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https://github.com/f4exb/sdrangel.git
synced 2026-06-02 22:14:45 -04:00
SDRdaemonFEC plugin: fixed CM256 library init and simplify code
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f4exb
@@ -46,6 +46,13 @@ SDRdaemonFECBuffer::SDRdaemonFECBuffer(uint32_t throttlems) :
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m_readNbBytes = 1;
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m_paramsCM256.BlockBytes = sizeof(ProtectedBlock); // never changes
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m_paramsCM256.OriginalCount = m_nbOriginalBlocks; // never changes
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if (cm256_init()) {
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m_cm256_OK = false;
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qDebug() << "SDRdaemonFECBuffer::SDRdaemonFECBuffer: cannot initialize CM256 library";
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} else {
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m_cm256_OK = true;
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}
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}
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SDRdaemonFECBuffer::~SDRdaemonFECBuffer()
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@@ -59,18 +66,33 @@ void SDRdaemonFECBuffer::initDecodeAllSlots()
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{
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for (int i = 0; i < nbDecoderSlots; i++)
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{
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m_decoderSlots[i].m_totalCount = 0;
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m_decoderSlots[i].m_blockCount = 0;
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m_decoderSlots[i].m_originalCount = 0;
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m_decoderSlots[i].m_recoveryStartIndex = 0;
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m_decoderSlots[i].m_recoveryCount = 0;
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m_decoderSlots[i].m_decoded = false;
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m_decoderSlots[i].m_metaRetrieved = false;
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MetaDataFEC *metaData = (MetaDataFEC *) &m_decoderSlots[i].m_blockZero;
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metaData->init();
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memset((void *) m_decoderSlots[i].m_originalBlocks, 0, m_nbOriginalBlocks * sizeof(ProtectedBlock));
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memset((void *) m_decoderSlots[i].m_recoveryBlocks, 0, m_nbOriginalBlocks * sizeof(ProtectedBlock));
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}
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}
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void SDRdaemonFECBuffer::initDecodeSlot(int slotIndex)
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{
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// collect stats before voiding the slot
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m_curNbBlocks = m_decoderSlots[slotIndex].m_blockCount;
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m_curNbRecovery = m_decoderSlots[slotIndex].m_recoveryCount;
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m_avgNbBlocks(m_curNbBlocks);
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m_avgNbRecovery(m_curNbRecovery);
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// void the slot
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m_decoderSlots[slotIndex].m_blockCount = 0;
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m_decoderSlots[slotIndex].m_originalCount = 0;
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m_decoderSlots[slotIndex].m_recoveryCount = 0;
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m_decoderSlots[slotIndex].m_decoded = false;
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m_decoderSlots[slotIndex].m_metaRetrieved = false;
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memset((void *) m_decoderSlots[slotIndex].m_originalBlocks, 0, m_nbOriginalBlocks * sizeof(ProtectedBlock));
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memset((void *) m_decoderSlots[slotIndex].m_recoveryBlocks, 0, m_nbOriginalBlocks * sizeof(ProtectedBlock));
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}
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void SDRdaemonFECBuffer::initReadIndex()
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{
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m_readIndex = ((m_decoderIndexHead + (nbDecoderSlots/2)) % nbDecoderSlots) * sizeof(BufferFrame);
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@@ -133,184 +155,132 @@ void SDRdaemonFECBuffer::checkSlotData(int slotIndex)
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m_nbWrites++;
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if (!m_decoderSlots[slotIndex].m_decoded)
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//if (m_decoderSlots[slotIndex].m_blockCount < m_nbOriginalBlocks)
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{
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qDebug() << "SDRdaemonFECBuffer::checkSlotData: incomplete frame:"
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<< " m_blockCount: " << m_decoderSlots[slotIndex].m_blockCount
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<< " m_recoveryCount: " << m_decoderSlots[slotIndex].m_recoveryCount;
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}
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if (m_decoderSlots[slotIndex].m_metaRetrieved) // meta data has been retrieved (direct or recovery)
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{
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MetaDataFEC *metaData = (MetaDataFEC *) &m_decoderSlots[slotIndex].m_blockZero;
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if (!(*metaData == m_currentMeta))
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{
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int sampleRate = metaData->m_sampleRate;
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if (sampleRate > 0) {
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m_bufferLenSec = (float) m_framesNbBytes / (float) (sampleRate * m_iqSampleSize);
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m_balCorrLimit = sampleRate / 1000; // +/- 1 ms correction max per read
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m_readNbBytes = (sampleRate * m_iqSampleSize) / 20;
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}
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printMeta("SDRdaemonFECBuffer::checkSlotData: new meta", metaData); // print for change other than timestamp
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}
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m_currentMeta = *metaData; // renew current meta
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}
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}
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void SDRdaemonFECBuffer::initDecodeSlot(int slotIndex)
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{
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// collect stats before voiding the slot
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m_curNbBlocks = m_decoderSlots[slotIndex].m_blockCount;
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m_curNbRecovery = m_decoderSlots[slotIndex].m_recoveryCount;
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m_avgNbBlocks(m_curNbBlocks);
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m_avgNbRecovery(m_curNbRecovery);
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// void the slot
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m_decoderSlots[slotIndex].m_totalCount = 0;
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m_decoderSlots[slotIndex].m_blockCount = 0;
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m_decoderSlots[slotIndex].m_originalCount = 0;
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m_decoderSlots[slotIndex].m_recoveryStartIndex = 0;
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m_decoderSlots[slotIndex].m_recoveryCount = 0;
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m_decoderSlots[slotIndex].m_decoded = false;
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m_decoderSlots[slotIndex].m_metaRetrieved = false;
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MetaDataFEC *metaData = (MetaDataFEC *) &m_decoderSlots[slotIndex].m_blockZero;
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metaData->init();
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memset((void *) m_frames[slotIndex].m_blocks, 0, (m_nbOriginalBlocks - 1) * sizeof(ProtectedBlock));
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memset((void *) m_decoderSlots[slotIndex].m_recoveryBlocks, 1, m_nbOriginalBlocks * sizeof(ProtectedBlock));
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// copy retrieved data to main buffer
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memcpy((void *) &m_frames[slotIndex].m_blocks[0], (const void *) &m_decoderSlots[slotIndex].m_originalBlocks[1], (m_nbOriginalBlocks - 1)*sizeof(ProtectedBlock));
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}
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void SDRdaemonFECBuffer::writeData(char *array, uint32_t length)
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{
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SuperBlock *superBlock = (SuperBlock *) array;
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int frameIndex = superBlock->header.frameIndex;
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int blockIndex = superBlock->header.blockIndex;
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int decoderIndex = frameIndex % nbDecoderSlots;
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// frame break
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if (m_frameHead == -1) // initial state
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{
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m_decoderIndexHead = decoderIndex; // new decoder slot head
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m_frameHead = frameIndex;
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initReadIndex(); // reset read index
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initDecodeAllSlots(); // initialize all slots
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m_blockIndex = 0;
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}
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else if (m_frameHead != frameIndex) // frame break => new frame starts
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{
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if (frameIndex != m_frameHead + 1)
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{
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qDebug() << "SDRdaemonFECBuffer::writeData: new frame problem start over: " << frameIndex << ":" << m_frameHead << ":" << blockIndex;
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m_decoderIndexHead = decoderIndex; // new decoder slot head
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m_frameHead = frameIndex;
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initReadIndex(); // reset read index
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initDecodeAllSlots(); // initialize all slots
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}
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else
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{
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m_decoderIndexHead = decoderIndex; // new decoder slot head
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m_frameHead = frameIndex; // new frame head
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checkSlotData(decoderIndex); // check slot before re-init
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rwCorrectionEstimate(decoderIndex);
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initDecodeSlot(decoderIndex); // collect stats and re-initialize current slot
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}
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m_blockIndex = 0;
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m_decoderIndexHead = decoderIndex; // new decoder slot head
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m_frameHead = frameIndex; // new frame head
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checkSlotData(decoderIndex); // check slot before re-init
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rwCorrectionEstimate(decoderIndex);
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initDecodeSlot(decoderIndex); // collect stats and re-initialize current slot
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}
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// Block processing
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if (m_decoderSlots[decoderIndex].m_blockCount < m_nbOriginalBlocks) // not enough blocks to decode -> store data
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{
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int blockIndex = superBlock->header.blockIndex;
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int blockCount = m_decoderSlots[decoderIndex].m_blockCount;
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int recoveryCount = m_decoderSlots[decoderIndex].m_recoveryCount;
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m_decoderSlots[decoderIndex].m_cm256DescriptorBlocks[blockCount].Index = blockIndex;
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if (blockIndex == 0) // first block with meta
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{
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//qDebug() << "SDRdaemonFECBuffer::writeData(0): frameIndex: " << frameIndex << " blockIndex: " << blockIndex;
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m_decoderSlots[decoderIndex].m_blockZero = superBlock->protectedBlock;
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m_decoderSlots[decoderIndex].m_metaRetrieved = true;
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m_decoderSlots[decoderIndex].m_cm256DescriptorBlocks[blockCount].Block = (void *) &m_decoderSlots[decoderIndex].m_blockZero;
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m_decoderSlots[decoderIndex].m_originalCount++;
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}
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else if (blockIndex < m_nbOriginalBlocks) // original data
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if (blockIndex < m_nbOriginalBlocks) // original data
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{
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//qDebug() << "SDRdaemonFECBuffer::writeData(<128): frameIndex: " << frameIndex << " blockIndex: " << blockIndex;
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m_frames[decoderIndex].m_blocks[blockIndex - 1] = superBlock->protectedBlock;
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m_decoderSlots[decoderIndex].m_cm256DescriptorBlocks[blockCount].Block = (void *) &m_frames[decoderIndex].m_blocks[blockIndex - 1];
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m_decoderSlots[decoderIndex].m_originalBlocks[blockIndex] = superBlock->protectedBlock;
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m_decoderSlots[decoderIndex].m_cm256DescriptorBlocks[blockCount].Block = (void *) &m_decoderSlots[decoderIndex].m_originalBlocks[blockIndex];
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m_decoderSlots[decoderIndex].m_originalCount++;
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}
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else // recovery data
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{
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//qDebug() << "SDRdaemonFECBuffer::writeData(>=128): frameIndex: " << frameIndex << " blockCount: " << blockCount << " blockIndex: " << blockIndex;
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if (recoveryCount == 0)
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{
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m_decoderSlots[decoderIndex].m_recoveryStartIndex = blockCount;
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}
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m_decoderSlots[decoderIndex].m_recoveryBlocks[recoveryCount] = superBlock->protectedBlock;
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m_decoderSlots[decoderIndex].m_cm256DescriptorBlocks[blockCount].Block = (void *) &m_decoderSlots[decoderIndex].m_recoveryBlocks[recoveryCount];
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m_decoderSlots[decoderIndex].m_recoveryCount++;
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}
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if ((blockIndex > 0) && (blockIndex <= m_blockIndex))
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{
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qDebug() << "SDRdaemonFECBuffer::writeData: block out of sequence: " << blockIndex << ":" << m_blockIndex;
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}
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}
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m_decoderSlots[decoderIndex].m_blockCount++;
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m_blockIndex = blockIndex;
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if (m_decoderSlots[decoderIndex].m_blockCount == m_nbOriginalBlocks) // ready to decode
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{
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m_decoderSlots[decoderIndex].m_decoded = true;
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if (m_decoderSlots[decoderIndex].m_metaRetrieved) // block zero with its meta data has been received
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if (m_cm256_OK && (m_decoderSlots[decoderIndex].m_recoveryCount > 0)) // recovery data used => need to decode FEC
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{
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m_currentMeta = *((MetaDataFEC *) &m_decoderSlots[decoderIndex].m_blockZero);
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}
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m_paramsCM256.BlockBytes = sizeof(ProtectedBlock); // never changes
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m_paramsCM256.OriginalCount = m_nbOriginalBlocks; // never changes
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if (m_decoderSlots[decoderIndex].m_recoveryCount > 0) // recovery data used => need to decode FEC
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{
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m_paramsCM256.RecoveryCount = m_currentMeta.m_nbFECBlocks; // take last stored value for number of FEC blocks
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if (m_decoderSlots[decoderIndex].m_metaRetrieved) {
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m_paramsCM256.RecoveryCount = m_currentMeta.m_nbFECBlocks;
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} else {
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m_paramsCM256.RecoveryCount = m_decoderSlots[decoderIndex].m_recoveryCount;
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}
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if (cm256_decode(m_paramsCM256, m_decoderSlots[decoderIndex].m_cm256DescriptorBlocks)) // failure to decode
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if (cm256_decode(m_paramsCM256, m_decoderSlots[decoderIndex].m_cm256DescriptorBlocks)) // CM256 decode
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{
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qDebug() << "SDRdaemonFECBuffer::writeData: CM256 decode error:"
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<< " BlockBytes: " << m_paramsCM256.BlockBytes
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<< " OriginalCount: " << m_paramsCM256.OriginalCount
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<< " RecoveryCount: " << m_paramsCM256.RecoveryCount
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qDebug() << "SDRdaemonFECBuffer::writeData: decode CM256 error:"
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<< " m_originalCount: " << m_decoderSlots[decoderIndex].m_originalCount
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<< " m_recoveryCount: " << m_decoderSlots[decoderIndex].m_recoveryCount;
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}
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else // success to decode
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else
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{
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qDebug() << "SDRdaemonFECBuffer::writeData: CM256 decode success:"
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<< " m_recoveryStartIndex: " << m_decoderSlots[decoderIndex].m_recoveryStartIndex
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qDebug() << "SDRdaemonFECBuffer::writeData: decode CM256 success:"
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<< " m_originalCount: " << m_decoderSlots[decoderIndex].m_originalCount
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<< " m_recoveryCount: " << m_decoderSlots[decoderIndex].m_recoveryCount;
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for (int ir = 0; ir < m_decoderSlots[decoderIndex].m_recoveryCount; ir++) // recover lost blocks
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for (int ir = 0; ir < m_decoderSlots[decoderIndex].m_recoveryCount; ir++) // restore missing blocks
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{
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int blockIndex = m_decoderSlots[decoderIndex].m_cm256DescriptorBlocks[m_decoderSlots[decoderIndex].m_recoveryStartIndex+ir].Index;
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int recoveryIndex = m_nbOriginalBlocks - m_decoderSlots[decoderIndex].m_recoveryCount + ir;
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int blockIndex = m_decoderSlots[decoderIndex].m_cm256DescriptorBlocks[recoveryIndex].Index;
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if (blockIndex > 0) // ignore meta data for now
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if (blockIndex == 0) // first block with meta
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{
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m_frames[decoderIndex].m_blocks[blockIndex - 1] = m_decoderSlots[decoderIndex].m_recoveryBlocks[ir];
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m_decoderSlots[decoderIndex].m_metaRetrieved = true;
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}
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qDebug() << "SDRdaemonFECBuffer::writeData:"
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<< " recovered block #" << blockIndex
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<< " i[0]: " << m_decoderSlots[decoderIndex].m_recoveryBlocks[ir].samples[0].i
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<< " q[0]: " << m_decoderSlots[decoderIndex].m_recoveryBlocks[ir].samples[0].q;
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}
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} // recovery success
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qDebug() << "SDRdaemonFECBuffer::writeData: recovered block #" << blockIndex;
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} // restore missing blocks
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} // CM256 decode
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} // revovery
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} // decode
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m_decoderSlots[decoderIndex].m_totalCount++;
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if (m_decoderSlots[decoderIndex].m_metaRetrieved) // block zero with its meta data has been received
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{
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MetaDataFEC *metaData = (MetaDataFEC *) &m_decoderSlots[decoderIndex].m_originalBlocks[0];
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if (!(*metaData == m_currentMeta))
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{
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int sampleRate = metaData->m_sampleRate;
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if (sampleRate > 0) {
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m_bufferLenSec = (float) m_framesNbBytes / (float) (sampleRate * m_iqSampleSize);
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m_balCorrLimit = sampleRate / 1000; // +/- 1 ms correction max per read
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m_readNbBytes = (sampleRate * m_iqSampleSize) / 20;
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}
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printMeta("SDRdaemonFECBuffer::writeData: new meta", metaData); // print for change other than timestamp
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}
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m_currentMeta = *metaData; // renew current meta
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} // check block 0
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} // decode
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}
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void SDRdaemonFECBuffer::writeData0(char *array, uint32_t length)
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