* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
+#include "libavutil/channel_layout.h"
#include "libavutil/intreadwrite.h"
#include "swf.h"
tag = get_swf_tag(pb, &len);
if (tag < 0)
return AVERROR(EIO);
+ if (len < 0) {
+ av_log(s, AV_LOG_ERROR, "invalid tag length: %d\n", len);
+ return AVERROR_INVALIDDATA;
+ }
if (tag == TAG_VIDEOSTREAM) {
int ch_id = avio_rl16(pb);
len -= 2;
if (!ast)
return -1;
ast->id = -1; /* -1 to avoid clash with video stream ch_id */
- ast->codec->channels = 1 + (v&1);
+ if (v & 1) {
+ ast->codec->channels = 2;
+ ast->codec->channel_layout = AV_CH_LAYOUT_STEREO;
+ } else {
+ ast->codec->channels = 1;
+ ast->codec->channel_layout = AV_CH_LAYOUT_MONO;
+ }
ast->codec->codec_type = AVMEDIA_TYPE_AUDIO;
ast->codec->codec_id = ff_codec_get_id(swf_audio_codec_tags, (v>>4) & 15);
ast->need_parsing = AVSTREAM_PARSE_FULL;
st = s->streams[i];
if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO && st->id == ch_id) {
frame = avio_rl16(pb);
- if ((res = av_get_packet(pb, pkt, len-2)) < 0)
+ len -= 2;
+ if (len <= 0)
+ goto skip;
+ if ((res = av_get_packet(pb, pkt, len)) < 0)
return res;
pkt->pos = pos;
pkt->pts = frame;
for (i = 0; i < s->nb_streams; i++) {
st = s->streams[i];
if (st->codec->codec_type == AVMEDIA_TYPE_AUDIO && st->id == -1) {
- if (st->codec->codec_id == AV_CODEC_ID_MP3) {
- avio_skip(pb, 4);
- if ((res = av_get_packet(pb, pkt, len-4)) < 0)
- return res;
- } else { // ADPCM, PCM
- if ((res = av_get_packet(pb, pkt, len)) < 0)
- return res;
- }
- pkt->pos = pos;
- pkt->stream_index = st->index;
- return pkt->size;
+ if (st->codec->codec_id == AV_CODEC_ID_MP3) {
+ avio_skip(pb, 4);
+ len -= 4;
+ if (len <= 0)
+ goto skip;
+ if ((res = av_get_packet(pb, pkt, len)) < 0)
+ return res;
+ } else { // ADPCM, PCM
+ if (len <= 0)
+ goto skip;
+ if ((res = av_get_packet(pb, pkt, len)) < 0)
+ return res;
+ }
+ pkt->pos = pos;
+ pkt->stream_index = st->index;
+ return pkt->size;
}
}
} else if (tag == TAG_JPEG2) {
st = vst;
}
avio_rl16(pb); /* BITMAP_ID */
- if ((res = av_new_packet(pkt, len-2)) < 0)
+ len -= 2;
+ if (len < 4)
+ goto skip;
+ if ((res = av_new_packet(pkt, len)) < 0)
return res;
avio_read(pb, pkt->data, 4);
if (AV_RB32(pkt->data) == 0xffd8ffd9 ||
return pkt->size;
}
skip:
+ len = FFMAX(0, len);
avio_skip(pb, len);
}
}