codec_evs.patch

--- include/asterisk/format_cache.h	(Asterisk 13.13.1)
+++ include/asterisk/format_cache.h	(working copy)
@@ -234,2 +234,7 @@
 /*!
+ * \brief Built-in cached 3GPP EVS format.
+ */
+extern struct ast_format *ast_format_evs;
+
+/*!
  * \brief Initialize format cache support within the core.
--- main/codec_builtin.c	(Asterisk 13.13.1)
+++ main/codec_builtin.c	(working copy)
@@ -855,2 +855,13 @@

+
+static struct ast_codec evs = {
+	.name = "evs",
+	.description = "3GPP EVS",
+	.type = AST_MEDIA_TYPE_AUDIO,
+	.sample_rate = 16000,
+	.minimum_ms = 20,
+	.maximum_ms = 300,
+	.default_ms = 20,
+};
+
 #define CODEC_REGISTER_AND_CACHE(codec) \
@@ -887,2 +898,4 @@
 
+	res |= CODEC_REGISTER_AND_CACHE(evs);
+
 	res |= CODEC_REGISTER_AND_CACHE(g723);
--- main/format_cache.c	(Asterisk 13.13.1)
+++ main/format_cache.c	(working copy)
@@ -220,2 +220,7 @@
 /*!
+ * \brief Built-in cached 3GPP EVS format.
+ */
+struct ast_format *ast_format_evs;
+
+/*!
  * \brief Built-in cached t140 format.
@@ -302,2 +307,4 @@
 
+	ao2_replace(ast_format_evs, NULL);
+
 	ao2_replace(ast_format_g723, NULL);
@@ -416,2 +423,4 @@
 		ao2_replace(ast_format_g719, format);
+	} else if (!strcmp(name, "evs")) {
+		ao2_replace(ast_format_evs, format);
 	} else if (!strcmp(name, "opus")) {
--- main/rtp_engine.c	2024-12-28 02:22:04.888730659 +0000
+++ main/rtp_engine.c	2024-12-28 02:24:39.553838441 +0000
@@ -3905,6 +3905,7 @@
 	set_next_mime_type(ast_format_opus, 0,  "audio", "opus", 48000);
 	set_next_mime_type(ast_format_vp8, 0,  "video", "VP8", 90000);
 	set_next_mime_type(ast_format_vp9, 0, "video", "VP9", 90000);
+  set_next_mime_type(ast_format_evs, 0, "audio", "EVS", 16000);
 
 	/* Define the static rtp payload mappings */
 	add_static_payload(0, ast_format_ulaw, 0);
@@ -3945,6 +3946,7 @@
 	add_static_payload(105, ast_format_t140_red, 0);   /* Real time text chat (with redundancy encoding) */
 	add_static_payload(106, ast_format_t140, 0);     /* Real time text chat */
 	add_static_payload(107, ast_format_opus, 0);
+  ast_rtp_engine_load_format(ast_format_evs);
 	add_static_payload(108, ast_format_vp9, 0);
 	add_static_payload(109, ast_format_h265, 0);