#include "asterisk.h"
#include "asterisk/translate.h"
#include "asterisk/module.h"
#include "asterisk/utils.h"
#include "ilbc/iLBC_encode.h"
#include "ilbc/iLBC_decode.h"
#include "asterisk/slin.h"
#include "ex_ilbc.h"
Go to the source code of this file.
Data Structures | |
struct | ilbc_coder_pvt |
Defines | |
#define | BUFFER_SAMPLES 8000 |
#define | ILBC_FRAME_LEN 50 |
#define | ILBC_MS 30 |
#define | ILBC_SAMPLES 240 |
#define | USE_ILBC_ENHANCER 0 |
Functions | |
static void | __reg_module (void) |
static void | __unreg_module (void) |
static int | ilbctolin_framein (struct ast_trans_pvt *pvt, struct ast_frame *f) |
decode a frame and store in outbuf | |
static int | ilbctolin_new (struct ast_trans_pvt *pvt) |
static int | lintoilbc_framein (struct ast_trans_pvt *pvt, struct ast_frame *f) |
store a frame into a temporary buffer, for later decoding | |
static struct ast_frame * | lintoilbc_frameout (struct ast_trans_pvt *pvt) |
encode the temporary buffer and generate a frame | |
static int | lintoilbc_new (struct ast_trans_pvt *pvt) |
static int | load_module (void) |
static int | unload_module (void) |
Variables | |
static struct ast_module_info | __mod_info = { .name = AST_MODULE, .flags = AST_MODFLAG_LOAD_ORDER , .description = "iLBC 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 struct ast_module_info * | ast_module_info = &__mod_info |
static struct ast_translator | ilbctolin |
static struct ast_translator | lintoilbc |
Definition in file codec_ilbc.c.
#define BUFFER_SAMPLES 8000 |
Definition at line 49 of file codec_ilbc.c.
#define ILBC_FRAME_LEN 50 |
Definition at line 47 of file codec_ilbc.c.
Referenced by ilbctolin_framein(), and lintoilbc_frameout().
#define ILBC_MS 30 |
#define ILBC_SAMPLES 240 |
Definition at line 48 of file codec_ilbc.c.
Referenced by ilbc_read(), ilbc_sample(), ilbc_seek(), ilbc_tell(), ilbctolin_framein(), and lintoilbc_frameout().
#define USE_ILBC_ENHANCER 0 |
static void __reg_module | ( | void | ) | [static] |
Definition at line 215 of file codec_ilbc.c.
static void __unreg_module | ( | void | ) | [static] |
Definition at line 215 of file codec_ilbc.c.
static int ilbctolin_framein | ( | struct ast_trans_pvt * | pvt, | |
struct ast_frame * | f | |||
) | [static] |
decode a frame and store in outbuf
Definition at line 81 of file codec_ilbc.c.
References ast_log(), BUFFER_SAMPLES, ast_trans_pvt::datalen, ilbc_coder_pvt::dec, f, ast_trans_pvt::i16, ILBC_FRAME_LEN, ILBC_SAMPLES, LOG_DEBUG, LOG_WARNING, ast_trans_pvt::outbuf, ast_trans_pvt::pvt, and ast_trans_pvt::samples.
00082 { 00083 struct ilbc_coder_pvt *tmp = pvt->pvt; 00084 int plc_mode = 1; /* 1 = normal data, 0 = plc */ 00085 /* Assuming there's space left, decode into the current buffer at 00086 the tail location. Read in as many frames as there are */ 00087 int x,i; 00088 int16_t *dst = pvt->outbuf.i16; 00089 float tmpf[ILBC_SAMPLES]; 00090 00091 if (!f->data.ptr && f->datalen) { 00092 ast_log(LOG_DEBUG, "issue 16070, ILIB ERROR. data = NULL datalen = %d src = %s\n", f->datalen, f->src ? f->src : "no src set"); 00093 f->datalen = 0; 00094 } 00095 00096 if (f->datalen == 0) { /* native PLC, set fake f->datalen and clear plc_mode */ 00097 f->datalen = ILBC_FRAME_LEN; 00098 f->samples = ILBC_SAMPLES; 00099 plc_mode = 0; /* do native plc */ 00100 pvt->samples += ILBC_SAMPLES; 00101 } 00102 00103 if (f->datalen % ILBC_FRAME_LEN) { 00104 ast_log(LOG_WARNING, "Huh? An ilbc frame that isn't a multiple of 50 bytes long from %s (%d)?\n", f->src, f->datalen); 00105 return -1; 00106 } 00107 00108 for (x=0; x < f->datalen ; x += ILBC_FRAME_LEN) { 00109 if (pvt->samples + ILBC_SAMPLES > BUFFER_SAMPLES) { 00110 ast_log(LOG_WARNING, "Out of buffer space\n"); 00111 return -1; 00112 } 00113 iLBC_decode(tmpf, plc_mode ? f->data.ptr + x : NULL, &tmp->dec, plc_mode); 00114 for ( i=0; i < ILBC_SAMPLES; i++) 00115 dst[pvt->samples + i] = tmpf[i]; 00116 pvt->samples += ILBC_SAMPLES; 00117 pvt->datalen += 2*ILBC_SAMPLES; 00118 } 00119 return 0; 00120 }
static int ilbctolin_new | ( | struct ast_trans_pvt * | pvt | ) | [static] |
Definition at line 71 of file codec_ilbc.c.
References ilbc_coder_pvt::dec, ILBC_MS, ast_trans_pvt::pvt, and USE_ILBC_ENHANCER.
00072 { 00073 struct ilbc_coder_pvt *tmp = pvt->pvt; 00074 00075 initDecode(&tmp->dec, ILBC_MS, USE_ILBC_ENHANCER); 00076 00077 return 0; 00078 }
static int lintoilbc_framein | ( | struct ast_trans_pvt * | pvt, | |
struct ast_frame * | f | |||
) | [static] |
store a frame into a temporary buffer, for later decoding
Definition at line 123 of file codec_ilbc.c.
References ilbc_coder_pvt::buf, f, ast_trans_pvt::pvt, and ast_trans_pvt::samples.
00124 { 00125 struct ilbc_coder_pvt *tmp = pvt->pvt; 00126 00127 /* Just add the frames to our stream */ 00128 /* XXX We should look at how old the rest of our stream is, and if it 00129 is too old, then we should overwrite it entirely, otherwise we can 00130 get artifacts of earlier talk that do not belong */ 00131 memcpy(tmp->buf + pvt->samples, f->data.ptr, f->datalen); 00132 pvt->samples += f->samples; 00133 return 0; 00134 }
static struct ast_frame* lintoilbc_frameout | ( | struct ast_trans_pvt * | pvt | ) | [static] |
encode the temporary buffer and generate a frame
Definition at line 137 of file codec_ilbc.c.
References ast_trans_frameout(), ilbc_coder_pvt::buf, ilbc_coder_pvt::enc, ILBC_FRAME_LEN, ILBC_SAMPLES, ast_trans_pvt::outbuf, ast_trans_pvt::pvt, ast_trans_pvt::samples, and ast_trans_pvt::uc.
00138 { 00139 struct ilbc_coder_pvt *tmp = pvt->pvt; 00140 int datalen = 0; 00141 int samples = 0; 00142 00143 /* We can't work on anything less than a frame in size */ 00144 if (pvt->samples < ILBC_SAMPLES) 00145 return NULL; 00146 while (pvt->samples >= ILBC_SAMPLES) { 00147 float tmpf[ILBC_SAMPLES]; 00148 int i; 00149 00150 /* Encode a frame of data */ 00151 for (i = 0 ; i < ILBC_SAMPLES ; i++) 00152 tmpf[i] = tmp->buf[samples + i]; 00153 iLBC_encode( pvt->outbuf.uc + datalen, tmpf, &tmp->enc); 00154 00155 datalen += ILBC_FRAME_LEN; 00156 samples += ILBC_SAMPLES; 00157 pvt->samples -= ILBC_SAMPLES; 00158 } 00159 00160 /* Move the data at the end of the buffer to the front */ 00161 if (pvt->samples) 00162 memmove(tmp->buf, tmp->buf + samples, pvt->samples * 2); 00163 00164 return ast_trans_frameout(pvt, datalen, samples); 00165 }
static int lintoilbc_new | ( | struct ast_trans_pvt * | pvt | ) | [static] |
Definition at line 62 of file codec_ilbc.c.
References ilbc_coder_pvt::enc, ILBC_MS, and ast_trans_pvt::pvt.
00063 { 00064 struct ilbc_coder_pvt *tmp = pvt->pvt; 00065 00066 initEncode(&tmp->enc, ILBC_MS); 00067 00068 return 0; 00069 }
static int load_module | ( | void | ) | [static] |
Definition at line 201 of file codec_ilbc.c.
References AST_MODULE_LOAD_FAILURE, AST_MODULE_LOAD_SUCCESS, ast_register_translator, ast_unregister_translator(), ilbctolin, and lintoilbc.
00202 { 00203 int res; 00204 00205 res = ast_register_translator(&ilbctolin); 00206 if (!res) 00207 res=ast_register_translator(&lintoilbc); 00208 else 00209 ast_unregister_translator(&ilbctolin); 00210 if (res) 00211 return AST_MODULE_LOAD_FAILURE; 00212 return AST_MODULE_LOAD_SUCCESS; 00213 }
static int unload_module | ( | void | ) | [static] |
Definition at line 191 of file codec_ilbc.c.
References ast_unregister_translator(), ilbctolin, and lintoilbc.
00192 { 00193 int res; 00194 00195 res = ast_unregister_translator(&lintoilbc); 00196 res |= ast_unregister_translator(&ilbctolin); 00197 00198 return res; 00199 }
struct ast_module_info __mod_info = { .name = AST_MODULE, .flags = AST_MODFLAG_LOAD_ORDER , .description = "iLBC 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 215 of file codec_ilbc.c.
struct ast_module_info* ast_module_info = &__mod_info [static] |
Definition at line 215 of file codec_ilbc.c.
struct ast_translator ilbctolin [static] |
struct ast_translator lintoilbc [static] |