#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 = "88eaa8f5c1bd988bedd71113385e0886" , .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 233 of file func_volume.c.
static void __unreg_module | ( | void | ) | [static] |
Definition at line 233 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_free, and volume_information::audiohook.
00089 { 00090 struct volume_information *vi = data; 00091 00092 /* Destroy the audiohook, and destroy ourselves */ 00093 ast_audiohook_destroy(&vi->audiohook); 00094 ast_free(vi); 00095 00096 return; 00097 }
static int load_module | ( | void | ) | [static] |
Definition at line 228 of file func_volume.c.
References ast_custom_function_register, and volume_function.
00229 { 00230 return ast_custom_function_register(&volume_function); 00231 }
static int unload_module | ( | void | ) | [static] |
Definition at line 223 of file func_volume.c.
References ast_custom_function_unregister(), and volume_function.
00224 { 00225 return ast_custom_function_unregister(&volume_function); 00226 }
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 105 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().
00106 { 00107 struct ast_datastore *datastore = NULL; 00108 struct volume_information *vi = NULL; 00109 int *gain = NULL; 00110 00111 /* If the audiohook is stopping it means the channel is shutting down.... but we let the datastore destroy take care of it */ 00112 if (audiohook->status == AST_AUDIOHOOK_STATUS_DONE) 00113 return 0; 00114 00115 /* Grab datastore which contains our gain information */ 00116 if (!(datastore = ast_channel_datastore_find(chan, &volume_datastore, NULL))) 00117 return 0; 00118 00119 vi = datastore->data; 00120 00121 /* If this is DTMF then allow them to increase/decrease the gains */ 00122 if (ast_test_flag(vi, VOLUMEFLAG_CHANGE)) { 00123 if (frame->frametype == AST_FRAME_DTMF) { 00124 /* Only use DTMF coming from the source... not going to it */ 00125 if (direction != AST_AUDIOHOOK_DIRECTION_READ) 00126 return 0; 00127 if (frame->subclass.integer == '*') { 00128 vi->tx_gain += 1; 00129 vi->rx_gain += 1; 00130 } else if (frame->subclass.integer == '#') { 00131 vi->tx_gain -= 1; 00132 vi->rx_gain -= 1; 00133 } 00134 } 00135 } 00136 00137 00138 if (frame->frametype == AST_FRAME_VOICE) { 00139 /* Based on direction of frame grab the gain, and confirm it is applicable */ 00140 if (!(gain = (direction == AST_AUDIOHOOK_DIRECTION_READ) ? &vi->rx_gain : &vi->tx_gain) || !*gain) 00141 return 0; 00142 /* Apply gain to frame... easy as pi */ 00143 ast_frame_adjust_volume(frame, *gain); 00144 } 00145 00146 return 0; 00147 }
static int volume_write | ( | struct ast_channel * | chan, | |
const char * | cmd, | |||
char * | data, | |||
const char * | value | |||
) | [static] |
Definition at line 149 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.
00150 { 00151 struct ast_datastore *datastore = NULL; 00152 struct volume_information *vi = NULL; 00153 int is_new = 0; 00154 00155 /* Separate options from argument */ 00156 00157 AST_DECLARE_APP_ARGS(args, 00158 AST_APP_ARG(direction); 00159 AST_APP_ARG(options); 00160 ); 00161 00162 AST_STANDARD_APP_ARGS(args, data); 00163 00164 ast_channel_lock(chan); 00165 if (!(datastore = ast_channel_datastore_find(chan, &volume_datastore, NULL))) { 00166 ast_channel_unlock(chan); 00167 /* Allocate a new datastore to hold the reference to this volume and audiohook information */ 00168 if (!(datastore = ast_datastore_alloc(&volume_datastore, NULL))) 00169 return 0; 00170 if (!(vi = ast_calloc(1, sizeof(*vi)))) { 00171 ast_datastore_free(datastore); 00172 return 0; 00173 } 00174 ast_audiohook_init(&vi->audiohook, AST_AUDIOHOOK_TYPE_MANIPULATE, "Volume"); 00175 vi->audiohook.manipulate_callback = volume_callback; 00176 ast_set_flag(&vi->audiohook, AST_AUDIOHOOK_WANTS_DTMF); 00177 is_new = 1; 00178 } else { 00179 ast_channel_unlock(chan); 00180 vi = datastore->data; 00181 } 00182 00183 /* Adjust gain on volume information structure */ 00184 if (ast_strlen_zero(args.direction)) { 00185 ast_log(LOG_ERROR, "Direction must be specified for VOLUME function\n"); 00186 return -1; 00187 } 00188 00189 if (!strcasecmp(args.direction, "tx")) { 00190 vi->tx_gain = atoi(value); 00191 } else if (!strcasecmp(args.direction, "rx")) { 00192 vi->rx_gain = atoi(value); 00193 } else { 00194 ast_log(LOG_ERROR, "Direction must be either RX or TX\n"); 00195 } 00196 00197 if (is_new) { 00198 datastore->data = vi; 00199 ast_channel_lock(chan); 00200 ast_channel_datastore_add(chan, datastore); 00201 ast_channel_unlock(chan); 00202 ast_audiohook_attach(chan, &vi->audiohook); 00203 } 00204 00205 /* Add Option data to struct */ 00206 00207 if (!ast_strlen_zero(args.options)) { 00208 struct ast_flags flags = { 0 }; 00209 ast_app_parse_options(volume_opts, &flags, &data, args.options); 00210 vi->flags = flags.flags; 00211 } else { 00212 vi->flags = 0; 00213 } 00214 00215 return 0; 00216 }
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 = "88eaa8f5c1bd988bedd71113385e0886" , .load = load_module, .unload = unload_module, .load_pri = AST_MODPRI_DEFAULT, } [static] |
Definition at line 233 of file func_volume.c.
struct ast_module_info* ast_module_info = &__mod_info [static] |
Definition at line 233 of file func_volume.c.
struct ast_datastore_info volume_datastore [static] |
Initial value:
{ .type = "volume", .destroy = destroy_callback }
Definition at line 100 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 218 of file func_volume.c.
Referenced by load_module(), and unload_module().
struct ast_app_option volume_opts[128] = { [ 'p' ] = { .flag = VOLUMEFLAG_CHANGE },} [static] |