public void SubmitBuffer(byte[] buffer, int offset, int count)
{
IntPtr next = Marshal.AllocHGlobal(count);
Marshal.Copy(buffer, offset, next, count);
queuedBuffers.Add(next);
if (State != SoundState.Stopped)
{
FAudio.FAudioBuffer buf = new FAudio.FAudioBuffer();
buf.AudioBytes = (uint)count;
buf.pAudioData = next;
buf.PlayLength = (
buf.AudioBytes /
(uint)channels /
(uint)(format.wBitsPerSample / 8)
);
FAudio.FAudioSourceVoice_SubmitSourceBuffer(
handle,
ref buf,
IntPtr.Zero
);
}
else
{
queuedSizes.Add((uint)count);
}
}
public void SubmitFloatBufferEXT(float[] buffer, int offset, int count)
{
/* Float samples are the typical format received from decoders.
* We currently use this for the VideoPlayer.
* -flibit
*/
if (State != SoundState.Stopped && format.wFormatTag == 1)
{
throw new InvalidOperationException(
"Submit a float buffer before Playing!"
);
}
format.wFormatTag = 3;
format.wBitsPerSample = 32;
format.nBlockAlign = (ushort)(4 * format.nChannels);
format.nAvgBytesPerSec = format.nBlockAlign * format.nSamplesPerSec;
IntPtr next = Marshal.AllocHGlobal(count * sizeof(float));
Marshal.Copy(buffer, offset, next, count);
lock (queuedBuffers)
{
queuedBuffers.Add(next);
if (State != SoundState.Stopped)
{
FAudio.FAudioBuffer buf = new FAudio.FAudioBuffer();
buf.AudioBytes = (uint)count * sizeof(float);
buf.pAudioData = next;
buf.PlayLength = (
buf.AudioBytes /
(uint)channels /
(uint)(format.wBitsPerSample / 8)
);
FAudio.FAudioSourceVoice_SubmitSourceBuffer(
handle,
ref buf,
IntPtr.Zero
);
}
else
{
queuedSizes.Add((uint)count * sizeof(float));
}
}
}
internal void QueueInitialBuffers()
{
FAudio.FAudioBuffer buffer = new FAudio.FAudioBuffer();
for (int i = 0; i < queuedBuffers.Count; i += 1)
{
buffer.AudioBytes = queuedSizes[i];
buffer.pAudioData = queuedBuffers[i];
buffer.PlayLength = (
buffer.AudioBytes /
(uint)channels /
(uint)(format.wBitsPerSample / 8)
);
FAudio.FAudioSourceVoice_SubmitSourceBuffer(
handle,
ref buffer,
IntPtr.Zero
);
}
queuedSizes.Clear();
}
internal SoundEffect(
string name,
byte[] buffer,
int offset,
int count,
ushort wFormatTag,
ushort nChannels,
uint nSamplesPerSec,
uint nAvgBytesPerSec,
ushort nBlockAlign,
ushort wBitsPerSample,
int loopStart,
int loopLength
)
{
Device();
Name = name;
this.loopStart = (uint)loopStart;
this.loopLength = (uint)loopLength;
/* Buffer format */
format = new FAudio.FAudioWaveFormatEx();
format.wFormatTag = wFormatTag;
format.nChannels = nChannels;
format.nSamplesPerSec = nSamplesPerSec;
format.nAvgBytesPerSec = nAvgBytesPerSec;
format.nBlockAlign = nBlockAlign;
format.wBitsPerSample = wBitsPerSample;
format.cbSize = 0; /* May be needed for ADPCM? */
/* Easy stuff */
handle = new FAudio.FAudioBuffer();
handle.Flags = FAudio.FAUDIO_END_OF_STREAM;
handle.pContext = IntPtr.Zero;
/* Buffer data */
handle.AudioBytes = (uint)count;
handle.pAudioData = Marshal.AllocHGlobal(count);
Marshal.Copy(
buffer,
offset,
handle.pAudioData,
count
);
/* Play regions */
handle.PlayBegin = 0;
if (wFormatTag == 1)
{
handle.PlayLength = (uint)(
count /
nChannels /
(wBitsPerSample / 8)
);
}
else if (wFormatTag == 2)
{
handle.PlayLength = (uint)(
count /
nBlockAlign *
(((nBlockAlign / nChannels) - 6) * 2)
);
}
/* Set by Instances! */
handle.LoopBegin = 0;
handle.LoopLength = 0;
handle.LoopCount = 0;
}
internal unsafe SoundEffect(
string name,
byte[] buffer,
int offset,
int count,
byte[] extraData,
ushort wFormatTag,
ushort nChannels,
uint nSamplesPerSec,
uint nAvgBytesPerSec,
ushort nBlockAlign,
ushort wBitsPerSample,
int loopStart,
int loopLength
)
{
Device();
Name = name;
channels = nChannels;
sampleRate = nSamplesPerSec;
this.loopStart = (uint)loopStart;
this.loopLength = (uint)loopLength;
/* Buffer format */
if (extraData == null)
{
formatPtr = Marshal.AllocHGlobal(
Marshal.SizeOf(typeof(FAudio.FAudioWaveFormatEx))
);
}
else
{
formatPtr = Marshal.AllocHGlobal(
Marshal.SizeOf(typeof(FAudio.FAudioWaveFormatEx)) +
extraData.Length
);
Marshal.Copy(
extraData,
0,
formatPtr + Marshal.SizeOf(typeof(FAudio.FAudioWaveFormatEx)),
extraData.Length
);
}
FAudio.FAudioWaveFormatEx *pcm = (FAudio.FAudioWaveFormatEx *)formatPtr;
pcm->wFormatTag = wFormatTag;
pcm->nChannels = nChannels;
pcm->nSamplesPerSec = nSamplesPerSec;
pcm->nAvgBytesPerSec = nAvgBytesPerSec;
pcm->nBlockAlign = nBlockAlign;
pcm->wBitsPerSample = wBitsPerSample;
pcm->cbSize = (ushort)((extraData == null) ? 0 : extraData.Length);
/* Easy stuff */
handle = new FAudio.FAudioBuffer();
handle.Flags = FAudio.FAUDIO_END_OF_STREAM;
handle.pContext = IntPtr.Zero;
/* Buffer data */
handle.AudioBytes = (uint)count;
handle.pAudioData = Marshal.AllocHGlobal(count);
Marshal.Copy(
buffer,
offset,
handle.pAudioData,
count
);
/* Play regions */
handle.PlayBegin = 0;
if (wFormatTag == 1)
{
handle.PlayLength = (uint)(
count /
nChannels /
(wBitsPerSample / 8)
);
}
else if (wFormatTag == 2)
{
handle.PlayLength = (uint)(
count /
nBlockAlign *
(((nBlockAlign / nChannels) - 6) * 2)
);
}
else if (wFormatTag == 0x166)
{
FAudio.FAudioXMA2WaveFormatEx *xma2 = (FAudio.FAudioXMA2WaveFormatEx *)formatPtr;
// dwSamplesEncoded / nChannels / (wBitsPerSample / 8) doesn't always (if ever?) match up.
handle.PlayLength = xma2->dwPlayLength;
}
/* Set by Instances! */
handle.LoopBegin = 0;
handle.LoopLength = 0;
handle.LoopCount = 0;
}
