[Asterisk-code-review] ari/resource channels: Add 'formats' to channel create/orig... (asterisk[13])

Anonymous Coward asteriskteam at digium.com
Wed Jun 8 00:11:30 CDT 2016


Anonymous Coward #1000019 has submitted this change and it was merged.

Change subject: ari/resource_channels:  Add 'formats' to channel create/originate
......................................................................


ari/resource_channels:  Add 'formats' to channel create/originate

If you create a local channel and don't specify an originator channel
to take capabilities from, we automatically add all audio formats to
the new channel's capabilities. When we try to make the channel
compatible with another, the "best format" functions pick the best
format available, which in this case will be slin192.  While this is
great for preserving quality, it's the worst for performance and
overkill for the vast majority of applications.

In the absense of any other information, adding all formats is the
correct thing to do and it's not always possible to supply an
originator so a new parameter 'formats' has been added to the channel
create/originate functions. It's just a comma separated list of formats
to make availalble for the channel. Example: "ulaw,slin,slin16".
'formats' and 'originator' are mutually exclusive.

To facilitate determination of format names, the format name has been
added to "core show codecs".

ASTERISK-26070 #close

Change-Id: I091b23ecd41c1b4128d85028209772ee139f604b
---
M CHANGES
M include/asterisk/codec.h
M main/codec.c
M main/codec_builtin.c
M res/ari/resource_channels.c
M res/ari/resource_channels.h
M res/res_ari_channels.c
M rest-api/api-docs/channels.json
8 files changed, 104 insertions(+), 8 deletions(-)

Approvals:
  Mark Michelson: Looks good to me, but someone else must approve
  Anonymous Coward #1000019: Verified
  Joshua Colp: Looks good to me, approved



diff --git a/CHANGES b/CHANGES
index 890b3af..912dc7f 100644
--- a/CHANGES
+++ b/CHANGES
@@ -71,6 +71,18 @@
    server installations via alternate means (DUNDI for example). By default
    this feature is not used.
 
+Codecs
+------------------
+ * Added the associated format name to 'core show codecs'.
+
+res_ari_channels
+------------------
+ * Added 'formats' to channel create/originate to allow setting the allowed
+   formats for a channel when no originator channel is available.  Especially
+   useful for Local channel creation where no other format information is
+   available.  'core show codecs' can now be used to look up suitable format
+   names.
+
 ------------------------------------------------------------------------------
 --- Functionality changes from Asterisk 13.8.0 to Asterisk 13.9.0 ------------
 ------------------------------------------------------------------------------
diff --git a/include/asterisk/codec.h b/include/asterisk/codec.h
index 28befec..fb2b7da 100644
--- a/include/asterisk/codec.h
+++ b/include/asterisk/codec.h
@@ -77,6 +77,8 @@
 	unsigned int smooth;
 	/*! \brief The module that registered this codec */
 	struct ast_module *mod;
+	/*! \brief A format name for a default sane format using this codec */
+	const char *format_name;
 };
 
 /*!
diff --git a/main/codec.c b/main/codec.c
index 543d4d0..c8644fd 100644
--- a/main/codec.c
+++ b/main/codec.c
@@ -135,8 +135,8 @@
 				"\tIt does not indicate anything about your configuration.\n");
 	}
 
-	ast_cli(a->fd, "%8s %5s %8s %s\n","ID","TYPE","NAME","DESCRIPTION");
-	ast_cli(a->fd, "-----------------------------------------------------------------------------------\n");
+	ast_cli(a->fd, "%8s %-5s %-12s %-16s %s\n","ID","TYPE","NAME","FORMAT","DESCRIPTION");
+	ast_cli(a->fd, "------------------------------------------------------------------------------------------------\n");
 
 	ao2_rdlock(codecs);
 	i = ao2_iterator_init(codecs, AO2_ITERATOR_DONTLOCK);
@@ -164,10 +164,11 @@
 			}
 		}
 
-		ast_cli(a->fd, "%8u %5s %8s (%s)\n",
+		ast_cli(a->fd, "%8u %-5s %-12s %-16s (%s)\n",
 			codec->id,
 			ast_codec_media_type2str(codec->type),
 			codec->name,
+			S_OR(codec->format_name, "no cached format"),
 			codec->description);
 	}
 
@@ -216,7 +217,8 @@
 		return CLI_SUCCESS;
 	}
 
-	ast_cli(a->fd, "%11u %s\n", (unsigned int) codec->id, codec->description);
+	ast_cli(a->fd, "%11u %s (%s)\n", (unsigned int) codec->id, codec->description,
+		S_OR(codec->format_name, "no format"));
 
 	ao2_ref(codec, -1);
 
diff --git a/main/codec_builtin.c b/main/codec_builtin.c
index 346b47b..d7d253a 100644
--- a/main/codec_builtin.c
+++ b/main/codec_builtin.c
@@ -774,6 +774,7 @@
 		int __res_ ## __LINE__ = 0; \
 		struct ast_format *__fmt_ ## __LINE__; \
 		struct ast_codec *__codec_ ## __LINE__; \
+		codec.format_name = (codec).name; \
 		res |= __ast_codec_register(&(codec), NULL); \
 		__codec_ ## __LINE__ = ast_codec_get((codec).name, (codec).type, (codec).sample_rate); \
 		__fmt_ ## __LINE__ = __codec_ ## __LINE__ ? ast_format_create(__codec_ ## __LINE__) : NULL; \
@@ -783,14 +784,15 @@
 		__res_ ## __LINE__; \
 	})
 
-#define CODEC_REGISTER_AND_CACHE_NAMED(format_name, codec) \
+#define CODEC_REGISTER_AND_CACHE_NAMED(fmt_name, codec) \
 	({ \
 		int __res_ ## __LINE__ = 0; \
 		struct ast_format *__fmt_ ## __LINE__; \
 		struct ast_codec *__codec_ ## __LINE__; \
+		codec.format_name = fmt_name; \
 		res |= __ast_codec_register(&(codec), NULL); \
 		__codec_ ## __LINE__ = ast_codec_get((codec).name, (codec).type, (codec).sample_rate); \
-		__fmt_ ## __LINE__ = ast_format_create_named((format_name), __codec_ ## __LINE__); \
+		__fmt_ ## __LINE__ = ast_format_create_named((fmt_name), __codec_ ## __LINE__); \
 		res |= ast_format_cache_set(__fmt_ ## __LINE__); \
 		ao2_ref(__fmt_ ## __LINE__, -1); \
 		ao2_ref(__codec_ ## __LINE__, -1); \
diff --git a/res/ari/resource_channels.c b/res/ari/resource_channels.c
index 9e2db9d..6baac7a 100644
--- a/res/ari/resource_channels.c
+++ b/res/ari/resource_channels.c
@@ -912,6 +912,7 @@
 	const char *args_channel_id,
 	const char *args_other_channel_id,
 	const char *args_originator,
+	const char *args_formats,
 	struct ast_ari_response *response)
 {
 	char *dialtech;
@@ -930,6 +931,7 @@
 	};
 	struct ari_origination *origination;
 	pthread_t thread;
+	struct ast_format_cap *format_cap = NULL;
 
 	if ((assignedids.uniqueid && AST_MAX_PUBLIC_UNIQUEID < strlen(assignedids.uniqueid))
 		|| (assignedids.uniqueid2 && AST_MAX_PUBLIC_UNIQUEID < strlen(assignedids.uniqueid2))) {
@@ -941,6 +943,12 @@
 	if (ast_strlen_zero(args_endpoint)) {
 		ast_ari_response_error(response, 400, "Bad Request",
 			"Endpoint must be specified");
+		return;
+	}
+
+	if (!ast_strlen_zero(args_originator) && !ast_strlen_zero(args_formats)) {
+		ast_ari_response_error(response, 400, "Bad Request",
+			"Originator and formats can't both be specified");
 		return;
 	}
 
@@ -1066,7 +1074,41 @@
 		}
 	}
 
-	if (ast_dial_prerun(dial, other, NULL)) {
+	if (!ast_strlen_zero(args_formats)) {
+		char *format_name;
+		char *formats_copy = ast_strdupa(args_formats);
+
+		if (!(format_cap = ast_format_cap_alloc(AST_FORMAT_CAP_FLAG_DEFAULT))) {
+			ast_ari_response_alloc_failed(response);
+			ast_dial_destroy(dial);
+			ast_free(origination);
+			ast_channel_cleanup(other);
+			return;
+		}
+
+		while ((format_name = ast_strip(strsep(&formats_copy, ",")))) {
+			struct ast_format *fmt = ast_format_cache_get(format_name);
+
+			if (!fmt || ast_format_cap_append(format_cap, fmt, 0)) {
+				if (!fmt) {
+					ast_ari_response_error(
+						response, 400, "Bad Request",
+						"Provided format (%s) was not found", format_name);
+				} else {
+					ast_ari_response_alloc_failed(response);
+				}
+				ast_dial_destroy(dial);
+				ast_free(origination);
+				ast_channel_cleanup(other);
+				ao2_ref(format_cap, -1);
+				ao2_cleanup(fmt);
+				return;
+			}
+			ao2_ref(fmt, -1);
+		}
+	}
+
+	if (ast_dial_prerun(dial, other, format_cap)) {
 		ast_ari_response_alloc_failed(response);
 		ast_dial_destroy(dial);
 		ast_free(origination);
@@ -1075,6 +1117,7 @@
 	}
 
 	ast_channel_cleanup(other);
+	ao2_cleanup(format_cap);
 
 	chan = ast_dial_get_channel(dial, 0);
 	if (!chan) {
@@ -1215,6 +1258,7 @@
 		args->channel_id,
 		args->other_channel_id,
 		args->originator,
+		args->formats,
 		response);
 	ast_variables_destroy(variables);
 }
@@ -1251,6 +1295,7 @@
 		args->channel_id,
 		args->other_channel_id,
 		args->originator,
+		args->formats,
 		response);
 	ast_variables_destroy(variables);
 }
diff --git a/res/ari/resource_channels.h b/res/ari/resource_channels.h
index 4d3ad5f..5bb6f7f 100644
--- a/res/ari/resource_channels.h
+++ b/res/ari/resource_channels.h
@@ -78,6 +78,8 @@
 	const char *other_channel_id;
 	/*! The unique id of the channel which is originating this one. */
 	const char *originator;
+	/*! The format name capability list to use if originator is not specified. Ex. "ulaw,slin16".  Format names an be found with "core show codecs". */
+	const char *formats;
 };
 /*!
  * \brief Body parsing function for /channels.
@@ -141,6 +143,8 @@
 	const char *other_channel_id;
 	/*! The unique id of the channel which is originating this one. */
 	const char *originator;
+	/*! The format name capability list to use if originator is not specified. Ex. "ulaw,slin16".  Format names an be found with "core show codecs". */
+	const char *formats;
 };
 /*!
  * \brief Body parsing function for /channels/{channelId}.
diff --git a/res/res_ari_channels.c b/res/res_ari_channels.c
index d1ae801..a14a9c8 100644
--- a/res/res_ari_channels.c
+++ b/res/res_ari_channels.c
@@ -157,6 +157,10 @@
 	if (field) {
 		args->originator = ast_json_string_get(field);
 	}
+	field = ast_json_object_get(body, "formats");
+	if (field) {
+		args->formats = ast_json_string_get(field);
+	}
 	return 0;
 }
 
@@ -216,6 +220,9 @@
 		} else
 		if (strcmp(i->name, "originator") == 0) {
 			args.originator = (i->value);
+		} else
+		if (strcmp(i->name, "formats") == 0) {
+			args.formats = (i->value);
 		} else
 		{}
 	}
@@ -377,6 +384,10 @@
 	if (field) {
 		args->originator = ast_json_string_get(field);
 	}
+	field = ast_json_object_get(body, "formats");
+	if (field) {
+		args->formats = ast_json_string_get(field);
+	}
 	return 0;
 }
 
@@ -434,6 +445,9 @@
 		if (strcmp(i->name, "originator") == 0) {
 			args.originator = (i->value);
 		} else
+		if (strcmp(i->name, "formats") == 0) {
+			args.formats = (i->value);
+		} else
 		{}
 	}
 	for (i = path_vars; i; i = i->next) {
diff --git a/rest-api/api-docs/channels.json b/rest-api/api-docs/channels.json
index cb41fb6..8eaa5eb 100644
--- a/rest-api/api-docs/channels.json
+++ b/rest-api/api-docs/channels.json
@@ -128,6 +128,14 @@
 							"required": false,
 							"allowMultiple": false,
 							"dataType": "string"
+						},
+						{
+							"name": "formats",
+							"description": "The format name capability list to use if originator is not specified. Ex. \"ulaw,slin16\".  Format names can be found with \"core show codecs\".",
+							"paramType": "query",
+							"required": false,
+							"allowMultiple": false,
+							"dataType": "string"
 						}
 					],
 					"errorResponses": [
@@ -276,6 +284,14 @@
 							"required": false,
 							"allowMultiple": false,
 							"dataType": "string"
+						},
+						{
+							"name": "formats",
+							"description": "The format name capability list to use if originator is not specified. Ex. \"ulaw,slin16\".  Format names can be found with \"core show codecs\".",
+							"paramType": "query",
+							"required": false,
+							"allowMultiple": false,
+							"dataType": "string"
 						}
 					],
 					"errorResponses": [
@@ -284,7 +300,6 @@
 							"reason": "Invalid parameters for originating a channel."
 						}
 					]
-
 				},
 				{
 					"httpMethod": "DELETE",

-- 
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Gerrit-MessageType: merged
Gerrit-Change-Id: I091b23ecd41c1b4128d85028209772ee139f604b
Gerrit-PatchSet: 3
Gerrit-Project: asterisk
Gerrit-Branch: 13
Gerrit-Owner: George Joseph <gjoseph at digium.com>
Gerrit-Reviewer: Anonymous Coward #1000019
Gerrit-Reviewer: George Joseph <gjoseph at digium.com>
Gerrit-Reviewer: Joshua Colp <jcolp at digium.com>
Gerrit-Reviewer: Kevin Harwell <kharwell at digium.com>
Gerrit-Reviewer: Mark Michelson <mmichelson at digium.com>



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