doubango/tinyRTP/src/rtcp/trtp_rtcp_packet.c
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 #if HAVE_CRT
 #define _CRTDBG_MAP_ALLOC 
 #include <stdlib.h> 
 #include <crtdbg.h>
 #endif //HAVE_CRT
 /*
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 * Copyright (C) 2020, University of the Basque Country (UPV/EHU)
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 * Contact for licensing options: <licensing-mcpttclient(at)mcopenplatform(dot)com>
 *
 * The original file was part of Open Source Doubango Framework
 * Copyright (C) 2010-2011 Mamadou Diop.
 * Copyright (C) 2012 Doubango Telecom <http://doubango.org>
 *
 * This file is part of Open Source Doubango Framework.
 *
 * DOUBANGO is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * DOUBANGO is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with DOUBANGO.
 *
 */
 #include "tinyrtp/rtcp/trtp_rtcp_packet.h"
 
 #include "tinyrtp/rtcp/trtp_rtcp_header.h"
 #include "tinyrtp/rtcp/trtp_rtcp_report_sdes.h"
 #include "tinyrtp/rtcp/trtp_rtcp_report_sr.h"
 #include "tinyrtp/rtcp/trtp_rtcp_report_rr.h"
 #include "tinyrtp/rtcp/trtp_rtcp_report_bye.h"
 #include "tinyrtp/rtcp/trtp_rtcp_report_fb.h"
 #include "tinyrtp/rtcp/trtp_rtcp_report_app.h"
 
 #include "tsk_debug.h"
 
 static tsk_object_t* trtp_rtcp_packet_ctor(tsk_object_t * self, va_list * app)
 {
 	trtp_rtcp_packet_t *packet = self;
 	if(packet){
 	}
 	return self;
 }
 
 static tsk_object_t* trtp_rtcp_packet_dtor(tsk_object_t * self)
 { 
 	trtp_rtcp_packet_t *packet = self;
 	if(packet){
 
 	}
 
 	return self;
 }
 
 static const tsk_object_def_t trtp_rtcp_packet_def_s = 
 {
 	sizeof(trtp_rtcp_packet_t),
 	trtp_rtcp_packet_ctor, 
 	trtp_rtcp_packet_dtor,
 	tsk_null, 
 };
 const tsk_object_def_t *trtp_rtcp_packet_def_t = &trtp_rtcp_packet_def_s;
 
 trtp_rtcp_packet_t* trtp_rtcp_packet_create(struct trtp_rtcp_header_s* header)
 {
 	trtp_rtcp_packet_t* packet;
 	if((packet = tsk_object_new(trtp_rtcp_packet_def_t)) && header){
 		packet->header = tsk_object_ref(header);
 	}
 	return packet;
 }
 
 
 int trtp_rtcp_packet_init(trtp_rtcp_packet_t* self, uint8_t version, uint8_t padding, uint8_t rc, trtp_rtcp_packet_type_t type, uint16_t length_in_bytes)
 {
 	if(!self){
 		TSK_DEBUG_ERROR("Invalid parameter");
 		return -1;
 	}
 	if(!self->header){
 		self->header = trtp_rtcp_header_create(version, padding, rc, type, length_in_bytes);
 	}
 	else{
 		self->header->version = version;
 		self->header->padding = padding;
 		self->header->rc = rc;
 		self->header->type = type;
 		self->header->length_in_bytes = length_in_bytes;
 		self->header->length_in_words_minus1 = ((length_in_bytes >> 2) - 1);
 	}
 	return 0;
 }
 
 trtp_rtcp_packet_t* trtp_rtcp_packet_deserialize(const void* data, tsk_size_t size)
 {
 	trtp_rtcp_packet_type_t type;
 
 	if(!data || size < TRTP_RTCP_HEADER_SIZE){
 		TSK_DEBUG_ERROR("Invalid parameter");
 		return tsk_null;
 	}
 
 	type = (trtp_rtcp_packet_type_t)((const uint8_t*)data)[1];
 
 	switch(type){
 		case trtp_rtcp_packet_type_rr: return (trtp_rtcp_packet_t*)trtp_rtcp_report_rr_deserialize(data, size);
 		case trtp_rtcp_packet_type_sr: return (trtp_rtcp_packet_t*)trtp_rtcp_report_sr_deserialize(data, size);
 		case trtp_rtcp_packet_type_sdes: return (trtp_rtcp_packet_t*)trtp_rtcp_report_sdes_deserialize(data, size);
 		case trtp_rtcp_packet_type_bye: return (trtp_rtcp_packet_t*)trtp_rtcp_report_bye_deserialize(data, size);
 		case trtp_rtcp_packet_type_rtpfb: return (trtp_rtcp_packet_t*)trtp_rtcp_report_rtpfb_deserialize(data, size);
 		case trtp_rtcp_packet_type_psfb: return (trtp_rtcp_packet_t*)trtp_rtcp_report_psfb_deserialize(data, size);
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 		case trtp_rtcp_packet_type_app: return (trtp_rtcp_packet_t*)trtp_rtcp_report_app_deserialize(data, size);
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 		default:
 			{
 				// returns abstract RTCP packet
 				trtp_rtcp_header_t* header;
 				TSK_DEBUG_ERROR("%d not recognized as valid RTCP packet type", (int)type);
 				if((header = trtp_rtcp_header_deserialize(data, size))){
 					trtp_rtcp_packet_t* packet = trtp_rtcp_packet_create(header);
 					TSK_OBJECT_SAFE_FREE(header);
 					return packet;
 				}
 				break;
 			}
 	}
 
 	return tsk_null;
 }
 
 int trtp_rtcp_packet_serialize_to(const trtp_rtcp_packet_t* self, void* data, tsk_size_t size)
 {
 	if(!self || !self->header || !data || !size){
 		TSK_DEBUG_ERROR("Invalid parameter");
 		return -1;
 	}
 
 	switch(self->header->type){
 		case trtp_rtcp_packet_type_rr: return trtp_rtcp_report_rr_serialize_to((const trtp_rtcp_report_rr_t*)self, data, size);
 		case trtp_rtcp_packet_type_sr: return trtp_rtcp_report_sr_serialize_to((const trtp_rtcp_report_sr_t*)self, data, size);
 		case trtp_rtcp_packet_type_sdes: return trtp_rtcp_report_sdes_serialize_to((const trtp_rtcp_report_sdes_t*)self, data, size);
 		case trtp_rtcp_packet_type_bye: return trtp_rtcp_report_bye_serialize_to((const trtp_rtcp_report_bye_t*)self, data, size);
 		case trtp_rtcp_packet_type_psfb: return trtp_rtcp_report_psfb_serialize_to((const trtp_rtcp_report_psfb_t*)self, data, size);
 		case trtp_rtcp_packet_type_rtpfb: return trtp_rtcp_report_rtpfb_serialize_to((const trtp_rtcp_report_rtpfb_t*)self, data, size);
 		default:
 			{
 				TSK_DEBUG_ERROR("%d not recognized as valid RTCP packet type", (int)self->header->type);
 				return -2;
 			}
 	}
 }
 
 tsk_buffer_t* trtp_rtcp_packet_serialize(const trtp_rtcp_packet_t* self, tsk_size_t num_bytes_pad)
 {
 	tsk_size_t size = trtp_rtcp_packet_get_size(self);
 	if(self && size){
 		tsk_buffer_t* buffer;
 		const tsk_size_t _size = (size + num_bytes_pad);
 		if((buffer = tsk_buffer_create(tsk_null, _size))){
 			if(trtp_rtcp_packet_serialize_to(self, buffer->data, size) != 0){
 				TSK_OBJECT_SAFE_FREE(buffer);
 			}
 			else buffer->size = size;
 			return buffer;
 		}
 	}
 	return tsk_null;
 }
 
 int trtp_rtcp_packet_add_packet(trtp_rtcp_packet_t* self, trtp_rtcp_packet_t* packet, tsk_bool_t front)
 {
 	trtp_rtcp_packets_L_t* packets = tsk_null;
 	if(!self || !self->header || !packet){
 		TSK_DEBUG_ERROR("Invalid parameter");
 		return -1;
 	}
 
 	switch(self->header->type){
 		case trtp_rtcp_packet_type_rr: packets = ((trtp_rtcp_report_rr_t*)self)->packets; break;
 		case trtp_rtcp_packet_type_sr: packets = ((trtp_rtcp_report_sr_t*)self)->packets; break;
 		case trtp_rtcp_packet_type_bye: packets = ((trtp_rtcp_report_bye_t*)self)->packets; break;
 		default: TSK_DEBUG_ERROR("not valid operation for packet type %d", (int)self->header->type); return -2;
 	}
 
 	if(packets){
 		//tsk_size_t packet_size = trtp_rtcp_packet_get_size(packet);
 		packet = tsk_object_ref(packet);
 		// self->header->length_in_bytes += packet_size;
 		// self->header->length_in_words_minus1 = ((self->header->length_in_bytes >> 2) - 1) + 
 		//	((self->header->length_in_bytes & 0x03) ? 1 : 0);
 		tsk_list_push_data(packets, (void**)&packet, !front);
 	}
 
 	return 0;
 }
 
 const trtp_rtcp_packet_t* trtp_rtcp_packet_get_at(const trtp_rtcp_packet_t* self, trtp_rtcp_packet_type_t type, tsk_size_t index)
 {
 	const tsk_list_item_t *item;
 	const trtp_rtcp_packets_L_t* packets = tsk_null;
 	tsk_size_t i;
 
 	if(!self || !self->header){
 		TSK_DEBUG_ERROR("Invalid parameter");
 		return tsk_null;
 	}
 	if(self->header->type == type && index == 0){
 		return self;
 	}
 	switch(self->header->type){
 		case trtp_rtcp_packet_type_rr: packets = ((const trtp_rtcp_report_rr_t*)self)->packets; break;
 		case trtp_rtcp_packet_type_sr: packets = ((const trtp_rtcp_report_sr_t*)self)->packets; break;
 		case trtp_rtcp_packet_type_bye: packets = ((const trtp_rtcp_report_bye_t*)self)->packets; break;
         default: break;
 	}
 
 	i = 0;
 	tsk_list_foreach(item, packets){
 		if(TRTP_RTCP_PACKET(item->data)->header->type == type && i++ >= index){
 			return TRTP_RTCP_PACKET(item->data);
 		}
 	}
 	return tsk_null;
 }
 
 const trtp_rtcp_packet_t* trtp_rtcp_packet_get(const trtp_rtcp_packet_t* self, trtp_rtcp_packet_type_t type)
 {
 	return trtp_rtcp_packet_get_at(self, type, 0);
 }
 
 tsk_size_t trtp_rtcp_packet_get_size(const trtp_rtcp_packet_t* self)
 {
 	if(!self || !self->header){
 		TSK_DEBUG_ERROR("Invalid parameter");
 		return 0;
 	}
 
 	switch(self->header->type){
 		case trtp_rtcp_packet_type_rr: return trtp_rtcp_report_rr_get_size((const trtp_rtcp_report_rr_t*)self);
 		case trtp_rtcp_packet_type_sr: return trtp_rtcp_report_sr_get_size((const trtp_rtcp_report_sr_t*)self);
 		case trtp_rtcp_packet_type_sdes: return trtp_rtcp_report_sdes_get_size((const trtp_rtcp_report_sdes_t*)self);
 		case trtp_rtcp_packet_type_bye: return trtp_rtcp_report_bye_get_size((const trtp_rtcp_report_bye_t*)self);
 		case trtp_rtcp_packet_type_rtpfb: return trtp_rtcp_report_rtpfb_get_size((const trtp_rtcp_report_rtpfb_t*)self);
 		case trtp_rtcp_packet_type_psfb: return trtp_rtcp_report_psfb_get_size((const trtp_rtcp_report_psfb_t*)self);
 		default:
 			{
 				TSK_DEBUG_ERROR("%d not recognized as valid RTCP packet type", (int)self->header->type);
 				return self->header->length_in_bytes;
 			}
 	}
 }
 
 int trtp_rtcp_packet_deinit(trtp_rtcp_packet_t* self)
 {
 	if(!self){
 		TSK_DEBUG_ERROR("Invalid parameter");
 		return -1;
 	}
 	TSK_OBJECT_SAFE_FREE(self->header);
 	return 0;
 }