diff options
Diffstat (limited to '1.4.23-rc4/codecs/codec_alaw.c')
| -rw-r--r-- | 1.4.23-rc4/codecs/codec_alaw.c | 189 |
1 files changed, 0 insertions, 189 deletions
diff --git a/1.4.23-rc4/codecs/codec_alaw.c b/1.4.23-rc4/codecs/codec_alaw.c deleted file mode 100644 index de1061687..000000000 --- a/1.4.23-rc4/codecs/codec_alaw.c +++ /dev/null @@ -1,189 +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_alaw.c - translate between signed linear and alaw - * - * \ingroup codecs - */ - -#include "asterisk.h" - -ASTERISK_FILE_VERSION(__FILE__, "$Revision$") - -#include <fcntl.h> -#include <netinet/in.h> -#include <stdio.h> -#include <stdlib.h> -#include <string.h> -#include <unistd.h> - -#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/alaw.h" -#include "asterisk/utils.h" - -#define BUFFER_SAMPLES 8096 /* size for the translation buffers */ - -/* Sample frame data (Mu data is okay) */ - -#include "slin_ulaw_ex.h" -#include "ulaw_slin_ex.h" - -/*! \brief decode frame into lin and fill output buffer. */ -static int alawtolin_framein(struct ast_trans_pvt *pvt, struct ast_frame *f) -{ - int i = f->samples; - unsigned char *src = f->data; - int16_t *dst = (int16_t *)pvt->outbuf + pvt->samples; - - pvt->samples += i; - pvt->datalen += i * 2; /* 2 bytes/sample */ - - while (i--) - *dst++ = AST_ALAW(*src++); - - return 0; -} - -/*! \brief convert and store input samples in output buffer */ -static int lintoalaw_framein(struct ast_trans_pvt *pvt, struct ast_frame *f) -{ - int i = f->samples; - char *dst = pvt->outbuf + pvt->samples; - int16_t *src = f->data; - - pvt->samples += i; - pvt->datalen += i; /* 1 byte/sample */ - - while (i--) - *dst++ = AST_LIN2A(*src++); - - return 0; -} - -/*! \brief alawToLin_Sample */ -static struct ast_frame *alawtolin_sample(void) -{ - static struct ast_frame f; - f.frametype = AST_FRAME_VOICE; - f.subclass = AST_FORMAT_ALAW; - 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; -} - -/*! \brief LinToalaw_Sample */ -static struct ast_frame *lintoalaw_sample(void) -{ - static struct ast_frame f; - f.frametype = AST_FRAME_VOICE; - f.subclass = AST_FORMAT_SLINEAR; - f.datalen = sizeof(slin_ulaw_ex); - f.samples = sizeof(slin_ulaw_ex) / 2; - f.mallocd = 0; - f.offset = 0; - f.src = __PRETTY_FUNCTION__; - f.data = slin_ulaw_ex; - return &f; -} - -static struct ast_translator alawtolin = { - .name = "alawtolin", - .srcfmt = AST_FORMAT_ALAW, - .dstfmt = AST_FORMAT_SLINEAR, - .framein = alawtolin_framein, - .sample = alawtolin_sample, - .buffer_samples = BUFFER_SAMPLES, - .buf_size = BUFFER_SAMPLES * 2, - .plc_samples = 160, -}; - -static struct ast_translator lintoalaw = { - "lintoalaw", - .srcfmt = AST_FORMAT_SLINEAR, - .dstfmt = AST_FORMAT_ALAW, - .framein = lintoalaw_framein, - .sample = lintoalaw_sample, - .buffer_samples = BUFFER_SAMPLES, - .buf_size = BUFFER_SAMPLES, -}; - -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")) { - alawtolin.useplc = ast_true(var->value) ? 1 : 0; - if (option_verbose > 2) - ast_verbose(VERBOSE_PREFIX_3 "codec_alaw: %susing generic PLC\n", alawtolin.useplc ? "" : "not "); - } - } - ast_config_destroy(cfg); -} - -/*! \brief standard module stuff */ - -static int reload(void) -{ - parse_config(); - return 0; -} - -static int unload_module(void) -{ - int res; - - res = ast_unregister_translator(&lintoalaw); - res |= ast_unregister_translator(&alawtolin); - - return res; -} - -static int load_module(void) -{ - int res; - - parse_config(); - res = ast_register_translator(&alawtolin); - if (!res) - res = ast_register_translator(&lintoalaw); - else - ast_unregister_translator(&alawtolin); - - return res; -} - -AST_MODULE_INFO(ASTERISK_GPL_KEY, AST_MODFLAG_DEFAULT, "A-law Coder/Decoder", - .load = load_module, - .unload = unload_module, - .reload = reload, - ); |