std::pair<int, int> Option::getRatio() const
{
Rational out_val;
int error = av_opt_get_q( _avContext, getName().c_str(), AV_OPT_SEARCH_CHILDREN, &out_val );
checkFFmpegGetOption( error );
return std::make_pair( out_val.num, out_val.den );
}
bool D2V::printSettings() {
int stream_type = getStreamType(f->fctx->iformat->name);
int video_id = video_stream->id;
int audio_id = 0;
int64_t ts_packetsize = 0;
if (stream_type == TRANSPORT_STREAM) {
const AVStream *audio_stream = nullptr;
for (unsigned i = 0; i < f->fctx->nb_streams; i++) {
if (f->fctx->streams[i]->codec->codec_type == AVMEDIA_TYPE_AUDIO) {
audio_stream = f->fctx->streams[i];
break;
}
}
if (audio_stream)
audio_id = audio_stream->id;
if (av_opt_get_int(f->fctx, "ts_packetsize", AV_OPT_SEARCH_CHILDREN, &ts_packetsize) < 0)
ts_packetsize = 0;
}
int mpeg_type = 0;
if (video_stream->codec->codec_id == AV_CODEC_ID_MPEG1VIDEO)
mpeg_type = 1;
else if (video_stream->codec->codec_id == AV_CODEC_ID_MPEG2VIDEO)
mpeg_type = 2;
int yuvrgb_scale = input_range == ColourRangeLimited ? 1 : 0;
int width, height;
if (av_opt_get_image_size(video_stream->codec, "video_size", 0, &width, &height) < 0)
width = height = -1;
AVRational sar;
if (av_opt_get_q(video_stream->codec, "aspect", 0, &sar) < 0)
sar = { 1, 1 };
AVRational dar = av_mul_q(av_make_q(width, height), sar);
av_reduce(&dar.num, &dar.den, dar.num, dar.den, 1024);
// No AVOption for framerate?
AVRational frame_rate = video_stream->codec->framerate;
std::string settings;
settings += "Stream_Type=" + std::to_string(stream_type) + "\n";
if (stream_type == TRANSPORT_STREAM) {
char pids[100] = { 0 };
snprintf(pids, 100, "%x,%x,%x", video_id, audio_id, 0);
settings += "MPEG2_Transport_PID=";
settings += pids;
settings += "\n";
settings += "Transport_Packet_Size=" + std::to_string(ts_packetsize) + "\n";
}
settings += "MPEG_Type=" + std::to_string(mpeg_type) + "\n";
settings += "iDCT_Algorithm=6\n"; // "32-bit SSEMMX (Skal)". No one cares anyway.
settings += "YUVRGB_Scale=" + std::to_string(yuvrgb_scale) + "\n";
settings += "Luminance_Filter=0,0\n"; // We don't care.
settings += "Clipping=0,0,0,0\n"; // We don't crop here.
settings += "Aspect_Ratio=" + std::to_string(dar.num) + ":" + std::to_string(dar.den) + "\n";
settings += "Picture_Size=" + std::to_string(width) + "x" + std::to_string(height) + "\n";
settings += "Field_Operation=0\n"; // Always tell them honor the pulldown flags.
settings += "Frame_Rate=" + std::to_string((int)((float)frame_rate.num * 1000 / frame_rate.den)) + " (" + std::to_string(frame_rate.num) + "/" + std::to_string(frame_rate.den) + ")\n";
settings += "Location=0,0,0,0\n"; // Whatever.
if (fprintf(d2v_file, "%s", settings.c_str()) < 0) {
error = "Failed to print d2v settings section: fprintf() failed.";
return false;
}
return true;
}
