// mmst implementation taken from the xine-mms plugin made by majormms (http://geocities.com/majormms/) // // ported to mplayer by Abhijeet Phatak // date : 16 April 2002 // // information about the mms protocol can be find at http://get.to/sdp // #include #include #include #include #include #include #include "config.h" #ifndef HAVE_WINSOCK2 #define closesocket close #else #include #endif #include "url.h" #include "asf.h" #include "stream.h" #include "network.h" #define BUF_SIZE 102400 typedef struct { uint8_t buf[BUF_SIZE]; int num_bytes; } command_t; static int seq_num; static int num_stream_ids; static int stream_ids[20]; static int get_data (int s, char *buf, size_t count); static void put_32 (command_t *cmd, uint32_t value) { cmd->buf[cmd->num_bytes ] = value % 256; value = value >> 8; cmd->buf[cmd->num_bytes+1] = value % 256 ; value = value >> 8; cmd->buf[cmd->num_bytes+2] = value % 256 ; value = value >> 8; cmd->buf[cmd->num_bytes+3] = value % 256 ; cmd->num_bytes += 4; } static uint32_t get_32 (unsigned char *cmd, int offset) { uint32_t ret; ret = cmd[offset] ; ret |= cmd[offset+1]<<8 ; ret |= cmd[offset+2]<<16 ; ret |= cmd[offset+3]<<24 ; return ret; } static void send_command (int s, int command, uint32_t switches, uint32_t extra, int length, char *data) { command_t cmd; int len8; len8 = (length + (length%8)) / 8; cmd.num_bytes = 0; put_32 (&cmd, 0x00000001); /* start sequence */ put_32 (&cmd, 0xB00BFACE); /* #-)) */ put_32 (&cmd, length + 32); put_32 (&cmd, 0x20534d4d); /* protocol type "MMS " */ put_32 (&cmd, len8 + 4); put_32 (&cmd, seq_num); seq_num++; put_32 (&cmd, 0x0); /* unknown */ put_32 (&cmd, 0x0); put_32 (&cmd, len8+2); put_32 (&cmd, 0x00030000 | command); /* dir | command */ put_32 (&cmd, switches); put_32 (&cmd, extra); memcpy (&cmd.buf[48], data, length); if (send (s, cmd.buf, length+48, 0) != (length+48)) { printf ("write error\n"); } } static void string_utf16(char *dest, char *src, int len) { int i; memset (dest, 0, 1000); for (i=0; ibuffer_size==0 ) { // buffer is empty - fill it! int ret = get_media_packet( fd, packet_length1, stream_ctrl); if( ret<0 ) { printf("get_media_packet error : %s\n",strerror(errno)); return -1; } } len = stream_ctrl->buffer_size-stream_ctrl->buffer_pos; if(len>size) len=size; memcpy( buffer, (stream_ctrl->buffer)+(stream_ctrl->buffer_pos), len ); stream_ctrl->buffer_pos += len; if( stream_ctrl->buffer_pos>=stream_ctrl->buffer_size ) { free( stream_ctrl->buffer ); stream_ctrl->buffer = NULL; stream_ctrl->buffer_size = 0; stream_ctrl->buffer_pos = 0; } return len; } int asf_mmst_streaming_seek( int fd, off_t pos, streaming_ctrl_t *streaming_ctrl ) { return -1; // Shut up gcc warning fd++; pos++; streaming_ctrl=NULL; } int asf_mmst_streaming_start(stream_t *stream) { char str[1024]; char data[BUF_SIZE]; uint8_t asf_header[8192]; int asf_header_len; int len, i, packet_length; char *path; URL_t *url1 = stream->streaming_ctrl->url; int s = stream->fd; if( s>0 ) { closesocket( stream->fd ); stream->fd = -1; } /* parse url */ path = strchr(url1->file,'/') + 1; url1->port=1755; s = connect2Server( url1->hostname, url1->port, 1); if( s<0 ) { return s; } printf ("connected\n"); seq_num=0; /* * Send the initial connect info including player version no. Client GUID (random) and the host address being connected to. * This command is sent at the very start of protocol initiation. It sends local information to the serve * cmd 1 0x01 * */ snprintf (str, 1023, "\034\003NSPlayer/7.0.0.1956; {33715801-BAB3-9D85-24E9-03B90328270A}; Host: %s", url1->hostname); string_utf16 (data, str, strlen(str)+2); // send_command(s, commandno ....) send_command (s, 1, 0, 0x0004000b, strlen(str) * 2+8, data); len = recv (s, data, BUF_SIZE, 0) ; /*This sends details of the local machine IP address to a Funnel system at the server. * Also, the TCP or UDP transport selection is sent. * * here 192.168.0.129 is local ip address TCP/UDP states the tronsport we r using * and 1037 is the local TCP or UDP socket number * cmd 2 0x02 * */ string_utf16 (&data[8], "\002\000\\\\192.168.0.1\\TCP\\1037\0000", 28); memset (data, 0, 8); send_command (s, 2, 0, 0, 28*2+8, data); len = recv (s, data, BUF_SIZE, 0) ; /* This command sends file path (at server) and file name request to the server. * 0x5 */ string_utf16 (&data[8], path, strlen(path)); memset (data, 0, 8); send_command (s, 5, 0, 0, strlen(path)*2+12, data); get_answer (s); /* The ASF header chunk request. Includes ?session' variable for pre header value. * After this command is sent, * the server replies with 0x11 command and then the header chunk with header data follows. * 0x15 */ memset (data, 0, 40); data[32] = 2; send_command (s, 0x15, 1, 0, 40, data); num_stream_ids = 0; /* get_headers(s, asf_header); */ asf_header_len = get_header (s, asf_header, stream->streaming_ctrl); // printf("---------------------------------- asf_header %d\n",asf_header); packet_length = interp_header (asf_header, asf_header_len); /* * This command is the media stream MBR selector. Switches are always 6 bytes in length. * After all switch elements, data ends with bytes [00 00] 00 20 ac 40 [02]. * Where: * [00 00] shows 0x61 0x00 (on the first 33 sent) or 0xff 0xff for ASF files, and with no ending data for WMV files. * It is not yet understood what all this means. * And the last [02] byte is probably the header ?session' value. * * 0x33 */ memset (data, 0, 40); for (i=1; ifd = s; stream->streaming_ctrl->streaming_read = asf_mmst_streaming_read; stream->streaming_ctrl->streaming_seek = asf_mmst_streaming_seek; stream->streaming_ctrl->buffering = 1; stream->streaming_ctrl->status = streaming_playing_e; packet_length1 = packet_length; printf("mmst packet_length = %d\n",packet_length); return 0; }