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FLV seeking patch by Nazo. lovesyao at aol com.

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Originally committed as revision 6285 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Nazo 2006-09-17 09:39:49 +00:00 committed by Benjamin Larsson
parent e66477afbe
commit aeb20f7f9d
1 changed files with 18 additions and 1 deletions
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19
libavformat/flvdec.c
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@ -55,15 +55,18 @@ static int flv_read_header(AVFormatContext *s,
url_fseek(&s->pb, offset, SEEK_SET); url_fseek(&s->pb, offset, SEEK_SET);
s->start_time = 0;
return 0; return 0;
} }
static int flv_read_packet(AVFormatContext *s, AVPacket *pkt) static int flv_read_packet(AVFormatContext *s, AVPacket *pkt)
{ {
int ret, i, type, size, pts, flags, is_audio, next; int ret, i, type, size, pts, flags, is_audio, next, pos;
AVStream *st = NULL; AVStream *st = NULL;
for(;;){ for(;;){
pos = url_ftell(&s->pb);
url_fskip(&s->pb, 4); /* size of previous packet */ url_fskip(&s->pb, 4); /* size of previous packet */
type = get_byte(&s->pb); type = get_byte(&s->pb);
size = get_be24(&s->pb); size = get_be24(&s->pb);
@ -154,6 +157,8 @@ static int flv_read_packet(AVFormatContext *s, AVPacket *pkt)
url_fseek(&s->pb, next, SEEK_SET); url_fseek(&s->pb, next, SEEK_SET);
continue; continue;
} }
if ((flags >> 4)==1)
av_add_index_entry(st, pos, pts, size, 0, AVINDEX_KEYFRAME);
break; break;
} }
@ -216,6 +221,17 @@ static int flv_read_close(AVFormatContext *s)
return 0; return 0;
} }
static int flv_read_seek(AVFormatContext *s, int stream_index, int64_t timestamp, int flags)
{
AVStream *st = s->streams[stream_index];
int index = av_index_search_timestamp(st, timestamp, flags);
if (index < 0)
return -1;
url_fseek(&s->pb, st->index_entries[index].pos, SEEK_SET);
return 0;
}
AVInputFormat flv_demuxer = { AVInputFormat flv_demuxer = {
"flv", "flv",
"flv format", "flv format",
@ -224,6 +240,7 @@ AVInputFormat flv_demuxer = {
flv_read_header, flv_read_header,
flv_read_packet, flv_read_packet,
flv_read_close, flv_read_close,
flv_read_seek,
.extensions = "flv", .extensions = "flv",
.value = CODEC_ID_FLV1, .value = CODEC_ID_FLV1,
}; };