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Partial rewrite stream probe code. 

Fix issue2312.
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
This commit is contained in:
Michael Niedermayer 2011-03-01 20:17:33 +01:00
parent 6e77feb201
commit 15957b197a
1 changed files with 14 additions and 11 deletions
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25
libavformat/utils.c
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@ -689,11 +689,7 @@ int av_read_packet(AVFormatContext *s, AVPacket *pkt)
if (pktl) {
*pkt = pktl->pkt;
if(s->streams[pkt->stream_index]->codec->codec_id != CODEC_ID_PROBE ||
!s->streams[pkt->stream_index]->probe_packets ||
s->raw_packet_buffer_remaining_size < pkt->size){
AVProbeData *pd = &s->streams[pkt->stream_index]->probe_data;
av_freep(&pd->buf);
pd->buf_size = 0;
!s->streams[pkt->stream_index]->probe_packets){
s->raw_packet_buffer = pktl->next;
s->raw_packet_buffer_remaining_size += pkt->size;
av_free(pktl);
@ -731,9 +727,10 @@ int av_read_packet(AVFormatContext *s, AVPacket *pkt)
add_to_pktbuf(&s->raw_packet_buffer, pkt, &s->raw_packet_buffer_end);
s->raw_packet_buffer_remaining_size -= pkt->size;
if(st->codec->codec_id == CODEC_ID_PROBE){
if(st->codec->codec_id == CODEC_ID_PROBE && st->probe_packets){
AVProbeData *pd = &st->probe_data;
av_log(s, AV_LOG_DEBUG, "probing stream %d\n", st->index);
int end;
av_log(s, AV_LOG_DEBUG, "probing stream %d pp:%d\n", st->index, st->probe_packets);
--st->probe_packets;
pd->buf = av_realloc(pd->buf, pd->buf_size+pkt->size+AVPROBE_PADDING_SIZE);
@ -741,13 +738,19 @@ int av_read_packet(AVFormatContext *s, AVPacket *pkt)
pd->buf_size += pkt->size;
memset(pd->buf+pd->buf_size, 0, AVPROBE_PADDING_SIZE);
if(av_log2(pd->buf_size) != av_log2(pd->buf_size - pkt->size)){
//FIXME we dont reduce score to 0 for the case of running out of buffer space in bytes
set_codec_from_probe_data(s, st, pd, st->probe_packets > 0 ? AVPROBE_SCORE_MAX/4 : 0);
if(st->codec->codec_id != CODEC_ID_PROBE){
end= s->raw_packet_buffer_remaining_size <= 0
|| st->probe_packets<=0;
if(end || av_log2(pd->buf_size) != av_log2(pd->buf_size - pkt->size)){
set_codec_from_probe_data(s, st, pd, end ? 0 : AVPROBE_SCORE_MAX/4);
if(st->codec->codec_id != CODEC_ID_PROBE || end){
pd->buf_size=0;
av_freep(&pd->buf);
st->probe_packets= 0;
if(st->codec->codec_id != CODEC_ID_PROBE){
av_log(s, AV_LOG_DEBUG, "probed stream %d\n", st->index);
}else
av_log(s, AV_LOG_WARNING, "probed stream %d failed\n", st->index);
}
}
}