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mpeg2dec: make the aspect ratio calculation more accurate.

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Utilize the libmpeg2 api: mpeg2_guess_aspect() to guess the
aspect-ratio if we don't have a valid upstream PAR.

https://bugzilla.gnome.org/show_bug.cgi?id=685103
This commit is contained in:
Sreerenj Balachandran 2013-06-04 16:12:27 +03:00 committed by Sebastian Dröge
parent 04472f6c33
commit 866f60cce6
1 changed files with 10 additions and 2 deletions
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12
ext/mpeg2dec/gstmpeg2dec.c
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@ -625,10 +625,18 @@ handle_sequence (GstMpeg2dec * mpeg2dec, const mpeg2_info_t * info)
if (GST_VIDEO_INFO_PAR_N (vinfo) == 1 &&
GST_VIDEO_INFO_PAR_D (vinfo) == 1 &&
sequence->pixel_width != 0 && sequence->pixel_height != 0) {
GST_DEBUG_OBJECT (mpeg2dec, "Setting PAR %d x %d",
sequence->pixel_width, sequence->pixel_height);
#if MPEG2_RELEASE >= MPEG2_VERSION(0,5,0)
guint pixel_width, pixel_height;
if (mpeg2_guess_aspect (sequence, &pixel_width, &pixel_height)) {
vinfo->par_n = pixel_width;
vinfo->par_d = pixel_height;
}
#else
vinfo->par_n = sequence->pixel_width;
vinfo->par_d = sequence->pixel_height;
#endif
GST_DEBUG_OBJECT (mpeg2dec, "Setting PAR %d x %d",
vinfo->par_n, vinfo->par_d);
}
vinfo->fps_n = 27000000;
vinfo->fps_d = sequence->frame_period;