#ifndef _RTSP_H_ #define _RTSP_H_ #include "dlist.h" #include "osdep_api.h" #include "avcodec.h" #define RTSP_DEBUG 0 #if RTSP_DEBUG #define RTSP_PRINTF(fmt, args...) printf("\n\r%s: " fmt, __FUNCTION__, ## args) #define RTSP_ERROR(fmt, args...) printf("\n\r%s: " fmt, __FUNCTION__, ## args) #else #define RTSP_PRINTF(fmt, args...) #define RTSP_ERROR(fmt, args...) printf("\n\r%s: " fmt, __FUNCTION__, ## args) #endif /*******************************************************general***************************************************************************/ struct stream_context { struct list_head payload_entry; _Mutex entry_lock; _Sema sema; void *protoCtx; // tranport layer protocol info.(eg.RTSP/HTTP) int isProcess; int allowStream; int pt; //payload type struct codec_info codec; void *priv; // pointer to private data }; /************************************************************** start of rtsp *************************************************************/ /*rtsp command list*/ #define CMD_OPTIONS 1 #define CMD_DESCRIBE 2 #define CMD_SETUP 3 #define CMD_TEARDOWN 4 #define CMD_PLAY 5 #define CMD_PAUSE 6 /*rtsp cast mode list*/ #define UNICAST_UDP_MODE 1 #define UNICAST_TCP_MODE 2 #define MULTICAST_MODE 3 #define CRLF "\r\n" #define BOUNDARY "amebaimagetest" #define RTSP_RESPONSE_SIZE 512 //max size for request/response buffer #define SERVER_PORT_RANGE_MIN 55608 #define SERVER_PORT_RANGE_MAX 55625 #define PORT_RANGE_MIN 50020 #define PORT_RANGE_MAX 50036 #if (SERVER_PORT_RANGE_MIN >= SERVER_PORT_RANGE_MAX) || (PORT_RANGE_MIN >= PORT_RANGE_MAX) #error "port range invalid" #endif #if ((SERVER_PORT_RANGE_MIN%2) != 0) || ((PORT_RANGE_MIN%2) != 0) #error "minimal port value should be even" #endif #define DEF_RTSP_PORT 554 #define DEF_HTTP_PORT 5008 /************************************************************** end of rtsp *************************************************************/ /************************************************************** start of rtp **************************************************************/ #define DEF_RTP_PORT 27750 #define RTP_BIG_ENDIAN 0 #define RTP_HDR_SZ 12 /*rtp payload type mapping and standard rtp payload type table*/ #define RTP_PT_PCMU 0 #define RTP_PT_GSM 3 #define RTP_PT_G723 4 #define RTP_PT_DVI4_R8000 5 #define RTP_PT_DVI4_R16000 6 #define RTP_PT_LPC 7 #define RTP_PT_PCMA 8 #define RTP_PT_G722 9 #define RTP_PT_L16_C2 10 #define RTP_PT_L16_C1 11 #define RTP_PT_QCELP 12 #define RTP_PT_CN 13 #define RTP_PT_MPA 14 #define RTP_PT_G728 15 #define RTP_PT_DVI4_R11025 16 #define RTP_PT_DVI4_R22050 17 #define RTP_PT_G719 18 #define RTP_PT_CELB 25 #define RTP_PT_JPEG 26 #define RTP_PT_NV 28 #define RTP_PT_H261 31 #define RTP_PT_MPV 32 #define RTP_PT_MP2T 33 #define RTP_PT_H263 34 #define RTP_PT_RTCP_BASE 72 #define RTP_PT_DYN_BASE 96 #undef RTP_PT_UNKNOWN #define RTP_PT_UNKNOWN -1 #include "section_config.h" SDRAM_DATA_SECTION static const struct { int pt; //payload type const char enc_name[6]; int clock_rate; int audio_channels; } rtp_payload_types[] = { //{0, "PCMU", 8000, 1}, //{3, "GSM", 8000, 1}, //{4, "G723", 8000, 1}, //{5, "DVI4", 8000, 1}, //{6, "DVI4", 16000, 1}, //{7, "LPC", 8000, 1}, //{8, "PCMA", 8000, 1}, //{9, "G722", 8000, 1}, //{10, "L16", 44100, 2}, //{11, "L16", 44100, 1}, //{12, "QCELP", 8000, 1}, //{13, "CN", 8000, 1}, //{14, "MPA", -1, -1}, //{15, "G728", 8000, 1}, //{16, "DVI4", 11025, 1}, //{17, "DVI4", 22050, 1}, //{18, "G729", 8000, 1}, //{25, "CelB", 90000, -1}, {26, "JPEG", 90000, -1}, //{28, "nv", 90000, -1}, //{31, "H261", 90000, -1}, //{32, "MPV", 90000, -1}, //{33, "MP2T", 90000, -1}, //{34, "H263", 90000, -1}, {-1, "", -1, -1} }; #define RTP_STD_PT_SIZE /*25*/ 2 //length of rtp_payload_types /************************************************************** end of rtp **************************************************************/ /************************************************************** start of rtcp *************************************************************/ #define RTP_SEQ_MOD (1<<16) #define RTP_MAX_SDES 255 /* maximum text length for SDES */ typedef enum { RTCP_SR = 200, RTCP_RR = 201, RTCP_SDES = 202, RTCP_BYE = 203, RTCP_APP = 204 } rtcp_type_t; typedef enum { RTCP_SDES_END = 0, RTCP_SDES_CNAME = 1, RTCP_SDES_NAME = 2, RTCP_SDES_EMAIL = 3, RTCP_SDES_PHONE = 4, RTCP_SDES_LOC = 5, RTCP_SDES_TOOL = 6, RTCP_SDES_NOTE = 7, RTCP_SDES_PRIV = 8 } rtcp_sdes_type_t; /************************************************************** end of rtcp *************************************************************/ /************************************************************** start of rtsp *************************************************************/ typedef enum _rtsp_state rtsp_state; enum _rtsp_state { RTSP_INIT = 0, RTSP_READY = 1, RTSP_PLAYING = 2, }; struct rtsp_session { int id; int version; int start_time; int end_time; unsigned char *user; unsigned char *name; }; struct rtsp_transport { int isRtp; //transport protocol int isTcp; //lower transport protocol int castMode; //unicast UDP(1) or unicast TCP(2) or multicast(3) int port_min; int port_max; int clientport_min; int clientport_max; int serverport_min; int serverport_max; int ttl; //multicast time to live //to be added if necessary }; /*sturcture to hold connect info*/ struct connect_context { int socket_id; u16 port; unsigned char *server_ip; unsigned char *remote_ip; }; struct rtsp_context { rtsp_state state; //state for rtp streaming int rtsp_cmd; //store request method type int Cseq; struct rtsp_transport transport; struct rtsp_session session; u8 *response; //enough to hold response int content_len; struct connect_context connect_ctx; //contain rtsp server info. void *stream_ctx; //stream context it process _Sema start_rtp_sema; //sema to start rtp processing int is_rtp_start; //to be added if necessary }; /************************************************************** end of rtsp *************************************************************/ /************************************************************** start of rtp **************************************************************/ /* * RTP data header from RFC1889 */ /* * * * The RTP header has the following format: * * 0 1 2 3 * 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ * |V=2|P|X| CC |M| PT | sequence number | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ * | timestamp | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ * | synchronization source (SSRC) identifier | * +=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+ * | contributing source (CSRC) identifiers | * | .... | * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ * * RTP data header */ typedef struct { #if RTP_BIG_ENDIAN unsigned int version:2; /* protocol version */ unsigned int p:1; /* padding flag */ unsigned int x:1; /* header extension flag */ unsigned int cc:4; /* CSRC count */ unsigned int m:1; /* marker bit */ unsigned int pt:7; /* payload type */ #else /*RTP_LITTLE_ENDIAN*/ unsigned int cc:4; /* CSRC count */ unsigned int x:1; /* header extension flag */ unsigned int p:1; /* padding flag */ unsigned int version:2; /* protocol version */ unsigned int pt:7; /* payload type */ unsigned int m:1; /* marker bit */ #endif u16 seq; /* sequence number */ u32 ts; /* timestamp */ u32 ssrc; /* synchronization source */ // u32 csrc[1]; /* optional CSRC list, skip because cc is set to 0 here*/ } rtp_hdr_t; enum rtp_object_state { RTP_OBJECT_IDLE = 1, RTP_OBJECT_READY, RTP_OBJECT_INUSE, RTP_OBJECT_USED, }; struct rtp_object { struct list_head rtp_list; _Mutex mutex; rtp_hdr_t rtphdr; u32 *extra; //pointer to type specific structure int index; unsigned char *data; int len; enum rtp_object_state state; //reserved for future use struct connect_context connect_ctx; }; /************************************************************** end of rtp **************************************************************/ /***************************************************************general******************************************************************/ void stream_context_init(struct stream_context *stream_ctx); void stream_context_free(struct stream_context *stream_ctx); /************************************************************** start of rtsp *************************************************************/ int rtsp_atoi(char * s); int rtsp_context_init(struct rtsp_context *rtsp_ctx); void rtsp_readheader(u8 *request_header); u8 * rtsp_parsefield(u8 *buffer, char *field); //parse specific field line and return field data u8 * rtsp_readline(struct rtsp_context *rtsp_ctx, u8 *ptr); //read line starting from ptr and store corresponding parameter in rtsp_ctx void rtsp_getparam(struct rtsp_context *rtsp_ctx, u8 *rtsp_header); void parse_rtsp_type(struct rtsp_context *rtsp_ctx, u8 *rtsp_header); int rtp_tick_inc_to_fps(int tick_inc, int clock_rate); int rtp_fps_to_tick_inc(int framerate, int clock_rate); void gen_session_id(int *session_id); void rtsp_formSdp(struct rtsp_context *rtsp_ctx, u8 *sdp_buffer, int size); void rtsp_cmd_options(struct rtsp_context *rtsp_ctx); void rtsp_cmd_describe(struct rtsp_context *rtsp_ctx); void rtsp_cmd_setup(struct rtsp_context *rtsp_ctx); void rtsp_cmd_play(struct rtsp_context *rtsp_ctx); void rtsp_cmd_pause(struct rtsp_context *rtsp_ctx); void rtsp_cmd_teardown(struct rtsp_context *rtsp_ctx); void rtsp_cmd_error(struct rtsp_context *rtsp_ctx); void rtsp_init(void *param); /************************************************************** end of rtsp *************************************************************/ /************************************************************** start of rtp **************************************************************/ void fillRtpHeader(rtp_hdr_t *rtphdr, int version, int padding, int extension, int cc, int marker, int pt, u16 seq, u32 ts, u32 ssrc); /************************************************************** end of rtp **************************************************************/ #endif