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SDRdaemon plugin: button to make auto follow stream sample rate optional

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This commit is contained in:
f4exb
2016-03-11 05:25:25 +01:00
parent 1e34641138
commit 763594c2f0
8 changed files with 115 additions and 27 deletions
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plugins/samplesource/sdrdaemon/sdrdaemonbuffer.cpp
+20 -8
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@@ -55,7 +55,8 @@ SDRdaemonBuffer::SDRdaemonBuffer(uint32_t rateDivider) :
m_readCycles(0),
m_lastWriteIndex(0),
m_skewRateSum(0.0),
m_skewRate(0.0)
m_skewRate(0.0),
m_autoFollowRate(false)
{
m_currentMeta.init();
}
@@ -113,18 +114,25 @@ bool SDRdaemonBuffer::readMeta(char *array, uint32_t length)
uint32_t frameSize = m_iqSampleSize * metaData->m_nbSamples * metaData->m_nbBlocks;
int sampleRate = metaData->m_sampleRate;
if (sampleRate != m_sampleRateStream)
if (m_autoFollowRate)
{
m_sampleRateStream = sampleRate;
if (sampleRate != m_sampleRateStream)
{
m_sampleRateStream = sampleRate;
}
else
{
sampleRate = m_sampleRate;
}
sampleRate += sampleRate * m_skewRate;
sampleRate = (sampleRate / m_rateDivider) * m_rateDivider;
}
else
{
sampleRate = m_sampleRate;
m_sampleRateStream = sampleRate;
}
sampleRate += sampleRate * m_skewRate;
sampleRate = (sampleRate / m_rateDivider) * m_rateDivider;
if (metaData->m_sampleBytes & 0x10)
{
m_lz4 = true;
@@ -268,7 +276,11 @@ uint8_t *SDRdaemonBuffer::readDataChunk()
//qDebug("SDRdaemonBuffer::readDataChunk: %d / %d (%lf)", m_writeIndex, m_rawSize, oneCycleSkew);
if (m_readCycles && ((m_writeIndex < m_rawSize / 10) || (m_rawSize - m_writeIndex < m_rawSize / 10)))
if (!m_autoFollowRate)
{
m_skewRate = 0.0;
}
else if (m_readCycles && ((m_writeIndex < m_rawSize / 10) || (m_rawSize - m_writeIndex < m_rawSize / 10)))
{
m_skewRate = m_skewRateSum / m_readCycles;
if (m_skewRate > 0.2) {