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Add is_keyframe param to ff_rdt_parse_header(). See ML discussion in

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"[PATCH] RDT/Realmedia patches #2" thread.

Originally committed as revision 15833 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Ronald S. Bultje 2008-11-15 20:41:59 +00:00
parent 92765276fb
commit 114732f4c7
3 changed files with 11 additions and 7 deletions
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12
libavformat/rdt.c
View File

@ -173,7 +173,8 @@ rdt_load_mdpr (PayloadContext *rdt, AVStream *st, int rule_nr)
int
ff_rdt_parse_header(const uint8_t *buf, int len,
int *set_id, int *seq_no, int *stream_id, uint32_t *timestamp)
int *set_id, int *seq_no, int *stream_id,
int *is_keyframe, uint32_t *timestamp)
{
int consumed = 10;
@ -238,7 +239,8 @@ ff_rdt_parse_header(const uint8_t *buf, int len,
if (set_id) *set_id = (buf[0]>>1) & 0x1f;
if (seq_no) *seq_no = AV_RB16(buf+1);
if (timestamp) *timestamp = AV_RB32(buf+4);
if (stream_id) *stream_id = buf[3] & 0x3f;
if (stream_id) *stream_id = (buf[3]>>1) & 0x1f;
if (is_keyframe) *is_keyframe = !(buf[3] & 0x1);
return consumed;
}
@ -287,7 +289,7 @@ int
ff_rdt_parse_packet(RDTDemuxContext *s, AVPacket *pkt,
const uint8_t *buf, int len)
{
int seq_no, flags = 0, stream_id, set_id;
int seq_no, flags = 0, stream_id, set_id, is_keyframe;
uint32_t timestamp;
int rv= 0;
@ -304,10 +306,10 @@ ff_rdt_parse_packet(RDTDemuxContext *s, AVPacket *pkt,
if (len < 12)
return -1;
rv = ff_rdt_parse_header(buf, len, &set_id, &seq_no, &stream_id, &timestamp);
rv = ff_rdt_parse_header(buf, len, &set_id, &seq_no, &stream_id, &is_keyframe, &timestamp);
if (rv < 0)
return rv;
if (!(stream_id & 1) && (set_id != s->prev_set_id || timestamp != s->prev_timestamp)) {
if (is_keyframe && (set_id != s->prev_set_id || timestamp != s->prev_timestamp)) {
flags |= PKT_FLAG_KEY;
s->prev_set_id = set_id;
s->prev_timestamp = timestamp;

4
libavformat/rdt.h
View File

@ -75,11 +75,13 @@ void ff_rdt_subscribe_rule2(RDTDemuxContext *s, char *cmd, int size,
* @param set_id will be set to the set ID this packet belongs to
* @param seq_no will be set to the sequence number this packet belongs to
* @param stream_id will be set to the stream ID this packet belongs to
* @param is_keyframe will be whether this packet belongs to a keyframe
* @param timestamp will be set to the timestamp of the packet
* @return the amount of bytes consumed, or <0 on error
*/
int ff_rdt_parse_header(const uint8_t *buf, int len,
int *set_id, int *seq_no, int *stream_id, uint32_t *timestamp);
int *set_id, int *seq_no, int *stream_id,
int *is_keyframe, uint32_t *timestamp);
/**
* Parse RDT-style packet data (header + media data).

2
libavformat/rtsp.c
View File

@ -1281,7 +1281,7 @@ static int tcp_read_packet(AVFormatContext *s, RTSPStream **prtsp_st,
if (ret != len)
return -1;
if (rt->transport == RTSP_TRANSPORT_RDT &&
ff_rdt_parse_header(buf, len, &id, NULL, NULL, NULL) < 0)
ff_rdt_parse_header(buf, len, &id, NULL, NULL, NULL, NULL) < 0)
return -1;
/* find the matching stream */