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75 lines
1.9 KiB
C
75 lines
1.9 KiB
C
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/*
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* Asterisk -- An open source telephony toolkit.
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*
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* Copyright (C) 2016, Digium, Inc.
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*
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* Jason Parker <jparker@sangoma.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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/*** MODULEINFO
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<support_level>core</support_level>
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***/
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#include "asterisk.h"
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#include "asterisk/module.h"
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#include "asterisk/format.h"
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/* Destroy is a required callback and must exist */
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static void g729_destroy(struct ast_format *format)
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{
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}
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/* Clone is a required callback and must exist */
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static int g729_clone(const struct ast_format *src, struct ast_format *dst)
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{
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return 0;
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}
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static void g729_generate_sdp_fmtp(const struct ast_format *format, unsigned int payload, struct ast_str **str)
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{
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/*
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* According to the rfc the joint annexb format parameter should be set to 'yes'
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* or 'no' based on the answerer (rfc7261 - 3.3). However, Asterisk being a B2BUA
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* makes things tricky. So for now Asterisk will set annexb=no.
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*/
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ast_str_append(str, 0, "a=fmtp:%u annexb=no\r\n", payload);
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}
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static struct ast_format_interface g729_interface = {
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.format_destroy = g729_destroy,
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.format_clone = g729_clone,
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.format_generate_sdp_fmtp = g729_generate_sdp_fmtp,
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};
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static int load_module(void)
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{
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if (ast_format_interface_register("g729", &g729_interface)) {
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return AST_MODULE_LOAD_DECLINE;
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}
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return AST_MODULE_LOAD_SUCCESS;
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}
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static int unload_module(void)
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{
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return 0;
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}
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AST_MODULE_INFO(ASTERISK_GPL_KEY, AST_MODFLAG_LOAD_ORDER, "G.729 Format Attribute Module",
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.support_level = AST_MODULE_SUPPORT_CORE,
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.load = load_module,
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.unload = unload_module,
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.load_pri = AST_MODPRI_CHANNEL_DEPEND,
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);
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