// Copyright 2009 The Go Authors.  All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.

// This is a simple demo of Go running under Native Client.
// It is a tetris clone built on top of the exp/nacl/av and exp/draw
// packages.
//
// See ../nacl/README for how to run it.
package main

import (
	"exp/nacl/av"
	"exp/nacl/srpc"
	"log"
	"runtime"
	"os"
)

var sndc chan []uint16

func main() {
	// Native Client requires that some calls are issued
	// consistently by the same OS thread.
	runtime.LockOSThread()

	if srpc.Enabled() {
		go srpc.ServeRuntime()
	}

	args := os.Args
	p := pieces4
	if len(args) > 1 && args[1] == "-5" {
		p = pieces5
	}
	dx, dy := 500, 500
	w, err := av.Init(av.SubsystemVideo|av.SubsystemAudio, dx, dy)
	if err != nil {
		log.Exit(err)
	}

	sndc = make(chan []uint16, 10)
	go audioServer()
	Play(p, w)
}

func audioServer() {
	// Native Client requires that all audio calls
	// original from a single OS thread.
	runtime.LockOSThread()

	n, err := av.AudioStream(nil)
	if err != nil {
		log.Exit(err)
	}
	for {
		b := <-sndc
		for len(b)*2 >= n {
			var a []uint16
			a, b = b[0:n/2], b[n/2:]
			n, err = av.AudioStream(a)
			if err != nil {
				log.Exit(err)
			}
			println(n, len(b)*2)
		}
		a := make([]uint16, n/2)
		for i := range b {
			a[i] = b[i]
		}
		n, err = av.AudioStream(a)
	}
}

func PlaySound(b []uint16) { sndc <- b }

var whoosh = []uint16{
// Insert your favorite sound samples here.
}