static rmff_header_t *real_parse_sdp(char *data, char **stream_rules, uint32_t bandwidth) { sdpplin_t *desc; rmff_header_t *header; char *buf; int len, i; int max_bit_rate=0; int avg_bit_rate=0; int max_packet_size=0; int avg_packet_size=0; int duration=0; if (!data) return NULL; desc=sdpplin_parse(data); if (!desc) return NULL; buf = xbuffer_init(2048); header=calloc(1,sizeof(rmff_header_t)); header->fileheader=rmff_new_fileheader(4+desc->stream_count); header->cont=rmff_new_cont( desc->title, desc->author, desc->copyright, desc->abstract); header->data=rmff_new_dataheader(0,0); header->streams=calloc(1,sizeof(rmff_mdpr_t*)*(desc->stream_count+1)); #ifdef LOG printf("number of streams: %u\n", desc->stream_count); #endif for (i=0; i<desc->stream_count; i++) { int j=0; int n; char b[64]; int rulematches[MAX_RULEMATCHES]; if (!desc->stream[i]) continue; #ifdef LOG printf("calling asmrp_match with:\n%s\n%u\n", desc->stream[i]->asm_rule_book, bandwidth); #endif n=asmrp_match(desc->stream[i]->asm_rule_book, bandwidth, rulematches); for (j=0; j<n; j++) { #ifdef LOG printf("asmrp rule match: %u for stream %u\n", rulematches[j], desc->stream[i]->stream_id); #endif sprintf(b,"stream=%u;rule=%u,", desc->stream[i]->stream_id, rulematches[j]); *stream_rules = xbuffer_strcat(*stream_rules, b); } if (!desc->stream[i]->mlti_data) { len = 0; buf = xbuffer_free(buf); } else len=select_mlti_data(desc->stream[i]->mlti_data, desc->stream[i]->mlti_data_size, rulematches[0], &buf); header->streams[i]=rmff_new_mdpr( desc->stream[i]->stream_id, desc->stream[i]->max_bit_rate, desc->stream[i]->avg_bit_rate, desc->stream[i]->max_packet_size, desc->stream[i]->avg_packet_size, desc->stream[i]->start_time, desc->stream[i]->preroll, desc->stream[i]->duration, desc->stream[i]->stream_name, desc->stream[i]->mime_type, len, buf); duration=FFMAX(duration,desc->stream[i]->duration); max_bit_rate+=desc->stream[i]->max_bit_rate; avg_bit_rate+=desc->stream[i]->avg_bit_rate; max_packet_size=FFMAX(max_packet_size, desc->stream[i]->max_packet_size); if (avg_packet_size) avg_packet_size=(avg_packet_size + desc->stream[i]->avg_packet_size) / 2; else avg_packet_size=desc->stream[i]->avg_packet_size; } if (*stream_rules && strlen(*stream_rules) && (*stream_rules)[strlen(*stream_rules)-1] == ',') (*stream_rules)[strlen(*stream_rules)-1]=0; /* delete last ',' in stream_rules */ header->prop=rmff_new_prop( max_bit_rate, avg_bit_rate, max_packet_size, avg_packet_size, 0, duration, 0, 0, 0, desc->stream_count, desc->flags); rmff_fix_header(header); buf = xbuffer_free(buf); sdpplin_free(desc); return header; }
rmff_header_t *real_setup_and_get_header(rtsp_t *rtsp_session, uint32_t bandwidth, char *username, char *password) { char *description=NULL; char *session_id=NULL; rmff_header_t *h = NULL; char *challenge1 = NULL; char challenge2[41]; char checksum[9]; char *subscribe = NULL; char *buf = xbuffer_init(256); char *mrl=rtsp_get_mrl(rtsp_session); unsigned int size; int status; uint32_t maxbandwidth = bandwidth; char* authfield = NULL; int i; /* get challenge */ challenge1=rtsp_search_answers(rtsp_session,"RealChallenge1"); if (!challenge1) goto out; challenge1=strdup(challenge1); #ifdef LOG printf("real: Challenge1: %s\n", challenge1); #endif /* set a reasonable default to get the best stream, unless bandwidth given */ if (!bandwidth) bandwidth = 10485800; /* request stream description */ rtsp_send_describe: rtsp_schedule_field(rtsp_session, "Accept: application/sdp"); sprintf(buf, "Bandwidth: %u", bandwidth); rtsp_schedule_field(rtsp_session, buf); rtsp_schedule_field(rtsp_session, "GUID: 00000000-0000-0000-0000-000000000000"); rtsp_schedule_field(rtsp_session, "RegionData: 0"); rtsp_schedule_field(rtsp_session, "ClientID: Linux_2.4_6.0.9.1235_play32_RN01_EN_586"); rtsp_schedule_field(rtsp_session, "SupportsMaximumASMBandwidth: 1"); rtsp_schedule_field(rtsp_session, "Language: en-US"); rtsp_schedule_field(rtsp_session, "Require: com.real.retain-entity-for-setup"); if(authfield) rtsp_schedule_field(rtsp_session, authfield); status=rtsp_request_describe(rtsp_session,NULL); if (status == 401) { int authlen, b64_authlen; char *authreq; char* authstr = NULL; if (authfield) { mp_msg(MSGT_STREAM, MSGL_ERR, "realrtsp: authorization failed, check your credentials\n"); goto autherr; } if (!(authreq = rtsp_search_answers(rtsp_session,"WWW-Authenticate"))) { mp_msg(MSGT_STREAM, MSGL_ERR, "realrtsp: 401 but no auth request, aborting\n"); goto autherr; } if (!username) { mp_msg(MSGT_STREAM, MSGL_ERR, "realrtsp: auth required but no username supplied\n"); goto autherr; } if (!strstr(authreq, "Basic")) { mp_msg(MSGT_STREAM, MSGL_ERR, "realrtsp: authenticator not supported (%s)\n", authreq); goto autherr; } authlen = strlen(username) + (password ? strlen(password) : 0) + 2; authstr = malloc(authlen); sprintf(authstr, "%s:%s", username, password ? password : ""); authfield = malloc(authlen*2+22); strcpy(authfield, "Authorization: Basic "); b64_authlen = base64_encode(authstr, authlen, authfield+21, authlen*2); free(authstr); if (b64_authlen < 0) { mp_msg(MSGT_STREAM, MSGL_ERR, "realrtsp: base64 output overflow, this should never happen\n"); goto autherr; } authfield[b64_authlen+21] = 0; goto rtsp_send_describe; } autherr: if (authfield) free(authfield); if ( status<200 || status>299 ) { char *alert=rtsp_search_answers(rtsp_session,"Alert"); if (alert) { mp_msg(MSGT_STREAM, MSGL_WARN, "realrtsp: got message from server:\n%s\n", alert); } rtsp_send_ok(rtsp_session); goto out; } /* receive description */ size=0; if (!rtsp_search_answers(rtsp_session,"Content-length")) mp_msg(MSGT_STREAM, MSGL_WARN, "real: got no Content-length!\n"); else size=atoi(rtsp_search_answers(rtsp_session,"Content-length")); // as size is unsigned this also catches the case (size < 0) if (size > MAX_DESC_BUF) { mp_msg(MSGT_STREAM, MSGL_ERR, "realrtsp: Content-length for description too big (> %uMB)!\n", MAX_DESC_BUF/(1024*1024) ); goto out; } if (!rtsp_search_answers(rtsp_session,"ETag")) mp_msg(MSGT_STREAM, MSGL_WARN, "realrtsp: got no ETag!\n"); else session_id=strdup(rtsp_search_answers(rtsp_session,"ETag")); #ifdef LOG printf("real: Stream description size: %u\n", size); #endif description=malloc(size+1); if( rtsp_read_data(rtsp_session, description, size) <= 0) { goto out; } description[size]=0; /* parse sdp (sdpplin) and create a header and a subscribe string */ subscribe = xbuffer_init(256); strcpy(subscribe, "Subscribe: "); h=real_parse_sdp(description, &subscribe, bandwidth); if (!h) { goto out; } rmff_fix_header(h); #ifdef LOG printf("Title: %s\nCopyright: %s\nAuthor: %s\nStreams: %i\n", h->cont->title, h->cont->copyright, h->cont->author, h->prop->num_streams); #endif /* setup our streams */ real_calc_response_and_checksum (challenge2, checksum, challenge1); buf = xbuffer_ensure_size(buf, strlen(challenge2) + strlen(checksum) + 32); sprintf(buf, "RealChallenge2: %s, sd=%s", challenge2, checksum); rtsp_schedule_field(rtsp_session, buf); buf = xbuffer_ensure_size(buf, strlen(session_id) + 32); sprintf(buf, "If-Match: %s", session_id); rtsp_schedule_field(rtsp_session, buf); rtsp_schedule_field(rtsp_session, "Transport: x-pn-tng/tcp;mode=play,rtp/avp/tcp;unicast;mode=play"); buf = xbuffer_ensure_size(buf, strlen(mrl) + 32); sprintf(buf, "%s/streamid=0", mrl); rtsp_request_setup(rtsp_session,buf,NULL); /* Do setup for all the other streams we subscribed to */ for (i = 1; i < h->prop->num_streams; i++) { rtsp_schedule_field(rtsp_session, "Transport: x-pn-tng/tcp;mode=play,rtp/avp/tcp;unicast;mode=play"); buf = xbuffer_ensure_size(buf, strlen(session_id) + 32); sprintf(buf, "If-Match: %s", session_id); rtsp_schedule_field(rtsp_session, buf); buf = xbuffer_ensure_size(buf, strlen(mrl) + 32); sprintf(buf, "%s/streamid=%d", mrl, i); rtsp_request_setup(rtsp_session,buf,NULL); } /* set stream parameter (bandwidth) with our subscribe string */ rtsp_schedule_field(rtsp_session, subscribe); rtsp_request_setparameter(rtsp_session,NULL); /* set delivery bandwidth */ if (maxbandwidth) { sprintf(buf, "SetDeliveryBandwidth: Bandwidth=%u;BackOff=0", maxbandwidth); rtsp_schedule_field(rtsp_session, buf); rtsp_request_setparameter(rtsp_session,NULL); } { int s_ss = 0, s_ms = 0, e_ss = 0, e_ms = 0; char *str; if ((str = rtsp_get_param(rtsp_session, "start"))) { convert_timestamp(str, &s_ss, &s_ms); free(str); } if ((str = rtsp_get_param(rtsp_session, "end"))) { convert_timestamp(str, &e_ss, &e_ms); free(str); } str = buf + sprintf(buf, s_ms ? "%s%d.%d-" : "%s%d-", "Range: npt=", s_ss, s_ms); if (e_ss || e_ms) sprintf(str, e_ms ? "%d.%d" : "%d", e_ss, e_ms); } rtsp_schedule_field(rtsp_session, buf); /* and finally send a play request */ rtsp_request_play(rtsp_session,NULL); out: subscribe = xbuffer_free(subscribe); buf = xbuffer_free(buf); free(description); free(session_id); free(challenge1); return h; }
/* * parse sdp(stream description) lines. * * subscribe is "Subscribe: " which is send with SET_PARAMETER request. * */ struct rmff_header_t *real_parse_sdp(char *data,char **subscribe,int bw) { struct sdpreal_t *desc; struct list_h *p; struct rmff_header_t *rmff_header; uint8_t *buf; int *matched; /* array of matched rules. malloced in find_asmrule_match */ int matched_rules; int i,j; int mlti_data_len; int subscribe_len = BUFSIZE_1K; char subbuf[32]; int duration =0; int max_bit_rate = 0; int avg_bit_rate = 0; int max_packet_size = 0; int avg_packet_size = 0; desc = sdpreal_parse(data); rmff_header = new_rmff_header_t(); rmff_header->fileheader = new_rmff_fileheader(4 + desc->stream_count); rmff_header->cont = new_rmff_cont(desc->title,desc->author, desc->copyright,desc->abstract); rmff_header->data = new_rmff_dataheader(0,0); rmff_header->streams = (rmff_mdpr_t**)xmalloc(sizeof(struct rmff_mdpr_t*) * (desc->stream_count + 1)); display(MSDL_VER,"number of streams: %u\n",desc->stream_count); *subscribe = (char *)xmalloc(subscribe_len); strcpy(*subscribe,"Subscribe: "); for(i = 0,p = desc->streams; i < desc->stream_count; i++,p = p->next) { struct sdpreal_stream_t *stream = (sdpreal_stream_t *)p->p; /* Subscribe: stream=0;rule=16,stream=0;rule=17 */ matched_rules = find_asmrule_match(stream->asm_rule_book, &matched,bw); if((strlen(*subscribe) + 32 * matched_rules) > subscribe_len) { /* subscribe should be longer */ subscribe_len = (subscribe_len * 2 > strlen(*subscribe) + 32 * matched_rules) ? subscribe_len * 2 : strlen(*subscribe) + 32 * matched_rules; *subscribe = (char *)xrealloc(*subscribe,subscribe_len); } for(j = 0; j < matched_rules ; j++) { snprintf(subbuf,sizeof(subbuf),"stream=%u;rule=%u,",i,matched[j]); strcat(*subscribe,subbuf); } buf = NULL; if(!stream->mlti_data) { mlti_data_len = 0; } else { /* buf is malloc()ed inside select_mlti_data */ mlti_data_len = select_mlti_data(stream->mlti_data, stream->mlti_data_size, matched[0],&buf); } rmff_header->streams[i] = new_rmff_mdpr(stream->stream_id, stream->max_bit_rate, stream->avg_bit_rate, stream->max_packet_size, stream->avg_packet_size, stream->start_time, stream->preroll, stream->duration, stream->stream_name, stream->mime_type, mlti_data_len, buf); duration = (duration > stream->duration) ? duration : stream->duration; max_bit_rate += stream->max_bit_rate; avg_bit_rate += stream->avg_bit_rate; max_packet_size = (max_packet_size > stream->max_packet_size) ? max_packet_size : stream->max_packet_size; if(avg_packet_size) { avg_packet_size = (avg_packet_size + stream->avg_packet_size) / 2; } else { avg_packet_size = stream->avg_packet_size; } if(matched) { free(matched); matched = NULL; } if(buf) { free(buf); buf = NULL; } } if((*subscribe)[strlen(*subscribe) -1 ] == ',') { (*subscribe)[strlen(*subscribe) -1 ] = '\0'; /* delete last comma */ } rmff_header->prop = new_rmff_prop(max_bit_rate, avg_bit_rate, max_packet_size, avg_packet_size, 0, duration, 0,0,0, desc->stream_count, desc->flags); rmff_fix_header(rmff_header); free_sdpreal_t(desc); rmff_print_header(rmff_header); return rmff_header; }