public static int Loop(Sound sound, int sourceIndex, Vector2 position, float volume = 1.0f)
{
if (Disabled)
{
return(-1);
}
if (!MathUtils.IsValid(volume))
{
volume = 0.0f;
}
if (sourceIndex < 1 || soundsPlaying[sourceIndex] != sound)
{
sourceIndex = Play(sound, position, volume, 0.0f, true);
}
else
{
UpdateSoundPosition(sourceIndex, position, volume);
AL.Source(alSources[sourceIndex], ALSourceb.Looping, true);
}
ALHelper.Check();
return(sourceIndex);
}
public void Dispose()
{
var state = AL.GetSourceState(alSourceId);
if (state == ALSourceState.Playing || state == ALSourceState.Paused)
{
StopPlayback();
}
lock (prepareMutex)
{
OggStreamer.Instance.RemoveStream(this);
if (state != ALSourceState.Initial)
{
Empty();
}
Close();
underlyingStream.Dispose();
}
AL.DeleteSource(alSourceId);
AL.DeleteBuffers(alBufferIds);
/*if (ALHelper.Efx.IsInitialized)
* ALHelper.Efx.DeleteFilter(alFilterId);*/
ALHelper.Check();
}
public OggStream(Stream stream, int bufferCount = DefaultBufferCount)
{
BufferCount = bufferCount;
alBufferIds = AL.GenBuffers(bufferCount);
alSourceId = AL.GenSource();
if (ALHelper.XRam.IsInitialized)
{
ALHelper.XRam.SetBufferMode(BufferCount, ref alBufferIds[0], XRamExtension.XRamStorage.Hardware);
ALHelper.Check();
}
if (ALHelper.Efx.IsInitialized)
{
//alFilterId = ALHelper.Efx.GenFilter();
//ALHelper.Efx.Filter(alFilterId, EfxFilteri.FilterType, (int)EfxFilterType.Lowpass);
//ALHelper.Efx.Filter(alFilterId, EfxFilterf.LowpassGain, 1);
//ALHelper.Efx.BindFilterToSource(alSourceId, alFilterId);
//LowPassHFGain = 1;
}
underlyingStream = stream;
IsLooped = true;
}
public void Resume()
{
if (AL.GetSourceState(alSourceId) != ALSourceState.Paused)
{
return;
}
OggStreamer.Instance.AddStream(this);
AL.SourcePlay(alSourceId);
ALHelper.Check();
}
public void Pause()
{
if (AL.GetSourceState(alSourceId) != ALSourceState.Playing)
{
return;
}
OggStreamer.Instance.RemoveStream(this);
AL.SourcePause(alSourceId);
ALHelper.Check();
}
//public bool IsLooped { get; set; }
public static OggSound Load(string oggFile, int bufferCount = DefaultBufferCount)
{
OggSound sound = new OggSound();
sound.file = oggFile;
using (VorbisReader reader = new VorbisReader(oggFile))
{
int bufferSize = (int)reader.TotalSamples * reader.Channels;
float[] buffer = new float[bufferSize];
sound.castBuffer = new short[bufferSize];
int readSamples = reader.ReadSamples(buffer, 0, bufferSize);
CastBuffer(buffer, sound.castBuffer, readSamples);
sound.alBufferId = AL.GenBuffer();
sound.format = reader.Channels == 1 ? ALFormat.Mono16 : ALFormat.Stereo16;
sound.sampleRate = reader.SampleRate;
ALHelper.Check();
//alSourceId = AL.GenSource();
AL.BufferData(sound.alBufferId, reader.Channels == 1 ? ALFormat.Mono16 : ALFormat.Stereo16, sound.castBuffer,
readSamples * sizeof(short), reader.SampleRate);
ALHelper.Check(oggFile);
}
//AL.Source(alSourceId, ALSourcei.Buffer, alBufferId);
//if (ALHelper.XRam.IsInitialized)
//{
// ALHelper.XRam.SetBufferMode(bufferCount, ref alBufferId, XRamExtension.XRamStorage.Hardware);
// ALHelper.Check();
//}
//Volume = 1;
//if (ALHelper.Efx.IsInitialized)
//{
// alFilterId = ALHelper.Efx.GenFilter();
// ALHelper.Efx.Filter(alFilterId, EfxFilteri.FilterType, (int)EfxFilterType.Lowpass);
// ALHelper.Efx.Filter(alFilterId, EfxFilterf.LowpassGain, 1);
// LowPassHFGain = 1;
//}
return(sound);
}
public void Dispose()
{
//var state = AL.GetSourceState(alSourceId);
//if (state == ALSourceState.Playing || state == ALSourceState.Paused)
// Stop();
System.Diagnostics.Debug.WriteLine(alBufferId);
//AL.DeleteSource(alSourceId);
AL.DeleteBuffer(alBufferId);
//if (ALHelper.Efx.IsInitialized)
// ALHelper.Efx.DeleteFilter(alFilterId);
ALHelper.Check();
}
public void Dispose()
{
System.Diagnostics.Debug.WriteLine(alBufferId);
if (alBufferId > 0)
{
AL.DeleteBuffer(alBufferId);
alBufferId = 0;
}
//if (ALHelper.Efx.IsInitialized)
// ALHelper.Efx.DeleteFilter(alFilterId);
ALHelper.Check();
}
public bool FillBuffer(OggStream stream, int bufferId)
{
int readSamples;
lock (readMutex)
{
readSamples = stream.Reader.ReadSamples(readSampleBuffer, 0, BufferSize);
CastBuffer(readSampleBuffer, castBuffer, readSamples);
}
AL.BufferData(bufferId, stream.Reader.Channels == 1 ? ALFormat.Mono16 : ALFormat.Stereo16, castBuffer,
readSamples * sizeof(short), stream.Reader.SampleRate);
ALHelper.Check();
return(readSamples != BufferSize);
}
public static void Resume(int sourceIndex)
{
if (Disabled)
{
return;
}
if (AL.GetSourceState(alSources[sourceIndex]) != ALSourceState.Paused)
{
return;
}
AL.SourcePlay(alSources[sourceIndex]);
ALHelper.Check();
}
public static void Pause(int sourceIndex)
{
if (Disabled)
{
return;
}
if (AL.GetSourceState(alSources[sourceIndex]) != ALSourceState.Playing)
{
return;
}
AL.SourcePause(alSources[sourceIndex]);
ALHelper.Check(soundsPlaying[sourceIndex]?.FilePath);
}
internal void Open(bool precache = false)
{
underlyingStream.Seek(0, SeekOrigin.Begin);
Reader = new VorbisReader(underlyingStream, false);
if (precache)
{
// Fill first buffer synchronously
OggStreamer.Instance.FillBuffer(this, alBufferIds[0]);
AL.SourceQueueBuffer(alSourceId, alBufferIds[0]);
ALHelper.Check();
// Schedule the others asynchronously
OggStreamer.Instance.AddStream(this);
}
Ready = true;
}
public static OggStream StartStream(string file, float volume = 1.0f)
{
if (Disabled)
{
return(null);
}
if (oggStreamer == null)
{
oggStreamer = new OggStreamer();
}
oggStream = new OggStream(file);
oggStreamer.AddStream(oggStream);
oggStream.Play(volume);
ALHelper.Check();
return(oggStream);
}
public static void Dispose()
{
if (Disabled)
{
return;
}
if (ALHelper.Efx.IsInitialized)
{
ALHelper.Efx.DeleteFilter(lowpassFilterId);
}
for (int i = 0; i < DefaultSourceCount; i++)
{
var state = OpenTK.Audio.OpenAL.AL.GetSourceState(alSources[i]);
if (state == OpenTK.Audio.OpenAL.ALSourceState.Playing || state == OpenTK.Audio.OpenAL.ALSourceState.Paused)
{
Stop(i);
}
OpenTK.Audio.OpenAL.AL.DeleteSource(alSources[i]);
ALHelper.Check();
}
if (oggStream != null)
{
oggStream.Stop();
oggStream.Dispose();
oggStream = null;
}
if (oggStreamer != null)
{
oggStreamer.Dispose();
oggStreamer = null;
}
}
void Empty()
{
int queued;
AL.GetSource(alSourceId, ALGetSourcei.BuffersQueued, out queued);
ALHelper.Check();
if (queued > 0)
{
try
{
AL.SourceUnqueueBuffers(alSourceId, queued);
if (AL.GetError() != ALError.NoError)
{
throw new InvalidOperationException();
}
}
catch (InvalidOperationException)
{
// This is a bug in the OpenAL implementation
// Salvage what we can
int processed;
AL.GetSource(alSourceId, ALGetSourcei.BuffersProcessed, out processed);
var salvaged = new int[processed];
if (processed > 0)
{
AL.SourceUnqueueBuffers(alSourceId, processed, salvaged);
ALHelper.Check();
}
// Try turning it off again?
AL.SourceStop(alSourceId);
ALHelper.Check();
Empty();
}
}
}
public void Play(float volume)
{
var state = AL.GetSourceState(alSourceId);
switch (state)
{
case ALSourceState.Playing: return;
case ALSourceState.Paused:
Resume();
return;
}
Prepare();
AL.SourcePlay(alSourceId);
this.Volume = volume;
ALHelper.Check();
Preparing = false;
OggStreamer.Instance.AddStream(this);
}
public static void UpdateSoundPosition(int sourceIndex, Vector2 position, float baseVolume = 1.0f)
{
if (sourceIndex < 1 || Disabled)
{
return;
}
if (!MathUtils.IsValid(position))
{
position = Vector2.Zero;
}
position /= 1000.0f;
OpenTK.Audio.OpenAL.AL.Source(alSources[sourceIndex], OpenTK.Audio.OpenAL.ALSourcef.Gain, baseVolume * MasterVolume);
OpenTK.Audio.OpenAL.AL.Source(alSources[sourceIndex], OpenTK.Audio.OpenAL.ALSource3f.Position, position.X, position.Y, 0.0f);
float lowPassGain = lowPassHfGain / Math.Max(position.Length() * 5.0f, 1.0f);
ALHelper.Efx.Filter(lowpassFilterId, OpenTK.Audio.OpenAL.EfxFilterf.LowpassGainHF, lowPassGain);
ALHelper.Efx.BindFilterToSource(alSources[sourceIndex], lowpassFilterId);
ALHelper.Check();
}
public static void Init()
{
var availableDevices = AudioContext.AvailableDevices;
if (availableDevices.Count == 0)
{
DebugConsole.ThrowError("No audio devices found. Disabling audio playback.");
Disabled = true;
return;
}
try
{
AC = new AudioContext();
ALHelper.Check();
}
catch (DllNotFoundException)
{
Program.CrashMessageBox("OpenAL32.dll not found");
throw;
}
for (int i = 0; i < DefaultSourceCount; i++)
{
alSources.Add(OpenTK.Audio.OpenAL.AL.GenSource());
}
ALHelper.Check();
if (ALHelper.Efx.IsInitialized)
{
lowpassFilterId = ALHelper.Efx.GenFilter();
//alFilters.Add(alFilterId);
ALHelper.Efx.Filter(lowpassFilterId, OpenTK.Audio.OpenAL.EfxFilteri.FilterType, (int)OpenTK.Audio.OpenAL.EfxFilterType.Lowpass);
LowPassHFGain = 1.0f;
}
}
void StopPlayback()
{
AL.SourceStop(alSourceId);
ALHelper.Check();
}
void EnsureBuffersFilled()
{
while (!cancelled)
{
Thread.Sleep((int)(1000 / UpdateRate));
if (cancelled)
{
break;
}
threadLocalStreams.Clear();
lock (iterationMutex) threadLocalStreams.AddRange(streams);
foreach (var stream in threadLocalStreams)
{
lock (stream.prepareMutex)
{
lock (iterationMutex)
if (!streams.Contains(stream))
{
continue;
}
bool finished = false;
int queued;
AL.GetSource(stream.alSourceId, ALGetSourcei.BuffersQueued, out queued);
ALHelper.Check();
int processed;
AL.GetSource(stream.alSourceId, ALGetSourcei.BuffersProcessed, out processed);
ALHelper.Check();
if (processed == 0 && queued == stream.BufferCount)
{
continue;
}
int[] tempBuffers;
if (processed > 0)
{
tempBuffers = AL.SourceUnqueueBuffers(stream.alSourceId, processed);
}
else
{
tempBuffers = stream.alBufferIds.Skip(queued).ToArray();
}
for (int i = 0; i < tempBuffers.Length; i++)
{
finished |= FillBuffer(stream, tempBuffers[i]);
if (finished)
{
if (stream.IsLooped)
{
stream.Reader.DecodedTime = TimeSpan.Zero;
}
else
{
streams.Remove(stream);
i = tempBuffers.Length;
}
}
}
AL.SourceQueueBuffers(stream.alSourceId, tempBuffers.Length, tempBuffers);
ALHelper.Check();
if (finished && !stream.IsLooped)
{
continue;
}
}
lock (stream.stopMutex)
{
if (stream.Preparing)
{
continue;
}
lock (iterationMutex)
if (!streams.Contains(stream))
{
continue;
}
var state = AL.GetSourceState(stream.alSourceId);
if (state == ALSourceState.Stopped)
{
AL.SourcePlay(stream.alSourceId);
ALHelper.Check();
}
}
}
}
}
