#include "asterisk.h"
#include "asterisk/module.h"
#include "asterisk/translate.h"
#include "asterisk/alaw.h"
#include "asterisk/ulaw.h"
#include "asterisk/utils.h"
#include "ulaw_slin_ex.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 struct ast_frame * | alawtoulaw_sample (void) |
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 struct ast_frame * | ulawtoalaw_sample (void) |
static int | unload_module (void) |
standard module glue | |
Variables | |
static struct ast_module_info | __mod_info = { .name = AST_MODULE, .flags = AST_MODFLAG_DEFAULT , .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 = "068e67f60f50dd9ee86464c05884a49d" , .load = load_module, .unload = unload_module, } |
static unsigned char | a2mu [256] |
static struct ast_translator | alawtoulaw |
static const 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 159 of file codec_a_mu.c.
static void __unreg_module | ( | void | ) | [static] |
Definition at line 159 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, and ast_trans_pvt::samples.
00047 { 00048 int x = f->samples; 00049 unsigned char *src = f->data; 00050 unsigned char *dst = (unsigned char *)pvt->outbuf + 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 struct ast_frame* alawtoulaw_sample | ( | void | ) | [static] |
Definition at line 80 of file codec_a_mu.c.
References AST_FORMAT_ALAW, AST_FRAME_VOICE, f, and ulaw_slin_ex.
00081 { 00082 static struct ast_frame f; 00083 f.frametype = AST_FRAME_VOICE; 00084 f.subclass = AST_FORMAT_ALAW; 00085 f.datalen = sizeof(ulaw_slin_ex); 00086 f.samples = sizeof(ulaw_slin_ex); 00087 f.mallocd = 0; 00088 f.offset = 0; 00089 f.src = __PRETTY_FUNCTION__; 00090 f.data = ulaw_slin_ex; /* XXX what ? */ 00091 return &f; 00092 }
static int load_module | ( | void | ) | [static] |
Definition at line 140 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.
00141 { 00142 int res; 00143 int x; 00144 00145 for (x=0;x<256;x++) { 00146 mu2a[x] = AST_LIN2A(AST_MULAW(x)); 00147 a2mu[x] = AST_LIN2MU(AST_ALAW(x)); 00148 } 00149 res = ast_register_translator(&alawtoulaw); 00150 if (!res) 00151 res = ast_register_translator(&ulawtoalaw); 00152 else 00153 ast_unregister_translator(&alawtoulaw); 00154 if (res) 00155 return AST_MODULE_LOAD_FAILURE; 00156 return AST_MODULE_LOAD_SUCCESS; 00157 }
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, and ast_trans_pvt::samples.
00063 { 00064 int x = f->samples; 00065 unsigned char *src = f->data; 00066 unsigned char *dst = (unsigned char *)pvt->outbuf + 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 struct ast_frame* ulawtoalaw_sample | ( | void | ) | [static] |
Definition at line 94 of file codec_a_mu.c.
References AST_FORMAT_ULAW, AST_FRAME_VOICE, f, and ulaw_slin_ex.
00095 { 00096 static struct ast_frame f; 00097 f.frametype = AST_FRAME_VOICE; 00098 f.subclass = AST_FORMAT_ULAW; 00099 f.datalen = sizeof(ulaw_slin_ex); 00100 f.samples = sizeof(ulaw_slin_ex); 00101 f.mallocd = 0; 00102 f.offset = 0; 00103 f.src = __PRETTY_FUNCTION__; 00104 f.data = ulaw_slin_ex; 00105 return &f; 00106 }
static int unload_module | ( | void | ) | [static] |
standard module glue
Definition at line 130 of file codec_a_mu.c.
References alawtoulaw, ast_unregister_translator(), and ulawtoalaw.
00131 { 00132 int res; 00133 00134 res = ast_unregister_translator(&ulawtoalaw); 00135 res |= ast_unregister_translator(&alawtoulaw); 00136 00137 return res; 00138 }
struct ast_module_info __mod_info = { .name = AST_MODULE, .flags = AST_MODFLAG_DEFAULT , .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 = "068e67f60f50dd9ee86464c05884a49d" , .load = load_module, .unload = unload_module, } [static] |
Definition at line 159 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] |
const struct ast_module_info* ast_module_info = &__mod_info [static] |
Definition at line 159 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] |