#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 = "88eaa8f5c1bd988bedd71113385e0886" , .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 40 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 132 of file codec_a_mu.c.
static void __unreg_module | ( | void | ) | [static] |
Definition at line 132 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 50 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.
00051 { 00052 int x = f->samples; 00053 unsigned char *src = f->data.ptr; 00054 unsigned char *dst = pvt->outbuf.uc + pvt->samples; 00055 00056 pvt->samples += x; 00057 pvt->datalen += x; 00058 00059 while (x--) 00060 *dst++ = a2mu[*src++]; 00061 00062 return 0; 00063 }
static int load_module | ( | void | ) | [static] |
Definition at line 113 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.
00114 { 00115 int res; 00116 int x; 00117 00118 for (x=0;x<256;x++) { 00119 mu2a[x] = AST_LIN2A(AST_MULAW(x)); 00120 a2mu[x] = AST_LIN2MU(AST_ALAW(x)); 00121 } 00122 res = ast_register_translator(&alawtoulaw); 00123 if (!res) 00124 res = ast_register_translator(&ulawtoalaw); 00125 else 00126 ast_unregister_translator(&alawtoulaw); 00127 if (res) 00128 return AST_MODULE_LOAD_FAILURE; 00129 return AST_MODULE_LOAD_SUCCESS; 00130 }
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 66 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.
00067 { 00068 int x = f->samples; 00069 unsigned char *src = f->data.ptr; 00070 unsigned char *dst = pvt->outbuf.uc + pvt->samples; 00071 00072 pvt->samples += x; 00073 pvt->datalen += x; 00074 00075 while (x--) 00076 *dst++ = mu2a[*src++]; 00077 00078 return 0; 00079 }
static int unload_module | ( | void | ) | [static] |
standard module glue
Definition at line 103 of file codec_a_mu.c.
References alawtoulaw, ast_unregister_translator(), and ulawtoalaw.
00104 { 00105 int res; 00106 00107 res = ast_unregister_translator(&ulawtoalaw); 00108 res |= ast_unregister_translator(&alawtoulaw); 00109 00110 return res; 00111 }
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 = "88eaa8f5c1bd988bedd71113385e0886" , .load = load_module, .unload = unload_module, .load_pri = AST_MODPRI_DEFAULT, } [static] |
Definition at line 132 of file codec_a_mu.c.
unsigned char a2mu[256] [static] |
Definition at line 43 of file codec_a_mu.c.
struct ast_translator alawtoulaw [static] |
struct ast_module_info* ast_module_info = &__mod_info [static] |
Definition at line 132 of file codec_a_mu.c.
unsigned char mu2a[256] [static] |
Definition at line 42 of file codec_a_mu.c.
struct ast_translator ulawtoalaw [static] |