a525edea59
https://origsvn.digium.com/svn/asterisk/branches/1.10 ................ r328247 | lmadsen | 2011-07-14 16:25:31 -0400 (Thu, 14 Jul 2011) | 14 lines Merged revisions 328209 via svnmerge from https://origsvn.digium.com/svn/asterisk/branches/1.8 ........ r328209 | lmadsen | 2011-07-14 16:13:06 -0400 (Thu, 14 Jul 2011) | 6 lines Introduce <support_level> tags in MODULEINFO. This change introduces MODULEINFO into many modules in Asterisk in order to show the community support level for those modules. This is used by changes committed to menuselect by Russell Bryant recently (r917 in menuselect). More information about the support level types and what they mean is available on the wiki at https://wiki.asterisk.org/wiki/display/AST/Asterisk+Module+Support+States ........ ................ git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@328259 65c4cc65-6c06-0410-ace0-fbb531ad65f3
135 lines
3 KiB
C
135 lines
3 KiB
C
/*
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* Asterisk -- An open source telephony toolkit.
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*
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* Copyright (C) 1999 - 2005, Digium, Inc.
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*
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* Mark Spencer <markster@digium.com>
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*
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* See http://www.asterisk.org for more information about
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* the Asterisk project. Please do not directly contact
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* any of the maintainers of this project for assistance;
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* the project provides a web site, mailing lists and IRC
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* channels for your use.
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*
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* This program is free software, distributed under the terms of
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* the GNU General Public License Version 2. See the LICENSE file
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* at the top of the source tree.
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*/
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/*! \file
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*
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* \brief codec_a_mu.c - translate between alaw and ulaw directly
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*
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* \ingroup codecs
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*/
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/*** MODULEINFO
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<support_level>core</support_level>
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***/
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#include "asterisk.h"
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ASTERISK_FILE_VERSION(__FILE__, "$Revision$")
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#include "asterisk/module.h"
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#include "asterisk/translate.h"
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#include "asterisk/alaw.h"
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#include "asterisk/ulaw.h"
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#include "asterisk/utils.h"
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#define BUFFER_SAMPLES 8000 /* size for the translation buffers */
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static unsigned char mu2a[256];
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static unsigned char a2mu[256];
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/* Sample frame data */
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#include "ex_ulaw.h"
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#include "ex_alaw.h"
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/*! \brief convert frame data and store into the buffer */
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static int alawtoulaw_framein(struct ast_trans_pvt *pvt, struct ast_frame *f)
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{
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int x = f->samples;
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unsigned char *src = f->data.ptr;
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unsigned char *dst = pvt->outbuf.uc + pvt->samples;
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pvt->samples += x;
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pvt->datalen += x;
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while (x--)
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*dst++ = a2mu[*src++];
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return 0;
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}
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/*! \brief convert frame data and store into the buffer */
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static int ulawtoalaw_framein(struct ast_trans_pvt *pvt, struct ast_frame *f)
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{
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int x = f->samples;
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unsigned char *src = f->data.ptr;
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unsigned char *dst = pvt->outbuf.uc + pvt->samples;
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pvt->samples += x;
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pvt->datalen += x;
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while (x--)
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*dst++ = mu2a[*src++];
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return 0;
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}
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static struct ast_translator alawtoulaw = {
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.name = "alawtoulaw",
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.framein = alawtoulaw_framein,
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.sample = alaw_sample,
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.buffer_samples = BUFFER_SAMPLES,
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.buf_size = BUFFER_SAMPLES,
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};
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static struct ast_translator ulawtoalaw = {
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.name = "ulawtoalaw",
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.framein = ulawtoalaw_framein,
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.sample = ulaw_sample,
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.buffer_samples = BUFFER_SAMPLES,
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.buf_size = BUFFER_SAMPLES,
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};
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/*! \brief standard module glue */
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static int unload_module(void)
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{
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int res;
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res = ast_unregister_translator(&ulawtoalaw);
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res |= ast_unregister_translator(&alawtoulaw);
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return res;
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}
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static int load_module(void)
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{
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int res;
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int x;
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ast_format_set(&alawtoulaw.src_format, AST_FORMAT_ALAW, 0);
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ast_format_set(&alawtoulaw.dst_format, AST_FORMAT_ULAW, 0);
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ast_format_set(&ulawtoalaw.src_format, AST_FORMAT_ULAW, 0);
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ast_format_set(&ulawtoalaw.dst_format, AST_FORMAT_ALAW, 0);
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for (x=0;x<256;x++) {
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mu2a[x] = AST_LIN2A(AST_MULAW(x));
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a2mu[x] = AST_LIN2MU(AST_ALAW(x));
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}
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res = ast_register_translator(&alawtoulaw);
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if (!res)
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res = ast_register_translator(&ulawtoalaw);
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else
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ast_unregister_translator(&alawtoulaw);
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if (res)
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return AST_MODULE_LOAD_FAILURE;
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return AST_MODULE_LOAD_SUCCESS;
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}
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AST_MODULE_INFO_STANDARD(ASTERISK_GPL_KEY, "A-law and Mulaw direct Coder/Decoder");
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