main/cdrs: Preserve context/extension when executing a Macro or GoSub
[asterisk/asterisk.git] / apps / app_echo.c
index 803c1b5..d8b2079 100644 (file)
  * \brief Echo application -- play back what you hear to evaluate latency
  *
  * \author Mark Spencer <markster@digium.com>
- * 
+ *
  * \ingroup applications
  */
 
-#include <stdlib.h>
-#include <stdio.h>
-#include <unistd.h>
-#include <string.h>
+/*** MODULEINFO
+       <support_level>core</support_level>
+ ***/
 
 #include "asterisk.h"
 
 ASTERISK_FILE_VERSION(__FILE__, "$Revision$")
 
-#include "asterisk/lock.h"
 #include "asterisk/file.h"
-#include "asterisk/logger.h"
-#include "asterisk/channel.h"
-#include "asterisk/pbx.h"
 #include "asterisk/module.h"
+#include "asterisk/channel.h"
 
-static char *tdesc = "Simple Echo Application";
-
-static char *app = "Echo";
-
-static char *synopsis = "Echo audio, video, or DTMF back to the calling party";
-
-static char *descrip = 
-"  Echo(): This application will echo any audio, video, or DTMF frames read from\n"
-"the calling channel back to itself. If the DTMF digit '#' is received, the\n"
-"application will exit.\n";
-
-LOCAL_USER_DECL;
-
-static int echo_exec(struct ast_channel *chan, void *data)
+/*** DOCUMENTATION
+       <application name="Echo" language="en_US">
+               <synopsis>
+                       Echo media, DTMF back to the calling party
+               </synopsis>
+               <syntax />
+               <description>
+                       <para>Echos back any media or DTMF frames read from the calling 
+                       channel back to itself. This will not echo CONTROL, MODEM, or NULL
+                       frames. Note: If '#' detected application exits.</para>
+                       <para>This application does not automatically answer and should be
+                       preceeded by an application such as Answer() or Progress().</para>
+               </description>
+       </application>
+ ***/
+
+static const char app[] = "Echo";
+
+static int echo_exec(struct ast_channel *chan, const char *data)
 {
        int res = -1;
-       int format;
-       struct localuser *u;
-
-       LOCAL_USER_ADD(u);
-
-       format = ast_best_codec(chan->nativeformats);
-       ast_set_write_format(chan, format);
-       ast_set_read_format(chan, format);
 
        while (ast_waitfor(chan, -1) > -1) {
                struct ast_frame *f = ast_read(chan);
-               if (!f)
+               if (!f) {
                        break;
+               }
                f->delivery.tv_sec = 0;
                f->delivery.tv_usec = 0;
-               if (f->frametype == AST_FRAME_VOICE) {
-                       if (ast_write(chan, f)) 
-                               break;
-               } else if (f->frametype == AST_FRAME_VIDEO) {
-                       if (ast_write(chan, f)) 
-                               break;
-               } else if (f->frametype == AST_FRAME_DTMF) {
-                       if (f->subclass == '#') {
-                               res = 0;
-                               break;
-                       } else {
-                               if (ast_write(chan, f))
-                                       break;
-                       }
+               if (f->frametype != AST_FRAME_CONTROL
+                       && f->frametype != AST_FRAME_MODEM
+                       && f->frametype != AST_FRAME_NULL
+                       && ast_write(chan, f)) {
+                       ast_frfree(f);
+                       goto end;
+               }
+               if ((f->frametype == AST_FRAME_DTMF) && (f->subclass.integer == '#')) {
+                       res = 0;
+                       ast_frfree(f);
+                       goto end;
                }
                ast_frfree(f);
        }
-
-       LOCAL_USER_REMOVE(u);
-
+end:
        return res;
 }
 
-int unload_module(void)
+static int unload_module(void)
 {
-       int res;
-
-       res = ast_unregister_application(app);
-
-       STANDARD_HANGUP_LOCALUSERS;
-
-       return res;
-}
-
-int load_module(void)
-{
-       return ast_register_application(app, echo_exec, synopsis, descrip);
+       return ast_unregister_application(app);
 }
 
-const char *description(void)
+static int load_module(void)
 {
-       return tdesc;
+       return ast_register_application_xml(app, echo_exec);
 }
 
-int usecount(void)
-{
-       int res;
-       STANDARD_USECOUNT(res);
-       return res;
-}
-
-const char *key()
-{
-       return ASTERISK_GPL_KEY;
-}
+AST_MODULE_INFO_STANDARD(ASTERISK_GPL_KEY, "Simple Echo Application");