int main(int argc, char *argv[])
{
QCoreApplication a(argc, argv);
QString file = "test.avi";
int idx = a.arguments().indexOf("-f");
if (idx > 0)
file = a.arguments().at(idx + 1);
QString decName("FFmpeg");
idx = a.arguments().indexOf("-vc");
if (idx > 0)
decName = a.arguments().at(idx + 1);
VideoDecoderId cid = VideoDecoderFactory::id(decName.toStdString());
if (cid <= 0) {
qWarning("Can not find decoder: %s", decName.toUtf8().constData());
return 1;
}
VideoDecoder *dec = VideoDecoderFactory::create(cid);
AVDemuxer demux;
if (!demux.loadFile(file)) {
qWarning("Failed to load file: %s", file.toUtf8().constData());
return 1;
}
dec->setCodecContext(demux.videoCodecContext());
dec->prepare();
dec->open();
QElapsedTimer timer;
timer.start();
int count = 0;
VideoFrame frame;
while (!demux.atEnd()) {
if (!demux.readFrame())
continue;
if (dec->decode(demux.packet()->data)) {
/*
* TODO: may contains more than 1 frames
* map from gpu or not?
*/
//frame = dec->frame().clone();
count++;
}
}
qint64 elapsed = timer.elapsed();
int msec = elapsed/1000LL;
qDebug("decoded frames: %d, time: %d, average speed: %d", count, msec, count/msec);
return 0;
}
int main(int argc, char *argv[])
{
QCoreApplication a(argc, argv);
qDebug() << QLatin1String("usage: ") << a.applicationFilePath().split(QLatin1String("/")).last().append(QLatin1String(" url"));
if (a.arguments().size() < 2)
return 0;
QScopedPointer<AudioOutput> ao(new AudioOutput());
AVDemuxer demuxer;
demuxer.setMedia(a.arguments().last());
if (!demuxer.load()) {
qWarning() << "Failed to load file " << demuxer.fileName();
return 1;
}
QScopedPointer<AudioDecoder> dec(AudioDecoder::create()); // delete by user
dec->setCodecContext(demuxer.audioCodecContext());
//dec->prepare();
if (!dec->open())
qFatal("open decoder error");
int astream = demuxer.audioStream();
Packet pkt;
while (!demuxer.atEnd()) {
if (!pkt.isValid()) { // continue to decode previous undecoded data
if (!demuxer.readFrame() || demuxer.stream() != astream)
continue;
pkt = demuxer.packet();
}
if (!dec->decode(pkt)) {
pkt = Packet(); // set invalid to read from demuxer
continue;
}
// decode the rest data in the next loop. read from demuxer if no data remains
pkt.data = QByteArray::fromRawData(pkt.data.constData() + pkt.data.size() - dec->undecodedSize(), dec->undecodedSize());
AudioFrame frame(dec->frame()); // why is faster to call frame() for hwdec? no frame() is very slow for VDA
if (!frame)
continue;
//frame.setAudioResampler(dec->resampler()); // if not set, always create a resampler in AudioFrame.to()
AudioFormat af(frame.format());
if (ao->isOpen()) {
af = ao->audioFormat();
} else {
dec->resampler()->setOutAudioFormat(af);
// if decoded format is not supported by audio renderer, change decoder output format
if (!ao->isSupported(af)) {
af.setSampleFormat(ao->preferredSampleFormat());
af.setChannelLayout(ao->preferredChannelLayout());
dec->resampler()->setOutAudioFormat(af);
dec->resampler()->prepare();
}
// now af is supported by audio renderer. it's safe to open
ao->setAudioFormat(af);
if (!ao->open())
qFatal("Open audio output error");
#if 0 // always resample ONCE due to QtAV bug
// the first format unsupported frame still need to be converted to a supported format
if (!ao->isSupported(frame.format()))
frame = frame.to(af);
#endif
qDebug() << "Input: " << frame.format();
qDebug() << "Output: " << af;
}
printf("playing: %.3f...\r", frame.timestamp());
fflush(0);
// always resample ONCE. otherwise data are all 0x0. QtAV bug
frame = frame.to(af);
QByteArray data(frame.data()); // plane data. currently only packet sample formats are supported.
while (!data.isEmpty()) {
ao->play(QByteArray::fromRawData(data.constData(), qMin(data.size(), ao->bufferSize())));
data.remove(0, qMin(data.size(), ao->bufferSize()));
}
}
// dec, ao will be closed in dtor. demuxer will call unload in dtor
return 0;
}
