diff options
| -rw-r--r-- | include/asterisk/sdp_options.h | 2 | ||||
| -rw-r--r-- | include/asterisk/sdp_priv.h | 130 | ||||
| -rw-r--r-- | include/asterisk/sdp_translator.h | 102 | ||||
| -rw-r--r-- | main/sdp_repr.c | 111 | ||||
| -rw-r--r-- | main/sdp_translator.c | 99 | ||||
| -rw-r--r-- | res/res_sdp_translator_pjmedia.c | 577 |
6 files changed, 1021 insertions, 0 deletions
diff --git a/include/asterisk/sdp_options.h b/include/asterisk/sdp_options.h index 52f6f5545..a5c2d084e 100644 --- a/include/asterisk/sdp_options.h +++ b/include/asterisk/sdp_options.h @@ -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, }; /*! diff --git a/include/asterisk/sdp_priv.h b/include/asterisk/sdp_priv.h new file mode 100644 index 000000000..000d11143 --- /dev/null +++ b/include/asterisk/sdp_priv.h @@ -0,0 +1,130 @@ +/* + * 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 */ diff --git a/include/asterisk/sdp_translator.h b/include/asterisk/sdp_translator.h new file mode 100644 index 000000000..62a875e0a --- /dev/null +++ b/include/asterisk/sdp_translator.h @@ -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 */ diff --git a/main/sdp_repr.c b/main/sdp_repr.c new file mode 100644 index 000000000..6df243b0e --- /dev/null +++ b/main/sdp_repr.c @@ -0,0 +1,111 @@ +/* + * 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); +} + diff --git a/main/sdp_translator.c b/main/sdp_translator.c new file mode 100644 index 000000000..5426ae954 --- /dev/null +++ b/main/sdp_translator.c @@ -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, ®istered_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, ®istered_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, ®istered_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); +} diff --git a/res/res_sdp_translator_pjmedia.c b/res/res_sdp_translator_pjmedia.c new file mode 100644 index 000000000..141b97617 --- /dev/null +++ b/res/res_sdp_translator_pjmedia.c @@ -0,0 +1,577 @@ +/* + * 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, +); |