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-rw-r--r--main/rtp_engine.c95
1 files changed, 59 insertions, 36 deletions
diff --git a/main/rtp_engine.c b/main/rtp_engine.c
index 0671374ef..b91bc4115 100644
--- a/main/rtp_engine.c
+++ b/main/rtp_engine.c
@@ -753,18 +753,18 @@ static void rtp_codecs_payloads_copy_rx(struct ast_rtp_codecs *src, struct ast_r
/*!
* \internal
- * \brief Remove other matching payload mappings.
+ * \brief Determine if a type of payload is already present in mappings.
* \since 14.0.0
*
- * \param codecs Codecs that need tx mappings removed.
- * \param instance RTP instance to notify of any payloads removed.
+ * \param codecs Codecs to be checked for mappings.
* \param to_match Payload type object to compare against.
*
* \note It is assumed that codecs is write locked before calling.
*
- * \return Nothing
+ * \retval 0 not found
+ * \retval 1 found
*/
-static void payload_mapping_tx_remove_other_mappings(struct ast_rtp_codecs *codecs, struct ast_rtp_instance *instance, struct ast_rtp_payload_type *to_match)
+static int payload_mapping_tx_is_present(const struct ast_rtp_codecs *codecs, const struct ast_rtp_payload_type *to_match)
{
int idx;
struct ast_rtp_payload_type *current;
@@ -772,12 +772,18 @@ static void payload_mapping_tx_remove_other_mappings(struct ast_rtp_codecs *code
for (idx = 0; idx < AST_VECTOR_SIZE(&codecs->payload_mapping_tx); ++idx) {
current = AST_VECTOR_GET(&codecs->payload_mapping_tx, idx);
- if (!current || current == to_match) {
+ if (!current) {
continue;
}
+ if (current == to_match) {
+ /* The exact object is already in the mapping. */
+ return 1;
+ }
if (current->asterisk_format && to_match->asterisk_format) {
- if (ast_format_cmp(current->format, to_match->format) == AST_FORMAT_CMP_NOT_EQUAL) {
+ if (ast_format_get_codec_id(current->format) != ast_format_get_codec_id(to_match->format)) {
continue;
+ } else if (current->payload == to_match->payload) {
+ return 0;
}
} else if (!current->asterisk_format && !to_match->asterisk_format) {
if (current->rtp_code != to_match->rtp_code) {
@@ -787,13 +793,10 @@ static void payload_mapping_tx_remove_other_mappings(struct ast_rtp_codecs *code
continue;
}
- /* Remove other mapping */
- AST_VECTOR_REPLACE(&codecs->payload_mapping_tx, idx, NULL);
- ao2_ref(current, -1);
- if (instance && instance->engine && instance->engine->payload_set) {
- instance->engine->payload_set(instance, idx, 0, NULL, 0);
- }
+ return 1;
}
+
+ return 0;
}
/*!
@@ -833,13 +836,14 @@ static void rtp_codecs_payloads_copy_tx(struct ast_rtp_codecs *src, struct ast_r
if (instance && instance->engine && instance->engine->payload_set) {
instance->engine->payload_set(instance, idx, type->asterisk_format, type->format, type->rtp_code);
}
-
- payload_mapping_tx_remove_other_mappings(dest, instance, type);
}
}
void ast_rtp_codecs_payloads_copy(struct ast_rtp_codecs *src, struct ast_rtp_codecs *dest, struct ast_rtp_instance *instance)
{
+ int idx;
+ struct ast_rtp_payload_type *type;
+
ast_rwlock_wrlock(&dest->codecs_lock);
/* Deadlock avoidance because of held write lock. */
@@ -849,6 +853,17 @@ void ast_rtp_codecs_payloads_copy(struct ast_rtp_codecs *src, struct ast_rtp_cod
ast_rwlock_wrlock(&dest->codecs_lock);
}
+ /*
+ * This represents a completely new mapping of what the remote party is
+ * expecting for payloads, so we clear out the entire tx payload mapping
+ * vector and replace it.
+ */
+ for (idx = 0; idx < AST_VECTOR_SIZE(&dest->payload_mapping_tx); ++idx) {
+ type = AST_VECTOR_GET(&dest->payload_mapping_tx, idx);
+ ao2_t_cleanup(type, "destroying ast_rtp_codec tx mapping");
+ AST_VECTOR_REPLACE(&dest->payload_mapping_tx, idx, NULL);
+ }
+
rtp_codecs_payloads_copy_rx(src, dest, instance);
rtp_codecs_payloads_copy_tx(src, dest, instance);
dest->framing = src->framing;
@@ -921,18 +936,20 @@ void ast_rtp_codecs_payloads_set_m_type(struct ast_rtp_codecs *codecs, struct as
ast_rwlock_wrlock(&codecs->codecs_lock);
- if (payload < AST_VECTOR_SIZE(&codecs->payload_mapping_tx)) {
- ao2_t_cleanup(AST_VECTOR_GET(&codecs->payload_mapping_tx, payload),
- "cleaning up replaced tx payload type");
- }
- AST_VECTOR_REPLACE(&codecs->payload_mapping_tx, payload, new_type);
+ if (!payload_mapping_tx_is_present(codecs, new_type)) {
+ if (payload < AST_VECTOR_SIZE(&codecs->payload_mapping_tx)) {
+ ao2_t_cleanup(AST_VECTOR_GET(&codecs->payload_mapping_tx, payload),
+ "cleaning up replaced tx payload type");
+ }
+ AST_VECTOR_REPLACE(&codecs->payload_mapping_tx, payload, new_type);
- if (instance && instance->engine && instance->engine->payload_set) {
- instance->engine->payload_set(instance, payload, new_type->asterisk_format, new_type->format, new_type->rtp_code);
+ if (instance && instance->engine && instance->engine->payload_set) {
+ instance->engine->payload_set(instance, payload, new_type->asterisk_format, new_type->format, new_type->rtp_code);
+ }
+ } else {
+ ao2_ref(new_type, -1);
}
- payload_mapping_tx_remove_other_mappings(codecs, instance, new_type);
-
ast_rwlock_unlock(&codecs->codecs_lock);
}
@@ -995,17 +1012,20 @@ int ast_rtp_codecs_payloads_set_rtpmap_type_rate(struct ast_rtp_codecs *codecs,
new_type->format = ast_format_parse_sdp_fmtp(new_type->format, "");
}
- if (pt < AST_VECTOR_SIZE(&codecs->payload_mapping_tx)) {
- ao2_t_cleanup(AST_VECTOR_GET(&codecs->payload_mapping_tx, pt),
- "cleaning up replaced tx payload type");
- }
- AST_VECTOR_REPLACE(&codecs->payload_mapping_tx, pt, new_type);
+ if (!payload_mapping_tx_is_present(codecs, new_type)) {
+ if (pt < AST_VECTOR_SIZE(&codecs->payload_mapping_tx)) {
+ ao2_t_cleanup(AST_VECTOR_GET(&codecs->payload_mapping_tx, pt),
+ "cleaning up replaced tx payload type");
+ }
+ AST_VECTOR_REPLACE(&codecs->payload_mapping_tx, pt, new_type);
- if (instance && instance->engine && instance->engine->payload_set) {
- instance->engine->payload_set(instance, pt, new_type->asterisk_format, new_type->format, new_type->rtp_code);
+ if (instance && instance->engine && instance->engine->payload_set) {
+ instance->engine->payload_set(instance, pt, new_type->asterisk_format, new_type->format, new_type->rtp_code);
+ }
+ } else {
+ ao2_ref(new_type, -1);
}
- payload_mapping_tx_remove_other_mappings(codecs, instance, new_type);
break;
}
@@ -1088,11 +1108,14 @@ int ast_rtp_codecs_payload_replace_format(struct ast_rtp_codecs *codecs, int pay
type->primary_mapping = 1;
ast_rwlock_wrlock(&codecs->codecs_lock);
- if (payload < AST_VECTOR_SIZE(&codecs->payload_mapping_tx)) {
- ao2_cleanup(AST_VECTOR_GET(&codecs->payload_mapping_tx, payload));
+ if (!payload_mapping_tx_is_present(codecs, type)) {
+ if (payload < AST_VECTOR_SIZE(&codecs->payload_mapping_tx)) {
+ ao2_cleanup(AST_VECTOR_GET(&codecs->payload_mapping_tx, payload));
+ }
+ AST_VECTOR_REPLACE(&codecs->payload_mapping_tx, payload, type);
+ } else {
+ ao2_ref(type, -1);
}
- AST_VECTOR_REPLACE(&codecs->payload_mapping_tx, payload, type);
- payload_mapping_tx_remove_other_mappings(codecs, NULL, type);
ast_rwlock_unlock(&codecs->codecs_lock);
return 0;
generated by cgit v1.2.3 (git 2.39.1) at 2024-06-30 15:34:53 +0000