#include "asterisk.h"
#include "asterisk/module.h"
#include "asterisk/channel.h"
#include "asterisk/pbx.h"
#include "asterisk/utils.h"
#include "asterisk/audiohook.h"
#include "asterisk/app.h"
Go to the source code of this file.
Data Structures | |
struct | volume_information |
Enumerations | |
enum | volume_flags { VOLUMEFLAG_CHANGE = (1 << 1) } |
Functions | |
static void | __reg_module (void) |
static void | __unreg_module (void) |
static void | destroy_callback (void *data) |
static int | load_module (void) |
static int | unload_module (void) |
static int | volume_callback (struct ast_audiohook *audiohook, struct ast_channel *chan, struct ast_frame *frame, enum ast_audiohook_direction direction) |
static int | volume_write (struct ast_channel *chan, const char *cmd, char *data, const char *value) |
Variables | |
static struct ast_module_info | __mod_info = { .name = AST_MODULE, .flags = AST_MODFLAG_LOAD_ORDER , .description = "Technology independent volume control" , .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 = "ac1f6a56484a8820659555499174e588" , .load = load_module, .unload = unload_module, .load_pri = AST_MODPRI_DEFAULT, } |
static struct ast_module_info * | ast_module_info = &__mod_info |
static struct ast_datastore_info | volume_datastore |
Static structure for datastore information. | |
static struct ast_custom_function | volume_function |
static struct ast_app_option | volume_opts [128] = { [ 'p' ] = { .flag = VOLUMEFLAG_CHANGE },} |
Definition in file func_volume.c.
enum volume_flags |
static void __reg_module | ( | void | ) | [static] |
Definition at line 236 of file func_volume.c.
static void __unreg_module | ( | void | ) | [static] |
Definition at line 236 of file func_volume.c.
static void destroy_callback | ( | void * | data | ) | [static] |
Definition at line 88 of file func_volume.c.
References ast_audiohook_destroy(), ast_audiohook_detach(), ast_audiohook_lock, ast_audiohook_unlock, ast_free, and volume_information::audiohook.
00089 { 00090 struct volume_information *vi = data; 00091 00092 /* Destroy the audiohook, and destroy ourselves */ 00093 ast_audiohook_lock(&vi->audiohook); 00094 ast_audiohook_detach(&vi->audiohook); 00095 ast_audiohook_unlock(&vi->audiohook); 00096 ast_audiohook_destroy(&vi->audiohook); 00097 ast_free(vi); 00098 00099 return; 00100 }
static int load_module | ( | void | ) | [static] |
Definition at line 231 of file func_volume.c.
References ast_custom_function_register, and volume_function.
00232 { 00233 return ast_custom_function_register(&volume_function); 00234 }
static int unload_module | ( | void | ) | [static] |
Definition at line 226 of file func_volume.c.
References ast_custom_function_unregister(), and volume_function.
00227 { 00228 return ast_custom_function_unregister(&volume_function); 00229 }
static int volume_callback | ( | struct ast_audiohook * | audiohook, | |
struct ast_channel * | chan, | |||
struct ast_frame * | frame, | |||
enum ast_audiohook_direction | direction | |||
) | [static] |
Definition at line 108 of file func_volume.c.
References AST_AUDIOHOOK_DIRECTION_READ, AST_AUDIOHOOK_STATUS_DONE, ast_channel_datastore_find(), ast_frame_adjust_volume(), AST_FRAME_DTMF, AST_FRAME_VOICE, ast_test_flag, volume_information::audiohook, ast_datastore::data, ast_frame::frametype, ast_frame_subclass::integer, volume_information::rx_gain, ast_audiohook::status, ast_frame::subclass, volume_information::tx_gain, volume_datastore, and VOLUMEFLAG_CHANGE.
Referenced by volume_write().
00109 { 00110 struct ast_datastore *datastore = NULL; 00111 struct volume_information *vi = NULL; 00112 int *gain = NULL; 00113 00114 /* If the audiohook is stopping it means the channel is shutting down.... but we let the datastore destroy take care of it */ 00115 if (audiohook->status == AST_AUDIOHOOK_STATUS_DONE) 00116 return 0; 00117 00118 /* Grab datastore which contains our gain information */ 00119 if (!(datastore = ast_channel_datastore_find(chan, &volume_datastore, NULL))) 00120 return 0; 00121 00122 vi = datastore->data; 00123 00124 /* If this is DTMF then allow them to increase/decrease the gains */ 00125 if (ast_test_flag(vi, VOLUMEFLAG_CHANGE)) { 00126 if (frame->frametype == AST_FRAME_DTMF) { 00127 /* Only use DTMF coming from the source... not going to it */ 00128 if (direction != AST_AUDIOHOOK_DIRECTION_READ) 00129 return 0; 00130 if (frame->subclass.integer == '*') { 00131 vi->tx_gain += 1; 00132 vi->rx_gain += 1; 00133 } else if (frame->subclass.integer == '#') { 00134 vi->tx_gain -= 1; 00135 vi->rx_gain -= 1; 00136 } 00137 } 00138 } 00139 00140 00141 if (frame->frametype == AST_FRAME_VOICE) { 00142 /* Based on direction of frame grab the gain, and confirm it is applicable */ 00143 if (!(gain = (direction == AST_AUDIOHOOK_DIRECTION_READ) ? &vi->rx_gain : &vi->tx_gain) || !*gain) 00144 return 0; 00145 /* Apply gain to frame... easy as pi */ 00146 ast_frame_adjust_volume(frame, *gain); 00147 } 00148 00149 return 0; 00150 }
static int volume_write | ( | struct ast_channel * | chan, | |
const char * | cmd, | |||
char * | data, | |||
const char * | value | |||
) | [static] |
Definition at line 152 of file func_volume.c.
References args, AST_APP_ARG, ast_app_parse_options(), ast_audiohook_attach(), ast_audiohook_init(), AST_AUDIOHOOK_TYPE_MANIPULATE, AST_AUDIOHOOK_WANTS_DTMF, ast_calloc, ast_channel_datastore_add(), ast_channel_datastore_find(), ast_channel_lock, ast_channel_unlock, ast_datastore_alloc, ast_datastore_free(), AST_DECLARE_APP_ARGS, ast_log(), ast_set_flag, AST_STANDARD_APP_ARGS, ast_strlen_zero(), volume_information::audiohook, ast_datastore::data, volume_information::flags, ast_flags::flags, LOG_ERROR, volume_information::rx_gain, volume_information::tx_gain, volume_callback(), volume_datastore, and volume_opts.
00153 { 00154 struct ast_datastore *datastore = NULL; 00155 struct volume_information *vi = NULL; 00156 int is_new = 0; 00157 00158 /* Separate options from argument */ 00159 00160 AST_DECLARE_APP_ARGS(args, 00161 AST_APP_ARG(direction); 00162 AST_APP_ARG(options); 00163 ); 00164 00165 AST_STANDARD_APP_ARGS(args, data); 00166 00167 ast_channel_lock(chan); 00168 if (!(datastore = ast_channel_datastore_find(chan, &volume_datastore, NULL))) { 00169 ast_channel_unlock(chan); 00170 /* Allocate a new datastore to hold the reference to this volume and audiohook information */ 00171 if (!(datastore = ast_datastore_alloc(&volume_datastore, NULL))) 00172 return 0; 00173 if (!(vi = ast_calloc(1, sizeof(*vi)))) { 00174 ast_datastore_free(datastore); 00175 return 0; 00176 } 00177 ast_audiohook_init(&vi->audiohook, AST_AUDIOHOOK_TYPE_MANIPULATE, "Volume"); 00178 vi->audiohook.manipulate_callback = volume_callback; 00179 ast_set_flag(&vi->audiohook, AST_AUDIOHOOK_WANTS_DTMF); 00180 is_new = 1; 00181 } else { 00182 ast_channel_unlock(chan); 00183 vi = datastore->data; 00184 } 00185 00186 /* Adjust gain on volume information structure */ 00187 if (ast_strlen_zero(args.direction)) { 00188 ast_log(LOG_ERROR, "Direction must be specified for VOLUME function\n"); 00189 return -1; 00190 } 00191 00192 if (!strcasecmp(args.direction, "tx")) { 00193 vi->tx_gain = atoi(value); 00194 } else if (!strcasecmp(args.direction, "rx")) { 00195 vi->rx_gain = atoi(value); 00196 } else { 00197 ast_log(LOG_ERROR, "Direction must be either RX or TX\n"); 00198 } 00199 00200 if (is_new) { 00201 datastore->data = vi; 00202 ast_channel_lock(chan); 00203 ast_channel_datastore_add(chan, datastore); 00204 ast_channel_unlock(chan); 00205 ast_audiohook_attach(chan, &vi->audiohook); 00206 } 00207 00208 /* Add Option data to struct */ 00209 00210 if (!ast_strlen_zero(args.options)) { 00211 struct ast_flags flags = { 0 }; 00212 ast_app_parse_options(volume_opts, &flags, NULL, args.options); 00213 vi->flags = flags.flags; 00214 } else { 00215 vi->flags = 0; 00216 } 00217 00218 return 0; 00219 }
struct ast_module_info __mod_info = { .name = AST_MODULE, .flags = AST_MODFLAG_LOAD_ORDER , .description = "Technology independent volume control" , .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 = "ac1f6a56484a8820659555499174e588" , .load = load_module, .unload = unload_module, .load_pri = AST_MODPRI_DEFAULT, } [static] |
Definition at line 236 of file func_volume.c.
struct ast_module_info* ast_module_info = &__mod_info [static] |
Definition at line 236 of file func_volume.c.
struct ast_datastore_info volume_datastore [static] |
Initial value:
{ .type = "volume", .destroy = destroy_callback }
Definition at line 103 of file func_volume.c.
Referenced by volume_callback(), and volume_write().
struct ast_custom_function volume_function [static] |
Initial value:
{ .name = "VOLUME", .write = volume_write, }
Definition at line 221 of file func_volume.c.
Referenced by load_module(), and unload_module().
struct ast_app_option volume_opts[128] = { [ 'p' ] = { .flag = VOLUMEFLAG_CHANGE },} [static] |