/** Generate SDP string by MRCP descriptor */ MRCP_DECLARE(apr_size_t) sdp_string_generate_by_mrcp_descriptor(char *buffer, apr_size_t size, const mrcp_session_descriptor_t *descriptor, apt_bool_t offer) { apr_size_t i; apr_size_t count; apr_size_t audio_index = 0; mpf_rtp_media_descriptor_t *audio_media; apr_size_t video_index = 0; mpf_rtp_media_descriptor_t *video_media; apr_size_t control_index = 0; mrcp_control_descriptor_t *control_media; apr_size_t offset = 0; const char *ip = descriptor->ext_ip.buf ? descriptor->ext_ip.buf : (descriptor->ip.buf ? descriptor->ip.buf : "0.0.0.0"); buffer[0] = '\0'; offset += snprintf(buffer+offset,size-offset, "v=0\r\n" "o=%s 0 0 IN IP4 %s\r\n" "s=-\r\n" "c=IN IP4 %s\r\n" "t=0 0\r\n", descriptor->origin.buf ? descriptor->origin.buf : "-", ip, ip); count = mrcp_session_media_count_get(descriptor); for(i=0; i<count; i++) { audio_media = mrcp_session_audio_media_get(descriptor,audio_index); if(audio_media && audio_media->id == i) { /* generate audio media */ audio_index++; offset += sdp_rtp_media_generate(buffer+offset,size-offset,descriptor,audio_media); continue; } video_media = mrcp_session_video_media_get(descriptor,video_index); if(video_media && video_media->id == i) { /* generate video media */ video_index++; offset += sdp_rtp_media_generate(buffer+offset,size-offset,descriptor,video_media); continue; } control_media = mrcp_session_control_media_get(descriptor,control_index); if(control_media && control_media->id == i) { /** generate mrcp control media */ control_index++; offset += sdp_control_media_generate(buffer+offset,size-offset,descriptor,control_media,offer); continue; } } return offset; }
/** Generate RTSP request by MRCP descriptor */ MRCP_DECLARE(rtsp_message_t*) rtsp_request_generate_by_mrcp_descriptor(const mrcp_session_descriptor_t *descriptor, const apr_table_t *resource_map, apr_pool_t *pool) { apr_size_t i; apr_size_t count; apr_size_t audio_index = 0; mpf_rtp_media_descriptor_t *audio_media; apr_size_t video_index = 0; mpf_rtp_media_descriptor_t *video_media; apr_size_t offset = 0; char buffer[2048]; apr_size_t size = sizeof(buffer); rtsp_message_t *request; const char *ip = descriptor->ext_ip.buf ? descriptor->ext_ip.buf : (descriptor->ip.buf ? descriptor->ip.buf : "0.0.0.0"); request = rtsp_request_create(pool); request->start_line.common.request_line.resource_name = rtsp_name_get_by_mrcp_name( resource_map, descriptor->resource_name.buf); if(descriptor->resource_state != TRUE) { request->start_line.common.request_line.method_id = RTSP_METHOD_TEARDOWN; return request; } request->start_line.common.request_line.method_id = RTSP_METHOD_SETUP; buffer[0] = '\0'; offset += snprintf(buffer+offset,size-offset, "v=0\r\n" "o=%s 0 0 IN IP4 %s\r\n" "s=-\r\n" "c=IN IP4 %s\r\n" "t=0 0\r\n", descriptor->origin.buf ? descriptor->origin.buf : "-", ip, ip); count = mrcp_session_media_count_get(descriptor); for(i=0; i<count; i++) { audio_media = mrcp_session_audio_media_get(descriptor,audio_index); if(audio_media && audio_media->id == i) { /* generate audio media */ audio_index++; offset += sdp_rtp_media_generate(buffer+offset,size-offset,descriptor,audio_media); request->header.transport.client_port_range.min = audio_media->port; request->header.transport.client_port_range.max = audio_media->port+1; continue; } video_media = mrcp_session_video_media_get(descriptor,video_index); if(video_media && video_media->id == i) { /* generate video media */ video_index++; offset += sdp_rtp_media_generate(buffer+offset,size-offset,descriptor,video_media); continue; } } request->header.transport.protocol = RTSP_TRANSPORT_RTP; request->header.transport.profile = RTSP_PROFILE_AVP; request->header.transport.delivery = RTSP_DELIVERY_UNICAST; rtsp_header_property_add(&request->header.property_set,RTSP_HEADER_FIELD_TRANSPORT); if(offset) { apt_string_assign_n(&request->body,buffer,offset,pool); request->header.content_type = RTSP_CONTENT_TYPE_SDP; rtsp_header_property_add(&request->header.property_set,RTSP_HEADER_FIELD_CONTENT_TYPE); request->header.content_length = offset; rtsp_header_property_add(&request->header.property_set,RTSP_HEADER_FIELD_CONTENT_LENGTH); } return request; }
/** Generate RTSP response by MRCP descriptor */ MRCP_DECLARE(rtsp_message_t*) rtsp_response_generate_by_mrcp_descriptor(const rtsp_message_t *request, const mrcp_session_descriptor_t *descriptor, const apr_table_t *resource_map, apr_pool_t *pool) { rtsp_message_t *response = NULL; switch(descriptor->status) { case MRCP_SESSION_STATUS_OK: response = rtsp_response_create(request,RTSP_STATUS_CODE_OK,RTSP_REASON_PHRASE_OK,pool); break; case MRCP_SESSION_STATUS_NO_SUCH_RESOURCE: response = rtsp_response_create(request,RTSP_STATUS_CODE_NOT_FOUND,RTSP_REASON_PHRASE_NOT_FOUND,pool); break; case MRCP_SESSION_STATUS_UNACCEPTABLE_RESOURCE: case MRCP_SESSION_STATUS_UNAVAILABLE_RESOURCE: response = rtsp_response_create(request,RTSP_STATUS_CODE_NOT_ACCEPTABLE,RTSP_REASON_PHRASE_NOT_ACCEPTABLE,pool); break; case MRCP_SESSION_STATUS_ERROR: response = rtsp_response_create(request,RTSP_STATUS_CODE_INTERNAL_SERVER_ERROR,RTSP_REASON_PHRASE_INTERNAL_SERVER_ERROR,pool); break; } if(!response) { return NULL; } if(descriptor->status == MRCP_SESSION_STATUS_OK) { apr_size_t i; apr_size_t count; apr_size_t audio_index = 0; mpf_rtp_media_descriptor_t *audio_media; apr_size_t video_index = 0; mpf_rtp_media_descriptor_t *video_media; apr_size_t offset = 0; char buffer[2048]; apr_size_t size = sizeof(buffer); const char *ip = descriptor->ext_ip.buf ? descriptor->ext_ip.buf : (descriptor->ip.buf ? descriptor->ip.buf : "0.0.0.0"); buffer[0] = '\0'; offset += snprintf(buffer+offset,size-offset, "v=0\r\n" "o=%s 0 0 IN IP4 %s\r\n" "s=-\r\n" "c=IN IP4 %s\r\n" "t=0 0\r\n", descriptor->origin.buf ? descriptor->origin.buf : "-", ip, ip); count = mrcp_session_media_count_get(descriptor); for(i=0; i<count; i++) { audio_media = mrcp_session_audio_media_get(descriptor,audio_index); if(audio_media && audio_media->id == i) { /* generate audio media */ rtsp_transport_t *transport; audio_index++; offset += sdp_rtp_media_generate(buffer+offset,size-offset,descriptor,audio_media); transport = &response->header.transport; transport->server_port_range.min = audio_media->port; transport->server_port_range.max = audio_media->port+1; transport->client_port_range = request->header.transport.client_port_range; continue; } video_media = mrcp_session_video_media_get(descriptor,video_index); if(video_media && video_media->id == i) { /* generate video media */ video_index++; offset += sdp_rtp_media_generate(buffer+offset,size-offset,descriptor,video_media); continue; } } /* ok */ response->header.transport.protocol = RTSP_TRANSPORT_RTP; response->header.transport.profile = RTSP_PROFILE_AVP; response->header.transport.delivery = RTSP_DELIVERY_UNICAST; rtsp_header_property_add(&response->header.property_set,RTSP_HEADER_FIELD_TRANSPORT); if(offset) { apt_string_assign_n(&response->body,buffer,offset,pool); response->header.content_type = RTSP_CONTENT_TYPE_SDP; rtsp_header_property_add(&response->header.property_set,RTSP_HEADER_FIELD_CONTENT_TYPE); response->header.content_length = offset; rtsp_header_property_add(&response->header.property_set,RTSP_HEADER_FIELD_CONTENT_LENGTH); } } return response; }
/** Generate RTSP response by MRCP descriptor */ MRCP_DECLARE(rtsp_message_t*) rtsp_response_generate_by_mrcp_descriptor(const rtsp_message_t *request, const mrcp_session_descriptor_t *descriptor, apr_pool_t *pool) { apr_size_t i; apr_size_t count; apr_size_t audio_index = 0; mpf_rtp_media_descriptor_t *audio_media; apr_size_t video_index = 0; mpf_rtp_media_descriptor_t *video_media; apr_size_t offset = 0; char buffer[2048]; apr_size_t size = sizeof(buffer); rtsp_message_t *response; if(descriptor->resource_state != TRUE) { response = rtsp_response_create(request,RTSP_STATUS_CODE_NOT_FOUND,RTSP_REASON_PHRASE_NOT_FOUND,pool); return response; } response = rtsp_response_create(request,RTSP_STATUS_CODE_OK,RTSP_REASON_PHRASE_OK,pool); if(!response) { return NULL; } buffer[0] = '\0'; offset += snprintf(buffer+offset,size-offset, "v=0\r\n" "o=%s 0 0 IN IP4 %s\r\n" "s=-\r\n" "c=IN IP4 %s\r\n" "t=0 0\r\n", descriptor->origin.buf ? descriptor->origin.buf : "-", descriptor->ip.buf ? descriptor->ip.buf : "0", descriptor->ip.buf ? descriptor->ip.buf : "0"); count = mrcp_session_media_count_get(descriptor); for(i=0; i<count; i++) { audio_media = mrcp_session_audio_media_get(descriptor,audio_index); if(audio_media && audio_media->base.id == i) { /* generate audio media */ audio_index++; offset += sdp_rtp_media_generate(buffer+offset,size-offset,descriptor,audio_media); continue; } video_media = mrcp_session_video_media_get(descriptor,video_index); if(video_media && video_media->base.id == i) { /* generate video media */ video_index++; offset += sdp_rtp_media_generate(buffer+offset,size-offset,descriptor,video_media); continue; } } /* ok */ response->header.transport.profile = RTSP_PROFILE_RTP_AVP; response->header.transport.delivery = RTSP_DELIVERY_UNICAST; rtsp_header_property_add(&response->header.property_set,RTSP_HEADER_FIELD_TRANSPORT); if(offset) { apt_string_assign_n(&response->body,buffer,offset,pool); response->header.content_type = RTSP_CONTENT_TYPE_SDP; rtsp_header_property_add(&response->header.property_set,RTSP_HEADER_FIELD_CONTENT_TYPE); response->header.content_length = offset; rtsp_header_property_add(&response->header.property_set,RTSP_HEADER_FIELD_CONTENT_LENGTH); } return response; }