draw: generate code for op == Over.
This change just does the mechanical codegen for the op == Over cases.
The actual compositing operator is still effectively Src. Fixing that,
which is less mechanical, will be a follow-up change.
Change-Id: I87805114d49e7ce7087066187a2f4c722a883c01
Reviewed-on: https://go-review.googlesource.com/8524
Reviewed-by: Rob Pike <r@golang.org>
diff --git a/draw/gen.go b/draw/gen.go
index 3ec18a1..658270e 100644
--- a/draw/gen.go
+++ b/draw/gen.go
@@ -71,7 +71,7 @@
"420",
"440",
}
- ops = []string{"Src"} // TODO: add "Over".
+ ops = []string{"Over", "Src"}
)
func init() {
@@ -273,6 +273,7 @@
}
case "outputu":
+ // TODO: handle op==Over, not just op==Src.
args, _ := splitArgs(suffix)
if len(args) != 3 {
return ""
@@ -345,6 +346,7 @@
}
case "outputf":
+ // TODO: handle op==Over, not just op==Src.
args, _ := splitArgs(suffix)
if len(args) != 5 {
return ""
@@ -749,7 +751,7 @@
if !sr.In(src.Bounds()) {
switch opts.op() {
case Over:
- // TODO: z.scale_Image_Image_Over(dst, dr, adr, src, sr)
+ z.scale_Image_Image_Over(dst, dr, adr, src, sr)
case Src:
z.scale_Image_Image_Src(dst, dr, adr, src, sr)
}
@@ -788,7 +790,7 @@
if !sr.In(src.Bounds()) {
switch opts.op() {
case Over:
- // TODO: z.transform_Image_Image_Over(dst, dr, adr, &d2s, src, sr, bias)
+ z.transform_Image_Image_Over(dst, dr, adr, &d2s, src, sr, bias)
case Src:
z.transform_Image_Image_Src(dst, dr, adr, &d2s, src, sr, bias)
}
@@ -1032,7 +1034,7 @@
if !sr.In(src.Bounds()) {
switch opts.op() {
case Over:
- // TODO: q.transform_Image_Image_Over(dst, dr, adr, &d2s, src, sr, bias, xscale, yscale)
+ q.transform_Image_Image_Over(dst, dr, adr, &d2s, src, sr, bias, xscale, yscale)
case Src:
q.transform_Image_Image_Src(dst, dr, adr, &d2s, src, sr, bias, xscale, yscale)
}
diff --git a/draw/impl.go b/draw/impl.go
index 5f48157..efe65d2 100644
--- a/draw/impl.go
+++ b/draw/impl.go
@@ -22,7 +22,7 @@
if !sr.In(src.Bounds()) {
switch opts.op() {
case Over:
- // TODO: z.scale_Image_Image_Over(dst, dr, adr, src, sr)
+ z.scale_Image_Image_Over(dst, dr, adr, src, sr)
case Src:
z.scale_Image_Image_Src(dst, dr, adr, src, sr)
}
@@ -30,6 +30,38 @@
Draw(dst, dr, src, src.Bounds().Min, opts.op())
} else {
switch opts.op() {
+ case Over:
+ switch dst := dst.(type) {
+ case *image.RGBA:
+ switch src := src.(type) {
+ case *image.Gray:
+ z.scale_RGBA_Gray_Over(dst, dr, adr, src, sr)
+ case *image.NRGBA:
+ z.scale_RGBA_NRGBA_Over(dst, dr, adr, src, sr)
+ case *image.RGBA:
+ z.scale_RGBA_RGBA_Over(dst, dr, adr, src, sr)
+ case *image.YCbCr:
+ switch src.SubsampleRatio {
+ default:
+ z.scale_RGBA_Image_Over(dst, dr, adr, src, sr)
+ case image.YCbCrSubsampleRatio444:
+ z.scale_RGBA_YCbCr444_Over(dst, dr, adr, src, sr)
+ case image.YCbCrSubsampleRatio422:
+ z.scale_RGBA_YCbCr422_Over(dst, dr, adr, src, sr)
+ case image.YCbCrSubsampleRatio420:
+ z.scale_RGBA_YCbCr420_Over(dst, dr, adr, src, sr)
+ case image.YCbCrSubsampleRatio440:
+ z.scale_RGBA_YCbCr440_Over(dst, dr, adr, src, sr)
+ }
+ default:
+ z.scale_RGBA_Image_Over(dst, dr, adr, src, sr)
+ }
+ default:
+ switch src := src.(type) {
+ default:
+ z.scale_Image_Image_Over(dst, dr, adr, src, sr)
+ }
+ }
case Src:
switch dst := dst.(type) {
case *image.RGBA:
@@ -94,7 +126,7 @@
if !sr.In(src.Bounds()) {
switch opts.op() {
case Over:
- // TODO: z.transform_Image_Image_Over(dst, dr, adr, &d2s, src, sr, bias)
+ z.transform_Image_Image_Over(dst, dr, adr, &d2s, src, sr, bias)
case Src:
z.transform_Image_Image_Src(dst, dr, adr, &d2s, src, sr, bias)
}
@@ -102,6 +134,38 @@
transform_Uniform(dst, dr, adr, &d2s, u, sr, bias, opts.op())
} else {
switch opts.op() {
+ case Over:
+ switch dst := dst.(type) {
+ case *image.RGBA:
+ switch src := src.(type) {
+ case *image.Gray:
+ z.transform_RGBA_Gray_Over(dst, dr, adr, &d2s, src, sr, bias)
+ case *image.NRGBA:
+ z.transform_RGBA_NRGBA_Over(dst, dr, adr, &d2s, src, sr, bias)
+ case *image.RGBA:
+ z.transform_RGBA_RGBA_Over(dst, dr, adr, &d2s, src, sr, bias)
+ case *image.YCbCr:
+ switch src.SubsampleRatio {
+ default:
+ z.transform_RGBA_Image_Over(dst, dr, adr, &d2s, src, sr, bias)
+ case image.YCbCrSubsampleRatio444:
+ z.transform_RGBA_YCbCr444_Over(dst, dr, adr, &d2s, src, sr, bias)
+ case image.YCbCrSubsampleRatio422:
+ z.transform_RGBA_YCbCr422_Over(dst, dr, adr, &d2s, src, sr, bias)
+ case image.YCbCrSubsampleRatio420:
+ z.transform_RGBA_YCbCr420_Over(dst, dr, adr, &d2s, src, sr, bias)
+ case image.YCbCrSubsampleRatio440:
+ z.transform_RGBA_YCbCr440_Over(dst, dr, adr, &d2s, src, sr, bias)
+ }
+ default:
+ z.transform_RGBA_Image_Over(dst, dr, adr, &d2s, src, sr, bias)
+ }
+ default:
+ switch src := src.(type) {
+ default:
+ z.transform_Image_Image_Over(dst, dr, adr, &d2s, src, sr, bias)
+ }
+ }
case Src:
switch dst := dst.(type) {
case *image.RGBA:
@@ -138,6 +202,27 @@
}
}
+func (nnInterpolator) scale_RGBA_Gray_Over(dst *image.RGBA, dr, adr image.Rectangle, src *image.Gray, sr image.Rectangle) {
+ 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(uint32(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_Gray_Src(dst *image.RGBA, dr, adr image.Rectangle, src *image.Gray, sr image.Rectangle) {
dw2 := uint64(dr.Dx()) * 2
dh2 := uint64(dr.Dy()) * 2
@@ -159,6 +244,29 @@
}
}
+func (nnInterpolator) scale_RGBA_NRGBA_Over(dst *image.RGBA, dr, adr image.Rectangle, src *image.NRGBA, sr image.Rectangle) {
+ 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(uint32(pr) >> 8)
+ dst.Pix[d+1] = uint8(uint32(pg) >> 8)
+ dst.Pix[d+2] = uint8(uint32(pb) >> 8)
+ dst.Pix[d+3] = uint8(uint32(pa) >> 8)
+ }
+ }
+}
+
func (nnInterpolator) scale_RGBA_NRGBA_Src(dst *image.RGBA, dr, adr image.Rectangle, src *image.NRGBA, sr image.Rectangle) {
dw2 := uint64(dr.Dx()) * 2
dh2 := uint64(dr.Dy()) * 2
@@ -182,6 +290,29 @@
}
}
+func (nnInterpolator) scale_RGBA_RGBA_Over(dst *image.RGBA, dr, adr image.Rectangle, src *image.RGBA, sr image.Rectangle) {
+ 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(uint32(pr) >> 8)
+ dst.Pix[d+1] = uint8(uint32(pg) >> 8)
+ dst.Pix[d+2] = uint8(uint32(pb) >> 8)
+ dst.Pix[d+3] = uint8(uint32(pa) >> 8)
+ }
+ }
+}
+
func (nnInterpolator) scale_RGBA_RGBA_Src(dst *image.RGBA, dr, adr image.Rectangle, src *image.RGBA, sr image.Rectangle) {
dw2 := uint64(dr.Dx()) * 2
dh2 := uint64(dr.Dy()) * 2
@@ -205,6 +336,178 @@
}
}
+func (nnInterpolator) scale_RGBA_YCbCr444_Over(dst *image.RGBA, dr, adr image.Rectangle, src *image.YCbCr, sr image.Rectangle) {
+ 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])<<16 + 1<<15
+ 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(uint32(pr) >> 8)
+ dst.Pix[d+1] = uint8(uint32(pg) >> 8)
+ dst.Pix[d+2] = uint8(uint32(pb) >> 8)
+ dst.Pix[d+3] = 0xff
+ }
+ }
+}
+
+func (nnInterpolator) scale_RGBA_YCbCr422_Over(dst *image.RGBA, dr, adr image.Rectangle, src *image.YCbCr, sr image.Rectangle) {
+ 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])<<16 + 1<<15
+ 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(uint32(pr) >> 8)
+ dst.Pix[d+1] = uint8(uint32(pg) >> 8)
+ dst.Pix[d+2] = uint8(uint32(pb) >> 8)
+ dst.Pix[d+3] = 0xff
+ }
+ }
+}
+
+func (nnInterpolator) scale_RGBA_YCbCr420_Over(dst *image.RGBA, dr, adr image.Rectangle, src *image.YCbCr, sr image.Rectangle) {
+ 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])<<16 + 1<<15
+ 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(uint32(pr) >> 8)
+ dst.Pix[d+1] = uint8(uint32(pg) >> 8)
+ dst.Pix[d+2] = uint8(uint32(pb) >> 8)
+ dst.Pix[d+3] = 0xff
+ }
+ }
+}
+
+func (nnInterpolator) scale_RGBA_YCbCr440_Over(dst *image.RGBA, dr, adr image.Rectangle, src *image.YCbCr, sr image.Rectangle) {
+ 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])<<16 + 1<<15
+ 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(uint32(pr) >> 8)
+ dst.Pix[d+1] = uint8(uint32(pg) >> 8)
+ dst.Pix[d+2] = uint8(uint32(pb) >> 8)
+ dst.Pix[d+3] = 0xff
+ }
+ }
+}
+
func (nnInterpolator) scale_RGBA_YCbCr444_Src(dst *image.RGBA, dr, adr image.Rectangle, src *image.YCbCr, sr image.Rectangle) {
dw2 := uint64(dr.Dx()) * 2
dh2 := uint64(dr.Dy()) * 2
@@ -377,6 +680,25 @@
}
}
+func (nnInterpolator) scale_RGBA_Image_Over(dst *image.RGBA, dr, adr image.Rectangle, src image.Image, sr image.Rectangle) {
+ 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(uint32(pr) >> 8)
+ dst.Pix[d+1] = uint8(uint32(pg) >> 8)
+ dst.Pix[d+2] = uint8(uint32(pb) >> 8)
+ dst.Pix[d+3] = uint8(uint32(pa) >> 8)
+ }
+ }
+}
+
func (nnInterpolator) scale_RGBA_Image_Src(dst *image.RGBA, dr, adr image.Rectangle, src image.Image, sr image.Rectangle) {
dw2 := uint64(dr.Dx()) * 2
dh2 := uint64(dr.Dy()) * 2
@@ -396,6 +718,27 @@
}
}
+func (nnInterpolator) scale_Image_Image_Over(dst Image, dr, adr image.Rectangle, src image.Image, sr image.Rectangle) {
+ dw2 := uint64(dr.Dx()) * 2
+ dh2 := uint64(dr.Dy()) * 2
+ sw := uint64(sr.Dx())
+ sh := uint64(sr.Dy())
+ 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()
+ 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) scale_Image_Image_Src(dst Image, dr, adr image.Rectangle, src image.Image, sr image.Rectangle) {
dw2 := uint64(dr.Dx()) * 2
dh2 := uint64(dr.Dy()) * 2
@@ -417,6 +760,28 @@
}
}
+func (nnInterpolator) transform_RGBA_Gray_Over(dst *image.RGBA, dr, adr image.Rectangle, d2s *f64.Aff3, src *image.Gray, sr image.Rectangle, bias image.Point) {
+ 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(uint32(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_Gray_Src(dst *image.RGBA, dr, adr image.Rectangle, d2s *f64.Aff3, src *image.Gray, sr image.Rectangle, bias image.Point) {
for dy := int32(adr.Min.Y); dy < int32(adr.Max.Y); dy++ {
dyf := float64(dr.Min.Y+int(dy)) + 0.5
@@ -439,6 +804,30 @@
}
}
+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) {
+ 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(uint32(pr) >> 8)
+ dst.Pix[d+1] = uint8(uint32(pg) >> 8)
+ dst.Pix[d+2] = uint8(uint32(pb) >> 8)
+ dst.Pix[d+3] = uint8(uint32(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) {
for dy := int32(adr.Min.Y); dy < int32(adr.Max.Y); dy++ {
dyf := float64(dr.Min.Y+int(dy)) + 0.5
@@ -463,6 +852,30 @@
}
}
+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) {
+ 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(uint32(pr) >> 8)
+ dst.Pix[d+1] = uint8(uint32(pg) >> 8)
+ dst.Pix[d+2] = uint8(uint32(pb) >> 8)
+ dst.Pix[d+3] = uint8(uint32(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) {
for dy := int32(adr.Min.Y); dy < int32(adr.Max.Y); dy++ {
dyf := float64(dr.Min.Y+int(dy)) + 0.5
@@ -487,6 +900,182 @@
}
}
+func (nnInterpolator) transform_RGBA_YCbCr444_Over(dst *image.RGBA, dr, adr image.Rectangle, d2s *f64.Aff3, src *image.YCbCr, sr image.Rectangle, bias image.Point) {
+ 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])<<16 + 1<<15
+ 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(uint32(pr) >> 8)
+ dst.Pix[d+1] = uint8(uint32(pg) >> 8)
+ dst.Pix[d+2] = uint8(uint32(pb) >> 8)
+ dst.Pix[d+3] = 0xff
+ }
+ }
+}
+
+func (nnInterpolator) transform_RGBA_YCbCr422_Over(dst *image.RGBA, dr, adr image.Rectangle, d2s *f64.Aff3, src *image.YCbCr, sr image.Rectangle, bias image.Point) {
+ 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])<<16 + 1<<15
+ 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(uint32(pr) >> 8)
+ dst.Pix[d+1] = uint8(uint32(pg) >> 8)
+ dst.Pix[d+2] = uint8(uint32(pb) >> 8)
+ dst.Pix[d+3] = 0xff
+ }
+ }
+}
+
+func (nnInterpolator) transform_RGBA_YCbCr420_Over(dst *image.RGBA, dr, adr image.Rectangle, d2s *f64.Aff3, src *image.YCbCr, sr image.Rectangle, bias image.Point) {
+ 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])<<16 + 1<<15
+ 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(uint32(pr) >> 8)
+ dst.Pix[d+1] = uint8(uint32(pg) >> 8)
+ dst.Pix[d+2] = uint8(uint32(pb) >> 8)
+ dst.Pix[d+3] = 0xff
+ }
+ }
+}
+
+func (nnInterpolator) transform_RGBA_YCbCr440_Over(dst *image.RGBA, dr, adr image.Rectangle, d2s *f64.Aff3, src *image.YCbCr, sr image.Rectangle, bias image.Point) {
+ 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])<<16 + 1<<15
+ 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(uint32(pr) >> 8)
+ dst.Pix[d+1] = uint8(uint32(pg) >> 8)
+ dst.Pix[d+2] = uint8(uint32(pb) >> 8)
+ dst.Pix[d+3] = 0xff
+ }
+ }
+}
+
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) {
for dy := int32(adr.Min.Y); dy < int32(adr.Max.Y); dy++ {
dyf := float64(dr.Min.Y+int(dy)) + 0.5
@@ -663,6 +1252,26 @@
}
}
+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) {
+ 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(uint32(pr) >> 8)
+ dst.Pix[d+1] = uint8(uint32(pg) >> 8)
+ dst.Pix[d+2] = uint8(uint32(pb) >> 8)
+ dst.Pix[d+3] = uint8(uint32(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) {
for dy := int32(adr.Min.Y); dy < int32(adr.Max.Y); dy++ {
dyf := float64(dr.Min.Y+int(dy)) + 0.5
@@ -683,6 +1292,28 @@
}
}
+func (nnInterpolator) transform_Image_Image_Over(dst Image, dr, adr image.Rectangle, d2s *f64.Aff3, src image.Image, sr image.Rectangle, bias image.Point) {
+ 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()
+ 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_Image_Image_Src(dst Image, dr, adr image.Rectangle, d2s *f64.Aff3, src image.Image, sr image.Rectangle, bias image.Point) {
dstColorRGBA64 := &color.RGBA64{}
dstColor := color.Color(dstColorRGBA64)
@@ -717,7 +1348,7 @@
if !sr.In(src.Bounds()) {
switch opts.op() {
case Over:
- // TODO: z.scale_Image_Image_Over(dst, dr, adr, src, sr)
+ z.scale_Image_Image_Over(dst, dr, adr, src, sr)
case Src:
z.scale_Image_Image_Src(dst, dr, adr, src, sr)
}
@@ -725,6 +1356,38 @@
Draw(dst, dr, src, src.Bounds().Min, opts.op())
} else {
switch opts.op() {
+ case Over:
+ switch dst := dst.(type) {
+ case *image.RGBA:
+ switch src := src.(type) {
+ case *image.Gray:
+ z.scale_RGBA_Gray_Over(dst, dr, adr, src, sr)
+ case *image.NRGBA:
+ z.scale_RGBA_NRGBA_Over(dst, dr, adr, src, sr)
+ case *image.RGBA:
+ z.scale_RGBA_RGBA_Over(dst, dr, adr, src, sr)
+ case *image.YCbCr:
+ switch src.SubsampleRatio {
+ default:
+ z.scale_RGBA_Image_Over(dst, dr, adr, src, sr)
+ case image.YCbCrSubsampleRatio444:
+ z.scale_RGBA_YCbCr444_Over(dst, dr, adr, src, sr)
+ case image.YCbCrSubsampleRatio422:
+ z.scale_RGBA_YCbCr422_Over(dst, dr, adr, src, sr)
+ case image.YCbCrSubsampleRatio420:
+ z.scale_RGBA_YCbCr420_Over(dst, dr, adr, src, sr)
+ case image.YCbCrSubsampleRatio440:
+ z.scale_RGBA_YCbCr440_Over(dst, dr, adr, src, sr)
+ }
+ default:
+ z.scale_RGBA_Image_Over(dst, dr, adr, src, sr)
+ }
+ default:
+ switch src := src.(type) {
+ default:
+ z.scale_Image_Image_Over(dst, dr, adr, src, sr)
+ }
+ }
case Src:
switch dst := dst.(type) {
case *image.RGBA:
@@ -789,7 +1452,7 @@
if !sr.In(src.Bounds()) {
switch opts.op() {
case Over:
- // TODO: z.transform_Image_Image_Over(dst, dr, adr, &d2s, src, sr, bias)
+ z.transform_Image_Image_Over(dst, dr, adr, &d2s, src, sr, bias)
case Src:
z.transform_Image_Image_Src(dst, dr, adr, &d2s, src, sr, bias)
}
@@ -797,6 +1460,38 @@
transform_Uniform(dst, dr, adr, &d2s, u, sr, bias, opts.op())
} else {
switch opts.op() {
+ case Over:
+ switch dst := dst.(type) {
+ case *image.RGBA:
+ switch src := src.(type) {
+ case *image.Gray:
+ z.transform_RGBA_Gray_Over(dst, dr, adr, &d2s, src, sr, bias)
+ case *image.NRGBA:
+ z.transform_RGBA_NRGBA_Over(dst, dr, adr, &d2s, src, sr, bias)
+ case *image.RGBA:
+ z.transform_RGBA_RGBA_Over(dst, dr, adr, &d2s, src, sr, bias)
+ case *image.YCbCr:
+ switch src.SubsampleRatio {
+ default:
+ z.transform_RGBA_Image_Over(dst, dr, adr, &d2s, src, sr, bias)
+ case image.YCbCrSubsampleRatio444:
+ z.transform_RGBA_YCbCr444_Over(dst, dr, adr, &d2s, src, sr, bias)
+ case image.YCbCrSubsampleRatio422:
+ z.transform_RGBA_YCbCr422_Over(dst, dr, adr, &d2s, src, sr, bias)
+ case image.YCbCrSubsampleRatio420:
+ z.transform_RGBA_YCbCr420_Over(dst, dr, adr, &d2s, src, sr, bias)
+ case image.YCbCrSubsampleRatio440:
+ z.transform_RGBA_YCbCr440_Over(dst, dr, adr, &d2s, src, sr, bias)
+ }
+ default:
+ z.transform_RGBA_Image_Over(dst, dr, adr, &d2s, src, sr, bias)
+ }
+ default:
+ switch src := src.(type) {
+ default:
+ z.transform_Image_Image_Over(dst, dr, adr, &d2s, src, sr, bias)
+ }
+ }
case Src:
switch dst := dst.(type) {
case *image.RGBA:
@@ -833,6 +1528,69 @@
}
}
+func (ablInterpolator) scale_RGBA_Gray_Over(dst *image.RGBA, dr, adr image.Rectangle, src *image.Gray, sr image.Rectangle) {
+ 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
+ out := uint8(uint32(s11r) >> 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_Gray_Src(dst *image.RGBA, dr, adr image.Rectangle, src *image.Gray, sr image.Rectangle) {
sw := int32(sr.Dx())
sh := int32(sr.Dy())
@@ -896,6 +1654,101 @@
}
}
+func (ablInterpolator) scale_RGBA_NRGBA_Over(dst *image.RGBA, dr, adr image.Rectangle, src *image.NRGBA, sr image.Rectangle) {
+ 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
+ dst.Pix[d+0] = uint8(uint32(s11r) >> 8)
+ dst.Pix[d+1] = uint8(uint32(s11g) >> 8)
+ dst.Pix[d+2] = uint8(uint32(s11b) >> 8)
+ dst.Pix[d+3] = uint8(uint32(s11a) >> 8)
+ }
+ }
+}
+
func (ablInterpolator) scale_RGBA_NRGBA_Src(dst *image.RGBA, dr, adr image.Rectangle, src *image.NRGBA, sr image.Rectangle) {
sw := int32(sr.Dx())
sh := int32(sr.Dy())
@@ -991,6 +1844,101 @@
}
}
+func (ablInterpolator) scale_RGBA_RGBA_Over(dst *image.RGBA, dr, adr image.Rectangle, src *image.RGBA, sr image.Rectangle) {
+ 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
+ dst.Pix[d+0] = uint8(uint32(s11r) >> 8)
+ dst.Pix[d+1] = uint8(uint32(s11g) >> 8)
+ dst.Pix[d+2] = uint8(uint32(s11b) >> 8)
+ dst.Pix[d+3] = uint8(uint32(s11a) >> 8)
+ }
+ }
+}
+
func (ablInterpolator) scale_RGBA_RGBA_Src(dst *image.RGBA, dr, adr image.Rectangle, src *image.RGBA, sr image.Rectangle) {
sw := int32(sr.Dx())
sh := int32(sr.Dy())
@@ -1086,6 +2034,694 @@
}
}
+func (ablInterpolator) scale_RGBA_YCbCr444_Over(dst *image.RGBA, dr, adr image.Rectangle, src *image.YCbCr, sr image.Rectangle) {
+ 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])<<16 + 1<<15
+ 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])<<16 + 1<<15
+ 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])<<16 + 1<<15
+ 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])<<16 + 1<<15
+ 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
+ dst.Pix[d+0] = uint8(uint32(s11r) >> 8)
+ dst.Pix[d+1] = uint8(uint32(s11g) >> 8)
+ dst.Pix[d+2] = uint8(uint32(s11b) >> 8)
+ dst.Pix[d+3] = 0xff
+ }
+ }
+}
+
+func (ablInterpolator) scale_RGBA_YCbCr422_Over(dst *image.RGBA, dr, adr image.Rectangle, src *image.YCbCr, sr image.Rectangle) {
+ 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])<<16 + 1<<15
+ 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])<<16 + 1<<15
+ 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])<<16 + 1<<15
+ 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])<<16 + 1<<15
+ 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
+ dst.Pix[d+0] = uint8(uint32(s11r) >> 8)
+ dst.Pix[d+1] = uint8(uint32(s11g) >> 8)
+ dst.Pix[d+2] = uint8(uint32(s11b) >> 8)
+ dst.Pix[d+3] = 0xff
+ }
+ }
+}
+
+func (ablInterpolator) scale_RGBA_YCbCr420_Over(dst *image.RGBA, dr, adr image.Rectangle, src *image.YCbCr, sr image.Rectangle) {
+ 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])<<16 + 1<<15
+ 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])<<16 + 1<<15
+ 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])<<16 + 1<<15
+ 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])<<16 + 1<<15
+ 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
+ dst.Pix[d+0] = uint8(uint32(s11r) >> 8)
+ dst.Pix[d+1] = uint8(uint32(s11g) >> 8)
+ dst.Pix[d+2] = uint8(uint32(s11b) >> 8)
+ dst.Pix[d+3] = 0xff
+ }
+ }
+}
+
+func (ablInterpolator) scale_RGBA_YCbCr440_Over(dst *image.RGBA, dr, adr image.Rectangle, src *image.YCbCr, sr image.Rectangle) {
+ 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])<<16 + 1<<15
+ 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])<<16 + 1<<15
+ 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])<<16 + 1<<15
+ 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])<<16 + 1<<15
+ 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
+ dst.Pix[d+0] = uint8(uint32(s11r) >> 8)
+ dst.Pix[d+1] = uint8(uint32(s11g) >> 8)
+ dst.Pix[d+2] = uint8(uint32(s11b) >> 8)
+ dst.Pix[d+3] = 0xff
+ }
+ }
+}
+
func (ablInterpolator) scale_RGBA_YCbCr444_Src(dst *image.RGBA, dr, adr image.Rectangle, src *image.YCbCr, sr image.Rectangle) {
sw := int32(sr.Dx())
sh := int32(sr.Dy())
@@ -1774,6 +3410,85 @@
}
}
+func (ablInterpolator) scale_RGBA_Image_Over(dst *image.RGBA, dr, adr image.Rectangle, src image.Image, sr image.Rectangle) {
+ 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
+ dst.Pix[d+0] = uint8(uint32(s11r) >> 8)
+ dst.Pix[d+1] = uint8(uint32(s11g) >> 8)
+ dst.Pix[d+2] = uint8(uint32(s11b) >> 8)
+ dst.Pix[d+3] = uint8(uint32(s11a) >> 8)
+ }
+ }
+}
+
func (ablInterpolator) scale_RGBA_Image_Src(dst *image.RGBA, dr, adr image.Rectangle, src image.Image, sr image.Rectangle) {
sw := int32(sr.Dx())
sh := int32(sr.Dy())
@@ -1853,6 +3568,87 @@
}
}
+func (ablInterpolator) scale_Image_Image_Over(dst Image, dr, adr image.Rectangle, src image.Image, sr image.Rectangle) {
+ 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
+ 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()
+ 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
+ dstColorRGBA64.R = uint16(s11r)
+ dstColorRGBA64.G = uint16(s11g)
+ dstColorRGBA64.B = uint16(s11b)
+ dstColorRGBA64.A = uint16(s11a)
+ 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) {
sw := int32(sr.Dx())
sh := int32(sr.Dy())
@@ -1934,6 +3730,70 @@
}
}
+func (ablInterpolator) transform_RGBA_Gray_Over(dst *image.RGBA, dr, adr image.Rectangle, d2s *f64.Aff3, src *image.Gray, sr image.Rectangle, bias image.Point) {
+ 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
+ out := uint8(uint32(s11r) >> 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_Gray_Src(dst *image.RGBA, dr, adr image.Rectangle, d2s *f64.Aff3, src *image.Gray, sr image.Rectangle, bias image.Point) {
for dy := int32(adr.Min.Y); dy < int32(adr.Max.Y); dy++ {
dyf := float64(dr.Min.Y+int(dy)) + 0.5
@@ -1998,6 +3858,102 @@
}
}
+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) {
+ 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
+ dst.Pix[d+0] = uint8(uint32(s11r) >> 8)
+ dst.Pix[d+1] = uint8(uint32(s11g) >> 8)
+ dst.Pix[d+2] = uint8(uint32(s11b) >> 8)
+ dst.Pix[d+3] = uint8(uint32(s11a) >> 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) {
for dy := int32(adr.Min.Y); dy < int32(adr.Max.Y); dy++ {
dyf := float64(dr.Min.Y+int(dy)) + 0.5
@@ -2094,6 +4050,102 @@
}
}
+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) {
+ 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
+ dst.Pix[d+0] = uint8(uint32(s11r) >> 8)
+ dst.Pix[d+1] = uint8(uint32(s11g) >> 8)
+ dst.Pix[d+2] = uint8(uint32(s11b) >> 8)
+ dst.Pix[d+3] = uint8(uint32(s11a) >> 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) {
for dy := int32(adr.Min.Y); dy < int32(adr.Max.Y); dy++ {
dyf := float64(dr.Min.Y+int(dy)) + 0.5
@@ -2190,6 +4242,698 @@
}
}
+func (ablInterpolator) transform_RGBA_YCbCr444_Over(dst *image.RGBA, dr, adr image.Rectangle, d2s *f64.Aff3, src *image.YCbCr, sr image.Rectangle, bias image.Point) {
+ 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])<<16 + 1<<15
+ 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])<<16 + 1<<15
+ 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])<<16 + 1<<15
+ 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])<<16 + 1<<15
+ 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
+ dst.Pix[d+0] = uint8(uint32(s11r) >> 8)
+ dst.Pix[d+1] = uint8(uint32(s11g) >> 8)
+ dst.Pix[d+2] = uint8(uint32(s11b) >> 8)
+ dst.Pix[d+3] = 0xff
+ }
+ }
+}
+
+func (ablInterpolator) transform_RGBA_YCbCr422_Over(dst *image.RGBA, dr, adr image.Rectangle, d2s *f64.Aff3, src *image.YCbCr, sr image.Rectangle, bias image.Point) {
+ 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])<<16 + 1<<15
+ 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])<<16 + 1<<15
+ 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])<<16 + 1<<15
+ 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])<<16 + 1<<15
+ 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
+ dst.Pix[d+0] = uint8(uint32(s11r) >> 8)
+ dst.Pix[d+1] = uint8(uint32(s11g) >> 8)
+ dst.Pix[d+2] = uint8(uint32(s11b) >> 8)
+ dst.Pix[d+3] = 0xff
+ }
+ }
+}
+
+func (ablInterpolator) transform_RGBA_YCbCr420_Over(dst *image.RGBA, dr, adr image.Rectangle, d2s *f64.Aff3, src *image.YCbCr, sr image.Rectangle, bias image.Point) {
+ 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])<<16 + 1<<15
+ 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])<<16 + 1<<15
+ 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])<<16 + 1<<15
+ 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])<<16 + 1<<15
+ 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
+ dst.Pix[d+0] = uint8(uint32(s11r) >> 8)
+ dst.Pix[d+1] = uint8(uint32(s11g) >> 8)
+ dst.Pix[d+2] = uint8(uint32(s11b) >> 8)
+ dst.Pix[d+3] = 0xff
+ }
+ }
+}
+
+func (ablInterpolator) transform_RGBA_YCbCr440_Over(dst *image.RGBA, dr, adr image.Rectangle, d2s *f64.Aff3, src *image.YCbCr, sr image.Rectangle, bias image.Point) {
+ 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])<<16 + 1<<15
+ 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])<<16 + 1<<15
+ 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])<<16 + 1<<15
+ 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])<<16 + 1<<15
+ 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
+ dst.Pix[d+0] = uint8(uint32(s11r) >> 8)
+ dst.Pix[d+1] = uint8(uint32(s11g) >> 8)
+ dst.Pix[d+2] = uint8(uint32(s11b) >> 8)
+ dst.Pix[d+3] = 0xff
+ }
+ }
+}
+
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) {
for dy := int32(adr.Min.Y); dy < int32(adr.Max.Y); dy++ {
dyf := float64(dr.Min.Y+int(dy)) + 0.5
@@ -2882,6 +5626,86 @@
}
}
+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) {
+ 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
+ dst.Pix[d+0] = uint8(uint32(s11r) >> 8)
+ dst.Pix[d+1] = uint8(uint32(s11g) >> 8)
+ dst.Pix[d+2] = uint8(uint32(s11b) >> 8)
+ dst.Pix[d+3] = uint8(uint32(s11a) >> 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) {
for dy := int32(adr.Min.Y); dy < int32(adr.Max.Y); dy++ {
dyf := float64(dr.Min.Y+int(dy)) + 0.5
@@ -2962,6 +5786,88 @@
}
}
+func (ablInterpolator) transform_Image_Image_Over(dst Image, dr, adr image.Rectangle, d2s *f64.Aff3, src image.Image, sr image.Rectangle, bias image.Point) {
+ 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()
+ 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
+ dstColorRGBA64.R = uint16(s11r)
+ dstColorRGBA64.G = uint16(s11g)
+ dstColorRGBA64.B = uint16(s11b)
+ dstColorRGBA64.A = uint16(s11a)
+ 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) {
dstColorRGBA64 := &color.RGBA64{}
dstColor := color.Color(dstColorRGBA64)
@@ -3104,6 +6010,13 @@
}
switch opts.op() {
+ case Over:
+ switch dst := dst.(type) {
+ case *image.RGBA:
+ z.scaleY_RGBA_Over(dst, dr, adr, tmp)
+ default:
+ z.scaleY_Image_Over(dst, dr, adr, tmp)
+ }
case Src:
switch dst := dst.(type) {
case *image.RGBA:
@@ -3157,12 +6070,44 @@
if !sr.In(src.Bounds()) {
switch opts.op() {
case Over:
- // TODO: q.transform_Image_Image_Over(dst, dr, adr, &d2s, src, sr, bias, xscale, yscale)
+ q.transform_Image_Image_Over(dst, dr, adr, &d2s, src, sr, bias, xscale, yscale)
case Src:
q.transform_Image_Image_Src(dst, dr, adr, &d2s, src, sr, bias, xscale, yscale)
}
} else {
switch opts.op() {
+ case Over:
+ switch dst := dst.(type) {
+ case *image.RGBA:
+ switch src := src.(type) {
+ case *image.Gray:
+ q.transform_RGBA_Gray_Over(dst, dr, adr, &d2s, src, sr, bias, xscale, yscale)
+ case *image.NRGBA:
+ q.transform_RGBA_NRGBA_Over(dst, dr, adr, &d2s, src, sr, bias, xscale, yscale)
+ case *image.RGBA:
+ q.transform_RGBA_RGBA_Over(dst, dr, adr, &d2s, src, sr, bias, xscale, yscale)
+ case *image.YCbCr:
+ switch src.SubsampleRatio {
+ default:
+ q.transform_RGBA_Image_Over(dst, dr, adr, &d2s, src, sr, bias, xscale, yscale)
+ case image.YCbCrSubsampleRatio444:
+ q.transform_RGBA_YCbCr444_Over(dst, dr, adr, &d2s, src, sr, bias, xscale, yscale)
+ case image.YCbCrSubsampleRatio422:
+ q.transform_RGBA_YCbCr422_Over(dst, dr, adr, &d2s, src, sr, bias, xscale, yscale)
+ case image.YCbCrSubsampleRatio420:
+ q.transform_RGBA_YCbCr420_Over(dst, dr, adr, &d2s, src, sr, bias, xscale, yscale)
+ case image.YCbCrSubsampleRatio440:
+ q.transform_RGBA_YCbCr440_Over(dst, dr, adr, &d2s, src, sr, bias, xscale, yscale)
+ }
+ default:
+ q.transform_RGBA_Image_Over(dst, dr, adr, &d2s, src, sr, bias, xscale, yscale)
+ }
+ default:
+ switch src := src.(type) {
+ default:
+ q.transform_Image_Image_Over(dst, dr, adr, &d2s, src, sr, bias, xscale, yscale)
+ }
+ }
case Src:
switch dst := dst.(type) {
case *image.RGBA:
@@ -3486,6 +6431,27 @@
}
}
+func (z *kernelScaler) scaleY_RGBA_Over(dst *image.RGBA, dr, adr image.Rectangle, tmp [][4]float64) {
+ 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
+ }
+ 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_RGBA_Src(dst *image.RGBA, dr, adr image.Rectangle, tmp [][4]float64) {
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
@@ -3507,6 +6473,28 @@
}
}
+func (z *kernelScaler) scaleY_Image_Over(dst Image, dr, adr image.Rectangle, tmp [][4]float64) {
+ 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
+ }
+ 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 (z *kernelScaler) scaleY_Image_Src(dst Image, dr, adr image.Rectangle, tmp [][4]float64) {
dstColorRGBA64 := &color.RGBA64{}
dstColor := color.Color(dstColorRGBA64)
@@ -3529,6 +6517,105 @@
}
}
+func (q *Kernel) transform_RGBA_Gray_Over(dst *image.RGBA, dr, adr image.Rectangle, d2s *f64.Aff3, src *image.Gray, sr image.Rectangle, bias image.Point, xscale, yscale float64) {
+ // 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_Gray_Src(dst *image.RGBA, dr, adr image.Rectangle, d2s *f64.Aff3, src *image.Gray, sr image.Rectangle, bias image.Point, xscale, yscale float64) {
// When shrinking, broaden the effective kernel support so that we still
// visit every source pixel.
@@ -3628,6 +6715,110 @@
}
}
+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) {
+ // 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
+ }
+ }
+ }
+ }
+ 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_NRGBA_Src(dst *image.RGBA, dr, adr image.Rectangle, d2s *f64.Aff3, src *image.NRGBA, sr image.Rectangle, bias image.Point, xscale, yscale float64) {
// When shrinking, broaden the effective kernel support so that we still
// visit every source pixel.
@@ -3732,6 +6923,110 @@
}
}
+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) {
+ // 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
+ }
+ }
+ }
+ }
+ 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_Src(dst *image.RGBA, dr, adr image.Rectangle, d2s *f64.Aff3, src *image.RGBA, sr image.Rectangle, bias image.Point, xscale, yscale float64) {
// When shrinking, broaden the effective kernel support so that we still
// visit every source pixel.
@@ -3836,6 +7131,502 @@
}
}
+func (q *Kernel) transform_RGBA_YCbCr444_Over(dst *image.RGBA, dr, adr image.Rectangle, d2s *f64.Aff3, src *image.YCbCr, sr image.Rectangle, bias image.Point, xscale, yscale float64) {
+ // 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])<<16 + 1<<15
+ 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_Over(dst *image.RGBA, dr, adr image.Rectangle, d2s *f64.Aff3, src *image.YCbCr, sr image.Rectangle, bias image.Point, xscale, yscale float64) {
+ // 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])<<16 + 1<<15
+ 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_Over(dst *image.RGBA, dr, adr image.Rectangle, d2s *f64.Aff3, src *image.YCbCr, sr image.Rectangle, bias image.Point, xscale, yscale float64) {
+ // 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])<<16 + 1<<15
+ 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_Over(dst *image.RGBA, dr, adr image.Rectangle, d2s *f64.Aff3, src *image.YCbCr, sr image.Rectangle, bias image.Point, xscale, yscale float64) {
+ // 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])<<16 + 1<<15
+ 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_YCbCr444_Src(dst *image.RGBA, dr, adr image.Rectangle, d2s *f64.Aff3, src *image.YCbCr, sr image.Rectangle, bias image.Point, xscale, yscale float64) {
// When shrinking, broaden the effective kernel support so that we still
// visit every source pixel.
@@ -4332,6 +8123,106 @@
}
}
+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) {
+ // 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
+ }
+ }
+ }
+ }
+ 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_Image_Src(dst *image.RGBA, dr, adr image.Rectangle, d2s *f64.Aff3, src image.Image, sr image.Rectangle, bias image.Point, xscale, yscale float64) {
// When shrinking, broaden the effective kernel support so that we still
// visit every source pixel.
@@ -4432,6 +8323,108 @@
}
}
+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) {
+ // 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)))
+
+ 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()
+ pr += float64(pru) * w
+ pg += float64(pgu) * w
+ pb += float64(pbu) * w
+ pa += float64(pau) * w
+ }
+ }
+ }
+ }
+ 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)
+ }
+ }
+}
+
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) {
// When shrinking, broaden the effective kernel support so that we still
// visit every source pixel.
