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/*
* Asterisk -- An open source telephony toolkit.
*
* Copyright (C) 2017, Digium, Inc.
*
* Mark Michelson <mmichelson@digium.com>
*
* See http://www.asterisk.org for more information about
* the Asterisk project. Please do not directly contact
* any of the maintainers of this project for assistance;
* the project provides a web site, mailing lists and IRC
* channels for your use.
*
* This program is free software, distributed under the terms of
* the GNU General Public License Version 2. See the LICENSE file
* at the top of the source tree.
*/
#include "asterisk.h"
#include "asterisk/sdp_options.h"
#include "asterisk/sdp_translator.h"
#include "asterisk/logger.h"
#include "asterisk/utils.h"
#include "asterisk/lock.h"
AST_RWLOCK_DEFINE_STATIC(registered_ops_lock);
static struct ast_sdp_translator_ops *registered_ops[AST_SDP_IMPL_END];
int ast_sdp_register_translator(struct ast_sdp_translator_ops *ops)
{
SCOPED_WRLOCK(lock, ®istered_ops_lock);
if (ops->repr >= AST_SDP_IMPL_END) {
ast_log(LOG_ERROR, "SDP translator has unrecognized representation\n");
return -1;
}
if (registered_ops[ops->repr] != NULL) {
ast_log(LOG_ERROR, "SDP_translator with this representation already registered\n");
return -1;
}
registered_ops[ops->repr] = ops;
ast_log(LOG_NOTICE, "Placed ops %p at slot %d\n", ops, ops->repr);
return 0;
}
void ast_sdp_unregister_translator(struct ast_sdp_translator_ops *ops)
{
SCOPED_WRLOCK(lock, ®istered_ops_lock);
if (ops->repr >= AST_SDP_IMPL_END) {
return;
}
registered_ops[ops->repr] = NULL;
}
struct ast_sdp_translator *ast_sdp_translator_new(enum ast_sdp_options_impl repr)
{
struct ast_sdp_translator *translator;
SCOPED_RDLOCK(lock, ®istered_ops_lock);
if (registered_ops[repr] == NULL) {
ast_log(LOG_NOTICE, "No registered SDP translator with representation %d\n", repr);
return NULL;
}
translator = ast_calloc(1, sizeof(*translator));
if (!translator) {
return NULL;
}
translator->ops = registered_ops[repr];
translator->translator_priv = translator->ops->translator_new();
if (!translator->translator_priv) {
ast_free(translator);
return NULL;
}
return translator;
}
void ast_sdp_translator_free(struct ast_sdp_translator *translator)
{
if (!translator) {
return;
}
translator->ops->translator_free(translator->translator_priv);
ast_free(translator);
}
struct ast_sdp *ast_sdp_translator_to_sdp(struct ast_sdp_translator *translator,
const void *native_sdp)
{
return translator->ops->to_sdp(native_sdp, translator->translator_priv);
}
const void *ast_sdp_translator_from_sdp(struct ast_sdp_translator *translator,
const struct ast_sdp *ast_sdp)
{
return translator->ops->from_sdp(ast_sdp, translator->translator_priv);
}
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