#include "asterisk.h"
#include "asterisk/module.h"
#include "asterisk/translate.h"
#include "asterisk/alaw.h"
#include "asterisk/ulaw.h"
#include "asterisk/utils.h"
#include "ex_ulaw.h"
#include "ex_alaw.h"
Go to the source code of this file.
Defines | |
#define | BUFFER_SAMPLES 8000 |
Functions | |
static void | __reg_module (void) |
static void | __unreg_module (void) |
static int | alawtoulaw_framein (struct ast_trans_pvt *pvt, struct ast_frame *f) |
convert frame data and store into the buffer | |
static int | load_module (void) |
static int | ulawtoalaw_framein (struct ast_trans_pvt *pvt, struct ast_frame *f) |
convert frame data and store into the buffer | |
static int | unload_module (void) |
standard module glue | |
Variables | |
static struct ast_module_info | __mod_info = { .name = AST_MODULE, .flags = AST_MODFLAG_LOAD_ORDER , .description = "A-law and Mulaw direct Coder/Decoder" , .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 = "8586c2a7d357cb591cc3a6607a8f62d1" , .load = load_module, .unload = unload_module, .load_pri = AST_MODPRI_DEFAULT, } |
static unsigned char | a2mu [256] |
static struct ast_translator | alawtoulaw |
static struct ast_module_info * | ast_module_info = &__mod_info |
static unsigned char | mu2a [256] |
static struct ast_translator | ulawtoalaw |
Definition in file codec_a_mu.c.
#define BUFFER_SAMPLES 8000 |
Definition at line 36 of file codec_a_mu.c.
Referenced by gsmtolin_framein(), ilbctolin_framein(), lintogsm_framein(), lintolpc10_framein(), lpc10tolin_framein(), and speextolin_framein().
static void __reg_module | ( | void | ) | [static] |
Definition at line 128 of file codec_a_mu.c.
static void __unreg_module | ( | void | ) | [static] |
Definition at line 128 of file codec_a_mu.c.
static int alawtoulaw_framein | ( | struct ast_trans_pvt * | pvt, | |
struct ast_frame * | f | |||
) | [static] |
convert frame data and store into the buffer
Definition at line 46 of file codec_a_mu.c.
References ast_trans_pvt::datalen, f, ast_trans_pvt::outbuf, ast_trans_pvt::samples, and ast_trans_pvt::uc.
00047 { 00048 int x = f->samples; 00049 unsigned char *src = f->data.ptr; 00050 unsigned char *dst = pvt->outbuf.uc + pvt->samples; 00051 00052 pvt->samples += x; 00053 pvt->datalen += x; 00054 00055 while (x--) 00056 *dst++ = a2mu[*src++]; 00057 00058 return 0; 00059 }
static int load_module | ( | void | ) | [static] |
Definition at line 109 of file codec_a_mu.c.
References alawtoulaw, AST_ALAW, AST_LIN2A, AST_LIN2MU, AST_MODULE_LOAD_FAILURE, AST_MODULE_LOAD_SUCCESS, AST_MULAW, ast_register_translator, ast_unregister_translator(), and ulawtoalaw.
00110 { 00111 int res; 00112 int x; 00113 00114 for (x=0;x<256;x++) { 00115 mu2a[x] = AST_LIN2A(AST_MULAW(x)); 00116 a2mu[x] = AST_LIN2MU(AST_ALAW(x)); 00117 } 00118 res = ast_register_translator(&alawtoulaw); 00119 if (!res) 00120 res = ast_register_translator(&ulawtoalaw); 00121 else 00122 ast_unregister_translator(&alawtoulaw); 00123 if (res) 00124 return AST_MODULE_LOAD_FAILURE; 00125 return AST_MODULE_LOAD_SUCCESS; 00126 }
static int ulawtoalaw_framein | ( | struct ast_trans_pvt * | pvt, | |
struct ast_frame * | f | |||
) | [static] |
convert frame data and store into the buffer
Definition at line 62 of file codec_a_mu.c.
References ast_trans_pvt::datalen, f, ast_trans_pvt::outbuf, ast_trans_pvt::samples, and ast_trans_pvt::uc.
00063 { 00064 int x = f->samples; 00065 unsigned char *src = f->data.ptr; 00066 unsigned char *dst = pvt->outbuf.uc + pvt->samples; 00067 00068 pvt->samples += x; 00069 pvt->datalen += x; 00070 00071 while (x--) 00072 *dst++ = mu2a[*src++]; 00073 00074 return 0; 00075 }
static int unload_module | ( | void | ) | [static] |
standard module glue
Definition at line 99 of file codec_a_mu.c.
References alawtoulaw, ast_unregister_translator(), and ulawtoalaw.
00100 { 00101 int res; 00102 00103 res = ast_unregister_translator(&ulawtoalaw); 00104 res |= ast_unregister_translator(&alawtoulaw); 00105 00106 return res; 00107 }
struct ast_module_info __mod_info = { .name = AST_MODULE, .flags = AST_MODFLAG_LOAD_ORDER , .description = "A-law and Mulaw direct Coder/Decoder" , .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 = "8586c2a7d357cb591cc3a6607a8f62d1" , .load = load_module, .unload = unload_module, .load_pri = AST_MODPRI_DEFAULT, } [static] |
Definition at line 128 of file codec_a_mu.c.
unsigned char a2mu[256] [static] |
Definition at line 39 of file codec_a_mu.c.
struct ast_translator alawtoulaw [static] |
struct ast_module_info* ast_module_info = &__mod_info [static] |
Definition at line 128 of file codec_a_mu.c.
unsigned char mu2a[256] [static] |
Definition at line 38 of file codec_a_mu.c.
struct ast_translator ulawtoalaw [static] |