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mxfdec: Don't crash in mxf_packet_timestamps() if current_edit_unit overflows

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Signed-off-by: Diego Biurrun <diego@biurrun.de>
This commit is contained in:
Tomas Härdin 2012-01-26 13:21:41 +01:00 committed by Diego Biurrun
parent d00257e96a
commit 9123950be0
1 changed files with 2 additions and 2 deletions
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4
libavformat/mxfdec.c
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@ -1798,7 +1798,7 @@ static void mxf_packet_timestamps(MXFContext *mxf, AVPacket *pkt)
return;
/* find mxf->current_edit_unit so that the next edit unit starts ahead of pkt->pos */
for (;;) {
while (mxf->current_edit_unit >= 0) {
if (mxf_edit_unit_absolute_offset(mxf, t, mxf->current_edit_unit + 1, NULL, &next_ofs, 0) < 0)
break;
@ -1817,7 +1817,7 @@ static void mxf_packet_timestamps(MXFContext *mxf, AVPacket *pkt)
mxf->current_edit_unit++;
}
if (mxf->current_edit_unit >= t->nb_ptses)
if (mxf->current_edit_unit < 0 || mxf->current_edit_unit >= t->nb_ptses)
return;
pkt->dts = mxf->current_edit_unit + t->first_dts;