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-rw-r--r--1.4.23-rc4/codecs/codec_lpc10.c317
1 files changed, 0 insertions, 317 deletions
diff --git a/1.4.23-rc4/codecs/codec_lpc10.c b/1.4.23-rc4/codecs/codec_lpc10.c
deleted file mode 100644
index 3f46e0af8..000000000
--- a/1.4.23-rc4/codecs/codec_lpc10.c
+++ /dev/null
@@ -1,317 +0,0 @@
-/*
- * Asterisk -- An open source telephony toolkit.
- *
- * Copyright (C) 1999 - 2005, Digium, Inc.
- *
- * Mark Spencer <markster@digium.com>
- *
- * The lpc10 code is from a library used by nautilus, modified to be a bit
- * nicer to the compiler.
- * See http://www.arl.wustl.edu/~jaf/
- *
- * 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 Translate between signed linear and LPC10 (Linear Predictor Code)
- *
- * \ingroup codecs
- */
-
-#include "asterisk.h"
-
-ASTERISK_FILE_VERSION(__FILE__, "$Revision$")
-
-#include <fcntl.h>
-#include <stdlib.h>
-#include <unistd.h>
-#include <netinet/in.h>
-#include <string.h>
-#include <stdio.h>
-
-#include "asterisk/lock.h"
-#include "asterisk/translate.h"
-#include "asterisk/config.h"
-#include "asterisk/options.h"
-#include "asterisk/module.h"
-#include "asterisk/logger.h"
-#include "asterisk/channel.h"
-#include "asterisk/utils.h"
-
-#include "lpc10/lpc10.h"
-
-/* Sample frame data */
-#include "slin_lpc10_ex.h"
-#include "lpc10_slin_ex.h"
-
-/* We use a very strange format here... I have no idea why... The frames are 180
- samples long, which isn't even an even number of milliseconds... Not only that
- but we hvae to waste two bits of each frame to keep them ending on a byte boundary
- because the frames are 54 bits long */
-
-#define LPC10_BYTES_IN_COMPRESSED_FRAME (LPC10_BITS_IN_COMPRESSED_FRAME + 7)/8
-
-#define BUFFER_SAMPLES 8000
-
-struct lpc10_coder_pvt {
- union {
- struct lpc10_encoder_state *enc;
- struct lpc10_decoder_state *dec;
- } lpc10;
- /* Enough to store a full second */
- short buf[BUFFER_SAMPLES];
- int longer;
-};
-
-static int lpc10_enc_new(struct ast_trans_pvt *pvt)
-{
- struct lpc10_coder_pvt *tmp = pvt->pvt;
-
- return (tmp->lpc10.enc = create_lpc10_encoder_state()) ? 0 : -1;
-}
-
-static int lpc10_dec_new(struct ast_trans_pvt *pvt)
-{
- struct lpc10_coder_pvt *tmp = pvt->pvt;
-
- return (tmp->lpc10.dec = create_lpc10_decoder_state()) ? 0 : -1;
-}
-
-static struct ast_frame *lintolpc10_sample(void)
-{
- static struct ast_frame f;
- f.frametype = AST_FRAME_VOICE;
- f.subclass = AST_FORMAT_SLINEAR;
- f.datalen = sizeof(slin_lpc10_ex);
- /* Assume 8000 Hz */
- f.samples = LPC10_SAMPLES_PER_FRAME;
- f.mallocd = 0;
- f.offset = 0;
- f.src = __PRETTY_FUNCTION__;
- f.data = slin_lpc10_ex;
- return &f;
-}
-
-static struct ast_frame *lpc10tolin_sample(void)
-{
- static struct ast_frame f;
- f.frametype = AST_FRAME_VOICE;
- f.subclass = AST_FORMAT_LPC10;
- f.datalen = sizeof(lpc10_slin_ex);
- /* All frames are 22 ms long (maybe a little more -- why did he choose
- LPC10_SAMPLES_PER_FRAME sample frames anyway?? */
- f.samples = LPC10_SAMPLES_PER_FRAME;
- f.mallocd = 0;
- f.offset = 0;
- f.src = __PRETTY_FUNCTION__;
- f.data = lpc10_slin_ex;
- return &f;
-}
-
-static void extract_bits(INT32 *bits, unsigned char *c)
-{
- int x;
- for (x=0;x<LPC10_BITS_IN_COMPRESSED_FRAME;x++) {
- if (*c & (0x80 >> (x & 7)))
- bits[x] = 1;
- else
- bits[x] = 0;
- if ((x & 7) == 7)
- c++;
- }
-}
-
-/* XXX note lpc10_encode() produces one bit per word in bits[] */
-static void build_bits(unsigned char *c, INT32 *bits)
-{
- unsigned char mask=0x80;
- int x;
- *c = 0;
- for (x=0;x<LPC10_BITS_IN_COMPRESSED_FRAME;x++) {
- if (bits[x])
- *c |= mask;
- mask = mask >> 1;
- if ((x % 8)==7) {
- c++;
- *c = 0;
- mask = 0x80;
- }
- }
-}
-
-static int lpc10tolin_framein(struct ast_trans_pvt *pvt, struct ast_frame *f)
-{
- struct lpc10_coder_pvt *tmp = pvt->pvt;
- int16_t *dst = (int16_t *)pvt->outbuf;
- int len = 0;
-
- while (len + LPC10_BYTES_IN_COMPRESSED_FRAME <= f->datalen) {
- int x;
- float tmpbuf[LPC10_SAMPLES_PER_FRAME];
- INT32 bits[LPC10_BITS_IN_COMPRESSED_FRAME]; /* XXX see note */
- if (pvt->samples + LPC10_SAMPLES_PER_FRAME > BUFFER_SAMPLES) {
- ast_log(LOG_WARNING, "Out of buffer space\n");
- return -1;
- }
- extract_bits(bits, f->data + len);
- if (lpc10_decode(bits, tmpbuf, tmp->lpc10.dec)) {
- ast_log(LOG_WARNING, "Invalid lpc10 data\n");
- return -1;
- }
- for (x=0;x<LPC10_SAMPLES_PER_FRAME;x++) {
- /* Convert to a short between -1.0 and 1.0 */
- dst[pvt->samples + x] = (int16_t)(32768.0 * tmpbuf[x]);
- }
-
- pvt->samples += LPC10_SAMPLES_PER_FRAME;
- pvt->datalen += 2*LPC10_SAMPLES_PER_FRAME;
- len += LPC10_BYTES_IN_COMPRESSED_FRAME;
- }
- if (len != f->datalen)
- printf("Decoded %d, expected %d\n", len, f->datalen);
- return 0;
-}
-
-static int lintolpc10_framein(struct ast_trans_pvt *pvt, struct ast_frame *f)
-{
- struct lpc10_coder_pvt *tmp = pvt->pvt;
-
- /* Just add the frames to our stream */
- if (pvt->samples + f->samples > BUFFER_SAMPLES) {
- ast_log(LOG_WARNING, "Out of buffer space\n");
- return -1;
- }
- memcpy(tmp->buf + pvt->samples, f->data, f->datalen);
- pvt->samples += f->samples;
- return 0;
-}
-
-static struct ast_frame *lintolpc10_frameout(struct ast_trans_pvt *pvt)
-{
- struct lpc10_coder_pvt *tmp = pvt->pvt;
- int x;
- int datalen = 0; /* output frame */
- int samples = 0; /* output samples */
- float tmpbuf[LPC10_SAMPLES_PER_FRAME];
- INT32 bits[LPC10_BITS_IN_COMPRESSED_FRAME]; /* XXX what ??? */
- /* We can't work on anything less than a frame in size */
- if (pvt->samples < LPC10_SAMPLES_PER_FRAME)
- return NULL;
- while (pvt->samples >= LPC10_SAMPLES_PER_FRAME) {
- /* Encode a frame of data */
- for (x=0;x<LPC10_SAMPLES_PER_FRAME;x++)
- tmpbuf[x] = (float)tmp->buf[x + samples] / 32768.0;
- lpc10_encode(tmpbuf, bits, tmp->lpc10.enc);
- build_bits((unsigned char *) pvt->outbuf + datalen, bits);
- datalen += LPC10_BYTES_IN_COMPRESSED_FRAME;
- samples += LPC10_SAMPLES_PER_FRAME;
- pvt->samples -= LPC10_SAMPLES_PER_FRAME;
- /* Use one of the two left over bits to record if this is a 22 or 23 ms frame...
- important for IAX use */
- tmp->longer = 1 - tmp->longer;
- }
- /* Move the data at the end of the buffer to the front */
- if (pvt->samples)
- memmove(tmp->buf, tmp->buf + samples, pvt->samples * 2);
- return ast_trans_frameout(pvt, datalen, samples);
-}
-
-
-static void lpc10_destroy(struct ast_trans_pvt *arg)
-{
- struct lpc10_coder_pvt *pvt = arg->pvt;
- /* Enc and DEC are both just allocated, so they can be freed */
- free(pvt->lpc10.enc);
-}
-
-static struct ast_translator lpc10tolin = {
- .name = "lpc10tolin",
- .srcfmt = AST_FORMAT_LPC10,
- .dstfmt = AST_FORMAT_SLINEAR,
- .newpvt = lpc10_dec_new,
- .framein = lpc10tolin_framein,
- .destroy = lpc10_destroy,
- .sample = lpc10tolin_sample,
- .desc_size = sizeof(struct lpc10_coder_pvt),
- .buffer_samples = BUFFER_SAMPLES,
- .plc_samples = LPC10_SAMPLES_PER_FRAME,
- .buf_size = BUFFER_SAMPLES * 2,
-};
-
-static struct ast_translator lintolpc10 = {
- .name = "lintolpc10",
- .srcfmt = AST_FORMAT_SLINEAR,
- .dstfmt = AST_FORMAT_LPC10,
- .newpvt = lpc10_enc_new,
- .framein = lintolpc10_framein,
- .frameout = lintolpc10_frameout,
- .destroy = lpc10_destroy,
- .sample = lintolpc10_sample,
- .desc_size = sizeof(struct lpc10_coder_pvt),
- .buffer_samples = BUFFER_SAMPLES,
- .buf_size = LPC10_BYTES_IN_COMPRESSED_FRAME * (1 + BUFFER_SAMPLES / LPC10_SAMPLES_PER_FRAME),
-};
-
-static void parse_config(void)
-{
- struct ast_variable *var;
- struct ast_config *cfg = ast_config_load("codecs.conf");
- if (!cfg)
- return;
- for (var = ast_variable_browse(cfg, "plc"); var; var = var->next) {
- if (!strcasecmp(var->name, "genericplc")) {
- lpc10tolin.useplc = ast_true(var->value) ? 1 : 0;
- if (option_verbose > 2)
- ast_verbose(VERBOSE_PREFIX_3 "codec_lpc10: %susing generic PLC\n",
- lpc10tolin.useplc ? "" : "not ");
- }
- }
- ast_config_destroy(cfg);
-}
-
-static int reload(void)
-{
- parse_config();
-
- return 0;
-}
-
-
-static int unload_module(void)
-{
- int res;
-
- res = ast_unregister_translator(&lintolpc10);
- res |= ast_unregister_translator(&lpc10tolin);
-
- return res;
-}
-
-static int load_module(void)
-{
- int res;
-
- parse_config();
- res=ast_register_translator(&lpc10tolin);
- if (!res)
- res=ast_register_translator(&lintolpc10);
- else
- ast_unregister_translator(&lpc10tolin);
-
- return res;
-}
-
-AST_MODULE_INFO(ASTERISK_GPL_KEY, AST_MODFLAG_DEFAULT, "LPC10 2.4kbps Coder/Decoder",
- .load = load_module,
- .unload = unload_module,
- .reload = reload,
- );
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