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Split the sdp_read_packet() function out of rtsp_read_packet(). 

This allows to avoid compiling RTSP code when not needed.

Originally committed as revision 20526 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Luca Abeni 2009-11-12 15:34:17 +00:00
parent 1ced9da357
commit 987131828c
1 changed files with 63 additions and 52 deletions
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115
libavformat/rtsp.c
View File

@ -43,6 +43,8 @@
//#define DEBUG
//#define DEBUG_RTP_TCP
static int tcp_read_packet(AVFormatContext *s, RTSPStream **prtsp_st,
uint8_t *buf, int buf_size);
static int rtsp_read_reply(AVFormatContext *s, RTSPMessageHeader *reply,
unsigned char **content_ptr,
int return_on_interleaved_data);
@ -609,6 +611,63 @@ static int udp_read_packet(AVFormatContext *s, RTSPStream **prtsp_st,
}
}
static int sdp_read_packet(AVFormatContext *s, AVPacket *pkt)
{
RTSPState *rt = s->priv_data;
int ret, len;
uint8_t buf[10 * RTP_MAX_PACKET_LENGTH];
RTSPStream *rtsp_st;
/* get next frames from the same RTP packet */
if (rt->cur_transport_priv) {
if (rt->transport == RTSP_TRANSPORT_RDT)
ret = ff_rdt_parse_packet(rt->cur_transport_priv, pkt, NULL, 0);
else
ret = rtp_parse_packet(rt->cur_transport_priv, pkt, NULL, 0);
if (ret == 0) {
rt->cur_transport_priv = NULL;
return 0;
} else if (ret == 1) {
return 0;
} else {
rt->cur_transport_priv = NULL;
}
}
/* read next RTP packet */
redo:
switch(rt->lower_transport) {
default:
#if CONFIG_RTSP_DEMUXER
case RTSP_LOWER_TRANSPORT_TCP:
len = tcp_read_packet(s, &rtsp_st, buf, sizeof(buf));
break;
#endif
case RTSP_LOWER_TRANSPORT_UDP:
case RTSP_LOWER_TRANSPORT_UDP_MULTICAST:
len = udp_read_packet(s, &rtsp_st, buf, sizeof(buf));
if (len >=0 && rtsp_st->transport_priv && rt->transport == RTSP_TRANSPORT_RTP)
rtp_check_and_send_back_rr(rtsp_st->transport_priv, len);
break;
}
if (len < 0)
return len;
if (len == 0)
return AVERROR_EOF;
if (rt->transport == RTSP_TRANSPORT_RDT)
ret = ff_rdt_parse_packet(rtsp_st->transport_priv, pkt, buf, len);
else
ret = rtp_parse_packet(rtsp_st->transport_priv, pkt, buf, len);
if (ret < 0)
goto redo;
if (ret == 1) {
/* more packets may follow, so we save the RTP context */
rt->cur_transport_priv = rtsp_st->transport_priv;
}
return ret;
}
/* close and free RTSP streams */
static void rtsp_close_streams(RTSPState *rt)
{
@ -1498,9 +1557,7 @@ static int rtsp_read_packet(AVFormatContext *s,
AVPacket *pkt)
{
RTSPState *rt = s->priv_data;
RTSPStream *rtsp_st;
int ret, len;
uint8_t buf[10 * RTP_MAX_PACKET_LENGTH];
int ret;
RTSPMessageHeader reply1, *reply = &reply1;
char cmd[1024];
@ -1564,49 +1621,9 @@ static int rtsp_read_packet(AVFormatContext *s,
}
}
/* get next frames from the same RTP packet */
if (rt->cur_transport_priv) {
if (rt->transport == RTSP_TRANSPORT_RDT)
ret = ff_rdt_parse_packet(rt->cur_transport_priv, pkt, NULL, 0);
else
ret = rtp_parse_packet(rt->cur_transport_priv, pkt, NULL, 0);
if (ret == 0) {
rt->cur_transport_priv = NULL;
return 0;
} else if (ret == 1) {
return 0;
} else {
rt->cur_transport_priv = NULL;
}
}
/* read next RTP packet */
redo:
switch(rt->lower_transport) {
default:
case RTSP_LOWER_TRANSPORT_TCP:
len = tcp_read_packet(s, &rtsp_st, buf, sizeof(buf));
break;
case RTSP_LOWER_TRANSPORT_UDP:
case RTSP_LOWER_TRANSPORT_UDP_MULTICAST:
len = udp_read_packet(s, &rtsp_st, buf, sizeof(buf));
if (len >=0 && rtsp_st->transport_priv && rt->transport == RTSP_TRANSPORT_RTP)
rtp_check_and_send_back_rr(rtsp_st->transport_priv, len);
break;
}
if (len < 0)
return len;
if (len == 0)
return AVERROR_EOF;
if (rt->transport == RTSP_TRANSPORT_RDT)
ret = ff_rdt_parse_packet(rtsp_st->transport_priv, pkt, buf, len);
else
ret = rtp_parse_packet(rtsp_st->transport_priv, pkt, buf, len);
if (ret < 0)
goto redo;
if (ret == 1) {
/* more packets may follow, so we save the RTP context */
rt->cur_transport_priv = rtsp_st->transport_priv;
ret = sdp_read_packet(s, pkt);
if (ret < 0) {
return ret;
}
/* send dummy request to keep TCP connection alive */
@ -1777,12 +1794,6 @@ static int sdp_read_header(AVFormatContext *s,
return err;
}
static int sdp_read_packet(AVFormatContext *s,
AVPacket *pkt)
{
return rtsp_read_packet(s, pkt);
}
static int sdp_read_close(AVFormatContext *s)
{
RTSPState *rt = s->priv_data;