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nut: Fix unchecked allocations 

Signed-off-by: Derek Buitenhuis <derek.buitenhuis@gmail.com>
This commit is contained in:
Derek Buitenhuis 2013-10-22 16:11:11 +01:00
parent 692b930904
commit 55ae13e3de
4 changed files with 16 additions and 4 deletions
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10
libavformat/nut.c
View File

@ -227,11 +227,17 @@ int ff_nut_sp_pts_cmp(const Syncpoint *a, const Syncpoint *b)
return ((a->ts - b->ts) >> 32) - ((b->ts - a->ts) >> 32);
}
void ff_nut_add_sp(NUTContext *nut, int64_t pos, int64_t back_ptr, int64_t ts)
int ff_nut_add_sp(NUTContext *nut, int64_t pos, int64_t back_ptr, int64_t ts)
{
Syncpoint *sp = av_mallocz(sizeof(Syncpoint));
struct AVTreeNode *node = av_tree_node_alloc();
if (!sp || !node) {
av_freep(&sp);
av_freep(&node);
return AVERROR(ENOMEM);
}
nut->sp_count++;
sp->pos = pos;
@ -242,6 +248,8 @@ void ff_nut_add_sp(NUTContext *nut, int64_t pos, int64_t back_ptr, int64_t ts)
av_free(sp);
av_free(node);
}
return 0;
}
static int enu_free(void *opaque, void *elem)

2
libavformat/nut.h
View File

@ -122,7 +122,7 @@ void ff_nut_reset_ts(NUTContext *nut, AVRational time_base, int64_t val);
int64_t ff_lsb2full(StreamContext *stream, int64_t lsb);
int ff_nut_sp_pos_cmp(const Syncpoint *a, const Syncpoint *b);
int ff_nut_sp_pts_cmp(const Syncpoint *a, const Syncpoint *b);
void ff_nut_add_sp(NUTContext *nut, int64_t pos, int64_t back_ptr, int64_t ts);
int ff_nut_add_sp(NUTContext *nut, int64_t pos, int64_t back_ptr, int64_t ts);
void ff_nut_free_sp(NUTContext *nut);
extern const Dispositions ff_nut_dispositions[];

5
libavformat/nutdec.c
View File

@ -558,6 +558,7 @@ static int decode_syncpoint(NUTContext *nut, int64_t *ts, int64_t *back_ptr)
AVIOContext *bc = s->pb;
int64_t end;
uint64_t tmp;
int ret;
nut->last_syncpoint_pos = avio_tell(bc) - 8;
@ -579,7 +580,9 @@ static int decode_syncpoint(NUTContext *nut, int64_t *ts, int64_t *back_ptr)
*ts = tmp / nut->time_base_count *
av_q2d(nut->time_base[tmp % nut->time_base_count]) * AV_TIME_BASE;
ff_nut_add_sp(nut, nut->last_syncpoint_pos, *back_ptr, *ts);
if ((ret = ff_nut_add_sp(nut, nut->last_syncpoint_pos, *back_ptr, *ts)) < 0)
return ret;
return 0;
}

3
libavformat/nutenc.c
View File

@ -858,7 +858,8 @@ static int nut_write_packet(AVFormatContext *s, AVPacket *pkt)
ff_put_v(dyn_bc, sp ? (nut->last_syncpoint_pos - sp->pos) >> 4 : 0);
put_packet(nut, bc, dyn_bc, 1, SYNCPOINT_STARTCODE);
ff_nut_add_sp(nut, nut->last_syncpoint_pos, 0 /*unused*/, pkt->dts);
if ((ret = ff_nut_add_sp(nut, nut->last_syncpoint_pos, 0 /*unused*/, pkt->dts)) < 0)
return ret;
if ((1ll<<60) % nut->sp_count == 0)
for (i=0; i<s->nb_streams; i++) {