + d2s[4]*dyf + d2s[5] |
| if !(image.Point{int(sx) + bias.X, int(sy) + bias.Y}).In(sr) { |
| continue |
| } |
| |
| sx -= 0.5 |
| sx0 := int(sx) |
| xFrac0 := sx - float64(sx0) |
| xFrac1 := 1 - xFrac0 |
| sx0 += bias.X |
| sx1 := sx0 + 1 |
| if sx0 < sr.Min.X { |
| sx0, sx1 = sr.Min.X, sr.Min.X |
| xFrac0, xFrac1 = 0, 1 |
| } else if sx1 >= sr.Max.X { |
| sx0, sx1 = sr.Max.X-1, sr.Max.X-1 |
| xFrac0, xFrac1 = 1, 0 |
| } |
| |
| sy -= 0.5 |
| sy0 := int(sy) |
| yFrac0 := sy - float64(sy0) |
| yFrac1 := 1 - yFrac0 |
| sy0 += bias.Y |
| sy1 := sy0 + 1 |
| if sy0 < sr.Min.Y { |
| sy0, sy1 = sr.Min.Y, sr.Min.Y |
| yFrac0, yFrac1 = 0, 1 |
| } else if sy1 >= sr.Max.Y { |
| sy0, sy1 = sr.Max.Y-1, sr.Max.Y-1 |
| yFrac0, yFrac1 = 1, 0 |
| } |
| |
| s00ru, s00gu, s00bu, s00au := src.At(sx0, sy0).RGBA() |
| s00r := float64(s00ru) |
| s00g := float64(s00gu) |
| s00b := float64(s00bu) |
| s00a := float64(s00au) |
| s10ru, s10gu, s10bu, s10au := src.At(sx1, sy0).RGBA() |
| s10r := float64(s10ru) |
| s10g := float64(s10gu) |
| s10b := float64(s10bu) |
| s10a := float64(s10au) |
| s10r = xFrac1*s00r + xFrac0*s10r |
| s10g = xFrac1*s00g + xFrac0*s10g |
| s10b = xFrac1*s00b + xFrac0*s10b |
| s10a = xFrac1*s00a + xFrac0*s10a |
| s01ru, s01gu, s01bu, s01au := src.At(sx0, sy1).RGBA() |
| s01r := float64(s01ru) |
| s01g := float64(s01gu) |
| s01b := float64(s01bu) |
| s01a := float64(s01au) |
| s11ru, s11gu, s11bu, s11au := src.At(sx1, sy1).RGBA() |
| s11r := float64(s11ru) |
| s11g := float64(s11gu) |
| s11b := float64(s11bu) |
| s11a := float64(s11au) |
| s11r = xFrac1*s01r + xFrac0*s11r |
| s11g = xFrac1*s01g + xFrac0*s11g |
| s11b = xFrac1*s01b + xFrac0*s11b |
| s11a = xFrac1*s01a + xFrac0*s11a |
| s11r = yFrac1*s10r + yFrac0*s11r |
| s11g = yFrac1*s10g + yFrac0*s11g |
| s11b = yFrac1*s10b + yFrac0*s11b |
| s11a = yFrac1*s10a + yFrac0*s11a |
| pr := uint32(s11r) |
| pg := uint32(s11g) |
| pb := uint32(s11b) |
| pa := uint32(s11a) |
| dst.Pix[d+0] = uint8(pr >> 8) |
| dst.Pix[d+1] = uint8(pg >> 8) |
| dst.Pix[d+2] = uint8(pb >> 8) |
| dst.Pix[d+3] = uint8(pa >> 8) |
| } |
| } |
| } |
| |
| func (ablInterpolator) transform_Image_Image_Over(dst Image, dr, adr image.Rectangle, d2s *f64.Aff3, src image.Image, sr image.Rectangle, bias image.Point, opts *Options) { |
| srcMask, smp := opts.SrcMask, opts.SrcMaskP |
| dstMask, dmp := opts.DstMask, opts.DstMaskP |
| dstColorRGBA64 := &color.RGBA64{} |
| dstColor := color.Color(dstColorRGBA64) |
| for dy := int32(adr.Min.Y); dy < int32(adr.Max.Y); dy++ { |
| dyf := float64(dr.Min.Y+int(dy)) + 0.5 |
| for dx := int32(adr.Min.X); dx < int32(adr.Max.X); dx++ { |
| dxf := float64(dr.Min.X+int(dx)) + 0.5 |
| sx := d2s[0]*dxf + d2s[1]*dyf + d2s[2] |
| sy := d2s[3]*dxf + d2s[4]*dyf + d2s[5] |
| if !(image.Point{int(sx) + bias.X, int(sy) + bias.Y}).In(sr) { |
| continue |
| } |
| |
| sx -= 0.5 |
| sx0 := int(sx) |
| xFrac0 := sx - float64(sx0) |
| xFrac1 := 1 - xFrac0 |
| sx0 += bias.X |
| sx1 := sx0 + 1 |
| if sx0 < sr.Min.X { |
| sx0, sx1 = sr.Min.X, sr.Min.X |
| xFrac0, xFrac1 = 0, 1 |
| } else if sx1 >= sr.Max.X { |
| sx0, sx1 = sr.Max.X-1, sr.Max.X-1 |
| xFrac0, xFrac1 = 1, 0 |
| } |
| |
| sy -= 0.5 |
| sy0 := int(sy) |
| yFrac0 := sy - float64(sy0) |
| yFrac1 := 1 - yFrac0 |
| sy0 += bias.Y |
| sy1 := sy0 + 1 |
| if sy0 < sr.Min.Y { |
| sy0, sy1 = sr.Min.Y, sr.Min.Y |
| yFrac0, yFrac1 = 0, 1 |
| } else if sy1 >= sr.Max.Y { |
| sy0, sy1 = sr.Max.Y-1, sr.Max.Y-1 |
| yFrac0, yFrac1 = 1, 0 |
| } |
| |
| s00ru, s00gu, s00bu, s00au := src.At(sx0, sy0).RGBA() |
| if srcMask != nil { |
| _, _, _, ma := srcMask.At(smp.X+sx0, smp.Y+sy0).RGBA() |
| s00ru = s00ru * ma / 0xffff |
| s00gu = s00gu * ma / 0xffff |
| s00bu = s00bu * ma / 0xffff |
| s00au = s00au * ma / 0xffff |
| } |
| s00r := float64(s00ru) |
| s00g := float64(s00gu) |
| s00b := float64(s00bu) |
| s00a := float64(s00au) |
| s10ru, s10gu, s10bu, s10au := src.At(sx1, sy0).RGBA() |
| if srcMask != nil { |
| _, _, _, ma := srcMask.At(smp.X+sx1, smp.Y+sy0).RGBA() |
| s10ru = s10ru * ma / 0xffff |
| s10gu = s10gu * ma / 0xffff |
| s10bu = s10bu * ma / 0xffff |
| s10au = s10au * ma / 0xffff |
| } |
| s10r := float64(s10ru) |
| s10g := float64(s10gu) |
| s10b := float64(s10bu) |
| s10a := float64(s10au) |
| s10r = xFrac1*s00r + xFrac0*s10r |
| s10g = xFrac1*s00g + xFrac0*s10g |
| s10b = xFrac1*s00b + xFrac0*s10b |
| s10a = xFrac1*s00a + xFrac0*s10a |
| s01ru, s01gu, s01bu, s01au := src.At(sx0, sy1).RGBA() |
| if srcMask != nil { |
| _, _, _, ma := srcMask.At(smp.X+sx0, smp.Y+sy1).RGBA() |
| s01ru = s01ru * ma / 0xffff |
| s01gu = s01gu * ma / 0xffff |
| s01bu = s01bu * ma / 0xffff |
| s01au = s01au * ma / 0xffff |
| } |
| s01r := float64(s01ru) |
| s01g := float64(s01gu) |
| s01b := float64(s01bu) |
| s01a := float64(s01au) |
| s11ru, s11gu, s11bu, s11au := src.At(sx1, sy1).RGBA() |
| if srcMask != nil { |
| _, _, _, ma := srcMask.At(smp.X+sx1, smp.Y+sy1).RGBA() |
| s11ru = s11ru * ma / 0xffff |
| s11gu = s11gu * ma / 0xffff |
| s11bu = s11bu * ma / 0xffff |
| s11au = s11au * ma / 0xffff |
| } |
| s11r := float64(s11ru) |
| s11g := float64(s11gu) |
| s11b := float64(s11bu) |
| s11a := float64(s11au) |
| s11r = xFrac1*s01r + xFrac0*s11r |
| s11g = xFrac1*s01g + xFrac0*s11g |
| s11b = xFrac1*s01b + xFrac0*s11b |
| s11a = xFrac1*s01a + xFrac0*s11a |
| s11r = yFrac1*s10r + yFrac0*s11r |
| s11g = yFrac1*s10g + yFrac0*s11g |
| s11b = yFrac1*s10b + yFrac0*s11b |
| s11a = yFrac1*s10a + yFrac0*s11a |
| pr := uint32(s11r) |
| pg := uint32(s11g) |
| pb := uint32(s11b) |
| pa := uint32(s11a) |
| qr, qg, qb, qa := dst.At(dr.Min.X+int(dx), dr.Min.Y+int(dy)).RGBA() |
| if dstMask != nil { |
| _, _, _, ma := dstMask.At(dmp.X+dr.Min.X+int(dx), dmp.Y+dr.Min.Y+int(dy)).RGBA() |
| pr = pr * ma / 0xffff |
| pg = pg * ma / 0xffff |
| pb = pb * ma / 0xffff |
| pa = pa * ma / 0xffff |
| } |
| pa1 := 0xffff - pa |
| dstColorRGBA64.R = uint16(qr*pa1/0xffff + pr) |
| dstColorRGBA64.G = uint16(qg*pa1/0xffff + pg) |
| dstColorRGBA64.B = uint16(qb*pa1/0xffff + pb) |
| dstColorRGBA64.A = uint16(qa*pa1/0xffff + pa) |
| dst.Set(dr.Min.X+int(dx), dr.Min.Y+int(dy), dstColor) |
| } |
| } |
| } |
| |
| func (ablInterpolator) transform_Image_Image_Src(dst Image, dr, adr image.Rectangle, d2s *f64.Aff3, src image.Image, sr image.Rectangle, bias image.Point, opts *Options) { |
| srcMask, smp := opts.SrcMask, opts.SrcMaskP |
| dstMask, dmp := opts.DstMask, opts.DstMaskP |
| dstColorRGBA64 := &color.RGBA64{} |
| dstColor := color.Color(dstColorRGBA64) |
| for dy := int32(adr.Min.Y); dy < int32(adr.Max.Y); dy++ { |
| dyf := float64(dr.Min.Y+int(dy)) + 0.5 |
| for dx := int32(adr.Min.X); dx < int32(adr.Max.X); dx++ { |
| dxf := float64(dr.Min.X+int(dx)) + 0.5 |
| sx := d2s[0]*dxf + d2s[1]*dyf + d2s[2] |
| sy := d2s[3]*dxf + d2s[4]*dyf + d2s[5] |
| if !(image.Point{int(sx) + bias.X, int(sy) + bias.Y}).In(sr) { |
| continue |
| } |
| |
| sx -= 0.5 |
| sx0 := int(sx) |
| xFrac0 := sx - float64(sx0) |
| xFrac1 := 1 - xFrac0 |
| sx0 += bias.X |
| sx1 := sx0 + 1 |
| if sx0 < sr.Min.X { |
| sx0, sx1 = sr.Min.X, sr.Min.X |
| xFrac0, xFrac1 = 0, 1 |
| } else if sx1 >= sr.Max.X { |
| sx0, sx1 = sr.Max.X-1, sr.Max.X-1 |
| xFrac0, xFrac1 = 1, 0 |
| } |
| |
| sy -= 0.5 |
| sy0 := int(sy) |
| yFrac0 := sy - float64(sy0) |
| yFrac1 := 1 - yFrac0 |
| sy0 += bias.Y |
| sy1 := sy0 + 1 |
| if sy0 < sr.Min.Y { |
| sy0, sy1 = sr.Min.Y, sr.Min.Y |
| yFrac0, yFrac1 = 0, 1 |
| } else if sy1 >= sr.Max.Y { |
| sy0, sy1 = sr.Max.Y-1, sr.Max.Y-1 |
| yFrac0, yFrac1 = 1, 0 |
| } |
| |
| s00ru, s00gu, s00bu, s00au := src.At(sx0, sy0).RGBA() |
| if srcMask != nil { |
| _, _, _, ma := srcMask.At(smp.X+sx0, smp.Y+sy0).RGBA() |
| s00ru = s00ru * ma / 0xffff |
| s00gu = s00gu * ma / 0xffff |
| s00bu = s00bu * ma / 0xffff |
| s00au = s00au * ma / 0xffff |
| } |
| s00r := float64(s00ru) |
| s00g := float64(s00gu) |
| s00b := float64(s00bu) |
| s00a := float64(s00au) |
| s10ru, s10gu, s10bu, s10au := src.At(sx1, sy0).RGBA() |
| if srcMask != nil { |
| _, _, _, ma := srcMask.At(smp.X+sx1, smp.Y+sy0).RGBA() |
| s10ru = s10ru * ma / 0xffff |
| s10gu = s10gu * ma / 0xffff |
| s10bu = s10bu * ma / 0xffff |
| s10au = s10au * ma / 0xffff |
| } |
| s10r := float64(s10ru) |
| s10g := float64(s10gu) |
| s10b := float64(s10bu) |
| s10a := float64(s10au) |
| s10r = xFrac1*s00r + xFrac0*s10r |
| s10g = xFrac1*s00g + xFrac0*s10g |
| s10b = xFrac1*s00b + xFrac0*s10b |
| s10a = xFrac1*s00a + xFrac0*s10a |
| s01ru, s01gu, s01bu, s01au := src.At(sx0, sy1).RGBA() |
| if srcMask != nil { |
| _, _, _, ma := srcMask.At(smp.X+sx0, smp.Y+sy1).RGBA() |
| s01ru = s01ru * ma / 0xffff |
| s01gu = s01gu * ma / 0xffff |
| s01bu = s01bu * ma / 0xffff |
| s01au = s01au * ma / 0xffff |
| } |
| s01r := float64(s01ru) |
| s01g := float64(s01gu) |
| s01b := float64(s01bu) |
| s01a := float64(s01au) |
| s11ru, s11gu, s11bu, s11au := src.At(sx1, sy1).RGBA() |
| if srcMask != nil { |
| _, _, _, ma := srcMask.At(smp.X+sx1, smp.Y+sy1).RGBA() |
| s11ru = s11ru * ma / 0xffff |
| s11gu = s11gu * ma / 0xffff |
| s11bu = s11bu * ma / 0xffff |
| s11au = s11au * ma / 0xffff |
| } |
| s11r := float64(s11ru) |
| s11g := float64(s11gu) |
| s11b := float64(s11bu) |
| s11a := float64(s11au) |
| s11r = xFrac1*s01r + xFrac0*s11r |
| s11g = xFrac1*s01g + xFrac0*s11g |
| s11b = xFrac1*s01b + xFrac0*s11b |
| s11a = xFrac1*s01a + xFrac0*s11a |
| s11r = yFrac1*s10r + yFrac0*s11r |
| s11g = yFrac1*s10g + yFrac0*s11g |
| s11b = yFrac1*s10b + yFrac0*s11b |
| s11a = yFrac1*s10a + yFrac0*s11a |
| pr := uint32(s11r) |
| pg := uint32(s11g) |
| pb := uint32(s11b) |
| pa := uint32(s11a) |
| if dstMask != nil { |
| qr, qg, qb, qa := dst.At(dr.Min.X+int(dx), dr.Min.Y+int(dy)).RGBA() |
| _, _, _, ma := dstMask.At(dmp.X+dr.Min.X+int(dx), dmp.Y+dr.Min.Y+int(dy)).RGBA() |
| pr = pr * ma / 0xffff |
| pg = pg * ma / 0xffff |
| pb = pb * ma / 0xffff |
| pa = pa * ma / 0xffff |
| pa1 := 0xffff - ma |
| dstColorRGBA64.R = uint16(qr*pa1/0xffff + pr) |
| dstColorRGBA64.G = uint16(qg*pa1/0xffff + pg) |
| dstColorRGBA64.B = uint16(qb*pa1/0xffff + pb) |
| dstColorRGBA64.A = uint16(qa*pa1/0xffff + pa) |
| dst.Set(dr.Min.X+int(dx), dr.Min.Y+int(dy), dstColor) |
| } else { |
| dstColorRGBA64.R = uint16(pr) |
| dstColorRGBA64.G = uint16(pg) |
| dstColorRGBA64.B = uint16(pb) |
| dstColorRGBA64.A = uint16(pa) |
| dst.Set(dr.Min.X+int(dx), dr.Min.Y+int(dy), dstColor) |
| } |
| } |
| } |
| } |
| |
| func (z *kernelScaler) Scale(dst Image, dr image.Rectangle, src image.Image, sr image.Rectangle, op Op, opts *Options) { |
| if z.dw != int32(dr.Dx()) || z.dh != int32(dr.Dy()) || z.sw != int32(sr.Dx()) || z.sh != int32(sr.Dy()) { |
| z.kernel.Scale(dst, dr, src, sr, op, opts) |
| return |
| } |
| |
| var o Options |
| if opts != nil { |
| o = *opts |
| } |
| |
| // adr is the affected destination pixels. |
| adr := dst.Bounds().Intersect(dr) |
| adr, o.DstMask = clipAffectedDestRect(adr, o.DstMask, o.DstMaskP) |
| if adr.Empty() || sr.Empty() { |
| return |
| } |
| // Make adr relative to dr.Min. |
| adr = adr.Sub(dr.Min) |
| if op == Over && o.SrcMask == nil && opaque(src) { |
| op = Src |
| } |
| |
| if _, ok := src.(*image.Uniform); ok && o.DstMask == nil && o.SrcMask == nil && sr.In(src.Bounds()) { |
| Draw(dst, dr, src, src.Bounds().Min, op) |
| return |
| } |
| |
| // Create a temporary buffer: |
| // scaleX distributes the source image's columns over the temporary image. |
| // scaleY distributes the temporary image's rows over the destination image. |
| var tmp [][4]float64 |
| if z.pool.New != nil { |
| tmpp := z.pool.Get().(*[][4]float64) |
| defer z.pool.Put(tmpp) |
| tmp = *tmpp |
| } else { |
| tmp = z.makeTmpBuf() |
| } |
| |
| // sr is the source pixels. If it extends beyond the src bounds, |
| // we cannot use the type-specific fast paths, as they access |
| // the Pix fields directly without bounds checking. |
| // |
| // Similarly, the fast paths assume that the masks are nil. |
| if o.SrcMask != nil || !sr.In(src.Bounds()) { |
| z.scaleX_Image(tmp, src, sr, &o) |
| } else { |
| switch src := src.(type) { |
| case *image.Gray: |
| z.scaleX_Gray(tmp, src, sr, &o) |
| case *image.NRGBA: |
| z.scaleX_NRGBA(tmp, src, sr, &o) |
| case *image.RGBA: |
| z.scaleX_RGBA(tmp, src, sr, &o) |
| case *image.YCbCr: |
| switch src.SubsampleRatio { |
| default: |
| z.scaleX_Image(tmp, src, sr, &o) |
| case image.YCbCrSubsampleRatio444: |
| z.scaleX_YCbCr444(tmp, src, sr, &o) |
| case image.YCbCrSubsampleRatio422: |
| z.scaleX_YCbCr422(tmp, src, sr, &o) |
| case image.YCbCrSubsampleRatio420: |
| z.scaleX_YCbCr420(tmp, src, sr, &o) |
| case image.YCbCrSubsampleRatio440: |
| z.scaleX_YCbCr440(tmp, src, sr, &o) |
| } |
| default: |
| z.scaleX_Image(tmp, src, sr, &o) |
| } |
| } |
| |
| if o.DstMask != nil { |
| switch op { |
| case Over: |
| z.scaleY_Image_Over(dst, dr, adr, tmp, &o) |
| case Src: |
| z.scaleY_Image_Src(dst, dr, adr, tmp, &o) |
| } |
| } else { |
| switch op { |
| case Over: |
| switch dst := dst.(type) { |
| case *image.RGBA: |
| z.scaleY_RGBA_Over(dst, dr, adr, tmp, &o) |
| default: |
| z.scaleY_Image_Over(dst, dr, adr, tmp, &o) |
| } |
| case Src: |
| switch dst := dst.(type) { |
| case *image.RGBA: |
| z.scaleY_RGBA_Src(dst, dr, adr, tmp, &o) |
| default: |
| z.scaleY_Image_Src(dst, dr, adr, tmp, &o) |
| } |
| } |
| } |
| } |
| |
| func (q *Kernel) Transform(dst Image, s2d f64.Aff3, src image.Image, sr image.Rectangle, op Op, opts *Options) { |
| var o Options |
| if opts != nil { |
| o = *opts |
| } |
| |
| dr := transformRect(&s2d, &sr) |
| // adr is the affected destination pixels. |
| adr := dst.Bounds().Intersect(dr) |
| adr, o.DstMask = clipAffectedDestRect(adr, o.DstMask, o.DstMaskP) |
| if adr.Empty() || sr.Empty() { |
| return |
| } |
| if op == Over && o.SrcMask == nil && opaque(src) { |
| op = Src |
| } |
| d2s := invert(&s2d) |
| // bias is a translation of the mapping from dst coordinates to src |
| // coordinates such that the latter temporarily have non-negative X |
| // and Y coordinates. This allows us to write int(f) instead of |
| // int(math.Floor(f)), since "round to zero" and "round down" are |
| // equivalent when f >= 0, but the former is much cheaper. The X-- |
| // and Y-- are because the TransformLeaf methods have a "sx -= 0.5" |
| // adjustment. |
| bias := transformRect(&d2s, &adr).Min |
| bias.X-- |
| bias.Y-- |
| d2s[2] -= float64(bias.X) |
| d2s[5] -= float64(bias.Y) |
| // Make adr relative to dr.Min. |
| adr = adr.Sub(dr.Min) |
| |
| if u, ok := src.(*image.Uniform); ok && o.DstMask != nil && o.SrcMask != nil && sr.In(src.Bounds()) { |
| transform_Uniform(dst, dr, adr, &d2s, u, sr, bias, op) |
| return |
| } |
| |
| xscale := abs(d2s[0]) |
| if s := abs(d2s[1]); xscale < s { |
| xscale = s |
| } |
| yscale := abs(d2s[3]) |
| if s := abs(d2s[4]); yscale < s { |
| yscale = s |
| } |
| |
| // sr is the source pixels. If it extends beyond the src bounds, |
| // we cannot use the type-specific fast paths, as they access |
| // the Pix fields directly without bounds checking. |
| // |
| // Similarly, the fast paths assume that the masks are nil. |
| if o.DstMask != nil || o.SrcMask != nil || !sr.In(src.Bounds()) { |
| switch op { |
| case Over: |
| q.transform_Image_Image_Over(dst, dr, adr, &d2s, src, sr, bias, xscale, yscale, &o) |
| case Src: |
| q.transform_Image_Image_Src(dst, dr, adr, &d2s, src, sr, bias, xscale, yscale, &o) |
| } |
| } else { |
| switch op { |
| case Over: |
| switch dst := dst.(type) { |
| case *image.RGBA: |
| switch src := src.(type) { |
| case *image.NRGBA: |
| q.transform_RGBA_NRGBA_Over(dst, dr, adr, &d2s, src, sr, bias, xscale, yscale, &o) |
| case *image.RGBA: |
| q.transform_RGBA_RGBA_Over(dst, dr, adr, &d2s, src, sr, bias, xscale, yscale, &o) |
| default: |
| q.transform_RGBA_Image_Over(dst, dr, adr, &d2s, src, sr, bias, xscale, yscale, &o) |
| } |
| default: |
| switch src := src.(type) { |
| default: |
| q.transform_Image_Image_Over(dst, dr, adr, &d2s, src, sr, bias, xscale, yscale, &o) |
| } |
| } |
| case Src: |
| switch dst := dst.(type) { |
| case *image.RGBA: |
| switch src := src.(type) { |
| case *image.Gray: |
| q.transform_RGBA_Gray_Src(dst, dr, adr, &d2s, src, sr, bias, xscale, yscale, &o) |
| case *image.NRGBA: |
| q.transform_RGBA_NRGBA_Src(dst, dr, adr, &d2s, src, sr, bias, xscale, yscale, &o) |
| case *image.RGBA: |
| q.transform_RGBA_RGBA_Src(dst, dr, adr, &d2s, src, sr, bias, xscale, yscale, &o) |
| case *image.YCbCr: |
| switch src.SubsampleRatio { |
| default: |
| q.transform_RGBA_Image_Src(dst, dr, adr, &d2s, src, sr, bias, xscale, yscale, &o) |
| case image.YCbCrSubsampleRatio444: |
| q.transform_RGBA_YCbCr444_Src(dst, dr, adr, &d2s, src, sr, bias, xscale, yscale, &o) |
| case image.YCbCrSubsampleRatio422: |
| q.transform_RGBA_YCbCr422_Src(dst, dr, adr, &d2s, src, sr, bias, xscale, yscale, &o) |
| case image.YCbCrSubsampleRatio420: |
| q.transform_RGBA_YCbCr420_Src(dst, dr, adr, &d2s, src, sr, bias, xscale, yscale, &o) |
| case image.YCbCrSubsampleRatio440: |
| q.transform_RGBA_YCbCr440_Src(dst, dr, adr, &d2s, src, sr, bias, xscale, yscale, &o) |
| } |
| default: |
| q.transform_RGBA_Image_Src(dst, dr, adr, &d2s, src, sr, bias, xscale, yscale, &o) |
| } |
| default: |
| switch src := src.(type) { |
| default: |
| q.transform_Image_Image_Src(dst, dr, adr, &d2s, src, sr, bias, xscale, yscale, &o) |
| } |
| } |
| } |
| } |
| } |
| |
| func (z *kernelScaler) scaleX_Gray(tmp [][4]float64, src *image.Gray, sr image.Rectangle, opts *Options) { |
| t := 0 |
| for y := int32(0); y < z.sh; y++ { |
| for _, s := range z.horizontal.sources { |
| var pr float64 |
| for _, c := range z.horizontal.contribs[s.i:s.j] { |
| pi := (sr.Min.Y+int(y)-src.Rect.Min.Y)*src.Stride + (sr.Min.X + int(c.coord) - src.Rect.Min.X) |
| pru := uint32(src.Pix[pi]) * 0x101 |
| pr += float64(pru) * c.weight |
| } |
| pr *= s.invTotalWeightFFFF |
| tmp[t] = [4]float64{ |
| pr, |
| pr, |
| pr, |
| 1, |
| } |
| t++ |
| } |
| } |
| } |
| |
| func (z *kernelScaler) scaleX_NRGBA(tmp [][4]float64, src *image.NRGBA, sr image.Rectangle, opts *Options) { |
| t := 0 |
| for y := int32(0); y < z.sh; y++ { |
| for _, s := range z.horizontal.sources { |
| var pr, pg, pb, pa float64 |
| for _, c := range z.horizontal.contribs[s.i:s.j] { |
| pi := (sr.Min.Y+int(y)-src.Rect.Min.Y)*src.Stride + (sr.Min.X+int(c.coord)-src.Rect.Min.X)*4 |
| pau := uint32(src.Pix[pi+3]) * 0x101 |
| pru := uint32(src.Pix[pi+0]) * pau / 0xff |
| pgu := uint32(src.Pix[pi+1]) * pau / 0xff |
| pbu := uint32(src.Pix[pi+2]) * pau / 0xff |
| pr += float64(pru) * c.weight |
| pg += float64(pgu) * c.weight |
| pb += float64(pbu) * c.weight |
| pa += float64(pau) * c.weight |
| } |
| tmp[t] = [4]float64{ |
| pr * s.invTotalWeightFFFF, |
| pg * s.invTotalWeightFFFF, |
| pb * s.invTotalWeightFFFF, |
| pa * s.invTotalWeightFFFF, |
| } |
| t++ |
| } |
| } |
| } |
| |
| func (z *kernelScaler) scaleX_RGBA(tmp [][4]float64, src *image.RGBA, sr image.Rectangle, opts *Options) { |
| t := 0 |
| for y := int32(0); y < z.sh; y++ { |
| for _, s := range z.horizontal.sources { |
| var pr, pg, pb, pa float64 |
| for _, c := range z.horizontal.contribs[s.i:s.j] { |
| pi := (sr.Min.Y+int(y)-src.Rect.Min.Y)*src.Stride + (sr.Min.X+int(c.coord)-src.Rect.Min.X)*4 |
| pru := uint32(src.Pix[pi+0]) * 0x101 |
| pgu := uint32(src.Pix[pi+1]) * 0x101 |
| pbu := uint32(src.Pix[pi+2]) * 0x101 |
| pau := uint32(src.Pix[pi+3]) * 0x101 |
| pr += float64(pru) * c.weight |
| pg += float64(pgu) * c.weight |
| pb += float64(pbu) * c.weight |
| pa += float64(pau) * c.weight |
| } |
| tmp[t] = [4]float64{ |
| pr * s.invTotalWeightFFFF, |
| pg * s.invTotalWeightFFFF, |
| pb * s.invTotalWeightFFFF, |
| pa * s.invTotalWeightFFFF, |
| } |
| t++ |
| } |
| } |
| } |
| |
| func (z *kernelScaler) scaleX_YCbCr444(tmp [][4]float64, src *image.YCbCr, sr image.Rectangle, opts *Options) { |
| t := 0 |
| for y := int32(0); y < z.sh; y++ { |
| for _, s := range z.horizontal.sources { |
| var pr, pg, pb float64 |
| for _, c := range z.horizontal.contribs[s.i:s.j] { |
| pi := (sr.Min.Y+int(y)-src.Rect.Min.Y)*src.YStride + (sr.Min.X + int(c.coord) - src.Rect.Min.X) |
| pj := (sr.Min.Y+int(y)-src.Rect.Min.Y)*src.CStride + (sr.Min.X + int(c.coord) - src.Rect.Min.X) |
| |
| // This is an inline version of image/color/ycbcr.go's YCbCr.RGBA method. |
| pyy1 := int(src.Y[pi]) * 0x10101 |
| pcb1 := int(src.Cb[pj]) - 128 |
| pcr1 := int(src.Cr[pj]) - 128 |
| pru := (pyy1 + 91881*pcr1) >> 8 |
| pgu := (pyy1 - 22554*pcb1 - 46802*pcr1) >> 8 |
| pbu := (pyy1 + 116130*pcb1) >> 8 |
| if pru < 0 { |
| pru = 0 |
| } else if pru > 0xffff { |
| pru = 0xffff |
| } |
| if pgu < 0 { |
| pgu = 0 |
| } else if pgu > 0xffff { |
| pgu = 0xffff |
| } |
| if pbu < 0 { |
| pbu = 0 |
| } else if pbu > 0xffff { |
| pbu = 0xffff |
| } |
| |
| pr += float64(pru) * c.weight |
| pg += float64(pgu) * c.weight |
| pb += float64(pbu) * c.weight |
| } |
| tmp[t] = [4]float64{ |
| pr * s.invTotalWeightFFFF, |
| pg * s.invTotalWeightFFFF, |
| pb * s.invTotalWeightFFFF, |
| 1, |
| } |
| t++ |
| } |
| } |
| } |
| |
| func (z *kernelScaler) scaleX_YCbCr422(tmp [][4]float64, src *image.YCbCr, sr image.Rectangle, opts *Options) { |
| t := 0 |
| for y := int32(0); y < z.sh; y++ { |
| for _, s := range z.horizontal.sources { |
| var pr, pg, pb float64 |
| for _, c := range z.horizontal.contribs[s.i:s.j] { |
| pi := (sr.Min.Y+int(y)-src.Rect.Min.Y)*src.YStride + (sr.Min.X + int(c.coord) - src.Rect.Min.X) |
| pj := (sr.Min.Y+int(y)-src.Rect.Min.Y)*src.CStride + ((sr.Min.X+int(c.coord))/2 - src.Rect.Min.X/2) |
| |
| // This is an inline version of image/color/ycbcr.go's YCbCr.RGBA method. |
| pyy1 := int(src.Y[pi]) * 0x10101 |
| pcb1 := int(src.Cb[pj]) - 128 |
| pcr1 := int(src.Cr[pj]) - 128 |
| pru := (pyy1 + 91881*pcr1) >> 8 |
| pgu := (pyy1 - 22554*pcb1 - 46802*pcr1) >> 8 |
| pbu := (pyy1 + 116130*pcb1) >> 8 |
| if pru < 0 { |
| pru = 0 |
| } else if pru > 0xffff { |
| pru = 0xffff |
| } |
| if pgu < 0 { |
| pgu = 0 |
| } else if pgu > 0xffff { |
| pgu = 0xffff |
| } |
| if pbu < 0 { |
| pbu = 0 |
| } else if pbu > 0xffff { |
| pbu = 0xffff |
| } |
| |
| pr += float64(pru) * c.weight |
| pg += float64(pgu) * c.weight |
| pb += float64(pbu) * c.weight |
| } |
| tmp[t] = [4]float64{ |
| pr * s.invTotalWeightFFFF, |
| pg * s.invTotalWeightFFFF, |
| pb * s.invTotalWeightFFFF, |
| 1, |
| } |
| t++ |
| } |
| } |
| } |
| |
| func (z *kernelScaler) scaleX_YCbCr420(tmp [][4]float64, src *image.YCbCr, sr image.Rectangle, opts *Options) { |
| t := 0 |
| for y := int32(0); y < z.sh; y++ { |
| for _, s := range z.horizontal.sources { |
| var pr, pg, pb float64 |
| for _, c := range z.horizontal.contribs[s.i:s.j] { |
| pi := (sr.Min.Y+int(y)-src.Rect.Min.Y)*src.YStride + (sr.Min.X + int(c.coord) - src.Rect.Min.X) |
| pj := ((sr.Min.Y+int(y))/2-src.Rect.Min.Y/2)*src.CStride + ((sr.Min.X+int(c.coord))/2 - src.Rect.Min.X/2) |
| |
| // This is an inline version of image/color/ycbcr.go's YCbCr.RGBA method. |
| pyy1 := int(src.Y[pi]) * 0x10101 |
| pcb1 := int(src.Cb[pj]) - 128 |
| pcr1 := int(src.Cr[pj]) - 128 |
| pru := (pyy1 + 91881*pcr1) >> 8 |
| pgu := (pyy1 - 22554*pcb1 - 46802*pcr1) >> 8 |
| pbu := (pyy1 + 116130*pcb1) >> 8 |
| if pru < 0 { |
| pru = 0 |
| } else if pru > 0xffff { |
| pru = 0xffff |
| } |
| if pgu < 0 { |
| pgu = 0 |
| } else if pgu > 0xffff { |
| pgu = 0xffff |
| } |
| if pbu < 0 { |
| pbu = 0 |
| } else if pbu > 0xffff { |
| pbu = 0xffff |
| } |
| |
| pr += float64(pru) * c.weight |
| pg += float64(pgu) * c.weight |
| pb += float64(pbu) * c.weight |
| } |
| tmp[t] = [4]float64{ |
| pr * s.invTotalWeightFFFF, |
| pg * s.invTotalWeightFFFF, |
| pb * s.invTotalWeightFFFF, |
| 1, |
| } |
| t++ |
| } |
| } |
| } |
| |
| func (z *kernelScaler) scaleX_YCbCr440(tmp [][4]float64, src *image.YCbCr, sr image.Rectangle, opts *Options) { |
| t := 0 |
| for y := int32(0); y < z.sh; y++ { |
| for _, s := range z.horizontal.sources { |
| var pr, pg, pb float64 |
| for _, c := range z.horizontal.contribs[s.i:s.j] { |
| pi := (sr.Min.Y+int(y)-src.Rect.Min.Y)*src.YStride + (sr.Min.X + int(c.coord) - src.Rect.Min.X) |
| pj := ((sr.Min.Y+int(y))/2-src.Rect.Min.Y/2)*src.CStride + (sr.Min.X + int(c.coord) - src.Rect.Min.X) |
| |
| // This is an inline version of image/color/ycbcr.go's YCbCr.RGBA method. |
| pyy1 := int(src.Y[pi]) * 0x10101 |
| pcb1 := int(src.Cb[pj]) - 128 |
| pcr1 := int(src.Cr[pj]) - 128 |
| pru := (pyy1 + 91881*pcr1) >> 8 |
| pgu := (pyy1 - 22554*pcb1 - 46802*pcr1) >> 8 |
| pbu := (pyy1 + 116130*pcb1) >> 8 |
| if pru < 0 { |
| pru = 0 |
| } else if pru > 0xffff { |
| pru = 0xffff |
| } |
| if pgu < 0 { |
| pgu = 0 |
| } else if pgu > 0xffff { |
| pgu = 0xffff |
| } |
| if pbu < 0 { |
| pbu = 0 |
| } else if pbu > 0xffff { |
| pbu = 0xffff |
| } |
| |
| pr += float64(pru) * c.weight |
| pg += float64(pgu) * c.weight |
| pb += float64(pbu) * c.weight |
| } |
| tmp[t] = [4]float64{ |
| pr * s.invTotalWeightFFFF, |
| pg * s.invTotalWeightFFFF, |
| pb * s.invTotalWeightFFFF, |
| 1, |
| } |
| t++ |
| } |
| } |
| } |
| |
| func (z *kernelScaler) scaleX_Image(tmp [][4]float64, src image.Image, sr image.Rectangle, opts *Options) { |
| t := 0 |
| srcMask, smp := opts.SrcMask, opts.SrcMaskP |
| for y := int32(0); y < z.sh; y++ { |
| for _, s := range z.horizontal.sources { |
| var pr, pg, pb, pa float64 |
| for _, c := range z.horizontal.contribs[s.i:s.j] { |
| pru, pgu, pbu, pau := src.At(sr.Min.X+int(c.coord), sr.Min.Y+int(y)).RGBA() |
| if srcMask != nil { |
| _, _, _, ma := srcMask.At(smp.X+sr.Min.X+int(c.coord), smp.Y+sr.Min.Y+int(y)).RGBA() |
| pru = pru * ma / 0xffff |
| pgu = pgu * ma / 0xffff |
| pbu = pbu * ma / 0xffff |
| pau = pau * ma / 0xffff |
| } |
| pr += float64(pru) * c.weight |
| pg += float64(pgu) * c.weight |
| pb += float64(pbu) * c.weight |
| pa += float64(pau) * c.weight |
| } |
| tmp[t] = [4]float64{ |
| pr * s.invTotalWeightFFFF, |
| pg * s.invTotalWeightFFFF, |
| pb * s.invTotalWeightFFFF, |
| pa * s.invTotalWeightFFFF, |
| } |
| t++ |
| } |
| } |
| } |
| |
| func (z *kernelScaler) scaleY_RGBA_Over(dst *image.RGBA, dr, adr image.Rectangle, tmp [][4]float64, opts *Options) { |
| for dx := int32(adr.Min.X); dx < int32(adr.Max.X); dx++ { |
| d := (dr.Min.Y+adr.Min.Y-dst.Rect.Min.Y)*dst.Stride + (dr.Min.X+int(dx)-dst.Rect.Min.X)*4 |
| for _, s := range z.vertical.sources[adr.Min.Y:adr.Max.Y] { |
| var pr, pg, pb, pa float64 |
| for _, c := range z.vertical.contribs[s.i:s.j] { |
| p := &tmp[c.coord*z.dw+dx] |
| pr += p[0] * c.weight |
| pg += p[1] * c.weight |
| pb += p[2] * c.weight |
| pa += p[3] * c.weight |
| } |
| |
| if pr > pa { |
| pr = pa |
| } |
| if pg > pa { |
| pg = pa |
| } |
| if pb > pa { |
| pb = pa |
| } |
| |
| pr0 := uint32(ftou(pr * s.invTotalWeight)) |
| pg0 := uint32(ftou(pg * s.invTotalWeight)) |
| pb0 := uint32(ftou(pb * s.invTotalWeight)) |
| pa0 := uint32(ftou(pa * s.invTotalWeight)) |
| pa1 := (0xffff - uint32(pa0)) * 0x101 |
| dst.Pix[d+0] = uint8((uint32(dst.Pix[d+0])*pa1/0xffff + pr0) >> 8) |
| dst.Pix[d+1] = uint8((uint32(dst.Pix[d+1])*pa1/0xffff + pg0) >> 8) |
| dst.Pix[d+2] = uint8((uint32(dst.Pix[d+2])*pa1/0xffff + pb0) >> 8) |
| dst.Pix[d+3] = uint8((uint32(dst.Pix[d+3])*pa1/0xffff + pa0) >> 8) |
| d += dst.Stride |
| } |
| } |
| } |
| |
| func (z *kernelScaler) scaleY_RGBA_Src(dst *image.RGBA, dr, adr image.Rectangle, tmp [][4]float64, opts *Options) { |
| for dx := int32(adr.Min.X); dx < int32(adr.Max.X); dx++ { |
| d := (dr.Min.Y+adr.Min.Y-dst.Rect.Min.Y)*dst.Stride + (dr.Min.X+int(dx)-dst.Rect.Min.X)*4 |
| for _, s := range z.vertical.sources[adr.Min.Y:adr.Max.Y] { |
| var pr, pg, pb, pa float64 |
| for _, c := range z.vertical.contribs[s.i:s.j] { |
| p := &tmp[c.coord*z.dw+dx] |
| pr += p[0] * c.weight |
| pg += p[1] * c.weight |
| pb += p[2] * c.weight |
| pa += p[3] * c.weight |
| } |
| |
| if pr > pa { |
| pr = pa |
| } |
| if pg > pa { |
| pg = pa |
| } |
| if pb > pa { |
| pb = pa |
| } |
| |
| dst.Pix[d+0] = uint8(ftou(pr*s.invTotalWeight) >> 8) |
| dst.Pix[d+1] = uint8(ftou(pg*s.invTotalWeight) >> 8) |
| dst.Pix[d+2] = uint8(ftou(pb*s.invTotalWeight) >> 8) |
| dst.Pix[d+3] = uint8(ftou(pa*s.invTotalWeight) >> 8) |
| d += dst.Stride |
| } |
| } |
| } |
| |
| func (z *kernelScaler) scaleY_Image_Over(dst Image, dr, adr image.Rectangle, tmp [][4]float64, opts *Options) { |
| dstMask, dmp := opts.DstMask, opts.DstMaskP |
| dstColorRGBA64 := &color.RGBA64{} |
| dstColor := color.Color(dstColorRGBA64) |
| for dx := int32(adr.Min.X); dx < int32(adr.Max.X); dx++ { |
| for dy, s := range z.vertical.sources[adr.Min.Y:adr.Max.Y] { |
| var pr, pg, pb, pa float64 |
| for _, c := range z.vertical.contribs[s.i:s.j] { |
| p := &tmp[c.coord*z.dw+dx] |
| pr += p[0] * c.weight |
| pg += p[1] * c.weight |
| pb += p[2] * c.weight |
| pa += p[3] * c.weight |
| } |
| |
| if pr > pa { |
| pr = pa |
| } |
| if pg > pa { |
| pg = pa |
| } |
| if pb > pa { |
| pb = pa |
| } |
| |
| qr, qg, qb, qa := dst.At(dr.Min.X+int(dx), dr.Min.Y+int(adr.Min.Y+dy)).RGBA() |
| pr0 := uint32(ftou(pr * s.invTotalWeight)) |
| pg0 := uint32(ftou(pg * s.invTotalWeight)) |
| pb0 := uint32(ftou(pb * s.invTotalWeight)) |
| pa0 := uint32(ftou(pa * s.invTotalWeight)) |
| if dstMask != nil { |
| _, _, _, ma := dstMask.At(dmp.X+dr.Min.X+int(dx), dmp.Y+dr.Min.Y+int(adr.Min.Y+dy)).RGBA() |
| pr0 = pr0 * ma / 0xffff |
| pg0 = pg0 * ma / 0xffff |
| pb0 = pb0 * ma / 0xffff |
| pa0 = pa0 * ma / 0xffff |
| } |
| pa1 := 0xffff - pa0 |
| dstColorRGBA64.R = uint16(qr*pa1/0xffff + pr0) |
| dstColorRGBA64.G = uint16(qg*pa1/0xffff + pg0) |
| dstColorRGBA64.B = uint16(qb*pa1/0xffff + pb0) |
| dstColorRGBA64.A = uint16(qa*pa1/0xffff + pa0) |
| dst.Set(dr.Min.X+int(dx), dr.Min.Y+int(adr.Min.Y+dy), dstColor) |
| } |
| } |
| } |
| |
| func (z *kernelScaler) scaleY_Image_Src(dst Image, dr, adr image.Rectangle, tmp [][4]float64, opts *Options) { |
| dstMask, dmp := opts.DstMask, opts.DstMaskP |
| dstColorRGBA64 := &color.RGBA64{} |
| dstColor := color.Color(dstColorRGBA64) |
| for dx := int32(adr.Min.X); dx < int32(adr.Max.X); dx++ { |
| for dy, s := range z.vertical.sources[adr.Min.Y:adr.Max.Y] { |
| var pr, pg, pb, pa float64 |
| for _, c := range z.vertical.contribs[s.i:s.j] { |
| p := &tmp[c.coord*z.dw+dx] |
| pr += p[0] * c.weight |
| pg += p[1] * c.weight |
| pb += p[2] * c.weight |
| pa += p[3] * c.weight |
| } |
| |
| if pr > pa { |
| pr = pa |
| } |
| if pg > pa { |
| pg = pa |
| } |
| if pb > pa { |
| pb = pa |
| } |
| |
| if dstMask != nil { |
| qr, qg, qb, qa := dst.At(dr.Min.X+int(dx), dr.Min.Y+int(adr.Min.Y+dy)).RGBA() |
| _, _, _, ma := dstMask.At(dmp.X+dr.Min.X+int(dx), dmp.Y+dr.Min.Y+int(adr.Min.Y+dy)).RGBA() |
| pr := uint32(ftou(pr*s.invTotalWeight)) * ma / 0xffff |
| pg := uint32(ftou(pg*s.invTotalWeight)) * ma / 0xffff |
| pb := uint32(ftou(pb*s.invTotalWeight)) * ma / 0xffff |
| pa := uint32(ftou(pa*s.invTotalWeight)) * ma / 0xffff |
| pa1 := 0xffff - ma |
| dstColorRGBA64.R = uint16(qr*pa1/0xffff + pr) |
| dstColorRGBA64.G = uint16(qg*pa1/0xffff + pg) |
| dstColorRGBA64.B = uint16(qb*pa1/0xffff + pb) |
| dstColorRGBA64.A = uint16(qa*pa1/0xffff + pa) |
| dst.Set(dr.Min.X+int(dx), dr.Min.Y+int(adr.Min.Y+dy), dstColor) |
| } else { |
| dstColorRGBA64.R = ftou(pr * s.invTotalWeight) |
| dstColorRGBA64.G = ftou(pg * s.invTotalWeight) |
| dstColorRGBA64.B = ftou(pb * s.invTotalWeight) |
| dstColorRGBA64.A = ftou(pa * s.invTotalWeight) |
| dst.Set(dr.Min.X+int(dx), dr.Min.Y+int(adr.Min.Y+dy), dstColor) |
| } |
| } |
| } |
| } |
| |
| func (q *Kernel) transform_RGBA_Gray_Src(dst *image.RGBA, dr, adr image.Rectangle, d2s *f64.Aff3, src *image.Gray, sr image.Rectangle, bias image.Point, xscale, yscale float64, opts *Options) { |
| // When shrinking, broaden the effective kernel support so that we still |
| // visit every source pixel. |
| xHalfWidth, xKernelArgScale := q.Support, 1.0 |
| if xscale > 1 { |
| xHalfWidth *= xscale |
| xKernelArgScale = 1 / xscale |
| } |
| yHalfWidth, yKernelArgScale := q.Support, 1.0 |
| if yscale > 1 { |
| yHalfWidth *= yscale |
| yKernelArgScale = 1 / yscale |
| } |
| |
| xWeights := make([]float64, 1+2*int(math.Ceil(xHalfWidth))) |
| yWeights := make([]float64, 1+2*int(math.Ceil(yHalfWidth))) |
| |
| for dy := int32(adr.Min.Y); dy < int32(adr.Max.Y); dy++ { |
| dyf := float64(dr.Min.Y+int(dy)) + 0.5 |
| d := (dr.Min.Y+int(dy)-dst.Rect.Min.Y)*dst.Stride + (dr.Min.X+adr.Min.X-dst.Rect.Min.X)*4 |
| for dx := int32(adr.Min.X); dx < int32(adr.Max.X); dx, d = dx+1, d+4 { |
| dxf := float64(dr.Min.X+int(dx)) + 0.5 |
| sx := d2s[0]*dxf + d2s[1]*dyf + d2s[2] |
| sy := d2s[3]*dxf + d2s[4]*dyf + d2s[5] |
| if !(image.Point{int(sx) + bias.X, int(sy) + bias.Y}).In(sr) { |
| continue |
| } |
| |
| // TODO: adjust the bias so that we can use int(f) instead |
| // of math.Floor(f) and math.Ceil(f). |
| sx += float64(bias.X) |
| sx -= 0.5 |
| ix := int(math.Floor(sx - xHalfWidth)) |
| if ix < sr.Min.X { |
| ix = sr.Min.X |
| } |
| jx := int(math.Ceil(sx + xHalfWidth)) |
| if jx > sr.Max.X { |
| jx = sr.Max.X |
| } |
| |
| totalXWeight := 0.0 |
| for kx := ix; kx < jx; kx++ { |
| xWeight := 0.0 |
| if t := abs((sx - float64(kx)) * xKernelArgScale); t < q.Support { |
| xWeight = q.At(t) |
| } |
| xWeights[kx-ix] = xWeight |
| totalXWeight += xWeight |
| } |
| for x := range xWeights[:jx-ix] { |
| xWeights[x] /= totalXWeight |
| } |
| |
| sy += float64(bias.Y) |
| sy -= 0.5 |
| iy := int(math.Floor(sy - yHalfWidth)) |
| if iy < sr.Min.Y { |
| iy = sr.Min.Y |
| } |
| jy := int(math.Ceil(sy + yHalfWidth)) |
| if jy > sr.Max.Y { |
| jy = sr.Max.Y |
| } |
| |
| totalYWeight := 0.0 |
| for ky := iy; ky < jy; ky++ { |
| yWeight := 0.0 |
| if t := abs((sy - float64(ky)) * yKernelArgScale); t < q.Support { |
| yWeight = q.At(t) |
| } |
| yWeights[ky-iy] = yWeight |
| totalYWeight += yWeight |
| } |
| for y := range yWeights[:jy-iy] { |
| yWeights[y] /= totalYWeight |
| } |
| |
| var pr float64 |
| for ky := iy; ky < jy; ky++ { |
| if yWeight := yWeights[ky-iy]; yWeight != 0 { |
| for kx := ix; kx < jx; kx++ { |
| if w := xWeights[kx-ix] * yWeight; w != 0 { |
| pi := (ky-src.Rect.Min.Y)*src.Stride + (kx - src.Rect.Min.X) |
| pru := uint32(src.Pix[pi]) * 0x101 |
| pr += float64(pru) * w |
| } |
| } |
| } |
| } |
| out := uint8(fffftou(pr) >> 8) |
| dst.Pix[d+0] = out |
| dst.Pix[d+1] = out |
| dst.Pix[d+2] = out |
| dst.Pix[d+3] = 0xff |
| } |
| } |
| } |
| |
| func (q *Kernel) transform_RGBA_NRGBA_Over(dst *image.RGBA, dr, adr image.Rectangle, d2s *f64.Aff3, src *image.NRGBA, sr image.Rectangle, bias image.Point, xscale, yscale float64, opts *Options) { |
| // When shrinking, broaden the effective kernel support so that we still |
| // visit every source pixel. |
| xHalfWidth, xKernelArgScale := q.Support, 1.0 |
| if xscale > 1 { |
| xHalfWidth *= xscale |
| xKernelArgScale = 1 / xscale |
| } |
| yHalfWidth, yKernelArgScale := q.Support, 1.0 |
| if yscale > 1 { |
| yHalfWidth *= yscale |
| yKernelArgScale = 1 / yscale |
| } |
| |
| xWeights := make([]float64, 1+2*int(math.Ceil(xHalfWidth))) |
| yWeights := make([]float64, 1+2*int(math.Ceil(yHalfWidth))) |
| |
| for dy := int32(adr.Min.Y); dy < int32(adr.Max.Y); dy++ { |
| dyf := float64(dr.Min.Y+int(dy)) + 0.5 |
| d := (dr.Min.Y+int(dy)-dst.Rect.Min.Y)*dst.Stride + (dr.Min.X+adr.Min.X-dst.Rect.Min.X)*4 |
| for dx := int32(adr.Min.X); dx < int32(adr.Max.X); dx, d = dx+1, d+4 { |
| dxf := float64(dr.Min.X+int(dx)) + 0.5 |
| sx := d2s[0]*dxf + d2s[1]*dyf + d2s[2] |
| sy := d2s[3]*dxf + d2s[4]*dyf + d2s[5] |
| if !(image.Point{int(sx) + bias.X, int(sy) + bias.Y}).In(sr) { |
| continue |
| } |
| |
| // TODO: adjust the bias so that we can use int(f) instead |
| // of math.Floor(f) and math.Ceil(f). |
| sx += float64(bias.X) |
| sx -= 0.5 |
| ix := int(math.Floor(sx - xHalfWidth)) |
| if ix < sr.Min.X { |
| ix = sr.Min.X |
| } |
| jx := int(math.Ceil(sx + xHalfWidth)) |
| if jx > sr.Max.X { |
| jx = sr.Max.X |
| } |
| |
| totalXWeight := 0.0 |
| for kx := ix; kx < jx; kx++ { |
| xWeight := 0.0 |
| if t := abs((sx - float64(kx)) * xKernelArgScale); t < q.Support { |
| xWeight = q.At(t) |
| } |
| xWeights[kx-ix] = xWeight |
| totalXWeight += xWeight |
| } |
| for x := range xWeights[:jx-ix] { |
| xWeights[x] /= totalXWeight |
| } |
| |
| sy += float64(bias.Y) |
| sy -= 0.5 |
| iy := int(math.Floor(sy - yHalfWidth)) |
| if iy < sr.Min.Y { |
| iy = sr.Min.Y |
| } |
| jy := int(math.Ceil(sy + yHalfWidth)) |
| if jy > sr.Max.Y { |
| jy = sr.Max.Y |
| } |
| |
| totalYWeight := 0.0 |
| for ky := iy; ky < jy; ky++ { |
| yWeight := 0.0 |
| if t := abs((sy - float64(ky)) * yKernelArgScale); t < q.Support { |
| yWeight = q.At(t) |
| } |
| yWeights[ky-iy] = yWeight |
| totalYWeight += yWeight |
| } |
| for y := range yWeights[:jy-iy] { |
| yWeights[y] /= totalYWeight |
| } |
| |
| var pr, pg, pb, pa float64 |
| for ky := iy; ky < jy; ky++ { |
| if yWeight := yWeights[ky-iy]; yWeight != 0 { |
| for kx := ix; kx < jx; kx++ { |
| if w := xWeights[kx-ix] * yWeight; w != 0 { |
| pi := (ky-src.Rect.Min.Y)*src.Stride + (kx-src.Rect.Min.X)*4 |
| pau := uint32(src.Pix[pi+3]) * 0x101 |
| pru := uint32(src.Pix[pi+0]) * pau / 0xff |
| pgu := uint32(src.Pix[pi+1]) * pau / 0xff |
| pbu := uint32(src.Pix[pi+2]) * pau / 0xff |
| pr += float64(pru) * w |
| pg += float64(pgu) * w |
| pb += float64(pbu) * w |
| pa += float64(pau) * w |
| } |
| } |
| } |
| } |
| |
| if pr > pa { |
| pr = pa |
| } |
| if pg > pa { |
| pg = pa |
| } |
| if pb > pa { |
| pb = pa |
| } |
| |
| pr0 := uint32(fffftou(pr)) |
| pg0 := uint32(fffftou(pg)) |
| pb0 := uint32(fffftou(pb)) |
| pa0 := uint32(fffftou(pa)) |
| pa1 := (0xffff - uint32(pa0)) * 0x101 |
| dst.Pix[d+0] = uint8((uint32(dst.Pix[d+0])*pa1/0xffff + pr0) >> 8) |
| dst.Pix[d+1] = uint8((uint32(dst.Pix[d+1])*pa1/0xffff + pg0) >> 8) |
| dst.Pix[d+2] = uint8((uint32(dst.Pix[d+2])*pa1/0xffff + pb0) >> 8) |
| dst.Pix[d+3] = uint8((uint32(dst.Pix[d+3])*pa1/0xffff + pa0) >> 8) |
| } |
| } |
| } |
| |
| func (q *Kernel) transform_RGBA_NRGBA_Src(dst *image.RGBA, dr, adr image.Rectangle, d2s *f64.Aff3, src *image.NRGBA, sr image.Rectangle, bias image.Point, xscale, yscale float64, opts *Options) { |
| // When shrinking, broaden the effective kernel support so that we still |
| // visit every source pixel. |
| xHalfWidth, xKernelArgScale := q.Support, 1.0 |
| if xscale > 1 { |
| xHalfWidth *= xscale |
| xKernelArgScale = 1 / xscale |
| } |
| yHalfWidth, yKernelArgScale := q.Support, 1.0 |
| if yscale > 1 { |
| yHalfWidth *= yscale |
| yKernelArgScale = 1 / yscale |
| } |
| |
| xWeights := make([]float64, 1+2*int(math.Ceil(xHalfWidth))) |
| yWeights := make([]float64, 1+2*int(math.Ceil(yHalfWidth))) |
| |
| for dy := int32(adr.Min.Y); dy < int32(adr.Max.Y); dy++ { |
| dyf := float64(dr.Min.Y+int(dy)) + 0.5 |
| d := (dr.Min.Y+int(dy)-dst.Rect.Min.Y)*dst.Stride + (dr.Min.X+adr.Min.X-dst.Rect.Min.X)*4 |
| for dx := int32(adr.Min.X); dx < int32(adr.Max.X); dx, d = dx+1, d+4 { |
| dxf := float64(dr.Min.X+int(dx)) + 0.5 |
| sx := d2s[0]*dxf + d2s[1]*dyf + d2s[2] |
| sy := d2s[3]*dxf + d2s[4]*dyf + d2s[5] |
| if !(image.Point{int(sx) + bias.X, int(sy) + bias.Y}).In(sr) { |
| continue |
| } |
| |
| // TODO: adjust the bias so that we can use int(f) instead |
| // of math.Floor(f) and math.Ceil(f). |
| sx += float64(bias.X) |
| sx -= 0.5 |
| ix := int(math.Floor(sx - xHalfWidth)) |
| if ix < sr.Min.X { |
| ix = sr.Min.X |
| } |
| jx := int(math.Ceil(sx + xHalfWidth)) |
| if jx > sr.Max.X { |
| jx = sr.Max.X |
| } |
| |
| totalXWeight := 0.0 |
| for kx := ix; kx < jx; kx++ { |
| xWeight := 0.0 |
| if t := abs((sx - float64(kx)) * xKernelArgScale); t < q.Support { |
| xWeight = q.At(t) |
| } |
| xWeights[kx-ix] = xWeight |
| totalXWeight += xWeight |
| } |
| for x := range xWeights[:jx-ix] { |
| xWeights[x] /= totalXWeight |
| } |
| |
| sy += float64(bias.Y) |
| sy -= 0.5 |
| iy := int(math.Floor(sy - yHalfWidth)) |
| if iy < sr.Min.Y { |
| iy = sr.Min.Y |
| } |
| jy := int(math.Ceil(sy + yHalfWidth)) |
| if jy > sr.Max.Y { |
| jy = sr.Max.Y |
| } |
| |
| totalYWeight := 0.0 |
| for ky := iy; ky < jy; ky++ { |
| yWeight := 0.0 |
| if t := abs((sy - float64(ky)) * yKernelArgScale); t < q.Support { |
| yWeight = q.At(t) |
| } |
| yWeights[ky-iy] = yWeight |
| totalYWeight += yWeight |
| } |
| for y := range yWeights[:jy-iy] { |
| yWeights[y] /= totalYWeight |
| } |
| |
| var pr, pg, pb, pa float64 |
| for ky := iy; ky < jy; ky++ { |
| if yWeight := yWeights[ky-iy]; yWeight != 0 { |
| for kx := ix; kx < jx; kx++ { |
| if w := xWeights[kx-ix] * yWeight; w != 0 { |
| pi := (ky-src.Rect.Min.Y)*src.Stride + (kx-src.Rect.Min.X)*4 |
| pau := uint32(src.Pix[pi+3]) * 0x101 |
| pru := uint32(src.Pix[pi+0]) * pau / 0xff |
| pgu := uint32(src.Pix[pi+1]) * pau / 0xff |
| pbu := uint32(src.Pix[pi+2]) * pau / 0xff |
| pr += float64(pru) * w |
| pg += float64(pgu) * w |
| pb += float64(pbu) * w |
| pa += float64(pau) * w |
| } |
| } |
| } |
| } |
| |
| if pr > pa { |
| pr = pa |
| } |
| if pg > pa { |
| pg = pa |
| } |
| if pb > pa { |
| pb = pa |
| } |
| |
| dst.Pix[d+0] = uint8(fffftou(pr) >> 8) |
| dst.Pix[d+1] = uint8(fffftou(pg) >> 8) |
| dst.Pix[d+2] = uint8(fffftou(pb) >> 8) |
| dst.Pix[d+3] = uint8(fffftou(pa) >> 8) |
| } |
| } |
| } |
| |
| func (q *Kernel) transform_RGBA_RGBA_Over(dst *image.RGBA, dr, adr image.Rectangle, d2s *f64.Aff3, src *image.RGBA, sr image.Rectangle, bias image.Point, xscale, yscale float64, opts *Options) { |
| // When shrinking, broaden the effective kernel support so that we still |
| // visit every source pixel. |
| xHalfWidth, xKernelArgScale := q.Support, 1.0 |
| if xscale > 1 { |
| xHalfWidth *= xscale |
| xKernelArgScale = 1 / xscale |
| } |
| yHalfWidth, yKernelArgScale := q.Support, 1.0 |
| if yscale > 1 { |
| yHalfWidth *= yscale |
| yKernelArgScale = 1 / yscale |
| } |
| |
| xWeights := make([]float64, 1+2*int(math.Ceil(xHalfWidth))) |
| yWeights := make([]float64, 1+2*int(math.Ceil(yHalfWidth))) |
| |
| for dy := int32(adr.Min.Y); dy < int32(adr.Max.Y); dy++ { |
| dyf := float64(dr.Min.Y+int(dy)) + 0.5 |
| d := (dr.Min.Y+int(dy)-dst.Rect.Min.Y)*dst.Stride + (dr.Min.X+adr.Min.X-dst.Rect.Min.X)*4 |
| for dx := int32(adr.Min.X); dx < int32(adr.Max.X); dx, d = dx+1, d+4 { |
| dxf := float64(dr.Min.X+int(dx)) + 0.5 |
| sx := d2s[0]*dxf + d2s[1]*dyf + d2s[2] |
| sy := d2s[3]*dxf + d2s[4]*dyf + d2s[5] |
| if !(image.Point{int(sx) + bias.X, int(sy) + bias.Y}).In(sr) { |
| continue |
| } |
| |
| // TODO: adjust the bias so that we can use int(f) instead |
| // of math.Floor(f) and math.Ceil(f). |
| sx += float64(bias.X) |
| sx -= 0.5 |
| ix := int(math.Floor(sx - xHalfWidth)) |
| if ix < sr.Min.X { |
| ix = sr.Min.X |
| } |
| jx := int(math.Ceil(sx + xHalfWidth)) |
| if jx > sr.Max.X { |
| jx = sr.Max.X |
| } |
| |
| totalXWeight := 0.0 |
| for kx := ix; kx < jx; kx++ { |
| xWeight := 0.0 |
| if t := abs((sx - float64(kx)) * xKernelArgScale); t < q.Support { |
| xWeight = q.At(t) |
| } |
| xWeights[kx-ix] = xWeight |
| totalXWeight += xWeight |
| } |
| for x := range xWeights[:jx-ix] { |
| xWeights[x] /= totalXWeight |
| } |
| |
| sy += float64(bias.Y) |
| sy -= 0.5 |
| iy := int(math.Floor(sy - yHalfWidth)) |
| if iy < sr.Min.Y { |
| iy = sr.Min.Y |
| } |
| jy := int(math.Ceil(sy + yHalfWidth)) |
| if jy > sr.Max.Y { |
| jy = sr.Max.Y |
| } |
| |
| totalYWeight := 0.0 |
| for ky := iy; ky < jy; ky++ { |
| yWeight := 0.0 |
| if t := abs((sy - float64(ky)) * yKernelArgScale); t < q.Support { |
| yWeight = q.At(t) |
| } |
| yWeights[ky-iy] = yWeight |
| totalYWeight += yWeight |
| } |
| for y := range yWeights[:jy-iy] { |
| yWeights[y] /= totalYWeight |
| } |
| |
| var pr, pg, pb, pa float64 |
| for ky := iy; ky < jy; ky++ { |
| if yWeight := yWeights[ky-iy]; yWeight != 0 { |
| for kx := ix; kx < jx; kx++ { |
| if w := xWeights[kx-ix] * yWeight; w != 0 { |
| pi := (ky-src.Rect.Min.Y)*src.Stride + (kx-src.Rect.Min.X)*4 |
| pru := uint32(src.Pix[pi+0]) * 0x101 |
| pgu := uint32(src.Pix[pi+1]) * 0x101 |
| pbu := uint32(src.Pix[pi+2]) * 0x101 |
| pau := uint32(src.Pix[pi+3]) * 0x101 |
| pr += float64(pru) * w |
| pg += float64(pgu) * w |
| pb += float64(pbu) * w |
| pa += float64(pau) * w |
| } |
| } |
| } |
| } |
| |
| if pr > pa { |
| pr = pa |
| } |
| if pg > pa { |
| pg = pa |
| } |
| if pb > pa { |
| pb = pa |
| } |
| |
| pr0 := uint32(fffftou(pr)) |
| pg0 := uint32(fffftou(pg)) |
| pb0 := uint32(fffftou(pb)) |
| pa0 := uint32(fffftou(pa)) |
| pa1 := (0xffff - uint32(pa0)) * 0x101 |
| dst.Pix[d+0] = uint8((uint32(dst.Pix[d+0])*pa1/0xffff + pr0) >> 8) |
| dst.Pix[d+1] = uint8((uint32(dst.Pix[d+1])*pa1/0xffff + pg0) >> 8) |
| dst.Pix[d+2] = uint8((uint32(dst.Pix[d+2])*pa1/0xffff + pb0) >> 8) |
| dst.Pix[d+3] = uint8((uint32(dst.Pix[d+3])*pa1/0xffff + pa0) >> 8) |
| } |
| } |
| } |
| |
| func (q *Kernel) transform_RGBA_RGBA_Src(dst *image.RGBA, dr, adr image.Rectangle, d2s *f64.Aff3, src *image.RGBA, sr image.Rectangle, bias image.Point, xscale, yscale float64, opts *Options) { |
| // When shrinking, broaden the effective kernel support so that we still |
| // visit every source pixel. |
| xHalfWidth, xKernelArgScale := q.Support, 1.0 |
| if xscale > 1 { |
| xHalfWidth *= xscale |
| xKernelArgScale = 1 / xscale |
| } |
| yHalfWidth, yKernelArgScale := q.Support, 1.0 |
| if yscale > 1 { |
| yHalfWidth *= yscale |
| yKernelArgScale = 1 / yscale |
| } |
| |
| xWeights := make([]float64, 1+2*int(math.Ceil(xHalfWidth))) |
| yWeights := make([]float64, 1+2*int(math.Ceil(yHalfWidth))) |
| |
| for dy := int32(adr.Min.Y); dy < int32(adr.Max.Y); dy++ { |
| dyf := float64(dr.Min.Y+int(dy)) + 0.5 |
| d := (dr.Min.Y+int(dy)-dst.Rect.Min.Y)*dst.Stride + (dr.Min.X+adr.Min.X-dst.Rect.Min.X)*4 |
| for dx := int32(adr.Min.X); dx < int32(adr.Max.X); dx, d = dx+1, d+4 { |
| dxf := float64(dr.Min.X+int(dx)) + 0.5 |
| sx := d2s[0]*dxf + d2s[1]*dyf + d2s[2] |
| sy := d2s[3]*dxf + d2s[4]*dyf + d2s[5] |
| if !(image.Point{int(sx) + bias.X, int(sy) + bias.Y}).In(sr) { |
| continue |
| } |
| |
| // TODO: adjust the bias so that we can use int(f) instead |
| // of math.Floor(f) and math.Ceil(f). |
| sx += float64(bias.X) |
| sx -= 0.5 |
| ix := int(math.Floor(sx - xHalfWidth)) |
| if ix < sr.Min.X { |
| ix = sr.Min.X |
| } |
| jx := int(math.Ceil(sx + xHalfWidth)) |
| if jx > sr.Max.X { |
| jx = sr.Max.X |
| } |
| |
| totalXWeight := 0.0 |
| for kx := ix; kx < jx; kx++ { |
| xWeight := 0.0 |
| if t := abs((sx - float64(kx)) * xKernelArgScale); t < q.Support { |
| xWeight = q.At(t) |
| } |
| xWeights[kx-ix] = xWeight |
| totalXWeight += xWeight |
| } |
| for x := range xWeights[:jx-ix] { |
| xWeights[x] /= totalXWeight |
| } |
| |
| sy += float64(bias.Y) |
| sy -= 0.5 |
| iy := int(math.Floor(sy - yHalfWidth)) |
| if iy < sr.Min.Y { |
| iy = sr.Min.Y |
| } |
| jy := int(math.Ceil(sy + yHalfWidth)) |
| if jy > sr.Max.Y { |
| jy = sr.Max.Y |
| } |
| |
| totalYWeight := 0.0 |
| for ky := iy; ky < jy; ky++ { |
| yWeight := 0.0 |
| if t := abs((sy - float64(ky)) * yKernelArgScale); t < q.Support { |
| yWeight = q.At(t) |
| } |
| yWeights[ky-iy] = yWeight |
| totalYWeight += yWeight |
| } |
| for y := range yWeights[:jy-iy] { |
| yWeights[y] /= totalYWeight |
| } |
| |
| var pr, pg, pb, pa float64 |
| for ky := iy; ky < jy; ky++ { |
| if yWeight := yWeights[ky-iy]; yWeight != 0 { |
| for kx := ix; kx < jx; kx++ { |
| if w := xWeights[kx-ix] * yWeight; w != 0 { |
| pi := (ky-src.Rect.Min.Y)*src.Stride + (kx-src.Rect.Min.X)*4 |
| pru := uint32(src.Pix[pi+0]) * 0x101 |
| pgu := uint32(src.Pix[pi+1]) * 0x101 |
| pbu := uint32(src.Pix[pi+2]) * 0x101 |
| pau := uint32(src.Pix[pi+3]) * 0x101 |
| pr += float64(pru) * w |
| pg += float64(pgu) * w |
| pb += float64(pbu) * w |
| pa += float64(pau) * w |
| } |
| } |
| } |
| } |
| |
| if pr > pa { |
| pr = pa |
| } |
| if pg > pa { |
| pg = pa |
| } |
| if pb > pa { |
| pb = pa |
| } |
| |
| dst.Pix[d+0] = uint8(fffftou(pr) >> 8) |
| dst.Pix[d+1] = uint8(fffftou(pg) >> 8) |
| dst.Pix[d+2] = uint8(fffftou(pb) >> 8) |
| dst.Pix[d+3] = uint8(fffftou(pa) >> 8) |
| } |
| } |
| } |
| |
| func (q *Kernel) transform_RGBA_YCbCr444_Src(dst *image.RGBA, dr, adr image.Rectangle, d2s *f64.Aff3, src *image.YCbCr, sr image.Rectangle, bias image.Point, xscale, yscale float64, opts *Options) { |
| // When shrinking, broaden the effective kernel support so that we still |
| // visit every source pixel. |
| xHalfWidth, xKernelArgScale := q.Support, 1.0 |
| if xscale > 1 { |
| xHalfWidth *= xscale |
| xKernelArgScale = 1 / xscale |
| } |
| yHalfWidth, yKernelArgScale := q.Support, 1.0 |
| if yscale > 1 { |
| yHalfWidth *= yscale |
| yKernelArgScale = 1 / yscale |
| } |
| |
| xWeights := make([]float64, 1+2*int(math.Ceil(xHalfWidth))) |
| yWeights := make([]float64, 1+2*int(math.Ceil(yHalfWidth))) |
| |
| for dy := int32(adr.Min.Y); dy < int32(adr.Max.Y); dy++ { |
| dyf := float64(dr.Min.Y+int(dy)) + 0.5 |
| d := (dr.Min.Y+int(dy)-dst.Rect.Min.Y)*dst.Stride + (dr.Min.X+adr.Min.X-dst.Rect.Min.X)*4 |
| for dx := int32(adr.Min.X); dx < int32(adr.Max.X); dx, d = dx+1, d+4 { |
| dxf := float64(dr.Min.X+int(dx)) + 0.5 |
| sx := d2s[0]*dxf + d2s[1]*dyf + d2s[2] |
| sy := d2s[3]*dxf + d2s[4]*dyf + d2s[5] |
| if !(image.Point{int(sx) + bias.X, int(sy) + bias.Y}).In(sr) { |
| continue |
| } |
| |
| // TODO: adjust the bias so that we can use int(f) instead |
| // of math.Floor(f) and math.Ceil(f). |
| sx += float64(bias.X) |
| sx -= 0.5 |
| ix := int(math.Floor(sx - xHalfWidth)) |
| if ix < sr.Min.X { |
| ix = sr.Min.X |
| } |
| jx := int(math.Ceil(sx + xHalfWidth)) |
| if jx > sr.Max.X { |
| jx = sr.Max.X |
| } |
| |
| totalXWeight := 0.0 |
| for kx := ix; kx < jx; kx++ { |
| xWeight := 0.0 |
| if t := abs((sx - float64(kx)) * xKernelArgScale); t < q.Support { |
| xWeight = q.At(t) |
| } |
| xWeights[kx-ix] = xWeight |
| totalXWeight += xWeight |
| } |
| for x := range xWeights[:jx-ix] { |
| xWeights[x] /= totalXWeight |
| } |
| |
| sy += float64(bias.Y) |
| sy -= 0.5 |
| iy := int(math.Floor(sy - yHalfWidth)) |
| if iy < sr.Min.Y { |
| iy = sr.Min.Y |
| } |
| jy := int(math.Ceil(sy + yHalfWidth)) |
| if jy > sr.Max.Y { |
| jy = sr.Max.Y |
| } |
| |
| totalYWeight := 0.0 |
| for ky := iy; ky < jy; ky++ { |
| yWeight := 0.0 |
| if t := abs((sy - float64(ky)) * yKernelArgScale); t < q.Support { |
| yWeight = q.At(t) |
| } |
| yWeights[ky-iy] = yWeight |
| totalYWeight += yWeight |
| } |
| for y := range yWeights[:jy-iy] { |
| yWeights[y] /= totalYWeight |
| } |
| |
| var pr, pg, pb float64 |
| for ky := iy; ky < jy; ky++ { |
| if yWeight := yWeights[ky-iy]; yWeight != 0 { |
| for kx := ix; kx < jx; kx++ { |
| if w := xWeights[kx-ix] * yWeight; w != 0 { |
| pi := (ky-src.Rect.Min.Y)*src.YStride + (kx - src.Rect.Min.X) |
| pj := (ky-src.Rect.Min.Y)*src.CStride + (kx - src.Rect.Min.X) |
| |
| // This is an inline version of image/color/ycbcr.go's YCbCr.RGBA method. |
| pyy1 := int(src.Y[pi]) * 0x10101 |
| pcb1 := int(src.Cb[pj]) - 128 |
| pcr1 := int(src.Cr[pj]) - 128 |
| pru := (pyy1 + 91881*pcr1) >> 8 |
| pgu := (pyy1 - 22554*pcb1 - 46802*pcr1) >> 8 |
| pbu := (pyy1 + 116130*pcb1) >> 8 |
| if pru < 0 { |
| pru = 0 |
| } else if pru > 0xffff { |
| pru = 0xffff |
| } |
| if pgu < 0 { |
| pgu = 0 |
| } else if pgu > 0xffff { |
| pgu = 0xffff |
| } |
| if pbu < 0 { |
| pbu = 0 |
| } else if pbu > 0xffff { |
| pbu = 0xffff |
| } |
| |
| pr += float64(pru) * w |
| pg += float64(pgu) * w |
| pb += float64(pbu) * w |
| } |
| } |
| } |
| } |
| dst.Pix[d+0] = uint8(fffftou(pr) >> 8) |
| dst.Pix[d+1] = uint8(fffftou(pg) >> 8) |
| dst.Pix[d+2] = uint8(fffftou(pb) >> 8) |
| dst.Pix[d+3] = 0xff |
| } |
| } |
| } |
| |
| func (q *Kernel) transform_RGBA_YCbCr422_Src(dst *image.RGBA, dr, adr image.Rectangle, d2s *f64.Aff3, src *image.YCbCr, sr image.Rectangle, bias image.Point, xscale, yscale float64, opts *Options) { |
| // When shrinking, broaden the effective kernel support so that we still |
| // visit every source pixel. |
| xHalfWidth, xKernelArgScale := q.Support, 1.0 |
| if xscale > 1 { |
| xHalfWidth *= xscale |
| xKernelArgScale = 1 / xscale |
| } |
| yHalfWidth, yKernelArgScale := q.Support, 1.0 |
| if yscale > 1 { |
| yHalfWidth *= yscale |
| yKernelArgScale = 1 / yscale |
| } |
| |
| xWeights := make([]float64, 1+2*int(math.Ceil(xHalfWidth))) |
| yWeights := make([]float64, 1+2*int(math.Ceil(yHalfWidth))) |
| |
| for dy := int32(adr.Min.Y); dy < int32(adr.Max.Y); dy++ { |
| dyf := float64(dr.Min.Y+int(dy)) + 0.5 |
| d := (dr.Min.Y+int(dy)-dst.Rect.Min.Y)*dst.Stride + (dr.Min.X+adr.Min.X-dst.Rect.Min.X)*4 |
| for dx := int32(adr.Min.X); dx < int32(adr.Max.X); dx, d = dx+1, d+4 { |
| dxf := float64(dr.Min.X+int(dx)) + 0.5 |
| sx := d2s[0]*dxf + d2s[1]*dyf + d2s[2] |
| sy := d2s[3]*dxf + d2s[4]*dyf + d2s[5] |
| if !(image.Point{int(sx) + bias.X, int(sy) + bias.Y}).In(sr) { |
| continue |
| } |
| |
| // TODO: adjust the bias so that we can use int(f) instead |
| // of math.Floor(f) and math.Ceil(f). |
| sx += float64(bias.X) |
| sx -= 0.5 |
| ix := int(math.Floor(sx - xHalfWidth)) |
| if ix < sr.Min.X { |
| ix = sr.Min.X |
| } |
| jx := int(math.Ceil(sx + xHalfWidth)) |
| if jx > sr.Max.X { |
| jx = sr.Max.X |
| } |
| |
| totalXWeight := 0.0 |
| for kx := ix; kx < jx; kx++ { |
| xWeight := 0.0 |
| if t := abs((sx - float64(kx)) * xKernelArgScale); t < q.Support { |
| xWeight = q.At(t) |
| } |
| xWeights[kx-ix] = xWeight |
| totalXWeight += xWeight |
| } |
| for x := range xWeights[:jx-ix] { |
| xWeights[x] /= totalXWeight |
| } |
| |
| sy += float64(bias.Y) |
| sy -= 0.5 |
| iy := int(math.Floor(sy - yHalfWidth)) |
| if iy < sr.Min.Y { |
| iy = sr.Min.Y |
| } |
| jy := int(math.Ceil(sy + yHalfWidth)) |
| if jy > sr.Max.Y { |
| jy = sr.Max.Y |
| } |
| |
| totalYWeight := 0.0 |
| for ky := iy; ky < jy; ky++ { |
| yWeight := 0.0 |
| if t := abs((sy - float64(ky)) * yKernelArgScale); t < q.Support { |
| yWeight = q.At(t) |
| } |
| yWeights[ky-iy] = yWeight |
| totalYWeight += yWeight |
| } |
| for y := range yWeights[:jy-iy] { |
| yWeights[y] /= totalYWeight |
| } |
| |
| var pr, pg, pb float64 |
| for ky := iy; ky < jy; ky++ { |
| if yWeight := yWeights[ky-iy]; yWeight != 0 { |
| for kx := ix; kx < jx; kx++ { |
| if w := xWeights[kx-ix] * yWeight; w != 0 { |
| pi := (ky-src.Rect.Min.Y)*src.YStride + (kx - src.Rect.Min.X) |
| pj := (ky-src.Rect.Min.Y)*src.CStride + ((kx)/2 - src.Rect.Min.X/2) |
| |
| // This is an inline version of image/color/ycbcr.go's YCbCr.RGBA method. |
| pyy1 := int(src.Y[pi]) * 0x10101 |
| pcb1 := int(src.Cb[pj]) - 128 |
| pcr1 := int(src.Cr[pj]) - 128 |
| pru := (pyy1 + 91881*pcr1) >> 8 |
| pgu := (pyy1 - 22554*pcb1 - 46802*pcr1) >> 8 |
| pbu := (pyy1 + 116130*pcb1) >> 8 |
| if pru < 0 { |
| pru = 0 |
| } else if pru > 0xffff { |
| pru = 0xffff |
| } |
| if pgu < 0 { |
| pgu = 0 |
| } else if pgu > 0xffff { |
| pgu = 0xffff |
| } |
| if pbu < 0 { |
| pbu = 0 |
| } else if pbu > 0xffff { |
| pbu = 0xffff |
| } |
| |
| pr += float64(pru) * w |
| pg += float64(pgu) * w |
| pb += float64(pbu) * w |
| } |
| } |
| } |
| } |
| dst.Pix[d+0] = uint8(fffftou(pr) >> 8) |
| dst.Pix[d+1] = uint8(fffftou(pg) >> 8) |
| dst.Pix[d+2] = uint8(fffftou(pb) >> 8) |
| dst.Pix[d+3] = 0xff |
| } |
| } |
| } |
| |
| func (q *Kernel) transform_RGBA_YCbCr420_Src(dst *image.RGBA, dr, adr image.Rectangle, d2s *f64.Aff3, src *image.YCbCr, sr image.Rectangle, bias image.Point, xscale, yscale float64, opts *Options) { |
| // When shrinking, broaden the effective kernel support so that we still |
| // visit every source pixel. |
| xHalfWidth, xKernelArgScale := q.Support, 1.0 |
| if xscale > 1 { |
| xHalfWidth *= xscale |
| xKernelArgScale = 1 / xscale |
| } |
| yHalfWidth, yKernelArgScale := q.Support, 1.0 |
| if yscale > 1 { |
| yHalfWidth *= yscale |
| yKernelArgScale = 1 / yscale |
| } |
| |
| xWeights := make([]float64, 1+2*int(math.Ceil(xHalfWidth))) |
| yWeights := make([]float64, 1+2*int(math.Ceil(yHalfWidth))) |
| |
| for dy := int32(adr.Min.Y); dy < int32(adr.Max.Y); dy++ { |
| dyf := float64(dr.Min.Y+int(dy)) + 0.5 |
| d := (dr.Min.Y+int(dy)-dst.Rect.Min.Y)*dst.Stride + (dr.Min.X+adr.Min.X-dst.Rect.Min.X)*4 |
| for dx := int32(adr.Min.X); dx < int32(adr.Max.X); dx, d = dx+1, d+4 { |
| dxf := float64(dr.Min.X+int(dx)) + 0.5 |
| sx := d2s[0]*dxf + d2s[1]*dyf + d2s[2] |
| sy := d2s[3]*dxf + d2s[4]*dyf + d2s[5] |
| if !(image.Point{int(sx) + bias.X, int(sy) + bias.Y}).In(sr) { |
| continue |
| } |
| |
| // TODO: adjust the bias so that we can use int(f) instead |
| // of math.Floor(f) and math.Ceil(f). |
| sx += float64(bias.X) |
| sx -= 0.5 |
| ix := int(math.Floor(sx - xHalfWidth)) |
| if ix < sr.Min.X { |
| ix = sr.Min.X |
| } |
| jx := int(math.Ceil(sx + xHalfWidth)) |
| if jx > sr.Max.X { |
| jx = sr.Max.X |
| } |
| |
| totalXWeight := 0.0 |
| for kx := ix; kx < jx; kx++ { |
| xWeight := 0.0 |
| if t := abs((sx - float64(kx)) * xKernelArgScale); t < q.Support { |
| xWeight = q.At(t) |
| } |
| xWeights[kx-ix] = xWeight |
| totalXWeight += xWeight |
| } |
| for x := range xWeights[:jx-ix] { |
| xWeights[x] /= totalXWeight |
| } |
| |
| sy += float64(bias.Y) |
| sy -= 0.5 |
| iy := int(math.Floor(sy - yHalfWidth)) |
| if iy < sr.Min.Y { |
| iy = sr.Min.Y |
| } |
| jy := int(math.Ceil(sy + yHalfWidth)) |
| if jy > sr.Max.Y { |
| jy = sr.Max.Y |
| } |
| |
| totalYWeight := 0.0 |
| for ky := iy; ky < jy; ky++ { |
| yWeight := 0.0 |
| if t := abs((sy - float64(ky)) * yKernelArgScale); t < q.Support { |
| yWeight = q.At(t) |
| } |
| yWeights[ky-iy] = yWeight |
| totalYWeight += yWeight |
| } |
| for y := range yWeights[:jy-iy] { |
| yWeights[y] /= totalYWeight |
| } |
| |
| var pr, pg, pb float64 |
| for ky := iy; ky < jy; ky++ { |
| if yWeight := yWeights[ky-iy]; yWeight != 0 { |
| for kx := ix; kx < jx; kx++ { |
| if w := xWeights[kx-ix] * yWeight; w != 0 { |
| pi := (ky-src.Rect.Min.Y)*src.YStride + (kx - src.Rect.Min.X) |
| pj := ((ky)/2-src.Rect.Min.Y/2)*src.CStride + ((kx)/2 - src.Rect.Min.X/2) |
| |
| // This is an inline version of image/color/ycbcr.go's YCbCr.RGBA method. |
| pyy1 := int(src.Y[pi]) * 0x10101 |
| pcb1 := int(src.Cb[pj]) - 128 |
| pcr1 := int(src.Cr[pj]) - 128 |
| pru := (pyy1 + 91881*pcr1) >> 8 |
| pgu := (pyy1 - 22554*pcb1 - 46802*pcr1) >> 8 |
| pbu := (pyy1 + 116130*pcb1) >> 8 |
| if pru < 0 { |
| pru = 0 |
| } else if pru > 0xffff { |
| pru = 0xffff |
| } |
| if pgu < 0 { |
| pgu = 0 |
| } else if pgu > 0xffff { |
| pgu = 0xffff |
| } |
| if pbu < 0 { |
| pbu = 0 |
| } else if pbu > 0xffff { |
| pbu = 0xffff |
| } |
| |
| pr += float64(pru) * w |
| pg += float64(pgu) * w |
| pb += float64(pbu) * w |
| } |
| } |
| } |
| } |
| dst.Pix[d+0] = uint8(fffftou(pr) >> 8) |
| dst.Pix[d+1] = uint8(fffftou(pg) >> 8) |
| dst.Pix[d+2] = uint8(fffftou(pb) >> 8) |
| dst.Pix[d+3] = 0xff |
| } |
| } |
| } |
| |
| func (q *Kernel) transform_RGBA_YCbCr440_Src(dst *image.RGBA, dr, adr image.Rectangle, d2s *f64.Aff3, src *image.YCbCr, sr image.Rectangle, bias image.Point, xscale, yscale float64, opts *Options) { |
| // When shrinking, broaden the effective kernel support so that we still |
| // visit every source pixel. |
| xHalfWidth, xKernelArgScale := q.Support, 1.0 |
| if xscale > 1 { |
| xHalfWidth *= xscale |
| xKernelArgScale = 1 / xscale |
| } |
| yHalfWidth, yKernelArgScale := q.Support, 1.0 |
| if yscale > 1 { |
| yHalfWidth *= yscale |
| yKernelArgScale = 1 / yscale |
| } |
| |
| xWeights := make([]float64, 1+2*int(math.Ceil(xHalfWidth))) |
| yWeights := make([]float64, 1+2*int(math.Ceil(yHalfWidth))) |
| |
| for dy := int32(adr.Min.Y); dy < int32(adr.Max.Y); dy++ { |
| dyf := float64(dr.Min.Y+int(dy)) + 0.5 |
| d := (dr.Min.Y+int(dy)-dst.Rect.Min.Y)*dst.Stride + (dr.Min.X+adr.Min.X-dst.Rect.Min.X)*4 |
| for dx := int32(adr.Min.X); dx < int32(adr.Max.X); dx, d = dx+1, d+4 { |
| dxf := float64(dr.Min.X+int(dx)) + 0.5 |
| sx := d2s[0]*dxf + d2s[1]*dyf + d2s[2] |
| sy := d2s[3]*dxf + d2s[4]*dyf + d2s[5] |
| if !(image.Point{int(sx) + bias.X, int(sy) + bias.Y}).In(sr) { |
| continue |
| } |
| |
| // TODO: adjust the bias so that we can use int(f) instead |
| // of math.Floor(f) and math.Ceil(f). |
| sx += float64(bias.X) |
| sx -= 0.5 |
| ix := int(math.Floor(sx - xHalfWidth)) |
| if ix < sr.Min.X { |
| ix = sr.Min.X |
| } |
| jx := int(math.Ceil(sx + xHalfWidth)) |
| if jx > sr.Max.X { |
| jx = sr.Max.X |
| } |
| |
| totalXWeight := 0.0 |
| for kx := ix; kx < jx; kx++ { |
| xWeight := 0.0 |
| if t := abs((sx - float64(kx)) * xKernelArgScale); t < q.Support { |
| xWeight = q.At(t) |
| } |
| xWeights[kx-ix] = xWeight |
| totalXWeight += xWeight |
| } |
| for x := range xWeights[:jx-ix] { |
| xWeights[x] /= totalXWeight |
| } |
| |
| sy += float64(bias.Y) |
| sy -= 0.5 |
| iy := int(math.Floor(sy - yHalfWidth)) |
| if iy < sr.Min.Y { |
| iy = sr.Min.Y |
| } |
| jy := int(math.Ceil(sy + yHalfWidth)) |
| if jy > sr.Max.Y { |
| jy = sr.Max.Y |
| } |
| |
| totalYWeight := 0.0 |
| for ky := iy; ky < jy; ky++ { |
| yWeight := 0.0 |
| if t := abs((sy - float64(ky)) * yKernelArgScale); t < q.Support { |
| yWeight = q.At(t) |
| } |
| yWeights[ky-iy] = yWeight |
| totalYWeight += yWeight |
| } |
| for y := range yWeights[:jy-iy] { |
| yWeights[y] /= totalYWeight |
| } |
| |
| var pr, pg, pb float64 |
| for ky := iy; ky < jy; ky++ { |
| if yWeight := yWeights[ky-iy]; yWeight != 0 { |
| for kx := ix; kx < jx; kx++ { |
| if w := xWeights[kx-ix] * yWeight; w != 0 { |
| pi := (ky-src.Rect.Min.Y)*src.YStride + (kx - src.Rect.Min.X) |
| pj := ((ky)/2-src.Rect.Min.Y/2)*src.CStride + (kx - src.Rect.Min.X) |
| |
| // This is an inline version of image/color/ycbcr.go's YCbCr.RGBA method. |
| pyy1 := int(src.Y[pi]) * 0x10101 |
| pcb1 := int(src.Cb[pj]) - 128 |
| pcr1 := int(src.Cr[pj]) - 128 |
| pru := (pyy1 + 91881*pcr1) >> 8 |
| pgu := (pyy1 - 22554*pcb1 - 46802*pcr1) >> 8 |
| pbu := (pyy1 + 116130*pcb1) >> 8 |
| if pru < 0 { |
| pru = 0 |
| } else if pru > 0xffff { |
| pru = 0xffff |
| } |
| if pgu < 0 { |
| pgu = 0 |
| } else if pgu > 0xffff { |
| pgu = 0xffff |
| } |
| if pbu < 0 { |
| pbu = 0 |
| } else if pbu > 0xffff { |
| pbu = 0xffff |
| } |
| |
| pr += float64(pru) * w |
| pg += float64(pgu) * w |
| pb += float64(pbu) * w |
| } |
| } |
| } |
| } |
| dst.Pix[d+0] = uint8(fffftou(pr) >> 8) |
| dst.Pix[d+1] = uint8(fffftou(pg) >> 8) |
| dst.Pix[d+2] = uint8(fffftou(pb) >> 8) |
| dst.Pix[d+3] = 0xff |
| } |
| } |
| } |
| |
| func (q *Kernel) transform_RGBA_Image_Over(dst *image.RGBA, dr, adr image.Rectangle, d2s *f64.Aff3, src image.Image, sr image.Rectangle, bias image.Point, xscale, yscale float64, opts *Options) { |
| // When shrinking, broaden the effective kernel support so that we still |
| // visit every source pixel. |
| xHalfWidth, xKernelArgScale := q.Support, 1.0 |
| if xscale > 1 { |
| xHalfWidth *= xscale |
| xKernelArgScale = 1 / xscale |
| } |
| yHalfWidth, yKernelArgScale := q.Support, 1.0 |
| if yscale > 1 { |
| yHalfWidth *= yscale |
| yKernelArgScale = 1 / yscale |
| } |
| |
| xWeights := make([]float64, 1+2*int(math.Ceil(xHalfWidth))) |
| yWeights := make([]float64, 1+2*int(math.Ceil(yHalfWidth))) |
| |
| for dy := int32(adr.Min.Y); dy < int32(adr.Max.Y); dy++ { |
| dyf := float64(dr.Min.Y+int(dy)) + 0.5 |
| d := (dr.Min.Y+int(dy)-dst.Rect.Min.Y)*dst.Stride + (dr.Min.X+adr.Min.X-dst.Rect.Min.X)*4 |
| for dx := int32(adr.Min.X); dx < int32(adr.Max.X); dx, d = dx+1, d+4 { |
| dxf := float64(dr.Min.X+int(dx)) + 0.5 |
| sx := d2s[0]*dxf + d2s[1]*dyf + d2s[2] |
| sy := d2s[3]*dxf + d2s[4]*dyf + d2s[5] |
| if !(image.Point{int(sx) + bias.X, int(sy) + bias.Y}).In(sr) { |
| continue |
| } |
| |
| // TODO: adjust the bias so that we can use int(f) instead |
| // of math.Floor(f) and math.Ceil(f). |
| sx += float64(bias.X) |
| sx -= 0.5 |
| ix := int(math.Floor(sx - xHalfWidth)) |
| if ix < sr.Min.X { |
| ix = sr.Min.X |
| } |
| jx := int(math.Ceil(sx + xHalfWidth)) |
| if jx > sr.Max.X { |
| jx = sr.Max.X |
| } |
| |
| totalXWeight := 0.0 |
| for kx := ix; kx < jx; kx++ { |
| xWeight := 0.0 |
| if t := abs((sx - float64(kx)) * xKernelArgScale); t < q.Support { |
| xWeight = q.At(t) |
| } |
| xWeights[kx-ix] = xWeight |
| totalXWeight += xWeight |
| } |
| for x := range xWeights[:jx-ix] { |
| xWeights[x] /= totalXWeight |
| } |
| |
| sy += float64(bias.Y) |
| sy -= 0.5 |
| iy := int(math.Floor(sy - yHalfWidth)) |
| if iy < sr.Min.Y { |
| iy = sr.Min.Y |
| } |
| jy := int(math.Ceil(sy + yHalfWidth)) |
| if jy > sr.Max.Y { |
| jy = sr.Max.Y |
| } |
| |
| totalYWeight := 0.0 |
| for ky := iy; ky < jy; ky++ { |
| yWeight := 0.0 |
| if t := abs((sy - float64(ky)) * yKernelArgScale); t < q.Support { |
| yWeight = q.At(t) |
| } |
| yWeights[ky-iy] = yWeight |
| totalYWeight += yWeight |
| } |
| for y := range yWeights[:jy-iy] { |
| yWeights[y] /= totalYWeight |
| } |
| |
| var pr, pg, pb, pa float64 |
| for ky := iy; ky < jy; ky++ { |
| if yWeight := yWeights[ky-iy]; yWeight != 0 { |
| for kx := ix; kx < jx; kx++ { |
| if w := xWeights[kx-ix] * yWeight; w != 0 { |
| pru, pgu, pbu, pau := src.At(kx, ky).RGBA() |
| pr += float64(pru) * w |
| pg += float64(pgu) * w |
| pb += float64(pbu) * w |
| pa += float64(pau) * w |
| } |
| } |
| } |
| } |
| |
| if pr > pa { |
| pr = pa |
| } |
| if pg > pa { |
| pg = pa |
| } |
| if pb > pa { |
| pb = pa |
| } |
| |
| pr0 := uint32(fffftou(pr)) |
| pg0 := uint32(fffftou(pg)) |
| pb0 := uint32(fffftou(pb)) |
| pa0 := uint32(fffftou(pa)) |
| pa1 := (0xffff - uint32(pa0)) * 0x101 |
| dst.Pix[d+0] = uint8((uint32(dst.Pix[d+0])*pa1/0xffff + pr0) >> 8) |
| dst.Pix[d+1] = uint8((uint32(dst.Pix[d+1])*pa1/0xffff + pg0) >> 8) |
| dst.Pix[d+2] = uint8((uint32(dst.Pix[d+2])*pa1/0xffff + pb0) >> 8) |
| dst.Pix[d+3] = uint8((uint32(dst.Pix[d+3])*pa1/0xffff + pa0) >> 8) |
| } |
| } |
| } |
| |
| func (q *Kernel) transform_RGBA_Image_Src(dst *image.RGBA, dr, adr image.Rectangle, d2s *f64.Aff3, src image.Image, sr image.Rectangle, bias image.Point, xscale, yscale float64, opts *Options) { |
| // When shrinking, broaden the effective kernel support so that we still |
| // visit every source pixel. |
| xHalfWidth, xKernelArgScale := q.Support, 1.0 |
| if xscale > 1 { |
| xHalfWidth *= xscale |
| xKernelArgScale = 1 / xscale |
| } |
| yHalfWidth, yKernelArgScale := q.Support, 1.0 |
| if yscale > 1 { |
| yHalfWidth *= yscale |
| yKernelArgScale = 1 / yscale |
| } |
| |
| xWeights := make([]float64, 1+2*int(math.Ceil(xHalfWidth))) |
| yWeights := make([]float64, 1+2*int(math.Ceil(yHalfWidth))) |
| |
| for dy := int32(adr.Min.Y); dy < int32(adr.Max.Y); dy++ { |
| dyf := float64(dr.Min.Y+int(dy)) + 0.5 |
| d := (dr.Min.Y+int(dy)-dst.Rect.Min.Y)*dst.Stride + (dr.Min.X+adr.Min.X-dst.Rect.Min.X)*4 |
| for dx := int32(adr.Min.X); dx < int32(adr.Max.X); dx, d = dx+1, d+4 { |
| dxf := float64(dr.Min.X+int(dx)) + 0.5 |
| sx := d2s[0]*dxf + d2s[1]*dyf + d2s[2] |
| sy := d2s[3]*dxf + d2s[4]*dyf + d2s[5] |
| if !(image.Point{int(sx) + bias.X, int(sy) + bias.Y}).In(sr) { |
| continue |
| } |
| |
| // TODO: adjust the bias so that we can use int(f) instead |
| // of math.Floor(f) and math.Ceil(f). |
| sx += float64(bias.X) |
| sx -= 0.5 |
| ix := int(math.Floor(sx - xHalfWidth)) |
| if ix < sr.Min.X { |
| ix = sr.Min.X |
| } |
| jx := int(math.Ceil(sx + xHalfWidth)) |
| if jx > sr.Max.X { |
| jx = sr.Max.X |
| } |
| |
| totalXWeight := 0.0 |
| for kx := ix; kx < jx; kx++ { |
| xWeight := 0.0 |
| if t := abs((sx - float64(kx)) * xKernelArgScale); t < q.Support { |
| xWeight = q.At(t) |
| } |
| xWeights[kx-ix] = xWeight |
| totalXWeight += xWeight |
| } |
| for x := range xWeights[:jx-ix] { |
| xWeights[x] /= totalXWeight |
| } |
| |
| sy += float64(bias.Y) |
| sy -= 0.5 |
| iy := int(math.Floor(sy - yHalfWidth)) |
| if iy < sr.Min.Y { |
| iy = sr.Min.Y |
| } |
| jy := int(math.Ceil(sy + yHalfWidth)) |
| if jy > sr.Max.Y { |
| jy = sr.Max.Y |
| } |
| |
| totalYWeight := 0.0 |
| for ky := iy; ky < jy; ky++ { |
| yWeight := 0.0 |
| if t := abs((sy - float64(ky)) * yKernelArgScale); t < q.Support { |
| yWeight = q.At(t) |
| } |
| yWeights[ky-iy] = yWeight |
| totalYWeight += yWeight |
| } |
| for y := range yWeights[:jy-iy] { |
| yWeights[y] /= totalYWeight |
| } |
| |
| var pr, pg, pb, pa float64 |
| for ky := iy; ky < jy; ky++ { |
| if yWeight := yWeights[ky-iy]; yWeight != 0 { |
| for kx := ix; kx < jx; kx++ { |
| if w := xWeights[kx-ix] * yWeight; w != 0 { |
| pru, pgu, pbu, pau := src.At(kx, ky).RGBA() |
| pr += float64(pru) * w |
| pg += float64(pgu) * w |
| pb += float64(pbu) * w |
| pa += float64(pau) * w |
| } |
| } |
| } |
| } |
| |
| if pr > pa { |
| pr = pa |
| } |
| if pg > pa { |
| pg = pa |
| } |
| if pb > pa { |
| pb = pa |
| } |
| |
| dst.Pix[d+0] = uint8(fffftou(pr) >> 8) |
| dst.Pix[d+1] = uint8(fffftou(pg) >> 8) |
| dst.Pix[d+2] = uint8(fffftou(pb) >> 8) |
| dst.Pix[d+3] = uint8(fffftou(pa) >> 8) |
| } |
| } |
| } |
| |
| func (q *Kernel) transform_Image_Image_Over(dst Image, dr, adr image.Rectangle, d2s *f64.Aff3, src image.Image, sr image.Rectangle, bias image.Point, xscale, yscale float64, opts *Options) { |
| // When shrinking, broaden the effective kernel support so that we still |
| // visit every source pixel. |
| xHalfWidth, xKernelArgScale := q.Support, 1.0 |
| if xscale > 1 { |
| xHalfWidth *= xscale |
| xKernelArgScale = 1 / xscale |
| } |
| yHalfWidth, yKernelArgScale := q.Support, 1.0 |
| if yscale > 1 { |
| yHalfWidth *= yscale |
| yKernelArgScale = 1 / yscale |
| } |
| |
| xWeights := make([]float64, 1+2*int(math.Ceil(xHalfWidth))) |
| yWeights := make([]float64, 1+2*int(math.Ceil(yHalfWidth))) |
| |
| srcMask, smp := opts.SrcMask, opts.SrcMaskP |
| dstMask, dmp := opts.DstMask, opts.DstMaskP |
| dstColorRGBA64 := &color.RGBA64{} |
| dstColor := color.Color(dstColorRGBA64) |
| for dy := int32(adr.Min.Y); dy < int32(adr.Max.Y); dy++ { |
| dyf := float64(dr.Min.Y+int(dy)) + 0.5 |
| for dx := int32(adr.Min.X); dx < int32(adr.Max.X); dx++ { |
| dxf := float64(dr.Min.X+int(dx)) + 0.5 |
| sx := d2s[0]*dxf + d2s[1]*dyf + d2s[2] |
| sy := d2s[3]*dxf + d2s[4]*dyf + d2s[5] |
| if !(image.Point{int(sx) + bias.X, int(sy) + bias.Y}).In(sr) { |
| continue |
| } |
| |
| // TODO: adjust the bias so that we can use int(f) instead |
| // of math.Floor(f) and math.Ceil(f). |
| sx += float64(bias.X) |
| sx -= 0.5 |
| ix := int(math.Floor(sx - xHalfWidth)) |
| if ix < sr.Min.X { |
| ix = sr.Min.X |
| } |
| jx := int(math.Ceil(sx + xHalfWidth)) |
| if jx > sr.Max.X { |
| jx = sr.Max.X |
| } |
| |
| totalXWeight := 0.0 |
| for kx := ix; kx < jx; kx++ { |
| xWeight := 0.0 |
| if t := abs((sx - float64(kx)) * xKernelArgScale); t < q.Support { |
| xWeight = q.At(t) |
| } |
| xWeights[kx-ix] = xWeight |
| totalXWeight += xWeight |
| } |
| for x := range xWeights[:jx-ix] { |
| xWeights[x] /= totalXWeight |
| } |
| |
| sy += float64(bias.Y) |
| sy -= 0.5 |
| iy := int(math.Floor(sy - yHalfWidth)) |
| if iy < sr.Min.Y { |
| iy = sr.Min.Y |
| } |
| jy := int(math.Ceil(sy + yHalfWidth)) |
| if jy > sr.Max.Y { |
| jy = sr.Max.Y |
| } |
| |
| totalYWeight := 0.0 |
| for ky := iy; ky < jy; ky++ { |
| yWeight := 0.0 |
| if t := abs((sy - float64(ky)) * yKernelArgScale); t < q.Support { |
| yWeight = q.At(t) |
| } |
| yWeights[ky-iy] = yWeight |
| totalYWeight += yWeight |
| } |
| for y := range yWeights[:jy-iy] { |
| yWeights[y] /= totalYWeight |
| } |
| |
| var pr, pg, pb, pa float64 |
| for ky := iy; ky < jy; ky++ { |
| if yWeight := yWeights[ky-iy]; yWeight != 0 { |
| for kx := ix; kx < jx; kx++ { |
| if w := xWeights[kx-ix] * yWeight; w != 0 { |
| pru, pgu, pbu, pau := src.At(kx, ky).RGBA() |
| if srcMask != nil { |
| _, _, _, ma := srcMask.At(smp.X+kx, smp.Y+ky).RGBA() |
| pru = pru * ma / 0xffff |
| pgu = pgu * ma / 0xffff |
| pbu = pbu * ma / 0xffff |
| pau = pau * ma / 0xffff |
| } |
| pr += float64(pru) * w |
| pg += float64(pgu) * w |
| pb += float64(pbu) * w |
| pa += float64(pau) * w |
| } |
| } |
| } |
| } |
| |
| if pr > pa { |
| pr = pa |
| } |
| if pg > pa { |
| pg = pa |
| } |
| if pb > pa { |
| pb = pa |
| } |
| |
| qr, qg, qb, qa := dst.At(dr.Min.X+int(dx), dr.Min.Y+int(dy)).RGBA() |
| pr0 := uint32(fffftou(pr)) |
| pg0 := uint32(fffftou(pg)) |
| pb0 := uint32(fffftou(pb)) |
| pa0 := uint32(fffftou(pa)) |
| if dstMask != nil { |
| _, _, _, ma := dstMask.At(dmp.X+dr.Min.X+int(dx), dmp.Y+dr.Min.Y+int(dy)).RGBA() |
| pr0 = pr0 * ma / 0xffff |
| pg0 = pg0 * ma / 0xffff |
| pb0 = pb0 * ma / 0xffff |
| pa0 = pa0 * ma / 0xffff |
| } |
| pa1 := 0xffff - pa0 |
| dstColorRGBA64.R = uint16(qr*pa1/0xffff + pr0) |
| dstColorRGBA64.G = uint16(qg*pa1/0xffff + pg0) |
| dstColorRGBA64.B = uint16(qb*pa1/0xffff + pb0) |
| dstColorRGBA64.A = uint16(qa*pa1/0xffff + pa0) |
| dst.Set(dr.Min.X+int(dx), dr.Min.Y+int(dy), dstColor) |
| } |
| } |
| } |
| |
| func (q *Kernel) transform_Image_Image_Src(dst Image, dr, adr image.Rectangle, d2s *f64.Aff3, src image.Image, sr image.Rectangle, bias image.Point, xscale, yscale float64, opts *Options) { |
| // When shrinking, broaden the effective kernel support so that we still |
| // visit every source pixel. |
| xHalfWidth, xKernelArgScale := q.Support, 1.0 |
| if xscale > 1 { |
| xHalfWidth *= xscale |
| xKernelArgScale = 1 / xscale |
| } |
| yHalfWidth, yKernelArgScale := q.Support, 1.0 |
| if yscale > 1 { |
| yHalfWidth *= yscale |
| yKernelArgScale = 1 / yscale |
| } |
| |
| xWeights := make([]float64, 1+2*int(math.Ceil(xHalfWidth))) |
| yWeights := make([]float64, 1+2*int(math.Ceil(yHalfWidth))) |
| |
| srcMask, smp := opts.SrcMask, opts.SrcMaskP |
| dstMask, dmp := opts.DstMask, opts.DstMaskP |
| dstColorRGBA64 := &color.RGBA64{} |
| dstColor := color.Color(dstColorRGBA64) |
| for dy := int32(adr.Min.Y); dy < int32(adr.Max.Y); dy++ { |
| dyf := float64(dr.Min.Y+int(dy)) + 0.5 |
| for dx := int32(adr.Min.X); dx < int32(adr.Max.X); dx++ { |
| dxf := float64(dr.Min.X+int(dx)) + 0.5 |
| sx := d2s[0]*dxf + d2s[1]*dyf + d2s[2] |
| sy := d2s[3]*dxf + d2s[4]*dyf + d2s[5] |
| if !(image.Point{int(sx) + bias.X, int(sy) + bias.Y}).In(sr) { |
| continue |
| } |
| |
| // TODO: adjust the bias so that we can use int(f) instead |
| // of math.Floor(f) and math.Ceil(f). |
| sx += float64(bias.X) |
| sx -= 0.5 |
| ix := int(math.Floor(sx - xHalfWidth)) |
| if ix < sr.Min.X { |
| ix = sr.Min.X |
| } |
| jx := int(math.Ceil(sx + xHalfWidth)) |
| if jx > sr.Max.X { |
| jx = sr.Max.X |
| } |
| |
| totalXWeight := 0.0 |
| for kx := ix; kx < jx; kx++ { |
| xWeight := 0.0 |
| if t := abs((sx - float64(kx)) * xKernelArgScale); t < q.Support { |
| xWeight = q.At(t) |
| } |
| xWeights[kx-ix] = xWeight |
| totalXWeight += xWeight |
| } |
| for x := range xWeights[:jx-ix] { |
| xWeights[x] /= totalXWeight |
| } |
| |
| sy += float64(bias.Y) |
| sy -= 0.5 |
| iy := int(math.Floor(sy - yHalfWidth)) |
| if iy < sr.Min.Y { |
| iy = sr.Min.Y |
| } |
| jy := int(math.Ceil(sy + yHalfWidth)) |
| if jy > sr.Max.Y { |
| jy = sr.Max.Y |
| } |
| |
| totalYWeight := 0.0 |
| for ky := iy; ky < jy; ky++ { |
| yWeight := 0.0 |
| if t := abs((sy - float64(ky)) * yKernelArgScale); t < q.Support { |
| yWeight = q.At(t) |
| } |
| yWeights[ky-iy] = yWeight |
| totalYWeight += yWeight |
| } |
| for y := range yWeights[:jy-iy] { |
| yWeights[y] /= totalYWeight |
| } |
| |
| var pr, pg, pb, pa float64 |
| for ky := iy; ky < jy; ky++ { |
| if yWeight := yWeights[ky-iy]; yWeight != 0 { |
| for kx := ix; kx < jx; kx++ { |
| if w := xWeights[kx-ix] * yWeight; w != 0 { |
| pru, pgu, pbu, pau := src.At(kx, ky).RGBA() |
| if srcMask != nil { |
| _, _, _, ma := srcMask.At(smp.X+kx, smp.Y+ky).RGBA() |
| pru = pru * ma / 0xffff |
| pgu = pgu * ma / 0xffff |
| pbu = pbu * ma / 0xffff |
| pau = pau * ma / 0xffff |
| } |
| pr += float64(pru) * w |
| pg += float64(pgu) * w |
| pb += float64(pbu) * w |
| pa += float64(pau) * w |
| } |
| } |
| } |
| } |
| |
| if pr > pa { |
| pr = pa |
| } |
| if pg > pa { |
| pg = pa |
| } |
| if pb > pa { |
| pb = pa |
| } |
| |
| if dstMask != nil { |
| qr, qg, qb, qa := dst.At(dr.Min.X+int(dx), dr.Min.Y+int(dy)).RGBA() |
| _, _, _, ma := dstMask.At(dmp.X+dr.Min.X+int(dx), dmp.Y+dr.Min.Y+int(dy)).RGBA() |
| pr := uint32(fffftou(pr)) * ma / 0xffff |
| pg := uint32(fffftou(pg)) * ma / 0xffff |
| pb := uint32(fffftou(pb)) * ma / 0xffff |
| pa := uint32(fffftou(pa)) * ma / 0xffff |
| pa1 := 0xffff - ma |
| dstColorRGBA64.R = uint16(qr*pa1/0xffff + pr) |
| dstColorRGBA64.G = uint16(qg*pa1/0xffff + pg) |
| dstColorRGBA64.B = uint16(qb*pa1/0xffff + pb) |
| dstColorRGBA64.A = uint16(qa*pa1/0xffff + pa) |
| dst.Set(dr.Min.X+int(dx), dr.Min.Y+int(dy), dstColor) |
| } else { |
| dstColorRGBA64.R = fffftou(pr) |
| dstColorRGBA64.G = fffftou(pg) |
| dstColorRGBA64.B = fffftou(pb) |
| dstColorRGBA64.A = fffftou(pa) |
| dst.Set(dr.Min.X+int(dx), dr.Min.Y+int(dy), dstColor) |
| } |
| } |
| } |
| } |
