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sdrangel/plugins/samplesource/fileinput/fileinputworker.cpp
2020-11-04 21:51:55 +01:00

237 lines
6.8 KiB
C++

///////////////////////////////////////////////////////////////////////////////////
// Copyright (C) 2015-2019 Edouard Griffiths, F4EXB //
// //
// This program is free software; you can redistribute it and/or modify //
// it under the terms of the GNU General Public License as published by //
// the Free Software Foundation as version 3 of the License, or //
// (at your option) any later version. //
// //
// This program is distributed in the hope that it will be useful, //
// but WITHOUT ANY WARRANTY; without even the implied warranty of //
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the //
// GNU General Public License V3 for more details. //
// //
// You should have received a copy of the GNU General Public License //
// along with this program. If not, see <http://www.gnu.org/licenses/>. //
///////////////////////////////////////////////////////////////////////////////////
#include <stdio.h>
#include <errno.h>
#include <QDebug>
#include "dsp/filerecord.h"
#include "fileinputworker.h"
#include "dsp/samplesinkfifo.h"
#include "util/messagequeue.h"
MESSAGE_CLASS_DEFINITION(FileInputWorker::MsgReportEOF, Message)
FileInputWorker::FileInputWorker(std::ifstream *samplesStream,
SampleSinkFifo* sampleFifo,
const QTimer& timer,
MessageQueue *fileInputMessageQueue,
QObject* parent) :
QObject(parent),
m_running(false),
m_ifstream(samplesStream),
m_fileBuf(nullptr),
m_convertBuf(nullptr),
m_bufsize(0),
m_chunksize(0),
m_sampleFifo(sampleFifo),
m_samplesCount(0),
m_timer(timer),
m_fileInputMessageQueue(fileInputMessageQueue),
m_samplerate(0),
m_samplesize(0),
m_samplebytes(0),
m_throttlems(FILESOURCE_THROTTLE_MS),
m_throttleToggle(false)
{
}
FileInputWorker::~FileInputWorker()
{
if (m_running) {
stopWork();
}
if (m_fileBuf) {
free(m_fileBuf);
}
if (m_convertBuf) {
free(m_convertBuf);
}
}
void FileInputWorker::startWork()
{
qDebug() << "FileInputThread::startWork: ";
if (m_ifstream->is_open())
{
qDebug() << "FileInputThread::startWork: file stream open, starting...";
m_elapsedTimer.start();
connect(&m_timer, SIGNAL(timeout()), this, SLOT(tick()));
m_running = true;
}
else
{
qDebug() << "FileInputThread::startWork: file stream closed, not starting.";
}
}
void FileInputWorker::stopWork()
{
qDebug() << "FileInputThread::stopWork";
disconnect(&m_timer, SIGNAL(timeout()), this, SLOT(tick()));
m_running = false;
}
void FileInputWorker::setSampleRateAndSize(int samplerate, quint32 samplesize)
{
qDebug() << "FileInputThread::setSampleRateAndSize:"
<< " new rate:" << samplerate
<< " new size:" << samplesize
<< " old rate:" << m_samplerate
<< " old size:" << m_samplesize;
if ((samplerate != m_samplerate) || (samplesize != m_samplesize))
{
if (m_running) {
stopWork();
}
m_samplerate = samplerate;
m_samplesize = samplesize;
m_samplebytes = m_samplesize > 16 ? sizeof(int32_t) : sizeof(int16_t);
m_chunksize = (m_samplerate * 2 * m_samplebytes * m_throttlems) / 1000;
setBuffers(m_chunksize);
}
//m_samplerate = samplerate;
}
void FileInputWorker::setBuffers(std::size_t chunksize)
{
if (chunksize > m_bufsize)
{
m_bufsize = chunksize;
int nbSamples = m_bufsize/(2 * m_samplebytes);
if (!m_fileBuf)
{
qDebug() << "FileInputThread::setBuffers: Allocate file buffer";
m_fileBuf = (quint8*) malloc(m_bufsize);
}
else
{
qDebug() << "FileInputThread::setBuffers: Re-allocate file buffer";
quint8 *buf = m_fileBuf;
m_fileBuf = (quint8*) realloc((void*) m_fileBuf, m_bufsize);
if (!m_fileBuf) {
free(buf);
}
}
if (!m_convertBuf)
{
qDebug() << "FileInputThread::setBuffers: Allocate conversion buffer";
m_convertBuf = (quint8*) malloc(nbSamples*sizeof(Sample));
}
else
{
qDebug() << "FileInputThread::setBuffers: Re-allocate conversion buffer";
quint8 *buf = m_convertBuf;
m_convertBuf = (quint8*) realloc((void*) m_convertBuf, nbSamples*sizeof(Sample));
if (!m_convertBuf) {
free(buf);
}
}
qDebug() << "FileInputThread::setBuffers: size: " << m_bufsize
<< " #samples: " << nbSamples;
}
}
void FileInputWorker::tick()
{
if (m_running)
{
qint64 throttlems = m_elapsedTimer.restart();
if (throttlems != m_throttlems)
{
m_throttlems = throttlems;
m_chunksize = 2 * m_samplebytes * ((m_samplerate * (m_throttlems+(m_throttleToggle ? 1 : 0))) / 1000);
m_throttleToggle = !m_throttleToggle;
setBuffers(m_chunksize);
}
// read samples directly feeding the SampleFifo (no callback)
m_ifstream->read(reinterpret_cast<char*>(m_fileBuf), m_chunksize);
if (m_ifstream->eof())
{
writeToSampleFifo(m_fileBuf, (qint32) m_ifstream->gcount());
MsgReportEOF *message = MsgReportEOF::create();
m_fileInputMessageQueue->push(message);
}
else
{
writeToSampleFifo(m_fileBuf, (qint32) m_chunksize);
m_samplesCount += m_chunksize / (2 * m_samplebytes);
}
}
}
void FileInputWorker::writeToSampleFifo(const quint8* buf, qint32 nbBytes)
{
if (m_samplesize == 16)
{
if (SDR_RX_SAMP_SZ == 16)
{
m_sampleFifo->write(buf, nbBytes);
}
else if (SDR_RX_SAMP_SZ == 24)
{
FixReal *convertBuf = (FixReal *) m_convertBuf;
const int16_t *fileBuf = (int16_t *) buf;
int nbSamples = nbBytes / (2 * m_samplebytes);
for (int is = 0; is < nbSamples; is++)
{
convertBuf[2*is] = fileBuf[2*is] << 8;
convertBuf[2*is+1] = fileBuf[2*is+1] << 8;
}
m_sampleFifo->write((quint8*) convertBuf, nbSamples*sizeof(Sample));
}
}
else if (m_samplesize == 24)
{
if (SDR_RX_SAMP_SZ == 24)
{
m_sampleFifo->write(buf, nbBytes);
}
else if (SDR_RX_SAMP_SZ == 16)
{
FixReal *convertBuf = (FixReal *) m_convertBuf;
const int32_t *fileBuf = (int32_t *) buf;
int nbSamples = nbBytes / (2 * m_samplebytes);
for (int is = 0; is < nbSamples; is++)
{
convertBuf[2*is] = fileBuf[2*is] >> 8;
convertBuf[2*is+1] = fileBuf[2*is+1] >> 8;
}
m_sampleFifo->write((quint8*) convertBuf, nbSamples*sizeof(Sample));
}
}
}