libavformat/rtsp.h

   1 /*
   2  * RTSP definitions
   3  * Copyright (c) 2002 Fabrice Bellard.
   4  *
   5  * This file is part of FFmpeg.
   6  *
   7  * FFmpeg is free software; you can redistribute it and/or
   8  * modify it under the terms of the GNU Lesser General Public
   9  * License as published by the Free Software Foundation; either
  10  * version 2.1 of the License, or (at your option) any later version.
  11  *
  12  * FFmpeg is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  15  * Lesser General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU Lesser General Public
  18  * License along with FFmpeg; if not, write to the Free Software
  19  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  20  */
  21 #ifndef FFMPEG_RTSP_H
  22 #define FFMPEG_RTSP_H
  23
  24 #include <stdint.h>
  25 #include "avformat.h"
  26 #include "rtspcodes.h"
  27
  28 enum RTSPLowerTransport {
  29     RTSP_LOWER_TRANSPORT_UDP = 0,
  30     RTSP_LOWER_TRANSPORT_TCP = 1,
  31     RTSP_LOWER_TRANSPORT_UDP_MULTICAST = 2,
  32     /**
  33      * This is not part of public API and shouldn't be used outside of ffmpeg.
  34      */
  35     RTSP_LOWER_TRANSPORT_LAST
  36 };
  37
  38 #define RTSP_DEFAULT_PORT   554
  39 #define RTSP_MAX_TRANSPORTS 8
  40 #define RTSP_TCP_MAX_PACKET_SIZE 1472
  41 #define RTSP_DEFAULT_NB_AUDIO_CHANNELS 2
  42 #define RTSP_DEFAULT_AUDIO_SAMPLERATE 44100
  43 #define RTSP_RTP_PORT_MIN 5000
  44 #define RTSP_RTP_PORT_MAX 10000
  45
  46 typedef struct RTSPTransportField {
  47     int interleaved_min, interleaved_max;  /**< interleave ids, if TCP transport */
  48     int port_min, port_max; /**< RTP ports */
  49     int client_port_min, client_port_max; /**< RTP ports */
  50     int server_port_min, server_port_max; /**< RTP ports */
  51     int ttl; /**< ttl value */
  52     uint32_t destination; /**< destination IP address */
  53     int transport;
  54     enum RTSPLowerTransport lower_transport;
  55 } RTSPTransportField;
  56
  57 typedef struct RTSPHeader {
  58     int content_length;
  59     enum RTSPStatusCode status_code; /**< response code from server */
  60     int nb_transports;
  61     /** in AV_TIME_BASE unit, AV_NOPTS_VALUE if not used */
  62     int64_t range_start, range_end;
  63     RTSPTransportField transports[RTSP_MAX_TRANSPORTS];
  64     int seq; /**< sequence number */
  65     char session_id[512];
  66     char real_challenge[64]; /**< the RealChallenge1 field from the server */
  67 } RTSPHeader;
  68
  69 /** the callback can be used to extend the connection setup/teardown step */
  70 enum RTSPCallbackAction {
  71     RTSP_ACTION_SERVER_SETUP,
  72     RTSP_ACTION_SERVER_TEARDOWN,
  73     RTSP_ACTION_CLIENT_SETUP,
  74     RTSP_ACTION_CLIENT_TEARDOWN,
  75 };
  76
  77 typedef struct RTSPActionServerSetup {
  78     uint32_t ipaddr;
  79     char transport_option[512];
  80 } RTSPActionServerSetup;
  81
  82 typedef int FFRTSPCallback(enum RTSPCallbackAction action,
  83                            const char *session_id,
  84                            char *buf, int buf_size,
  85                            void *arg);
  86
  87 int rtsp_init(void);
  88 void rtsp_parse_line(RTSPHeader *reply, const char *buf);
  89
  90 #if LIBAVFORMAT_VERSION_INT < (53 << 16)
  91 extern int rtsp_default_protocols;
  92 #endif
  93 extern int rtsp_rtp_port_min;
  94 extern int rtsp_rtp_port_max;
  95
  96 int rtsp_pause(AVFormatContext *s);
  97 int rtsp_resume(AVFormatContext *s);
  98
  99 #endif /* FFMPEG_RTSP_H */