Mon Jun 27 16:51:12 2011

Asterisk developer's documentation


codec_speex.c File Reference

Translate between signed linear and Speex (Open Codec). More...

#include "asterisk.h"
#include <speex/speex.h>
#include "asterisk/translate.h"
#include "asterisk/module.h"
#include "asterisk/config.h"
#include "asterisk/utils.h"
#include "asterisk/slin.h"
#include "ex_speex.h"

Go to the source code of this file.

Data Structures

struct  speex_coder_pvt

Defines

#define BUFFER_SAMPLES   8000
#define SPEEX_SAMPLES   160
#define TYPE_HIGH   0x0
#define TYPE_LOW   0x1
#define TYPE_MASK   0x3
#define TYPE_SILENCE   0x2

Functions

static void __reg_module (void)
static void __unreg_module (void)
static int lin16tospeexwb_new (struct ast_trans_pvt *pvt)
static void lintospeex_destroy (struct ast_trans_pvt *arg)
static int lintospeex_framein (struct ast_trans_pvt *pvt, struct ast_frame *f)
 store input frame in work buffer
static struct ast_framelintospeex_frameout (struct ast_trans_pvt *pvt)
 convert work buffer and produce output frame
static int lintospeex_new (struct ast_trans_pvt *pvt)
static int load_module (void)
static int parse_config (int reload)
static int reload (void)
static int speex_decoder_construct (struct ast_trans_pvt *pvt, const SpeexMode *profile)
static int speex_encoder_construct (struct ast_trans_pvt *pvt, const SpeexMode *profile, int sampling_rate)
static void speextolin_destroy (struct ast_trans_pvt *arg)
static int speextolin_framein (struct ast_trans_pvt *pvt, struct ast_frame *f)
 convert and store into outbuf
static int speextolin_new (struct ast_trans_pvt *pvt)
static int speexwbtolin16_new (struct ast_trans_pvt *pvt)
static int unload_module (void)

Variables

static struct ast_module_info __mod_info = { .name = AST_MODULE, .flags = AST_MODFLAG_DEFAULT , .description = "Speex 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 int abr = 0
static struct ast_module_infoast_module_info = &__mod_info
static int complexity = 2
static int dtx = 0
static int enhancement = 0
static struct ast_translator lin16tospeexwb
static struct ast_translator lintospeex
static int pp_agc = 0
static float pp_agc_level = 8000
static int pp_denoise = 0
static int pp_dereverb = 0
static float pp_dereverb_decay = 0.4
static float pp_dereverb_level = 0.3
static int pp_vad = 0
static int preproc = 0
static int quality = 3
static struct ast_translator speextolin
static struct ast_translator speexwbtolin16
static int vad = 0
static int vbr = 0
static float vbr_quality = 4


Detailed Description

Translate between signed linear and Speex (Open Codec).

Note:
This work was motivated by Jeremy McNamara hacked to be configurable by anthm and bkw 9/28/2004
ExtRef:
The Speex library - http://www.speex.org

Definition in file codec_speex.c.


Define Documentation

#define BUFFER_SAMPLES   8000

Definition at line 80 of file codec_speex.c.

#define SPEEX_SAMPLES   160

Definition at line 81 of file codec_speex.c.

Referenced by speex16_sample(), and speex_sample().

#define TYPE_HIGH   0x0

Definition at line 76 of file codec_speex.c.

Referenced by g723_len().

#define TYPE_LOW   0x1

Definition at line 77 of file codec_speex.c.

Referenced by g723_len().

#define TYPE_MASK   0x3

Definition at line 78 of file codec_speex.c.

Referenced by g723_len().

#define TYPE_SILENCE   0x2

Definition at line 75 of file codec_speex.c.

Referenced by g723_len().


Function Documentation

static void __reg_module ( void   )  [static]

Definition at line 520 of file codec_speex.c.

static void __unreg_module ( void   )  [static]

Definition at line 520 of file codec_speex.c.

static int lin16tospeexwb_new ( struct ast_trans_pvt pvt  )  [static]

Definition at line 146 of file codec_speex.c.

References speex_encoder_construct().

00147 {
00148    return speex_encoder_construct(pvt, &speex_wb_mode, 16000);
00149 }

static void lintospeex_destroy ( struct ast_trans_pvt arg  )  [static]

Definition at line 320 of file codec_speex.c.

References speex_coder_pvt::bits, preproc, ast_trans_pvt::pvt, and speex_coder_pvt::speex.

00321 {
00322    struct speex_coder_pvt *pvt = arg->pvt;
00323 #ifdef _SPEEX_TYPES_H
00324    if (preproc)
00325       speex_preprocess_state_destroy(pvt->pp);
00326 #endif
00327    speex_encoder_destroy(pvt->speex);
00328    speex_bits_destroy(&pvt->bits);
00329 }

static int lintospeex_framein ( struct ast_trans_pvt pvt,
struct ast_frame f 
) [static]

store input frame in work buffer

Definition at line 234 of file codec_speex.c.

References speex_coder_pvt::buf, f, ast_trans_pvt::pvt, and ast_trans_pvt::samples.

00235 {
00236    struct speex_coder_pvt *tmp = pvt->pvt;
00237 
00238    /* XXX We should look at how old the rest of our stream is, and if it
00239       is too old, then we should overwrite it entirely, otherwise we can
00240       get artifacts of earlier talk that do not belong */
00241    memcpy(tmp->buf + pvt->samples, f->data.ptr, f->datalen);
00242    pvt->samples += f->samples;
00243    return 0;
00244 }

static struct ast_frame* lintospeex_frameout ( struct ast_trans_pvt pvt  )  [static]

convert work buffer and produce output frame

Definition at line 247 of file codec_speex.c.

References AST_FRAME_CNG, speex_coder_pvt::bits, speex_coder_pvt::buf, dtx, ast_trans_pvt::f, speex_coder_pvt::framesize, ast_frame::frametype, preproc, ast_trans_pvt::pvt, ast_frame::samples, ast_trans_pvt::samples, speex_coder_pvt::silent_state, and speex_coder_pvt::speex.

00248 {
00249    struct speex_coder_pvt *tmp = pvt->pvt;
00250    int is_speech=1;
00251    int datalen = 0;  /* output bytes */
00252    int samples = 0;  /* output samples */
00253 
00254    /* We can't work on anything less than a frame in size */
00255    if (pvt->samples < tmp->framesize)
00256       return NULL;
00257    speex_bits_reset(&tmp->bits);
00258    while (pvt->samples >= tmp->framesize) {
00259 #ifdef _SPEEX_TYPES_H
00260       /* Preprocess audio */
00261       if (preproc)
00262          is_speech = speex_preprocess(tmp->pp, tmp->buf + samples, NULL);
00263       /* Encode a frame of data */
00264       if (is_speech) {
00265          /* If DTX enabled speex_encode returns 0 during silence */
00266          is_speech = speex_encode_int(tmp->speex, tmp->buf + samples, &tmp->bits) || !dtx;
00267       } else {
00268          /* 5 zeros interpreted by Speex as silence (submode 0) */
00269          speex_bits_pack(&tmp->bits, 0, 5);
00270       }
00271 #else
00272       {
00273          float fbuf[1024];
00274          int x;
00275          /* Convert to floating point */
00276          for (x = 0; x < tmp->framesize; x++)
00277             fbuf[x] = tmp->buf[samples + x];
00278          /* Encode a frame of data */
00279          is_speech = speex_encode(tmp->speex, fbuf, &tmp->bits) || !dtx;
00280       }
00281 #endif
00282       samples += tmp->framesize;
00283       pvt->samples -= tmp->framesize;
00284    }
00285 
00286    /* Move the data at the end of the buffer to the front */
00287    if (pvt->samples)
00288       memmove(tmp->buf, tmp->buf + samples, pvt->samples * 2);
00289 
00290    /* Use AST_FRAME_CNG to signify the start of any silence period */
00291    if (is_speech) {
00292       tmp->silent_state = 0;
00293    } else {
00294       if (tmp->silent_state) {
00295          return NULL;
00296       } else {
00297          tmp->silent_state = 1;
00298          speex_bits_reset(&tmp->bits);
00299          memset(&pvt->f, 0, sizeof(pvt->f));
00300          pvt->f.frametype = AST_FRAME_CNG;
00301          pvt->f.samples = samples;
00302          /* XXX what now ? format etc... */
00303       }
00304    }
00305 
00306    /* Terminate bit stream */
00307    speex_bits_pack(&tmp->bits, 15, 5);
00308    datalen = speex_bits_write(&tmp->bits, pvt->outbuf.c, pvt->t->buf_size);
00309    return ast_trans_frameout(pvt, datalen, samples);
00310 }

static int lintospeex_new ( struct ast_trans_pvt pvt  )  [static]

Definition at line 141 of file codec_speex.c.

References speex_encoder_construct().

00142 {
00143    return speex_encoder_construct(pvt, &speex_nb_mode, 8000);
00144 }

static int load_module ( void   )  [static]

Definition at line 501 of file codec_speex.c.

References AST_MODULE_LOAD_DECLINE, ast_register_translator, lin16tospeexwb, lintospeex, parse_config(), speextolin, and speexwbtolin16.

00502 {
00503    int res = 0;
00504 
00505    if (parse_config(0))
00506       return AST_MODULE_LOAD_DECLINE;
00507 
00508    res |= ast_register_translator(&speextolin);
00509    res |= ast_register_translator(&lintospeex);
00510    res |= ast_register_translator(&speexwbtolin16);
00511    res |= ast_register_translator(&lin16tospeexwb);
00512 
00513    return res;
00514 }

static int parse_config ( int  reload  )  [static]

Definition at line 387 of file codec_speex.c.

References abr, ast_config_load, ast_log(), ast_true(), ast_variable_browse(), ast_verb, complexity, CONFIG_FLAG_FILEUNCHANGED, config_flags, CONFIG_STATUS_FILEINVALID, CONFIG_STATUS_FILEMISSING, CONFIG_STATUS_FILEUNCHANGED, dtx, enhancement, LOG_ERROR, pp_agc, pp_agc_level, pp_denoise, pp_dereverb, pp_dereverb_decay, pp_dereverb_level, pp_vad, preproc, quality, vad, var, vbr, and vbr_quality.

Referenced by load_module(), and reload().

00388 {
00389    struct ast_flags config_flags = { reload ? CONFIG_FLAG_FILEUNCHANGED : 0 };
00390    struct ast_config *cfg = ast_config_load("codecs.conf", config_flags);
00391    struct ast_variable *var;
00392    int res;
00393    float res_f;
00394 
00395    if (cfg == CONFIG_STATUS_FILEMISSING || cfg == CONFIG_STATUS_FILEUNCHANGED || cfg == CONFIG_STATUS_FILEINVALID)
00396       return 0;
00397 
00398    for (var = ast_variable_browse(cfg, "speex"); var; var = var->next) {
00399       if (!strcasecmp(var->name, "quality")) {
00400          res = abs(atoi(var->value));
00401          if (res > -1 && res < 11) {
00402             ast_verb(3, "CODEC SPEEX: Setting Quality to %d\n",res);
00403             quality = res;
00404          } else 
00405             ast_log(LOG_ERROR,"Error Quality must be 0-10\n");
00406       } else if (!strcasecmp(var->name, "complexity")) {
00407          res = abs(atoi(var->value));
00408          if (res > -1 && res < 11) {
00409             ast_verb(3, "CODEC SPEEX: Setting Complexity to %d\n",res);
00410             complexity = res;
00411          } else 
00412             ast_log(LOG_ERROR,"Error! Complexity must be 0-10\n");
00413       } else if (!strcasecmp(var->name, "vbr_quality")) {
00414          if (sscanf(var->value, "%30f", &res_f) == 1 && res_f >= 0 && res_f <= 10) {
00415             ast_verb(3, "CODEC SPEEX: Setting VBR Quality to %f\n",res_f);
00416             vbr_quality = res_f;
00417          } else
00418             ast_log(LOG_ERROR,"Error! VBR Quality must be 0-10\n");
00419       } else if (!strcasecmp(var->name, "abr_quality")) {
00420          ast_log(LOG_ERROR,"Error! ABR Quality setting obsolete, set ABR to desired bitrate\n");
00421       } else if (!strcasecmp(var->name, "enhancement")) {
00422          enhancement = ast_true(var->value) ? 1 : 0;
00423          ast_verb(3, "CODEC SPEEX: Perceptual Enhancement Mode. [%s]\n",enhancement ? "on" : "off");
00424       } else if (!strcasecmp(var->name, "vbr")) {
00425          vbr = ast_true(var->value) ? 1 : 0;
00426          ast_verb(3, "CODEC SPEEX: VBR Mode. [%s]\n",vbr ? "on" : "off");
00427       } else if (!strcasecmp(var->name, "abr")) {
00428          res = abs(atoi(var->value));
00429          if (res >= 0) {
00430                if (res > 0)
00431                ast_verb(3, "CODEC SPEEX: Setting ABR target bitrate to %d\n",res);
00432                else
00433                ast_verb(3, "CODEC SPEEX: Disabling ABR\n");
00434             abr = res;
00435          } else 
00436             ast_log(LOG_ERROR,"Error! ABR target bitrate must be >= 0\n");
00437       } else if (!strcasecmp(var->name, "vad")) {
00438          vad = ast_true(var->value) ? 1 : 0;
00439          ast_verb(3, "CODEC SPEEX: VAD Mode. [%s]\n",vad ? "on" : "off");
00440       } else if (!strcasecmp(var->name, "dtx")) {
00441          dtx = ast_true(var->value) ? 1 : 0;
00442          ast_verb(3, "CODEC SPEEX: DTX Mode. [%s]\n",dtx ? "on" : "off");
00443       } else if (!strcasecmp(var->name, "preprocess")) {
00444          preproc = ast_true(var->value) ? 1 : 0;
00445          ast_verb(3, "CODEC SPEEX: Preprocessing. [%s]\n",preproc ? "on" : "off");
00446       } else if (!strcasecmp(var->name, "pp_vad")) {
00447          pp_vad = ast_true(var->value) ? 1 : 0;
00448          ast_verb(3, "CODEC SPEEX: Preprocessor VAD. [%s]\n",pp_vad ? "on" : "off");
00449       } else if (!strcasecmp(var->name, "pp_agc")) {
00450          pp_agc = ast_true(var->value) ? 1 : 0;
00451          ast_verb(3, "CODEC SPEEX: Preprocessor AGC. [%s]\n",pp_agc ? "on" : "off");
00452       } else if (!strcasecmp(var->name, "pp_agc_level")) {
00453          if (sscanf(var->value, "%30f", &res_f) == 1 && res_f >= 0) {
00454             ast_verb(3, "CODEC SPEEX: Setting preprocessor AGC Level to %f\n",res_f);
00455             pp_agc_level = res_f;
00456          } else
00457             ast_log(LOG_ERROR,"Error! Preprocessor AGC Level must be >= 0\n");
00458       } else if (!strcasecmp(var->name, "pp_denoise")) {
00459          pp_denoise = ast_true(var->value) ? 1 : 0;
00460          ast_verb(3, "CODEC SPEEX: Preprocessor Denoise. [%s]\n",pp_denoise ? "on" : "off");
00461       } else if (!strcasecmp(var->name, "pp_dereverb")) {
00462          pp_dereverb = ast_true(var->value) ? 1 : 0;
00463          ast_verb(3, "CODEC SPEEX: Preprocessor Dereverb. [%s]\n",pp_dereverb ? "on" : "off");
00464       } else if (!strcasecmp(var->name, "pp_dereverb_decay")) {
00465          if (sscanf(var->value, "%30f", &res_f) == 1 && res_f >= 0) {
00466             ast_verb(3, "CODEC SPEEX: Setting preprocessor Dereverb Decay to %f\n",res_f);
00467             pp_dereverb_decay = res_f;
00468          } else
00469             ast_log(LOG_ERROR,"Error! Preprocessor Dereverb Decay must be >= 0\n");
00470       } else if (!strcasecmp(var->name, "pp_dereverb_level")) {
00471          if (sscanf(var->value, "%30f", &res_f) == 1 && res_f >= 0) {
00472             ast_verb(3, "CODEC SPEEX: Setting preprocessor Dereverb Level to %f\n",res_f);
00473             pp_dereverb_level = res_f;
00474          } else
00475             ast_log(LOG_ERROR,"Error! Preprocessor Dereverb Level must be >= 0\n");
00476       }
00477    }
00478    ast_config_destroy(cfg);
00479    return 0;
00480 }

static int reload ( void   )  [static]

Definition at line 482 of file codec_speex.c.

References AST_MODULE_LOAD_DECLINE, AST_MODULE_LOAD_SUCCESS, and parse_config().

00483 {
00484    if (parse_config(1))
00485       return AST_MODULE_LOAD_DECLINE;
00486    return AST_MODULE_LOAD_SUCCESS;
00487 }

static int speex_decoder_construct ( struct ast_trans_pvt pvt,
const SpeexMode *  profile 
) [static]

Definition at line 151 of file codec_speex.c.

References speex_coder_pvt::bits, speex_coder_pvt::framesize, ast_trans_pvt::pvt, and speex_coder_pvt::speex.

Referenced by speextolin_new(), and speexwbtolin16_new().

00152 {
00153    struct speex_coder_pvt *tmp = pvt->pvt;
00154    
00155    if (!(tmp->speex = speex_decoder_init(profile)))
00156       return -1;
00157 
00158    speex_bits_init(&tmp->bits);
00159    speex_decoder_ctl(tmp->speex, SPEEX_GET_FRAME_SIZE, &tmp->framesize);
00160    if (enhancement)
00161       speex_decoder_ctl(tmp->speex, SPEEX_SET_ENH, &enhancement);
00162 
00163    return 0;
00164 }

static int speex_encoder_construct ( struct ast_trans_pvt pvt,
const SpeexMode *  profile,
int  sampling_rate 
) [static]

Definition at line 100 of file codec_speex.c.

References speex_coder_pvt::bits, speex_coder_pvt::framesize, ast_trans_pvt::pvt, speex_coder_pvt::silent_state, and speex_coder_pvt::speex.

Referenced by lin16tospeexwb_new(), and lintospeex_new().

00101 {
00102    struct speex_coder_pvt *tmp = pvt->pvt;
00103 
00104    if (!(tmp->speex = speex_encoder_init(profile)))
00105       return -1;
00106 
00107    speex_bits_init(&tmp->bits);
00108    speex_bits_reset(&tmp->bits);
00109    speex_encoder_ctl(tmp->speex, SPEEX_GET_FRAME_SIZE, &tmp->framesize);
00110    speex_encoder_ctl(tmp->speex, SPEEX_SET_COMPLEXITY, &complexity);
00111 #ifdef _SPEEX_TYPES_H
00112    if (preproc) {
00113       tmp->pp = speex_preprocess_state_init(tmp->framesize, sampling_rate);
00114       speex_preprocess_ctl(tmp->pp, SPEEX_PREPROCESS_SET_VAD, &pp_vad);
00115       speex_preprocess_ctl(tmp->pp, SPEEX_PREPROCESS_SET_AGC, &pp_agc);
00116       speex_preprocess_ctl(tmp->pp, SPEEX_PREPROCESS_SET_AGC_LEVEL, &pp_agc_level);
00117       speex_preprocess_ctl(tmp->pp, SPEEX_PREPROCESS_SET_DENOISE, &pp_denoise);
00118       speex_preprocess_ctl(tmp->pp, SPEEX_PREPROCESS_SET_DEREVERB, &pp_dereverb);
00119       speex_preprocess_ctl(tmp->pp, SPEEX_PREPROCESS_SET_DEREVERB_DECAY, &pp_dereverb_decay);
00120       speex_preprocess_ctl(tmp->pp, SPEEX_PREPROCESS_SET_DEREVERB_LEVEL, &pp_dereverb_level);
00121    }
00122 #endif
00123    if (!abr && !vbr) {
00124       speex_encoder_ctl(tmp->speex, SPEEX_SET_QUALITY, &quality);
00125       if (vad)
00126          speex_encoder_ctl(tmp->speex, SPEEX_SET_VAD, &vad);
00127    }
00128    if (vbr) {
00129       speex_encoder_ctl(tmp->speex, SPEEX_SET_VBR, &vbr);
00130       speex_encoder_ctl(tmp->speex, SPEEX_SET_VBR_QUALITY, &vbr_quality);
00131    }
00132    if (abr)
00133       speex_encoder_ctl(tmp->speex, SPEEX_SET_ABR, &abr);
00134    if (dtx)
00135       speex_encoder_ctl(tmp->speex, SPEEX_SET_DTX, &dtx); 
00136    tmp->silent_state = 0;
00137 
00138    return 0;
00139 }

static void speextolin_destroy ( struct ast_trans_pvt arg  )  [static]

Definition at line 312 of file codec_speex.c.

References speex_coder_pvt::bits, ast_trans_pvt::pvt, and speex_coder_pvt::speex.

00313 {
00314    struct speex_coder_pvt *pvt = arg->pvt;
00315 
00316    speex_decoder_destroy(pvt->speex);
00317    speex_bits_destroy(&pvt->bits);
00318 }

static int speextolin_framein ( struct ast_trans_pvt pvt,
struct ast_frame f 
) [static]

convert and store into outbuf

Definition at line 177 of file codec_speex.c.

References ast_log(), speex_coder_pvt::bits, BUFFER_SAMPLES, ast_trans_pvt::datalen, f, speex_coder_pvt::framesize, ast_trans_pvt::i16, LOG_WARNING, ast_trans_pvt::outbuf, ast_trans_pvt::pvt, ast_trans_pvt::samples, and speex_coder_pvt::speex.

00178 {
00179    struct speex_coder_pvt *tmp = pvt->pvt;
00180 
00181    /* Assuming there's space left, decode into the current buffer at
00182       the tail location.  Read in as many frames as there are */
00183    int x;
00184    int res;
00185    int16_t *dst = pvt->outbuf.i16;
00186    /* XXX fout is a temporary buffer, may have different types */
00187 #ifdef _SPEEX_TYPES_H
00188    spx_int16_t fout[1024];
00189 #else
00190    float fout[1024];
00191 #endif
00192 
00193    if (f->datalen == 0) {  /* Native PLC interpolation */
00194       if (pvt->samples + tmp->framesize > BUFFER_SAMPLES) {
00195          ast_log(LOG_WARNING, "Out of buffer space\n");
00196          return -1;
00197       }
00198 #ifdef _SPEEX_TYPES_H
00199       speex_decode_int(tmp->speex, NULL, dst + pvt->samples);
00200 #else
00201       speex_decode(tmp->speex, NULL, fout);
00202       for (x=0;x<tmp->framesize;x++) {
00203          dst[pvt->samples + x] = (int16_t)fout[x];
00204       }
00205 #endif
00206       pvt->samples += tmp->framesize;
00207       pvt->datalen += 2 * tmp->framesize; /* 2 bytes/sample */
00208       return 0;
00209    }
00210 
00211    /* Read in bits */
00212    speex_bits_read_from(&tmp->bits, f->data.ptr, f->datalen);
00213    for (;;) {
00214 #ifdef _SPEEX_TYPES_H
00215       res = speex_decode_int(tmp->speex, &tmp->bits, fout);
00216 #else
00217       res = speex_decode(tmp->speex, &tmp->bits, fout);
00218 #endif
00219       if (res < 0)
00220          break;
00221       if (pvt->samples + tmp->framesize > BUFFER_SAMPLES) {
00222          ast_log(LOG_WARNING, "Out of buffer space\n");
00223          return -1;
00224       }
00225       for (x = 0 ; x < tmp->framesize; x++)
00226          dst[pvt->samples + x] = (int16_t)fout[x];
00227       pvt->samples += tmp->framesize;
00228       pvt->datalen += 2 * tmp->framesize; /* 2 bytes/sample */
00229    }
00230    return 0;
00231 }

static int speextolin_new ( struct ast_trans_pvt pvt  )  [static]

Definition at line 166 of file codec_speex.c.

References speex_decoder_construct().

00167 {
00168    return speex_decoder_construct(pvt, &speex_nb_mode);
00169 }

static int speexwbtolin16_new ( struct ast_trans_pvt pvt  )  [static]

Definition at line 171 of file codec_speex.c.

References speex_decoder_construct().

00172 {
00173    return speex_decoder_construct(pvt, &speex_wb_mode);
00174 }

static int unload_module ( void   )  [static]

Definition at line 489 of file codec_speex.c.

References ast_unregister_translator(), lin16tospeexwb, lintospeex, speextolin, and speexwbtolin16.

00490 {
00491    int res = 0;
00492 
00493    res |= ast_unregister_translator(&speextolin);
00494    res |= ast_unregister_translator(&lintospeex);
00495    res |= ast_unregister_translator(&speexwbtolin16);
00496    res |= ast_unregister_translator(&lin16tospeexwb);
00497 
00498    return res;
00499 }


Variable Documentation

struct ast_module_info __mod_info = { .name = AST_MODULE, .flags = AST_MODFLAG_DEFAULT , .description = "Speex 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 520 of file codec_speex.c.

int abr = 0 [static]

Definition at line 63 of file codec_speex.c.

Referenced by parse_config().

struct ast_module_info* ast_module_info = &__mod_info [static]

Definition at line 520 of file codec_speex.c.

int complexity = 2 [static]

Definition at line 58 of file codec_speex.c.

Referenced by parse_config().

int dtx = 0 [static]

Definition at line 64 of file codec_speex.c.

Referenced by lintospeex_frameout(), and parse_config().

int enhancement = 0 [static]

Definition at line 59 of file codec_speex.c.

Referenced by parse_config().

struct ast_translator lin16tospeexwb [static]

Definition at line 373 of file codec_speex.c.

Referenced by load_module(), and unload_module().

struct ast_translator lintospeex [static]

Definition at line 345 of file codec_speex.c.

Referenced by load_module(), and unload_module().

int pp_agc = 0 [static]

Definition at line 68 of file codec_speex.c.

Referenced by parse_config().

float pp_agc_level = 8000 [static]

Definition at line 69 of file codec_speex.c.

Referenced by parse_config().

int pp_denoise = 0 [static]

Definition at line 70 of file codec_speex.c.

Referenced by parse_config().

int pp_dereverb = 0 [static]

Definition at line 71 of file codec_speex.c.

Referenced by parse_config().

float pp_dereverb_decay = 0.4 [static]

Definition at line 72 of file codec_speex.c.

Referenced by parse_config().

float pp_dereverb_level = 0.3 [static]

Definition at line 73 of file codec_speex.c.

Referenced by parse_config().

int pp_vad = 0 [static]

Definition at line 67 of file codec_speex.c.

Referenced by parse_config().

int preproc = 0 [static]

Definition at line 66 of file codec_speex.c.

Referenced by lintospeex_destroy(), lintospeex_frameout(), and parse_config().

int quality = 3 [static]

Definition at line 57 of file codec_speex.c.

Referenced by ast_rtp_instance_set_stats_vars(), handle_request_bye(), parse_config(), and sip_hangup().

struct ast_translator speextolin [static]

Definition at line 331 of file codec_speex.c.

Referenced by load_module(), and unload_module().

struct ast_translator speexwbtolin16 [static]

Definition at line 359 of file codec_speex.c.

Referenced by load_module(), and unload_module().

int vad = 0 [static]

Definition at line 60 of file codec_speex.c.

Referenced by parse_config().

int vbr = 0 [static]

Definition at line 61 of file codec_speex.c.

Referenced by parse_config().

float vbr_quality = 4 [static]

Definition at line 62 of file codec_speex.c.

Referenced by parse_config().


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