CC: [email protected]
---
libavformat/oggdec.c | 68 ++++++++++++++++++++++++++++++++++++++++------------
1 file changed, 53 insertions(+), 15 deletions(-)
diff --git a/libavformat/oggdec.c b/libavformat/oggdec.c
index ae9da3a..8f81f9d 100644
--- a/libavformat/oggdec.c
+++ b/libavformat/oggdec.c
@@ -60,9 +60,13 @@ static const struct ogg_codec * const ogg_codecs[] = {
static int ogg_save(AVFormatContext *s)
{
struct ogg *ogg = s->priv_data;
+ int i, ret = 0;
struct ogg_state *ost =
av_malloc(sizeof(*ost) + (ogg->nstreams - 1) * sizeof(*ogg->streams));
- int i;
+
+ if (!ost)
+ return AVERROR(ENOMEM);
+
ost->pos = avio_tell(s->pb);
ost->curidx = ogg->curidx;
ost->next = ogg->state;
@@ -72,12 +76,25 @@ static int ogg_save(AVFormatContext *s)
for (i = 0; i < ogg->nstreams; i++) {
struct ogg_stream *os = ogg->streams + i;
os->buf = av_mallocz(os->bufsize + FF_INPUT_BUFFER_PADDING_SIZE);
+ if (!os->buf) {
+ int n;
+
+ for (n = 0; n < i; n++) {
+ struct ogg_stream *os = ogg->streams + n;
+ av_freep(os->buf);
+ }
+
+ av_freep(ost);
+ ret = AVERROR(ENOMEM);
+ break;
+ }
memcpy(os->buf, ost->streams[i].buf, os->bufpos);
}
- ogg->state = ost;
+ if (ost)
+ ogg->state = ost;
- return 0;
+ return ret;
}
static int ogg_restore(AVFormatContext *s, int discard)
@@ -173,10 +190,18 @@ static int ogg_new_stream(AVFormatContext *s, uint32_t
serial, int new_avstream)
os->header = -1;
os->start_granule = OGG_NOGRANULE_VALUE;
+ if (!os->buf) {
+ av_freep(os);
+ return AVERROR(ENOMEM);
+ }
+
if (new_avstream) {
st = avformat_new_stream(s, NULL);
- if (!st)
+ if (!st) {
+ av_freep(os->buf);
+ av_freep(os);
return AVERROR(ENOMEM);
+ }
st->id = idx;
avpriv_set_pts_info(st, 64, 1, 1000000);
@@ -191,6 +216,9 @@ static int ogg_new_buf(struct ogg *ogg, int idx)
uint8_t *nb = av_malloc(os->bufsize + FF_INPUT_BUFFER_PADDING_SIZE);
int size = os->bufpos - os->pstart;
+ if (!nb)
+ return AVERROR(ENOMEM);
+
if (os->buf) {
memcpy(nb, os->buf + os->pstart, size);
av_free(os->buf);
@@ -276,8 +304,11 @@ static int ogg_read_page(AVFormatContext *s, int *str)
os = ogg->streams + idx;
os->page_pos = avio_tell(bc) - 27;
- if (os->psize > 0)
- ogg_new_buf(ogg, idx);
+ if (os->psize > 0) {
+ ret = ogg_new_buf(ogg, idx);
+ if (ret < 0)
+ return ret;
+ }
ret = avio_read(bc, os->segments, nsegs);
if (ret < nsegs)
@@ -497,7 +528,7 @@ static int ogg_get_headers(AVFormatContext *s)
static int ogg_get_length(AVFormatContext *s)
{
struct ogg *ogg = s->priv_data;
- int i;
+ int i, ret = 0;
int64_t size, end;
if (!s->pb->seekable)
@@ -512,7 +543,10 @@ static int ogg_get_length(AVFormatContext *s)
return 0;
end = size > MAX_PAGE_SIZE ? size - MAX_PAGE_SIZE : 0;
- ogg_save(s);
+ ret = ogg_save(s);
+ if (ret < 0)
+ return ret;
+
avio_seek(s->pb, end, SEEK_SET);
while (!ogg_read_page(s, &i)) {
@@ -525,9 +559,9 @@ static int ogg_get_length(AVFormatContext *s)
}
}
- ogg_restore(s, 0);
+ ret = ogg_restore(s, 0);
- return 0;
+ return ret;
}
static int ogg_read_close(AVFormatContext *s)
@@ -554,20 +588,24 @@ static int ogg_read_header(AVFormatContext *s)
ogg->curidx = -1;
//linear headers seek from start
ret = ogg_get_headers(s);
- if (ret < 0) {
- ogg_read_close(s);
- return ret;
- }
+ if (ret < 0)
+ goto fail;
for (i = 0; i < ogg->nstreams; i++)
if (ogg->streams[i].header < 0)
ogg->streams[i].codec = NULL;
//linear granulepos seek from end
- ogg_get_length(s);
+ ret = ogg_get_length(s);
+ if (ret < 0)
+ goto fail;
//fill the extradata in the per codec callbacks
return 0;
+
+fail:
+ ogg_read_close(s);
+ return ret;
}
static int64_t ogg_calc_pts(AVFormatContext *s, int idx, int64_t *dts)
--
1.8.1.4
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