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19a79ae12c
This change adds a T.38 format which can be used in a stream topology to specify that a UDPTL stream needs to be created. The SDP API has been changed to understand T.38 and create the UDPTL session, add the attributes, and parse the attributes. This change does not change the boundary of the T.38 state machine. It is still up to the channel driver to implement and act on it (such as queueing control frames or reacting to them). ASTERISK-26949 Change-Id: If28956762ccb8ead562ac6c03d162d3d6014f2c7
111 lines
3.5 KiB
C
111 lines
3.5 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/utils.h"
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#include "asterisk/sdp_options.h"
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#include "sdp_private.h"
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#define DEFAULT_ICE AST_SDP_ICE_DISABLED
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#define DEFAULT_TELEPHONE_EVENT 0
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#define DEFAULT_IMPL AST_SDP_IMPL_STRING
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#define DEFAULT_ENCRYPTION AST_SDP_ENCRYPTION_DISABLED
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#define DEFINE_STRINGFIELD_GETTERS_SETTERS_FOR(field, assert_on_null) \
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void ast_sdp_options_set_##field(struct ast_sdp_options *options, const char *value) \
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{ \
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ast_assert(options != NULL); \
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if ((assert_on_null)) ast_assert(!ast_strlen_zero(value)); \
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if (!strcmp(value, options->field)) return; \
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ast_string_field_set(options, field, value); \
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} \
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const char *ast_sdp_options_get_##field(const struct ast_sdp_options *options) \
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{ \
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ast_assert(options != NULL); \
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return options->field; \
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} \
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#define DEFINE_GETTERS_SETTERS_FOR(type, field) \
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void ast_sdp_options_set_##field(struct ast_sdp_options *options, type value) \
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{ \
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ast_assert(options != NULL); \
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options->field = value; \
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} \
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type ast_sdp_options_get_##field(const struct ast_sdp_options *options) \
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{ \
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ast_assert(options != NULL); \
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return options->field; \
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} \
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DEFINE_STRINGFIELD_GETTERS_SETTERS_FOR(media_address, 0);
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DEFINE_STRINGFIELD_GETTERS_SETTERS_FOR(sdpowner, 0);
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DEFINE_STRINGFIELD_GETTERS_SETTERS_FOR(sdpsession, 0);
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DEFINE_STRINGFIELD_GETTERS_SETTERS_FOR(rtp_engine, 0);
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DEFINE_GETTERS_SETTERS_FOR(unsigned int, bind_rtp_to_media_address);
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DEFINE_GETTERS_SETTERS_FOR(unsigned int, bind_udptl_to_media_address);
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DEFINE_GETTERS_SETTERS_FOR(unsigned int, rtp_symmetric);
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DEFINE_GETTERS_SETTERS_FOR(unsigned int, udptl_symmetric);
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DEFINE_GETTERS_SETTERS_FOR(enum ast_t38_ec_modes, udptl_error_correction);
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DEFINE_GETTERS_SETTERS_FOR(unsigned int, udptl_far_max_datagram);
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DEFINE_GETTERS_SETTERS_FOR(unsigned int, telephone_event);
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DEFINE_GETTERS_SETTERS_FOR(unsigned int, rtp_ipv6);
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DEFINE_GETTERS_SETTERS_FOR(unsigned int, g726_non_standard);
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DEFINE_GETTERS_SETTERS_FOR(unsigned int, rtcp_mux);
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DEFINE_GETTERS_SETTERS_FOR(unsigned int, tos_audio);
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DEFINE_GETTERS_SETTERS_FOR(unsigned int, cos_audio);
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DEFINE_GETTERS_SETTERS_FOR(unsigned int, tos_video);
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DEFINE_GETTERS_SETTERS_FOR(unsigned int, cos_video);
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DEFINE_GETTERS_SETTERS_FOR(enum ast_sdp_options_ice, ice);
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DEFINE_GETTERS_SETTERS_FOR(enum ast_sdp_options_impl, impl);
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DEFINE_GETTERS_SETTERS_FOR(enum ast_sdp_options_encryption, encryption);
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static void set_defaults(struct ast_sdp_options *options)
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{
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options->ice = DEFAULT_ICE;
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options->telephone_event = DEFAULT_TELEPHONE_EVENT;
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options->impl = DEFAULT_IMPL;
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options->encryption = DEFAULT_ENCRYPTION;
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}
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struct ast_sdp_options *ast_sdp_options_alloc(void)
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{
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struct ast_sdp_options *options;
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options = ast_calloc(1, sizeof(*options));
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if (!options) {
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return NULL;
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}
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if (ast_string_field_init(options, 256)) {
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ast_free(options);
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return NULL;
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}
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set_defaults(options);
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return options;
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}
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void ast_sdp_options_free(struct ast_sdp_options *options)
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{
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ast_string_field_free_memory(options);
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ast_free(options);
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}
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