/*

 * Copyright (C) 2020, University of the Basque Country (UPV/EHU)

 * 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.
 *
 */
 
 /**@file tmedia_content.h
  * @brief Base content object.
  *
  * @author Mamadou Diop <diopmamadou(at)doubango[dot]org>
  *
  */
 #ifndef TINYMEDIA_CONTENT_H
 #define TINYMEDIA_CONTENT_H
 
 #include "tinymedia_config.h"
 
 #include "tsk_buffer.h"
 #include "tsk_list.h"
 #include "tsk_params.h"
 
 TMEDIA_BEGIN_DECLS
 
 /**Max number of plugins (content types) we can create */
 #define TMEDIA_CONTENT_MAX_PLUGINS			0x0F
 
 /** cast any pointer to @ref tmedia_content_t* object */
 #define TMEDIA_CONTENT(self)		((tmedia_content_t*)(self))
 
 /** Base object for all contents */
 typedef struct tmedia_content_s
 {
 	TSK_DECLARE_OBJECT;
 
 	const char* type;
 	//! plugin used to create the codec
 	const struct tmedia_content_plugin_def_s* plugin;
 }
 tmedia_content_t;
 
 /** Virtual table used to define a content plugin */
 typedef struct tmedia_content_plugin_def_s
 {
 	//! object definition used to create an instance of the codec
 	const tsk_object_def_t* objdef;
 
 	//! e.g. 'message/CPIM'
 	const char* type;
 
 	int (*parse) (tmedia_content_t*, const void* in_data, tsk_size_t in_size);
 	tsk_buffer_t* (*get_data) (tmedia_content_t*);
 }
 tmedia_content_plugin_def_t;
 
 /** List of @ref tmedia_codec_t elements */
 typedef tsk_list_t tmedia_contents_L_t;
 
 /**< Declare base class as content */
 #define TMEDIA_DECLARE_CONTENT tmedia_content_t __content__
 
 TINYMEDIA_API int tmedia_content_plugin_register(const char* type, const tmedia_content_plugin_def_t* plugin);
 TINYMEDIA_API int tmedia_content_plugin_unregister(const char* type, const tmedia_content_plugin_def_t* plugin);
 TINYMEDIA_API int tmedia_content_plugin_unregister_all();
 
 TINYMEDIA_API tmedia_content_t* tmedia_content_create(const char* type);
 TINYMEDIA_API tmedia_content_t* tmedia_content_parse(const void* data, tsk_size_t size, const char* type);
 
 TINYMEDIA_API int tmedia_content_init(tmedia_content_t* self);
 TINYMEDIA_API int tmedia_content_deinit(tmedia_content_t* self);
 TINYMEDIA_API tsk_buffer_t* tmedia_content_get_data(tmedia_content_t* self);
 
 /** dummy content */
 typedef struct tmedia_content_dummy_s
 {
 	TMEDIA_DECLARE_CONTENT;
 	
 	tsk_buffer_t* data;
 }
 tmedia_content_dummy_t;
 
 #define TMEDIA_CONTENT_DUMMY(self)	((tmedia_content_dummy_t*)(self))
 #define TMEDIA_CONTENT_IS_DUMMY(self) ( (self) && (TMEDIA_CONTENT((self))->plugin==tmedia_content_dummy_plugin_def_t) )
 
 TINYMEDIA_GEXTERN const tmedia_content_plugin_def_t *tmedia_content_dummy_plugin_def_t;
 
 
 /** content header */
 typedef struct tmedia_content_header_s
 {
 	TSK_DECLARE_OBJECT;
 
 	char* name;
 	char* value;
 	tsk_params_L_t* params;
 }
 tmedia_content_header_t;
 
 tmedia_content_header_t* tmedia_content_header_create(const char* name, const char* value);
 int tmedia_content_header_deinit(tmedia_content_header_t* self);
 char* tmedia_content_header_tostring(const tmedia_content_header_t* self);
 
 #define TMEDIA_CONTENT_HEADER(self)	((tmedia_content_header_t*)(self))
 #define TMEDIA_DECLARE_CONTENT_HEADER tmedia_content_header_t __content_header__
 typedef tsk_list_t tmedia_content_headers_L_t;
 
 TINYMEDIA_GEXTERN const tsk_object_def_t *tmedia_content_header_def_t;
 
 TMEDIA_END_DECLS
 
 #endif /* TINYMEDIA_CONTENT_H */