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/*
* Cantata
*
* Copyright (c) 2011-2022 Craig Drummond <craig.p.drummond@gmail.com>
*
* ----
*
* 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; either version 2 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 for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; see the file COPYING. If not, write to
* the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
*/
#include "transcodingjob.h"
#include "device.h"
#include <QRegularExpression>
#include <QStringList>
TranscodingJob::TranscodingJob(const Encoders::Encoder& enc, int val, const QString& src, const QString& dest, const DeviceOptions& d, int co, const Song& s)
: CopyJob(src, dest, d, co, s), encoder(enc), value(val), process(nullptr), duration(-1)
{
}
TranscodingJob::~TranscodingJob()
{
delete process;
}
void TranscodingJob::run()
{
QString src(updateTagsLocal());
if (src.isEmpty()) {
return;
}
if (stopRequested) {
emit result(Device::Cancelled);
}
else {
QStringList parameters = encoder.params(value, src, destFile);
process = new QProcess;
process->setProcessChannelMode(QProcess::MergedChannels);
process->setReadChannel(QProcess::StandardOutput);
connect(process, SIGNAL(readyReadStandardOutput()), this, SLOT(processOutput()));
connect(process, SIGNAL(finished(int, QProcess::ExitStatus)), this, SLOT(finished(int, QProcess::ExitStatus)));
QString cmd = parameters.takeFirst();
process->start(cmd, parameters);
}
}
void TranscodingJob::stop()
{
if (process) {
process->close();
process->deleteLater();
process = nullptr;
emit result(Device::Cancelled);
}
}
void TranscodingJob::finished(int exitCode, QProcess::ExitStatus exitStatus)
{
Q_UNUSED(exitStatus)
if (!process) {
return;
}
if (stopRequested) {
emit result(Device::Cancelled);
return;
}
if (0 == exitCode) {
updateTagsDest();
copyCover(srcFile);
}
emit result(0 == exitCode ? Device::Ok : Device::TranscodeFailed);
}
void TranscodingJob::processOutput()
{
if (stopRequested) {
emit result(Device::Cancelled);
return;
}
QString output = process->readAllStandardOutput().data();
if (output.simplified().isEmpty()) {
return;
}
if (!data.isEmpty()) {
output = data + output;
}
if (-1 == duration) {
duration = computeDuration(output);
}
if (duration > 0) {
qint64 prog = computeProgress(output);
if (prog > -1) {
setPercent((prog * 100) / duration);
}
}
if (!output.endsWith('\n') && !output.endsWith('\r')) {
int last = output.lastIndexOf('\n');
if (-1 == last) {
last = output.lastIndexOf('\r');
}
if (last > -1) {
data = output.mid(last + 1);
}
else {
data = output;
}
}
}
inline qint64 TranscodingJob::computeDuration(const QString& output)
{
//We match something like "Duration: 00:04:33.60"
static const QRegularExpression durationRegexp("Duration: (\\d{2,}):(\\d{2}):(\\d{2})\\.(\\d{2})");
QRegularExpressionMatch match;
if (output.contains(durationRegexp, &match)) {
//duration is in csec
return match.captured(1).toLong() * 60 * 60 * 100 + match.captured(2).toInt() * 60 * 100 + match.captured(3).toInt() * 100 + match.captured(4).toInt();
}
else {
return -1;
}
}
inline qint64 TranscodingJob::computeProgress(const QString& output)
{
//Output is like size= 323kB time=18.10 bitrate= 146.0kbits/s
//We're going to use the "time" column, which counts the elapsed time in seconds.
static const QRegularExpression timeRegexp("time=(\\d+)\\.(\\d{2})");
QRegularExpressionMatch match;
if (output.contains(timeRegexp, &match)) {
return match.captured(1).toLong() * 100 + match.captured(2).toInt();
}
else {
return -1;
}
}
#include "moc_transcodingjob.cpp"
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