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SDRdaemon: revised buffers allocation

This commit is contained in:
f4exb 2016-01-27 08:24:00 +01:00
parent 34138dc1c4
commit 2fe57dabae
2 changed files with 44 additions and 33 deletions
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70
plugins/samplesource/sdrdaemon/sdrdaemonbuffer.cpp
View File

@ -27,7 +27,7 @@ SDRdaemonBuffer::SDRdaemonBuffer(std::size_t blockSize) :
m_lz4InCount(0),
m_lz4InSize(0),
m_lz4OutBuffer(0),
m_lz4OutSize(0),
m_frameSize(0),
m_nbDecodes(0),
m_nbSuccessfulDecodes(0),
m_nbCRCOK(0),
@ -37,8 +37,6 @@ SDRdaemonBuffer::SDRdaemonBuffer(std::size_t blockSize) :
m_sampleBits(12),
m_rawBuffer(0)
{
m_buf = new uint8_t[blockSize];
updateBufferSize();
m_currentMeta.init();
}
@ -48,7 +46,9 @@ SDRdaemonBuffer::~SDRdaemonBuffer()
delete[] m_rawBuffer;
}
delete[] m_buf;
if (m_lz4InBuffer) {
delete[] m_lz4InBuffer;
}
}
bool SDRdaemonBuffer::readMeta(char *array, std::size_t length)
@ -71,16 +71,31 @@ bool SDRdaemonBuffer::readMeta(char *array, std::size_t length)
// sanity checks
if (metaData->m_blockSize == m_blockSize) // sent blocksize matches given blocksize
{
uint32_t sampleBytes = metaData->m_sampleBytes & 0x0F;
uint32_t frameSize = sampleBytes * 2 * metaData->m_nbSamples * metaData->m_nbBlocks;
if (metaData->m_sampleBytes & 0x10)
{
m_lz4 = true;
updateLZ4Sizes(metaData);
m_lz4InSize = metaData->m_nbBytes; // compressed input size
m_lz4InCount = 0;
if (frameSize != m_frameSize)
{
updateLZ4Sizes(frameSize);
}
}
else
{
m_lz4 = false;
}
if (frameSize != m_frameSize)
{
updateBufferSize(frameSize);
}
m_frameSize = frameSize;
m_sync = true;
}
else
@ -142,7 +157,7 @@ void SDRdaemonBuffer::writeDataLZ4(char *array, std::size_t length)
m_nbCRCOK++;
}
int compressedSize = LZ4_decompress_fast((const char*) m_lz4InBuffer, (char*) m_lz4OutBuffer, m_lz4OutSize);
int compressedSize = LZ4_decompress_fast((const char*) m_lz4InBuffer, (char*) m_lz4OutBuffer, m_frameSize);
m_nbDecodes++;
if (compressedSize == m_lz4InSize)
@ -177,40 +192,37 @@ void SDRdaemonBuffer::writeDataLZ4(char *array, std::size_t length)
}
}
void SDRdaemonBuffer::updateLZ4Sizes(MetaData *metaData)
void SDRdaemonBuffer::updateLZ4Sizes(uint32_t frameSize)
{
m_lz4InSize = metaData->m_nbBytes; // compressed input size
uint32_t sampleBytes = metaData->m_sampleBytes & 0x0F;
uint32_t originalSize = sampleBytes * 2 * metaData->m_nbSamples * metaData->m_nbBlocks;
uint32_t masInputSize = LZ4_compressBound(frameSize);
if (originalSize != m_lz4OutSize)
{
uint32_t masInputSize = LZ4_compressBound(originalSize);
if (m_lz4InBuffer) {
delete[] m_lz4InBuffer;
}
m_lz4InBuffer = new uint8_t[m_lz4InSize]; // provide extra space for a full UDP block
if (m_lz4OutBuffer) {
delete[] m_lz4OutBuffer;
}
m_lz4OutBuffer = new uint8_t[originalSize];
m_lz4OutSize = originalSize;
if (m_lz4InBuffer) {
delete[] m_lz4InBuffer;
}
m_lz4InCount = 0;
m_lz4InBuffer = new uint8_t[m_lz4InSize]; // provide extra space for a full UDP block
if (m_lz4OutBuffer) {
delete[] m_lz4OutBuffer;
}
m_lz4OutBuffer = new uint8_t[frameSize];
}
void SDRdaemonBuffer::updateBufferSize()
void SDRdaemonBuffer::updateBufferSize(uint32_t frameSize)
{
uint32_t nbFrames = ((m_sampleRate * 2 * m_sampleBytes) / frameSize) + 1; // store at least 1 second of samples
std::cerr << "SDRdaemonBuffer::updateBufferSize:"
<< " frameSize: " << frameSize
<< " nbFrames: " << nbFrames
<< std::endl;
if (m_rawBuffer) {
delete[] m_rawBuffer;
}
m_rawBuffer = new uint8_t[m_sampleRate * 2 * m_sampleBytes]; // store 1 second of samples
m_rawBuffer = new uint8_t[nbFrames * frameSize];
}
void SDRdaemonBuffer::printMeta(MetaData *metaData)

7
plugins/samplesource/sdrdaemon/sdrdaemonbuffer.h
View File

@ -69,9 +69,9 @@ public:
bool isSync() const { return m_sync; }
private:
void updateLZ4Sizes(MetaData *metaData);
void updateLZ4Sizes(uint32_t frameSize);
void writeDataLZ4(char *array, std::size_t length);
void updateBufferSize();
void updateBufferSize(uint32_t frameSize);
void printMeta(MetaData *metaData);
std::size_t m_blockSize; //!< UDP block (payload) size
@ -79,13 +79,12 @@ private:
bool m_lz4; //!< Stream is compressed with LZ4
MetaData m_currentMeta; //!< Stored current meta data
CRC64 m_crc64; //!< CRC64 calculator
uint8_t *m_buf; //!< UDP block buffer
uint8_t *m_lz4InBuffer; //!< Buffer for LZ4 compressed input
uint32_t m_lz4InCount; //!< Current position in LZ4 input buffer
uint32_t m_lz4InSize; //!< Size in bytes of the LZ4 input data
uint8_t *m_lz4OutBuffer; //!< Buffer for LZ4 uncompressed output
uint32_t m_lz4OutSize; //!< Size in bytes of the LZ4 output data (original uncomressed data)
uint32_t m_frameSize; //!< Size in bytes of one uncompressed frame
uint32_t m_nbDecodes;
uint32_t m_nbSuccessfulDecodes;
uint32_t m_nbCRCOK;