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Remote output: variable sample size in transmission. For now fixed to 16

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This commit is contained in:
f4exb
2021-12-18 22:49:05 +01:00
parent 316e635466
commit 6cc1616cb8
2 changed files with 69 additions and 13 deletions
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plugins/samplesink/remoteoutput/udpsinkfec.cpp
+29 -13
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@@ -31,6 +31,8 @@ UDPSinkFEC::UDPSinkFEC() :
m_sampleRate(48000),
m_nbSamples(0),
m_nbBlocksFEC(0),
//m_nbTxBytes(SDR_RX_SAMP_SZ <= 16 ? 2 : 4),
m_nbTxBytes(2),
m_txDelayRatio(0.0),
m_dataFrame(nullptr),
m_txBlockIndex(0),
@@ -108,8 +110,8 @@ void UDPSinkFEC::write(const SampleVector::iterator& begin, uint32_t sampleChunk
metaData.m_centerFrequency = 0; // frequency not set by stream
metaData.m_sampleRate = m_sampleRate;
metaData.m_sampleBytes = (SDR_RX_SAMP_SZ <= 16 ? 2 : 4);
metaData.m_sampleBits = SDR_RX_SAMP_SZ;
metaData.m_sampleBytes = m_nbTxBytes;;
metaData.m_sampleBits = getNbSampleBits();
metaData.m_nbOriginalBlocks = RemoteNbOrginalBlocks;
metaData.m_nbFECBlocks = m_nbBlocksFEC;
metaData.m_tv_sec = nowus / 1000000UL; // tv.tv_sec;
@@ -126,8 +128,8 @@ void UDPSinkFEC::write(const SampleVector::iterator& begin, uint32_t sampleChunk
superBlock.init();
superBlock.m_header.m_frameIndex = m_frameCount;
superBlock.m_header.m_blockIndex = m_txBlockIndex;
superBlock.m_header.m_sampleBytes = (SDR_RX_SAMP_SZ <= 16 ? 2 : 4);
superBlock.m_header.m_sampleBits = SDR_RX_SAMP_SZ;
superBlock.m_header.m_sampleBytes = m_nbTxBytes;
superBlock.m_header.m_sampleBits = getNbSampleBits();
RemoteMetaDataFEC *destMeta = (RemoteMetaDataFEC *) &superBlock.m_protectedBlock;
*destMeta = metaData;
@@ -151,27 +153,29 @@ void UDPSinkFEC::write(const SampleVector::iterator& begin, uint32_t sampleChunk
} // block zero
// handle different sample sizes...
int samplesPerBlock = RemoteNbBytesPerBlock / (SDR_RX_SAMP_SZ <= 16 ? 4 : 8); // two I or Q samples
int samplesPerBlock = RemoteNbBytesPerBlock / (m_nbTxBytes * 2); // two I or Q samples
if (m_sampleIndex + inRemainingSamples < samplesPerBlock) // there is still room in the current super block
{
memcpy((void *) &m_superBlock.m_protectedBlock.buf[m_sampleIndex*sizeof(Sample)],
(const void *) &(*(begin+inSamplesIndex)),
inRemainingSamples * sizeof(Sample));
convertSampleToData(begin + inSamplesIndex, inRemainingSamples);
// memcpy((void *) &m_superBlock.m_protectedBlock.buf[m_sampleIndex*sizeof(Sample)],
// (const void *) &(*(begin+inSamplesIndex)),
// inRemainingSamples * sizeof(Sample));
m_sampleIndex += inRemainingSamples;
it = end; // all input samples are consumed
}
else // complete super block and initiate the next if not end of frame
{
memcpy((void *) &m_superBlock.m_protectedBlock.buf[m_sampleIndex*sizeof(Sample)],
(const void *) &(*(begin+inSamplesIndex)),
(samplesPerBlock - m_sampleIndex) * sizeof(Sample));
convertSampleToData(begin + inSamplesIndex, samplesPerBlock - m_sampleIndex);
// memcpy((void *) &m_superBlock.m_protectedBlock.buf[m_sampleIndex*sizeof(Sample)],
// (const void *) &(*(begin+inSamplesIndex)),
// (samplesPerBlock - m_sampleIndex) * sizeof(Sample));
it += samplesPerBlock - m_sampleIndex;
m_sampleIndex = 0;
m_superBlock.m_header.m_frameIndex = m_frameCount;
m_superBlock.m_header.m_blockIndex = m_txBlockIndex;
m_superBlock.m_header.m_sampleBytes = (SDR_RX_SAMP_SZ <= 16 ? 2 : 4);
m_superBlock.m_header.m_sampleBits = SDR_RX_SAMP_SZ;
m_superBlock.m_header.m_sampleBytes = m_nbTxBytes;
m_superBlock.m_header.m_sampleBits = getNbSampleBits();
m_dataFrame->m_superBlocks[m_txBlockIndex] = m_superBlock;
if (m_txBlockIndex == RemoteNbOrginalBlocks - 1) // frame complete
@@ -196,3 +200,15 @@ void UDPSinkFEC::write(const SampleVector::iterator& begin, uint32_t sampleChunk
}
}
uint32_t UDPSinkFEC::getNbSampleBits()
{
if (m_nbTxBytes == 1) {
return 8;
} else if (m_nbTxBytes == 2) {
return 16;
} else if (m_nbTxBytes == 4) {
return 24;
} else {
return 16;
}
}