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FreeDV demod: initialize FreeDV stuff

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This commit is contained in:
f4exb 2019-02-25 02:29:59 +01:00
parent d5c1b2be97
commit a66afffd9e
3 changed files with 114 additions and 0 deletions
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3
plugins/channelrx/demodfreedv/CMakeLists.txt
View File

@ -24,6 +24,7 @@ include_directories(
.
${CMAKE_CURRENT_BINARY_DIR}
${CMAKE_SOURCE_DIR}/swagger/sdrangel/code/qt5/client
${CODEC2_INCLUDE_DIR}
)
add_definitions(${QT_DEFINITIONS})
@ -42,6 +43,8 @@ target_link_libraries(demodfreedv
${QT_LIBRARIES}
sdrbase
sdrgui
swagger
${CODEC2_LIBRARIES}
)
target_link_libraries(demodfreedv Qt5::Core Qt5::Widgets)

98
plugins/channelrx/demodfreedv/freedvdemod.cpp
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@ -22,6 +22,8 @@
#include <QNetworkReply>
#include <QBuffer>
#include "codec2/freedv_api.h"
#include "SWGChannelSettings.h"
#include "SWGFreeDVDemodSettings.h"
#include "SWGChannelReport.h"
@ -59,6 +61,14 @@ FreeDVDemod::FreeDVDemod(DeviceSourceAPI *deviceAPI) :
m_sampleSink(0),
m_audioFifo(24000),
m_modemSampleRate(48000),
m_freeDV(0),
m_nSpeechSamples(0),
m_nMaxModemSamples(0),
m_iSpeech(0),
m_iModem(0),
m_speechOut(0),
m_modIn(0),
m_scaleFactor(SDR_RX_SCALEF),
m_settingsMutex(QMutex::Recursive)
{
setObjectName(m_channelId);
@ -413,6 +423,94 @@ void FreeDVDemod::applyFreeDVMode(FreeDVDemodSettings::FreeDVMode mode)
}
}
// FreeDV object
if (m_freeDV) {
freedv_close(m_freeDV);
}
int fdv_mode = -1;
switch(mode)
{
case FreeDVDemodSettings::FreeDVMode700D:
fdv_mode = FREEDV_MODE_700D;
m_scaleFactor = SDR_RX_SCALEF / 3.2f;
break;
case FreeDVDemodSettings::FreeDVMode800XA:
fdv_mode = FREEDV_MODE_800XA;
m_scaleFactor = SDR_RX_SCALEF / 8.2f;
break;
case FreeDVDemodSettings::FreeDVMode1600:
fdv_mode = FREEDV_MODE_1600;
m_scaleFactor = SDR_RX_SCALEF / 3.2f;
break;
case FreeDVDemodSettings::FreeDVMode2400A:
default:
fdv_mode = FREEDV_MODE_2400A;
m_scaleFactor = SDR_RX_SCALEF / 8.2f;
break;
}
if (fdv_mode == FREEDV_MODE_700D)
{
struct freedv_advanced adv;
adv.interleave_frames = 1;
m_freeDV = freedv_open_advanced(fdv_mode, &adv);
}
else
{
m_freeDV = freedv_open(fdv_mode);
}
if (m_freeDV)
{
freedv_set_test_frames(m_freeDV, 0);
freedv_set_snr_squelch_thresh(m_freeDV, -100.0);
freedv_set_squelch_en(m_freeDV, 0);
freedv_set_clip(m_freeDV, 0);
freedv_set_tx_bpf(m_freeDV, 1);
freedv_set_ext_vco(m_freeDV, 0);
int nSpeechSamples = freedv_get_n_speech_samples(m_freeDV);
int nNomModemSamples = freedv_get_n_max_modem_samples(m_freeDV);
int Fs = freedv_get_modem_sample_rate(m_freeDV);
int Rs = freedv_get_modem_symbol_rate(m_freeDV);
if (nSpeechSamples != m_nSpeechSamples)
{
if (m_speechOut) {
delete[] m_speechOut;
}
m_speechOut = new int16_t[m_nSpeechSamples];
m_nSpeechSamples = nSpeechSamples;
}
if (nNomModemSamples != m_nMaxModemSamples)
{
if (m_modIn) {
delete[] m_modIn;
}
m_modIn = new int16_t[m_nMaxModemSamples];
m_nMaxModemSamples = nNomModemSamples;
}
m_iSpeech = 0;
m_iModem = 0;
m_nin = freedv_nin(m_freeDV);
qDebug() << "FreeDVMod::applyFreeDVMode:"
<< " fdv_mode: " << fdv_mode
<< " m_modemSampleRate: " << m_modemSampleRate
<< " Fs: " << Fs
<< " Rs: " << Rs
<< " m_nSpeechSamples: " << m_nSpeechSamples
<< " m_nMaxModemSamples: " << m_nMaxModemSamples
<< " m_nin: " << m_nin;
}
m_settingsMutex.unlock();
}

13
plugins/channelrx/demodfreedv/freedvdemod.h
View File

@ -29,6 +29,7 @@
#include "dsp/fftfilt.h"
#include "dsp/agc.h"
#include "audio/audiofifo.h"
#include "audio/audioresampler.h"
#include "util/message.h"
#include "util/doublebufferfifo.h"
@ -42,6 +43,7 @@ class QNetworkReply;
class DeviceSourceAPI;
class ThreadedBasebandSampleSink;
class DownChannelizer;
struct freedv;
class FreeDVDemod : public BasebandSampleSink, public ChannelSinkAPI {
Q_OBJECT
@ -314,6 +316,17 @@ private:
QNetworkAccessManager *m_networkManager;
QNetworkRequest m_networkRequest;
struct freedv *m_freeDV;
int m_nSpeechSamples;
int m_nMaxModemSamples;
int m_nin;
int m_iSpeech;
int m_iModem;
int16_t *m_speechOut;
int16_t *m_modIn;
float m_scaleFactor; //!< divide by this amount to scale from int16 to float in [-1.0, 1.0] interval
AudioResampler m_audioResampler;
QMutex m_settingsMutex;
void applyChannelSettings(int inputSampleRate, int inputFrequencyOffset, bool force = false);