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Create AVFormatContext objects as private transport for output RTSP sessions

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Originally committed as revision 21964 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Martin Storsjö 2010-02-22 15:46:56 +00:00
parent 1d6065ad08
commit fd450a5177
2 changed files with 57 additions and 3 deletions
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58
libavformat/rtsp.c
View File

@ -582,7 +582,13 @@ static void rtsp_close_streams(AVFormatContext *s)
rtsp_st = rt->rtsp_streams[i];
if (rtsp_st) {
if (rtsp_st->transport_priv) {
if (rt->transport == RTSP_TRANSPORT_RDT)
if (s->oformat) {
AVFormatContext *rtpctx = rtsp_st->transport_priv;
av_write_trailer(rtpctx);
url_fclose(rtpctx->pb);
av_free(rtpctx->streams[0]);
av_free(rtpctx);
} else if (rt->transport == RTSP_TRANSPORT_RDT)
ff_rdt_parse_close(rtsp_st->transport_priv);
else
rtp_parse_close(rtsp_st->transport_priv);
@ -602,6 +608,50 @@ static void rtsp_close_streams(AVFormatContext *s)
av_freep(&rt->auth_b64);
}
static void *rtsp_rtp_mux_open(AVFormatContext *s, AVStream *st, URLContext *handle) {
AVFormatContext *rtpctx;
int ret;
AVOutputFormat *rtp_format = av_guess_format("rtp", NULL, NULL);
if (!rtp_format)
return NULL;
/* Allocate an AVFormatContext for each output stream */
rtpctx = avformat_alloc_context();
if (!rtpctx)
return NULL;
rtpctx->oformat = rtp_format;
if (!av_new_stream(rtpctx, 0)) {
av_free(rtpctx);
return NULL;
}
/* Copy the max delay setting; the rtp muxer reads this. */
rtpctx->max_delay = s->max_delay;
/* Copy other stream parameters. */
rtpctx->streams[0]->sample_aspect_ratio = st->sample_aspect_ratio;
/* Remove the local codec, link to the original codec
* context instead, to give the rtp muxer access to
* codec parameters. */
av_free(rtpctx->streams[0]->codec);
rtpctx->streams[0]->codec = st->codec;
url_fdopen(&rtpctx->pb, handle);
ret = av_write_header(rtpctx);
if (ret) {
url_fclose(rtpctx->pb);
av_free(rtpctx->streams[0]);
av_free(rtpctx);
return NULL;
}
/* Copy the RTP AVStream timebase back to the original AVStream */
st->time_base = rtpctx->streams[0]->time_base;
return rtpctx;
}
static int rtsp_open_transport_ctx(AVFormatContext *s, RTSPStream *rtsp_st)
{
RTSPState *rt = s->priv_data;
@ -613,7 +663,11 @@ static int rtsp_open_transport_ctx(AVFormatContext *s, RTSPStream *rtsp_st)
if (!st)
s->ctx_flags |= AVFMTCTX_NOHEADER;
if (rt->transport == RTSP_TRANSPORT_RDT)
if (s->oformat) {
rtsp_st->transport_priv = rtsp_rtp_mux_open(s, st, rtsp_st->rtp_handle);
/* Ownage of rtp_handle is passed to the rtp mux context */
rtsp_st->rtp_handle = NULL;
} else if (rt->transport == RTSP_TRANSPORT_RDT)
rtsp_st->transport_priv = ff_rdt_parse_open(s, st->index,
rtsp_st->dynamic_protocol_context,
rtsp_st->dynamic_handler);

2
libavformat/rtsp.h
View File

@ -281,7 +281,7 @@ typedef struct RTSPState {
*/
typedef struct RTSPStream {
URLContext *rtp_handle; /**< RTP stream handle (if UDP) */
void *transport_priv; /**< RTP/RDT parse context */
void *transport_priv; /**< RTP/RDT parse context if input, RTP AVFormatContext if output */
/** corresponding stream index, if any. -1 if none (MPEG2TS case) */
int stream_index;