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-rw-r--r--1.2-netsec/codecs/codec_ulaw.c445
1 files changed, 0 insertions, 445 deletions
diff --git a/1.2-netsec/codecs/codec_ulaw.c b/1.2-netsec/codecs/codec_ulaw.c
deleted file mode 100644
index 79a1657b9..000000000
--- a/1.2-netsec/codecs/codec_ulaw.c
+++ /dev/null
@@ -1,445 +0,0 @@
-/*
- * Asterisk -- An open source telephony toolkit.
- *
- * Copyright (C) 1999 - 2005, Digium, Inc.
- *
- * Mark Spencer <markster@digium.com>
- *
- * 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_ulaw.c - translate between signed linear and ulaw
- *
- * \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"
-#include "asterisk/ulaw.h"
-
-#define BUFFER_SIZE 8096 /* size for the translation buffers */
-
-AST_MUTEX_DEFINE_STATIC(localuser_lock);
-static int localusecnt = 0;
-
-static char *tdesc = "Mu-law Coder/Decoder";
-
-static int useplc = 0;
-
-/* Sample frame data */
-
-#include "slin_ulaw_ex.h"
-#include "ulaw_slin_ex.h"
-
-/*
- * Private workspace for translating signed linear signals to ulaw.
- */
-
-struct ulaw_encoder_pvt
-{
- struct ast_frame f;
- char offset[AST_FRIENDLY_OFFSET]; /* Space to build offset */
- unsigned char outbuf[BUFFER_SIZE]; /* Encoded ulaw, two nibbles to a word */
- int tail;
-};
-
-/*
- * Private workspace for translating ulaw signals to signed linear.
- */
-
-struct ulaw_decoder_pvt
-{
- struct ast_frame f;
- char offset[AST_FRIENDLY_OFFSET]; /* Space to build offset */
- short outbuf[BUFFER_SIZE]; /* Decoded signed linear values */
- int tail;
- plc_state_t plc;
-};
-
-/*
- * ulawToLin_New
- * Create a new instance of ulaw_decoder_pvt.
- *
- * Results:
- * Returns a pointer to the new instance.
- *
- * Side effects:
- * None.
- */
-
-static struct ast_translator_pvt *
-ulawtolin_new (void)
-{
- struct ulaw_decoder_pvt *tmp;
- tmp = malloc (sizeof (struct ulaw_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;
-}
-
-/*
- * LinToulaw_New
- * Create a new instance of ulaw_encoder_pvt.
- *
- * Results:
- * Returns a pointer to the new instance.
- *
- * Side effects:
- * None.
- */
-
-static struct ast_translator_pvt *
-lintoulaw_new (void)
-{
- struct ulaw_encoder_pvt *tmp;
- tmp = malloc (sizeof (struct ulaw_encoder_pvt));
- if (tmp)
- {
- memset(tmp, 0, sizeof(*tmp));
- localusecnt++;
- ast_update_use_count ();
- tmp->tail = 0;
- }
- return (struct ast_translator_pvt *) tmp;
-}
-
-/*
- * ulawToLin_FrameIn
- * Fill an input buffer with packed 4-bit ulaw values if there is room
- * left.
- *
- * Results:
- * Foo
- *
- * Side effects:
- * tmp->tail is the number of packed values in the buffer.
- */
-
-static int
-ulawtolin_framein (struct ast_translator_pvt *pvt, struct ast_frame *f)
-{
- struct ulaw_decoder_pvt *tmp = (struct ulaw_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) * 2 > sizeof(tmp->outbuf)) {
- 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 ((tmp->tail + f->datalen) * 2 > sizeof(tmp->outbuf)) {
- ast_log(LOG_WARNING, "Out of buffer space\n");
- return -1;
- }
-
- /* Reset ssindex and signal to frame's specified values */
- b = f->data;
- for (x=0;x<f->datalen;x++)
- tmp->outbuf[tmp->tail + x] = AST_MULAW(b[x]);
-
- if(useplc) plc_rx(&tmp->plc, tmp->outbuf+tmp->tail, f->datalen);
-
- tmp->tail += f->datalen;
- return 0;
-}
-
-/*
- * ulawToLin_FrameOut
- * Convert 4-bit ulaw 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 *
-ulawtolin_frameout (struct ast_translator_pvt *pvt)
-{
- struct ulaw_decoder_pvt *tmp = (struct ulaw_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;
-}
-
-/*
- * LinToulaw_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
-lintoulaw_framein (struct ast_translator_pvt *pvt, struct ast_frame *f)
-{
- struct ulaw_encoder_pvt *tmp = (struct ulaw_encoder_pvt *) pvt;
- int x;
- short *s;
- if (tmp->tail + f->datalen/2 >= sizeof(tmp->outbuf))
- {
- ast_log (LOG_WARNING, "Out of buffer space\n");
- return -1;
- }
- s = f->data;
- for (x=0;x<f->datalen/2;x++)
- tmp->outbuf[x+tmp->tail] = AST_LIN2MU(s[x]);
- tmp->tail += f->datalen/2;
- return 0;
-}
-
-/*
- * LinToulaw_FrameOut
- * Convert a buffer of raw 16-bit signed linear PCM to a buffer
- * of 4-bit ulaw packed two to a byte (Big Endian).
- *
- * Results:
- * Foo
- *
- * Side effects:
- * Leftover inbuf data gets packed, tail gets updated.
- */
-
-static struct ast_frame *
-lintoulaw_frameout (struct ast_translator_pvt *pvt)
-{
- struct ulaw_encoder_pvt *tmp = (struct ulaw_encoder_pvt *) pvt;
-
- if (tmp->tail) {
- tmp->f.frametype = AST_FRAME_VOICE;
- tmp->f.subclass = AST_FORMAT_ULAW;
- 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->f.datalen = tmp->tail;
- tmp->tail = 0;
- return &tmp->f;
- } else return NULL;
-}
-
-
-/*
- * ulawToLin_Sample
- */
-
-static struct ast_frame *
-ulawtolin_sample (void)
-{
- static struct ast_frame f;
- f.frametype = AST_FRAME_VOICE;
- f.subclass = AST_FORMAT_ULAW;
- f.datalen = sizeof (ulaw_slin_ex);
- f.samples = sizeof(ulaw_slin_ex);
- f.mallocd = 0;
- f.offset = 0;
- f.src = __PRETTY_FUNCTION__;
- f.data = ulaw_slin_ex;
- return &f;
-}
-
-/*
- * LinToulaw_Sample
- */
-
-static struct ast_frame *
-lintoulaw_sample (void)
-{
- static struct ast_frame f;
- f.frametype = AST_FRAME_VOICE;
- f.subclass = AST_FORMAT_SLINEAR;
- f.datalen = sizeof (slin_ulaw_ex);
- /* Assume 8000 Hz */
- f.samples = sizeof (slin_ulaw_ex) / 2;
- f.mallocd = 0;
- f.offset = 0;
- f.src = __PRETTY_FUNCTION__;
- f.data = slin_ulaw_ex;
- return &f;
-}
-
-/*
- * ulaw_Destroy
- * Destroys a private workspace.
- *
- * Results:
- * It's gone!
- *
- * Side effects:
- * None.
- */
-
-static void
-ulaw_destroy (struct ast_translator_pvt *pvt)
-{
- free (pvt);
- localusecnt--;
- ast_update_use_count ();
-}
-
-/*
- * The complete translator for ulawToLin.
- */
-
-static struct ast_translator ulawtolin = {
- "ulawtolin",
- AST_FORMAT_ULAW,
- AST_FORMAT_SLINEAR,
- ulawtolin_new,
- ulawtolin_framein,
- ulawtolin_frameout,
- ulaw_destroy,
- /* NULL */
- ulawtolin_sample
-};
-
-/*
- * The complete translator for LinToulaw.
- */
-
-static struct ast_translator lintoulaw = {
- "lintoulaw",
- AST_FORMAT_SLINEAR,
- AST_FORMAT_ULAW,
- lintoulaw_new,
- lintoulaw_framein,
- lintoulaw_frameout,
- ulaw_destroy,
- /* NULL */
- lintoulaw_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_ulaw: %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 (&lintoulaw);
- if (!res)
- res = ast_unregister_translator (&ulawtolin);
- if (localusecnt)
- res = -1;
- ast_mutex_unlock (&localuser_lock);
- return res;
-}
-
-int
-load_module (void)
-{
- int res;
- parse_config();
- res = ast_register_translator (&ulawtolin);
- if (!res)
- res = ast_register_translator (&lintoulaw);
- else
- ast_unregister_translator (&ulawtolin);
- 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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