/* * RTSP definitions * Copyright (c) 2002 Fabrice Bellard. * * This file is part of FFmpeg. * * FFmpeg is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2.1 of the License, or (at your option) any later version. * * FFmpeg is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with FFmpeg; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */#ifndef FFMPEG_RTSP_H#define FFMPEG_RTSP_H#include <stdint.h>#include "avformat.h"#include "rtspcodes.h"enum RTSPProtocol {    RTSP_PROTOCOL_RTP_UDP = 0,    RTSP_PROTOCOL_RTP_TCP = 1,    RTSP_PROTOCOL_RTP_UDP_MULTICAST = 2,    /**     * This is not part of public API and shouldn't be used outside of ffmpeg.     */    RTSP_PROTOCOL_RTP_LAST};#define RTSP_DEFAULT_PORT   554#define RTSP_MAX_TRANSPORTS 8#define RTSP_TCP_MAX_PACKET_SIZE 1472#define RTSP_DEFAULT_NB_AUDIO_CHANNELS 2#define RTSP_DEFAULT_AUDIO_SAMPLERATE 44100#define RTSP_RTP_PORT_MIN 5000#define RTSP_RTP_PORT_MAX 10000typedef struct RTSPTransportField {    int interleaved_min, interleaved_max;  /**< interleave ids, if TCP transport */    int port_min, port_max; /**< RTP ports */    int client_port_min, client_port_max; /**< RTP ports */    int server_port_min, server_port_max; /**< RTP ports */    int ttl; /**< ttl value */    uint32_t destination; /**< destination IP address */    enum RTSPProtocol protocol;} RTSPTransportField;typedef struct RTSPHeader {    int content_length;    enum RTSPStatusCode status_code; /**< response code from server */    int nb_transports;    /** in AV_TIME_BASE unit, AV_NOPTS_VALUE if not used */    int64_t range_start, range_end;    RTSPTransportField transports[RTSP_MAX_TRANSPORTS];    int seq; /**< sequence number */    char session_id[512];} RTSPHeader;/** the callback can be used to extend the connection setup/teardown step */enum RTSPCallbackAction {    RTSP_ACTION_SERVER_SETUP,    RTSP_ACTION_SERVER_TEARDOWN,    RTSP_ACTION_CLIENT_SETUP,    RTSP_ACTION_CLIENT_TEARDOWN,};typedef struct RTSPActionServerSetup {    uint32_t ipaddr;    char transport_option[512];} RTSPActionServerSetup;typedef int FFRTSPCallback(enum RTSPCallbackAction action,                           const char *session_id,                           char *buf, int buf_size,                           void *arg);int rtsp_init(void);void rtsp_parse_line(RTSPHeader *reply, const char *buf);#if LIBAVFORMAT_VERSION_INT < (53 << 16)extern int rtsp_default_protocols;#endifextern int rtsp_rtp_port_min;extern int rtsp_rtp_port_max;int rtsp_pause(AVFormatContext *s);int rtsp_resume(AVFormatContext *s);#endif /* FFMPEG_RTSP_H */