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replic_size==0 fix, needed so that G.726 asf file, so ffmpeg can at least decode the video without segfaulting

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Originally committed as revision 2706 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Michael Niedermayer 2004-01-14 21:27:59 +00:00
parent 0c904df2b6
commit 1305a9d55e
1 changed files with 10 additions and 9 deletions
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19
libavformat/asf.c
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@ -1141,23 +1141,24 @@ static int asf_read_packet(AVFormatContext *s, AVPacket *pkt)
DO_2BITS(asf->packet_property, asf->packet_replic_size, 0);
//printf("key:%d stream:%d seq:%d offset:%d replic_size:%d\n", asf->packet_key_frame, asf->stream_index, asf->packet_seq, //asf->packet_frag_offset, asf->packet_replic_size);
if (asf->packet_replic_size > 1) {
assert(asf->packet_replic_size >= 8);
// it should be always at least 8 bytes - FIXME validate
asf->packet_obj_size = get_le32(pb);
asf->packet_frag_timestamp = get_le32(pb); // timestamp
if (asf->packet_replic_size > 8)
url_fskip(pb, asf->packet_replic_size - 8);
rsize += asf->packet_replic_size; // FIXME - check validity
} else {
} else if (asf->packet_replic_size==1){
// multipacket - frag_offset is begining timestamp
asf->packet_time_start = asf->packet_frag_offset;
asf->packet_frag_offset = 0;
asf->packet_frag_timestamp = asf->packet_timestamp;
if (asf->packet_replic_size == 1) {
asf->packet_time_delta = get_byte(pb);
rsize++;
}
}
asf->packet_time_delta = get_byte(pb);
rsize++;
}else{
assert(asf->packet_replic_size==0);
}
if (asf->packet_flags & 0x01) {
DO_2BITS(asf->packet_segsizetype >> 6, asf->packet_frag_size, 0); // 0 is illegal
#undef DO_2BITS
@ -1232,10 +1233,10 @@ static int asf_read_packet(AVFormatContext *s, AVPacket *pkt)
asf_st->seq = asf->packet_seq;
asf_st->pkt.pts = asf->packet_frag_timestamp - asf->hdr.preroll;
asf_st->pkt.stream_index = asf->stream_index;
asf_st->packet_pos= asf->packet_pos;
//printf("new packet: stream:%d key:%d packet_key:%d audio:%d\n",
asf_st->packet_pos= asf->packet_pos;
//printf("new packet: stream:%d key:%d packet_key:%d audio:%d size:%d\n",
//asf->stream_index, asf->packet_key_frame, asf_st->pkt.flags & PKT_FLAG_KEY,
//s->streams[asf->stream_index]->codec.codec_type == CODEC_TYPE_AUDIO);
//s->streams[asf->stream_index]->codec.codec_type == CODEC_TYPE_AUDIO, asf->packet_obj_size);
if (s->streams[asf->stream_index]->codec.codec_type == CODEC_TYPE_AUDIO)
asf->packet_key_frame = 1;
if (asf->packet_key_frame)