public ApplicationSprite()
{
// well does the assets library do something with mp3 for us?
//jeepengine
// not for AIR.
// lets move into embedded resources
var t = new TextField
{
multiline = true,
autoSize = TextFieldAutoSize.LEFT,
text = "click to start",
x = 100
// X:\jsc.svn\examples\actionscript\Test\TestWorkerConsole\TestWorkerConsole\ApplicationSprite.cs
}.AttachToSprite().AsConsole();
new net.hires.debug.Stats().AttachToSprite();
// X:\jsc.svn\examples\actionscript\air\AIRThreadedSoundAsyncLoop\AIRThreadedSoundAsyncLoop\ApplicationSprite.cs
var threadId = 0;
t.click += delegate
{
threadId++;
Console.WriteLine(new { threadId });
var tt = new Thread(async arg0 =>
{
// https://www.packtpub.com/books/content/flash-development-android-audio-input-microphone
Console.WriteLine("enter thread");
var SourceAudio = KnownEmbeddedResources.Default[
"assets/TestWorkerSoundAssetLoop/jeepengine.mp3"
].ToSoundAsset();
// sometimes wont reach here, why? timerace issue?
Console.WriteLine("SourceAudio " + new { SourceAudio.bytesTotal, SourceAudio.id3 });
var SourceAudioBytes = new ByteArray { endian = Endian.LITTLE_ENDIAN };
//2647ms SourceAudio { { bytesTotal = 34625, id3 = [object ID3Info] } }
//2669ms SourceAudio { { samplesperchannel = 105984 } }
var samplesperchannel = (int)SourceAudio.extract(
target: SourceAudioBytes,
length: 0x100000,
startPosition: 0
);
//var MAGIC_DELAY = 2257u; // LAME 3.98.2 + flash.media.Sound Delay
SourceAudioBytes.position = 0;
// cyclical binary reader?
// 63ms enter thread
//66ms SourceAudio { { bytesTotal = 34625, id3 = [object ID3Info] } }
// 95ms SourceAudio { { samplesperchannel = 105984 } }
Console.WriteLine("SourceAudio " + new { samplesperchannel });
// can we await for a click here?
// what if the parameter is the onclick task? /event
// should we prerender our audio loop into the pitch we would need?
//var loopjeep = new Abstractatech.ActionScript.Audio.MP3PitchLoop(SourceAudio);
//it works and keeps the fps
// on android it sounds choppy. why?
// nexus seems to be able to do 16sounds with 60fps.
//loopjeep.Sound.play();
var s = new Sound();
while (true)
{
// X:\jsc.svn\examples\actionscript\Test\TestWorkerSoundAssetLoop\TestWorkerSoundAssetLoop\ApplicationSprite.cs
var e = await s.async.sampleData;
// ftt
//1831ms { { position = 0 } }
//1847ms { { position = 65536 } }
// wrap
if (8192 * 8 + SourceAudioBytes.position > SourceAudioBytes.length)
{
Console.WriteLine(new { SourceAudioBytes.position });
SourceAudioBytes.position = 0;
}
// can we get the pitch from another device over lan?
// can we have framerate as audio?
for (var c = 0; c < 8192; c++)
{
// mipmap?
// 4
var q0 = SourceAudioBytes.readFloat();
// 4
var q1 = SourceAudioBytes.readFloat();
// i wonder, can we use the orientation
// or magnetic north here?
// prep for Gear VR?
e.data.writeFloat(q0 * 0.7);
e.data.writeFloat(q1 * 0.7);
}
}
}
);
tt.Start(null);
};
// can we get heatzeeker to be like a small earth ball?
}
private Sound f(Sound _mp3)
{
var _target = new ByteArray();
var _position = 0.0;
var _sound = new Sound();
_sound.sampleData +=
e =>
{
//-- REUSE INSTEAD OF RECREATION
_target.position = 0;
//-- SHORTCUT
var data = e.data;
var scaledBlockSize = BLOCK_SIZE * _rate;
var positionInt = Convert.ToInt32(_position);
var alpha = _position - positionInt;
var positionTargetNum = alpha;
var positionTargetInt = -1;
//-- COMPUTE NUMBER OF SAMPLES NEED TO PROCESS BLOCK (+2 FOR INTERPOLATION)
var need = Convert.ToInt32(Math.Ceiling(scaledBlockSize) + 2);
//-- EXTRACT SAMPLES
var read = (int)_mp3.extract(_target, need, positionInt);
var n = BLOCK_SIZE;
if (read != need)
n = Convert.ToInt32(read / _rate);
var l0 = .0;
var r0 = .0;
var l1 = .0;
var r1 = .0;
var i = 0;
for (; i < n; i++)
{
//-- AVOID READING EQUAL SAMPLES, IF RATE < 1.0
if (Convert.ToInt32(positionTargetNum) != positionTargetInt)
{
positionTargetInt = Convert.ToInt32(positionTargetNum);
//-- SET TARGET READ POSITION
_target.position = (uint)(positionTargetInt << 3);
//-- READ TWO STEREO SAMPLES FOR LINEAR INTERPOLATION
l0 = _target.readFloat();
r0 = _target.readFloat();
l1 = _target.readFloat();
r1 = _target.readFloat();
}
//-- WRITE INTERPOLATED AMPLITUDES INTO STREAM
data.writeFloat(l0 + alpha * (l1 - l0));
data.writeFloat(r0 + alpha * (r1 - r0));
//-- INCREASE TARGET POSITION
positionTargetNum += _rate;
//-- INCREASE FRACTION AND CLAMP BETWEEN 0 AND 1
alpha += _rate;
while (alpha >= 1.0) --alpha;
}
//-- FILL REST OF STREAM WITH ZEROs
if (i < BLOCK_SIZE)
{
while (i < BLOCK_SIZE)
{
data.writeFloat(0.0);
data.writeFloat(0.0);
++i;
}
}
//-- INCREASE SOUND POSITION
_position += scaledBlockSize;
};
return _sound;
}
