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rtsp: Move message parsing to a separate function

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Make easier to handle the polling function before we implement
full threading support.
This commit is contained in:
Luca Barbato 2017-03-14 17:44:45 +01:00
parent bd805964f4
commit ca960161f0
1 changed files with 32 additions and 25 deletions
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57
libavformat/rtsp.c
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@ -1907,12 +1907,39 @@ redirect:
#endif /* CONFIG_RTSP_DEMUXER || CONFIG_RTSP_MUXER */
#if CONFIG_RTPDEC
static int parse_rtsp_message(AVFormatContext *s)
{
RTSPState *rt = s->priv_data;
int ret;
if (rt->rtsp_flags & RTSP_FLAG_LISTEN) {
if (rt->state == RTSP_STATE_STREAMING) {
if (!ff_rtsp_parse_streaming_commands(s))
return AVERROR_EOF;
else
av_log(s, AV_LOG_WARNING,
"Unable to answer to TEARDOWN\n");
} else
return 0;
} else {
RTSPMessageHeader reply;
ret = ff_rtsp_read_reply(s, &reply, NULL, 0, NULL);
if (ret < 0)
return ret;
/* XXX: parse message */
if (rt->state != RTSP_STATE_STREAMING)
return 0;
}
return 0;
}
static int udp_read_packet(AVFormatContext *s, RTSPStream **prtsp_st,
uint8_t *buf, int buf_size, int64_t wait_end)
{
RTSPState *rt = s->priv_data;
RTSPStream *rtsp_st;
int n, i, ret, tcp_fd, timeout_cnt = 0;
int n, i, ret, timeout_cnt = 0;
struct pollfd *p = rt->p;
int *fds = NULL, fdsnum, fdsidx;
@ -1922,11 +1949,8 @@ static int udp_read_packet(AVFormatContext *s, RTSPStream **prtsp_st,
return AVERROR(ENOMEM);
if (rt->rtsp_hd) {
tcp_fd = ffurl_get_file_handle(rt->rtsp_hd);
p[rt->max_p].fd = tcp_fd;
p[rt->max_p].fd = ffurl_get_file_handle(rt->rtsp_hd);
p[rt->max_p++].events = POLLIN;
} else {
tcp_fd = -1;
}
for (i = 0; i < rt->nb_rtsp_streams; i++) {
rtsp_st = rt->rtsp_streams[i];
@ -1957,7 +1981,7 @@ static int udp_read_packet(AVFormatContext *s, RTSPStream **prtsp_st,
return AVERROR(EAGAIN);
n = poll(p, rt->max_p, POLL_TIMEOUT_MS);
if (n > 0) {
int j = 1 - (tcp_fd == -1);
int j = rt->rtsp_hd ? 1 : 0;
timeout_cnt = 0;
for (i = 0; i < rt->nb_rtsp_streams; i++) {
rtsp_st = rt->rtsp_streams[i];
@ -1973,25 +1997,8 @@ static int udp_read_packet(AVFormatContext *s, RTSPStream **prtsp_st,
}
}
#if CONFIG_RTSP_DEMUXER
if (tcp_fd != -1 && p[0].revents & POLLIN) {
if (rt->rtsp_flags & RTSP_FLAG_LISTEN) {
if (rt->state == RTSP_STATE_STREAMING) {
if (!ff_rtsp_parse_streaming_commands(s))
return AVERROR_EOF;
else
av_log(s, AV_LOG_WARNING,
"Unable to answer to TEARDOWN\n");
} else
return 0;
} else {
RTSPMessageHeader reply;
ret = ff_rtsp_read_reply(s, &reply, NULL, 0, NULL);
if (ret < 0)
return ret;
/* XXX: parse message */
if (rt->state != RTSP_STATE_STREAMING)
return 0;
}
if (rt->rtsp_hd && p[0].revents & POLLIN) {
return parse_rtsp_message(s);
}
#endif
} else if (n == 0 && ++timeout_cnt >= MAX_TIMEOUTS) {