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DV serial support implemented

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This commit is contained in:
f4exb 2016-05-08 10:48:13 +02:00
parent 4daa54b8b7
commit 0cc8bc3c89
2 changed files with 58 additions and 6 deletions
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58
sdrbase/dsp/dvserialworker.cpp
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@ -26,7 +26,8 @@ MESSAGE_CLASS_DEFINITION(DVSerialWorker::MsgTest, Message)
DVSerialWorker::DVSerialWorker() : DVSerialWorker::DVSerialWorker() :
m_running(false), m_running(false),
m_currentGainIn(0), m_currentGainIn(0),
m_currentGainOut(0) m_currentGainOut(0),
m_upsamplerLastValue(0)
{ {
} }
@ -69,19 +70,66 @@ void DVSerialWorker::handleInputMessages()
while ((message = m_inputMessageQueue.pop()) != 0) while ((message = m_inputMessageQueue.pop()) != 0)
{ {
qDebug("DVSerialWorker::handleInputMessages: message");
if (MsgMbeDecode::match(*message)) if (MsgMbeDecode::match(*message))
{ {
MsgMbeDecode *decodeMsg = (MsgMbeDecode *) message; MsgMbeDecode *decodeMsg = (MsgMbeDecode *) message;
int dBVolume = (decodeMsg->getVolumeIndex() - 50) / 5; int dBVolume = (decodeMsg->getVolumeIndex() - 50) / 5;
if (m_dvController.decode(m_audioSamples, decodeMsg->getMbeFrame(), decodeMsg->getMbeRate(), dBVolume)) if (m_dvController.decode(m_dvAudioSamples, decodeMsg->getMbeFrame(), decodeMsg->getMbeRate(), dBVolume))
{ {
decodeMsg->getAudioFifo()->write((const quint8 *) m_audioSamples, SerialDV::MBE_AUDIO_BLOCK_SIZE, 10); upsample6(m_dvAudioSamples, m_audioSamples, SerialDV::MBE_AUDIO_BLOCK_SIZE);
decodeMsg->getAudioFifo()->write((const quint8 *) m_audioSamples, SerialDV::MBE_AUDIO_BLOCK_SIZE * 6, 10);
} }
} }
delete message; delete message;
} }
} }
void DVSerialWorker::upsample6(short *in, short *out, int nbSamplesIn)
{
for (int i = 0; i < nbSamplesIn; i++)
{
int cur = (int) in[i];
int prev = (int) m_upsamplerLastValue;
short up;
up = (cur*1 + prev*5) / 6;
*out = up;
out++;
*out = up;
out++;
up = (cur*2 + prev*4) / 6;
*out = up;
out++;
*out = up;
out++;
up = (cur*3 + prev*3) / 6;
*out = up;
out++;
*out = up;
out++;
up = (cur*4 + prev*2) / 6;
*out = up;
out++;
*out = up;
out++;
up = (cur*5 + prev*1) / 6;
*out = up;
out++;
*out = up;
out++;
up = in[i];
*out = up;
out++;
*out = up;
out++;
m_upsamplerLastValue = in[i];
}
}

6
sdrbase/dsp/dvserialworker.h
View File

@ -97,11 +97,15 @@ public slots:
void handleInputMessages(); void handleInputMessages();
private: private:
void upsample6(short *in, short *out, int nbSamplesIn);
SerialDV::DVController m_dvController; SerialDV::DVController m_dvController;
bool m_running; bool m_running;
int m_currentGainIn; int m_currentGainIn;
int m_currentGainOut; int m_currentGainOut;
short m_audioSamples[SerialDV::MBE_AUDIO_BLOCK_SIZE]; short m_dvAudioSamples[SerialDV::MBE_AUDIO_BLOCK_SIZE];
short m_audioSamples[SerialDV::MBE_AUDIO_BLOCK_SIZE * 6 * 2]; // upsample to 48k and duplicate channel
short m_upsamplerLastValue;
}; };
#endif /* SDRBASE_DSP_DVSERIALWORKER_H_ */ #endif /* SDRBASE_DSP_DVSERIALWORKER_H_ */