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- Refactorings and basic implementations in the Audio namespace

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- Added WaveLoader from my AC.AL project
- Implemented OpenALSoundEffect and OpenALSoundEffectInstance (not tested yet!)
This commit is contained in:
SND\AstrorEnales_cp 2012-08-26 12:53:00 +00:00
parent e23261bfc3
commit 2bcebca384
20 changed files with 892 additions and 119 deletions
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2
ANX.Framework/Audio/AudioCategory.cs
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@ -56,7 +56,7 @@ namespace ANX.Framework.Audio
#region ToString
public override string ToString()
{
throw new NotImplementedException();
return Name;
}
#endregion

18
ANX.Framework/Audio/AudioEngine.cs
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@ -20,10 +20,8 @@ namespace ANX.Framework.Audio
#region Public
public bool IsDisposed
{
get
{
throw new NotImplementedException();
}
get;
private set;
}
public ReadOnlyCollection<RendererDetail> RendererDetails
@ -41,8 +39,7 @@ namespace ANX.Framework.Audio
throw new NotImplementedException();
}
public AudioEngine(string settingsFile, TimeSpan lookAheadTime,
string rendererId)
public AudioEngine(string settingsFile, TimeSpan lookAheadTime, string rendererId)
{
throw new NotImplementedException();
}
@ -84,12 +81,17 @@ namespace ANX.Framework.Audio
#region Dispose
protected virtual void Dispose(bool disposing)
{
throw new NotImplementedException();
if (IsDisposed == false)
{
IsDisposed = true;
throw new NotImplementedException();
}
}
public void Dispose()
{
throw new NotImplementedException();
Dispose(true);
GC.SuppressFinalize(this);
}
#endregion
}

16
ANX.Framework/Audio/Cue.cs
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@ -23,10 +23,8 @@ namespace ANX.Framework.Audio
public bool IsDisposed
{
get
{
throw new NotImplementedException();
}
get;
private set;
}
public bool IsPaused
@ -87,6 +85,10 @@ namespace ANX.Framework.Audio
#endregion
#region Constructor
internal Cue()
{
}
~Cue()
{
Dispose();
@ -145,7 +147,11 @@ namespace ANX.Framework.Audio
#region Dispose
public void Dispose()
{
throw new NotImplementedException();
if (IsDisposed == false)
{
IsDisposed = true;
throw new NotImplementedException();
}
}
#endregion
}

2
ANX.Framework/Audio/InstancePlayLimitException.cs
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@ -11,7 +11,7 @@ using System.Runtime.InteropServices;
namespace ANX.Framework.Audio
{
#if !WINDOWSMETRO //TODO: search replacement for Win8
[SerializableAttribute]
[Serializable]
#endif
public sealed class InstancePlayLimitException : ExternalException
{

2
ANX.Framework/Audio/SoundBank.cs
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@ -70,9 +70,7 @@ namespace ANX.Framework.Audio
protected virtual void Dispose(bool disposing)
{
if (IsDisposed)
{
return;
}
IsDisposed = true;
throw new NotImplementedException();

28
ANX.Framework/Audio/SoundEffect.cs
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@ -71,11 +71,9 @@ namespace ANX.Framework.Audio
#endregion
#region Private
internal ISoundEffect nativeSoundEffect;
private static List<SoundEffectInstance> fireAndForgetInstances;
private List<WeakReference> children = new List<WeakReference>();
private List<WeakReference> children;
internal ISoundEffect nativeSoundEffect;
#endregion
#region Public
@ -103,13 +101,22 @@ namespace ANX.Framework.Audio
#region Constructor
static SoundEffect()
{
fireAndForgetInstances = new List<SoundEffectInstance>();
MasterVolume = 1f;
SpeedOfSound = 343.5f;
DopplerScale = 1f;
DistanceScale = 1f;
}
private SoundEffect()
{
children = new List<WeakReference>();
IsDisposed = false;
}
private SoundEffect(Stream stream)
: this()
{
nativeSoundEffect = GetCreator().CreateSoundEffect(this, stream);
}
@ -121,6 +128,7 @@ namespace ANX.Framework.Audio
public SoundEffect(byte[] buffer, int offset, int count, int sampleRate,
AudioChannels channels, int loopStart, int loopLength)
: this()
{
nativeSoundEffect = GetCreator().CreateSoundEffect(this, buffer, offset,
count, sampleRate, channels, loopStart, loopLength);
@ -154,12 +162,10 @@ namespace ANX.Framework.Audio
#endregion
#region GetSampleDuration
public static TimeSpan GetSampleDuration(int sizeInBytes, int sampleRate,
AudioChannels channels)
public static TimeSpan GetSampleDuration(int sizeInBytes, int sampleRate, AudioChannels channels)
{
float sizeMulBlockAlign = sizeInBytes / ((int)channels * 2);
return TimeSpan.FromMilliseconds((double)(sizeMulBlockAlign * 1000f /
(float)sampleRate));
return TimeSpan.FromMilliseconds((double)(sizeMulBlockAlign * 1000f / (float)sampleRate));
}
#endregion
@ -167,10 +173,8 @@ namespace ANX.Framework.Audio
public static int GetSampleSizeInBytes(TimeSpan duration, int sampleRate,
AudioChannels channels)
{
int timeMulSamples = (int)(duration.TotalMilliseconds *
(double)((float)sampleRate / 1000f));
return (timeMulSamples + timeMulSamples % (int)channels) *
((int)channels * 2);
int timeMulSamples = (int)(duration.TotalMilliseconds * (double)((float)sampleRate / 1000f));
return (timeMulSamples + timeMulSamples % (int)channels) * ((int)channels * 2);
}
#endregion

5
ANX.Framework/Audio/WaveBank.cs
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@ -41,8 +41,7 @@ namespace ANX.Framework.Audio
{
}
public WaveBank(AudioEngine audioEngine, string streamingWaveBankFilename,
int offset, short packetsize)
public WaveBank(AudioEngine audioEngine, string streamingWaveBankFilename, int offset, short packetsize)
{
}
@ -62,9 +61,7 @@ namespace ANX.Framework.Audio
protected virtual void Dispose(bool disposing)
{
if (IsDisposed)
{
return;
}
IsDisposed = true;

8
ANX.Framework/GameHost.cs
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@ -12,14 +12,6 @@ namespace ANX.Framework
{
public abstract class GameHost
{
//private EventHandler<EventArgs> Activated;
//private EventHandler<EventArgs> Deactivated;
//private EventHandler<EventArgs> Exiting;
//private EventHandler<EventArgs> Idle;
//private EventHandler<EventArgs> Resume;
//private EventHandler<EventArgs> Suspend;
// Events
internal event EventHandler<EventArgs> Activated;
internal event EventHandler<EventArgs> Deactivated;
internal event EventHandler<EventArgs> Exiting;

11
ANX.Framework/Media/Song.cs
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@ -16,17 +16,15 @@ namespace ANX.Framework.Media
public string Name
{
get
{
throw new NotImplementedException();
}
get;
private set;
}
public bool IsRated
{
get
{
throw new NotImplementedException();
return Rating > 0;
}
}
@ -95,8 +93,9 @@ namespace ANX.Framework.Media
}
#region Constructor
private Song()
internal Song(string setName)
{
Name = setName;
IsDisposed = false;
}

43
ANX.Framework/Media/Video.cs
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@ -8,44 +8,47 @@ namespace ANX.Framework.Media
{
public sealed class Video
{
#region Public
public TimeSpan Duration
{
get
{
throw new NotImplementedException();
}
get;
private set;
}
public int Width
{
get
{
throw new NotImplementedException();
}
get;
private set;
}
public int Height
{
get
{
throw new NotImplementedException();
}
get;
private set;
}
public float FramesPerSecond
{
get
{
throw new NotImplementedException();
}
get;
private set;
}
public VideoSoundtrackType VideoSoundtrackType
{
get
{
throw new NotImplementedException();
}
get;
private set;
}
#endregion
#region Constructor
internal Video(int duration, int width, int height, float framesPerSecond, VideoSoundtrackType soundtrackType)
{
Duration = new TimeSpan(0, 0, 0, 0, duration);
Width = width;
Height = height;
FramesPerSecond = framesPerSecond;
VideoSoundtrackType = soundtrackType;
}
#endregion
}
}

6
SoundSystems/ANX.SoundSystem.OpenAL/ANX.SoundSystem.OpenAL.csproj
View File

@ -70,6 +70,12 @@
<Compile Include="OpenALSoundEffectInstance.cs" />
<Compile Include="Properties\AssemblyInfo.cs" />
<Compile Include="SupportedPlatformsImpl.cs" />
<Compile Include="Wave\ALaw.cs" />
<Compile Include="Wave\MsAdpcm.cs" />
<Compile Include="Wave\MuLaw.cs" />
<Compile Include="Wave\WaveFile.cs" />
<Compile Include="Wave\WaveFormat.cs" />
<Compile Include="Wave\WaveInfo.cs" />
</ItemGroup>
<ItemGroup>
<ProjectReference Include="..\..\ANX.Framework\ANX.Framework.csproj">

51
SoundSystems/ANX.SoundSystem.OpenAL/Creator.cs
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@ -4,6 +4,7 @@ using System.IO;
using ANX.Framework.Audio;
using ANX.Framework.NonXNA;
using ANX.Framework.NonXNA.SoundSystem;
using OpenTK.Audio.OpenAL;
// This file is part of the ANX.Framework created by the
// "ANX.Framework developer group" and released under the Ms-PL license.
@ -14,7 +15,6 @@ namespace ANX.SoundSystem.OpenAL
public class Creator : ISoundSystemCreator
{
#region Public
#region Name
public string Name
{
get
@ -22,9 +22,7 @@ namespace ANX.SoundSystem.OpenAL
return "Sound.OpenAL";
}
}
#endregion
#region Priority
public int Priority
{
get
@ -32,9 +30,7 @@ namespace ANX.SoundSystem.OpenAL
return 100;
}
}
#endregion
#region IsSupported
public bool IsSupported
{
get
@ -45,9 +41,7 @@ namespace ANX.SoundSystem.OpenAL
os == PlatformName.MacOSX;
}
}
#endregion
#region DistanceScale
public float DistanceScale
{
get
@ -59,23 +53,19 @@ namespace ANX.SoundSystem.OpenAL
throw new NotImplementedException();
}
}
#endregion
#region DopplerScale
public float DopplerScale
{
get
{
throw new NotImplementedException();
return AL.Get(ALGetFloat.DopplerFactor);
}
set
{
throw new NotImplementedException();
AL.DopplerFactor(value);
}
}
#endregion
#region MasterVolume
public float MasterVolume
{
get
@ -87,46 +77,41 @@ namespace ANX.SoundSystem.OpenAL
throw new NotImplementedException();
}
}
#endregion
#region SpeedOfSound
public float SpeedOfSound
{
get
{
throw new NotImplementedException();
return AL.Get(ALGetFloat.SpeedOfSound);
}
set
{
throw new NotImplementedException();
AL.SpeedOfSound(value);
}
}
#endregion
#endregion
#region CreateSoundEffectInstance
public ISoundEffectInstance CreateSoundEffectInstance(
ISoundEffect nativeSoundEffect)
public ISoundEffectInstance CreateSoundEffectInstance(ISoundEffect nativeSoundEffect)
{
AddInSystemFactory.Instance.PreventSystemChange(AddInType.SoundSystem);
return new OpenALSoundEffectInstance((OpenALSoundEffect)nativeSoundEffect);
PreventSystemChange();
return new OpenALSoundEffectInstance(nativeSoundEffect as OpenALSoundEffect);
}
#endregion
#region CreateSoundEffect
public ISoundEffect CreateSoundEffect(SoundEffect parent, Stream stream)
{
AddInSystemFactory.Instance.PreventSystemChange(AddInType.SoundSystem);
PreventSystemChange();
return new OpenALSoundEffect(parent, stream);
}
#endregion
#region CreateSoundEffect (TODO)
public ISoundEffect CreateSoundEffect(SoundEffect parent, byte[] buffer,
int offset, int count, int sampleRate, AudioChannels channels,
int loopStart, int loopLength)
public ISoundEffect CreateSoundEffect(SoundEffect parent, byte[] buffer, int offset, int count, int sampleRate,
AudioChannels channels, int loopStart, int loopLength)
{
AddInSystemFactory.Instance.PreventSystemChange(AddInType.SoundSystem);
PreventSystemChange();
throw new NotImplementedException();
}
#endregion
@ -134,7 +119,7 @@ namespace ANX.SoundSystem.OpenAL
#region CreateAudioListener
public IAudioListener CreateAudioListener()
{
AddInSystemFactory.Instance.PreventSystemChange(AddInType.SoundSystem);
PreventSystemChange();
return new OpenALAudioListener();
}
#endregion
@ -142,7 +127,7 @@ namespace ANX.SoundSystem.OpenAL
#region CreateAudioEmitter (TODO)
public IAudioEmitter CreateAudioEmitter()
{
AddInSystemFactory.Instance.PreventSystemChange(AddInType.SoundSystem);
PreventSystemChange();
throw new NotImplementedException();
}
#endregion
@ -150,6 +135,7 @@ namespace ANX.SoundSystem.OpenAL
#region CreateMicrophone
public IMicrophone CreateMicrophone(Microphone managedMicrophone)
{
PreventSystemChange();
throw new NotImplementedException();
}
#endregion
@ -157,6 +143,7 @@ namespace ANX.SoundSystem.OpenAL
#region GetAllMicrophones
public ReadOnlyCollection<Microphone> GetAllMicrophones()
{
PreventSystemChange();
throw new NotImplementedException();
}
#endregion
@ -164,8 +151,14 @@ namespace ANX.SoundSystem.OpenAL
#region GetDefaultMicrophone
public int GetDefaultMicrophone(ReadOnlyCollection<Microphone> allMicrophones)
{
PreventSystemChange();
throw new NotImplementedException();
}
#endregion
private void PreventSystemChange()
{
AddInSystemFactory.Instance.PreventSystemChange(AddInType.SoundSystem);
}
}
}

29
SoundSystems/ANX.SoundSystem.OpenAL/OpenALSoundEffect.cs
View File

@ -2,6 +2,11 @@
using System.IO;
using ANX.Framework.Audio;
using ANX.Framework.NonXNA.SoundSystem;
using OpenTK.Audio;
// This file is part of the ANX.Framework created by the
// "ANX.Framework developer group" and released under the Ms-PL license.
// For details see: http://anxframework.codeplex.com/license
namespace ANX.SoundSystem.OpenAL
{
@ -9,14 +14,20 @@ namespace ANX.SoundSystem.OpenAL
{
#region Private
internal SoundEffect parent;
private WaveInfo waveInfo;
private TimeSpan duration;
internal int bufferHandle;
#endregion
#region Public (TODO)
#region Public
public TimeSpan Duration
{
get
{
throw new NotImplementedException();
return duration;
}
}
#endregion
@ -25,13 +36,23 @@ namespace ANX.SoundSystem.OpenAL
internal OpenALSoundEffect(SoundEffect setParent, Stream stream)
{
parent = setParent;
waveInfo = WaveFile.LoadData(stream);
float sizeMulBlockAlign = waveInfo.Data.Length / ((int)waveInfo.Channels * 2);
duration = TimeSpan.FromMilliseconds((double)(sizeMulBlockAlign * 1000f / (float)waveInfo.SampleRate));
bufferHandle = AL.GenBuffer();
AL.BufferData(bufferHandle, waveInfo.OpenALFormat, waveInfo.Data, waveInfo.Data.Length, waveInfo.SampleRate);
}
#endregion
#region Dispose (TODO)
#region Dispose
public void Dispose()
{
throw new NotImplementedException();
waveInfo = null;
AL.DeleteBuffer(bufferHandle);
}
#endregion
}

88
SoundSystems/ANX.SoundSystem.OpenAL/OpenALSoundEffectInstance.cs
View File

@ -1,6 +1,11 @@
using System;
using ANX.Framework.Audio;
using ANX.Framework.NonXNA.SoundSystem;
using OpenTK.Audio;
// This file is part of the ANX.Framework created by the
// "ANX.Framework developer group" and released under the Ms-PL license.
// For details see: http://anxframework.codeplex.com/license
namespace ANX.SoundSystem.OpenAL
{
@ -8,18 +13,22 @@ namespace ANX.SoundSystem.OpenAL
{
#region Private
private OpenALSoundEffect parent;
private int handle;
#endregion
#region Public (TODO)
#region Public
public bool IsLooped
{
get
{
throw new NotImplementedException();
bool result;
AL.GetSource(handle, ALSourceb.Looping, out result);
return result;
}
set
{
throw new NotImplementedException();
AL.Source(handle, ALSourceb.Looping, value);
}
}
@ -39,31 +48,33 @@ namespace ANX.SoundSystem.OpenAL
{
get
{
throw new NotImplementedException();
float result;
AL.GetSource(handle, ALSourcef.Pitch, out result);
return result;
}
set
{
throw new NotImplementedException();
AL.Source(handle, ALSourcef.Pitch, value);
}
}
public SoundState State
{
get
{
throw new NotImplementedException();
}
get;
private set;
}
public float Volume
{
get
{
throw new NotImplementedException();
float result;
AL.GetSource(handle, ALSourcef.Gain, out result);
return result;
}
set
{
throw new NotImplementedException();
AL.Source(handle, ALSourcef.Gain, value);
}
}
#endregion
@ -72,38 +83,77 @@ namespace ANX.SoundSystem.OpenAL
internal OpenALSoundEffectInstance(OpenALSoundEffect setParent)
{
parent = setParent;
State = SoundState.Stopped;
handle = AL.GenSource();
AL.Source(handle, ALSourcei.Buffer, parent.bufferHandle);
IsLooped = false;
Pitch = 1f;
Volume = 1f;
// TODO: Pan = 0f;
}
#endregion
#region Play
public void Play()
{
throw new NotImplementedException();
if (State != SoundState.Playing)
{
State = SoundState.Playing;
AL.SourcePlay(handle);
}
}
#endregion
#region Pause
public void Pause()
{
throw new NotImplementedException();
if (State != SoundState.Paused)
{
State = SoundState.Paused;
AL.SourcePause(handle);
}
}
#endregion
#region Stop
public void Stop(bool immediate)
{
throw new NotImplementedException();
}
if (State == SoundState.Stopped)
return;
if (immediate)
{
State = SoundState.Stopped;
AL.SourceStop(handle);
}
}
#endregion
#region Resume
public void Resume()
{
throw new NotImplementedException();
if (State != SoundState.Playing)
{
State = SoundState.Playing;
AL.SourcePlay(handle);
}
}
#endregion
public void Apply3D(Framework.Audio.AudioListener[] listeners, Framework.Audio.AudioEmitter emitter)
#region Apply3D (TODO)
public void Apply3D(AudioListener[] listeners, AudioEmitter emitter)
{
throw new NotImplementedException();
}
#endregion
#region Dispose (TODO)
#region Dispose
public void Dispose()
{
throw new NotImplementedException();
AL.DeleteSource(handle);
handle = -1;
}
#endregion
}

122
SoundSystems/ANX.SoundSystem.OpenAL/Wave/ALaw.cs Normal file
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@ -0,0 +1,122 @@
using System;
using System.IO;
using OpenTK.Audio;
// This file is part of the ANX.Framework and originally taken from
// the AC.AL OpenAL library, released under the MIT License.
// For details see: http://acal.codeplex.com/license
namespace ANX.SoundSystem.OpenAL
{
/// <summary>
/// http://www.threejacks.com/?q=node/176
/// </summary>
internal static class ALaw
{
#region Decode Table
private static readonly short[] DecodeTable =
{
-5504, -5248, -6016, -5760, -4480, -4224, -4992, -4736,
-7552, -7296, -8064, -7808, -6528, -6272, -7040, -6784,
-2752, -2624, -3008, -2880, -2240, -2112, -2496, -2368,
-3776, -3648, -4032, -3904, -3264, -3136, -3520, -3392,
-22016,-20992,-24064,-23040,-17920,-16896,-19968,-18944,
-30208,-29184,-32256,-31232,-26112,-25088,-28160,-27136,
-11008,-10496,-12032,-11520,-8960, -8448, -9984, -9472,
-15104,-14592,-16128,-15616,-13056,-12544,-14080,-13568,
-344, -328, -376, -360, -280, -264, -312, -296,
-472, -456, -504, -488, -408, -392, -440, -424,
-88, -72, -120, -104, -24, -8, -56, -40,
-216, -200, -248, -232, -152, -136, -184, -168,
-1376, -1312, -1504, -1440, -1120, -1056, -1248, -1184,
-1888, -1824, -2016, -1952, -1632, -1568, -1760, -1696,
-688, -656, -752, -720, -560, -528, -624, -592,
-944, -912, -1008, -976, -816, -784, -880, -848,
5504, 5248, 6016, 5760, 4480, 4224, 4992, 4736,
7552, 7296, 8064, 7808, 6528, 6272, 7040, 6784,
2752, 2624, 3008, 2880, 2240, 2112, 2496, 2368,
3776, 3648, 4032, 3904, 3264, 3136, 3520, 3392,
22016, 20992, 24064, 23040, 17920, 16896, 19968, 18944,
30208, 29184, 32256, 31232, 26112, 25088, 28160, 27136,
11008, 10496, 12032, 11520, 8960, 8448, 9984, 9472,
15104, 14592, 16128, 15616, 13056, 12544, 14080, 13568,
344, 328, 376, 360, 280, 264, 312, 296,
472, 456, 504, 488, 408, 392, 440, 424,
88, 72, 120, 104, 24, 8, 56, 40,
216, 200, 248, 232, 152, 136, 184, 168,
1376, 1312, 1504, 1440, 1120, 1056, 1248, 1184,
1888, 1824, 2016, 1952, 1632, 1568, 1760, 1696,
688, 656, 752, 720, 560, 528, 624, 592,
944, 912, 1008, 976, 816, 784, 880, 848
};
#endregion
#region Encode Table
private static readonly byte[] EncodeTable =
{
1, 1, 2, 2, 3, 3, 3, 3,
4, 4, 4, 4, 4, 4, 4, 4,
5, 5, 5, 5, 5, 5, 5, 5,
5, 5, 5, 5, 5, 5, 5, 5,
6, 6, 6, 6, 6, 6, 6, 6,
6, 6, 6, 6, 6, 6, 6, 6,
6, 6, 6, 6, 6, 6, 6, 6,
6, 6, 6, 6, 6, 6, 6, 6,
7, 7, 7, 7, 7, 7, 7, 7,
7, 7, 7, 7, 7, 7, 7, 7,
7, 7, 7, 7, 7, 7, 7, 7,
7, 7, 7, 7, 7, 7, 7, 7,
7, 7, 7, 7, 7, 7, 7, 7,
7, 7, 7, 7, 7, 7, 7, 7,
7, 7, 7, 7, 7, 7, 7, 7,
7, 7, 7, 7, 7, 7, 7, 7
};
#endregion
#region ConvertToALaw (TODO)
private static void ConvertToALaw(WaveInfo info)
{
//int sign;
//int exponent;
//int mantissa;
//unsigned char compressedByte;
//sign = ((~sample) >> 8) & 0x80;
//if (!sign)
// sample = (short)-sample;
//if (sample > cClip)
// sample = cClip;
//if (sample >= 256)
//{
// exponent = (int)ALawCompressTable[(sample >> 8) & 0x7F];
// mantissa = (sample >> (exponent + 3) ) & 0x0F;
// compressedByte = ((exponent << 4) | mantissa);
//}
//else
//{
// compressedByte = (unsigned char)(sample >> 4);
//}
//compressedByte ^= (sign ^ 0x55);
//return compressedByte;
}
#endregion
#region ConvertToPcm
public static void ConvertToPcm(WaveInfo info)
{
info.OpenALFormat = info.Channels == 1 ?
ALFormat.Mono16 :
ALFormat.Stereo16;
MemoryStream destStream = new MemoryStream();
BinaryWriter destWriter = new BinaryWriter(destStream);
for (int index = 0; index < info.Data.Length; index++)
{
destWriter.Write(DecodeTable[info.Data[index]]);
}
destWriter.Close();
info.Data = destStream.ToArray();
destStream.Dispose();
}
#endregion
}
}

141
SoundSystems/ANX.SoundSystem.OpenAL/Wave/MsAdpcm.cs Normal file
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@ -0,0 +1,141 @@
using System;
using System.IO;
// This file is part of the ANX.Framework and originally taken from
// the AC.AL OpenAL library, released under the MIT License.
// For details see: http://acal.codeplex.com/license
namespace ANX.SoundSystem.OpenAL
{
/// <summary>
/// http://wiki.multimedia.cx/index.php?title=Microsoft_ADPCM
/// <para />
/// http://dslinux.gits.kiev.ua/trunk/lib/audiofile/src/libaudiofile/modules/msadpcm.c
/// <para />
/// http://netghost.narod.ru/gff/vendspec/micriff/ms_riff.txt
/// </summary>
internal static class MsAdpcm
{
#region Decoding Tables
private static readonly int[] AdaptationTable =
{
230, 230, 230, 230, 307, 409, 512, 614,
768, 614, 512, 409, 307, 230, 230, 230
};
private static readonly int[] AdaptCoeff1 =
{
256, 512, 0, 192, 240, 460, 392
};
private static readonly int[] AdaptCoeff2 =
{
0, -256, 0, 64, 0, -208, -232
};
#endregion
#region StateObject (helper class)
private class StateObject
{
/// <summary>
/// Indices in the aCoef array to define the predictor
/// used to encode this block.
/// </summary>
public byte predicator;
/// <summary>
/// Initial Delta value to use.
/// </summary>
public short delta;
/// <summary>
/// The second sample value of the block. When decoding this will be
/// used as the previous sample to start decoding with.
/// </summary>
public short sample1;
/// <summary>
/// The first sample value of the block. When decoding this will be
/// used as the previous' previous sample to start decoding with.
/// </summary>
public short sample2;
}
#endregion
#region ConvertToPcm
public static void ConvertToPcm(WaveInfo info)
{
BinaryReader reader = new BinaryReader(new MemoryStream(info.Data));
MemoryStream result = new MemoryStream();
BinaryWriter writer = new BinaryWriter(result);
StateObject first = new StateObject();
StateObject second = info.Channels > 1 ? new StateObject() : first;
StateObject[] states = { first, second };
int numSamples = (info.ExtSamplesPerBlock - 2) * info.Channels;
int numberOfBlocks = info.Data.Length / info.BlockAlign;
for (int blockIndex = 0; blockIndex < numberOfBlocks; blockIndex++)
{
for (int index = 0; index < info.Channels; index++)
{
states[index].predicator = reader.ReadByte();
}
for (int index = 0; index < info.Channels; index++)
{
states[index].delta = reader.ReadInt16();
}
for (int index = 0; index < info.Channels; index++)
{
states[index].sample1 = reader.ReadInt16();
}
for (int index = 0; index < info.Channels; index++)
{
states[index].sample2 = reader.ReadInt16();
// Write first samples directly from preamble
writer.Write(states[index].sample2);
}
// Write first samples directly from preamble
for (int index = 0; index < info.Channels; index++)
{
writer.Write(states[index].sample1);
}
// We decode the samples two at a time
for (int index = 0; index < numSamples; index += 2)
{
byte code = reader.ReadByte();
DecodeSample(first, code >> 4, writer);
DecodeSample(second, code & 0x0f, writer);
}
}
reader.Close();
writer.Close();
info.Data = result.ToArray();
result.Dispose();
}
#endregion
#region DecodeSample
private static void DecodeSample(StateObject state, int code,
BinaryWriter writer)
{
int linearSample =
((state.sample1 * AdaptCoeff1[state.predicator]) +
(state.sample2 * AdaptCoeff2[state.predicator])) / 256;
linearSample = linearSample + (state.delta *
((code & 0x08) == 0x08 ? (code - 0x10) : code));
state.sample2 = state.sample1;
// clamp predictor within signed 16-bit range
state.sample1 = (short)Math.Min(short.MaxValue,
Math.Max(short.MinValue, linearSample));
state.delta = (short)Math.Max(
(state.delta * AdaptationTable[code]) / 256, 16);
writer.Write(state.sample1);
}
#endregion
}
}

111
SoundSystems/ANX.SoundSystem.OpenAL/Wave/MuLaw.cs Normal file
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using System;
using System.IO;
using OpenTK.Audio;
// This file is part of the ANX.Framework and originally taken from
// the AC.AL OpenAL library, released under the MIT License.
// For details see: http://acal.codeplex.com/license
namespace ANX.SoundSystem.OpenAL
{
/// <summary>
/// http://www.threejacks.com/?q=node/176
/// </summary>
internal static class MuLaw
{
#region Decode Table
private static readonly short[] DecodeTable =
{
-32124,-31100,-30076,-29052,-28028,-27004,-25980,-24956,
-23932,-22908,-21884,-20860,-19836,-18812,-17788,-16764,
-15996,-15484,-14972,-14460,-13948,-13436,-12924,-12412,
-11900,-11388,-10876,-10364, -9852, -9340, -8828, -8316,
-7932, -7676, -7420, -7164, -6908, -6652, -6396, -6140,
-5884, -5628, -5372, -5116, -4860, -4604, -4348, -4092,
-3900, -3772, -3644, -3516, -3388, -3260, -3132, -3004,
-2876, -2748, -2620, -2492, -2364, -2236, -2108, -1980,
-1884, -1820, -1756, -1692, -1628, -1564, -1500, -1436,
-1372, -1308, -1244, -1180, -1116, -1052, -988, -924,
-876, -844, -812, -780, -748, -716, -684, -652,
-620, -588, -556, -524, -492, -460, -428, -396,
-372, -356, -340, -324, -308, -292, -276, -260,
-244, -228, -212, -196, -180, -164, -148, -132,
-120, -112, -104, -96, -88, -80, -72, -64,
-56, -48, -40, -32, -24, -16, -8, -1,
32124, 31100, 30076, 29052, 28028, 27004, 25980, 24956,
23932, 22908, 21884, 20860, 19836, 18812, 17788, 16764,
15996, 15484, 14972, 14460, 13948, 13436, 12924, 12412,
11900, 11388, 10876, 10364, 9852, 9340, 8828, 8316,
7932, 7676, 7420, 7164, 6908, 6652, 6396, 6140,
5884, 5628, 5372, 5116, 4860, 4604, 4348, 4092,
3900, 3772, 3644, 3516, 3388, 3260, 3132, 3004,
2876, 2748, 2620, 2492, 2364, 2236, 2108, 1980,
1884, 1820, 1756, 1692, 1628, 1564, 1500, 1436,
1372, 1308, 1244, 1180, 1116, 1052, 988, 924,
876, 844, 812, 780, 748, 716, 684, 652,
620, 588, 556, 524, 492, 460, 428, 396,
372, 356, 340, 324, 308, 292, 276, 260,
244, 228, 212, 196, 180, 164, 148, 132,
120, 112, 104, 96, 88, 80, 72, 64,
56, 48, 40, 32, 24, 16, 8, 0
};
#endregion
#region Encode Table
private static readonly byte[] EncodeTable =
{
0, 0, 1, 1, 2, 2, 2, 2, 3, 3, 3, 3, 3, 3, 3, 3,
4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4,
5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5,
5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5,
6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6,
6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6,
6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6,
6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6,
7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7,
7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7,
7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7,
7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7,
7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7,
7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7,
7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7,
7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7
};
#endregion
#region ConvertToMuLaw (TODO)
private static void ConvertToMuLaw(WaveInfo info)
{
//int sign = (sample >> 8) & 0x80;
//if (sign)
// sample = (short)-sample;
//if (sample > cClip)
// sample = cClip;
//sample = (short)(sample + cBias);
//int exponent = (int)MuLawCompressTable[(sample>>7) & 0xFF];
//int mantissa = (sample >> (exponent+3)) & 0x0F;
//int compressedByte = ~ (sign | (exponent << 4) | mantissa);
//return (unsigned char)compressedByte;
}
#endregion
#region ConvertToPcm
public static void ConvertToPcm(WaveInfo info)
{
info.OpenALFormat = info.Channels == 1 ?
ALFormat.Mono16 :
ALFormat.Stereo16;
MemoryStream destStream = new MemoryStream();
BinaryWriter destWriter = new BinaryWriter(destStream);
for (int index = 0; index < info.Data.Length; index++)
{
destWriter.Write(DecodeTable[info.Data[index]]);
}
destWriter.Close();
info.Data = destStream.ToArray();
destStream.Dispose();
}
#endregion
}
}

235
SoundSystems/ANX.SoundSystem.OpenAL/Wave/WaveFile.cs Normal file
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using System;
using System.IO;
using ANX.Framework.NonXNA;
using OpenTK.Audio;
// This file is part of the ANX.Framework and originally taken from
// the AC.AL OpenAL library, released under the MIT License.
// For details see: http://acal.codeplex.com/license
namespace ANX.SoundSystem.OpenAL
{
/// <summary>
/// This class contains all the loading process of a wave file.
/// <para />
/// http://www-mmsp.ece.mcgill.ca/documents/audioformats/wave/wave.html
/// <para />
/// Chunk information: http://www.sonicspot.com/guide/wavefiles.html
/// <para />
/// Audio Codecs: http://wiki.multimedia.cx/index.php?title=Category:Audio_Codecs
/// <para />
/// http://netghost.narod.ru/gff/vendspec/micriff/ms_riff.txt
/// <para />
/// Most interesting file about many formats:
/// http://icculus.org/SDL_sound/downloads/external_documentation/wavecomp.htm
/// <para />
/// http://sharkysoft.com/archive/lava/docs/javadocs/lava/riff/wave/doc-files/riffwave-content.htm
/// </summary>
public static class WaveFile
{
#region LoadData
/// <summary>
/// Load all information from a wave file.
/// </summary>
/// <param name="stream">The stream containing the wave file data.</param>
public static WaveInfo LoadData(Stream stream)
{
WaveInfo result = new WaveInfo();
using (BinaryReader reader = new BinaryReader(stream))
{
if (CheckHeader(reader) == false)
{
throw new FormatException("The provided stream is not a valid WAVE file. Unable to load!");
}
#region Read Chunks
while (stream.Position < stream.Length - 8)
{
string identifier = new string(reader.ReadChars(4));
int chunkLength = reader.ReadInt32();
if (stream.Position + chunkLength > stream.Length)
{
break;
}
int startPosition = (int)reader.BaseStream.Position;
switch (identifier.ToLower())
{
case "fmt ":
{
#region Load fmt chunk
result.WaveFormat = (WaveFormat)reader.ReadInt16();
result.Channels = reader.ReadInt16();
result.SampleRate = reader.ReadInt32();
int avgBytesPerSec = reader.ReadInt32();
result.BlockAlign = reader.ReadInt16();
result.BitsPerSample = reader.ReadInt16();
if (chunkLength > 16)
{
short extensionSize = reader.ReadInt16();
if (chunkLength > 18)
{
result.ExtSamplesPerBlock = reader.ReadInt16();
int speakerPositionMask = reader.ReadInt32();
WaveFormat extFormat = (WaveFormat)reader.ReadInt16();
if (result.WaveFormat < 0)
{
result.WaveFormat = extFormat;
}
byte[] subFormat = reader.ReadBytes(14);
}
}
result.OpenALFormat = (result.Channels == 1 ?
(result.BitsPerSample == 8 ?
ALFormat.Mono8 :
ALFormat.Mono16) :
(result.BitsPerSample == 8 ?
ALFormat.Stereo8 :
ALFormat.Stereo16));
#endregion
}
break;
case "fact":
{
#region Load fact chunk
// per channel
int numberOfSamples = reader.ReadInt32();
// TODO: more
#endregion
}
break;
case "data":
result.Data = reader.ReadBytes(chunkLength);
break;
}
// If some chunks are incorrect in data length, we ensure that we
// end up in the right position.
int lengthRead = (int)reader.BaseStream.Position - startPosition;
if (lengthRead != chunkLength)
{
reader.BaseStream.Seek(chunkLength - lengthRead,
SeekOrigin.Current);
}
}
#endregion
}
if (result.Data == null)
{
Logger.Error("There was no data chunk available. Unable to load!");
return null;
}
ConvertFormat(result);
return result;
}
#endregion
#region CheckHeader
private static bool CheckHeader(BinaryReader reader)
{
string RIFFmagic = new string(reader.ReadChars(4));
if(RIFFmagic != "RIFF")
{
return false;
}
// filesize
reader.ReadInt32();
string identifierWAVE = new string(reader.ReadChars(4));
if(identifierWAVE != "WAVE")
{
return false;
}
return true;
}
#endregion
#region ConvertFormat
private static void ConvertFormat(WaveInfo info)
{
switch (info.WaveFormat)
{
case WaveFormat.PCM:
#region Convert 32 to 16 bps (TODO)
//if (info.BitsPerSample == 32)
//{
// BinaryReader sourceReader =
// new BinaryReader(new MemoryStream(info.Data));
// MemoryStream destStream = new MemoryStream();
// BinaryWriter destWriter = new BinaryWriter(destStream);
// int length = info.Data.Length / 4;
// for (int index = 0; index < length; index++)
// {
// int value = sourceReader.ReadInt32();
// destWriter.Write((short)(value / 2));
// }
// sourceReader.Close();
// destWriter.Close();
// info.Data = destStream.ToArray();
// destStream.Dispose();
//}
#endregion
break;
case WaveFormat.ALAW:
ALaw.ConvertToPcm(info);
break;
case WaveFormat.MULAW:
MuLaw.ConvertToPcm(info);
break;
case WaveFormat.IEEE_FLOAT:
{
#region Convert float to pcm
bool is64BitFloat = info.BitsPerSample == 64;
BinaryReader sourceReader =
new BinaryReader(new MemoryStream(info.Data));
MemoryStream destStream = new MemoryStream();
BinaryWriter destWriter = new BinaryWriter(destStream);
int length = info.Data.Length / (is64BitFloat ? 8 : 4);
for (int index = 0; index < length; index++)
{
double value = is64BitFloat ?
sourceReader.ReadDouble() :
sourceReader.ReadSingle();
destWriter.Write((short)(value * 32767));
}
sourceReader.Close();
destWriter.Close();
info.Data = destStream.ToArray();
destStream.Dispose();
#endregion
}
break;
case WaveFormat.MS_ADPCM:
MsAdpcm.ConvertToPcm(info);
break;
default:
throw new NotSupportedException("The WAVE format " +
info.WaveFormat + " is not supported yet. Unable to load!");
}
}
#endregion
}
}

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SoundSystems/ANX.SoundSystem.OpenAL/Wave/WaveFormat.cs Normal file
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using System;
// This file is part of the ANX.Framework and originally taken from
// the AC.AL OpenAL library, released under the MIT License.
// For details see: http://acal.codeplex.com/license
namespace ANX.SoundSystem.OpenAL
{
public enum WaveFormat
{
PCM = 1,
/// <summary>
/// http://wiki.multimedia.cx/index.php?title=Microsoft_ADPCM
/// </summary>
MS_ADPCM = 2,
IEEE_FLOAT = 3,
/// <summary>
/// 8-bit ITU-T G.711 A-law
/// http://hazelware.luggle.com/tutorials/mulawcompression.html
/// </summary>
ALAW = 6,
/// <summary>
/// 8-bit ITU-T G.711 µ-law
/// http://hazelware.luggle.com/tutorials/mulawcompression.html
/// </summary>
MULAW = 7,
/// <summary>
/// Determined by SubFormat
/// </summary>
WAVE_FORMAT_EXTENSIBLE = 0xFFFE,
}
}

60
SoundSystems/ANX.SoundSystem.OpenAL/Wave/WaveInfo.cs Normal file
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using System;
using OpenTK.Audio;
// This file is part of the ANX.Framework and originally taken from
// the AC.AL OpenAL library, released under the MIT License.
// For details see: http://acal.codeplex.com/license
namespace ANX.SoundSystem.OpenAL
{
public class WaveInfo
{
public WaveFormat WaveFormat
{
get;
internal set;
}
public byte[] Data
{
get;
internal set;
}
public ALFormat OpenALFormat
{
get;
internal set;
}
public int SampleRate
{
get;
internal set;
}
public short BitsPerSample
{
get;
internal set;
}
public short BlockAlign
{
get;
internal set;
}
public int Channels
{
get;
internal set;
}
public short ExtSamplesPerBlock
{
get;
internal set;
}
}
}