bool PhVideoEngine::open(QString fileName)
{
close();
PHDEBUG << fileName;
_clock.setTime(0);
_clock.setRate(0);
_currentTime = PHTIMEMIN;
if(avformat_open_input(&_formatContext, fileName.toStdString().c_str(), NULL, NULL) < 0)
return false;
PHDEBUG << "Retrieve stream information";
if (avformat_find_stream_info(_formatContext, NULL) < 0)
return false; // Couldn't find stream information
av_dump_format(_formatContext, 0, fileName.toStdString().c_str(), 0);
// Find video stream :
for(int i = 0; i < (int)_formatContext->nb_streams; i++) {
AVMediaType streamType = _formatContext->streams[i]->codec->codec_type;
PHDEBUG << i << ":" << streamType;
switch(streamType) {
case AVMEDIA_TYPE_VIDEO:
_videoStream = _formatContext->streams[i];
PHDEBUG << "\t=> video";
break;
case AVMEDIA_TYPE_AUDIO:
if(_useAudio && (_audioStream == NULL))
_audioStream = _formatContext->streams[i];
PHDEBUG << "\t=> audio";
break;
default:
PHDEBUG << "\t=> unknown";
break;
}
}
if(_videoStream == NULL)
return false;
// Looking for timecode type
_tcType = PhTimeCode::computeTimeCodeType(this->framePerSecond());
emit timeCodeTypeChanged(_tcType);
// Reading timestamp :
AVDictionaryEntry *tag = av_dict_get(_formatContext->metadata, "timecode", NULL, AV_DICT_IGNORE_SUFFIX);
if(tag == NULL)
tag = av_dict_get(_videoStream->metadata, "timecode", NULL, AV_DICT_IGNORE_SUFFIX);
if(tag) {
PHDEBUG << "Found timestamp:" << tag->value;
_timeIn = PhTimeCode::timeFromString(tag->value, _tcType);
}
PHDEBUG << "size : " << _videoStream->codec->width << "x" << _videoStream->codec->height;
AVCodec * videoCodec = avcodec_find_decoder(_videoStream->codec->codec_id);
if(videoCodec == NULL) {
PHDEBUG << "Unable to find the codec:" << _videoStream->codec->codec_id;
return false;
}
if (avcodec_open2(_videoStream->codec, videoCodec, NULL) < 0) {
PHDEBUG << "Unable to open the codec:" << _videoStream->codec;
return false;
}
_videoFrame = av_frame_alloc();
PHDEBUG << "length:" << this->length();
PHDEBUG << "fps:" << this->framePerSecond();
if(_audioStream) {
AVCodec* audioCodec = avcodec_find_decoder(_audioStream->codec->codec_id);
if(audioCodec) {
if(avcodec_open2(_audioStream->codec, audioCodec, NULL) < 0) {
PHDEBUG << "Unable to open audio codec.";
_audioStream = NULL;
}
else {
_audioFrame = av_frame_alloc();
PHDEBUG << "Audio OK.";
}
}
else {
PHDEBUG << "Unable to find codec for audio.";
_audioStream = NULL;
}
}
decodeFrame(0);
_fileName = fileName;
return true;
}
void PhMediaPanel::onTCTypeComboChanged()
{
emit timeCodeTypeChanged(timeCodeType());
}
void PhMediaPanel::onTCTypeComboChanged()
{
if(_clock)
_clock->setTimeCodeType(timeCodeType());
emit timeCodeTypeChanged(timeCodeType());
}
