// use sound buffer
private static void UseSoundBuffer(int SoundBufferIndex)
{
if (OpenAlContext != ContextHandle.Zero)
{
if (SoundBufferIndex >= 0)
{
if (!SoundBuffers[SoundBufferIndex].TriedLoading)
{
SoundBuffers[SoundBufferIndex].TriedLoading = true;
if (!SoundBuffers[SoundBufferIndex].OpenAlBufferIndex.Valid)
{
try{
WaveParser.WaveData data = WaveParser.LoadFromFile(SoundBuffers[SoundBufferIndex].FileName);
data = WaveParser.ConvertToMono8Or16(data);
if (data.Format.BitsPerSample == 8)
{
int buffer;
AL.GenBuffers(1, out buffer);
AL.BufferData(buffer, ALFormat.Mono8, data.Bytes, data.Bytes.Length, data.Format.SampleRate);
SoundBuffers[SoundBufferIndex].OpenAlBufferIndex = new OpenAlIndex(buffer, true);
SoundBuffers[SoundBufferIndex].Duration = (double)data.Bytes.Length / (double)(data.Format.SampleRate);
}
else if (data.Format.BitsPerSample == 16)
{
int buffer;
AL.GenBuffers(1, out buffer);
AL.BufferData(buffer, ALFormat.Mono16, data.Bytes, data.Bytes.Length, data.Format.SampleRate);
SoundBuffers[SoundBufferIndex].OpenAlBufferIndex = new OpenAlIndex(buffer, true);
SoundBuffers[SoundBufferIndex].Duration = (double)data.Bytes.Length / (double)(2 * data.Format.SampleRate);
}
else
{
SoundBuffers[SoundBufferIndex].OpenAlBufferIndex = new OpenAlIndex(0, false);
}
} catch {
SoundBuffers[SoundBufferIndex].OpenAlBufferIndex = new OpenAlIndex(0, false);
}
}
}
}
}
}
public AudioStream LoadAudioOggVorbis(Stream stream, string name = null)
{
var vorbis = _readOggVorbis(stream);
var buffer = AL.GenBuffer();
ALFormat format;
// NVorbis only supports loading into floats.
// If this becomes a problem due to missing extension support (doubt it but ok),
// check the git history, I originally used libvorbisfile which worked and loaded 16 bit LPCM.
if (vorbis.Channels == 1)
{
format = ALFormat.MonoFloat32Ext;
}
else if (vorbis.Channels == 2)
{
format = ALFormat.StereoFloat32Ext;
}
else
{
throw new InvalidOperationException("Unable to load audio with more than 2 channels.");
}
unsafe
{
fixed(float *ptr = vorbis.Data.Span)
{
AL.BufferData(buffer, format, (IntPtr)ptr, vorbis.Data.Length * sizeof(float),
(int)vorbis.SampleRate);
}
}
_checkAlError();
var handle = new ClydeHandle(_audioSampleBuffers.Count);
_audioSampleBuffers.Add(new LoadedAudioSample(buffer));
var length = TimeSpan.FromSeconds(vorbis.TotalSamples / (double)vorbis.SampleRate);
return(new AudioStream(handle, length, (int)vorbis.Channels, name));
}
public static int LoadAudio(string filename)
{
if (String.IsNullOrEmpty(filename))
{
throw new ArgumentException(filename);
}
int buffer;
audioDictionary.TryGetValue(filename, out buffer);
if (buffer == 0)
{
buffer = AL.GenBuffer();
int channels, bits_per_sample, sample_rate;
byte[] sound_data = LoadWave(
File.Open(filename, FileMode.Open),
out channels,
out bits_per_sample,
out sample_rate
);
ALFormat sound_format =
channels == 1 && bits_per_sample == 8 ? ALFormat.Mono8 :
channels == 1 && bits_per_sample == 16 ? ALFormat.Mono16 :
channels == 2 && bits_per_sample == 8 ? ALFormat.Stereo8 :
channels == 2 && bits_per_sample == 16 ? ALFormat.Stereo16 :
(ALFormat)0; // unknown
AL.BufferData(buffer, sound_format, sound_data, sound_data.Length, sample_rate);
if (AL.GetError() != ALError.NoError)
{
// respond to load error etc.
Debug.Assert(true, "Failed to load audio");
}
else
{
audioDictionary.Add(filename, buffer);
}
}
return(buffer); //returns 0 if error?
}
public bool FillBuffer(OggStream stream, int bufferId)
{
OggStreamer.decodeLock.EnterWriteLock();
if (stream.IsDisposed)
{
OggStreamer.decodeLock.ExitWriteLock();
return(true);
}
else
{
int num = stream.Reader.ReadSamples(this.readSampleBuffer, 0, this.BufferSize);
for (int index = 0; index < num; ++index)
{
this.castBuffer[index] = (short)((double)short.MaxValue * (double)this.readSampleBuffer[index]);
}
AL.BufferData <short>(bufferId, stream.Reader.Channels == 1 ? ALFormat.Mono16 : ALFormat.Stereo16, this.castBuffer, num * 2, stream.Reader.SampleRate);
OggStreamer.decodeLock.ExitWriteLock();
return(num != this.BufferSize);
}
}
public unsafe void WriteBuffer(uint handle, ReadOnlySpan <ushort> data)
{
_checkDisposed();
if (_float)
{
throw new InvalidOperationException("Can't write ushort numbers to buffers when buffer type is float!");
}
if (handle >= BufferHandles.Length)
{
throw new ArgumentOutOfRangeException(nameof(handle),
$"Got {handle}. Expected less than {BufferHandles.Length}");
fixed(ushort *ptr = data)
{
AL.BufferData(BufferHandles[handle], _mono ? ALFormat.Mono16 : ALFormat.Stereo16, (IntPtr)ptr,
_mono ? data.Length / 2 * sizeof(ushort) : data.Length * sizeof(ushort), SampleRate);
}
}
public void RegisterSoundEffect(SoundEffect soundEffect)
{
if (this.allocatedBuffers.ContainsKey(soundEffect))
{
return;
}
if (this.freeBuffers.Count == 0)
{
this.ExpandBuffers();
}
Trace.WriteLine("[OpenAL] Pre-allocating buffer for " + soundEffect.Name);
OpenALSoundController.BufferAllocation bufferAllocation;
this.allocatedBuffers.Add(soundEffect, bufferAllocation = new OpenALSoundController.BufferAllocation()
{
BufferId = this.freeBuffers.Pop(),
SinceUnused = -1f
});
AL.BufferData <byte>(bufferAllocation.BufferId, soundEffect.Format, soundEffect._data, soundEffect.Size, soundEffect.Rate);
ALHelper.Check();
}
private void QueueBuffer(int buffer)
{
if (!_needsrefill)
{
return;
}
int len = (Speed > 0 ? _stream.ReadBuffer() : _stream.ReadBufferReversed());
if (len > 0)
{
AL.BufferData(buffer, _stream.Channels == 1 ? ALFormat.Mono16 : ALFormat.Stereo16, _stream.Buffer, len * sizeof(short), _stream.SampleRate);
AudioDevice.Check();
AL.SourceQueueBuffer(_alsourceid, buffer);
AudioDevice.Check();
}
if (len != _stream.SamplesPerBuffer)//we've reached the end
{
_needsrefill = false;
}
}
protected static Sound LoadWaveFileAbsolute(string title, string file_path)
{
if (!System.IO.File.Exists(file_path))
{
throw new FileNotFoundException("File missing: ", file_path);
}
int buffer_id = AL.GenBuffer();
int source_id = AL.GenSource();
// if(XRam.IsInitialized)
// XRam.SetBufferMode(1, ref buffer_id, XRamExtension.XRamStorage.Hardware);
int channels, bits_per_sample, sample_rate;
byte[] sound_data = LoadWave(File.Open(file_path, FileMode.Open), out channels, out bits_per_sample, out sample_rate);
AL.BufferData(buffer_id, GetSoundFormat(channels, bits_per_sample), sound_data, sound_data.Length, sample_rate);
AL.Source(source_id, ALSourcei.Buffer, buffer_id);
double duration = (double)sound_data.Length / (double)(sample_rate * channels * bits_per_sample / 8);
return((Sound)(Sounds[title] = new Sound(buffer_id, source_id, duration)));
}
public void Enqueue(string id, long packNumber, SoundPack pack)
{
if (string.IsNullOrEmpty(id))
{
throw new ArgumentException("id");
}
if (!IsInited)
{
return;
}
lock (_syncObject)
{
SourceDescription source;
if (!_sources.TryGetValue(id, out source))
{
int sourceId = AL.GenSource();
source = new SourceDescription(sourceId);
_sources.Add(id, source);
}
if (source.LastPlayedNumber > packNumber)
{
return;
}
source.LastPlayedNumber = packNumber;
int bufferId = AL.GenBuffer();
AL.BufferData(bufferId, source.GetFormat(pack), pack.Data, pack.Data.Length, pack.Frequency);
AL.SourceQueueBuffer(source.Id, bufferId);
if (AL.GetSourceState(source.Id) != ALSourceState.Playing)
{
AL.SourcePlay(source.Id);
}
ClearBuffers(source, 0);
}
}
public void SubmitBuffer(byte[] buffer, int offset, int count)
{
if (bufferIdsToFill != null)
{
AL.BufferData(bufferIdsToFill [currentBufferToFill], format, buffer, count, sampleRate);
AL.SourceQueueBuffer(sourceId, bufferIdsToFill [currentBufferToFill]);
currentBufferToFill++;
if (currentBufferToFill >= bufferIdsToFill.Length)
{
bufferIdsToFill = null;
}
else
{
OnBufferNeeded(EventArgs.Empty);
}
}
else
{
throw new Exception("Buffer already full.");
}
}
public static unsafe uint BufferFromWav(byte[] wave)
{
uint result;
AL.GenBuffers(1, out result);
byte[] data;
ALFormat format;
uint sampleRate;
AL.Utils.LoadWav(wave, out data, out format, out sampleRate);
fixed(byte *dataPtr = &data[0])
{
IntPtr dataIntPtr = new IntPtr(dataPtr);
AL.BufferData(result, format, dataIntPtr, data.Length, (int)sampleRate);
}
return(result);
}
private void Initialize(string filePath)
{
using (var fileStream = File.OpenRead(filePath))
{
using (var binaryReader = new BinaryReader(fileStream, Encoding.Unicode))
{
int channel;
int bit;
int rate;
ALFormat format;
byte[] data;
int dataLength;
binaryReader.ReadBytes(22);
channel = binaryReader.ReadUInt16();
rate = binaryReader.ReadInt32();
binaryReader.ReadBytes(6);
bit = binaryReader.ReadUInt16();
if (channel == 1)
{
format = bit == 8 ? ALFormat.Mono8 : ALFormat.Mono16;
}
else
{
format = bit == 8 ? ALFormat.Stereo8 : ALFormat.Stereo16;
}
binaryReader.ReadBytes(4);
dataLength = binaryReader.ReadInt32();
data = binaryReader.ReadBytes(dataLength);
BufferId = AL.GenBuffer();
AL.BufferData(BufferId, format, data, data.Length, rate);
SourceIndex = 0;
SourceIds = AL.GenSources(SourceIdMax);
for (int i = 0; i < SourceIds.Length; i++)
{
AL.Source(SourceIds[i], ALSourcei.Buffer, BufferId);
}
}
}
}
/// <summary>
/// Loads the provided audio file into game storage. If it already exists will return object.
/// </summary>
/// <param name="filename">File to load from</param>
/// <returns>Audio provide or Audio found if already exists</returns>
public static int LoadAudio(string filename)
{
int buffer;
audioDictionary.TryGetValue(filename, out buffer);
if (buffer == 0)
{
try
{
int channels, bits_per_sample, sample_rate;
// reserve a Handle for the audio file
buffer = AL.GenBuffer();
// Load a .wav file from disk.
//int channels, bits_per_sample, sample_rate;
byte[] sound_data = LoadWave(
File.Open(filename, FileMode.Open),
out channels,
out bits_per_sample,
out sample_rate);
ALFormat sound_format =
channels == 1 && bits_per_sample == 8 ? ALFormat.Mono8 :
channels == 1 && bits_per_sample == 16 ? ALFormat.Mono16 :
channels == 2 && bits_per_sample == 8 ? ALFormat.Stereo8 :
channels == 2 && bits_per_sample == 16 ? ALFormat.Stereo16 :
(ALFormat)0; // unknown
AL.BufferData(buffer, sound_format, sound_data, sound_data.Length, sample_rate);
string error = AL.GetError().ToString();
if (error != "NoError")
{
Console.WriteLine(error);
}
}
catch (Exception e)
{
Console.WriteLine(e.ToString());
}
}
return(buffer);
}
public void Load(Stream stream)
{
context = new AudioContext();
int state;
buffer = AL.GenBuffer();
source = AL.GenSource();
WaveData waveFile = new WaveData(stream);
AL.BufferData(buffer, waveFile.SoundFormat, waveFile.SoundData, waveFile.SoundData.Length, waveFile.SampleRate);
AL.Source(source, ALSourcei.Buffer, buffer);
AL.SourcePlay(source);
Console.WriteLine("Playing");
// Query the source to find out when it stops playing.
do
{
Thread.Sleep(250);
Console.Write(".");
AL.GetSource(source, ALGetSourcei.SourceState, out state);
}while ((ALSourceState)state == ALSourceState.Playing);
Console.WriteLine("FIN");
AL.SourceStop(source);
AL.DeleteSource(source);
AL.DeleteBuffer(buffer);
/* waveFile.dispose();
*
* AL.Source(source, ALSourcei.Buffer, buffer);
* AL.Source(source, ALSourceb.Looping, true);
* AL.GenSources(source);
*
* Console.WriteLine($"context {AudioContext.AvailableDevices.Count > 0}");
* Console.WriteLine($"GENERATING WAV SRC {source} {waveFile.SoundFormat} {waveFile.SampleRate}");*/
}
public void MainLoop(int samples, bool reverse)
{
unsafe
{
if (reverse)
{
short temp;
for (int i = 0; i < samples / 2; i++)
{
temp = buffer[i];
buffer[i] = buffer[samples - i];
buffer[samples - i] = temp;
}
}
int processedBuf = -1;
if (processed > 0)
{
AL.SourceUnqueueBuffers(sourceName, 1, ref processedBuf);
}
else
{
processedBuf = AL.GenBuffer();
activeBuffers.Add(processedBuf);
}
fixed(short *bufferPtr = buffer)
AL.BufferData(processedBuf, ALFormat.Mono16, (IntPtr)bufferPtr, samples * 2, sampleRate);
AL.SourceQueueBuffer(sourceName, processedBuf);
if (AL.GetSourceState(sourceName) != ALSourceState.Playing)
{
AL.SourcePlay(sourceName);
if (frame > frameDelay) //If the buffer runs out of stuff to play, frames are obviously being pushed too slow, but by the time that happens the audio will already be terrible so this isnt a good time to detect it.
{
tooSlow = true;
}
}
}
}
public void BufferData <T>(
ReadOnlySpan <T> data, ALFormat format, int sampleRate, int sampleAlignment = 0)
where T : unmanaged
{
AssertNotDisposed();
var controller = ALController.Get();
if (!controller.SupportsFloat32 && (format == ALFormat.MonoFloat32 || format == ALFormat.StereoFloat32))
{
throw new InvalidOperationException("Float data is not supported by this OpenAL driver.");
}
if (!controller.SupportsAdpcm && (format == ALFormat.MonoMSAdpcm || format == ALFormat.StereoMSAdpcm))
{
throw new InvalidOperationException("MS-ADPCM is not supported by this OpenAL driver.");
}
if (!controller.SupportsIma4 && (format == ALFormat.MonoIma4 || format == ALFormat.StereoIma4))
{
throw new InvalidOperationException("IMA/ADPCM is not supported by this OpenAL driver.");
}
if (BufferId != 0)
{
ClearBuffer();
}
BufferId = AL.GenBuffer();
ALHelper.CheckError("Failed to generate OpenAL data buffer.");
if (sampleAlignment > 0)
{
AL.Bufferi(BufferId, ALBufferi.UnpackBlockAlignmentSoft, sampleAlignment);
ALHelper.CheckError("Failed to set buffer alignment.");
}
AL.BufferData(BufferId, format, MemoryMarshal.AsBytes(data), sampleRate);
ALHelper.CheckError("Failed to fill buffer.");
}
/// <summary>
/// (Internal) Constructor.
/// </summary>
/// <param name="waveFileBytes">Bytes for a PCM Wave file to use for this sound</param>
internal AudioPlayerSound(byte[] waveFileBytes)
{
Buffer = AL.GenBuffer();
IsValid = true;
using (MemoryStream ms = new MemoryStream(waveFileBytes))
{
byte[] soundData = LoadWave(ms, out int channels, out int bitsPerSample, out int sampleRate);
if (soundData == null)
{
IsValid = false; Dispose(); return;
}
ALFormat?soundFormat = GetSoundFormat(channels, bitsPerSample);
if (!soundFormat.HasValue)
{
IsValid = false; Dispose(); return;
}
AL.BufferData(Buffer, soundFormat.Value, soundData, soundData.Length, sampleRate);
}
}
private void Update(int channelCount, int sampleRate)
{
// Check parameters
if (channelCount <= 0 || sampleRate <= 0)
{
throw new ArgumentException();
}
// Find the best format according to the number of channels
var format = AudioDevice.GetFormat(channelCount);
if (format == 0)
{
throw new Exception("Failed to load sound buffer (unsupported number of channels: " + channelCount.ToString() + ")");
}
// First make a copy of the list of sounds so we can reattach later
var sounds = new List <Sound>(_sounds);
// Detach the buffer from the sounds that use it (to avoid OpenAL errors)
foreach (var sound in sounds)
{
sound.ResetBuffer();
}
// fill the buffer
int size = _samples.Length * sizeof(short);
ALChecker.Check(() => AL.BufferData(_buffer, format, _samples, size, sampleRate));
// Compute the duration
_duration = TimeSpan.FromSeconds((float)_samples.Length / sampleRate / channelCount);
// Now reattach the buffer to the sounds that use it
foreach (var sound in sounds)
{
sound.Buffer = this;
}
}
/// <summary>
/// Playback a file
/// </summary>
/// <param name="unencodedData">Raw byte data</param>
/// <param name="recordingFormat">Format of data</param>
/// <param name="sampleFrequency">Frequency sampling of data</param>
public void PlayFile(byte[] unencodedData, ALFormat recordingFormat, int sampleFrequency)
{
int[] uiBuffers = new int[4];
int uiSource;
uiBuffers = AL.GenBuffers(uiBuffers.Length);
uiSource = AL.GenSource();
alError = AL.GetError();
AL.BufferData(uiBuffers[0], recordingFormat, unencodedData, unencodedData.Length, sampleFrequency);
alError = AL.GetError();
AL.SourceQueueBuffers(uiSource, 1, uiBuffers);
alError = AL.GetError();
AL.SourcePlay(uiSource);
alError = AL.GetError();
}
private static void PrepareOpenAL()
{
audioDevice = ALC.OpenDevice(null);
audioContext = ALC.CreateContext(audioDevice, null);
if (!ALC.MakeContextCurrent(audioContext))
{
throw new InvalidOperationException("Unable to make context current");
}
Console.WriteLine("Created audio context.");
CheckALErrors();
const string AudioFile = "Audio.raw";
if (!File.Exists(AudioFile))
{
Console.WriteLine($"No {AudioFile} found.");
return;
}
//Buffer
AL.GenBuffer(out uint bufferId);
byte[] data = File.ReadAllBytes(AudioFile);
AL.BufferData(bufferId, BufferFormat.Stereo16, data, data.Length, 44100);
//Source
AL.GenSource(out uint sourceId);
AL.Source(sourceId, SourceInt.Buffer, (int)bufferId);
AL.Source(sourceId, SourceBool.Looping, true);
AL.SourcePlay(sourceId);
Console.WriteLine($"Played {AudioFile}.");
}
public void LoadSound(Stream stream)
{
int channels;
int bitsPerSample;
int sampleRate;
byte[] data = IOUtils.LoadSound(stream, out channels, out bitsPerSample, out sampleRate);
ALFormat format = channels == 1 && bitsPerSample == 8 ? ALFormat.Mono8 : channels == 1 && bitsPerSample == 16 ? ALFormat.Mono16 : channels == 2 && bitsPerSample == 8 ? ALFormat.Stereo8 : channels == 2 && bitsPerSample == 16 ? ALFormat.Stereo16 : (ALFormat)0;
int buffer = AL.GenBuffer();
AL.BufferData(buffer, format, data, data.Length, sampleRate);
sound = AL.GenSource();
AL.Source(sound, ALSourcei.Buffer, buffer);
AL.DeleteBuffer(buffer);
initialized = true;
}
public static int LoadSound(string filename)
{
if (String.IsNullOrEmpty(filename))
{
throw new ArgumentException(filename);
}
int sound;
soundDictionary.TryGetValue(filename, out sound);
if (sound == 0)
{
// reserve a Handle for the audio file
sound = AL.GenBuffer();
soundDictionary.Add(filename, sound);
// Load a .wav file from disk.
int channels, bits_per_sample, sample_rate;
byte[] sound_data = LoadWave(
File.Open(filename, FileMode.Open),
out channels,
out bits_per_sample,
out sample_rate);
ALFormat sound_format =
channels == 1 && bits_per_sample == 8 ? ALFormat.Mono8 :
channels == 1 && bits_per_sample == 16 ? ALFormat.Mono16 :
channels == 2 && bits_per_sample == 8 ? ALFormat.Stereo8 :
channels == 2 && bits_per_sample == 16 ? ALFormat.Stereo16 :
(ALFormat)0; // unknown
AL.BufferData(sound, sound_format, sound_data, sound_data.Length, sample_rate);
if (AL.GetError() != ALError.NoError)
{
Console.WriteLine("Error");
// respond to load error etc.
}
}
return(sound);
}
public unsafe void SetData <T>(T[] data, int channelsNum, int bytesPerSample, int sampleRate) where T : unmanaged
{
if (data == null)
{
throw new ArgumentNullException(nameof(data));
}
this.channelsNum = channelsNum;
this.bytesPerSample = bytesPerSample;
this.sampleRate = sampleRate;
LengthInSeconds = data.Length / (float)sampleRate / channelsNum;
var format = GetSoundFormat(channelsNum, bytesPerSample);
fixed(T *ptr = data)
{
AL.BufferData(bufferId, format, (IntPtr)ptr, data.Length * Marshal.SizeOf <T>(), sampleRate);
}
AudioEngine.CheckALErrors();
}
private unsafe static uint BufferFromOgg(VorbisReader vorbis)
{
uint result;
AL.GenBuffers(1, out result);
byte[] data;
ALFormat format;
uint sampleRate;
TimeSpan len;
LoadOgg(vorbis, out data, out format, out sampleRate, out len);
fixed(byte *dataPtr = &data[0])
{
IntPtr dataIntPtr = new IntPtr(dataPtr);
AL.BufferData(result, format, dataIntPtr, data.Length, (int)sampleRate);
}
return(result);
}
public override Buffer CreateResource(ResourceManager resourceManager)
{
var buffer = base.CreateResource(resourceManager);
using (var reader = new BinaryReader(OpenResource(FileName)))
{
RiffHeader header;
RiffReader.ReadHeader(reader, out header);
var format = header.GetFormat();
var sampleData = new byte[header.DataLength];
var bytesRead = reader.Read(sampleData, 0, sampleData.Length);
if (bytesRead < sampleData.Length)
{
throw new InvalidOperationException("Unable to read audio data. Sound WAV file may be corrupted or truncated.");
}
AL.BufferData(buffer.Id, format, sampleData, sampleData.Length, (int)header.SampleRate);
}
return(buffer);
}
public static int CreateBufferFromFile(string file)
{
using (System.IO.Stream stream = FileSystem.Open(file))
{
WavFile wav = new WavFile(stream);
int buffer;
AL.GenBuffers(1, out buffer);
ALFormat format;
if (wav.Channels == 1)
{
if (wav.SampleSize == 8)
{
format = ALFormat.Mono8;
}
else
{
format = ALFormat.Mono16;
}
}
else
{
if (wav.SampleSize == 8)
{
format = ALFormat.Stereo8;
}
else
{
format = ALFormat.Stereo16;
}
}
AL.BufferData(buffer, format, wav.PcmData, wav.Length, wav.SampleRate);
return(buffer);
}
}
void INativeAudioBuffer.LoadData <T>(int sampleRate, T[] data, int dataLength, AudioDataLayout dataLayout, AudioDataElementType dataElementType)
{
ALFormat format = ALFormat.Mono16;
if (dataLayout == AudioDataLayout.Mono)
{
if (dataElementType == AudioDataElementType.Byte)
{
format = ALFormat.Mono8;
}
else if (dataElementType == AudioDataElementType.Short)
{
format = ALFormat.Mono16;
}
}
else if (dataLayout == AudioDataLayout.LeftRight)
{
if (dataElementType == AudioDataElementType.Byte)
{
format = ALFormat.Stereo8;
}
else if (dataElementType == AudioDataElementType.Short)
{
format = ALFormat.Stereo16;
}
}
int sizeOfElement = System.Runtime.InteropServices.Marshal.SizeOf(typeof(T));
AL.BufferData(
this.handle,
format,
data,
dataLength * sizeOfElement,
sampleRate);
//AudioBackend.CheckOpenALErrors();
}
// New for Audio
public static int LoadAudio(string filename)
{
int audioBuffer;
//checking to see if buffer exists
audioDictionary.TryGetValue(filename, out audioBuffer);
if (audioBuffer == 0)
{
// reserve a Handle for the audio file
audioBuffer = AL.GenBuffer();
audioDictionary.Add(filename, audioBuffer);
// Load a .wav file from disk.
int channels, bits_per_sample, sample_rate;
byte[] sound_data = LoadWave(
File.Open(filename, FileMode.Open),
out channels,
out bits_per_sample,
out sample_rate);
ALFormat sound_format =
channels == 1 && bits_per_sample == 8 ? ALFormat.Mono8 :
channels == 1 && bits_per_sample == 16 ? ALFormat.Mono16 :
channels == 2 && bits_per_sample == 8 ? ALFormat.Stereo8 :
channels == 2 && bits_per_sample == 16 ? ALFormat.Stereo16 :
(ALFormat)0; // unknown
AL.BufferData(audioBuffer, sound_format, sound_data, sound_data.Length, sample_rate);
if (AL.GetError() != ALError.NoError)
{
// respond to load error etc.
}
}
return(audioBuffer);
}
public override void QueueBuffer(AudioBuffer buffer)
{
lock (_lock)
{
OpenALAudioBuffer driverBuffer = new OpenALAudioBuffer
{
DriverIdentifier = buffer.DataPointer,
BufferId = AL.GenBuffer(),
SampleCount = GetSampleCount(buffer)
};
AL.BufferData(driverBuffer.BufferId, _targetFormat, buffer.Data, (int)RequestedSampleRate);
_queuedBuffers.Enqueue(driverBuffer);
AL.SourceQueueBuffer(_sourceId, driverBuffer.BufferId);
if (_isActive)
{
StartIfNotPlaying();
}
}
}
internal void SubmitFloatBuffer(float[] buffer, int channels, int sampleRate)
{
/* For more on why this delicious copypasta is here, see the
* internal constructor.
* -flibit
*/
// Generate a buffer if we don't have any to use.
if (availableBuffers.Count == 0)
{
availableBuffers.Enqueue(AL.GenBuffer());
}
// Push the data to OpenAL.
int newBuf = availableBuffers.Dequeue();
AL.BufferData(
newBuf,
(channels == 2) ? ALFormat.StereoFloat32Ext : ALFormat.MonoFloat32Ext,
buffer,
buffer.Length * 2 * channels,
sampleRate
);
// If we're already playing, queue immediately.
if (State == SoundState.Playing)
{
AL.SourceQueueBuffer(INTERNAL_alSource, newBuf);
queuedBuffers.Enqueue(newBuf);
}
else
{
buffersToQueue.Enqueue(newBuf);
}
PendingBufferCount += 1;
}
