mirror of
https://github.com/f4exb/sdrangel.git
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185 lines
5.9 KiB
C++
185 lines
5.9 KiB
C++
///////////////////////////////////////////////////////////////////////////////////
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// Copyright (C) 2016 F4EXB //
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// written by Edouard Griffiths //
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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 <unistd.h>
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#include "dsp/dvserialworker.h"
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#include "audio/audiofifo.h"
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MESSAGE_CLASS_DEFINITION(DVSerialWorker::MsgMbeDecode, Message)
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MESSAGE_CLASS_DEFINITION(DVSerialWorker::MsgTest, Message)
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DVSerialWorker::DVSerialWorker() :
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m_running(false),
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m_currentGainIn(0),
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m_currentGainOut(0)
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{
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}
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DVSerialWorker::~DVSerialWorker()
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{
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}
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bool DVSerialWorker::open(const std::string& serialDevice)
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{
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return m_dvController.open(serialDevice);
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}
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void DVSerialWorker::close()
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{
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m_dvController.close();
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}
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void DVSerialWorker::process()
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{
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m_running = true;
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qDebug("DVSerialWorker::process: started");
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while (m_running)
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{
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sleep(1);
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}
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qDebug("DVSerialWorker::process: stopped");
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emit finished();
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}
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void DVSerialWorker::stop()
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{
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m_running = false;
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}
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void DVSerialWorker::handleInputMessages()
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{
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Message* message;
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AudioFifo *audioFifo[m_nbFifoSlots];
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for (int i = 0; i < m_nbFifoSlots; i++)
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{
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audioFifo[i] = 0;
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m_fifoSlots[i].m_audioBufferFill = 0;
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}
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while ((message = m_inputMessageQueue.pop()) != 0)
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{
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if (MsgMbeDecode::match(*message))
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{
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MsgMbeDecode *decodeMsg = (MsgMbeDecode *) message;
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int dBVolume = (decodeMsg->getVolumeIndex() - 30) / 2;
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unsigned int fifoSlot = decodeMsg->getFifoSlot();
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if (m_dvController.decode(m_fifoSlots[fifoSlot].m_dvAudioSamples, decodeMsg->getMbeFrame(), decodeMsg->getMbeRate(), dBVolume))
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{
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upsample6(m_fifoSlots[fifoSlot].m_dvAudioSamples,
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SerialDV::MBE_AUDIO_BLOCK_SIZE,
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decodeMsg->getChannels(),
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fifoSlot);
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audioFifo[fifoSlot] = decodeMsg->getAudioFifo();
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}
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else
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{
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qDebug("DVSerialWorker::handleInputMessages: MsgMbeDecode: decode failed");
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}
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}
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delete message;
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}
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for (int i = 0; i < m_nbFifoSlots; i++)
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{
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if (audioFifo[i])
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{
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uint res = audioFifo[i]->write((const quint8*)&m_fifoSlots[i].m_audioBuffer[0], m_fifoSlots[i].m_audioBufferFill, 10);
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if (res != m_fifoSlots[i].m_audioBufferFill)
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{
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qDebug("DVSerialWorker::handleInputMessages: %u/%u audio samples written", res, m_fifoSlots[i].m_audioBufferFill);
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}
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m_fifoSlots[i].m_timestamp = QDateTime::currentDateTime();
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}
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}
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}
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void DVSerialWorker::pushMbeFrame(const unsigned char *mbeFrame,
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int mbeRateIndex,
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int mbeVolumeIndex,
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unsigned char channels, AudioFifo *audioFifo,
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unsigned int fifoSlot)
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{
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m_fifoSlots[0].m_audioFifo = audioFifo;
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m_inputMessageQueue.push(MsgMbeDecode::create(mbeFrame, mbeRateIndex, mbeVolumeIndex, channels, audioFifo, fifoSlot));
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}
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bool DVSerialWorker::isAvailable(unsigned int& fifoSlot)
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{
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for (fifoSlot = 0; fifoSlot < m_nbFifoSlots; fifoSlot++)
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{
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if (m_fifoSlots[fifoSlot].m_audioFifo == 0)
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{
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return true;
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}
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else if (m_fifoSlots[fifoSlot].m_timestamp.time().msecsTo(QDateTime::currentDateTime().time()) > 1000)
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{
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return true;
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}
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}
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return false;
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}
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bool DVSerialWorker::hasFifo(AudioFifo *audioFifo, unsigned int& fifoSlot)
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{
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for (fifoSlot = 0; fifoSlot < m_nbFifoSlots; fifoSlot++)
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{
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if (m_fifoSlots[fifoSlot].m_audioFifo == audioFifo)
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{
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return true;
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}
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}
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return false;
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}
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void DVSerialWorker::upsample6(short *in, int nbSamplesIn, unsigned char channels, unsigned int fifoSlot)
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{
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for (int i = 0; i < nbSamplesIn; i++)
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{
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int cur = (int) in[i];
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int prev = (int) m_fifoSlots[fifoSlot].m_upsamplerLastValue;
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qint16 upsample;
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for (int j = 1; j < 7; j++)
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{
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upsample = m_fifoSlots[fifoSlot].m_upsampleFilter.run((qint16) ((cur*j + prev*(6-j)) / 6));
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m_fifoSlots[fifoSlot].m_audioBuffer[m_fifoSlots[fifoSlot].m_audioBufferFill].l = channels & 1 ? upsample : 0;
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m_fifoSlots[fifoSlot].m_audioBuffer[m_fifoSlots[fifoSlot].m_audioBufferFill].r = (channels>>1) & 1 ? upsample : 0;
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if (m_fifoSlots[fifoSlot].m_audioBufferFill < m_fifoSlots[fifoSlot].m_audioBuffer.size() - 1)
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{
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++m_fifoSlots[fifoSlot].m_audioBufferFill;
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}
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else
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{
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qDebug("DVSerialWorker::upsample6: audio buffer is full check its size");
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}
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}
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m_fifoSlots[fifoSlot].m_upsamplerLastValue = in[i];
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}
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}
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