/**
* Copyright ohisama ( http://wonderfl.net/user/ohisama )
* MIT License ( http://www.opensource.org/licenses/mit-license.php )
* Downloaded from: http://wonderfl.net/c/t45S
*/
// forked from mizunohiroshi's PCM test
package
{
import flash.display.Sprite;
import flash.events.Event;
import flash.display.Loader;
import flash.text.TextField;
import flash.text.TextFieldAutoSize;
public class DSG extends Sprite
{
public function DSG()
{
super();
init();
}
private var loader : Loader;
private function init() : void
{
var swf : WavFile = new WavFile();
swf.soundI();
loader = new Loader();
loader.loadBytes(swf.swfFile);
addChild(loader);
var tf: TextField = new TextField();
tf.text = "load ok";
tf.autoSize = TextFieldAutoSize.LEFT;
addChild(tf);
}
}
}
import flash.events.Event;
import flash.events.TimerEvent;
import flash.utils.Timer;
import flash.events.EventDispatcher;
import flash.events.SampleDataEvent;
import flash.media.Sound;
import flash.utils.ByteArray;
class Tone extends EventDispatcher
{
public static const SAMPLING_RATE : Number = 44100.0;
public static const BUFFER_SIZE : int = 8192;
public static const FREQ : int = 220;
public function Tone()
{
pcm_ = new ByteArray();
for (var i : int = 0; i < BUFFER_SIZE; ++i)
{
var v : Number = 0.0;
v += Math.sin( 1.0 * FREQ * 2 * Math.PI * i / SAMPLING_RATE) * 0.060;
v += Math.sin( 2.0 * FREQ * 2 * Math.PI * i / SAMPLING_RATE) * 0.100;
v += Math.sin(14.0 * FREQ * 2 * Math.PI * i / SAMPLING_RATE) * 0.005;
v += Math.sin(15.0 * FREQ * 2 * Math.PI * i / SAMPLING_RATE) * 0.015;
v += Math.sin(16.0 * FREQ * 2 * Math.PI * i / SAMPLING_RATE) * 0.005;
v += Math.sin(17.0 * FREQ * 2 * Math.PI * i / SAMPLING_RATE) * 0.005;
v += Math.sin(18.0 * FREQ * 2 * Math.PI * i / SAMPLING_RATE) * 0.005;
v += Math.sin(19.0 * FREQ * 2 * Math.PI * i / SAMPLING_RATE) * 0.005;
v += Math.sin(20.0 * FREQ * 2 * Math.PI * i / SAMPLING_RATE) * 0.015;
v += Math.sin(21.0 * FREQ * 2 * Math.PI * i / SAMPLING_RATE) * 0.015;
v += Math.sin(22.0 * FREQ * 2 * Math.PI * i / SAMPLING_RATE) * 0.015;
v += Math.sin(23.0 * FREQ * 2 * Math.PI * i / SAMPLING_RATE) * 0.015;
v += Math.sin(24.0 * FREQ * 2 * Math.PI * i / SAMPLING_RATE) * 0.030;
v += Math.sin(25.0 * FREQ * 2 * Math.PI * i / SAMPLING_RATE) * 0.025;
v += Math.sin(26.0 * FREQ * 2 * Math.PI * i / SAMPLING_RATE) * 0.020;
v += Math.sin(27.0 * FREQ * 2 * Math.PI * i / SAMPLING_RATE) * 0.015;
pcm_.writeFloat(v);
pcm_.writeFloat(v);
}
}
private var pcm_ : ByteArray;
private var sound_ : Sound;
public function start() : void
{
sound_ = new Sound();
sound_.addEventListener(SampleDataEvent.SAMPLE_DATA, soundSampleDataHandler);
sound_.play();
}
public function stop() : void
{
sound_.removeEventListener(SampleDataEvent.SAMPLE_DATA, soundSampleDataHandler);
dispatchEvent(new Event(Event.COMPLETE));
}
private function soundSampleDataHandler(event : SampleDataEvent) : void
{
event.data.writeBytes(pcm_);
}
}
class WavFile
{
import flash.utils.*;
public var formatID : int;
public var channel : int;
public var rate : uint;
public var bps : uint;
public var blockSize : int;
public var sampling : int;
public var fileSize : uint;
public var swfFile : ByteArray;
private const RIFF : uint = 0x46464952;
private const WAVE : uint = 0x45564157;
private const FMT : uint = 0x20746D66;
private const DATA : uint = 0x61746164;
private const FormatID_PCM : uint = 0x0001;
private const DummyData : Array =
[
0x46,0x57,0x53,0x06,0x00,0x00,0x00,0x00,
0x80,0x00,0x00,0xC8,0x00,0x00,0x00,0xC8,
0x00,0x00,0x0C,0x01,0x00,
0x43,0x02,0xFF,0xFF,0xFF,
0x13,0x08,0x02,0x00,0xC0,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x88,0x00,
0x85,0x06,
0x02,0x01,0x01,0x02,0x00,
0x40,0x00
];
private const SwfFileSizePosition : uint = 4;
private var StartSoundTag : Array =
[
0xC3,0x03,0x01,0x00,0x00
];
private var EndTag : Array =
[
0x00,0x00
];
private const DefineSoundTagNo : uint = 14;
private const DefineSoundTagHeaderLength : uint = 7;
private const SoundFormat_PCM_Little : uint = 3;
public function soundI() : void
{
const SAMPLING_RATE : int = 44100;
const FREQ : int = 220;
var pcm : ByteArray = new ByteArray();
pcm.endian = Endian.LITTLE_ENDIAN;
for (var i : int = 0; i < 2 * SAMPLING_RATE; ++i)
{
var v : int = 0;
v += 200 * Math.sin( 1.0 * FREQ * 2 * Math.PI * i / SAMPLING_RATE);
v += 300 * Math.sin( 2.0 * FREQ * 2 * Math.PI * i / SAMPLING_RATE);
v += 15 * Math.sin(14.0 * FREQ * 2 * Math.PI * i / SAMPLING_RATE);
v += 45 * Math.sin(15.0 * FREQ * 2 * Math.PI * i / SAMPLING_RATE);
v += 15 * Math.sin(16.0 * FREQ * 2 * Math.PI * i / SAMPLING_RATE);
v += 15 * Math.sin(17.0 * FREQ * 2 * Math.PI * i / SAMPLING_RATE);
v += 15 * Math.sin(18.0 * FREQ * 2 * Math.PI * i / SAMPLING_RATE);
v += 15 * Math.sin(19.0 * FREQ * 2 * Math.PI * i / SAMPLING_RATE);
v += 45 * Math.sin(20.0 * FREQ * 2 * Math.PI * i / SAMPLING_RATE);
v += 45 * Math.sin(21.0 * FREQ * 2 * Math.PI * i / SAMPLING_RATE);
v += 45 * Math.sin(22.0 * FREQ * 2 * Math.PI * i / SAMPLING_RATE);
v += 45 * Math.sin(23.0 * FREQ * 2 * Math.PI * i / SAMPLING_RATE);
v += 90 * Math.sin(24.0 * FREQ * 2 * Math.PI * i / SAMPLING_RATE);
v += 75 * Math.sin(25.0 * FREQ * 2 * Math.PI * i / SAMPLING_RATE);
v += 60 * Math.sin(26.0 * FREQ * 2 * Math.PI * i / SAMPLING_RATE);
v += 45 * Math.sin(27.0 * FREQ * 2 * Math.PI * i / SAMPLING_RATE);
v *= 4;
pcm.writeShort(v);
}
writeToSwfFile(pcm);
}
private function writeToSwfFile(data : ByteArray) : Boolean
{
var i : int;
var tmp : int;
swfFile = new ByteArray();
swfFile.endian = Endian.LITTLE_ENDIAN;
for (i = 0; i < DummyData.length; i++)
{
swfFile.writeByte(DummyData[i]);
}
if ((DefineSoundTagHeaderLength + data.length) < 0x3f)
{
swfFile.writeShort((DefineSoundTagNo << 6) | (DefineSoundTagHeaderLength + data.length));
}
else
{
swfFile.writeShort((DefineSoundTagNo << 6) | 0x3f);
swfFile.writeUnsignedInt(DefineSoundTagHeaderLength + data.length);
}
swfFile.writeShort(1);
tmp = SoundFormat_PCM_Little;
tmp <<= 2;
tmp |= 3;
tmp <<= 1;
tmp |= 1;
tmp <<= 1;
swfFile.writeByte(tmp);
swfFile.writeUnsignedInt(int(data.length / blockSize));
swfFile.writeBytes(data);
for (i = 0; i < StartSoundTag.length; i++)
{
swfFile.writeByte(StartSoundTag[i]);
}
for (i = 0; i < EndTag.length; i++)
{
swfFile.writeByte(EndTag[i]);
}
swfFile.position = SwfFileSizePosition;
swfFile.writeUnsignedInt(swfFile.length);
return true;
}
}
