* Added additional fields to ast_sdp_options. * Re-organized ast_sdp. * Updated field names to correspond to RFC4566 terminology. * Created allocs/frees for SDP children. * Created getters/setters for SDP children where appropriate. * Added ast_sdp_create_from_state. * Refactored res_sdp_translator_pjmedia for changes. Change-Id: Iefbd877af7f5a4d3c74deead1bff8802661b0d48
565 lines
16 KiB
C
565 lines
16 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_translator.h"
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#include "asterisk/sdp_options.h"
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#include "asterisk/vector.h"
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#include "asterisk/netsock2.h"
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#include "asterisk/utils.h"
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#include "asterisk/config.h"
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#include "asterisk/test.h"
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#include "asterisk/module.h"
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#include "../include/asterisk/sdp.h"
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#ifdef HAVE_PJPROJECT
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#include <pjlib.h>
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#include <pjmedia.h>
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#endif
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/*** MODULEINFO
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<depend>pjproject</depend>
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<support_level>core</support_level>
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***/
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static pj_caching_pool sdp_caching_pool;
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static void *pjmedia_new(void)
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{
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pj_pool_t *pool;
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pool = pj_pool_create(&sdp_caching_pool.factory, "pjmedia sdp translator", 1024, 1024, NULL);
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return pool;
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}
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static void pjmedia_free(void *translator_priv)
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{
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pj_pool_t *pool = translator_priv;
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pj_pool_release(pool);
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}
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#define dupa_pj_str(pjstr) \
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({ \
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char *dest = ast_alloca(pjstr.slen + 1); \
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memcpy(dest, pjstr.ptr, pjstr.slen); \
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dest[pjstr.slen] = '\0'; \
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dest; \
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})
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static struct ast_sdp_m_line *pjmedia_copy_m_line(struct pjmedia_sdp_media *pjmedia_m_line)
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{
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int i;
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struct ast_sdp_c_line *c_line = pjmedia_m_line->conn ?
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ast_sdp_c_alloc(dupa_pj_str(pjmedia_m_line->conn->addr_type),
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dupa_pj_str(pjmedia_m_line->conn->addr)) : NULL;
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struct ast_sdp_m_line *m_line = ast_sdp_m_alloc(dupa_pj_str(pjmedia_m_line->desc.media),
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pjmedia_m_line->desc.port, pjmedia_m_line->desc.port_count,
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dupa_pj_str(pjmedia_m_line->desc.transport), c_line);
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for (i = 0; i < pjmedia_m_line->desc.fmt_count; ++i) {
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ast_sdp_m_add_payload(m_line,
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ast_sdp_payload_alloc(dupa_pj_str(pjmedia_m_line->desc.fmt[i])));
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}
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for (i = 0; i < pjmedia_m_line->attr_count; ++i) {
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ast_sdp_m_add_a(m_line, ast_sdp_a_alloc(dupa_pj_str(pjmedia_m_line->attr[i]->name),
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dupa_pj_str(pjmedia_m_line->attr[i]->value)));
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}
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return m_line;
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}
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static void pjmedia_copy_a_lines(struct ast_sdp *new_sdp, pjmedia_sdp_session *pjmedia_sdp)
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{
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int i;
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for (i = 0; i < pjmedia_sdp->attr_count; ++i) {
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ast_sdp_add_a(new_sdp, ast_sdp_a_alloc(dupa_pj_str(pjmedia_sdp->attr[i]->name),
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dupa_pj_str(pjmedia_sdp->attr[i]->value)));
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}
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}
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static void pjmedia_copy_m_lines(struct ast_sdp *new_sdp,
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struct pjmedia_sdp_session *pjmedia_sdp)
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{
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int i;
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for (i = 0; i < pjmedia_sdp->media_count; ++i) {
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ast_sdp_add_m(new_sdp, pjmedia_copy_m_line(pjmedia_sdp->media[i]));
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}
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}
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static struct ast_sdp *pjmedia_to_sdp(void *in, void *translator_priv)
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{
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struct pjmedia_sdp_session *pjmedia_sdp = in;
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struct ast_sdp_o_line *o_line = ast_sdp_o_alloc(dupa_pj_str(pjmedia_sdp->origin.user),
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pjmedia_sdp->origin.id, pjmedia_sdp->origin.version,
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dupa_pj_str(pjmedia_sdp->origin.addr_type), dupa_pj_str(pjmedia_sdp->origin.addr));
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struct ast_sdp_c_line *c_line = pjmedia_sdp->conn ?
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ast_sdp_c_alloc(dupa_pj_str(pjmedia_sdp->conn->addr_type),
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dupa_pj_str(pjmedia_sdp->conn->addr)) : NULL;
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struct ast_sdp_s_line *s_line = ast_sdp_s_alloc(dupa_pj_str(pjmedia_sdp->name));
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struct ast_sdp_t_line *t_line = ast_sdp_t_alloc(pjmedia_sdp->time.start,
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pjmedia_sdp->time.stop);
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struct ast_sdp *new_sdp = ast_sdp_alloc(o_line, c_line, s_line, t_line);
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pjmedia_copy_a_lines(new_sdp, pjmedia_sdp);
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pjmedia_copy_m_lines(new_sdp, pjmedia_sdp);
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return new_sdp;
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}
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static void copy_o_line_pjmedia(pj_pool_t *pool, pjmedia_sdp_session *pjmedia_sdp,
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struct ast_sdp_o_line *o_line)
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{
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pjmedia_sdp->origin.id = o_line->session_id;
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pjmedia_sdp->origin.version = o_line->session_version;
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pj_strdup2(pool, &pjmedia_sdp->origin.user, o_line->username);
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pj_strdup2(pool, &pjmedia_sdp->origin.addr_type, o_line->address_type);
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pj_strdup2(pool, &pjmedia_sdp->origin.addr, o_line->address);
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pj_strdup2(pool, &pjmedia_sdp->origin.net_type, "IN");
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}
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static void copy_s_line_pjmedia(pj_pool_t *pool, pjmedia_sdp_session *pjmedia_sdp,
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struct ast_sdp_s_line *s_line)
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{
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pj_strdup2(pool, &pjmedia_sdp->name, s_line->session_name);
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}
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static void copy_t_line_pjmedia(pj_pool_t *pool, pjmedia_sdp_session *pjmedia_sdp,
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struct ast_sdp_t_line *t_line)
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{
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pjmedia_sdp->time.start = t_line->start_time;
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pjmedia_sdp->time.stop = t_line->stop_time;
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}
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static void copy_c_line_pjmedia(pj_pool_t *pool, pjmedia_sdp_conn **conn,
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struct ast_sdp_c_line *c_line)
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{
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pjmedia_sdp_conn *local_conn;
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local_conn = PJ_POOL_ZALLOC_T(pool, pjmedia_sdp_conn);
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pj_strdup2(pool, &local_conn->addr_type, c_line->address_type);
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pj_strdup2(pool, &local_conn->addr, c_line->address);
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pj_strdup2(pool, &local_conn->net_type, "IN");
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*conn = local_conn;
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}
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static void copy_a_lines_pjmedia(pj_pool_t *pool, pjmedia_sdp_session *pjmedia_sdp,
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const struct ast_sdp *sdp)
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{
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int i;
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for (i = 0; i < ast_sdp_get_a_count(sdp); ++i) {
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pjmedia_sdp_attr *attr;
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pj_str_t value;
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struct ast_sdp_a_line *a_line;
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a_line = ast_sdp_get_a(sdp, i);
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pj_strdup2(pool, &value, a_line->value);
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attr = pjmedia_sdp_attr_create(pool, a_line->name, &value);
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pjmedia_sdp_session_add_attr(pjmedia_sdp, attr);
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}
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}
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static void copy_a_lines_pjmedia_media(pj_pool_t *pool, pjmedia_sdp_media *media,
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struct ast_sdp_m_line *m_line)
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{
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int i;
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for (i = 0; i < ast_sdp_m_get_a_count(m_line); ++i) {
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pjmedia_sdp_attr *attr;
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pj_str_t value;
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struct ast_sdp_a_line *a_line;
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a_line = ast_sdp_m_get_a(m_line, i);
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pj_strdup2(pool, &value, a_line->value);
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attr = pjmedia_sdp_attr_create(pool, a_line->name, &value);
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pjmedia_sdp_media_add_attr(media, attr);
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}
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}
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static void copy_m_line_pjmedia(pj_pool_t *pool, pjmedia_sdp_media *media,
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struct ast_sdp_m_line *m_line)
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{
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int i;
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media->desc.port = m_line->port;
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media->desc.port_count = m_line->port_count;
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pj_strdup2(pool, &media->desc.transport, m_line->proto);
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pj_strdup2(pool, &media->desc.media, m_line->type);
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for (i = 0; i < ast_sdp_m_get_payload_count(m_line); ++i) {
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pj_strdup2(pool, &media->desc.fmt[i], ast_sdp_m_get_payload(m_line, i)->fmt);
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++media->desc.fmt_count;
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}
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if (m_line->c_line && m_line->c_line->address) {
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copy_c_line_pjmedia(pool, &media->conn, m_line->c_line);
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}
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copy_a_lines_pjmedia_media(pool, media, m_line);
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}
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static void copy_m_lines_pjmedia(pj_pool_t *pool, pjmedia_sdp_session *pjmedia_sdp,
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const struct ast_sdp *sdp)
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{
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int i;
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for (i = 0; i < ast_sdp_get_m_count(sdp); ++i) {
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pjmedia_sdp_media *media;
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media = PJ_POOL_ZALLOC_T(pool, pjmedia_sdp_media);
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copy_m_line_pjmedia(pool, media, ast_sdp_get_m(sdp, i));
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pjmedia_sdp->media[pjmedia_sdp->media_count] = media;
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++pjmedia_sdp->media_count;
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}
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}
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static void *sdp_to_pjmedia(const struct ast_sdp *sdp, void *translator_priv)
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{
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pj_pool_t *pool = translator_priv;
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pjmedia_sdp_session *pjmedia_sdp;
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pjmedia_sdp = PJ_POOL_ZALLOC_T(pool, pjmedia_sdp_session);
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copy_o_line_pjmedia(pool, pjmedia_sdp, sdp->o_line);
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copy_s_line_pjmedia(pool, pjmedia_sdp, sdp->s_line);
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copy_t_line_pjmedia(pool, pjmedia_sdp, sdp->t_line);
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copy_c_line_pjmedia(pool, &pjmedia_sdp->conn, sdp->c_line);
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copy_a_lines_pjmedia(pool, pjmedia_sdp, sdp);
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copy_m_lines_pjmedia(pool, pjmedia_sdp, sdp);
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return pjmedia_sdp;
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}
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static struct ast_sdp_translator_ops pjmedia_translator = {
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.repr = AST_SDP_IMPL_PJMEDIA,
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.translator_new = pjmedia_new,
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.translator_free = pjmedia_free,
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.to_sdp = pjmedia_to_sdp,
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.from_sdp = sdp_to_pjmedia,
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};
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#ifdef TEST_FRAMEWORK
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static int verify_s_line(struct ast_sdp_s_line *s_line, char *expected)
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{
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return strcmp(s_line->session_name, expected) == 0;
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}
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static int verify_c_line(struct ast_sdp_c_line *c_line, char *family, char *addr)
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{
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return strcmp(c_line->address_type, family) == 0 && strcmp(c_line->address, addr) == 0;
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}
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static int verify_t_line(struct ast_sdp_t_line *t_line, uint32_t start, uint32_t end)
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{
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return t_line->start_time == start && t_line->stop_time == end;
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}
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static int verify_m_line(struct ast_sdp *sdp, int index, char *type, int port,
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int port_count, char *profile, ...)
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{
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struct ast_sdp_m_line *m_line;
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int res;
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va_list ap;
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int i;
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m_line = ast_sdp_get_m(sdp, index);
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res = strcmp(m_line->type, type) == 0;
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res |= m_line->port == port;
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res |= m_line->port_count == port_count;
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res |= strcmp(m_line->proto, profile) == 0;
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va_start(ap, profile);
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for (i = 0; i < ast_sdp_m_get_payload_count(m_line); ++i) {
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char *payload;
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payload = va_arg(ap, char *);
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if (!payload) {
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res = -1;
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break;
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}
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res |= strcmp(ast_sdp_m_get_payload(m_line, i)->fmt, payload) == 0;
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}
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va_end(ap);
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return res;
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}
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static int verify_a_line(struct ast_sdp *sdp, int m_index, int a_index, char *name,
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char *value)
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{
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struct ast_sdp_m_line *m_line;
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struct ast_sdp_a_line *a_line;
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m_line = ast_sdp_get_m(sdp, m_index);
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a_line = ast_sdp_m_get_a(m_line, a_index);
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return strcmp(a_line->name, name) == 0 && strcmp(a_line->value, value) == 0;
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}
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AST_TEST_DEFINE(pjmedia_to_sdp_test)
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{
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struct ast_sdp_translator *translator;
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pj_pool_t *pool;
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char *sdp_str =
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"v=0\r\n"
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"o=alice 2890844526 2890844527 IN IP4 host.atlanta.example.com\r\n"
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"s= \r\n"
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"c=IN IP4 host.atlanta.example.com\r\n"
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"t=123 456\r\n"
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"m=audio 49170 RTP/AVP 0 8 97\r\n"
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"a=rtpmap:0 PCMU/8000\r\n"
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"a=rtpmap:8 PCMA/8000\r\n"
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"a=rtpmap:97 iLBC/8000\r\n"
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"a=sendrecv\r\n"
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"m=video 51372 RTP/AVP 31 32\r\n"
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"a=rtpmap:31 H261/90000\r\n"
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"a=rtpmap:32 MPV/90000\r\n";
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pjmedia_sdp_session *pjmedia_sdp;
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struct ast_sdp *sdp = NULL;
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pj_status_t status;
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enum ast_test_result_state res = AST_TEST_PASS;
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switch (cmd) {
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case TEST_INIT:
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info->name = "pjmedia_to_sdp";
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info->category = "/main/sdp/";
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info->summary = "PJMEDIA to SDP unit test";
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info->description =
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"Ensures PJMEDIA SDPs are translated correctly";
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return AST_TEST_NOT_RUN;
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case TEST_EXECUTE:
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break;
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}
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pool = pj_pool_create(&sdp_caching_pool.factory, "pjmedia to sdp test", 1024, 1024, NULL);
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translator = ast_sdp_translator_new(AST_SDP_IMPL_PJMEDIA);
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if (!translator) {
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ast_test_status_update(test, "Failed to create SDP translator\n");
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res = AST_TEST_FAIL;
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goto cleanup;
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}
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status = pjmedia_sdp_parse(pool, sdp_str, strlen(sdp_str), &pjmedia_sdp);
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if (status != PJ_SUCCESS) {
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ast_test_status_update(test, "Error parsing SDP\n");
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res = AST_TEST_FAIL;
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goto cleanup;
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}
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sdp = ast_sdp_translator_to_sdp(translator, pjmedia_sdp);
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if (strcmp(sdp->o_line->username, "alice")) {
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ast_test_status_update(test, "Unexpected SDP user '%s'\n", sdp->o_line->username);
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res = AST_TEST_FAIL;
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goto cleanup;
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} else if (sdp->o_line->session_id != 2890844526UL) {
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ast_test_status_update(test, "Unexpected SDP id '%" PRId64 "lu'\n", sdp->o_line->session_id);
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res = AST_TEST_FAIL;
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goto cleanup;
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} else if (sdp->o_line->session_version != 2890844527UL) {
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ast_test_status_update(test, "Unexpected SDP version '%" PRId64 "'\n", sdp->o_line->session_version);
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res = AST_TEST_FAIL;
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goto cleanup;
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} else if (strcmp(sdp->o_line->address_type, "IP4")) {
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ast_test_status_update(test, "Unexpected address family '%s'\n", sdp->o_line->address_type);
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res = AST_TEST_FAIL;
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goto cleanup;
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} else if (strcmp(sdp->o_line->address, "host.atlanta.example.com")) {
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ast_test_status_update(test, "Unexpected address '%s'\n", sdp->o_line->address);
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res = AST_TEST_FAIL;
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goto cleanup;
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}
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if (!verify_s_line(sdp->s_line, " ")) {
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ast_test_status_update(test, "Bad s line\n");
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res = AST_TEST_FAIL;
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goto cleanup;
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} else if (!verify_c_line(sdp->c_line, "IP4", "host.atlanta.example.com")) {
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ast_test_status_update(test, "Bad c line\n");
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res = AST_TEST_FAIL;
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goto cleanup;
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} else if (!verify_t_line(sdp->t_line, 123, 456)) {
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ast_test_status_update(test, "Bad t line\n");
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res = AST_TEST_FAIL;
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goto cleanup;
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}
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if (!verify_m_line(sdp, 0, "audio", 49170, 1, "RTP/AVP", "0", "8", "97", NULL)) {
|
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ast_test_status_update(test, "Bad m line 1\n");
|
|
res = AST_TEST_FAIL;
|
|
goto cleanup;
|
|
} else if (!verify_a_line(sdp, 0, 0, "rtpmap", "0 PCMU/8000")) {
|
|
ast_test_status_update(test, "Bad a line 1\n");
|
|
res = AST_TEST_FAIL;
|
|
goto cleanup;
|
|
} else if (!verify_a_line(sdp, 0, 1, "rtpmap", "8 PCMA/8000")) {
|
|
ast_test_status_update(test, "Bad a line 2\n");
|
|
res = AST_TEST_FAIL;
|
|
goto cleanup;
|
|
} else if (!verify_a_line(sdp, 0, 2, "rtpmap", "97 iLBC/8000")) {
|
|
ast_test_status_update(test, "Bad a line 3\n");
|
|
res = AST_TEST_FAIL;
|
|
goto cleanup;
|
|
} else if (!verify_a_line(sdp, 0, 3, "sendrecv", "")) {
|
|
ast_test_status_update(test, "Bad a line 3\n");
|
|
res = AST_TEST_FAIL;
|
|
goto cleanup;
|
|
} else if (!verify_m_line(sdp, 1, "video", 51372, 1, "RTP/AVP", "31", "32", NULL)) {
|
|
ast_test_status_update(test, "Bad m line 2\n");
|
|
res = AST_TEST_FAIL;
|
|
goto cleanup;
|
|
} else if (!verify_a_line(sdp, 1, 0, "rtpmap", "31 H261/90000")) {
|
|
ast_test_status_update(test, "Bad a line 4\n");
|
|
res = AST_TEST_FAIL;
|
|
goto cleanup;
|
|
} else if (!verify_a_line(sdp, 1, 1, "rtpmap", "32 MPV/90000")) {
|
|
ast_test_status_update(test, "Bad a line 5\n");
|
|
res = AST_TEST_FAIL;
|
|
goto cleanup;
|
|
}
|
|
|
|
cleanup:
|
|
ast_sdp_free(sdp);
|
|
ast_sdp_translator_free(translator);
|
|
pj_pool_release(pool);
|
|
return res;
|
|
}
|
|
|
|
AST_TEST_DEFINE(sdp_to_pjmedia_test)
|
|
{
|
|
struct ast_sdp_translator *translator;
|
|
char *sdp_str =
|
|
"v=0\r\n"
|
|
"o=alice 2890844526 2890844526 IN IP4 host.atlanta.example.com\r\n"
|
|
"s= \r\n"
|
|
"c=IN IP4 host.atlanta.example.com\r\n"
|
|
"t=123 456\r\n"
|
|
"m=audio 49170 RTP/AVP 0 8 97\r\n"
|
|
"a=rtpmap:0 PCMU/8000\r\n"
|
|
"a=rtpmap:8 PCMA/8000\r\n"
|
|
"a=rtpmap:97 iLBC/8000\r\n"
|
|
"a=sendrecv\r\n"
|
|
"m=video 51372 RTP/AVP 31 32\r\n"
|
|
"a=rtpmap:31 H261/90000\r\n"
|
|
"a=rtpmap:32 MPV/90000\r\n\r\n";
|
|
pj_pool_t *pool;
|
|
pjmedia_sdp_session *pjmedia_sdp_orig;
|
|
pjmedia_sdp_session *pjmedia_sdp_dup;
|
|
struct ast_sdp *sdp = NULL;
|
|
pj_status_t status;
|
|
enum ast_test_result_state res = AST_TEST_PASS;
|
|
char buf[2048];
|
|
char errbuf[256];
|
|
|
|
switch (cmd) {
|
|
case TEST_INIT:
|
|
info->name = "sdp_to_pjmedia";
|
|
info->category = "/main/sdp/";
|
|
info->summary = "SDP to PJMEDIA unit test";
|
|
info->description =
|
|
"Ensures PJMEDIA SDPs are translated correctly";
|
|
return AST_TEST_NOT_RUN;
|
|
case TEST_EXECUTE:
|
|
break;
|
|
}
|
|
|
|
pool = pj_pool_create(&sdp_caching_pool.factory, "pjmedia to sdp test", 1024, 1024, NULL);
|
|
|
|
translator = ast_sdp_translator_new(AST_SDP_IMPL_PJMEDIA);
|
|
if (!translator) {
|
|
ast_test_status_update(test, "Failed to create SDP translator\n");
|
|
res = AST_TEST_FAIL;
|
|
goto cleanup;
|
|
}
|
|
|
|
status = pjmedia_sdp_parse(pool, sdp_str, strlen(sdp_str), &pjmedia_sdp_orig);
|
|
if (status != PJ_SUCCESS) {
|
|
ast_test_status_update(test, "Error parsing SDP\n");
|
|
res = AST_TEST_FAIL;
|
|
goto cleanup;
|
|
}
|
|
|
|
sdp = ast_sdp_translator_to_sdp(translator, pjmedia_sdp_orig);
|
|
pjmedia_sdp_dup = ast_sdp_translator_from_sdp(translator, sdp);
|
|
|
|
if ((status = pjmedia_sdp_session_cmp(pjmedia_sdp_orig, pjmedia_sdp_dup, 0)) != PJ_SUCCESS) {
|
|
ast_test_status_update(test, "SDPs aren't equal\n");
|
|
pjmedia_sdp_print(pjmedia_sdp_orig, buf, sizeof(buf));
|
|
ast_test_status_update(test, "Original SDP is %s\n", buf);
|
|
pjmedia_sdp_print(pjmedia_sdp_dup, buf, sizeof(buf));
|
|
ast_test_status_update(test, "New SDP is %s\n", buf);
|
|
pjmedia_strerror(status, errbuf, sizeof(errbuf));
|
|
ast_test_status_update(test, "PJMEDIA says %d: '%s'\n", status, errbuf);
|
|
res = AST_TEST_FAIL;
|
|
goto cleanup;
|
|
}
|
|
|
|
cleanup:
|
|
ast_sdp_free(sdp);
|
|
ast_sdp_translator_free(translator);
|
|
pj_pool_release(pool);
|
|
return res;
|
|
}
|
|
|
|
#endif /* TEST_FRAMEWORK */
|
|
|
|
static int load_module(void)
|
|
{
|
|
if (ast_sdp_register_translator(&pjmedia_translator)) {
|
|
return AST_MODULE_LOAD_DECLINE;
|
|
}
|
|
pj_caching_pool_init(&sdp_caching_pool, NULL, 1024 * 1024);
|
|
AST_TEST_REGISTER(pjmedia_to_sdp_test);
|
|
AST_TEST_REGISTER(sdp_to_pjmedia_test);
|
|
|
|
return AST_MODULE_LOAD_SUCCESS;
|
|
}
|
|
|
|
static int unload_module(void)
|
|
{
|
|
ast_sdp_unregister_translator(&pjmedia_translator);
|
|
pj_caching_pool_destroy(&sdp_caching_pool);
|
|
AST_TEST_UNREGISTER(pjmedia_to_sdp_test);
|
|
AST_TEST_REGISTER(sdp_to_pjmedia_test);
|
|
return 0;
|
|
}
|
|
|
|
static int reload_module(void)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
AST_MODULE_INFO(ASTERISK_GPL_KEY, AST_MODFLAG_LOAD_ORDER, "PJMEDIA SDP Translator",
|
|
.support_level = AST_MODULE_SUPPORT_CORE,
|
|
.load = load_module,
|
|
.unload = unload_module,
|
|
.reload = reload_module,
|
|
.load_pri = AST_MODPRI_CHANNEL_DEPEND,
|
|
);
|