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Add support for TCP as lower transport in the RTSP muxer 

Originally committed as revision 22634 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Martin Storsjö 2010-03-22 15:07:05 +00:00
parent 5d7bc46c2d
commit b7dc88fc68
2 changed files with 62 additions and 4 deletions
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22
libavformat/rtsp.c
View File

@ -584,7 +584,13 @@ void ff_rtsp_close_streams(AVFormatContext *s)
if (s->oformat) {
AVFormatContext *rtpctx = rtsp_st->transport_priv;
av_write_trailer(rtpctx);
if (rt->lower_transport == RTSP_LOWER_TRANSPORT_TCP) {
uint8_t *ptr;
url_close_dyn_buf(rtpctx->pb, &ptr);
av_free(ptr);
} else {
url_fclose(rtpctx->pb);
}
av_metadata_free(&rtpctx->streams[0]->metadata);
av_metadata_free(&rtpctx->metadata);
av_free(rtpctx->streams[0]);
@ -644,11 +650,20 @@ static void *rtsp_rtp_mux_open(AVFormatContext *s, AVStream *st,
av_free(rtpctx->streams[0]->codec);
rtpctx->streams[0]->codec = st->codec;
if (handle) {
url_fdopen(&rtpctx->pb, handle);
} else
url_open_dyn_packet_buf(&rtpctx->pb, RTSP_TCP_MAX_PACKET_SIZE);
ret = av_write_header(rtpctx);
if (ret) {
if (handle) {
url_fclose(rtpctx->pb);
} else {
uint8_t *ptr;
url_close_dyn_buf(rtpctx->pb, &ptr);
av_free(ptr);
}
av_free(rtpctx->streams[0]);
av_free(rtpctx);
return NULL;
@ -1464,11 +1479,12 @@ redirect:
lower_transport_mask = (1 << RTSP_LOWER_TRANSPORT_NB) - 1;
if (s->oformat) {
/* Only UDP output is supported at the moment. */
lower_transport_mask &= 1 << RTSP_LOWER_TRANSPORT_UDP;
/* Only UDP or TCP - UDP multicast isn't supported. */
lower_transport_mask &= (1 << RTSP_LOWER_TRANSPORT_UDP) |
(1 << RTSP_LOWER_TRANSPORT_TCP);
if (!lower_transport_mask) {
av_log(s, AV_LOG_ERROR, "Unsupported lower transport method, "
"only UDP is supported for output.\n");
"only UDP and TCP are supported for output.\n");
err = AVERROR(EINVAL);
goto fail;
}

44
libavformat/rtspenc.c
View File

@ -27,6 +27,7 @@
#endif
#include "network.h"
#include "rtsp.h"
#include <libavutil/intreadwrite.h>
static int rtsp_write_record(AVFormatContext *s)
{
@ -63,6 +64,40 @@ static int rtsp_write_header(AVFormatContext *s)
return 0;
}
static int tcp_write_packet(AVFormatContext *s, RTSPStream *rtsp_st)
{
RTSPState *rt = s->priv_data;
AVFormatContext *rtpctx = rtsp_st->transport_priv;
uint8_t *buf, *ptr;
int size;
uint8_t interleave_header[4];
size = url_close_dyn_buf(rtpctx->pb, &buf);
ptr = buf;
while (size > 4) {
uint32_t packet_len = AV_RB32(ptr);
int id;
ptr += 4;
size -= 4;
if (packet_len > size || packet_len < 2)
break;
if (ptr[1] >= 200 && ptr[1] <= 204)
id = rtsp_st->interleaved_max; /* RTCP */
else
id = rtsp_st->interleaved_min; /* RTP */
interleave_header[0] = '$';
interleave_header[1] = id;
AV_WB16(interleave_header + 2, packet_len);
url_write(rt->rtsp_hd, interleave_header, 4);
url_write(rt->rtsp_hd, ptr, packet_len);
ptr += packet_len;
size -= packet_len;
}
av_free(buf);
url_open_dyn_packet_buf(&rtpctx->pb, RTSP_TCP_MAX_PACKET_SIZE);
return 0;
}
static int rtsp_write_packet(AVFormatContext *s, AVPacket *pkt)
{
RTSPState *rt = s->priv_data;
@ -111,7 +146,14 @@ static int rtsp_write_packet(AVFormatContext *s, AVPacket *pkt)
* the internal stream_index = 0 becomes visible to the muxer user. */
local_pkt = *pkt;
local_pkt.stream_index = 0;
return av_write_frame(rtpctx, &local_pkt);
ret = av_write_frame(rtpctx, &local_pkt);
/* av_write_frame does all the RTP packetization. If using TCP as
* transport, rtpctx->pb is only a dyn_packet_buf that queues up the
* packets, so we need to send them out on the TCP connection separately.
*/
if (!ret && rt->lower_transport == RTSP_LOWER_TRANSPORT_TCP)
ret = tcp_write_packet(s, rtsp_st);
return ret;
}
static int rtsp_write_close(AVFormatContext *s)