Asterisk - The Open Source Telephony Project  GIT-master-a24979a
Functions | Variables
app_milliwatt.c File Reference

Digital Milliwatt Test. More...

#include "asterisk.h"
#include "asterisk/module.h"
#include "asterisk/channel.h"
#include "asterisk/pbx.h"
#include "asterisk/indications.h"
#include "asterisk/format_cache.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)
 
struct ast_moduleAST_MODULE_SELF_SYM (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, .support_level = AST_MODULE_SUPPORT_CORE, }
 
static const char app [] = "Milliwatt"
 
static const struct ast_module_infoast_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 marks.nosp@m.ter@.nosp@m.digiu.nosp@m.m.co.nosp@m.m

Definition in file app_milliwatt.c.

Function Documentation

◆ __reg_module()

static void __reg_module ( void  )
static

Definition at line 191 of file app_milliwatt.c.

◆ __unreg_module()

static void __unreg_module ( void  )
static

Definition at line 191 of file app_milliwatt.c.

◆ AST_MODULE_SELF_SYM()

struct ast_module* AST_MODULE_SELF_SYM ( void  )

Definition at line 191 of file app_milliwatt.c.

◆ load_module()

static int load_module ( void  )
static

Definition at line 186 of file app_milliwatt.c.

187 {
189 }
static const char app[]
Definition: app_milliwatt.c:72
static int milliwatt_exec(struct ast_channel *chan, const char *data)
#define ast_register_application_xml(app, execute)
Register an application using XML documentation.
Definition: module.h:626

◆ milliwatt_alloc()

static void* milliwatt_alloc ( struct ast_channel chan,
void *  params 
)
static

Definition at line 76 of file app_milliwatt.c.

77 {
78  return ast_calloc(1, sizeof(int));
79 }
#define ast_calloc(num, len)
A wrapper for calloc()
Definition: astmm.h:202

References ast_calloc.

◆ milliwatt_exec()

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

Definition at line 160 of file app_milliwatt.c.

161 {
162  const char *options = data;
163  int res = -1;
164 
165  if (!ast_strlen_zero(options) && strchr(options, 'o')) {
166  return old_milliwatt_exec(chan);
167  }
168  if (!ast_strlen_zero(options) && strchr(options, 'm')) {
169  res = ast_playtones_start(chan, 23255, "1004/9000,0/1000", 0);
170  } else {
171  res = ast_playtones_start(chan, 23255, "1004/1000", 0);
172  }
173 
174  while (!res) {
175  res = ast_safe_sleep(chan, 10000);
176  }
177 
178  return res;
179 }
static int old_milliwatt_exec(struct ast_channel *chan)
int ast_safe_sleep(struct ast_channel *chan, int ms)
Wait for a specified amount of time, looking for hangups.
Definition: channel.c:1568
int ast_playtones_start(struct ast_channel *chan, int vol, const char *tonelist, int interruptible)
Start playing a list of tones on a channel.
Definition: indications.c:302
static force_inline int attribute_pure ast_strlen_zero(const char *s)
Definition: strings.h:65
static struct test_options options

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

◆ milliwatt_generate()

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

Definition at line 87 of file app_milliwatt.c.

88 {
89  unsigned char buf[AST_FRIENDLY_OFFSET + 640];
90  const int maxsamples = ARRAY_LEN(buf) - (AST_FRIENDLY_OFFSET / sizeof(buf[0]));
91  int i, *indexp = (int *) data, res;
92  struct ast_frame wf = {
94  .offset = AST_FRIENDLY_OFFSET,
95  .src = __FUNCTION__,
96  };
97 
100 
101  /* Instead of len, use samples, because channel.c generator_force
102  * generate(chan, tmp, 0, 160) ignores len. In any case, len is
103  * a multiple of samples, given by number of samples times bytes per
104  * sample. In the case of ulaw, len = samples. for signed linear
105  * len = 2 * samples */
106  if (samples > maxsamples) {
107  ast_log(LOG_WARNING, "Only doing %d samples (%d requested)\n", maxsamples, samples);
108  samples = maxsamples;
109  }
110 
111  len = samples * sizeof (buf[0]);
112  wf.datalen = len;
113  wf.samples = samples;
114 
115  /* create a buffer containing the digital milliwatt pattern */
116  for (i = 0; i < len; i++) {
117  buf[AST_FRIENDLY_OFFSET + i] = digital_milliwatt[(*indexp)++];
118  *indexp &= 7;
119  }
120 
121  res = ast_write(chan, &wf);
122  ast_frfree(&wf);
123 
124  if (res < 0) {
125  ast_log(LOG_WARNING,"Failed to write frame to '%s': %s\n",ast_channel_name(chan),strerror(errno));
126  return -1;
127  }
128 
129  return 0;
130 }
static const char digital_milliwatt[]
Definition: app_milliwatt.c:74
#define ast_log
Definition: astobj2.c:42
int ast_write(struct ast_channel *chan, struct ast_frame *frame)
Write a frame to a channel This function writes the given frame to the indicated channel.
Definition: channel.c:5179
const char * ast_channel_name(const struct ast_channel *chan)
char buf[BUFSIZE]
Definition: eagi_proxy.c:66
struct ast_format * ast_format_ulaw
Built-in cached ulaw format.
Definition: format_cache.c:86
static int len(struct ast_channel *chan, const char *cmd, char *data, char *buf, size_t buflen)
#define ast_frfree(fr)
#define AST_FRIENDLY_OFFSET
Offset into a frame's data buffer.
@ AST_FRAME_VOICE
#define LOG_WARNING
int errno
struct ast_format * format
Data structure associated with a single frame of data.
struct ast_frame_subclass subclass
union ast_frame::@254 data
enum ast_frame_type frametype
#define ARRAY_LEN(a)
Definition: utils.h:661

References ARRAY_LEN, ast_channel_name(), ast_format_ulaw, AST_FRAME_VOICE, ast_frfree, AST_FRIENDLY_OFFSET, ast_log, ast_write(), buf, ast_frame::data, ast_frame::datalen, digital_milliwatt, errno, ast_frame_subclass::format, ast_frame::frametype, len(), LOG_WARNING, ast_frame::ptr, ast_frame::samples, and ast_frame::subclass.

◆ milliwatt_release()

static void milliwatt_release ( struct ast_channel chan,
void *  data 
)
static

Definition at line 81 of file app_milliwatt.c.

82 {
83  ast_free(data);
84  return;
85 }
#define ast_free(a)
Definition: astmm.h:180

References ast_free.

◆ old_milliwatt_exec()

static int old_milliwatt_exec ( struct ast_channel chan)
static

Definition at line 138 of file app_milliwatt.c.

139 {
142 
143  if (ast_channel_state(chan) != AST_STATE_UP) {
144  ast_answer(chan);
145  }
146 
147  if (ast_activate_generator(chan,&milliwattgen,"milliwatt") < 0) {
148  ast_log(LOG_WARNING,"Failed to activate generator on '%s'\n",ast_channel_name(chan));
149  return -1;
150  }
151 
152  while (!ast_safe_sleep(chan, 10000))
153  ;
154 
156 
157  return -1;
158 }
static struct ast_generator milliwattgen
int ast_activate_generator(struct ast_channel *chan, struct ast_generator *gen, void *params)
Definition: channel.c:2952
void ast_deactivate_generator(struct ast_channel *chan)
Definition: channel.c:2894
int ast_set_read_format(struct ast_channel *chan, struct ast_format *format)
Sets read format on channel chan.
Definition: channel.c:5839
int ast_set_write_format(struct ast_channel *chan, struct ast_format *format)
Sets write format on channel chan.
Definition: channel.c:5880
int ast_answer(struct ast_channel *chan)
Answer a channel.
Definition: channel.c:2806
ast_channel_state
ast_channel states
Definition: channelstate.h:35
@ AST_STATE_UP
Definition: channelstate.h:42

References ast_activate_generator(), ast_answer(), ast_channel_name(), 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 milliwattgen.

Referenced by milliwatt_exec().

◆ unload_module()

static int unload_module ( void  )
static

Definition at line 181 of file app_milliwatt.c.

182 {
184 }
int ast_unregister_application(const char *app)
Unregister an application.
Definition: pbx_app.c:392

References app, and ast_unregister_application().

Variable Documentation

◆ __mod_info

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, .support_level = AST_MODULE_SUPPORT_CORE, }
static

Definition at line 186 of file app_milliwatt.c.

◆ app

const char app[] = "Milliwatt"
static

Definition at line 72 of file app_milliwatt.c.

Referenced by unload_module().

◆ ast_module_info

const struct ast_module_info* ast_module_info = &__mod_info
static

Definition at line 191 of file app_milliwatt.c.

◆ digital_milliwatt

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

Definition at line 74 of file app_milliwatt.c.

Referenced by milliwatt_generate().

◆ milliwattgen

struct ast_generator milliwattgen
static
Initial value:
= {
.alloc = milliwatt_alloc,
.release = milliwatt_release,
.generate = milliwatt_generate,
}
static int milliwatt_generate(struct ast_channel *chan, void *data, int len, int samples)
Definition: app_milliwatt.c:87
static void milliwatt_release(struct ast_channel *chan, void *data)
Definition: app_milliwatt.c:81
static void * milliwatt_alloc(struct ast_channel *chan, void *params)
Definition: app_milliwatt.c:76

Definition at line 87 of file app_milliwatt.c.

Referenced by old_milliwatt_exec().