Commit ddce56ef authored by Michael Niedermayer's avatar Michael Niedermayer
Browse files

Make packet interleaving in the muxer not scan through the whole

buffer when simply appending at the end works.
Much faster if one stream ends prematurely.
Fixes issue1379.

Originally committed as revision 19870 to svn://svn.ffmpeg.org/ffmpeg/trunk
parent 42831b46
......@@ -450,6 +450,12 @@ typedef struct AVStream {
*/
#define MAX_PROBE_PACKETS 100
int probe_packets;
/**
* Number of packets in packet_buffer for this stream when muxing.
* used internally, NOT PART OF PUBLIC API, dont read or write from outside of libav*
*/
int num_in_packet_buffer;
} AVStream;
#define AV_PROGRAM_RUNNING 1
......
......@@ -2657,14 +2657,25 @@ void ff_interleave_add_packet(AVFormatContext *s, AVPacket *pkt,
pkt->destruct= NULL; // do not free original but only the copy
av_dup_packet(&this_pktl->pkt); // duplicate the packet if it uses non-alloced memory
if(!s->packet_buffer_end || compare(s, &s->packet_buffer_end->pkt, pkt)){
next_point = &s->packet_buffer;
while(*next_point){
if(compare(s, &(*next_point)->pkt, pkt))
break;
next_point= &(*next_point)->next;
}
}else{
next_point = &(s->packet_buffer_end->next);
assert(!*next_point);
}
this_pktl->next= *next_point;
if(!*next_point)
s->packet_buffer_end= this_pktl;
*next_point= this_pktl;
s->streams[pkt->stream_index]->num_in_packet_buffer++;
}
int ff_interleave_compare_dts(AVFormatContext *s, AVPacket *next, AVPacket *pkt)
......@@ -2683,27 +2694,24 @@ int ff_interleave_compare_dts(AVFormatContext *s, AVPacket *next, AVPacket *pkt)
int av_interleave_packet_per_dts(AVFormatContext *s, AVPacket *out, AVPacket *pkt, int flush){
AVPacketList *pktl;
int stream_count=0;
int streams[MAX_STREAMS];
int i;
if(pkt){
ff_interleave_add_packet(s, pkt, ff_interleave_compare_dts);
}
memset(streams, 0, sizeof(streams));
pktl= s->packet_buffer;
while(pktl){
//av_log(s, AV_LOG_DEBUG, "show st:%d dts:%"PRId64"\n", pktl->pkt.stream_index, pktl->pkt.dts);
if(streams[ pktl->pkt.stream_index ] == 0)
stream_count++;
streams[ pktl->pkt.stream_index ]++;
pktl= pktl->next;
}
for(i=0; i < s->nb_streams; i++)
stream_count+= !!s->streams[i]->num_in_packet_buffer;
if(stream_count && (s->nb_streams == stream_count || flush)){
pktl= s->packet_buffer;
*out= pktl->pkt;
s->packet_buffer= pktl->next;
if(!s->packet_buffer)
s->packet_buffer_end= NULL;
s->streams[out->stream_index]->num_in_packet_buffer--;
av_freep(&pktl);
return 1;
}else{
......
Markdown is supported
0% or .
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment