static int rtsp_read_play(AVFormatContext *s) { RTSPState *rt = s->priv_data; RTSPMessageHeader reply1, *reply = &reply1; int i; char cmd[1024]; av_log(s, AV_LOG_DEBUG, "hello state=%d\n", rt->state); if (!(rt->server_type == RTSP_SERVER_REAL && rt->need_subscription)) { if (rt->state == RTSP_STATE_PAUSED) { cmd[0] = 0; } else { snprintf(cmd, sizeof(cmd), "Range: npt=%0.3f-\r\n", (double)rt->seek_timestamp / AV_TIME_BASE); } ff_rtsp_send_cmd(s, "PLAY", rt->control_uri, cmd, reply, NULL); if (reply->status_code != RTSP_STATUS_OK) { return -1; } if (reply->range_start != AV_NOPTS_VALUE && rt->transport == RTSP_TRANSPORT_RTP) { for (i = 0; i < rt->nb_rtsp_streams; i++) { RTSPStream *rtsp_st = rt->rtsp_streams[i]; RTPDemuxContext *rtpctx = rtsp_st->transport_priv; AVStream *st = NULL; if (rtsp_st->stream_index >= 0) st = s->streams[rtsp_st->stream_index]; rtpctx->last_rtcp_ntp_time = AV_NOPTS_VALUE; rtpctx->first_rtcp_ntp_time = AV_NOPTS_VALUE; if (st) rtpctx->range_start_offset = av_rescale_q(reply->range_start, AV_TIME_BASE_Q, st->time_base); } } } rt->state = RTSP_STATE_STREAMING; return 0; }