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SDRdaemon plugin: fixed buffer issues

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This commit is contained in:
f4exb 2016-02-20 03:41:20 +01:00
parent 6b16222792
commit 33a196e4aa
4 changed files with 65 additions and 81 deletions
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95
plugins/samplesource/sdrdaemon/sdrdaemonbuffer.cpp
View File

@ -16,11 +16,15 @@
#include <cassert>
#include <cstring>
#include <cstdlib>
#include <iostream>
#include "sdrdaemonbuffer.h"
SDRdaemonBuffer::SDRdaemonBuffer(uint32_t blockSize, uint32_t rateDivider) :
m_blockSize(blockSize),
const int SDRdaemonBuffer::m_udpPayloadSize = 512;
const int SDRdaemonBuffer::m_sampleSize = 2;
const int SDRdaemonBuffer::m_iqSampleSize = 2 * m_sampleSize;
SDRdaemonBuffer::SDRdaemonBuffer(uint32_t rateDivider) :
m_rateDivider(rateDivider),
m_sync(false),
m_lz4(false),
@ -37,11 +41,10 @@ SDRdaemonBuffer::SDRdaemonBuffer(uint32_t blockSize, uint32_t rateDivider) :
m_sampleRate(1000000),
m_sampleBytes(2),
m_sampleBits(12),
m_writeCount(0),
m_readCount(0),
m_writeIndex(0),
m_readChunkIndex(0),
m_rawSize(0),
m_rawBuffer(0),
m_chunkBuffer(0),
m_bytesInBlock(0),
m_nbBlocks(0)
{
@ -61,10 +64,6 @@ SDRdaemonBuffer::~SDRdaemonBuffer()
if (m_lz4OutBuffer) {
delete[] m_lz4OutBuffer;
}
if (m_chunkBuffer) {
delete[] m_chunkBuffer;
}
}
bool SDRdaemonBuffer::readMeta(char *array, uint32_t length)
@ -87,10 +86,10 @@ bool SDRdaemonBuffer::readMeta(char *array, uint32_t length)
m_currentMeta = *metaData;
// sanity checks
if (metaData->m_blockSize == m_blockSize) // sent blocksize matches given blocksize
if (metaData->m_blockSize == m_udpPayloadSize) // sent blocksize matches given blocksize
{
m_sampleBytes = metaData->m_sampleBytes & 0x0F;
uint32_t frameSize = 2 * 2 * metaData->m_nbSamples * metaData->m_nbBlocks;
uint32_t frameSize = m_iqSampleSize * metaData->m_nbSamples * metaData->m_nbBlocks;
uint32_t sampleRate = metaData->m_sampleRate;
if (metaData->m_sampleBytes & 0x10)
@ -109,9 +108,9 @@ bool SDRdaemonBuffer::readMeta(char *array, uint32_t length)
m_lz4 = false;
}
if (frameSize != m_frameSize)
if (sampleRate != m_sampleRate)
{
updateBufferSize(sampleRate, frameSize);
updateBufferSize(sampleRate);
}
m_sampleRate = sampleRate;
@ -182,7 +181,7 @@ void SDRdaemonBuffer::writeDataLZ4(const char *array, uint32_t length)
m_nbCRCOK++;
}
int compressedSize = LZ4_decompress_fast((const char*) m_lz4InBuffer, (char*) &m_rawBuffer[m_writeCount], m_frameSize);
int compressedSize = LZ4_decompress_fast((const char*) m_lz4InBuffer, (char*) &m_rawBuffer[m_writeIndex], m_frameSize);
m_nbDecodes++;
if (compressedSize == m_lz4InSize)
@ -199,16 +198,16 @@ void SDRdaemonBuffer::writeDataLZ4(const char *array, uint32_t length)
void SDRdaemonBuffer::writeToRawBufferUncompressed(const char *array, uint32_t length)
{
// TODO: handle the 1 byte per I or Q sample
if (m_writeCount + length < m_rawSize)
if (m_writeIndex + length < m_rawSize)
{
std::memcpy((void *) &m_rawBuffer[m_writeCount], (const void *) array, length);
m_writeCount += length;
std::memcpy((void *) &m_rawBuffer[m_writeIndex], (const void *) array, length);
m_writeIndex += length;
}
else
{
std::memcpy((void *) &m_rawBuffer[m_writeCount], (const void *) array, m_rawSize - m_writeCount);
m_writeCount = length - (m_rawSize - m_writeCount);
std::memcpy((void *) m_rawBuffer, (const void *) &array[m_rawSize - m_writeCount], m_writeCount);
std::memcpy((void *) &m_rawBuffer[m_writeIndex], (const void *) array, m_rawSize - m_writeIndex);
m_writeIndex = length - (m_rawSize - m_writeIndex);
std::memcpy((void *) m_rawBuffer, (const void *) &array[m_rawSize - m_writeIndex], m_writeIndex);
}
}
@ -225,27 +224,26 @@ void SDRdaemonBuffer::writeToRawBufferLZ4(const char *array, uint32_t length)
writeToRawBufferUncompressed((const char *) m_lz4OutBuffer, m_frameSize);
}
uint8_t *SDRdaemonBuffer::readData(uint32_t length)
uint8_t *SDRdaemonBuffer::readDataChunk()
{
if (m_readCount + length < m_rawSize)
// relies on the fact that we always have an integer number of chunks in the raw buffer
if (m_readChunkIndex == m_rateDivider * 2) // go back to start or middle of raw buffer
{
uint32_t readCount = m_readCount;
m_readCount += length;
return &m_rawBuffer[readCount];
// make sure the read and write pointers are not in the same half of the raw buffer
if (m_writeIndex < m_rateDivider * m_chunkSize - 1)
{
m_readChunkIndex = m_rateDivider; // go to middle
}
//else if (m_readCount > 0)
else
{
if (length > m_chunkSize) {
qDebug("SDRdaemonBuffer::readData: length: %d", length);
m_readChunkIndex = 0; // go to start
}
uint32_t retLength = std::min(length, m_chunkSize);
//uint32_t retLength = length;
std::memcpy((void *) m_chunkBuffer, (const void *) &m_rawBuffer[m_readCount], m_rawSize - m_readCount); // read last bit from raw buffer
m_readCount = retLength - (m_rawSize - m_readCount);
std::memcpy((void *) &m_chunkBuffer[m_rawSize - m_readCount], (const void *) m_rawBuffer, m_readCount); // read the rest at start of raw buffer
return m_chunkBuffer;
}
uint32_t readIndex = m_readChunkIndex;
m_readChunkIndex++;
return &m_rawBuffer[readIndex * m_chunkSize];
}
void SDRdaemonBuffer::updateLZ4Sizes(uint32_t frameSize)
@ -265,35 +263,34 @@ void SDRdaemonBuffer::updateLZ4Sizes(uint32_t frameSize)
m_lz4OutBuffer = new uint8_t[frameSize];
}
void SDRdaemonBuffer::updateBufferSize(uint32_t sampleRate, uint32_t frameSize)
void SDRdaemonBuffer::updateBufferSize(uint32_t sampleRate)
{
uint32_t nbFrames = ((sampleRate * 2 * 2) / frameSize) + 1; // store at least 1 second of samples
assert(sampleRate % m_rateDivider == 0); // make sure we get an integer number of samples in a chunk
std::cerr << "SDRdaemonBuffer::updateBufferSize:"
<< " sampleRate: " << sampleRate
<< " frameSize: " << frameSize
<< " nbFrames: " << nbFrames
<< std::endl;
// Store 2 seconds long of samples so we have two one second long half buffers
m_chunkSize = (sampleRate * m_iqSampleSize) / m_rateDivider;
m_rawSize = m_chunkSize * m_rateDivider * 2;
if (m_rawBuffer) {
delete[] m_rawBuffer;
}
m_rawSize = nbFrames * frameSize;
m_rawBuffer = new uint8_t[m_rawSize];
if (m_chunkBuffer) {
delete[] m_chunkBuffer;
}
m_writeIndex = 0;
m_readChunkIndex = m_rateDivider;
m_chunkSize = (sampleRate * 2 * 2) / m_rateDivider;
m_chunkBuffer = new uint8_t[m_chunkSize];
std::cerr << "SDRdaemonBuffer::updateBufferSize:"
<< " sampleRate: " << sampleRate
<< " m_chunkSize: " << m_chunkSize
<< " m_rawSize: " << m_rawSize
<< std::endl;
}
void SDRdaemonBuffer::updateBlockCounts(uint32_t nbBytesReceived)
{
m_nbBlocks += m_bytesInBlock + nbBytesReceived > m_blockSize ? 1 : 0;
m_bytesInBlock = m_bytesInBlock + nbBytesReceived > m_blockSize ? nbBytesReceived : m_bytesInBlock + nbBytesReceived;
m_nbBlocks += m_bytesInBlock + nbBytesReceived > m_udpPayloadSize ? 1 : 0;
m_bytesInBlock = m_bytesInBlock + nbBytesReceived > m_udpPayloadSize ? nbBytesReceived : m_bytesInBlock + nbBytesReceived;
}
void SDRdaemonBuffer::printMeta(MetaData *metaData)

16
plugins/samplesource/sdrdaemon/sdrdaemonbuffer.h
View File

@ -61,24 +61,27 @@ public:
};
#pragma pack(pop)
SDRdaemonBuffer(uint32_t blockSize, uint32_t rateDivider);
SDRdaemonBuffer(uint32_t rateDivider);
~SDRdaemonBuffer();
bool readMeta(char *array, uint32_t length); //!< Attempt to read meta. Returns true if meta block
void writeData(char *array, uint32_t length); //!< Write data into buffer.
uint8_t *readData(uint32_t length); //!< Read data from buffer
uint8_t *readDataChunk(); //!< Read a chunk of data from buffer
const MetaData& getCurrentMeta() const { return m_currentMeta; }
void updateBlockCounts(uint32_t nbBytesReceived);
bool isSync() const { return m_sync; }
static const int m_udpPayloadSize;
static const int m_sampleSize;
static const int m_iqSampleSize;
private:
void updateLZ4Sizes(uint32_t frameSize);
void writeDataLZ4(const char *array, uint32_t length);
void writeToRawBufferLZ4(const char *array, uint32_t originalLength);
void writeToRawBufferUncompressed(const char *array, uint32_t length);
void updateBufferSize(uint32_t sampleRate, uint32_t frameSize);
void updateBufferSize(uint32_t sampleRate);
void printMeta(MetaData *metaData);
uint32_t m_blockSize; //!< UDP block (payload) size
uint32_t m_rateDivider; //!< Number of times per seconds the samples are fetched
bool m_sync; //!< Meta data acquired (Stream synchronized)
bool m_lz4; //!< Stream is compressed with LZ4
@ -100,11 +103,10 @@ private:
uint8_t m_sampleBytes; //!< Current number of bytes per I or Q sample
uint8_t m_sampleBits; //!< Current number of effective bits per sample
uint32_t m_writeCount; //!< Current write position in the raw samples buffer
uint32_t m_readCount; //!< Current read position in the raw samples buffer
uint32_t m_writeIndex; //!< Current write position in the raw samples buffer
uint32_t m_readChunkIndex; //!< Current read chunk index in the raw samples buffer
uint32_t m_rawSize; //!< Size of the raw samples buffer in bytes
uint8_t *m_rawBuffer; //!< Buffer for raw samples obtained from UDP (I/Q not in a formal I/Q structure)
uint8_t *m_chunkBuffer; //!< Buffer to build a chunk length of raw samples
uint32_t m_chunkSize; //!< Size of a chunk of samples in bytes
uint32_t m_bytesInBlock; //!< Number of bytes received in the current UDP block
uint32_t m_nbBlocks; //!< Number of UDP blocks received in the current frame

26
plugins/samplesource/sdrdaemon/sdrdaemonudphandler.cpp
View File

@ -23,19 +23,16 @@
#include "sdrdaemoninput.h"
const int SDRdaemonUDPHandler::m_rateDivider = 1000/SDRDAEMON_THROTTLE_MS;
const int SDRdaemonUDPHandler::m_udpPayloadSize = 512;
SDRdaemonUDPHandler::SDRdaemonUDPHandler(SampleFifo *sampleFifo, MessageQueue *outputMessageQueueToGUI) :
//m_mutex(QMutex::Recursive),
m_sdrDaemonBuffer(m_udpPayloadSize, m_rateDivider),
m_sdrDaemonBuffer(m_rateDivider),
m_dataSocket(0),
m_dataAddress(QHostAddress::LocalHost),
m_dataPort(9090),
m_dataConnected(false),
m_udpBuf(0),
m_udpReadBytes(0),
m_buf(0),
m_bufsize(0),
m_chunksize(0),
m_sampleFifo(sampleFifo),
m_samplerate(0),
@ -46,7 +43,7 @@ SDRdaemonUDPHandler::SDRdaemonUDPHandler(SampleFifo *sampleFifo, MessageQueue *o
m_tickCount(0),
m_samplesCount(0)
{
m_udpBuf = new char[m_udpPayloadSize];
m_udpBuf = new char[SDRdaemonBuffer::m_udpPayloadSize];
}
SDRdaemonUDPHandler::~SDRdaemonUDPHandler()
@ -169,20 +166,11 @@ void SDRdaemonUDPHandler::setSamplerate(uint32_t samplerate)
//QMutexLocker ml(&m_mutex);
m_samplerate = samplerate;
m_chunksize = (m_samplerate / m_rateDivider)*4; // TODO: implement FF and slow motion here. 4 corresponds to live. 2 is half speed, 8 is doulbe speed
m_bufsize = m_chunksize;
if (m_buf == 0) {
qDebug() << " - Allocate buffer";
m_buf = (quint8*) malloc(m_bufsize);
} else {
qDebug() << " - Re-allocate buffer";
m_buf = (quint8*) realloc((void*) m_buf, m_bufsize);
}
m_chunksize = (m_samplerate / m_rateDivider) * SDRdaemonBuffer::m_iqSampleSize;
qDebug() << "SDRdaemonUDPHandler::setSamplerate:"
<< " size: " << m_bufsize
<< " #samples: " << (m_bufsize/4);
<< " chunk size: " << m_chunksize
<< " #samples per chunk: " << (m_chunksize/SDRdaemonBuffer::m_iqSampleSize);
}
void SDRdaemonUDPHandler::connectTimer(const QTimer& timer)
@ -194,8 +182,8 @@ void SDRdaemonUDPHandler::connectTimer(const QTimer& timer)
void SDRdaemonUDPHandler::tick()
{
// read samples directly feeding the SampleFifo (no callback)
m_sampleFifo->write(reinterpret_cast<quint8*>(m_sdrDaemonBuffer.readData(m_chunksize)), m_chunksize);
m_samplesCount += m_chunksize / 4;
m_sampleFifo->write(reinterpret_cast<quint8*>(m_sdrDaemonBuffer.readDataChunk()), m_chunksize);
m_samplesCount += m_chunksize / SDRdaemonBuffer::m_iqSampleSize;
if (m_tickCount < m_rateDivider)
{

3
plugins/samplesource/sdrdaemon/sdrdaemonudphandler.h
View File

@ -55,8 +55,6 @@ private:
bool m_dataConnected;
char *m_udpBuf;
qint64 m_udpReadBytes;
quint8 *m_buf;
std::size_t m_bufsize;
std::size_t m_chunksize;
SampleFifo *m_sampleFifo;
uint32_t m_samplerate;
@ -68,7 +66,6 @@ private:
std::size_t m_samplesCount;
static const int m_rateDivider;
static const int m_udpPayloadSize;
void setSamplerate(uint32_t samplerate);
void processData();