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