void XnFrameStreamProcessor::OnStartOfFrame(const XnSensorProtocolResponseHeader* /*pHeader*/)
{
m_bFrameCorrupted = FALSE;
m_pTripleBuffer->GetWriteBuffer()->Reset();
if (m_pDevicePrivateData->pSensor->ShouldUseHostTimestamps())
{
m_nFirstPacketTimestamp = GetHostTimestamp();
}
}
void XnAudioProcessor::ProcessWholePacket(const XnSensorProtocolResponseHeader* pHeader, const XnUChar* pData)
{
xnOSEnterCriticalSection(&m_pBuffer->hLock);
// take write packet
XnUChar* pWritePacket = m_pBuffer->pAudioBuffer + (m_pBuffer->nAudioWriteIndex * m_pBuffer->nAudioPacketSize);
if (m_bDeleteChannel)
{
XnUInt16* pSamples = (XnUInt16*)pData;
XnUInt16* pSamplesEnd = (XnUInt16*)(pData + pHeader->nBufSize);
XnUInt16* pOutput = (XnUInt16*)pWritePacket;
while (pSamples < pSamplesEnd)
{
*pOutput = *pSamples;
pOutput++;
// skip a sample
pSamples += 2;
}
}
else
{
// copy data
xnOSMemCopy(pWritePacket, pData, pHeader->nBufSize);
}
// mark timestamp
if (ShouldUseHostTimestamps())
{
m_pBuffer->pAudioPacketsTimestamps[m_pBuffer->nAudioWriteIndex] = GetHostTimestamp();
}
else
{
m_pBuffer->pAudioPacketsTimestamps[m_pBuffer->nAudioWriteIndex] = CreateTimestampFromDevice(pHeader->nTimeStamp);
}
if (m_nLastPacketID % 10 == 0)
{
XnUInt64 nSysTime;
xnOSGetTimeStamp(&nSysTime);
xnDumpFileWriteString(m_pDevicePrivateData->BandwidthDump, "%llu,%s,%d,%d\n",
nSysTime, "Audio", -1, m_nBytesReceived);
m_nBytesReceived = 0;
}
// move write index forward
m_pBuffer->nAudioWriteIndex = (m_pBuffer->nAudioWriteIndex + 1) % m_pBuffer->nAudioBufferNumOfPackets;
// if write index got to read index (end of buffer), move read index forward (and loose a packet)
if (m_pBuffer->nAudioWriteIndex == m_pBuffer->nAudioReadIndex)
{
m_pBuffer->nAudioReadIndex = (m_pBuffer->nAudioReadIndex + 1) % m_pBuffer->nAudioBufferNumOfPackets;
}
xnOSLeaveCriticalSection(&m_pBuffer->hLock);
xnDumpFileWriteBuffer(m_AudioInDump, pData, pHeader->nBufSize);
if (m_pBuffer->pAudioCallback != NULL)
{
m_pBuffer->pAudioCallback(m_pBuffer->pAudioCallbackCookie);
}
}
