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Add SDP translator and PJMEDIA implementation.

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This creates the following:
* Asterisk's internal representation of an SDP
* An API for translating SDPs from one format to another
* An implementation of a translator for PJMEDIA

Change-Id: Ie2ecd3cbebe76756577be9b133e84d2ee356d46b
changes/61/4961/3
Mark Michelson 8 years ago
parent 8af6342555
commit 5a130b2e17
6 changed files with 1021 additions and 0 deletions
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2
include/asterisk/sdp_options.h
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@ -108,6 +108,8 @@ enum ast_sdp_options_repr {
AST_SDP_REPR_STRING,
/*! SDP is represented as a pjmedia_sdp_session */
AST_SDP_REPR_PJMEDIA,
/*! End of the list */
AST_SDP_REPR_END,
};
/*!

130
include/asterisk/sdp_priv.h
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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.
*/
/* NOTE: It is unlikely that you need to include this file. You probably will only need
* this if you are an SDP translator, or if you are an inner part of the SDP API
*/
#ifndef _SDP_PRIV_H
#define _SDP_PRIV_H
#include "asterisk/vector.h"
/*!
* \brief Structure representing an SDP attribute
*/
struct ast_sdp_a_line {
/*! Attribute name */
char *name;
/*! Attribute value. For attributes that have no value, this will be an empty string */
char *value;
};
/*!
* \brief Structure representing an SDP connection
*/
struct ast_sdp_c_line {
/* IP family string (e.g. IP4 or IP6) */
char *family;
/* Connection address. Can be an IP address or FQDN */
char *addr;
};
/*!
* \brief A collection of SDP attributes
*/
AST_VECTOR(ast_sdp_a_line_vector, struct ast_sdp_a_line);
/*!
* \brief An SDP media stream
*
* This contains both the m line, as well as its
* constituent a lines.
*/
struct ast_sdp_m_line {
/*! Media type (e.g. "audio" or "video") */
char *type;
/*! Port number in m line */
uint16_t port;
/*! Number of ports specified in m line */
uint16_t port_count;
/*! RTP profile string (e.g. "RTP/AVP") */
char *profile;
/*! RTP payloads */
AST_VECTOR(, char *) payloads;
/*! Connection information for this media stream */
struct ast_sdp_c_line c_line;
/*! The attributes for this media stream */
struct ast_sdp_a_line_vector a_lines;
};
/*!
* \brief SDP time information
*/
struct ast_sdp_t_line {
/*! Session start time */
uint32_t start;
/*! Session end time */
uint32_t end;
};
/*!
* \brief An SDP
*/
struct ast_sdp {
/*! SDP Origin line */
struct {
/*! Origin user name */
char *user;
/*! Origin id */
uint32_t id;
/*! Origin version */
uint32_t version;
/*! Origin IP address family (e.g. "IP4" or "IP6") */
char *family;
/*! Origin address. Can be an IP address or FQDN */
char *addr;
} o_line;
/*! SDP Session name */
char *s_line;
/*! SDP top-level connection information */
struct ast_sdp_c_line c_line;
/*! SDP timing information */
struct ast_sdp_t_line t_line;
/*! SDP top-level attributes */
struct ast_sdp_a_line_vector a_lines;
/*! SDP media streams */
AST_VECTOR(, struct ast_sdp_m_line) m_lines;
};
/*!
* \brief Allocate a new SDP.
*
* \note This does not perform any initialization.
*
* \retval NULL FAIL
* \retval non-NULL New SDP
*/
struct ast_sdp *ast_sdp_alloc(void);
/*!
* \brief Free an SDP and all its constituent parts
*/
void ast_sdp_free(struct ast_sdp *dead);
#endif /* _SDP_PRIV_H */

102
include/asterisk/sdp_translator.h
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@ -0,0 +1,102 @@
/*
* 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.
*/
#ifndef _ASTERISK_SDP_TRANSLATOR_H
#define _ASTERISK_SDP_TRANSLATOR_H
#include "asterisk/sdp_options.h"
struct sdp;
/*!
* \brief SDP translator operations
*/
struct ast_sdp_translator_ops {
/*! The SDP representation on which this translator operates */
enum ast_sdp_options_repr repr;
/*! Allocate new translator private data for a translator */
void *(*translator_new)(void);
/*! Free translator private data */
void (*translator_free)(void *translator_priv);
/*! Convert the channel-native SDP into an internal Asterisk SDP */
struct ast_sdp *(*to_sdp)(void *repr_sdp, void *translator_priv);
/*! Convert an internal Asterisk SDP into a channel-native SDP */
void *(*from_sdp)(struct ast_sdp *sdp, void *translator_priv);
};
/*!
* \brief An SDP translator
*
* An SDP translator is responsible for converting between Asterisk's internal
* representation of an SDP and the representation that is native to the channel
* driver. Translators are allocated per-use.
*/
struct ast_sdp_translator {
/*! The operations this translator uses */
struct ast_sdp_translator_ops *ops;
/*! Private data this translator uses */
void *translator_priv;
};
/*!
* \brief Register an SDP translator
* \param ops The SDP operations defined by this translator
* \retval 0 Success
* \retval -1 FAIL
*/
int ast_sdp_register_translator(struct ast_sdp_translator_ops *ops);
/*!
* \brief Unregister an SDP translator
*/
void ast_sdp_unregister_translator(struct ast_sdp_translator_ops *ops);
/*!
* \brief Allocate a new SDP translator
* \param Representation corresponding to the translator_ops to use
* \retval NULL FAIL
* \retval non-NULL New SDP translator
*/
struct ast_sdp_translator *ast_sdp_translator_new(enum ast_sdp_options_repr repr);
/*!
* \brief Free an SDP translator
*/
void ast_sdp_translator_free(struct ast_sdp_translator *translator);
/*!
* \brief Translate a native SDP to internal Asterisk SDP
*
* \param translator The translator to use when translating
* \param native_sdp The SDP from the channel driver
* \retval NULL FAIL
* \retval Non-NULL The translated SDP
*/
struct ast_sdp *ast_sdp_translator_to_sdp(struct ast_sdp_translator *translator, void *native_sdp);
/*!
* \brief Translate an internal Asterisk SDP to a native SDP
*
* \param translator The translator to use when translating
* \param ast_sdp The Asterisk SDP to translate
* \retval NULL FAIL
* \retval non-NULL The translated SDP
*/
void *ast_sdp_translator_from_sdp(struct ast_sdp_translator *translator, struct ast_sdp *ast_sdp);
#endif /* _ASTERISK_SDP_TRANSLATOR_H */

111
main/sdp_repr.c
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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_priv.h"
#include "asterisk/utils.h"
struct ast_sdp *ast_sdp_alloc(void)
{
struct ast_sdp *new_sdp;
new_sdp = ast_calloc(1, sizeof *new_sdp);
return new_sdp;
}
static void free_o_line(struct ast_sdp *dead)
{
ast_free(dead->o_line.user);
ast_free(dead->o_line.family);
ast_free(dead->o_line.addr);
}
static void free_s_line(struct ast_sdp *dead)
{
ast_free(dead->s_line);
}
static void free_c_line(struct ast_sdp_c_line *c_line)
{
ast_free(c_line->family);
ast_free(c_line->addr);
}
static void free_t_line(struct ast_sdp_t_line *t_line)
{
return;
}
static void free_a_line(struct ast_sdp_a_line *a_line)
{
ast_free(a_line->name);
ast_free(a_line->value);
}
static void free_a_lines(struct ast_sdp_a_line_vector *a_lines)
{
int i;
for (i = 0; i < AST_VECTOR_SIZE(a_lines); ++i) {
free_a_line(AST_VECTOR_GET_ADDR(a_lines, i));
}
AST_VECTOR_FREE(a_lines);
}
static void free_m_line(struct ast_sdp_m_line *m_line)
{
int i;
ast_free(m_line->type);
ast_free(m_line->profile);
free_c_line(&m_line->c_line);
for (i = 0; i < AST_VECTOR_SIZE(&m_line->payloads); ++i) {
ast_free(AST_VECTOR_GET(&m_line->payloads, i));
}
AST_VECTOR_FREE(&m_line->payloads);
free_a_lines(&m_line->a_lines);
}
static void free_m_lines(struct ast_sdp *dead)
{
int i;
for (i = 0; i < AST_VECTOR_SIZE(&dead->m_lines); ++i) {
free_m_line(AST_VECTOR_GET_ADDR(&dead->m_lines, i));
}
AST_VECTOR_FREE(&dead->m_lines);
}
void ast_sdp_free(struct ast_sdp *dead)
{
if (!dead) {
return;
}
free_o_line(dead);
free_s_line(dead);
free_c_line(&dead->c_line);
free_t_line(&dead->t_line);
free_a_lines(&dead->a_lines);
free_m_lines(dead);
ast_free(dead);
}

99
main/sdp_translator.c
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@ -0,0 +1,99 @@
/*
* 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_REPR_END];
int ast_sdp_register_translator(struct ast_sdp_translator_ops *ops)
{
SCOPED_WRLOCK(lock, &registered_ops_lock);
if (ops->repr >= AST_SDP_REPR_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, &registered_ops_lock);
if (ops->repr >= AST_SDP_REPR_END) {
return;
}
registered_ops[ops->repr] = NULL;
}
struct ast_sdp_translator *ast_sdp_translator_new(enum ast_sdp_options_repr repr)
{
struct ast_sdp_translator *translator;
SCOPED_RDLOCK(lock, &registered_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)
{
translator->ops->translator_free(translator->translator_priv);
ast_free(translator);
}
struct ast_sdp *ast_sdp_translator_to_sdp(struct ast_sdp_translator *translator, void *native_sdp)
{
return translator->ops->to_sdp(native_sdp, translator->translator_priv);
}
void *ast_sdp_translator_from_sdp(struct ast_sdp_translator *translator, struct ast_sdp *ast_sdp)
{
return translator->ops->from_sdp(ast_sdp, translator->translator_priv);
}

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res/res_sdp_translator_pjmedia.c
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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_translator.h"
#include "asterisk/sdp_options.h"
#include "asterisk/sdp_priv.h"
#include "asterisk/vector.h"
#include "asterisk/netsock2.h"
#include "asterisk/utils.h"
#include "asterisk/config.h"
#include "asterisk/test.h"
#include "asterisk/module.h"
#ifdef HAVE_PJPROJECT
#include <pjlib.h>
#include <pjmedia.h>
#endif
/*** MODULEINFO
<depend>pjproject</depend>
<support_level>core</support_level>
***/
static pj_caching_pool sdp_caching_pool;
static void *pjmedia_new(void)
{
pj_pool_t *pool;
pool = pj_pool_create(&sdp_caching_pool.factory, "pjmedia sdp translator", 1024, 1024, NULL);
return pool;
}
static void pjmedia_free(void *translator_priv)
{
pj_pool_t *pool = translator_priv;
pj_pool_release(pool);
}
static void copy_pj_str(char *dest, const pj_str_t *src, size_t size)
{
memcpy(dest, pj_strbuf(src), size);
dest[size] = '\0';
}
static void dup_pj_str(char **dest, const pj_str_t *src)
{
*dest = ast_malloc(pj_strlen(src) + 1);
copy_pj_str(*dest, src, pj_strlen(src));
}
static void pjmedia_copy_o_line(struct ast_sdp *new_sdp, struct pjmedia_sdp_session * pjmedia_sdp)
{
dup_pj_str(&new_sdp->o_line.user, &pjmedia_sdp->origin.user);
new_sdp->o_line.id = pjmedia_sdp->origin.id;
new_sdp->o_line.version = pjmedia_sdp->origin.version;
dup_pj_str(&new_sdp->o_line.family, &pjmedia_sdp->origin.addr_type);
dup_pj_str(&new_sdp->o_line.addr, &pjmedia_sdp->origin.addr);
}
static void pjmedia_copy_s_line(struct ast_sdp *new_sdp, struct pjmedia_sdp_session *pjmedia_sdp)
{
dup_pj_str(&new_sdp->s_line, &pjmedia_sdp->name);
}
static void pjmedia_copy_t_line(struct ast_sdp_t_line *new_t_line, struct pjmedia_sdp_session *pjmedia_sdp)
{
new_t_line->start = pjmedia_sdp->time.start;
new_t_line->end = pjmedia_sdp->time.stop;
}
static void pjmedia_copy_c_line(struct ast_sdp_c_line *new_c_line, struct pjmedia_sdp_conn *conn)
{
/* It's perfectly reasonable for a c line not to be present, especially within a media description */
if (!conn) {
return;
}
dup_pj_str(&new_c_line->family, &conn->addr_type);
dup_pj_str(&new_c_line->addr, &conn->addr);
}
static void pjmedia_copy_m_line(struct ast_sdp_m_line *new_m_line, struct pjmedia_sdp_media *pjmedia_m_line)
{
int i;
dup_pj_str(&new_m_line->type, &pjmedia_m_line->desc.media);
new_m_line->port = pjmedia_m_line->desc.port;
new_m_line->port_count = pjmedia_m_line->desc.port_count;
dup_pj_str(&new_m_line->profile, &pjmedia_m_line->desc.transport);
pjmedia_copy_c_line(&new_m_line->c_line, pjmedia_m_line->conn);
AST_VECTOR_INIT(&new_m_line->payloads, pjmedia_m_line->desc.fmt_count);
for (i = 0; i < pjmedia_m_line->desc.fmt_count; ++i) {
++new_m_line->payloads.current;
dup_pj_str(AST_VECTOR_GET_ADDR(&new_m_line->payloads, i), &pjmedia_m_line->desc.fmt[i]);
}
}
static void pjmedia_copy_a_lines(struct ast_sdp_a_line_vector *new_a_lines, pjmedia_sdp_attr **attr, unsigned int attr_count)
{
int i;
AST_VECTOR_INIT(new_a_lines, attr_count);
for (i = 0; i < attr_count; ++i) {
struct ast_sdp_a_line *a_line;
++new_a_lines->current;
a_line = AST_VECTOR_GET_ADDR(new_a_lines, i);
dup_pj_str(&a_line->name, &attr[i]->name);
dup_pj_str(&a_line->value, &attr[i]->value);
}
}
static void pjmedia_copy_m_lines(struct ast_sdp *new_sdp, struct pjmedia_sdp_session *pjmedia_sdp)
{
int i;
AST_VECTOR_INIT(&new_sdp->m_lines, pjmedia_sdp->media_count);
for (i = 0; i < pjmedia_sdp->media_count; ++i) {
++new_sdp->m_lines.current;
pjmedia_copy_m_line(AST_VECTOR_GET_ADDR(&new_sdp->m_lines, i), pjmedia_sdp->media[i]);
pjmedia_copy_a_lines(&AST_VECTOR_GET_ADDR(&new_sdp->m_lines, i)->a_lines, pjmedia_sdp->media[i]->attr, pjmedia_sdp->media[i]->attr_count);
}
}
static struct ast_sdp *pjmedia_to_sdp(void *in, void *translator_priv)
{
struct pjmedia_sdp_session *pjmedia_sdp = in;
struct ast_sdp *new_sdp = ast_sdp_alloc();
pjmedia_copy_o_line(new_sdp, pjmedia_sdp);
pjmedia_copy_s_line(new_sdp, pjmedia_sdp);
pjmedia_copy_t_line(&new_sdp->t_line, pjmedia_sdp);
pjmedia_copy_c_line(&new_sdp->c_line, pjmedia_sdp->conn);
pjmedia_copy_a_lines(&new_sdp->a_lines, pjmedia_sdp->attr, pjmedia_sdp->attr_count);
pjmedia_copy_m_lines(new_sdp, pjmedia_sdp);
return new_sdp;
}
static void copy_o_line_pjmedia(pj_pool_t *pool, pjmedia_sdp_session *pjmedia_sdp, struct ast_sdp *sdp)
{
pjmedia_sdp->origin.id = sdp->o_line.id;
pjmedia_sdp->origin.version = sdp->o_line.version;
pj_strdup2(pool, &pjmedia_sdp->origin.user, sdp->o_line.user);
pj_strdup2(pool, &pjmedia_sdp->origin.addr_type, sdp->o_line.family);
pj_strdup2(pool, &pjmedia_sdp->origin.addr, sdp->o_line.addr);
pj_strdup2(pool, &pjmedia_sdp->origin.net_type, "IN");
}
static void copy_s_line_pjmedia(pj_pool_t *pool, pjmedia_sdp_session *pjmedia_sdp, struct ast_sdp *sdp)
{
pj_strdup2(pool, &pjmedia_sdp->name, sdp->s_line);
}
static void copy_t_line_pjmedia(pj_pool_t *pool, pjmedia_sdp_session *pjmedia_sdp, struct ast_sdp_t_line *t_line)
{
pjmedia_sdp->time.start = t_line->start;
pjmedia_sdp->time.stop = t_line->end;
}
static void copy_c_line_pjmedia(pj_pool_t *pool, pjmedia_sdp_conn **conn, struct ast_sdp_c_line *c_line)
{
pjmedia_sdp_conn *local_conn;
local_conn = PJ_POOL_ZALLOC_T(pool, pjmedia_sdp_conn);
pj_strdup2(pool, &local_conn->addr_type, c_line->family);
pj_strdup2(pool, &local_conn->addr, c_line->addr);
pj_strdup2(pool, &local_conn->net_type, "IN");
*conn = local_conn;
}
static void copy_a_lines_pjmedia(pj_pool_t *pool, pjmedia_sdp_session *pjmedia_sdp, struct ast_sdp_a_line_vector *a_lines)
{
int i;
for (i = 0; i < AST_VECTOR_SIZE(a_lines); ++i) {
pjmedia_sdp_attr *attr;
pj_str_t value;
pj_strdup2(pool, &value, AST_VECTOR_GET(a_lines, i).value);
attr = pjmedia_sdp_attr_create(pool, AST_VECTOR_GET(a_lines, i).name, &value);
pjmedia_sdp_session_add_attr(pjmedia_sdp, attr);
}
}
static void copy_a_lines_pjmedia_media(pj_pool_t *pool, pjmedia_sdp_media *media, struct ast_sdp_a_line_vector *a_lines)
{
int i;
for (i = 0; i < AST_VECTOR_SIZE(a_lines); ++i) {
pjmedia_sdp_attr *attr;
pj_str_t value;
pj_strdup2(pool, &value, AST_VECTOR_GET(a_lines, i).value);
attr = pjmedia_sdp_attr_create(pool, AST_VECTOR_GET(a_lines, i).name, &value);
pjmedia_sdp_media_add_attr(media, attr);
}
}
static void copy_m_line_pjmedia(pj_pool_t *pool, pjmedia_sdp_media *media, struct ast_sdp_m_line *m_line)
{
int i;
media->desc.port = m_line->port;
media->desc.port_count = m_line->port_count;
pj_strdup2(pool, &media->desc.transport, m_line->profile);
pj_strdup2(pool, &media->desc.media, m_line->type);
for (i = 0; i < AST_VECTOR_SIZE(&m_line->payloads); ++i) {
pj_strdup2(pool, &media->desc.fmt[i], AST_VECTOR_GET(&m_line->payloads, i));
++media->desc.fmt_count;
}
if (m_line->c_line.addr) {
copy_c_line_pjmedia(pool, &media->conn, &m_line->c_line);
}
copy_a_lines_pjmedia_media(pool, media, &m_line->a_lines);
}
static void copy_m_lines_pjmedia(pj_pool_t *pool, pjmedia_sdp_session *pjmedia_sdp, struct ast_sdp *sdp)
{
int i;
for (i = 0; i < AST_VECTOR_SIZE(&sdp->m_lines); ++i) {
pjmedia_sdp_media *media;
media = PJ_POOL_ZALLOC_T(pool, pjmedia_sdp_media);
copy_m_line_pjmedia(pool, media, AST_VECTOR_GET_ADDR(&sdp->m_lines, i));
pjmedia_sdp->media[pjmedia_sdp->media_count] = media;
++pjmedia_sdp->media_count;
}
}
static void *sdp_to_pjmedia(struct ast_sdp *sdp, void *translator_priv)
{
pj_pool_t *pool = translator_priv;
pjmedia_sdp_session *pjmedia_sdp;
pjmedia_sdp = PJ_POOL_ZALLOC_T(pool, pjmedia_sdp_session);
copy_o_line_pjmedia(pool, pjmedia_sdp, sdp);
copy_s_line_pjmedia(pool, pjmedia_sdp, sdp);
copy_t_line_pjmedia(pool, pjmedia_sdp, &sdp->t_line);
copy_c_line_pjmedia(pool, &pjmedia_sdp->conn, &sdp->c_line);
copy_a_lines_pjmedia(pool, pjmedia_sdp, &sdp->a_lines);
copy_m_lines_pjmedia(pool, pjmedia_sdp, sdp);
return pjmedia_sdp;
}
static struct ast_sdp_translator_ops pjmedia_translator = {
.repr = AST_SDP_REPR_PJMEDIA,
.translator_new = pjmedia_new,
.translator_free = pjmedia_free,
.to_sdp = pjmedia_to_sdp,
.from_sdp = sdp_to_pjmedia,
};
#ifdef TEST_FRAMEWORK
static int verify_s_line(char *s_line, char *expected)
{
return strcmp(s_line, expected) == 0;
}
static int verify_c_line(struct ast_sdp_c_line *c_line, char *family, char *addr)
{
return strcmp(c_line->family, family) == 0 && strcmp(c_line->addr, addr) == 0;
}
static int verify_t_line(struct ast_sdp_t_line *t_line, uint32_t start, uint32_t end)
{
return t_line->start == start && t_line->end == end;
}
static int verify_m_line(struct ast_sdp *sdp, int index, char *type, int port, int port_count, char *profile, ...)
{
struct ast_sdp_m_line *m_line;
int res;
va_list ap;
int i;
m_line = AST_VECTOR_GET_ADDR(&sdp->m_lines, index);
res = strcmp(m_line->type, type) == 0;
res |= m_line->port == port;
res |= m_line->port_count == port_count;
res |= strcmp(m_line->profile, profile) == 0;
va_start(ap, profile);
for (i = 0; i < AST_VECTOR_SIZE(&m_line->payloads); ++i) {
char *payload;
payload = va_arg(ap, char *);
if (!payload) {
res = -1;
break;
}
res |= strcmp(AST_VECTOR_GET(&m_line->payloads, i), payload) == 0;
}
va_end(ap);
return res;
}
static int verify_a_line(struct ast_sdp *sdp, int m_index, int a_index, char *name, char *value)
{
struct ast_sdp_m_line *m_line;
struct ast_sdp_a_line *a_line;
m_line = AST_VECTOR_GET_ADDR(&sdp->m_lines, m_index);
a_line = AST_VECTOR_GET_ADDR(&m_line->a_lines, a_index);
return strcmp(a_line->name, name) == 0 && strcmp(a_line->value, value) == 0;
}
AST_TEST_DEFINE(pjmedia_to_sdp_test)
{
struct ast_sdp_translator *translator;
pj_pool_t *pool;
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=0 0\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";
pjmedia_sdp_session *pjmedia_sdp;
struct ast_sdp *sdp = NULL;
pj_status_t status;
enum ast_test_result_state res = AST_TEST_PASS;
switch (cmd) {
case TEST_INIT:
info->name = "pjmedia_to_sdp";
info->category = "/main/sdp/";
info->summary = "PJMEDIA to SDP 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_REPR_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);
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);
if (strcmp(sdp->o_line.user, "alice")) {
ast_test_status_update(test, "Unexpected SDP user '%s'\n", sdp->o_line.user);
res = AST_TEST_FAIL;
goto cleanup;
} else if (sdp->o_line.id != 2890844526u) {
ast_test_status_update(test, "Unexpected SDP id '%u'\n", sdp->o_line.id);
res = AST_TEST_FAIL;
goto cleanup;
} else if (sdp->o_line.version != 2890844526u) {
ast_test_status_update(test, "Unexpected SDP version '%u'\n", sdp->o_line.version);
res = AST_TEST_FAIL;
goto cleanup;
} else if (strcmp(sdp->o_line.family, "IP4")) {
ast_test_status_update(test, "Unexpected address family '%s'\n", sdp->o_line.family);
res = AST_TEST_FAIL;
goto cleanup;
} else if (strcmp(sdp->o_line.addr, "host.atlanta.example.com")) {
ast_test_status_update(test, "Unexpected address '%s'\n", sdp->o_line.addr);
res = AST_TEST_FAIL;
goto cleanup;
}
if (!verify_s_line(sdp->s_line, " ")) {
ast_test_status_update(test, "Bad s line\n");
res = AST_TEST_FAIL;
goto cleanup;
} else if (!verify_c_line(&sdp->c_line, "IP4", "host.atlanta.example.com")) {
ast_test_status_update(test, "Bad c line\n");
res = AST_TEST_FAIL;
goto cleanup;
} else if (!verify_t_line(&sdp->t_line, 0, 0)) {
ast_test_status_update(test, "Bad t line\n");
res = AST_TEST_FAIL;
goto cleanup;
}
if (!verify_m_line(sdp, 0, "audio", 49170, 1, "RTP/AVP", "0", "8", "97", NULL)) {
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=0 0\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;
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_REPR_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) {
char buf[2048];
char errbuf[256];
ast_test_status_update(test, "SDPs aren't equal\n");
pjmedia_sdp_print(pjmedia_sdp_orig, buf, sizeof(buf));
ast_log(LOG_NOTICE, "Original SDP is %s\n", buf);
pjmedia_sdp_print(pjmedia_sdp_dup, buf, sizeof(buf));
ast_log(LOG_NOTICE, "New SDP is %s\n", buf);
pjmedia_strerror(status, errbuf, sizeof(errbuf));
ast_log(LOG_NOTICE, "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,
);
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