#include "asterisk.h"
#include "asterisk/module.h"
#include "asterisk/config.h"
#include "asterisk/translate.h"
#include "asterisk/alaw.h"
#include "asterisk/utils.h"
#include "asterisk/slin.h"
#include "ex_alaw.h"
Go to the source code of this file.
Defines | |
#define | BUFFER_SAMPLES 8096 |
Functions | |
static void | __reg_module (void) |
static void | __unreg_module (void) |
static int | alawtolin_framein (struct ast_trans_pvt *pvt, struct ast_frame *f) |
decode frame into lin and fill output buffer. | |
static int | lintoalaw_framein (struct ast_trans_pvt *pvt, struct ast_frame *f) |
convert and store input samples in output buffer | |
static int | load_module (void) |
static int | reload (void) |
standard module stuff | |
static int | unload_module (void) |
Variables | |
static struct ast_module_info | __mod_info = { .name = AST_MODULE, .flags = AST_MODFLAG_DEFAULT , .description = "A-law 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, .reload = reload, } |
static struct ast_translator | alawtolin |
static struct ast_module_info * | ast_module_info = &__mod_info |
static struct ast_translator | lintoalaw |
Definition in file codec_alaw.c.
#define BUFFER_SAMPLES 8096 |
Definition at line 36 of file codec_alaw.c.
static void __reg_module | ( | void | ) | [static] |
Definition at line 129 of file codec_alaw.c.
static void __unreg_module | ( | void | ) | [static] |
Definition at line 129 of file codec_alaw.c.
static int alawtolin_framein | ( | struct ast_trans_pvt * | pvt, | |
struct ast_frame * | f | |||
) | [static] |
decode frame into lin and fill output buffer.
Definition at line 43 of file codec_alaw.c.
References AST_ALAW, ast_trans_pvt::datalen, f, ast_trans_pvt::i16, ast_trans_pvt::outbuf, and ast_trans_pvt::samples.
00044 { 00045 int i = f->samples; 00046 unsigned char *src = f->data.ptr; 00047 int16_t *dst = pvt->outbuf.i16 + pvt->samples; 00048 00049 pvt->samples += i; 00050 pvt->datalen += i * 2; /* 2 bytes/sample */ 00051 00052 while (i--) 00053 *dst++ = AST_ALAW(*src++); 00054 00055 return 0; 00056 }
static int lintoalaw_framein | ( | struct ast_trans_pvt * | pvt, | |
struct ast_frame * | f | |||
) | [static] |
convert and store input samples in output buffer
Definition at line 59 of file codec_alaw.c.
References AST_LIN2A, ast_trans_pvt::c, ast_trans_pvt::datalen, f, ast_trans_pvt::outbuf, and ast_trans_pvt::samples.
00060 { 00061 int i = f->samples; 00062 char *dst = pvt->outbuf.c + pvt->samples; 00063 int16_t *src = f->data.ptr; 00064 00065 pvt->samples += i; 00066 pvt->datalen += i; /* 1 byte/sample */ 00067 00068 while (i--) 00069 *dst++ = AST_LIN2A(*src++); 00070 00071 return 0; 00072 }
static int load_module | ( | void | ) | [static] |
Definition at line 111 of file codec_alaw.c.
References alawtolin, AST_MODULE_LOAD_FAILURE, AST_MODULE_LOAD_SUCCESS, ast_register_translator, ast_unregister_translator(), and lintoalaw.
00112 { 00113 int res; 00114 00115 res = ast_register_translator(&alawtolin); 00116 if (!res) 00117 res = ast_register_translator(&lintoalaw); 00118 else 00119 ast_unregister_translator(&alawtolin); 00120 if (res) 00121 return AST_MODULE_LOAD_FAILURE; 00122 return AST_MODULE_LOAD_SUCCESS; 00123 }
static int reload | ( | void | ) | [static] |
standard module stuff
Definition at line 96 of file codec_alaw.c.
References AST_MODULE_LOAD_SUCCESS.
00097 { 00098 return AST_MODULE_LOAD_SUCCESS; 00099 }
static int unload_module | ( | void | ) | [static] |
Definition at line 101 of file codec_alaw.c.
References alawtolin, ast_unregister_translator(), and lintoalaw.
00102 { 00103 int res; 00104 00105 res = ast_unregister_translator(&lintoalaw); 00106 res |= ast_unregister_translator(&alawtolin); 00107 00108 return res; 00109 }
struct ast_module_info __mod_info = { .name = AST_MODULE, .flags = AST_MODFLAG_DEFAULT , .description = "A-law 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, .reload = reload, } [static] |
Definition at line 129 of file codec_alaw.c.
struct ast_translator alawtolin [static] |
struct ast_module_info* ast_module_info = &__mod_info [static] |
Definition at line 129 of file codec_alaw.c.
struct ast_translator lintoalaw [static] |