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Code Issues Releases Activity

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

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This commit is contained in:
Tomas Härdin 2011-12-21 12:00:04 +01:00
parent 0cd21ddaed
commit cc1dda851b
1 changed files with 2 additions and 2 deletions
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4
libavformat/mxfdec.c
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@ -1745,7 +1745,7 @@ static void mxf_packet_timestamps(MXFContext *mxf, AVPacket *pkt)
return; return;
/* find mxf->current_edit_unit so that the next edit unit starts ahead of pkt->pos */ /* 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) if (mxf_edit_unit_absolute_offset(mxf, t, mxf->current_edit_unit + 1, NULL, &next_ofs, 0) < 0)
break; break;
@ -1763,7 +1763,7 @@ static void mxf_packet_timestamps(MXFContext *mxf, AVPacket *pkt)
mxf->current_edit_unit++; 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; return;
pkt->dts = mxf->current_edit_unit + t->first_dts; pkt->dts = mxf->current_edit_unit + t->first_dts;