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h264parse: do not try to read from a non existent VUI

Browse source 
https://bugzilla.gnome.org/show_bug.cgi?id=658800
This commit is contained in:
Vincent Penquerc'h 2011-09-12 11:17:20 +01:00 committed by Sebastian Dröge
parent b8f9c3b39d
commit ac5121eb01
1 changed files with 18 additions and 12 deletions
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30
gst-libs/gst/codecparsers/gsth264parser.c
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@ -1468,19 +1468,25 @@ gst_h264_parse_sps (GstH264NalUnit * nalu, GstH264SPS * sps,
sps->width = width;
sps->height = height;
/* derive framerate */
/* FIXME verify / also handle other cases */
GST_LOG ("Framerate: %u %u %u %u", parse_vui_params,
vui->fixed_frame_rate_flag, sps->frame_mbs_only_flag,
vui->pic_struct_present_flag);
if (vui) {
/* derive framerate */
/* FIXME verify / also handle other cases */
GST_LOG ("Framerate: %u %u %u %u", parse_vui_params,
vui->fixed_frame_rate_flag, sps->frame_mbs_only_flag,
vui->pic_struct_present_flag);
if (parse_vui_params && vui->fixed_frame_rate_flag &&
sps->frame_mbs_only_flag && !vui->pic_struct_present_flag) {
sps->fps_num = vui->time_scale;
sps->fps_den = vui->num_units_in_tick;
/* picture is a frame = 2 fields */
sps->fps_den *= 2;
GST_LOG ("framerate %d/%d", sps->fps_num, sps->fps_den);
if (parse_vui_params && vui->fixed_frame_rate_flag &&
sps->frame_mbs_only_flag && !vui->pic_struct_present_flag) {
sps->fps_num = vui->time_scale;
sps->fps_den = vui->num_units_in_tick;
/* picture is a frame = 2 fields */
sps->fps_den *= 2;
GST_LOG ("framerate %d/%d", sps->fps_num, sps->fps_den);
}
} else {
sps->fps_num = 0;
sps->fps_den = 1;
GST_LOG ("No VUI, unknown framerate");
}
sps->valid = TRUE;