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DSD demod: allow use of audio rates that are integer multiples of 8k other than 48k (x2,3,4,5)

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This commit is contained in:
f4exb 2018-04-23 01:04:47 +02:00
parent 114e70b595
commit 2efa7ab594
13 changed files with 74 additions and 29 deletions
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2
app/main.cpp
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@ -35,7 +35,7 @@ static int runQtApplication(int argc, char* argv[], qtwebapp::LoggerWithFile *lo
*/
QCoreApplication::setOrganizationName("f4exb");
QCoreApplication::setApplicationName("SDRangel");
QCoreApplication::setApplicationVersion("3.14.4");
QCoreApplication::setApplicationVersion("3.14.5");
#if 1
qApp->setStyle(QStyleFactory::create("fusion"));

2
appsrv/main.cpp
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@ -56,7 +56,7 @@ static int runQtApplication(int argc, char* argv[], qtwebapp::LoggerWithFile *lo
QCoreApplication::setOrganizationName("f4exb");
QCoreApplication::setApplicationName("SDRangelSrv");
QCoreApplication::setApplicationVersion("3.14.4");
QCoreApplication::setApplicationVersion("3.14.5");
int catchSignals[] = {SIGQUIT, SIGINT, SIGTERM, SIGHUP};
std::vector<int> vsig(catchSignals, catchSignals + sizeof(catchSignals) / sizeof(int));

6
debian/changelog vendored
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@ -1,3 +1,9 @@
sdrangel (3.14.5-1) unstable; urgency=medium
* DSD demod: allow audio rates integer multiples of 8k other than 48k
-- Edouard Griffiths, F4EXB <f4exb06@gmail.com> Sun, 29 Apr 2018 17:14:18 +0200
sdrangel (3.14.4-1) unstable; urgency=medium
* AM demod: squelch buffer to open at start of valid squelch

5
plugins/channelrx/demoddsd/dsddecoder.cpp
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@ -41,6 +41,11 @@ void DSDDecoder::set48k(bool to48k)
m_decoder.setUpsampling(to48k ? 6 : 0);
}
void DSDDecoder::setUpsampling(int upsampling)
{
m_decoder.setUpsampling(upsampling);
}
void DSDDecoder::setBaudRate(int baudRate)
{
if (baudRate == 2400)

1
plugins/channelrx/demoddsd/dsddecoder.h
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@ -72,6 +72,7 @@ public:
void setSymbolPLLLock(bool pllLock) { m_decoder.setSymbolPLLLock(pllLock); }
void useHPMbelib(bool useHP) { m_decoder.useHPMbelib(useHP); }
void set48k(bool to48k);
void setUpsampling(int upsampling);
private:
DSDcc::DSDDecoder m_decoder;

15
plugins/channelrx/demoddsd/dsddemod.cpp
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@ -238,7 +238,7 @@ void DSDDemod::feed(const SampleVector::const_iterator& begin, const SampleVecto
m_settings.m_volume * 10.0,
m_settings.m_tdmaStereo ? 1 : 3, // left or both channels
m_settings.m_highPassFilter,
m_audioSampleRate != 8000, // upsample to 48k unless native 8k
m_audioSampleRate/8000, // upsample from native 8k
&m_audioFifo1);
}
@ -255,7 +255,7 @@ void DSDDemod::feed(const SampleVector::const_iterator& begin, const SampleVecto
m_settings.m_volume * 10.0,
m_settings.m_tdmaStereo ? 2 : 3, // right or both channels
m_settings.m_highPassFilter,
m_audioSampleRate != 8000, // upsample to 48k unless native 8k
m_audioSampleRate/8000, // upsample from native 8k
&m_audioFifo2);
}
@ -412,14 +412,15 @@ bool DSDDemod::handleMessage(const Message& cmd)
void DSDDemod::applyAudioSampleRate(int sampleRate)
{
qDebug("DSDDemod::applyAudioSampleRate: %d", sampleRate);
int upsampling = sampleRate / 8000;
if ((sampleRate != 48000) && (sampleRate != 8000)) {
qWarning("DSDDemod::applyAudioSampleRate: audio does not work properly with sample rates other than 48 or 8 kS/s");
qDebug("DSDDemod::applyAudioSampleRate: audio rate: %d upsample by %d", sampleRate, upsampling);
if (sampleRate % 8000 != 0) {
qDebug("DSDDemod::applyAudioSampleRate: audio will sound best with sample rates that are integer multiples of 8 kS/s");
}
m_dsdDecoder.set48k(sampleRate != 8000);
m_dsdDecoder.setUpsampling(upsampling);
m_audioSampleRate = sampleRate;
}

2
plugins/channelrx/demoddsd/dsddemodplugin.cpp
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@ -25,7 +25,7 @@
const PluginDescriptor DSDDemodPlugin::m_pluginDescriptor = {
QString("DSD Demodulator"),
QString("3.14.4"),
QString("3.14.5"),
QString("(c) Edouard Griffiths, F4EXB"),
QString("https://github.com/f4exb/sdrangel"),
true,

6
sdrbase/dsp/dspengine.cpp
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@ -164,10 +164,10 @@ void DSPEngine::pushMbeFrame(
int mbeVolumeIndex,
unsigned char channels,
bool useHP,
bool upSample48k,
int upsampling,
AudioFifo *audioFifo)
{
m_dvSerialEngine.pushMbeFrame(mbeFrame, mbeRateIndex, mbeVolumeIndex, channels, useHP, upSample48k, audioFifo);
m_dvSerialEngine.pushMbeFrame(mbeFrame, mbeRateIndex, mbeVolumeIndex, channels, useHP, upsampling, audioFifo);
}
#else
void DSPEngine::pushMbeFrame(
@ -176,7 +176,7 @@ void DSPEngine::pushMbeFrame(
int mbeVolumeIndex __attribute((unused)),
unsigned char channels __attribute((unused)),
bool useHP __attribute((unused)),
bool upSample48k __attribute((unused)),
int upsampling __attribute((unused)),
AudioFifo *audioFifo __attribute((unused)))
{}
#endif

2
sdrbase/dsp/dspengine.h
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@ -68,7 +68,7 @@ public:
int mbeVolumeIndex,
unsigned char channels,
bool useHP,
bool upSample48k,
int upsampling,
AudioFifo *audioFifo);
const QTimer& getMasterTimer() const { return m_masterTimer; }

6
sdrbase/dsp/dvserialengine.cpp
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@ -253,7 +253,7 @@ void DVSerialEngine::pushMbeFrame(
int mbeVolumeIndex,
unsigned char channels,
bool useLP,
bool upSample48k,
int upsampling,
AudioFifo *audioFifo)
{
std::vector<DVSerialController>::iterator it = m_controllers.begin();
@ -265,7 +265,7 @@ void DVSerialEngine::pushMbeFrame(
{
if (it->worker->hasFifo(audioFifo))
{
it->worker->pushMbeFrame(mbeFrame, mbeRateIndex, mbeVolumeIndex, channels, useLP, upSample48k, audioFifo);
it->worker->pushMbeFrame(mbeFrame, mbeRateIndex, mbeVolumeIndex, channels, useLP, upsampling, audioFifo);
done = true;
}
else if (it->worker->isAvailable())
@ -283,7 +283,7 @@ void DVSerialEngine::pushMbeFrame(
int wNum = itAvail - m_controllers.begin();
qDebug("DVSerialEngine::pushMbeFrame: push %p on empty queue %d", audioFifo, wNum);
itAvail->worker->pushMbeFrame(mbeFrame, mbeRateIndex, mbeVolumeIndex, channels, useLP, upSample48k, audioFifo);
itAvail->worker->pushMbeFrame(mbeFrame, mbeRateIndex, mbeVolumeIndex, channels, useLP, upsampling, audioFifo);
}
else
{

2
sdrbase/dsp/dvserialengine.h
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@ -49,7 +49,7 @@ public:
int mbeVolumeIndex,
unsigned char channels,
bool useHP,
bool upSample48k,
int upsampling,
AudioFifo *audioFifo);
private:

39
sdrbase/dsp/dvserialworker.cpp
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@ -86,8 +86,11 @@ void DVSerialWorker::handleInputMessages()
if (m_dvController.decode(m_dvAudioSamples, decodeMsg->getMbeFrame(), decodeMsg->getMbeRate(), dBVolume))
{
if (decodeMsg->getUpsample48k()) {
upsample6(m_dvAudioSamples, SerialDV::MBE_AUDIO_BLOCK_SIZE, decodeMsg->getChannels());
int upsampling = decodeMsg->getUpsampling();
upsampling = upsampling > 6 ? 6 : upsampling < 1 ? 1 : upsampling;
if (upsampling > 1) {
upsample(upsampling, m_dvAudioSamples, SerialDV::MBE_AUDIO_BLOCK_SIZE, decodeMsg->getChannels());
} else {
noUpsample(m_dvAudioSamples, SerialDV::MBE_AUDIO_BLOCK_SIZE, decodeMsg->getChannels());
}
@ -121,11 +124,11 @@ void DVSerialWorker::pushMbeFrame(const unsigned char *mbeFrame,
int mbeVolumeIndex,
unsigned char channels,
bool useHP,
bool upSample48k,
int upsampling,
AudioFifo *audioFifo)
{
m_audioFifo = audioFifo;
m_inputMessageQueue.push(MsgMbeDecode::create(mbeFrame, mbeRateIndex, mbeVolumeIndex, channels, useHP, upSample48k, audioFifo));
m_inputMessageQueue.push(MsgMbeDecode::create(mbeFrame, mbeRateIndex, mbeVolumeIndex, channels, useHP, upsampling, audioFifo));
}
bool DVSerialWorker::isAvailable()
@ -170,6 +173,34 @@ void DVSerialWorker::upsample6(short *in, int nbSamplesIn, unsigned char channel
}
}
void DVSerialWorker::upsample(int upsampling, short *in, int nbSamplesIn, unsigned char channels)
{
for (int i = 0; i < nbSamplesIn; i++)
{
int cur = (int) in[i];
int prev = (int) m_upsamplerLastValue;
qint16 upsample;
for (int j = 1; j <= upsampling; j++)
{
upsample = m_upsampleFilter.run((qint16) ((cur*j + prev*(upsampling-j)) / upsampling));
m_audioBuffer[m_audioBufferFill].l = channels & 1 ? upsample : 0;
m_audioBuffer[m_audioBufferFill].r = (channels>>1) & 1 ? upsample : 0;
if (m_audioBufferFill < m_audioBuffer.size() - 1)
{
++m_audioBufferFill;
}
else
{
qDebug("DVSerialWorker::upsample6: audio buffer is full check its size");
}
}
m_upsamplerLastValue = in[i];
}
}
void DVSerialWorker::noUpsample(short *in, int nbSamplesIn, unsigned char channels)
{
for (int i = 0; i < nbSamplesIn; i++)

15
sdrbase/dsp/dvserialworker.h
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@ -56,7 +56,7 @@ public:
int getVolumeIndex() const { return m_volumeIndex; }
unsigned char getChannels() const { return m_channels % 4; }
bool getUseHP() const { return m_useHP; }
bool getUpsample48k() const { return m_upSample48k; }
int getUpsampling() const { return m_upsampling; }
AudioFifo *getAudioFifo() { return m_audioFifo; }
static MsgMbeDecode* create(
@ -65,10 +65,10 @@ public:
int volumeIndex,
unsigned char channels,
bool useHP,
bool upSample48k,
int upsampling,
AudioFifo *audioFifo)
{
return new MsgMbeDecode(mbeFrame, (SerialDV::DVRate) mbeRateIndex, volumeIndex, channels, useHP, upSample48k, audioFifo);
return new MsgMbeDecode(mbeFrame, (SerialDV::DVRate) mbeRateIndex, volumeIndex, channels, useHP, upsampling, audioFifo);
}
private:
@ -77,7 +77,7 @@ public:
int m_volumeIndex;
unsigned char m_channels;
bool m_useHP;
bool m_upSample48k;
int m_upsampling;
AudioFifo *m_audioFifo;
MsgMbeDecode(const unsigned char *mbeFrame,
@ -85,14 +85,14 @@ public:
int volumeIndex,
unsigned char channels,
bool useHP,
bool upSample48k,
int upsampling,
AudioFifo *audioFifo) :
Message(),
m_mbeRate(mbeRate),
m_volumeIndex(volumeIndex),
m_channels(channels),
m_useHP(useHP),
m_upSample48k(upSample48k),
m_upsampling(upsampling),
m_audioFifo(audioFifo)
{
memcpy((void *) m_mbeFrame, (const void *) mbeFrame, SerialDV::DVController::getNbMbeBytes(m_mbeRate));
@ -107,7 +107,7 @@ public:
int mbeVolumeIndex,
unsigned char channels,
bool useHP,
bool upSample48k,
int upsampling,
AudioFifo *audioFifo);
bool open(const std::string& serialDevice);
@ -136,6 +136,7 @@ public slots:
private:
//void upsample6(short *in, short *out, int nbSamplesIn);
void upsample6(short *in, int nbSamplesIn, unsigned char channels);
void upsample(int upsampling, short *in, int nbSamplesIn, unsigned char channels);
void noUpsample(short *in, int nbSamplesIn, unsigned char channels);
SerialDV::DVController m_dvController;