codecs: Add Codec 2 mode 2400.
ASTERISK-26217 #close Change-Id: I1e45d8084683fab5f2b272bf35f4a149cea8b8d6
This commit is contained in:
Alexander Traud
parent
943bb48b59
commit
2e79f52d71
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@ -4,6 +4,7 @@ COROSYNC=@PBX_COROSYNC@
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CRYPTO=@PBX_CRYPTO@
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BFD=@PBX_BFD@
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BISON=@PBX_BISON@
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CODEC2=@PBX_CODEC2@
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CURL=@PBX_CURL@
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DAHDI=@PBX_DAHDI@
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DLADDR=@PBX_DLADDR@
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@ -0,0 +1,222 @@
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/*
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* Asterisk -- An open source telephony toolkit.
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*
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* Copyright (C) 2016, Alexander Traud
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*
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* Alexander Traud <pabstraud@compuserve.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 Translate between signed linear and Codec 2
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*
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* \author Alexander Traud <pabstraud@compuserve.com>
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*
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* \note http://www.rowetel.com/codec2.html
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*
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* \ingroup codecs
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*/
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/*** MODULEINFO
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<depend>codec2</depend>
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<support_level>core</support_level>
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***/
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#include "asterisk.h"
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#include "asterisk/codec.h" /* for AST_MEDIA_TYPE_AUDIO */
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#include "asterisk/frame.h" /* for ast_frame */
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#include "asterisk/linkedlists.h" /* for AST_LIST_NEXT, etc */
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#include "asterisk/logger.h" /* for ast_log, etc */
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#include "asterisk/module.h"
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#include "asterisk/rtp_engine.h" /* ast_rtp_engine_(un)load_format */
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#include "asterisk/translate.h" /* for ast_trans_pvt, etc */
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#include <codec2/codec2.h>
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#define BUFFER_SAMPLES 8000
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#define CODEC2_SAMPLES 160 /* consider codec2_samples_per_frame(.) */
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#define CODEC2_FRAME_LEN 6 /* consider codec2_bits_per_frame(.) */
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/* Sample frame data */
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#include "asterisk/slin.h"
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#include "ex_codec2.h"
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struct codec2_translator_pvt {
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struct CODEC2 *state; /* May be encoder or decoder */
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int16_t buf[BUFFER_SAMPLES];
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};
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static int codec2_new(struct ast_trans_pvt *pvt)
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{
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struct codec2_translator_pvt *tmp = pvt->pvt;
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tmp->state = codec2_create(CODEC2_MODE_2400);
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if (!tmp->state) {
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ast_log(LOG_ERROR, "Error creating Codec 2 conversion\n");
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return -1;
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}
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return 0;
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}
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/*! \brief decode and store in outbuf. */
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static int codec2tolin_framein(struct ast_trans_pvt *pvt, struct ast_frame *f)
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{
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struct codec2_translator_pvt *tmp = pvt->pvt;
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int x;
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for (x = 0; x < f->datalen; x += CODEC2_FRAME_LEN) {
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unsigned char *src = f->data.ptr + x;
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int16_t *dst = pvt->outbuf.i16 + pvt->samples;
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codec2_decode(tmp->state, dst, src);
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pvt->samples += CODEC2_SAMPLES;
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pvt->datalen += CODEC2_SAMPLES * 2;
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}
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return 0;
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}
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/*! \brief store samples into working buffer for later decode */
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static int lintocodec2_framein(struct ast_trans_pvt *pvt, struct ast_frame *f)
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{
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struct codec2_translator_pvt *tmp = pvt->pvt;
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memcpy(tmp->buf + pvt->samples, f->data.ptr, f->datalen);
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pvt->samples += f->samples;
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return 0;
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}
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/*! \brief encode and produce a frame */
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static struct ast_frame *lintocodec2_frameout(struct ast_trans_pvt *pvt)
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{
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struct codec2_translator_pvt *tmp = pvt->pvt;
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struct ast_frame *result = NULL;
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struct ast_frame *last = NULL;
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int samples = 0; /* output samples */
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while (pvt->samples >= CODEC2_SAMPLES) {
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struct ast_frame *current;
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/* Encode a frame of data */
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codec2_encode(tmp->state, pvt->outbuf.uc, tmp->buf + samples);
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samples += CODEC2_SAMPLES;
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pvt->samples -= CODEC2_SAMPLES;
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current = ast_trans_frameout(pvt, CODEC2_FRAME_LEN, CODEC2_SAMPLES);
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if (!current) {
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continue;
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} else if (last) {
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AST_LIST_NEXT(last, frame_list) = current;
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} else {
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result = current;
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}
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last = current;
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}
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/* Move the data at the end of the buffer to the front */
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if (samples) {
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memmove(tmp->buf, tmp->buf + samples, pvt->samples * 2);
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}
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return result;
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}
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static void codec2_destroy_stuff(struct ast_trans_pvt *pvt)
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{
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struct codec2_translator_pvt *tmp = pvt->pvt;
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if (tmp->state) {
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codec2_destroy(tmp->state);
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}
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}
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static struct ast_translator codec2tolin = {
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.name = "codec2tolin",
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.src_codec = {
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.name = "codec2",
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.type = AST_MEDIA_TYPE_AUDIO,
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.sample_rate = 8000,
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},
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.dst_codec = {
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.name = "slin",
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.type = AST_MEDIA_TYPE_AUDIO,
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.sample_rate = 8000,
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},
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.format = "slin",
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.newpvt = codec2_new,
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.framein = codec2tolin_framein,
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.destroy = codec2_destroy_stuff,
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.sample = codec2_sample,
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.desc_size = sizeof(struct codec2_translator_pvt),
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.buffer_samples = BUFFER_SAMPLES,
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.buf_size = BUFFER_SAMPLES * 2,
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};
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static struct ast_translator lintocodec2 = {
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.name = "lintocodec2",
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.src_codec = {
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.name = "slin",
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.type = AST_MEDIA_TYPE_AUDIO,
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.sample_rate = 8000,
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},
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.dst_codec = {
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.name = "codec2",
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.type = AST_MEDIA_TYPE_AUDIO,
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.sample_rate = 8000,
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},
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.format = "codec2",
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.newpvt = codec2_new,
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.framein = lintocodec2_framein,
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.frameout = lintocodec2_frameout,
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.destroy = codec2_destroy_stuff,
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.sample = slin8_sample,
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.desc_size = sizeof(struct codec2_translator_pvt),
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.buffer_samples = BUFFER_SAMPLES,
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.buf_size = (BUFFER_SAMPLES * CODEC2_FRAME_LEN + CODEC2_SAMPLES - 1) / CODEC2_SAMPLES,
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};
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static int unload_module(void)
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{
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int res = 0;
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res |= ast_rtp_engine_unload_format(ast_format_codec2);
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res |= ast_unregister_translator(&lintocodec2);
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res |= ast_unregister_translator(&codec2tolin);
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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 = 0;
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res |= ast_register_translator(&codec2tolin);
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res |= ast_register_translator(&lintocodec2);
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res |= ast_rtp_engine_load_format(ast_format_codec2);
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if (res) {
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unload_module();
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return AST_MODULE_LOAD_FAILURE;
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}
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return AST_MODULE_LOAD_SUCCESS;
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}
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AST_MODULE_INFO_STANDARD(ASTERISK_GPL_KEY, "Codec 2 Coder/Decoder");
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@ -0,0 +1,32 @@
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/*! \file
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* \brief 8-bit raw data
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*
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* Copyright (C) 2016, Alexander Traud
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*
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* Distributed under the terms of the GNU General Public License
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*
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*/
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#include "asterisk/format_cache.h" /* for ast_format_codec2 */
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#include "asterisk/frame.h" /* for ast_frame, etc */
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static uint8_t ex_codec2[] = {
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0xea, 0xca, 0x14, 0x85, 0x91, 0x78,
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};
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static struct ast_frame *codec2_sample(void)
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{
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static struct ast_frame f = {
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.frametype = AST_FRAME_VOICE,
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.datalen = sizeof(ex_codec2),
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.samples = CODEC2_SAMPLES,
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.mallocd = 0,
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.offset = 0,
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.src = __PRETTY_FUNCTION__,
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.data.ptr = ex_codec2,
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};
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f.subclass.format = ast_format_codec2;
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return &f;
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}
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@ -1152,6 +1152,10 @@ PBX_COROSYNC
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COROSYNC_DIR
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COROSYNC_INCLUDE
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COROSYNC_LIB
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PBX_CODEC2
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CODEC2_DIR
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CODEC2_INCLUDE
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CODEC2_LIB
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PBX_CAP
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CAP_DIR
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CAP_INCLUDE
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@ -1326,6 +1330,7 @@ with_bfd
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with_execinfo
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with_bluetooth
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with_cap
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with_codec2
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with_cpg
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with_curses
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with_crypt
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@ -2065,6 +2070,7 @@ Optional Packages:
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--with-execinfo=PATH use Stack Backtrace files in PATH
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--with-bluetooth=PATH use Bluetooth files in PATH
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--with-cap=PATH use POSIX 1.e capabilities files in PATH
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--with-codec2=PATH use Codec 2 Audio Decoder/Encoder files in PATH
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--with-cpg=PATH use Corosync files in PATH
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--with-curses=PATH use curses files in PATH
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--with-crypt=PATH use password and data encryption files in PATH
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@ -8988,6 +8994,38 @@ fi
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CODEC2_DESCRIP="Codec 2 Audio Decoder/Encoder"
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CODEC2_OPTION="codec2"
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PBX_CODEC2=0
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# Check whether --with-codec2 was given.
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if test "${with_codec2+set}" = set; then :
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withval=$with_codec2;
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case ${withval} in
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n|no)
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USE_CODEC2=no
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# -1 is a magic value used by menuselect to know that the package
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# was disabled, other than 'not found'
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PBX_CODEC2=-1
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;;
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y|ye|yes)
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ac_mandatory_list="${ac_mandatory_list} CODEC2"
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;;
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*)
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CODEC2_DIR="${withval}"
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ac_mandatory_list="${ac_mandatory_list} CODEC2"
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;;
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esac
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fi
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COROSYNC_DESCRIP="Corosync"
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COROSYNC_OPTION="cpg"
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PBX_COROSYNC=0
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@ -30372,6 +30410,111 @@ fi
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fi
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if test "x${PBX_CODEC2}" != "x1" -a "${USE_CODEC2}" != "no"; then
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pbxlibdir=""
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# if --with-CODEC2=DIR has been specified, use it.
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if test "x${CODEC2_DIR}" != "x"; then
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if test -d ${CODEC2_DIR}/lib; then
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pbxlibdir="-L${CODEC2_DIR}/lib"
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else
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pbxlibdir="-L${CODEC2_DIR}"
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fi
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fi
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pbxfuncname="codec2_create"
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if test "x${pbxfuncname}" = "x" ; then # empty lib, assume only headers
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AST_CODEC2_FOUND=yes
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else
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ast_ext_lib_check_save_CFLAGS="${CFLAGS}"
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CFLAGS="${CFLAGS} "
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as_ac_Lib=`$as_echo "ac_cv_lib_codec2_${pbxfuncname}" | $as_tr_sh`
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{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for ${pbxfuncname} in -lcodec2" >&5
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$as_echo_n "checking for ${pbxfuncname} in -lcodec2... " >&6; }
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if eval \${$as_ac_Lib+:} false; then :
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$as_echo_n "(cached) " >&6
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else
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ac_check_lib_save_LIBS=$LIBS
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LIBS="-lcodec2 ${pbxlibdir} $LIBS"
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cat confdefs.h - <<_ACEOF >conftest.$ac_ext
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/* end confdefs.h. */
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/* Override any GCC internal prototype to avoid an error.
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Use char because int might match the return type of a GCC
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builtin and then its argument prototype would still apply. */
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#ifdef __cplusplus
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extern "C"
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#endif
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char ${pbxfuncname} ();
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int
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main ()
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{
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return ${pbxfuncname} ();
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;
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return 0;
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}
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_ACEOF
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if ac_fn_c_try_link "$LINENO"; then :
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eval "$as_ac_Lib=yes"
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else
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eval "$as_ac_Lib=no"
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fi
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rm -f core conftest.err conftest.$ac_objext \
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conftest$ac_exeext conftest.$ac_ext
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LIBS=$ac_check_lib_save_LIBS
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fi
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eval ac_res=\$$as_ac_Lib
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{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_res" >&5
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$as_echo "$ac_res" >&6; }
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if eval test \"x\$"$as_ac_Lib"\" = x"yes"; then :
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AST_CODEC2_FOUND=yes
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else
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AST_CODEC2_FOUND=no
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fi
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CFLAGS="${ast_ext_lib_check_save_CFLAGS}"
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fi
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# now check for the header.
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if test "${AST_CODEC2_FOUND}" = "yes"; then
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CODEC2_LIB="${pbxlibdir} -lcodec2 "
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# if --with-CODEC2=DIR has been specified, use it.
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if test "x${CODEC2_DIR}" != "x"; then
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CODEC2_INCLUDE="-I${CODEC2_DIR}/include"
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fi
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CODEC2_INCLUDE="${CODEC2_INCLUDE} "
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if test "xcodec2/codec2.h" = "x" ; then # no header, assume found
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CODEC2_HEADER_FOUND="1"
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else # check for the header
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ast_ext_lib_check_saved_CPPFLAGS="${CPPFLAGS}"
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CPPFLAGS="${CPPFLAGS} ${CODEC2_INCLUDE}"
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ac_fn_c_check_header_mongrel "$LINENO" "codec2/codec2.h" "ac_cv_header_codec2_codec2_h" "$ac_includes_default"
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if test "x$ac_cv_header_codec2_codec2_h" = xyes; then :
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CODEC2_HEADER_FOUND=1
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else
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CODEC2_HEADER_FOUND=0
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fi
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CPPFLAGS="${ast_ext_lib_check_saved_CPPFLAGS}"
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fi
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if test "x${CODEC2_HEADER_FOUND}" = "x0" ; then
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CODEC2_LIB=""
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CODEC2_INCLUDE=""
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else
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if test "x${pbxfuncname}" = "x" ; then # only checking headers -> no library
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CODEC2_LIB=""
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fi
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PBX_CODEC2=1
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cat >>confdefs.h <<_ACEOF
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#define HAVE_CODEC2 1
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_ACEOF
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fi
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fi
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fi
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if test "x${PBX_COROSYNC}" != "x1" -a "${USE_COROSYNC}" != "no"; then
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pbxlibdir=""
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# if --with-COROSYNC=DIR has been specified, use it.
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@ -407,6 +407,7 @@ AST_EXT_LIB_SETUP([BFD], [Debug symbol decoding], [bfd])
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AST_EXT_LIB_SETUP([BKTR], [Stack Backtrace], [execinfo])
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AST_EXT_LIB_SETUP([BLUETOOTH], [Bluetooth], [bluetooth])
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AST_EXT_LIB_SETUP([CAP], [POSIX 1.e capabilities], [cap])
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AST_EXT_LIB_SETUP([CODEC2], [Codec 2 Audio Decoder/Encoder], [codec2])
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AST_EXT_LIB_SETUP([COROSYNC], [Corosync], [cpg])
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AST_EXT_LIB_SETUP_OPTIONAL([COROSYNC_CFG_STATE_TRACK], [A callback only in corosync 1.x], [COROSYNC], [cfg])
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AST_EXT_LIB_SETUP([CURSES], [curses], [curses])
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@ -2336,6 +2337,8 @@ else
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AST_EXT_LIB_CHECK([RADIUS], [radiusclient-ng], [rc_read_config], [radiusclient-ng.h])
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fi
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AST_EXT_LIB_CHECK([CODEC2], [codec2], [codec2_create], [codec2/codec2.h])
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AST_EXT_LIB_CHECK([COROSYNC], [cpg], [cpg_join], [corosync/cpg.h], [-lcfg])
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AST_EXT_LIB_CHECK([COROSYNC_CFG_STATE_TRACK], [cfg], [corosync_cfg_state_track], [corosync/cfg.h], [-lcfg])
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||||
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||||
|
|
|
|||
|
|
@ -142,6 +142,9 @@
|
|||
/* Define to 1 if you have the `closefrom' function. */
|
||||
#undef HAVE_CLOSEFROM
|
||||
|
||||
/* Define to 1 if you have the Codec 2 Audio Decoder/Encoder library. */
|
||||
#undef HAVE_CODEC2
|
||||
|
||||
/* Define to 1 if you have the Corosync library. */
|
||||
#undef HAVE_COROSYNC
|
||||
|
||||
|
|
|
|||
|
|
@ -208,6 +208,11 @@ extern struct ast_format *ast_format_siren7;
|
|||
*/
|
||||
extern struct ast_format *ast_format_opus;
|
||||
|
||||
/*!
|
||||
* \brief Built-in cached Codec 2 format.
|
||||
*/
|
||||
extern struct ast_format *ast_format_codec2;
|
||||
|
||||
/*!
|
||||
* \brief Built-in cached t140 format.
|
||||
*/
|
||||
|
|
|
|||
|
|
@ -107,6 +107,30 @@ static struct ast_codec g723 = {
|
|||
.get_length = g723_length,
|
||||
};
|
||||
|
||||
static int codec2_samples(struct ast_frame *frame)
|
||||
{
|
||||
return 160 * (frame->datalen / 6);
|
||||
}
|
||||
|
||||
static int codec2_length(unsigned int samples)
|
||||
{
|
||||
return (samples / 160) * 6;
|
||||
}
|
||||
|
||||
static struct ast_codec codec2 = {
|
||||
.name = "codec2",
|
||||
.description = "Codec 2",
|
||||
.type = AST_MEDIA_TYPE_AUDIO,
|
||||
.sample_rate = 8000,
|
||||
.minimum_ms = 20,
|
||||
.maximum_ms = 300,
|
||||
.default_ms = 20,
|
||||
.minimum_bytes = 6,
|
||||
.samples_count = codec2_samples,
|
||||
.get_length = codec2_length,
|
||||
.smooth = 1,
|
||||
};
|
||||
|
||||
static int none_samples(struct ast_frame *frame)
|
||||
{
|
||||
return frame->datalen;
|
||||
|
|
@ -863,6 +887,7 @@ int ast_codec_builtin_init(void)
|
|||
{
|
||||
int res = 0;
|
||||
|
||||
res |= CODEC_REGISTER_AND_CACHE(codec2);
|
||||
res |= CODEC_REGISTER_AND_CACHE(g723);
|
||||
res |= CODEC_REGISTER_AND_CACHE(ulaw);
|
||||
res |= CODEC_REGISTER_AND_CACHE(alaw);
|
||||
|
|
|
|||
|
|
@ -217,6 +217,11 @@ struct ast_format *ast_format_siren7;
|
|||
*/
|
||||
struct ast_format *ast_format_opus;
|
||||
|
||||
/*!
|
||||
* \brief Built-in cached codec2 format.
|
||||
*/
|
||||
struct ast_format *ast_format_codec2;
|
||||
|
||||
/*!
|
||||
* \brief Built-in cached t140 format.
|
||||
*/
|
||||
|
|
@ -328,6 +333,7 @@ static void format_cache_shutdown(void)
|
|||
ao2_replace(ast_format_testlaw, NULL);
|
||||
ao2_replace(ast_format_g719, NULL);
|
||||
ao2_replace(ast_format_opus, NULL);
|
||||
ao2_replace(ast_format_codec2, NULL);
|
||||
ao2_replace(ast_format_jpeg, NULL);
|
||||
ao2_replace(ast_format_png, NULL);
|
||||
ao2_replace(ast_format_h261, NULL);
|
||||
|
|
@ -360,7 +366,9 @@ int ast_format_cache_init(void)
|
|||
|
||||
static void set_cached_format(const char *name, struct ast_format *format)
|
||||
{
|
||||
if (!strcmp(name, "g723")) {
|
||||
if (!strcmp(name, "codec2")) {
|
||||
ao2_replace(ast_format_codec2, format);
|
||||
} else if (!strcmp(name, "g723")) {
|
||||
ao2_replace(ast_format_g723, format);
|
||||
} else if (!strcmp(name, "ulaw")) {
|
||||
ao2_replace(ast_format_ulaw, format);
|
||||
|
|
|
|||
|
|
@ -126,6 +126,9 @@ BFD_LIB=@BFD_LIB@
|
|||
BLUETOOTH_INCLUDE=@BLUETOOTH_INCLUDE@
|
||||
BLUETOOTH_LIB=@BLUETOOTH_LIB@
|
||||
|
||||
CODEC2_INCLUDE=@CODEC2_INCLUDE@
|
||||
CODEC2_LIB=@CODEC2_LIB@
|
||||
|
||||
CURL_INCLUDE=@CURL_INCLUDE@
|
||||
CURL_LIB=@CURL_LIB@
|
||||
|
||||
|
|
|
|||
Loading…
Reference in New Issue