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Merge "sdp: Add support for setting connection address and clean up state."

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This commit is contained in:
Mark Michelson
2017-04-03 09:32:08 -05:00
committed by Gerrit Code Review
parent 9c80796d6f f3290d6b66
commit cf4dd32bef
6 changed files with 397 additions and 125 deletions
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10
include/asterisk/sdp.h
View File

@@ -395,20 +395,20 @@ struct ast_sdp_a_line *ast_sdp_get_a(const struct ast_sdp *sdp, int index);
int ast_sdp_add_m(struct ast_sdp *sdp, struct ast_sdp_m_line *m_line);
/*!
* \brief Add a Media Description to an SDP
* \brief Add an RTP Media Description to an SDP
*
* \param sdp SDP
* \param sdp_state SDP state information
* \param options SDP Options
* \param rtp ast_rtp_instance
* \param stream stream
* \param stream_index stream
*
* \retval 0 Success
* \retval non-0 Failure
*
* \since 15
*/
int ast_sdp_add_m_from_stream(struct ast_sdp *sdp, const struct ast_sdp_options *options,
struct ast_rtp_instance *rtp, const struct ast_stream *stream);
int ast_sdp_add_m_from_rtp_stream(struct ast_sdp *sdp, const struct ast_sdp_state *sdp_state,
const struct ast_sdp_options *options, int stream_index);
/*!
* \brief Get the count of Media Descriptions on an SDP

20
include/asterisk/sdp_options.h
View File

@@ -268,26 +268,6 @@ void ast_sdp_options_set_g726_non_standard(struct ast_sdp_options *options,
*/
unsigned int ast_sdp_options_get_g726_non_standard(struct ast_sdp_options *options);
/*!
* \since 15.0.0
* \brief Set SDP Options locally_held
*
* \param options SDP Options
* \param locally_held
*/
void ast_sdp_options_set_locally_held(struct ast_sdp_options *options,
unsigned int locally_held);
/*!
* \since 15.0.0
* \brief Get SDP Options locally_held
*
* \param options SDP Options
*
* \returns locally_held
*/
unsigned int ast_sdp_options_get_locally_held(struct ast_sdp_options *options);
/*!
* \since 15.0.0
* \brief Set SDP Options tos_audio

86
include/asterisk/sdp_state.h
View File

@@ -23,6 +23,7 @@
#include "asterisk/sdp_options.h"
struct ast_sdp_state;
struct ast_sockaddr;
/*!
* \brief Allocate a new SDP state
@@ -50,6 +51,26 @@ void ast_sdp_state_free(struct ast_sdp_state *sdp_state);
struct ast_rtp_instance *ast_sdp_state_get_rtp_instance(const struct ast_sdp_state *sdp_state,
int stream_index);
/*!
* \brief Get the global connection address on the SDP state.
*/
const struct ast_sockaddr *ast_sdp_state_get_connection_address(const struct ast_sdp_state *sdp_state);
/*!
* \brief Get the connection address for a particular stream.
*
* \param sdp_state
* \param stream_index The particular stream to get the connection address of
* \param address[out] A place to store the address in
*
* \retval 0 Success
*
* \note
* Stream numbers correspond to the streams in the topology of the associated channel
*/
int ast_sdp_state_get_stream_connection_address(const struct ast_sdp_state *sdp_state,
int stream_index, struct ast_sockaddr *address);
/*!
* \brief Get the joint negotiated streams based on local and remote capabilities.
*
@@ -149,4 +170,69 @@ int ast_sdp_state_set_remote_sdp_from_impl(struct ast_sdp_state *sdp_state, void
*/
int ast_sdp_state_reset(struct ast_sdp_state *sdp_state);
/*!
* \brief Update the local stream topology on the SDP state.
*
* \param sdp_state
* \param streams The new stream topology.
*
* \retval 0 Success
*
* \since 15
*/
int ast_sdp_state_update_local_topology(struct ast_sdp_state *sdp_state, struct ast_stream_topology *streams);
/*!
* \brief Set the local address (IP address) to use for connection addresses
*
* \param sdp_state
* \param address The local address
*
* \note
* Passing NULL as an address will unset the explicit local connection address.
*
* \since 15
*/
void ast_sdp_state_set_local_address(struct ast_sdp_state *sdp_state, struct ast_sockaddr *address);
/*!
* \brief Set the connection address (IP address and port) to use for a specific stream
*
* \param sdp_state
* \param stream_index The stream to set the connection address for
* \param address The connection address
*
* \retval 0 Success
*
* \note
* Passing NULL as an address will unset the explicit local connection address.
*
* \since 15
*/
int ast_sdp_state_set_connection_address(struct ast_sdp_state *sdp_state, int stream_index,
struct ast_sockaddr *address);
/*!
* \since 15.0.0
* \brief Set a stream to be held or unheld
*
* \param sdp_state
* \param stream_index The stream to set the held value for
* \param locally_held
*/
void ast_sdp_state_set_locally_held(struct ast_sdp_state *sdp_state,
int stream_index, unsigned int locally_held);
/*!
* \since 15.0.0
* \brief Get whether a stream is held or not
*
* \param sdp_state
* \param stream_index The stream to get the held state for
*
* \returns locally_held
*/
unsigned int ast_sdp_state_get_locally_held(const struct ast_sdp_state *sdp_state,
int stream_index);
#endif /* _ASTERISK_SDP_STATE_H */

93
main/sdp.c
View File

@@ -500,69 +500,10 @@ int ast_sdp_m_add_format(struct ast_sdp_m_line *m_line, const struct ast_sdp_opt
return 0;
}
/* TODO
* This isn't set anywhere yet.
*/
/*! \brief Scheduler for RTCP purposes */
static struct ast_sched_context *sched;
/*! \brief Internal function which creates an RTP instance */
static struct ast_rtp_instance *create_rtp(const struct ast_sdp_options *options,
enum ast_media_type media_type)
{
struct ast_rtp_instance *rtp;
struct ast_rtp_engine_ice *ice;
struct ast_sockaddr temp_media_address;
static struct ast_sockaddr address_rtp;
struct ast_sockaddr *media_address = &address_rtp;
if (options->bind_rtp_to_media_address && !ast_strlen_zero(options->media_address)) {
ast_sockaddr_parse(&temp_media_address, options->media_address, 0);
media_address = &temp_media_address;
} else {
if (ast_check_ipv6()) {
ast_sockaddr_parse(&address_rtp, "::", 0);
} else {
ast_sockaddr_parse(&address_rtp, "0.0.0.0", 0);
}
}
if (!(rtp = ast_rtp_instance_new(options->rtp_engine, sched, media_address, NULL))) {
ast_log(LOG_ERROR, "Unable to create RTP instance using RTP engine '%s'\n",
options->rtp_engine);
return NULL;
}
ast_rtp_instance_set_prop(rtp, AST_RTP_PROPERTY_RTCP, 1);
ast_rtp_instance_set_prop(rtp, AST_RTP_PROPERTY_NAT, options->rtp_symmetric);
if (options->ice == AST_SDP_ICE_DISABLED && (ice = ast_rtp_instance_get_ice(rtp))) {
ice->stop(rtp);
}
if (options->telephone_event) {
ast_rtp_instance_dtmf_mode_set(rtp, AST_RTP_DTMF_MODE_RFC2833);
ast_rtp_instance_set_prop(rtp, AST_RTP_PROPERTY_DTMF, 1);
}
if (media_type == AST_MEDIA_TYPE_AUDIO &&
(options->tos_audio || options->cos_audio)) {
ast_rtp_instance_set_qos(rtp, options->tos_audio,
options->cos_audio, "SIP RTP Audio");
} else if (media_type == AST_MEDIA_TYPE_VIDEO &&
(options->tos_video || options->cos_video)) {
ast_rtp_instance_set_qos(rtp, options->tos_video,
options->cos_video, "SIP RTP Video");
}
ast_rtp_instance_set_last_rx(rtp, time(NULL));
return rtp;
}
int ast_sdp_add_m_from_stream(struct ast_sdp *sdp, const struct ast_sdp_options *options,
struct ast_rtp_instance *rtp, const struct ast_stream *stream)
int ast_sdp_add_m_from_rtp_stream(struct ast_sdp *sdp, const struct ast_sdp_state *sdp_state,
const struct ast_sdp_options *options, int stream_index)
{
struct ast_stream *stream = ast_stream_topology_get_stream(ast_sdp_state_get_local_topology(sdp_state), stream_index);
struct ast_sdp_m_line *m_line;
struct ast_format_cap *caps;
int i;
@@ -572,13 +513,15 @@ int ast_sdp_add_m_from_stream(struct ast_sdp *sdp, const struct ast_sdp_options
enum ast_media_type media_type;
char tmp[64];
struct ast_sockaddr address_rtp;
struct ast_rtp_instance *rtp = ast_sdp_state_get_rtp_instance(sdp_state, stream_index);
struct ast_sdp_a_line *a_line;
ast_assert(sdp && options && rtp && stream);
ast_assert(sdp && options && stream);
media_type = ast_stream_get_type(stream);
ast_rtp_instance_get_local_address(rtp, &address_rtp);
if (ast_sdp_state_get_stream_connection_address(sdp_state, 0, &address_rtp)) {
return -1;
}
m_line = ast_sdp_m_alloc(
ast_codec_media_type2str(ast_stream_get_type(stream)),
@@ -673,7 +616,7 @@ int ast_sdp_add_m_from_stream(struct ast_sdp *sdp, const struct ast_sdp_options
}
}
a_line = ast_sdp_a_alloc(options->locally_held ? "sendonly" : "sendrecv", "");
a_line = ast_sdp_a_alloc(ast_sdp_state_get_locally_held(sdp_state, stream_index) ? "sendonly" : "sendrecv", "");
if (!a_line || ast_sdp_m_add_a(m_line, a_line)) {
ast_sdp_a_free(a_line);
ast_sdp_m_free(m_line);
@@ -699,7 +642,6 @@ struct ast_sdp *ast_sdp_create_from_state(const struct ast_sdp_state *sdp_state)
struct ast_sdp_c_line *c_line = NULL;
struct ast_sdp_s_line *s_line = NULL;
struct ast_sdp_t_line *t_line = NULL;
struct ast_rtp_instance *rtp = NULL;
char *address_type;
struct timeval tv = ast_tvnow();
uint32_t t;
@@ -732,25 +674,18 @@ struct ast_sdp *ast_sdp_create_from_state(const struct ast_sdp_state *sdp_state)
}
for (stream_num = 0; stream_num < stream_count; stream_num++) {
struct ast_stream *stream = ast_stream_topology_get_stream(topology, stream_num);
enum ast_media_type type = ast_stream_get_type(ast_stream_topology_get_stream(topology, stream_num));
rtp = create_rtp(options, ast_stream_get_type(stream));
if (!rtp) {
goto error;
}
ast_stream_set_data(stream, AST_STREAM_DATA_RTP_INSTANCE,
rtp, (ast_stream_data_free_fn)&ast_rtp_instance_destroy);
if (ast_sdp_add_m_from_stream(sdp, options, rtp, stream)) {
goto error;
if (type == AST_MEDIA_TYPE_AUDIO || type == AST_MEDIA_TYPE_VIDEO) {
if (ast_sdp_add_m_from_rtp_stream(sdp, sdp_state, options, stream_num)) {
goto error;
}
}
}
return sdp;
error:
ao2_cleanup(rtp);
if (sdp) {
ast_sdp_free(sdp);
} else {

1
main/sdp_options.c
View File

@@ -64,7 +64,6 @@ DEFINE_GETTERS_SETTERS_FOR(unsigned int, rtp_symmetric);
DEFINE_GETTERS_SETTERS_FOR(unsigned int, telephone_event);
DEFINE_GETTERS_SETTERS_FOR(unsigned int, rtp_ipv6);
DEFINE_GETTERS_SETTERS_FOR(unsigned int, g726_non_standard);
DEFINE_GETTERS_SETTERS_FOR(unsigned int, locally_held);
DEFINE_GETTERS_SETTERS_FOR(unsigned int, tos_audio);
DEFINE_GETTERS_SETTERS_FOR(unsigned int, cos_audio);
DEFINE_GETTERS_SETTERS_FOR(unsigned int, tos_video);

312
main/sdp_state.c
View File

@@ -22,10 +22,14 @@
#include "asterisk/sdp_translator.h"
#include "asterisk/vector.h"
#include "asterisk/utils.h"
#include "asterisk/netsock2.h"
#include "asterisk/rtp_engine.h"
#include "../include/asterisk/sdp.h"
#include "asterisk/stream.h"
#include "sdp_private.h"
enum ast_sdp_state_machine {
/*! \brief The initial state.
*
@@ -61,13 +65,33 @@ enum ast_sdp_state_machine {
typedef int (*state_fn)(struct ast_sdp_state *state);
struct sdp_state_stream {
union {
/*! The underlying RTP instance */
struct ast_rtp_instance *instance;
};
/*! An explicit connection address for this stream */
struct ast_sockaddr connection_address;
/*! Whether this stream is held or not */
unsigned int locally_held;
};
struct sdp_state_capabilities {
/*! Stream topology */
struct ast_stream_topology *topology;
/*! Additional information about the streams */
AST_VECTOR(, struct sdp_state_stream) streams;
/*! An explicit global connection address */
struct ast_sockaddr connection_address;
};
struct ast_sdp_state {
/*! Local capabilities, learned through configuration */
struct ast_stream_topology *local_capabilities;
struct sdp_state_capabilities local_capabilities;
/*! Remote capabilities, learned through remote SDP */
struct ast_stream_topology *remote_capabilities;
/*! Joint capabilities. The combined local and remote capabilities. */
struct ast_stream_topology *joint_capabilities;
struct sdp_state_capabilities joint_capabilities;
/*! Local SDP. Generated via the options and local capabilities. */
struct ast_sdp *local_sdp;
/*! Remote SDP. Received directly from a peer. */
@@ -100,25 +124,42 @@ struct ast_sdp_state *ast_sdp_state_alloc(struct ast_stream_topology *streams,
return NULL;
}
sdp_state->local_capabilities = ast_stream_topology_clone(streams);
if (!sdp_state->local_capabilities) {
if (ast_sdp_state_update_local_topology(sdp_state, streams)) {
ast_sdp_state_free(sdp_state);
return NULL;
}
sdp_state->state = SDP_STATE_INITIAL;
return sdp_state;
}
static void sdp_state_capabilities_free(struct sdp_state_capabilities *sdp_capabilities)
{
int stream_index;
for (stream_index = 0; stream_index < AST_VECTOR_SIZE(&sdp_capabilities->streams); stream_index++) {
struct sdp_state_stream *stream_state = AST_VECTOR_GET_ADDR(&sdp_capabilities->streams, stream_index);
enum ast_media_type type = ast_stream_get_type(ast_stream_topology_get_stream(sdp_capabilities->topology, stream_index));
if (type == AST_MEDIA_TYPE_AUDIO || type == AST_MEDIA_TYPE_VIDEO) {
ast_rtp_instance_destroy(stream_state->instance);
}
}
ast_stream_topology_free(sdp_capabilities->topology);
AST_VECTOR_FREE(&sdp_capabilities->streams);
}
void ast_sdp_state_free(struct ast_sdp_state *sdp_state)
{
if (!sdp_state) {
return;
}
ast_stream_topology_free(sdp_state->local_capabilities);
sdp_state_capabilities_free(&sdp_state->local_capabilities);
ast_stream_topology_free(sdp_state->remote_capabilities);
ast_stream_topology_free(sdp_state->joint_capabilities);
sdp_state_capabilities_free(&sdp_state->joint_capabilities);
ast_sdp_free(sdp_state->local_sdp);
ast_sdp_free(sdp_state->remote_sdp);
ast_sdp_free(sdp_state->joint_sdp);
@@ -126,19 +167,75 @@ void ast_sdp_state_free(struct ast_sdp_state *sdp_state)
ast_sdp_translator_free(sdp_state->translator);
}
struct ast_rtp_instance *ast_sdp_state_get_rtp_instance(
const struct ast_sdp_state *sdp_state, int stream_index)
static struct sdp_state_stream *sdp_state_get_stream(const struct ast_sdp_state *sdp_state, int stream_index)
{
struct ast_stream *stream;
ast_assert(sdp_state != NULL);
stream = ast_stream_topology_get_stream(sdp_state->local_capabilities, stream_index);
if (!stream) {
if (stream_index >= AST_VECTOR_SIZE(&sdp_state->local_capabilities.streams)) {
return NULL;
}
return (struct ast_rtp_instance *)ast_stream_get_data(stream, AST_STREAM_DATA_RTP_INSTANCE);
return AST_VECTOR_GET_ADDR(&sdp_state->local_capabilities.streams, stream_index);
}
struct ast_rtp_instance *ast_sdp_state_get_rtp_instance(
const struct ast_sdp_state *sdp_state, int stream_index)
{
struct sdp_state_stream *stream_state;
ast_assert(sdp_state != NULL);
stream_state = sdp_state_get_stream(sdp_state, stream_index);
if (!stream_state) {
return NULL;
}
return stream_state->instance;
}
const struct ast_sockaddr *ast_sdp_state_get_connection_address(const struct ast_sdp_state *sdp_state)
{
ast_assert(sdp_state != NULL);
return &sdp_state->local_capabilities.connection_address;
}
int ast_sdp_state_get_stream_connection_address(const struct ast_sdp_state *sdp_state,
int stream_index, struct ast_sockaddr *address)
{
struct sdp_state_stream *stream_state;
enum ast_media_type type;
ast_assert(sdp_state != NULL);
ast_assert(address != NULL);
stream_state = sdp_state_get_stream(sdp_state, stream_index);
if (!stream_state) {
return -1;
}
/* If an explicit connection address has been provided for the stream return it */
if (!ast_sockaddr_isnull(&stream_state->connection_address)) {
ast_sockaddr_copy(address, &stream_state->connection_address);
return 0;
}
type = ast_stream_get_type(ast_stream_topology_get_stream(sdp_state->local_capabilities.topology,
stream_index));
if (type == AST_MEDIA_TYPE_AUDIO || type == AST_MEDIA_TYPE_VIDEO) {
ast_rtp_instance_get_local_address(stream_state->instance, address);
} else {
return -1;
}
/* If an explicit global connection address is set use it here for the IP part */
if (!ast_sockaddr_isnull(&sdp_state->local_capabilities.connection_address)) {
int port = ast_sockaddr_port(address);
ast_sockaddr_copy(address, &sdp_state->local_capabilities.connection_address);
ast_sockaddr_set_port(address, port);
}
return 0;
}
const struct ast_stream_topology *ast_sdp_state_get_joint_topology(
@@ -146,9 +243,9 @@ const struct ast_stream_topology *ast_sdp_state_get_joint_topology(
{
ast_assert(sdp_state != NULL);
if (sdp_state->state == SDP_STATE_NEGOTIATED) {
return sdp_state->joint_capabilities;
return sdp_state->joint_capabilities.topology;
} else {
return sdp_state->local_capabilities;
return sdp_state->local_capabilities.topology;
}
}
@@ -157,7 +254,7 @@ const struct ast_stream_topology *ast_sdp_state_get_local_topology(
{
ast_assert(sdp_state != NULL);
return sdp_state->local_capabilities;
return sdp_state->local_capabilities.topology;
}
const struct ast_sdp_options *ast_sdp_state_get_options(
@@ -193,11 +290,109 @@ static int merge_sdps(struct ast_sdp_state *sdp_state)
}
#endif
/* TODO
* This isn't set anywhere yet.
*/
/*! \brief Scheduler for RTCP purposes */
static struct ast_sched_context *sched;
/*! \brief Internal function which creates an RTP instance */
static struct ast_rtp_instance *create_rtp(const struct ast_sdp_options *options,
enum ast_media_type media_type)
{
struct ast_rtp_instance *rtp;
struct ast_rtp_engine_ice *ice;
struct ast_sockaddr temp_media_address;
static struct ast_sockaddr address_rtp;
struct ast_sockaddr *media_address = &address_rtp;
if (options->bind_rtp_to_media_address && !ast_strlen_zero(options->media_address)) {
ast_sockaddr_parse(&temp_media_address, options->media_address, 0);
media_address = &temp_media_address;
} else {
if (ast_check_ipv6()) {
ast_sockaddr_parse(&address_rtp, "::", 0);
} else {
ast_sockaddr_parse(&address_rtp, "0.0.0.0", 0);
}
}
if (!(rtp = ast_rtp_instance_new(options->rtp_engine, sched, media_address, NULL))) {
ast_log(LOG_ERROR, "Unable to create RTP instance using RTP engine '%s'\n",
options->rtp_engine);
return NULL;
}
ast_rtp_instance_set_prop(rtp, AST_RTP_PROPERTY_RTCP, 1);
ast_rtp_instance_set_prop(rtp, AST_RTP_PROPERTY_NAT, options->rtp_symmetric);
if (options->ice == AST_SDP_ICE_DISABLED && (ice = ast_rtp_instance_get_ice(rtp))) {
ice->stop(rtp);
}
if (options->telephone_event) {
ast_rtp_instance_dtmf_mode_set(rtp, AST_RTP_DTMF_MODE_RFC2833);
ast_rtp_instance_set_prop(rtp, AST_RTP_PROPERTY_DTMF, 1);
}
if (media_type == AST_MEDIA_TYPE_AUDIO &&
(options->tos_audio || options->cos_audio)) {
ast_rtp_instance_set_qos(rtp, options->tos_audio,
options->cos_audio, "SIP RTP Audio");
} else if (media_type == AST_MEDIA_TYPE_VIDEO &&
(options->tos_video || options->cos_video)) {
ast_rtp_instance_set_qos(rtp, options->tos_video,
options->cos_video, "SIP RTP Video");
}
ast_rtp_instance_set_last_rx(rtp, time(NULL));
return rtp;
}
static int sdp_state_setup_local_streams(struct ast_sdp_state *sdp_state)
{
int stream_index;
for (stream_index = 0; stream_index < AST_VECTOR_SIZE(&sdp_state->local_capabilities.streams); stream_index++) {
struct sdp_state_stream *stream_state_local = AST_VECTOR_GET_ADDR(&sdp_state->local_capabilities.streams, stream_index);
struct sdp_state_stream *stream_state_joint = NULL;
enum ast_media_type type_local = ast_stream_get_type(ast_stream_topology_get_stream(sdp_state->local_capabilities.topology, stream_index));
enum ast_media_type type_joint = AST_MEDIA_TYPE_UNKNOWN;
if (stream_index < AST_VECTOR_SIZE(&sdp_state->joint_capabilities.streams)) {
stream_state_joint = AST_VECTOR_GET_ADDR(&sdp_state->joint_capabilities.streams, stream_index);
type_joint = ast_stream_get_type(ast_stream_topology_get_stream(sdp_state->joint_capabilities.topology, stream_index));
}
/* If we can reuse an existing media stream then do so */
if (type_local == type_joint) {
if (type_local == AST_MEDIA_TYPE_AUDIO || type_local == AST_MEDIA_TYPE_VIDEO) {
stream_state_local->instance = ao2_bump(stream_state_joint->instance);
continue;
}
}
if (type_local == AST_MEDIA_TYPE_AUDIO || type_local == AST_MEDIA_TYPE_VIDEO) {
/* We need to create a new RTP instance */
stream_state_local->instance = create_rtp(sdp_state->options, type_local);
if (!stream_state_local->instance) {
return -1;
}
}
}
return 0;
}
const struct ast_sdp *ast_sdp_state_get_local_sdp(struct ast_sdp_state *sdp_state)
{
ast_assert(sdp_state != NULL);
if (!sdp_state->local_sdp) {
if (sdp_state_setup_local_streams(sdp_state)) {
return NULL;
}
sdp_state->local_sdp = ast_sdp_create_from_state(sdp_state);
}
@@ -254,10 +449,87 @@ int ast_sdp_state_reset(struct ast_sdp_state *sdp_state)
ast_stream_topology_free(sdp_state->remote_capabilities);
sdp_state->remote_capabilities = NULL;
ast_stream_topology_free(sdp_state->joint_capabilities);
sdp_state->joint_capabilities = NULL;
ast_stream_topology_free(sdp_state->joint_capabilities.topology);
sdp_state->joint_capabilities.topology = NULL;
sdp_state->state = SDP_STATE_INITIAL;
return 0;
}
int ast_sdp_state_update_local_topology(struct ast_sdp_state *sdp_state, struct ast_stream_topology *streams)
{
ast_assert(sdp_state != NULL);
ast_assert(streams != NULL);
sdp_state_capabilities_free(&sdp_state->local_capabilities);
sdp_state->local_capabilities.topology = ast_stream_topology_clone(streams);
if (!sdp_state->local_capabilities.topology) {
return -1;
}
if (AST_VECTOR_INIT(&sdp_state->local_capabilities.streams, ast_stream_topology_get_count(streams))) {
return -1;
}
return 0;
}
void ast_sdp_state_set_local_address(struct ast_sdp_state *sdp_state, struct ast_sockaddr *address)
{
ast_assert(sdp_state != NULL);
if (!address) {
ast_sockaddr_setnull(&sdp_state->local_capabilities.connection_address);
} else {
ast_sockaddr_copy(&sdp_state->local_capabilities.connection_address, address);
}
}
int ast_sdp_state_set_connection_address(struct ast_sdp_state *sdp_state, int stream_index,
struct ast_sockaddr *address)
{
struct sdp_state_stream *stream_state;
ast_assert(sdp_state != NULL);
stream_state = sdp_state_get_stream(sdp_state, stream_index);
if (!stream_state) {
return -1;
}
if (!address) {
ast_sockaddr_setnull(&stream_state->connection_address);
} else {
ast_sockaddr_copy(&stream_state->connection_address, address);
}
return 0;
}
void ast_sdp_state_set_locally_held(struct ast_sdp_state *sdp_state,
int stream_index, unsigned int locally_held)
{
struct sdp_state_stream *stream_state;
ast_assert(sdp_state != NULL);
stream_state = sdp_state_get_stream(sdp_state, stream_index);
if (!stream_state) {
return;
}
stream_state->locally_held = locally_held;
}
unsigned int ast_sdp_state_get_locally_held(const struct ast_sdp_state *sdp_state,
int stream_index)
{
struct sdp_state_stream *stream_state;
ast_assert(sdp_state != NULL);
stream_state = sdp_state_get_stream(sdp_state, stream_index);
if (!stream_state) {
return 0;
}
return stream_state->locally_held;
}