mirror of
https://github.com/f4exb/sdrangel.git
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756 lines
22 KiB
C++
756 lines
22 KiB
C++
///////////////////////////////////////////////////////////////////////////////////
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// Copyright (C) 2016 Edouard Griffiths, F4EXB //
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// //
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// This program is free software; you can redistribute it and/or modify //
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// it under the terms of the GNU General Public License as published by //
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// the Free Software Foundation as version 3 of the License, or //
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// //
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// This program is distributed in the hope that it will be useful, //
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// but WITHOUT ANY WARRANTY; without even the implied warranty of //
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the //
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// GNU General Public License V3 for more details. //
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// //
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// You should have received a copy of the GNU General Public License //
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// along with this program. If not, see <http://www.gnu.org/licenses/>. //
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///////////////////////////////////////////////////////////////////////////////////
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#include "ssbmod.h"
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#include <QTime>
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#include <QDebug>
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#include <QMutexLocker>
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#include <stdio.h>
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#include <complex.h>
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#include <dsp/upchannelizer.h>
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#include "dsp/dspengine.h"
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#include "dsp/pidcontroller.h"
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MESSAGE_CLASS_DEFINITION(SSBMod::MsgConfigureSSBMod, Message)
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MESSAGE_CLASS_DEFINITION(SSBMod::MsgConfigureFileSourceName, Message)
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MESSAGE_CLASS_DEFINITION(SSBMod::MsgConfigureFileSourceSeek, Message)
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MESSAGE_CLASS_DEFINITION(SSBMod::MsgConfigureAFInput, Message)
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MESSAGE_CLASS_DEFINITION(SSBMod::MsgConfigureFileSourceStreamTiming, Message)
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MESSAGE_CLASS_DEFINITION(SSBMod::MsgReportFileSourceStreamData, Message)
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MESSAGE_CLASS_DEFINITION(SSBMod::MsgReportFileSourceStreamTiming, Message)
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const int SSBMod::m_levelNbSamples = 480; // every 10ms
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const int SSBMod::m_ssbFftLen = 1024;
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SSBMod::SSBMod(BasebandSampleSink* sampleSink) :
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m_sampleSink(sampleSink),
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m_SSBFilter(0),
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m_DSBFilter(0),
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m_SSBFilterBuffer(0),
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m_DSBFilterBuffer(0),
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m_SSBFilterBufferIndex(0),
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m_DSBFilterBufferIndex(0),
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m_audioFifo(4, 48000),
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m_settingsMutex(QMutex::Recursive),
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m_fileSize(0),
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m_recordLength(0),
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m_sampleRate(48000),
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m_afInput(SSBModInputNone),
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m_levelCalcCount(0),
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m_peakLevel(0.0f),
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m_levelSum(0.0f)
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{
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setObjectName("SSBMod");
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m_SSBFilter = new fftfilt(m_config.m_lowCutoff / m_config.m_audioSampleRate, m_config.m_bandwidth / m_config.m_audioSampleRate, m_ssbFftLen);
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m_DSBFilter = new fftfilt((2.0f * m_config.m_bandwidth) / m_config.m_audioSampleRate, 2 * m_ssbFftLen);
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m_SSBFilterBuffer = new Complex[m_ssbFftLen>>1]; // filter returns data exactly half of its size
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m_DSBFilterBuffer = new Complex[m_ssbFftLen];
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memset(m_SSBFilterBuffer, 0, sizeof(Complex)*(m_ssbFftLen>>1));
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memset(m_DSBFilterBuffer, 0, sizeof(Complex)*(m_ssbFftLen));
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m_config.m_outputSampleRate = 48000;
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m_config.m_inputFrequencyOffset = 0;
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m_config.m_bandwidth = 12500;
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m_config.m_toneFrequency = 1000.0f;
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m_config.m_audioSampleRate = DSPEngine::instance()->getAudioSampleRate();
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m_audioBuffer.resize(1<<14);
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m_audioBufferFill = 0;
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// m_magsqSpectrum = 0.0f;
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// m_magsqSum = 0.0f;
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// m_magsqPeak = 0.0f;
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// m_magsqCount = 0;
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m_sum.real(0.0f);
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m_sum.imag(0.0f);
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m_undersampleCount = 0;
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m_sumCount = 0;
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m_movingAverage.resize(16, 0);
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m_volumeAGC.resize(4096, 0.003, 0);
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m_magsq = 0.0;
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m_toneNco.setFreq(1000.0, m_config.m_audioSampleRate);
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DSPEngine::instance()->addAudioSource(&m_audioFifo);
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// CW keyer
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m_cwKeyer.setSampleRate(m_config.m_audioSampleRate);
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m_cwKeyer.setWPM(13);
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m_cwKeyer.setMode(CWKeyer::CWNone);
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m_cwSmoother.setNbFadeSamples(192); // 4 ms at 48 kHz
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apply();
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}
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SSBMod::~SSBMod()
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{
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if (m_SSBFilter) {
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delete m_SSBFilter;
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}
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if (m_DSBFilter) {
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delete m_DSBFilter;
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}
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if (m_SSBFilterBuffer) {
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delete m_SSBFilterBuffer;
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}
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if (m_DSBFilterBuffer) {
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delete m_DSBFilterBuffer;
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}
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DSPEngine::instance()->removeAudioSource(&m_audioFifo);
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}
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void SSBMod::configure(MessageQueue* messageQueue,
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Real bandwidth,
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Real lowCutoff,
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float toneFrequency,
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float volumeFactor,
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int spanLog2,
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bool audioBinaural,
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bool audioFlipChannels,
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bool dsb,
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bool audioMute,
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bool playLoop)
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{
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Message* cmd = MsgConfigureSSBMod::create(bandwidth,
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lowCutoff,
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toneFrequency,
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volumeFactor,
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spanLog2,
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audioBinaural,
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audioFlipChannels,
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dsb,
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audioMute,
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playLoop);
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messageQueue->push(cmd);
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}
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void SSBMod::pull(Sample& sample)
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{
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Complex ci;
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m_settingsMutex.lock();
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if (m_interpolatorDistance > 1.0f) // decimate
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{
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modulateSample();
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while (!m_interpolator.decimate(&m_interpolatorDistanceRemain, m_modSample, &ci))
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{
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modulateSample();
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}
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}
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else
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{
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if (m_interpolator.interpolate(&m_interpolatorDistanceRemain, m_modSample, &ci))
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{
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modulateSample();
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}
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}
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m_interpolatorDistanceRemain += m_interpolatorDistance;
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ci *= m_carrierNco.nextIQ(); // shift to carrier frequency
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ci *= 29204.0f; //scaling at -1 dB to account for possible filter overshoot
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m_settingsMutex.unlock();
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Real magsq = ci.real() * ci.real() + ci.imag() * ci.imag();
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magsq /= (1<<30);
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m_movingAverage.feed(magsq);
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m_magsq = m_movingAverage.average();
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sample.m_real = (FixReal) ci.real();
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sample.m_imag = (FixReal) ci.imag();
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}
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void SSBMod::pullAudio(int nbSamples)
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{
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int nbSamplesAudio = nbSamples * m_interpolatorDistance;
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if (nbSamplesAudio > m_audioBuffer.size())
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{
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m_audioBuffer.resize(nbSamplesAudio);
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}
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m_audioFifo.read(reinterpret_cast<quint8*>(&m_audioBuffer[0]), nbSamplesAudio, 10);
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m_audioBufferFill = 0;
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}
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void SSBMod::modulateSample()
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{
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pullAF(m_modSample);
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calculateLevel(m_modSample);
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m_audioBufferFill++;
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}
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void SSBMod::pullAF(Complex& sample)
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{
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if (m_running.m_audioMute)
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{
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sample.real(0.0f);
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sample.imag(0.0f);
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return;
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}
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Complex ci;
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fftfilt::cmplx *filtered;
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int n_out = 0;
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int decim = 1<<(m_running.m_spanLog2 - 1);
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unsigned char decim_mask = decim - 1; // counter LSB bit mask for decimation by 2^(m_scaleLog2 - 1)
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switch (m_afInput)
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{
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case SSBModInputTone:
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if (m_running.m_dsb)
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{
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Real t = m_toneNco.next();
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sample.real(t);
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sample.imag(t);
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}
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else
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{
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if (m_running.m_usb) {
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sample = m_toneNco.nextIQ();
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} else {
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sample = m_toneNco.nextQI();
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}
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}
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break;
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case SSBModInputFile:
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// Monaural (mono):
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// sox f4exb_call.wav --encoding float --endian little f4exb_call.raw
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// ffplay -f f32le -ar 48k -ac 1 f4exb_call.raw
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// Binaural (stereo):
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// sox f4exb_call.wav --encoding float --endian little f4exb_call.raw
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// ffplay -f f32le -ar 48k -ac 2 f4exb_call.raw
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if (m_ifstream.is_open())
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{
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if (m_ifstream.eof())
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{
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if (m_running.m_playLoop)
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{
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m_ifstream.clear();
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m_ifstream.seekg(0, std::ios::beg);
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}
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}
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if (m_ifstream.eof())
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{
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ci.real(0.0f);
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ci.imag(0.0f);
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}
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else
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{
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if (m_running.m_audioBinaural)
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{
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Complex c;
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m_ifstream.read(reinterpret_cast<char*>(&c), sizeof(Complex));
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if (m_running.m_audioFlipChannels)
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{
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ci.real(c.imag() * m_running.m_volumeFactor);
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ci.imag(c.real() * m_running.m_volumeFactor);
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}
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else
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{
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ci = c * m_running.m_volumeFactor;
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}
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}
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else
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{
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Real real;
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m_ifstream.read(reinterpret_cast<char*>(&real), sizeof(Real));
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ci.real(real * m_running.m_volumeFactor);
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ci.imag(0.0f);
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}
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}
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}
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else
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{
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ci.real(0.0f);
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ci.imag(0.0f);
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}
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break;
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case SSBModInputAudio:
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if (m_running.m_audioBinaural)
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{
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if (m_running.m_audioFlipChannels)
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{
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ci.real((m_audioBuffer[m_audioBufferFill].r / 32768.0f) * m_running.m_volumeFactor);
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ci.imag((m_audioBuffer[m_audioBufferFill].l / 32768.0f) * m_running.m_volumeFactor);
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}
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else
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{
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ci.real((m_audioBuffer[m_audioBufferFill].l / 32768.0f) * m_running.m_volumeFactor);
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ci.imag((m_audioBuffer[m_audioBufferFill].r / 32768.0f) * m_running.m_volumeFactor);
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}
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}
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else
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{
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ci.real(((m_audioBuffer[m_audioBufferFill].l + m_audioBuffer[m_audioBufferFill].r) / 65536.0f) * m_running.m_volumeFactor);
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ci.imag(0.0f);
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}
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break;
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case SSBModInputCWTone:
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Real fadeFactor;
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if (m_cwKeyer.getSample())
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{
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m_cwSmoother.getFadeSample(true, fadeFactor);
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if (m_running.m_dsb)
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{
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Real t = m_toneNco.next() * fadeFactor;
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sample.real(t);
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sample.imag(t);
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}
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else
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{
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if (m_running.m_usb) {
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sample = m_toneNco.nextIQ() * fadeFactor;
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} else {
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sample = m_toneNco.nextQI() * fadeFactor;
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}
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}
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}
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else
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{
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if (m_cwSmoother.getFadeSample(false, fadeFactor))
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{
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if (m_running.m_dsb)
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{
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Real t = m_toneNco.next() * fadeFactor;
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sample.real(t);
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sample.imag(t);
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}
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else
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{
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if (m_running.m_usb) {
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sample = m_toneNco.nextIQ() * fadeFactor;
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} else {
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sample = m_toneNco.nextQI() * fadeFactor;
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}
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}
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}
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else
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{
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sample.real(0.0f);
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sample.imag(0.0f);
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m_toneNco.setPhase(0);
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}
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}
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break;
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case SSBModInputNone:
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default:
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break;
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}
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if ((m_afInput == SSBModInputFile) || (m_afInput == SSBModInputAudio)) // real audio
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{
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if (m_running.m_dsb)
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{
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n_out = m_DSBFilter->runDSB(ci, &filtered);
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if (n_out > 0)
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{
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memcpy((void *) m_DSBFilterBuffer, (const void *) filtered, n_out*sizeof(Complex));
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m_DSBFilterBufferIndex = 0;
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}
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sample = m_DSBFilterBuffer[m_DSBFilterBufferIndex];
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m_DSBFilterBufferIndex++;
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}
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else
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{
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n_out = m_SSBFilter->runSSB(ci, &filtered, m_running.m_usb);
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if (n_out > 0)
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{
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memcpy((void *) m_SSBFilterBuffer, (const void *) filtered, n_out*sizeof(Complex));
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m_SSBFilterBufferIndex = 0;
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}
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sample = m_SSBFilterBuffer[m_SSBFilterBufferIndex];
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m_SSBFilterBufferIndex++;
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}
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if (n_out > 0)
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{
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for (int i = 0; i < n_out; i++)
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{
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// Downsample by 2^(m_scaleLog2 - 1) for SSB band spectrum display
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// smart decimation with bit gain using float arithmetic (23 bits significand)
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m_sum += filtered[i];
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if (!(m_undersampleCount++ & decim_mask))
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{
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Real avgr = (m_sum.real() / decim) * 29204.0f; //scaling at -1 dB to account for possible filter overshoot
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Real avgi = (m_sum.imag() / decim) * 29204.0f;
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// m_magsqSpectrum = (avgr * avgr + avgi * avgi) / (1<<30);
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//
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// m_magsqSum += m_magsqSpectrum;
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//
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// if (m_magsqSpectrum > m_magsqPeak)
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// {
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// m_magsqPeak = m_magsqSpectrum;
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// }
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//
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// m_magsqCount++;
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if (!m_running.m_dsb & !m_running.m_usb)
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{ // invert spectrum for LSB
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m_sampleBuffer.push_back(Sample(avgi, avgr));
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}
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else
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{
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m_sampleBuffer.push_back(Sample(avgr, avgi));
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}
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m_sum.real(0.0);
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m_sum.imag(0.0);
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}
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}
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}
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} // Real audio
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else if ((m_afInput == SSBModInputTone) || (m_afInput == SSBModInputCWTone)) // tone
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{
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m_sum += sample;
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if (!(m_undersampleCount++ & decim_mask))
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{
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Real avgr = (m_sum.real() / decim) * 29204.0f; //scaling at -1 dB to account for possible filter overshoot
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Real avgi = (m_sum.imag() / decim) * 29204.0f;
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// m_magsqSpectrum = (avgr * avgr + avgi * avgi) / (1<<30);
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//
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// m_magsqSum += m_magsqSpectrum;
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//
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// if (m_magsqSpectrum > m_magsqPeak)
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// {
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// m_magsqPeak = m_magsqSpectrum;
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// }
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//
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// m_magsqCount++;
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if (!m_running.m_dsb & !m_running.m_usb)
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{ // invert spectrum for LSB
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m_sampleBuffer.push_back(Sample(avgi, avgr));
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}
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else
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{
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m_sampleBuffer.push_back(Sample(avgr, avgi));
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}
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m_sum.real(0.0);
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m_sum.imag(0.0);
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}
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if (m_sumCount < (m_running.m_dsb ? m_ssbFftLen : m_ssbFftLen>>1))
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{
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n_out = 0;
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m_sumCount++;
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}
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else
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{
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n_out = m_sumCount;
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m_sumCount = 0;
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}
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}
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if (n_out > 0)
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{
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if (m_sampleSink != 0)
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{
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m_sampleSink->feed(m_sampleBuffer.begin(), m_sampleBuffer.end(), !m_running.m_dsb);
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}
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m_sampleBuffer.clear();
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}
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}
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void SSBMod::calculateLevel(Complex& sample)
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{
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Real t = sample.real(); // TODO: possibly adjust depending on sample type
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if (m_levelCalcCount < m_levelNbSamples)
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{
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m_peakLevel = std::max(std::fabs(m_peakLevel), t);
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m_levelSum += t * t;
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m_levelCalcCount++;
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}
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else
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{
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qreal rmsLevel = sqrt(m_levelSum / m_levelNbSamples);
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//qDebug("NFMMod::calculateLevel: %f %f", rmsLevel, m_peakLevel);
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emit levelChanged(rmsLevel, m_peakLevel, m_levelNbSamples);
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m_peakLevel = 0.0f;
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m_levelSum = 0.0f;
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m_levelCalcCount = 0;
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}
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}
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void SSBMod::start()
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{
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qDebug() << "SSBMod::start: m_outputSampleRate: " << m_config.m_outputSampleRate
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<< " m_inputFrequencyOffset: " << m_config.m_inputFrequencyOffset;
|
|
|
|
m_audioFifo.clear();
|
|
}
|
|
|
|
void SSBMod::stop()
|
|
{
|
|
}
|
|
|
|
bool SSBMod::handleMessage(const Message& cmd)
|
|
{
|
|
if (UpChannelizer::MsgChannelizerNotification::match(cmd))
|
|
{
|
|
UpChannelizer::MsgChannelizerNotification& notif = (UpChannelizer::MsgChannelizerNotification&) cmd;
|
|
|
|
m_config.m_outputSampleRate = notif.getSampleRate();
|
|
m_config.m_inputFrequencyOffset = notif.getFrequencyOffset();
|
|
|
|
apply();
|
|
|
|
qDebug() << "SSBMod::handleMessage: MsgChannelizerNotification:"
|
|
<< " m_outputSampleRate: " << m_config.m_outputSampleRate
|
|
<< " m_inputFrequencyOffset: " << m_config.m_inputFrequencyOffset;
|
|
|
|
return true;
|
|
}
|
|
else if (MsgConfigureSSBMod::match(cmd))
|
|
{
|
|
float band, lowCutoff;
|
|
|
|
MsgConfigureSSBMod& cfg = (MsgConfigureSSBMod&) cmd;
|
|
m_settingsMutex.lock();
|
|
|
|
band = cfg.getBandwidth();
|
|
lowCutoff = cfg.getLowCutoff();
|
|
|
|
if (band < 0) // negative means LSB
|
|
{
|
|
band = -band; // turn to positive
|
|
lowCutoff = -lowCutoff;
|
|
m_config.m_usb = false; // and take note of side band
|
|
}
|
|
else
|
|
{
|
|
m_config.m_usb = true;
|
|
}
|
|
|
|
if (band < 100.0f) // at least 100 Hz
|
|
{
|
|
band = 100.0f;
|
|
lowCutoff = 0;
|
|
}
|
|
|
|
m_config.m_bandwidth = band;
|
|
m_config.m_lowCutoff = lowCutoff;
|
|
|
|
m_config.m_toneFrequency = cfg.getToneFrequency();
|
|
m_config.m_volumeFactor = cfg.getVolumeFactor();
|
|
m_config.m_spanLog2 = cfg.getSpanLog2();
|
|
m_config.m_audioBinaural = cfg.getAudioBinaural();
|
|
m_config.m_audioFlipChannels = cfg.getAudioFlipChannels();
|
|
m_config.m_dsb = cfg.getDSB();
|
|
m_config.m_audioMute = cfg.getAudioMute();
|
|
m_config.m_playLoop = cfg.getPlayLoop();
|
|
|
|
apply();
|
|
|
|
m_settingsMutex.unlock();
|
|
|
|
qDebug() << "SSBMod::handleMessage: MsgConfigureSSBMod:"
|
|
<< " m_bandwidth: " << m_config.m_bandwidth
|
|
<< " m_lowCutoff: " << m_config.m_lowCutoff
|
|
<< " m_toneFrequency: " << m_config.m_toneFrequency
|
|
<< " m_volumeFactor: " << m_config.m_volumeFactor
|
|
<< " m_spanLog2: " << m_config.m_spanLog2
|
|
<< " m_audioBinaural: " << m_config.m_audioBinaural
|
|
<< " m_audioFlipChannels: " << m_config.m_audioFlipChannels
|
|
<< " m_dsb: " << m_config.m_dsb
|
|
<< " m_audioMute: " << m_config.m_audioMute
|
|
<< " m_playLoop: " << m_config.m_playLoop;
|
|
|
|
return true;
|
|
}
|
|
else if (MsgConfigureFileSourceName::match(cmd))
|
|
{
|
|
MsgConfigureFileSourceName& conf = (MsgConfigureFileSourceName&) cmd;
|
|
m_fileName = conf.getFileName();
|
|
openFileStream();
|
|
return true;
|
|
}
|
|
else if (MsgConfigureFileSourceSeek::match(cmd))
|
|
{
|
|
MsgConfigureFileSourceSeek& conf = (MsgConfigureFileSourceSeek&) cmd;
|
|
int seekPercentage = conf.getPercentage();
|
|
seekFileStream(seekPercentage);
|
|
|
|
return true;
|
|
}
|
|
else if (MsgConfigureAFInput::match(cmd))
|
|
{
|
|
MsgConfigureAFInput& conf = (MsgConfigureAFInput&) cmd;
|
|
m_afInput = conf.getAFInput();
|
|
|
|
return true;
|
|
}
|
|
else if (MsgConfigureFileSourceStreamTiming::match(cmd))
|
|
{
|
|
std::size_t samplesCount;
|
|
|
|
if (m_ifstream.eof()) {
|
|
samplesCount = m_fileSize / sizeof(Real);
|
|
} else {
|
|
samplesCount = m_ifstream.tellg() / sizeof(Real);
|
|
}
|
|
|
|
MsgReportFileSourceStreamTiming *report;
|
|
report = MsgReportFileSourceStreamTiming::create(samplesCount);
|
|
getOutputMessageQueue()->push(report);
|
|
|
|
return true;
|
|
}
|
|
else
|
|
{
|
|
return false;
|
|
}
|
|
}
|
|
|
|
void SSBMod::apply()
|
|
{
|
|
if ((m_config.m_bandwidth != m_running.m_bandwidth) ||
|
|
(m_config.m_lowCutoff != m_running.m_lowCutoff) ||
|
|
(m_config.m_audioSampleRate != m_running.m_audioSampleRate))
|
|
{
|
|
m_settingsMutex.lock();
|
|
m_SSBFilter->create_filter(m_config.m_lowCutoff / m_config.m_audioSampleRate, m_config.m_bandwidth / m_config.m_audioSampleRate);
|
|
m_DSBFilter->create_dsb_filter((2.0f * m_config.m_bandwidth) / m_config.m_audioSampleRate);
|
|
m_settingsMutex.unlock();
|
|
}
|
|
|
|
if ((m_config.m_inputFrequencyOffset != m_running.m_inputFrequencyOffset) ||
|
|
(m_config.m_outputSampleRate != m_running.m_outputSampleRate))
|
|
{
|
|
m_settingsMutex.lock();
|
|
m_carrierNco.setFreq(m_config.m_inputFrequencyOffset, m_config.m_outputSampleRate);
|
|
m_settingsMutex.unlock();
|
|
}
|
|
|
|
if((m_config.m_outputSampleRate != m_running.m_outputSampleRate) ||
|
|
(m_config.m_bandwidth != m_running.m_bandwidth) ||
|
|
(m_config.m_audioSampleRate != m_running.m_audioSampleRate))
|
|
{
|
|
m_settingsMutex.lock();
|
|
m_interpolatorDistanceRemain = 0;
|
|
m_interpolatorConsumed = false;
|
|
m_interpolatorDistance = (Real) m_config.m_audioSampleRate / (Real) m_config.m_outputSampleRate;
|
|
m_interpolator.create(48, m_config.m_audioSampleRate, m_config.m_bandwidth, 3.0);
|
|
m_settingsMutex.unlock();
|
|
}
|
|
|
|
if ((m_config.m_toneFrequency != m_running.m_toneFrequency) ||
|
|
(m_config.m_audioSampleRate != m_running.m_audioSampleRate))
|
|
{
|
|
m_settingsMutex.lock();
|
|
m_toneNco.setFreq(m_config.m_toneFrequency, m_config.m_audioSampleRate);
|
|
m_settingsMutex.unlock();
|
|
}
|
|
|
|
if (m_config.m_audioSampleRate != m_running.m_audioSampleRate)
|
|
{
|
|
m_settingsMutex.lock();
|
|
m_cwKeyer.setSampleRate(m_config.m_audioSampleRate);
|
|
m_cwSmoother.setNbFadeSamples(m_config.m_audioSampleRate / 250); // 4 ms
|
|
m_settingsMutex.unlock();
|
|
}
|
|
|
|
if (m_config.m_dsb != m_running.m_dsb)
|
|
{
|
|
if (m_config.m_dsb)
|
|
{
|
|
memset(m_DSBFilterBuffer, 0, sizeof(Complex)*(m_ssbFftLen));
|
|
m_DSBFilterBufferIndex = 0;
|
|
}
|
|
else
|
|
{
|
|
memset(m_SSBFilterBuffer, 0, sizeof(Complex)*(m_ssbFftLen>>1));
|
|
m_SSBFilterBufferIndex = 0;
|
|
}
|
|
}
|
|
|
|
m_running.m_outputSampleRate = m_config.m_outputSampleRate;
|
|
m_running.m_inputFrequencyOffset = m_config.m_inputFrequencyOffset;
|
|
m_running.m_bandwidth = m_config.m_bandwidth;
|
|
m_running.m_lowCutoff = m_config.m_lowCutoff;
|
|
m_running.m_usb = m_config.m_usb;
|
|
m_running.m_toneFrequency = m_config.m_toneFrequency;
|
|
m_running.m_volumeFactor = m_config.m_volumeFactor;
|
|
m_running.m_audioSampleRate = m_config.m_audioSampleRate;
|
|
m_running.m_spanLog2 = m_config.m_spanLog2;
|
|
m_running.m_audioBinaural = m_config.m_audioBinaural;
|
|
m_running.m_audioFlipChannels = m_config.m_audioFlipChannels;
|
|
m_running.m_dsb = m_config.m_dsb;
|
|
m_running.m_audioMute = m_config.m_audioMute;
|
|
m_running.m_playLoop = m_config.m_playLoop;
|
|
}
|
|
|
|
void SSBMod::openFileStream()
|
|
{
|
|
if (m_ifstream.is_open()) {
|
|
m_ifstream.close();
|
|
}
|
|
|
|
m_ifstream.open(m_fileName.toStdString().c_str(), std::ios::binary | std::ios::ate);
|
|
m_fileSize = m_ifstream.tellg();
|
|
m_ifstream.seekg(0,std::ios_base::beg);
|
|
|
|
m_sampleRate = 48000; // fixed rate
|
|
m_recordLength = m_fileSize / (sizeof(Real) * m_sampleRate);
|
|
|
|
qDebug() << "SSBMod::openFileStream: " << m_fileName.toStdString().c_str()
|
|
<< " fileSize: " << m_fileSize << "bytes"
|
|
<< " length: " << m_recordLength << " seconds";
|
|
|
|
MsgReportFileSourceStreamData *report;
|
|
report = MsgReportFileSourceStreamData::create(m_sampleRate, m_recordLength);
|
|
getOutputMessageQueue()->push(report);
|
|
}
|
|
|
|
void SSBMod::seekFileStream(int seekPercentage)
|
|
{
|
|
QMutexLocker mutexLocker(&m_settingsMutex);
|
|
|
|
if (m_ifstream.is_open())
|
|
{
|
|
int seekPoint = ((m_recordLength * seekPercentage) / 100) * m_sampleRate;
|
|
seekPoint *= sizeof(Real);
|
|
m_ifstream.clear();
|
|
m_ifstream.seekg(seekPoint, std::ios::beg);
|
|
}
|
|
}
|