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Allow to set the maximum number of frames per RTP packet (and add support for 

this in the AAC packetizer)

Originally committed as revision 10647 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Luca Abeni 2007-10-02 14:48:08 +00:00
parent 0d0447eae0
commit e0d21bfe83
3 changed files with 17 additions and 1 deletions
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15
libavformat/rtp.c
View File

@ -747,6 +747,21 @@ static int rtp_write_header(AVFormatContext *s1)
return AVERROR(EIO);
s->max_payload_size = max_packet_size - 12;
s->max_frames_per_packet = 0;
if (s1->max_delay) {
if (st->codec->codec_type == CODEC_TYPE_AUDIO) {
if (st->codec->frame_size == 0) {
av_log(s1, AV_LOG_ERROR, "Cannot respect max delay: frame size = 0\n");
} else {
s->max_frames_per_packet = av_rescale_rnd(s1->max_delay, st->codec->sample_rate, AV_TIME_BASE * st->codec->frame_size, AV_ROUND_DOWN);
}
}
if (st->codec->codec_type == CODEC_TYPE_VIDEO) {
/* FIXME: We should round down here... */
s->max_frames_per_packet = av_rescale_q(s1->max_delay, AV_TIME_BASE_Q, st->codec->time_base);
}
}
av_set_pts_info(st, 32, 1, 90000);
switch(st->codec->codec_id) {
case CODEC_ID_MP2:

2
libavformat/rtp_aac.c
View File

@ -22,7 +22,7 @@
#include "rtp_aac.h"
#include "rtp_internal.h"
#define MAX_FRAMES_PER_PACKET 5
#define MAX_FRAMES_PER_PACKET (s->max_frames_per_packet ? s->max_frames_per_packet : 5)
#define MAX_AU_HEADERS_SIZE (2 + 2 * MAX_FRAMES_PER_PACKET)
void ff_rtp_send_aac(AVFormatContext *s1, const uint8_t *buff, int size)

1
libavformat/rtp_internal.h
View File

@ -105,6 +105,7 @@ struct RTPDemuxContext {
/* dynamic payload stuff */
DynamicPayloadPacketHandlerProc parse_packet; ///< This is also copied from the dynamic protocol handler structure
void *dynamic_protocol_context; ///< This is a copy from the values setup from the sdp parsing, in rtsp.c don't free me.
int max_frames_per_packet;
};
extern RTPDynamicProtocolHandler *RTPFirstDynamicPayloadHandler;