public void Execute(ref ExecuteContext<Parameters, SampleProviders> context)
{
bool bufferStarved = false;
m_currentSubframe++;
if (m_currentSubframe >= m_ildBuffer.subframesPerFrame)
{
m_currentSubframe = 0;
m_currentFrame++;
m_ildBuffer = m_queuedIldBuffer;
m_lastPlayedBufferID = m_ildBuffer.bufferId; //we need to report the buffer we just consumed, the audio system knows to keep that one around yet
}
for (int outputChannelIndex = 0; outputChannelIndex < context.Outputs.Count; outputChannelIndex++)
{
var channelOutput = context.Outputs.GetSampleBuffer(outputChannelIndex);
if (channelOutput.Channels <= 0)
continue;
var outputBuffer = channelOutput.GetBuffer(0);
if (m_ildBuffer.channelCount <= outputChannelIndex)
{
for (int i = 0; i < outputBuffer.Length; i++)
{
outputBuffer[i] = 0f;
}
}
else if (m_currentFrame - m_ildBuffer.frame >= m_ildBuffer.framesInBuffer)
{
for (int i = 0; i < outputBuffer.Length; i++)
{
outputBuffer[i] = 0f;
}
bufferStarved = true;
}
else
{
var ildBufferChannel = m_ildBuffer.bufferChannels[outputChannelIndex];
int bufferOffset = m_ildBuffer.subframesPerFrame * (m_currentFrame - m_ildBuffer.frame) + m_currentSubframe;
bufferOffset *= outputBuffer.Length;
for (int i = 0; i < outputBuffer.Length; i++)
{
outputBuffer[i] = ildBufferChannel.buffer[bufferOffset + i];
}
}
}
if (bufferStarved && m_ildBuffer.warnIfStarved)
{
UnityEngine.Debug.LogWarning(
$"Dsp buffer starved. Kernel frame: {m_currentFrame}, IldBuffer frame: {m_ildBuffer.frame}, ildBuffer Id: {m_ildBuffer.bufferId}, frames in buffer: {m_ildBuffer.framesInBuffer}, subframe: {m_currentSubframe}/{m_ildBuffer.subframesPerFrame}");
}
if (m_currentSubframe == 0)
{
long packed = m_currentFrame + (((long)m_lastPlayedBufferID) << 32);
ref long location = ref UnsafeUtility.AsRef<long>(m_packedFrameCounterBufferId);
Interlocked.Exchange(ref location, packed);
}
public void Initialize()
{
//We start on frame 1 so that a buffer ID and frame of both 0 means uninitialized.
//The audio components use this at the time of writing this comment.
m_currentFrame = 1;
m_currentSubframe = 0;
m_lastPlayedBufferID = -1;
m_ildBuffer = default;
m_queuedIldBuffer = default;
}
