mirror of
https://github.com/f4exb/sdrangel.git
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245 lines
7.6 KiB
C++
245 lines
7.6 KiB
C++
///////////////////////////////////////////////////////////////////////////////////
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// Copyright (C) 2018 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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// (at your option) any later version. //
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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 <algorithm>
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#include "dsp/samplesourcefifo.h"
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#include "bladerf2outputthread.h"
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BladeRF2OutputThread::BladeRF2OutputThread(struct bladerf* dev, unsigned int nbTxChannels, QObject* parent) :
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QThread(parent),
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m_running(false),
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m_dev(dev),
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m_nbChannels(nbTxChannels)
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{
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qDebug("BladeRF2OutputThread::BladeRF2OutputThread");
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m_channels = new Channel[nbTxChannels];
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m_buf = new qint16[2*DeviceBladeRF2::blockSize*nbTxChannels];
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}
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BladeRF2OutputThread::~BladeRF2OutputThread()
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{
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qDebug("BladeRF2OutputThread::~BladeRF2OutputThread");
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if (m_running) {
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stopWork();
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}
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delete[] m_buf;
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delete[] m_channels;
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}
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void BladeRF2OutputThread::startWork()
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{
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m_startWaitMutex.lock();
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start();
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while(!m_running) {
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m_startWaiter.wait(&m_startWaitMutex, 100);
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}
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m_startWaitMutex.unlock();
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}
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void BladeRF2OutputThread::stopWork()
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{
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m_running = false;
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wait();
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}
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void BladeRF2OutputThread::run()
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{
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int res;
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m_running = true;
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m_startWaiter.wakeAll();
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unsigned int nbFifos = getNbFifos();
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if ((m_nbChannels > 0) && (nbFifos > 0))
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{
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int status;
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if (m_nbChannels > 1) {
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status = bladerf_sync_config(m_dev, BLADERF_TX_X2, BLADERF_FORMAT_SC16_Q11, 128, 16384, 32, 1500);
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} else {
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status = bladerf_sync_config(m_dev, BLADERF_TX_X1, BLADERF_FORMAT_SC16_Q11, 64, 8192, 32, 1500);
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}
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if (status < 0)
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{
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qCritical("BladeRF2OutputThread::run: cannot configure streams: %s", bladerf_strerror(status));
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}
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else
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{
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qDebug("BladeRF2OutputThread::run: start running loop");
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while (m_running)
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{
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if (m_nbChannels > 1)
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{
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callbackMO(m_buf, DeviceBladeRF2::blockSize);
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res = bladerf_sync_tx(m_dev, m_buf, DeviceBladeRF2::blockSize*m_nbChannels, 0, 1500);
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}
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else
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{
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callbackSO(m_buf, DeviceBladeRF2::blockSize);
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res = bladerf_sync_tx(m_dev, m_buf, DeviceBladeRF2::blockSize, 0, 1500);
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}
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if (res < 0)
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{
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qCritical("BladeRF2OutputThread::run sync Rx error: %s", bladerf_strerror(res));
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break;
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}
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}
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qDebug("BladeRF2OutputThread::run: stop running loop");
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}
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}
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else
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{
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qWarning("BladeRF2OutputThread::run: no channels or FIFO allocated. Aborting");
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}
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m_running = false;
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}
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unsigned int BladeRF2OutputThread::getNbFifos()
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{
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unsigned int fifoCount = 0;
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for (unsigned int i = 0; i < m_nbChannels; i++)
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{
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if (m_channels[i].m_sampleFifo) {
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fifoCount++;
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}
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}
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return fifoCount;
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}
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void BladeRF2OutputThread::setLog2Interpolation(unsigned int channel, unsigned int log2_interp)
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{
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if (channel < m_nbChannels) {
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m_channels[channel].m_log2Interp = log2_interp;
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}
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}
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unsigned int BladeRF2OutputThread::getLog2Interpolation(unsigned int channel) const
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{
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if (channel < m_nbChannels) {
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return m_channels[channel].m_log2Interp;
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} else {
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return 0;
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}
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}
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void BladeRF2OutputThread::setFifo(unsigned int channel, SampleSourceFifo *sampleFifo)
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{
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if (channel < m_nbChannels) {
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m_channels[channel].m_sampleFifo = sampleFifo;
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}
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}
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SampleSourceFifo *BladeRF2OutputThread::getFifo(unsigned int channel)
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{
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if (channel < m_nbChannels) {
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return m_channels[channel].m_sampleFifo;
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} else {
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return 0;
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}
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}
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void BladeRF2OutputThread::callbackMO(qint16* buf, qint32 samplesPerChannel)
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{
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for (unsigned int channel = 0; channel < m_nbChannels; channel++)
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{
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if (m_channels[channel].m_sampleFifo) {
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callbackSO(&buf[2*samplesPerChannel*channel], samplesPerChannel, channel);
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} else {
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std::fill(&buf[2*samplesPerChannel*channel], &buf[2*samplesPerChannel*channel]+2*samplesPerChannel, 0); // fill with zero samples
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}
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}
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// TODO: write a set of interpolators that can write interleaved samples in output directly
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int status = bladerf_interleave_stream_buffer(BLADERF_TX_X2, BLADERF_FORMAT_SC16_Q11 , samplesPerChannel*m_nbChannels, (void *) buf);
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if (status < 0)
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{
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qCritical("BladeRF2OutputThread::callbackMI: cannot interleave buffer: %s", bladerf_strerror(status));
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return;
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}
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}
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// Interpolate according to specified log2 (ex: log2=4 => decim=16). len is a number of samples (not a number of I or Q)
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void BladeRF2OutputThread::callbackSO(qint16* buf, qint32 len, unsigned int channel)
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{
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if (m_channels[channel].m_sampleFifo)
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{
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float bal = m_channels[channel].m_sampleFifo->getRWBalance();
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if (bal < -0.25) {
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qDebug("BladeRF2OutputThread::callbackSO: read lags: %f", bal);
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} else if (bal > 0.25) {
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qDebug("BladeRF2OutputThread::callbackSO: read leads: %f", bal);
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}
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SampleVector::iterator beginRead;
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m_channels[channel].m_sampleFifo->readAdvance(beginRead, len/(1<<m_channels[channel].m_log2Interp));
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beginRead -= len;
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if (m_channels[channel].m_log2Interp == 0)
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{
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m_channels[channel].m_interpolators.interpolate1(&beginRead, buf, len*2);
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}
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else
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{
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switch (m_channels[channel].m_log2Interp)
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{
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case 1:
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m_channels[channel].m_interpolators.interpolate2_cen(&beginRead, buf, len*2);
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break;
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case 2:
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m_channels[channel].m_interpolators.interpolate4_cen(&beginRead, buf, len*2);
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break;
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case 3:
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m_channels[channel].m_interpolators.interpolate8_cen(&beginRead, buf, len*2);
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break;
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case 4:
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m_channels[channel].m_interpolators.interpolate16_cen(&beginRead, buf, len*2);
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break;
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case 5:
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m_channels[channel].m_interpolators.interpolate32_cen(&beginRead, buf, len*2);
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break;
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case 6:
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m_channels[channel].m_interpolators.interpolate64_cen(&beginRead, buf, len*2);
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break;
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default:
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break;
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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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std::fill(buf, buf+2*len, 0);
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}
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}
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