#include "asterisk.h"
#include "asterisk/module.h"
#include "asterisk/channel.h"
#include "asterisk/pbx.h"
#include "asterisk/utils.h"
#include "asterisk/audiohook.h"
Go to the source code of this file.
Data Structures | |
struct | volume_information |
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_DEFAULT , .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 = "a9c98e5d177805051735cb5b0b16b0a0" , .load = load_module, .unload = unload_module, } |
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 |
Definition in file func_volume.c.
static void __reg_module | ( | void | ) | [static] |
Definition at line 160 of file func_volume.c.
static void __unreg_module | ( | void | ) | [static] |
Definition at line 160 of file func_volume.c.
static void destroy_callback | ( | void * | data | ) | [static] |
Definition at line 45 of file func_volume.c.
References ast_audiohook_destroy(), volume_information::audiohook, and free.
00046 { 00047 struct volume_information *vi = data; 00048 00049 /* Destroy the audiohook, and destroy ourselves */ 00050 ast_audiohook_destroy(&vi->audiohook); 00051 free(vi); 00052 00053 return; 00054 }
static int load_module | ( | void | ) | [static] |
Definition at line 155 of file func_volume.c.
References ast_custom_function_register, and volume_function.
00156 { 00157 return ast_custom_function_register(&volume_function); 00158 }
static int unload_module | ( | void | ) | [static] |
Definition at line 150 of file func_volume.c.
References ast_custom_function_unregister(), and volume_function.
00151 { 00152 return ast_custom_function_unregister(&volume_function); 00153 }
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 62 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, volume_information::audiohook, chan, ast_datastore::data, ast_frame::frametype, volume_information::rx_gain, ast_audiohook::status, ast_frame::subclass, volume_information::tx_gain, and volume_datastore.
Referenced by volume_write().
00063 { 00064 struct ast_datastore *datastore = NULL; 00065 struct volume_information *vi = NULL; 00066 int *gain = NULL; 00067 00068 /* If the audiohook is stopping it means the channel is shutting down.... but we let the datastore destroy take care of it */ 00069 if (audiohook->status == AST_AUDIOHOOK_STATUS_DONE) 00070 return 0; 00071 00072 /* Grab datastore which contains our gain information */ 00073 if (!(datastore = ast_channel_datastore_find(chan, &volume_datastore, NULL))) 00074 return 0; 00075 00076 vi = datastore->data; 00077 00078 /* If this is DTMF then allow them to increase/decrease the gains */ 00079 if (frame->frametype == AST_FRAME_DTMF) { 00080 /* Only use DTMF coming from the source... not going to it */ 00081 if (direction != AST_AUDIOHOOK_DIRECTION_READ) 00082 return 0; 00083 if (frame->subclass == '*') { 00084 vi->tx_gain += 1; 00085 vi->rx_gain += 1; 00086 } else if (frame->subclass == '#') { 00087 vi->tx_gain -= 1; 00088 vi->rx_gain -= 1; 00089 } 00090 } else if (frame->frametype == AST_FRAME_VOICE) { 00091 /* Based on direction of frame grab the gain, and confirm it is applicable */ 00092 if (!(gain = (direction == AST_AUDIOHOOK_DIRECTION_READ) ? &vi->rx_gain : &vi->tx_gain) || !*gain) 00093 return 0; 00094 /* Apply gain to frame... easy as pi */ 00095 ast_frame_adjust_volume(frame, *gain); 00096 } 00097 00098 return 0; 00099 }
static int volume_write | ( | struct ast_channel * | chan, | |
const char * | cmd, | |||
char * | data, | |||
const char * | value | |||
) | [static] |
Definition at line 101 of file func_volume.c.
References 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_datastore_alloc(), ast_datastore_free(), ast_set_flag, volume_information::audiohook, chan, ast_datastore::data, volume_information::rx_gain, volume_information::tx_gain, volume_callback(), and volume_datastore.
00102 { 00103 struct ast_datastore *datastore = NULL; 00104 struct volume_information *vi = NULL; 00105 int is_new = 0; 00106 00107 if (!(datastore = ast_channel_datastore_find(chan, &volume_datastore, NULL))) { 00108 /* Allocate a new datastore to hold the reference to this volume and audiohook information */ 00109 if (!(datastore = ast_datastore_alloc(&volume_datastore, NULL))) 00110 return 0; 00111 if (!(vi = ast_calloc(1, sizeof(*vi)))) { 00112 ast_datastore_free(datastore); 00113 return 0; 00114 } 00115 ast_audiohook_init(&vi->audiohook, AST_AUDIOHOOK_TYPE_MANIPULATE, "Volume"); 00116 vi->audiohook.manipulate_callback = volume_callback; 00117 ast_set_flag(&vi->audiohook, AST_AUDIOHOOK_WANTS_DTMF); 00118 is_new = 1; 00119 } else { 00120 vi = datastore->data; 00121 } 00122 00123 /* Adjust gain on volume information structure */ 00124 if (!strcasecmp(data, "tx")) 00125 vi->tx_gain = atoi(value); 00126 else if (!strcasecmp(data, "rx")) 00127 vi->rx_gain = atoi(value); 00128 00129 if (is_new) { 00130 datastore->data = vi; 00131 ast_channel_datastore_add(chan, datastore); 00132 ast_audiohook_attach(chan, &vi->audiohook); 00133 } 00134 00135 return 0; 00136 }
struct ast_module_info __mod_info = { .name = AST_MODULE, .flags = AST_MODFLAG_DEFAULT , .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 = "a9c98e5d177805051735cb5b0b16b0a0" , .load = load_module, .unload = unload_module, } [static] |
Definition at line 160 of file func_volume.c.
struct ast_module_info* ast_module_info = &__mod_info [static] |
Definition at line 160 of file func_volume.c.
struct ast_datastore_info volume_datastore [static] |
Initial value:
{ .type = "volume", .destroy = destroy_callback }
Definition at line 57 of file func_volume.c.
Referenced by volume_callback(), and volume_write().
struct ast_custom_function volume_function [static] |