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matroskamux: correctly handle negative relative timestamps

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... rather than scaling these as unsigned.

Fixes https://bugzilla.gnome.org/show_bug.cgi?id=712744

Based on patch by Krzysztof Kotlenga <pocek@users.sf.net>
This commit is contained in:
Mark Nauwelaerts 2013-11-23 12:15:40 +01:00
parent 83f8ee1d41
commit 643e6fdc36
1 changed files with 5 additions and 2 deletions
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7
gst/matroska/matroska-mux.c
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@ -3381,12 +3381,15 @@ gst_matroska_mux_write_data (GstMatroskaMux * mux, GstMatroskaPad * collect_pad,
if (relative_timestamp64 >= 0) {
/* round the timestamp */
relative_timestamp64 += gst_util_uint64_scale (mux->time_scale, 1, 2);
relative_timestamp = gst_util_uint64_scale (relative_timestamp64, 1,
mux->time_scale);
} else {
/* round the timestamp */
relative_timestamp64 -= gst_util_uint64_scale (mux->time_scale, 1, 2);
relative_timestamp =
-((gint16) gst_util_uint64_scale (-relative_timestamp64, 1,
mux->time_scale));
}
relative_timestamp = gst_util_uint64_scale (relative_timestamp64, 1,
mux->time_scale);
if (is_video_invisible)
flags |= 0x08;