/** 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;
}
