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-rw-r--r--1.2-netsec/codecs/codec_adpcm.c655
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diff --git a/1.2-netsec/codecs/codec_adpcm.c b/1.2-netsec/codecs/codec_adpcm.c
deleted file mode 100644
index 187c42442..000000000
--- a/1.2-netsec/codecs/codec_adpcm.c
+++ /dev/null
@@ -1,655 +0,0 @@
-/*
- * Asterisk -- An open source telephony toolkit.
- *
- * Based on frompcm.c and topcm.c from the Emiliano MIPL browser/
- * interpreter. See http://www.bsdtelephony.com.mx
- *
- * Copyright (c) 2001 - 2005 Digium, Inc.
- * All rights reserved.
- *
- * Karl Sackett <krs@linux-support.net>, 2001-03-21
- *
- * See http://www.asterisk.org for more information about
- * the Asterisk project. Please do not directly contact
- * any of the maintainers of this project for assistance;
- * the project provides a web site, mailing lists and IRC
- * channels for your use.
- *
- * This program is free software, distributed under the terms of
- * the GNU General Public License Version 2. See the LICENSE file
- * at the top of the source tree.
- */
-
-/*! \file
- *
- * \brief codec_adpcm.c - translate between signed linear and Dialogic ADPCM
- *
- * \ingroup codecs
- */
-
-#include <fcntl.h>
-#include <netinet/in.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <unistd.h>
-
-#include "asterisk.h"
-
-ASTERISK_FILE_VERSION(__FILE__, "$Revision$")
-
-#include "asterisk/lock.h"
-#include "asterisk/logger.h"
-#include "asterisk/module.h"
-#include "asterisk/config.h"
-#include "asterisk/options.h"
-#include "asterisk/translate.h"
-#include "asterisk/channel.h"
-
-/* define NOT_BLI to use a faster but not bit-level identical version */
-/* #define NOT_BLI */
-
-#define BUFFER_SIZE 8096 /* size for the translation buffers */
-
-AST_MUTEX_DEFINE_STATIC(localuser_lock);
-static int localusecnt = 0;
-
-static char *tdesc = "Adaptive Differential PCM Coder/Decoder";
-
-static int useplc = 0;
-
-/* Sample frame data */
-
-#include "slin_adpcm_ex.h"
-#include "adpcm_slin_ex.h"
-
-/*
- * Step size index shift table
- */
-
-static int indsft[8] = { -1, -1, -1, -1, 2, 4, 6, 8 };
-
-/*
- * Step size table, where stpsz[i]=floor[16*(11/10)^i]
- */
-
-static int stpsz[49] = {
- 16, 17, 19, 21, 23, 25, 28, 31, 34, 37, 41, 45, 50, 55, 60, 66, 73,
- 80, 88, 97, 107, 118, 130, 143, 157, 173, 190, 209, 230, 253, 279,
- 307, 337, 371, 408, 449, 494, 544, 598, 658, 724, 796, 876, 963,
- 1060, 1166, 1282, 1411, 1552
-};
-
-/*
- * Decoder/Encoder state
- * States for both encoder and decoder are synchronized
- */
-struct adpcm_state {
- int ssindex;
- int signal;
- int zero_count;
- int next_flag;
-};
-
-/*
- * Decode(encoded)
- * Decodes the encoded nibble from the adpcm file.
- *
- * Results:
- * Returns the encoded difference.
- *
- * Side effects:
- * Sets the index to the step size table for the next encode.
- */
-
-static inline short
-decode(int encoded, struct adpcm_state* state)
-{
- int diff;
- int step;
- int sign;
-
- step = stpsz[state->ssindex];
-
- sign = encoded & 0x08;
- encoded &= 0x07;
-#ifdef NOT_BLI
- diff = (((encoded << 1) + 1) * step) >> 3;
-#else /* BLI code */
- diff = step >> 3;
- if (encoded & 4) diff += step;
- if (encoded & 2) diff += step >> 1;
- if (encoded & 1) diff += step >> 2;
- if ((encoded >> 1) & step & 0x1)
- diff++;
-#endif
- if (sign)
- diff = -diff;
-
- if (state->next_flag & 0x1)
- state->signal -= 8;
- else if (state->next_flag & 0x2)
- state->signal += 8;
-
- state->signal += diff;
-
- if (state->signal > 2047)
- state->signal = 2047;
- else if (state->signal < -2047)
- state->signal = -2047;
-
- state->next_flag = 0;
-
-#ifdef AUTO_RETURN
- if (encoded)
- state->zero_count = 0;
- else if (++(state->zero_count) == 24)
- {
- state->zero_count = 0;
- if (state->signal > 0)
- state->next_flag = 0x1;
- else if (state->signal < 0)
- state->next_flag = 0x2;
- }
-#endif
-
- state->ssindex += indsft[encoded];
- if (state->ssindex < 0)
- state->ssindex = 0;
- else if (state->ssindex > 48)
- state->ssindex = 48;
-
- return state->signal << 4;
-}
-
-/*
- * Adpcm
- * Takes a signed linear signal and encodes it as ADPCM
- * For more information see http://support.dialogic.com/appnotes/adpcm.pdf
- *
- * Results:
- * Foo.
- *
- * Side effects:
- * signal gets updated with each pass.
- */
-
-static inline int
-adpcm(short csig, struct adpcm_state* state)
-{
- int diff;
- int step;
- int encoded;
-
- /*
- * Clip csig if too large or too small
- */
- csig >>= 4;
-
- step = stpsz[state->ssindex];
- diff = csig - state->signal;
-
-#ifdef NOT_BLI
- if (diff < 0)
- {
- encoded = (-diff << 2) / step;
- if (encoded > 7)
- encoded = 7;
- encoded |= 0x08;
- }
- else
- {
- encoded = (diff << 2) / step;
- if (encoded > 7)
- encoded = 7;
- }
-#else /* BLI code */
- if (diff < 0)
- {
- encoded = 8;
- diff = -diff;
- }
- else
- encoded = 0;
- if (diff >= step)
- {
- encoded |= 4;
- diff -= step;
- }
- step >>= 1;
- if (diff >= step)
- {
- encoded |= 2;
- diff -= step;
- }
- step >>= 1;
- if (diff >= step)
- encoded |= 1;
-#endif /* NOT_BLI */
-
- /* feedback to state */
- decode(encoded, state);
-
- return encoded;
-}
-
-/*
- * Private workspace for translating signed linear signals to ADPCM.
- */
-
-struct adpcm_encoder_pvt
-{
- struct ast_frame f;
- char offset[AST_FRIENDLY_OFFSET]; /* Space to build offset */
- short inbuf[BUFFER_SIZE]; /* Unencoded signed linear values */
- unsigned char outbuf[BUFFER_SIZE]; /* Encoded ADPCM, two nibbles to a word */
- struct adpcm_state state;
- int tail;
-};
-
-/*
- * Private workspace for translating ADPCM signals to signed linear.
- */
-
-struct adpcm_decoder_pvt
-{
- struct ast_frame f;
- char offset[AST_FRIENDLY_OFFSET]; /* Space to build offset */
- short outbuf[BUFFER_SIZE]; /* Decoded signed linear values */
- struct adpcm_state state;
- int tail;
- plc_state_t plc;
-};
-
-/*
- * AdpcmToLin_New
- * Create a new instance of adpcm_decoder_pvt.
- *
- * Results:
- * Returns a pointer to the new instance.
- *
- * Side effects:
- * None.
- */
-
-static struct ast_translator_pvt *
-adpcmtolin_new (void)
-{
- struct adpcm_decoder_pvt *tmp;
- tmp = malloc (sizeof (struct adpcm_decoder_pvt));
- if (tmp)
- {
- memset(tmp, 0, sizeof(*tmp));
- tmp->tail = 0;
- plc_init(&tmp->plc);
- localusecnt++;
- ast_update_use_count ();
- }
- return (struct ast_translator_pvt *) tmp;
-}
-
-/*
- * LinToAdpcm_New
- * Create a new instance of adpcm_encoder_pvt.
- *
- * Results:
- * Returns a pointer to the new instance.
- *
- * Side effects:
- * None.
- */
-
-static struct ast_translator_pvt *
-lintoadpcm_new (void)
-{
- struct adpcm_encoder_pvt *tmp;
- tmp = malloc (sizeof (struct adpcm_encoder_pvt));
- if (tmp)
- {
- memset(tmp, 0, sizeof(*tmp));
- localusecnt++;
- ast_update_use_count ();
- tmp->tail = 0;
- }
- return (struct ast_translator_pvt *) tmp;
-}
-
-/*
- * AdpcmToLin_FrameIn
- * Take an input buffer with packed 4-bit ADPCM values and put decoded PCM in outbuf,
- * if there is room left.
- *
- * Results:
- * Foo
- *
- * Side effects:
- * tmp->tail is the number of packed values in the buffer.
- */
-
-static int
-adpcmtolin_framein (struct ast_translator_pvt *pvt, struct ast_frame *f)
-{
- struct adpcm_decoder_pvt *tmp = (struct adpcm_decoder_pvt *) pvt;
- int x;
- unsigned char *b;
-
- if(f->datalen == 0) { /* perform PLC with nominal framesize of 20ms/160 samples */
- if((tmp->tail + 160) > sizeof(tmp->outbuf) / 2) {
- ast_log(LOG_WARNING, "Out of buffer space\n");
- return -1;
- }
- if(useplc) {
- plc_fillin(&tmp->plc, tmp->outbuf+tmp->tail, 160);
- tmp->tail += 160;
- }
- return 0;
- }
-
- if (f->datalen * 4 + tmp->tail * 2 > sizeof(tmp->outbuf)) {
- ast_log(LOG_WARNING, "Out of buffer space\n");
- return -1;
- }
-
- b = f->data;
-
- for (x=0;x<f->datalen;x++) {
- tmp->outbuf[tmp->tail++] = decode((b[x] >> 4) & 0xf, &tmp->state);
- tmp->outbuf[tmp->tail++] = decode(b[x] & 0x0f, &tmp->state);
- }
-
- if(useplc) plc_rx(&tmp->plc, tmp->outbuf+tmp->tail-f->datalen*2, f->datalen*2);
-
- return 0;
-}
-
-/*
- * AdpcmToLin_FrameOut
- * Convert 4-bit ADPCM encoded signals to 16-bit signed linear.
- *
- * Results:
- * Converted signals are placed in tmp->f.data, tmp->f.datalen
- * and tmp->f.samples are calculated.
- *
- * Side effects:
- * None.
- */
-
-static struct ast_frame *
-adpcmtolin_frameout (struct ast_translator_pvt *pvt)
-{
- struct adpcm_decoder_pvt *tmp = (struct adpcm_decoder_pvt *) pvt;
-
- if (!tmp->tail)
- return NULL;
-
- tmp->f.frametype = AST_FRAME_VOICE;
- tmp->f.subclass = AST_FORMAT_SLINEAR;
- tmp->f.datalen = tmp->tail *2;
- tmp->f.samples = tmp->tail;
- tmp->f.mallocd = 0;
- tmp->f.offset = AST_FRIENDLY_OFFSET;
- tmp->f.src = __PRETTY_FUNCTION__;
- tmp->f.data = tmp->outbuf;
- tmp->tail = 0;
- return &tmp->f;
-}
-
-/*
- * LinToAdpcm_FrameIn
- * Fill an input buffer with 16-bit signed linear PCM values.
- *
- * Results:
- * None.
- *
- * Side effects:
- * tmp->tail is number of signal values in the input buffer.
- */
-
-static int
-lintoadpcm_framein (struct ast_translator_pvt *pvt, struct ast_frame *f)
-{
- struct adpcm_encoder_pvt *tmp = (struct adpcm_encoder_pvt *) pvt;
-
- if ((tmp->tail + f->datalen / 2) < (sizeof (tmp->inbuf) / 2))
- {
- memcpy (&tmp->inbuf[tmp->tail], f->data, f->datalen);
- tmp->tail += f->datalen / 2;
- }
- else
- {
- ast_log (LOG_WARNING, "Out of buffer space\n");
- return -1;
- }
- return 0;
-}
-
-/*
- * LinToAdpcm_FrameOut
- * Convert a buffer of raw 16-bit signed linear PCM to a buffer
- * of 4-bit ADPCM packed two to a byte (Big Endian).
- *
- * Results:
- * Foo
- *
- * Side effects:
- * Leftover inbuf data gets packed, tail gets updated.
- */
-
-static struct ast_frame *
-lintoadpcm_frameout (struct ast_translator_pvt *pvt)
-{
- struct adpcm_encoder_pvt *tmp = (struct adpcm_encoder_pvt *) pvt;
- int i_max, i;
-
- if (tmp->tail < 2) return NULL;
-
-
- i_max = tmp->tail & ~1; /* atomic size is 2 samples */
-
- /* What is this, state debugging? should be #ifdef'd then
- tmp->outbuf[0] = tmp->ssindex & 0xff;
- tmp->outbuf[1] = (tmp->signal >> 8) & 0xff;
- tmp->outbuf[2] = (tmp->signal & 0xff);
- tmp->outbuf[3] = tmp->zero_count;
- tmp->outbuf[4] = tmp->next_flag;
- */
- for (i = 0; i < i_max; i+=2)
- {
- tmp->outbuf[i/2] =
- (adpcm(tmp->inbuf[i ], &tmp->state) << 4) |
- (adpcm(tmp->inbuf[i+1], &tmp->state) );
- };
-
-
- tmp->f.frametype = AST_FRAME_VOICE;
- tmp->f.subclass = AST_FORMAT_ADPCM;
- tmp->f.samples = i_max;
- tmp->f.mallocd = 0;
- tmp->f.offset = AST_FRIENDLY_OFFSET;
- tmp->f.src = __PRETTY_FUNCTION__;
- tmp->f.data = tmp->outbuf;
- tmp->f.datalen = i_max / 2;
-
- /*
- * If there is a signal left over (there should be no more than
- * one) move it to the beginning of the input buffer.
- */
-
- if (tmp->tail == i_max)
- tmp->tail = 0;
- else
- {
- tmp->inbuf[0] = tmp->inbuf[tmp->tail];
- tmp->tail = 1;
- }
- return &tmp->f;
-}
-
-
-/*
- * AdpcmToLin_Sample
- */
-
-static struct ast_frame *
-adpcmtolin_sample (void)
-{
- static struct ast_frame f;
- f.frametype = AST_FRAME_VOICE;
- f.subclass = AST_FORMAT_ADPCM;
- f.datalen = sizeof (adpcm_slin_ex);
- f.samples = sizeof(adpcm_slin_ex) * 2;
- f.mallocd = 0;
- f.offset = 0;
- f.src = __PRETTY_FUNCTION__;
- f.data = adpcm_slin_ex;
- return &f;
-}
-
-/*
- * LinToAdpcm_Sample
- */
-
-static struct ast_frame *
-lintoadpcm_sample (void)
-{
- static struct ast_frame f;
- f.frametype = AST_FRAME_VOICE;
- f.subclass = AST_FORMAT_SLINEAR;
- f.datalen = sizeof (slin_adpcm_ex);
- /* Assume 8000 Hz */
- f.samples = sizeof (slin_adpcm_ex) / 2;
- f.mallocd = 0;
- f.offset = 0;
- f.src = __PRETTY_FUNCTION__;
- f.data = slin_adpcm_ex;
- return &f;
-}
-
-/*
- * Adpcm_Destroy
- * Destroys a private workspace.
- *
- * Results:
- * It's gone!
- *
- * Side effects:
- * None.
- */
-
-static void
-adpcm_destroy (struct ast_translator_pvt *pvt)
-{
- free (pvt);
- localusecnt--;
- ast_update_use_count ();
-}
-
-/*
- * The complete translator for ADPCMToLin.
- */
-
-static struct ast_translator adpcmtolin = {
- "adpcmtolin",
- AST_FORMAT_ADPCM,
- AST_FORMAT_SLINEAR,
- adpcmtolin_new,
- adpcmtolin_framein,
- adpcmtolin_frameout,
- adpcm_destroy,
- /* NULL */
- adpcmtolin_sample
-};
-
-/*
- * The complete translator for LinToADPCM.
- */
-
-static struct ast_translator lintoadpcm = {
- "lintoadpcm",
- AST_FORMAT_SLINEAR,
- AST_FORMAT_ADPCM,
- lintoadpcm_new,
- lintoadpcm_framein,
- lintoadpcm_frameout,
- adpcm_destroy,
- /* NULL */
- lintoadpcm_sample
-};
-
-static void
-parse_config(void)
-{
- struct ast_config *cfg;
- struct ast_variable *var;
- if ((cfg = ast_config_load("codecs.conf"))) {
- if ((var = ast_variable_browse(cfg, "plc"))) {
- while (var) {
- if (!strcasecmp(var->name, "genericplc")) {
- useplc = ast_true(var->value) ? 1 : 0;
- if (option_verbose > 2)
- ast_verbose(VERBOSE_PREFIX_3 "codec_adpcm: %susing generic PLC\n", useplc ? "" : "not ");
- }
- var = var->next;
- }
- }
- ast_config_destroy(cfg);
- }
-}
-
-int
-reload(void)
-{
- parse_config();
- return 0;
-}
-
-int
-unload_module (void)
-{
- int res;
- ast_mutex_lock (&localuser_lock);
- res = ast_unregister_translator (&lintoadpcm);
- if (!res)
- res = ast_unregister_translator (&adpcmtolin);
- if (localusecnt)
- res = -1;
- ast_mutex_unlock (&localuser_lock);
- return res;
-}
-
-int
-load_module (void)
-{
- int res;
- parse_config();
- res = ast_register_translator (&adpcmtolin);
- if (!res)
- res = ast_register_translator (&lintoadpcm);
- else
- ast_unregister_translator (&adpcmtolin);
- return res;
-}
-
-/*
- * Return a description of this module.
- */
-
-char *
-description (void)
-{
- return tdesc;
-}
-
-int
-usecount (void)
-{
- int res;
- STANDARD_USECOUNT (res);
- return res;
-}
-
-char *
-key ()
-{
- return ASTERISK_GPL_KEY;
-}
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