| c732d49e |
* 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.c
* @brief Base content object.
*/
#include "tinymedia/content/tmedia_content.h"
#include "tsk_memory.h"
#include "tsk_string.h"
#include "tsk_debug.h"
#include <string.h>
/**@defgroup tmedia_content_group Contents
*/
typedef struct tmedia_content_plugin_entry_s
{
const char* type;
const tmedia_content_plugin_def_t* plugin;
}
tmedia_content_plugin_entry_t;
/* pointer to all registered contents */
tmedia_content_plugin_entry_t __tmedia_content_plugin_entries[TMEDIA_CONTENT_MAX_PLUGINS][1] = { tsk_null };
int tmedia_content_plugin_register(const char* type, const tmedia_content_plugin_def_t* plugin)
{
tsk_size_t i;
//-- int a = sizeof(__tmedia_content_plugin_entries);
if (!plugin || !plugin){
TSK_DEBUG_ERROR("Invalid parameter");
return -1;
}
/* add or replace the plugin */
for (i = 0; i < TMEDIA_CONTENT_MAX_PLUGINS; i++){
if (!__tmedia_content_plugin_entries[i]->plugin || (__tmedia_content_plugin_entries[i]->plugin == plugin && tsk_striequals(type, __tmedia_content_plugin_entries[i]->type))){
__tmedia_content_plugin_entries[i]->type = type;
__tmedia_content_plugin_entries[i]->plugin = plugin;
return 0;
}
}
TSK_DEBUG_ERROR("There are already %d plugins.", TMEDIA_CONTENT_MAX_PLUGINS);
return -2;
}
int tmedia_content_plugin_unregister(const char* type, const tmedia_content_plugin_def_t* plugin)
{
tsk_size_t i;
tsk_bool_t found = tsk_false;
if (!plugin){
TSK_DEBUG_ERROR("Invalid Parameter");
return -1;
}
/* find the plugin to unregister */
for (i = 0; i < TMEDIA_CONTENT_MAX_PLUGINS && __tmedia_content_plugin_entries[i]->plugin; i++){
if (__tmedia_content_plugin_entries[i]->plugin == plugin && tsk_striequals(type, __tmedia_content_plugin_entries[i]->type)){
__tmedia_content_plugin_entries[i]->type = tsk_null,
__tmedia_content_plugin_entries[i]->plugin = tsk_null;
found = tsk_true;
break;
}
}
/* compact */
if (found){
for (; i < (TMEDIA_CONTENT_MAX_PLUGINS - 1); i++){
if (__tmedia_content_plugin_entries[i + 1]->plugin){
__tmedia_content_plugin_entries[i]->type = __tmedia_content_plugin_entries[i + 1]->type,
__tmedia_content_plugin_entries[i]->plugin = __tmedia_content_plugin_entries[i + 1]->plugin;
}
else{
break;
}
}
__tmedia_content_plugin_entries[i]->type = tsk_null,
__tmedia_content_plugin_entries[i]->plugin = tsk_null;
}
return (found ? 0 : -2);
}
int tmedia_content_plugin_unregister_all()
{
tsk_size_t i;
for (i = 0; i < TMEDIA_CONTENT_MAX_PLUGINS && __tmedia_content_plugin_entries[i]->plugin; i++){
__tmedia_content_plugin_entries[i]->type = tsk_null,
__tmedia_content_plugin_entries[i]->plugin = tsk_null;
}
return 0;
}
tmedia_content_t* tmedia_content_create(const char* type)
{
tmedia_content_t* content = tsk_null;
const tmedia_content_plugin_entry_t* entry;
tsk_size_t i = 0;
while (i < TMEDIA_CONTENT_MAX_PLUGINS){
entry = __tmedia_content_plugin_entries[i];
if (!entry->plugin || !entry->type){
break;
}
if (entry->plugin->objdef && tsk_striequals(entry->type, type)){
if ((content = tsk_object_new(entry->plugin->objdef))){
content->plugin = entry->plugin;
content->type = entry->type;
return content;
}
}
++i;
}
TSK_DEBUG_WARN("Failed to find content type (%s) will be added as dummy", type);
if (tmedia_content_dummy_plugin_def_t){
content = tsk_object_new(tmedia_content_dummy_plugin_def_t->objdef);
content->plugin = tmedia_content_dummy_plugin_def_t;
content->type = type;
}
return content;
}
tmedia_content_t* tmedia_content_parse(const void* data, tsk_size_t size, const char* type)
{
tmedia_content_t* content = tmedia_content_create(type);
if (content){
if (content->plugin->parse){
int ret;
if ((ret = content->plugin->parse(content, data, size))){
TSK_DEBUG_ERROR("Failed to parse the content(%d)", ret);
TSK_OBJECT_SAFE_FREE(content);
return tsk_null;
}
return content;
}
else{
TSK_DEBUG_ERROR("No parser function for this content (%s)", type);
TSK_OBJECT_SAFE_FREE(content);
return tsk_null;
}
}
else{
TSK_DEBUG_ERROR("Failed to to find content(%s)", type);
return tsk_null;
}
}
int tmedia_content_init(tmedia_content_t* self)
{
if (!self || !self->plugin){
TSK_DEBUG_ERROR("Invalid parameter");
return -1;
}
return 0;
}
int tmedia_content_deinit(tmedia_content_t* self)
{
if (!self || !self->plugin){
TSK_DEBUG_ERROR("Invalid parameter");
return -1;
}
return 0;
}
tsk_buffer_t* tmedia_content_get_data(tmedia_content_t* self)
{
if (!self || !self->plugin){
TSK_DEBUG_ERROR("Invalid parameter");
return tsk_null;
}
return self->plugin->get_data(self);
}
static int tmedia_content_dummy_parse(tmedia_content_t* self, const void* in_data, tsk_size_t in_size)
{
tmedia_content_dummy_t *dummy = TMEDIA_CONTENT_DUMMY(self);
if (!dummy || dummy->data){
TSK_DEBUG_ERROR("Invalid parameter");
return -1;
}
dummy->data = tsk_buffer_create(in_data, in_size);
return 0;
}
static tsk_buffer_t* tmedia_content_dummy_get_data(tmedia_content_t* self)
{
return tsk_object_ref(TMEDIA_CONTENT_DUMMY(self)->data);
}
//=================================================================================================
// object/plugin definitions
//
/* constructor */
static tsk_object_t* tmedia_content_dummy_ctor(tsk_object_t * self, va_list * app)
{
tmedia_content_dummy_t *dummy = self;
if (dummy){
/* init base: called by tmedia_content_create() */
/* init self */
}
return self;
}
/* destructor */
static tsk_object_t* tmedia_content_dummy_dtor(tsk_object_t * self)
{
tmedia_content_dummy_t *dummy = self;
if (dummy){
/* deinit base */
tmedia_content_deinit(TMEDIA_CONTENT(dummy));
/* deinit self */
TSK_OBJECT_SAFE_FREE(dummy->data);
}
return self;
}
/* object definition */
static const tsk_object_def_t tmedia_content_dummy_def_s =
{
sizeof(tmedia_content_dummy_t),
tmedia_content_dummy_ctor,
tmedia_content_dummy_dtor,
tsk_null,
};
/* plugin definition*/
static const tmedia_content_plugin_def_t tmedia_content_dummy_plugin_def_s =
{
&tmedia_content_dummy_def_s,
"dummy",
tmedia_content_dummy_parse,
tmedia_content_dummy_get_data
};
const tmedia_content_plugin_def_t *tmedia_content_dummy_plugin_def_t = &tmedia_content_dummy_plugin_def_s;
//=================================================================================================
// media content header
//
tmedia_content_header_t* tmedia_content_header_create(const char* name, const char* value)
{
tmedia_content_header_t* header = tsk_object_new(tmedia_content_header_def_t);
const char* str;
if (!header){
TSK_DEBUG_ERROR("Failed to create new header object");
return tsk_null;
}
header->name = tsk_strdup(name);
if (value && (str = strstr(value, ";"))){
header->value = tsk_strndup(value, (tsk_size_t)(str - value));
header->params = tsk_params_fromstring((str + 1), ";", tsk_true);
}
else{
header->value = tsk_strdup(value);
}
return header;
}
int tmedia_content_header_deinit(tmedia_content_header_t* self)
{
if (!self){
TSK_DEBUG_ERROR("Invalid parameter");
return -1;
}
TSK_FREE(self->name);
TSK_FREE(self->value);
TSK_OBJECT_SAFE_FREE(self->params);
return 0;
}
char* tmedia_content_header_tostring(const tmedia_content_header_t* self)
{
char* string = tsk_null;
if (!self){
TSK_DEBUG_ERROR("Invalid parameter");
return tsk_null;
}
tsk_sprintf(&string, "%s: %s", self->name, self->value);
if (self->params){
const tsk_list_item_t* item;
tsk_list_foreach(item, self->params){
tsk_strcat_2(&string, ";%s=%s", TSK_PARAM(item->data)->name, TSK_PARAM(item->data)->value);
}
}
return string;
}
/* constructor */
static tsk_object_t* tmedia_content_header_ctor(tsk_object_t * self, va_list * app)
{
tmedia_content_header_t *header = self;
if (header){
}
return self;
}
/* destructor */
static tsk_object_t* tmedia_content_header_dtor(tsk_object_t * self)
{
tmedia_content_header_t *header = self;
if (header){
tmedia_content_header_deinit(header);
}
return self;
}
/* object definition */
static const tsk_object_def_t tmedia_content_header_def_s =
{
sizeof(tmedia_content_header_t),
tmedia_content_header_ctor,
tmedia_content_header_dtor,
tsk_null,
};
const tsk_object_def_t *tmedia_content_header_def_t = &tmedia_content_header_def_s; |