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asfdec: do not assume every AVStream has a corresponding ASFStream 

This won't be true for ID3 attached picture.

Also stop allocating now useless dummy ASFStreams for ASF native
attached pictures.
This commit is contained in:
Anton Khirnov 2013-02-08 13:54:36 +01:00
parent f5fac6f777
commit 1ef0e8a6bf
1 changed files with 6 additions and 5 deletions
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11
libavformat/asfdec.c
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@ -22,6 +22,7 @@
//#define DEBUG
#include "libavutil/attributes.h"
#include "libavutil/avassert.h"
#include "libavutil/avstring.h"
#include "libavutil/bswap.h"
#include "libavutil/common.h"
@ -193,7 +194,6 @@ static int asf_read_picture(AVFormatContext *s, int len)
enum AVCodecID id = AV_CODEC_ID_NONE;
char mimetype[64];
uint8_t *desc = NULL;
ASFStream *ast = NULL;
AVStream *st = NULL;
int ret, type, picsize, desc_len;
@ -248,12 +248,10 @@ static int asf_read_picture(AVFormatContext *s, int len)
goto fail;
st = avformat_new_stream(s, NULL);
ast = av_mallocz(sizeof(*ast));
if (!st || !ast) {
if (!st) {
ret = AVERROR(ENOMEM);
goto fail;
}
st->priv_data = ast;
st->disposition |= AV_DISPOSITION_ATTACHED_PIC;
st->codec->codec_type = AVMEDIA_TYPE_VIDEO;
st->codec->codec_id = id;
@ -271,7 +269,6 @@ static int asf_read_picture(AVFormatContext *s, int len)
return 0;
fail:
av_freep(&ast);
av_freep(&desc);
av_free_packet(&pkt);
return ret;
@ -1107,6 +1104,7 @@ static int ff_asf_parse_packet(AVFormatContext *s, AVIOContext *pb, AVPacket *pk
asf->asf_st = s->streams[asf->stream_index]->priv_data;
}
asf_st = asf->asf_st;
av_assert0(asf_st);
if (asf->packet_replic_size == 1) {
// frag_offset is here used as the beginning timestamp
@ -1316,6 +1314,8 @@ static void asf_reset_header(AVFormatContext *s)
for (i = 0; i < s->nb_streams; i++) {
asf_st = s->streams[i]->priv_data;
if (!asf_st)
continue;
av_free_packet(&asf_st->pkt);
asf_st->frag_offset = 0;
asf_st->seq = 0;
@ -1364,6 +1364,7 @@ static int64_t asf_read_pts(AVFormatContext *s, int stream_index,
i = pkt->stream_index;
asf_st = s->streams[i]->priv_data;
av_assert0(asf_st);
// assert((asf_st->packet_pos - s->data_offset) % s->packet_size == 0);
pos = asf_st->packet_pos;