internal void LoadSoundInMemory()
{
if (PreloadedBuffer.Ptr != IntPtr.Zero)
{
return;
}
using (var soundStream = ContentManager.FileProvider.OpenStream(CompressedDataUrl, VirtualFileMode.Open, VirtualFileAccess.Read, VirtualFileShare.Read, StreamFlags.Seekable))
using (var decoder = new Celt(SampleRate, CompressedSoundSource.SamplesPerFrame, Channels, true))
{
var reader = new BinarySerializationReader(soundStream);
var samplesPerPacket = CompressedSoundSource.SamplesPerFrame * Channels;
PreloadedBuffer = AudioLayer.BufferCreate(samplesPerPacket * NumberOfPackets * sizeof(short));
var memory = new UnmanagedArray <short>(samplesPerPacket * NumberOfPackets);
var offset = 0;
var outputBuffer = new short[samplesPerPacket];
for (var i = 0; i < NumberOfPackets; i++)
{
var len = reader.ReadInt16();
var compressedBuffer = reader.ReadBytes(len);
var samplesDecoded = decoder.Decode(compressedBuffer, len, outputBuffer);
memory.Write(outputBuffer, offset, 0, samplesDecoded * Channels);
offset += samplesDecoded * Channels * sizeof(short);
}
AudioLayer.BufferFill(PreloadedBuffer, memory.Pointer, memory.Length * sizeof(short), SampleRate, Channels == 1);
memory.Dispose();
}
}
public override void Serialize(ref Sound obj, ArchiveMode mode, SerializationStream stream)
{
if (mode == ArchiveMode.Deserialize)
{
var services = stream.Context.Tags.Get(ServiceRegistry.ServiceRegistryKey);
var audioEngine = services.GetServiceAs <IAudioEngineProvider>()?.AudioEngine;
obj.CompressedDataUrl = stream.ReadString();
obj.SampleRate = stream.ReadInt32();
obj.Channels = stream.ReadByte();
obj.StreamFromDisk = stream.ReadBoolean();
obj.Spatialized = stream.ReadBoolean();
obj.NumberOfPackets = stream.ReadInt16();
obj.MaxPacketLength = stream.ReadInt16();
if (!obj.StreamFromDisk && audioEngine != null && audioEngine.State != AudioEngineState.Invalidated && audioEngine.State != AudioEngineState.Disposed) //immediatelly preload all the data and decode
{
using (var soundStream = ContentManager.FileProvider.OpenStream(obj.CompressedDataUrl, VirtualFileMode.Open, VirtualFileAccess.Read, VirtualFileShare.Read, StreamFlags.Seekable))
using (var decoder = new Celt(obj.SampleRate, CompressedSoundSource.SamplesPerFrame, obj.Channels, true))
{
var reader = new BinarySerializationReader(soundStream);
var samplesPerPacket = CompressedSoundSource.SamplesPerFrame * obj.Channels;
obj.PreloadedBuffer = AudioLayer.BufferCreate(samplesPerPacket * obj.NumberOfPackets * sizeof(short));
var memory = new UnmanagedArray <short>(samplesPerPacket * obj.NumberOfPackets);
var offset = 0;
var outputBuffer = new short[samplesPerPacket];
for (var i = 0; i < obj.NumberOfPackets; i++)
{
var len = reader.ReadInt16();
var compressedBuffer = reader.ReadBytes(len);
var samplesDecoded = decoder.Decode(compressedBuffer, len, outputBuffer);
memory.Write(outputBuffer, offset, 0, samplesDecoded * obj.Channels);
offset += samplesDecoded * obj.Channels * sizeof(short);
}
AudioLayer.BufferFill(obj.PreloadedBuffer, memory.Pointer, memory.Length * sizeof(short), obj.SampleRate, obj.Channels == 1);
memory.Dispose();
}
}
if (audioEngine != null)
{
obj.Attach(audioEngine);
}
}
else
{
stream.Write(obj.CompressedDataUrl);
stream.Write(obj.SampleRate);
stream.Write((byte)obj.Channels);
stream.Write(obj.StreamFromDisk);
stream.Write(obj.Spatialized);
stream.Write((short)obj.NumberOfPackets);
stream.Write((short)obj.MaxPacketLength);
}
}
/// <summary>
/// Sub classes can implement their own streaming sources
/// </summary>
/// <param name="soundInstance">the sound instance associated</param>
/// <param name="numberOfBuffers">the size of the streaming ring-buffer</param>
/// <param name="maxBufferSizeBytes">the maximum size of each buffer</param>
protected DynamicSoundSource(SoundInstance soundInstance, int numberOfBuffers, int maxBufferSizeBytes)
{
SoundInstance = soundInstance;
for (var i = 0; i < numberOfBuffers; i++)
{
var buffer = AudioLayer.BufferCreate(maxBufferSizeBytes);
deviceBuffers.Add(buffer);
freeBuffers.Enqueue(deviceBuffers[i]);
}
}
/// <summary>
/// Sub classes can implement their own streaming sources.
/// </summary>
/// <param name="soundInstance">the sound instance associated.</param>
/// <param name="numberOfBuffers">the size of the streaming ring-buffer.</param>
/// <param name="maxBufferSizeBytes">the maximum size of each buffer.</param>
protected DynamicSoundSource(SoundInstance soundInstance, int numberOfBuffers, int maxBufferSizeBytes)
{
prebufferedTarget = (int)Math.Ceiling(numberOfBuffers / (double)3);
SoundInstance = soundInstance;
for (var i = 0; i < numberOfBuffers; i++)
{
var buffer = AudioLayer.BufferCreate(maxBufferSizeBytes);
deviceBuffers.Add(buffer);
freeBuffers.Enqueue(deviceBuffers[i]);
}
}