mirror of
https://git.ffmpeg.org/ffmpeg.git
synced 2024-12-29 10:52:20 +00:00
Move some some functions around, so that splitting the SDP code out of
rtsp_read_packet() is simpler. Originally committed as revision 20525 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Luca Abeni
parent
07580347b9
commit
1ced9da357
@ -43,19 +43,14 @@
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//#define DEBUG
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//#define DEBUG_RTP_TCP
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static int rtsp_read_play(AVFormatContext *s);
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static int rtsp_read_reply(AVFormatContext *s, RTSPMessageHeader *reply,
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unsigned char **content_ptr,
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int return_on_interleaved_data);
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#if LIBAVFORMAT_VERSION_INT < (53 << 16)
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int rtsp_default_protocols = (1 << RTSP_LOWER_TRANSPORT_UDP);
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#endif
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static int rtsp_probe(AVProbeData *p)
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{
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if (av_strstart(p->filename, "rtsp:", NULL))
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return AVPROBE_SCORE_MAX;
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return 0;
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}
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#define SPACE_CHARS " \t\r\n"
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/* we use memchr() instead of strchr() here because strchr() will return
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* the terminating '\0' of SPACE_CHARS instead of NULL if c is '\0'. */
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@ -554,6 +549,136 @@ static int sdp_parse(AVFormatContext *s, const char *content)
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return 0;
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}
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static int udp_read_packet(AVFormatContext *s, RTSPStream **prtsp_st,
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uint8_t *buf, int buf_size)
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{
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RTSPState *rt = s->priv_data;
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RTSPStream *rtsp_st;
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fd_set rfds;
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int fd, fd_max, n, i, ret, tcp_fd;
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struct timeval tv;
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for(;;) {
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if (url_interrupt_cb())
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return AVERROR(EINTR);
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FD_ZERO(&rfds);
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if (rt->rtsp_hd) {
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tcp_fd = fd_max = url_get_file_handle(rt->rtsp_hd);
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FD_SET(tcp_fd, &rfds);
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} else {
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fd_max = 0;
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tcp_fd = -1;
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}
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for(i = 0; i < rt->nb_rtsp_streams; i++) {
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rtsp_st = rt->rtsp_streams[i];
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if (rtsp_st->rtp_handle) {
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/* currently, we cannot probe RTCP handle because of
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* blocking restrictions */
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fd = url_get_file_handle(rtsp_st->rtp_handle);
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if (fd > fd_max)
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fd_max = fd;
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FD_SET(fd, &rfds);
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}
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}
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tv.tv_sec = 0;
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tv.tv_usec = 100 * 1000;
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n = select(fd_max + 1, &rfds, NULL, NULL, &tv);
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if (n > 0) {
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for(i = 0; i < rt->nb_rtsp_streams; i++) {
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rtsp_st = rt->rtsp_streams[i];
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if (rtsp_st->rtp_handle) {
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fd = url_get_file_handle(rtsp_st->rtp_handle);
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if (FD_ISSET(fd, &rfds)) {
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ret = url_read(rtsp_st->rtp_handle, buf, buf_size);
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if (ret > 0) {
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*prtsp_st = rtsp_st;
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return ret;
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}
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}
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}
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}
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if (FD_ISSET(tcp_fd, &rfds)) {
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RTSPMessageHeader reply;
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rtsp_read_reply(s, &reply, NULL, 0);
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/* XXX: parse message */
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if (rt->state != RTSP_STATE_PLAYING)
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return 0;
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}
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}
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}
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}
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/* close and free RTSP streams */
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static void rtsp_close_streams(RTSPState *rt)
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{
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int i;
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RTSPStream *rtsp_st;
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for(i=0;i<rt->nb_rtsp_streams;i++) {
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rtsp_st = rt->rtsp_streams[i];
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if (rtsp_st) {
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if (rtsp_st->transport_priv) {
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if (rt->transport == RTSP_TRANSPORT_RDT)
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ff_rdt_parse_close(rtsp_st->transport_priv);
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else
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rtp_parse_close(rtsp_st->transport_priv);
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}
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if (rtsp_st->rtp_handle)
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url_close(rtsp_st->rtp_handle);
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if (rtsp_st->dynamic_handler && rtsp_st->dynamic_protocol_context)
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rtsp_st->dynamic_handler->close(rtsp_st->dynamic_protocol_context);
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}
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}
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av_free(rt->rtsp_streams);
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if (rt->asf_ctx) {
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av_close_input_stream (rt->asf_ctx);
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rt->asf_ctx = NULL;
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}
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av_freep(&rt->auth_b64);
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}
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static int
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rtsp_open_transport_ctx(AVFormatContext *s, RTSPStream *rtsp_st)
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{
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RTSPState *rt = s->priv_data;
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AVStream *st = NULL;
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/* open the RTP context */
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if (rtsp_st->stream_index >= 0)
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st = s->streams[rtsp_st->stream_index];
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if (!st)
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s->ctx_flags |= AVFMTCTX_NOHEADER;
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if (rt->transport == RTSP_TRANSPORT_RDT)
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rtsp_st->transport_priv = ff_rdt_parse_open(s, st->index,
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rtsp_st->dynamic_protocol_context,
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rtsp_st->dynamic_handler);
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else
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rtsp_st->transport_priv = rtp_parse_open(s, st, rtsp_st->rtp_handle,
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rtsp_st->sdp_payload_type,
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&rtsp_st->rtp_payload_data);
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if (!rtsp_st->transport_priv) {
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return AVERROR(ENOMEM);
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} else if (rt->transport != RTSP_TRANSPORT_RDT) {
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if(rtsp_st->dynamic_handler) {
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rtp_parse_set_dynamic_protocol(rtsp_st->transport_priv,
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rtsp_st->dynamic_protocol_context,
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rtsp_st->dynamic_handler);
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}
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}
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return 0;
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}
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static int rtsp_probe(AVProbeData *p)
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{
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if (av_strstart(p->filename, "rtsp:", NULL))
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return AVPROBE_SCORE_MAX;
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return 0;
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}
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static void rtsp_parse_range(int *min_ptr, int *max_ptr, const char **pp)
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{
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const char *p;
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@ -880,70 +1005,6 @@ static void rtsp_send_cmd (AVFormatContext *s,
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rtsp_read_reply(s, reply, content_ptr, 0);
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}
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/* close and free RTSP streams */
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static void rtsp_close_streams(RTSPState *rt)
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{
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int i;
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RTSPStream *rtsp_st;
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for(i=0;i<rt->nb_rtsp_streams;i++) {
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rtsp_st = rt->rtsp_streams[i];
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if (rtsp_st) {
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if (rtsp_st->transport_priv) {
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if (rt->transport == RTSP_TRANSPORT_RDT)
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ff_rdt_parse_close(rtsp_st->transport_priv);
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else
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rtp_parse_close(rtsp_st->transport_priv);
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}
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if (rtsp_st->rtp_handle)
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url_close(rtsp_st->rtp_handle);
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if (rtsp_st->dynamic_handler && rtsp_st->dynamic_protocol_context)
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rtsp_st->dynamic_handler->close(rtsp_st->dynamic_protocol_context);
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}
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}
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av_free(rt->rtsp_streams);
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if (rt->asf_ctx) {
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av_close_input_stream (rt->asf_ctx);
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rt->asf_ctx = NULL;
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}
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av_freep(&rt->auth_b64);
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}
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static int
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rtsp_open_transport_ctx(AVFormatContext *s, RTSPStream *rtsp_st)
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{
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RTSPState *rt = s->priv_data;
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AVStream *st = NULL;
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/* open the RTP context */
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if (rtsp_st->stream_index >= 0)
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st = s->streams[rtsp_st->stream_index];
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if (!st)
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s->ctx_flags |= AVFMTCTX_NOHEADER;
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if (rt->transport == RTSP_TRANSPORT_RDT)
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rtsp_st->transport_priv = ff_rdt_parse_open(s, st->index,
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rtsp_st->dynamic_protocol_context,
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rtsp_st->dynamic_handler);
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else
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rtsp_st->transport_priv = rtp_parse_open(s, st, rtsp_st->rtp_handle,
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rtsp_st->sdp_payload_type,
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&rtsp_st->rtp_payload_data);
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if (!rtsp_st->transport_priv) {
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return AVERROR(ENOMEM);
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} else if (rt->transport != RTSP_TRANSPORT_RDT) {
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if(rtsp_st->dynamic_handler) {
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rtp_parse_set_dynamic_protocol(rtsp_st->transport_priv,
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rtsp_st->dynamic_protocol_context,
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rtsp_st->dynamic_handler);
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}
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}
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return 0;
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}
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/**
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* @returns 0 on success, <0 on error, 1 if protocol is unavailable.
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*/
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@ -1171,6 +1232,35 @@ fail:
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return err;
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}
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static int rtsp_read_play(AVFormatContext *s)
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{
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RTSPState *rt = s->priv_data;
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RTSPMessageHeader reply1, *reply = &reply1;
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char cmd[1024];
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av_log(s, AV_LOG_DEBUG, "hello state=%d\n", rt->state);
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if (!(rt->server_type == RTSP_SERVER_REAL && rt->need_subscription)) {
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if (rt->state == RTSP_STATE_PAUSED) {
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snprintf(cmd, sizeof(cmd),
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"PLAY %s RTSP/1.0\r\n",
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s->filename);
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} else {
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snprintf(cmd, sizeof(cmd),
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"PLAY %s RTSP/1.0\r\n"
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"Range: npt=%0.3f-\r\n",
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s->filename,
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(double)rt->seek_timestamp / AV_TIME_BASE);
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}
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rtsp_send_cmd(s, cmd, reply, NULL);
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if (reply->status_code != RTSP_STATUS_OK) {
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return -1;
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}
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}
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rt->state = RTSP_STATE_PLAYING;
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return 0;
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}
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static int rtsp_read_header(AVFormatContext *s,
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AVFormatParameters *ap)
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{
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@ -1404,66 +1494,6 @@ static int tcp_read_packet(AVFormatContext *s, RTSPStream **prtsp_st,
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return len;
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}
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static int udp_read_packet(AVFormatContext *s, RTSPStream **prtsp_st,
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uint8_t *buf, int buf_size)
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{
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RTSPState *rt = s->priv_data;
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RTSPStream *rtsp_st;
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fd_set rfds;
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int fd, fd_max, n, i, ret, tcp_fd;
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struct timeval tv;
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for(;;) {
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if (url_interrupt_cb())
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return AVERROR(EINTR);
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FD_ZERO(&rfds);
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if (rt->rtsp_hd) {
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tcp_fd = fd_max = url_get_file_handle(rt->rtsp_hd);
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FD_SET(tcp_fd, &rfds);
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} else {
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fd_max = 0;
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tcp_fd = -1;
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}
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for(i = 0; i < rt->nb_rtsp_streams; i++) {
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rtsp_st = rt->rtsp_streams[i];
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if (rtsp_st->rtp_handle) {
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/* currently, we cannot probe RTCP handle because of
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* blocking restrictions */
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fd = url_get_file_handle(rtsp_st->rtp_handle);
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if (fd > fd_max)
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fd_max = fd;
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FD_SET(fd, &rfds);
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}
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}
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tv.tv_sec = 0;
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tv.tv_usec = 100 * 1000;
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n = select(fd_max + 1, &rfds, NULL, NULL, &tv);
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if (n > 0) {
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for(i = 0; i < rt->nb_rtsp_streams; i++) {
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rtsp_st = rt->rtsp_streams[i];
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if (rtsp_st->rtp_handle) {
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fd = url_get_file_handle(rtsp_st->rtp_handle);
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if (FD_ISSET(fd, &rfds)) {
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ret = url_read(rtsp_st->rtp_handle, buf, buf_size);
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if (ret > 0) {
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*prtsp_st = rtsp_st;
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return ret;
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}
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}
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}
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}
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if (FD_ISSET(tcp_fd, &rfds)) {
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RTSPMessageHeader reply;
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rtsp_read_reply(s, &reply, NULL, 0);
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/* XXX: parse message */
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if (rt->state != RTSP_STATE_PLAYING)
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return 0;
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}
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}
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}
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}
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static int rtsp_read_packet(AVFormatContext *s,
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AVPacket *pkt)
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{
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@ -1597,35 +1627,6 @@ static int rtsp_read_packet(AVFormatContext *s,
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return 0;
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}
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static int rtsp_read_play(AVFormatContext *s)
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{
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RTSPState *rt = s->priv_data;
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RTSPMessageHeader reply1, *reply = &reply1;
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char cmd[1024];
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av_log(s, AV_LOG_DEBUG, "hello state=%d\n", rt->state);
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if (!(rt->server_type == RTSP_SERVER_REAL && rt->need_subscription)) {
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if (rt->state == RTSP_STATE_PAUSED) {
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snprintf(cmd, sizeof(cmd),
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"PLAY %s RTSP/1.0\r\n",
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s->filename);
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} else {
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snprintf(cmd, sizeof(cmd),
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"PLAY %s RTSP/1.0\r\n"
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"Range: npt=%0.3f-\r\n",
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s->filename,
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(double)rt->seek_timestamp / AV_TIME_BASE);
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}
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rtsp_send_cmd(s, cmd, reply, NULL);
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if (reply->status_code != RTSP_STATUS_OK) {
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return -1;
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}
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}
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rt->state = RTSP_STATE_PLAYING;
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return 0;
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}
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/* pause the stream */
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static int rtsp_read_pause(AVFormatContext *s)
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{
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