Digital Milliwatt Test. More...

#include "asterisk.h"
#include "asterisk/module.h"
#include "asterisk/channel.h"
#include "asterisk/pbx.h"
#include "asterisk/indications.h"

Include dependency graph for app_milliwatt.c:

Go to the source code of this file.

Functions
static void	__reg_module (void)
static void	__unreg_module (void)
static int	load_module (void)
static void *	milliwatt_alloc (struct ast_channel chan, void params)
static int	milliwatt_exec (struct ast_channel chan, const char data)
static int	milliwatt_generate (struct ast_channel chan, void data, int len, int samples)
static void	milliwatt_release (struct ast_channel chan, void data)
static int	old_milliwatt_exec (struct ast_channel *chan)
static int	unload_module (void)
Variables
static struct ast_module_info	__mod_info = { .name = AST_MODULE, .flags = AST_MODFLAG_LOAD_ORDER , .description = "Digital Milliwatt (mu-law) Test Application" , .key = "This paragraph is copyright (c) 2006 by Digium, Inc. \In order for your module to load, it must return this \key via a function called \"key\". Any code which \includes this paragraph must be licensed under the GNU \General Public License version 2 or later (at your \option). In addition to Digium's general reservations \of rights, Digium expressly reserves the right to \allow other parties to license this paragraph under \different terms. Any use of Digium, Inc. trademarks or \logos (including \"Asterisk\" or \"Digium\") without \express written permission of Digium, Inc. is prohibited.\n" , .buildopt_sum = AST_BUILDOPT_SUM, .load = load_module, .unload = unload_module, .load_pri = AST_MODPRI_DEFAULT, }
static const char	app [] = "Milliwatt"
static struct ast_module_info *	ast_module_info = &__mod_info
static const char	digital_milliwatt [] = {0x1e,0x0b,0x0b,0x1e,0x9e,0x8b,0x8b,0x9e}
static struct ast_generator	milliwattgen

Detailed Description

Digital Milliwatt Test.

Author:: Mark Spencer <markster@digium.com>

Definition in file app_milliwatt.c.

Function Documentation

static void __reg_module ( void ) [static]

Definition at line 175 of file app_milliwatt.c.

static void __unreg_module ( void ) [static]

Definition at line 175 of file app_milliwatt.c.

static int load_module ( void ) [static]

Definition at line 170 of file app_milliwatt.c.

References ast_register_application_xml, and milliwatt_exec().

{
   return ast_register_application_xml(app, milliwatt_exec);
}

static void* milliwatt_alloc	(	struct ast_channel *	chan,
		void *	params
	)		`[static]`

Definition at line 67 of file app_milliwatt.c.

References ast_calloc.

{
   return ast_calloc(1, sizeof(int));
}

static int milliwatt_exec	(	struct ast_channel *	chan,
		const char *	data
	)		`[static]`

Definition at line 147 of file app_milliwatt.c.

References ast_playtones_start(), ast_safe_sleep(), ast_strlen_zero(), and old_milliwatt_exec().

Referenced by load_module().

{
   const char *options = data;
   int res = -1;

   if (!ast_strlen_zero(options) && strchr(options, 'o')) {
      return old_milliwatt_exec(chan);
   }

   res = ast_playtones_start(chan, 23255, "1004/1000", 0);

   while (!res) {
      res = ast_safe_sleep(chan, 10000);
   }

   return res;
}

static int milliwatt_generate	(	struct ast_channel *	chan,
		void *	data,
		int	len,
		int	samples
	)		`[static]`

Definition at line 78 of file app_milliwatt.c.

References ARRAY_LEN, AST_FORMAT_ULAW, AST_FRAME_VOICE, AST_FRIENDLY_OFFSET, ast_log(), ast_write(), ast_frame::data, ast_frame::datalen, errno, ast_frame::frametype, len(), LOG_WARNING, ast_channel::name, ast_frame::ptr, and ast_frame::samples.

{
   unsigned char buf[AST_FRIENDLY_OFFSET + 640];
   const int maxsamples = ARRAY_LEN(buf);
   int i, *indexp = (int *) data;
   struct ast_frame wf = {
      .frametype = AST_FRAME_VOICE,
      .subclass.codec = AST_FORMAT_ULAW,
      .offset = AST_FRIENDLY_OFFSET,
      .src = __FUNCTION__,
   };
   wf.data.ptr = buf + AST_FRIENDLY_OFFSET;

   /* Instead of len, use samples, because channel.c generator_force
   * generate(chan, tmp, 0, 160) ignores len. In any case, len is
   * a multiple of samples, given by number of samples times bytes per
   * sample. In the case of ulaw, len = samples. for signed linear
   * len = 2 * samples */
   if (samples > maxsamples) {
      ast_log(LOG_WARNING, "Only doing %d samples (%d requested)\n", maxsamples, samples);
      samples = maxsamples;
   }

   len = samples * sizeof (buf[0]);
   wf.datalen = len;
   wf.samples = samples;

   /* create a buffer containing the digital milliwatt pattern */
   for (i = 0; i < len; i++) {
      buf[AST_FRIENDLY_OFFSET + i] = digital_milliwatt[(*indexp)++];
      *indexp &= 7;
   }

   if (ast_write(chan,&wf) < 0) {
      ast_log(LOG_WARNING,"Failed to write frame to '%s': %s\n",chan->name,strerror(errno));
      return -1;
   }

   return 0;
}

static void milliwatt_release	(	struct ast_channel *	chan,
		void *	data
	)		`[static]`

Definition at line 72 of file app_milliwatt.c.

References ast_free.

{
   ast_free(data);
   return;
}

static int old_milliwatt_exec ( struct ast_channel * chan ) [static]

Definition at line 125 of file app_milliwatt.c.

References ast_channel::_state, ast_activate_generator(), ast_answer(), ast_deactivate_generator(), AST_FORMAT_ULAW, ast_log(), ast_safe_sleep(), ast_set_read_format(), ast_set_write_format(), AST_STATE_UP, LOG_WARNING, and ast_channel::name.

Referenced by milliwatt_exec().

{
   ast_set_write_format(chan, AST_FORMAT_ULAW);
   ast_set_read_format(chan, AST_FORMAT_ULAW);

   if (chan->_state != AST_STATE_UP) {
      ast_answer(chan);
   }

   if (ast_activate_generator(chan,&milliwattgen,"milliwatt") < 0) {
      ast_log(LOG_WARNING,"Failed to activate generator on '%s'\n",chan->name);
      return -1;
   }

   while (!ast_safe_sleep(chan, 10000))
      ;

   ast_deactivate_generator(chan);

   return -1;
}

static int unload_module ( void ) [static]

Definition at line 165 of file app_milliwatt.c.

References ast_unregister_application().

{
   return ast_unregister_application(app);
}

Variable Documentation

struct ast_module_info __mod_info = { .name = AST_MODULE, .flags = AST_MODFLAG_LOAD_ORDER , .description = "Digital Milliwatt (mu-law) Test Application" , .key = "This paragraph is copyright (c) 2006 by Digium, Inc. \In order for your module to load, it must return this \key via a function called \"key\". Any code which \includes this paragraph must be licensed under the GNU \General Public License version 2 or later (at your \option). In addition to Digium's general reservations \of rights, Digium expressly reserves the right to \allow other parties to license this paragraph under \different terms. Any use of Digium, Inc. trademarks or \logos (including \"Asterisk\" or \"Digium\") without \express written permission of Digium, Inc. is prohibited.\n" , .buildopt_sum = AST_BUILDOPT_SUM, .load = load_module, .unload = unload_module, .load_pri = AST_MODPRI_DEFAULT, } [static]

Definition at line 175 of file app_milliwatt.c.

const char app[] = "Milliwatt" [static]

Definition at line 63 of file app_milliwatt.c.

struct ast_module_info* ast_module_info = &__mod_info [static]

Definition at line 175 of file app_milliwatt.c.

const char digital_milliwatt[] = {0x1e,0x0b,0x0b,0x1e,0x9e,0x8b,0x8b,0x9e} [static]

Definition at line 65 of file app_milliwatt.c.

struct ast_generator milliwattgen [static]

Initial value:

 {
   alloc: milliwatt_alloc,
   release: milliwatt_release,
   generate: milliwatt_generate,
}

Definition at line 119 of file app_milliwatt.c.

Asterisk developer's documentation

Functions

Variables

Detailed Description

Function Documentation

Variable Documentation