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[mod_dahdi_codec] Remove from tree

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This commit is contained in:
Andrey Volk 2024-08-28 15:07:02 +03:00
parent 8a9977fa05
commit 7d88add653
8 changed files with 0 additions and 601 deletions
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1
.gitignore vendored
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@ -151,7 +151,6 @@ Release/
/src/mod/applications/mod_test/test/Makefile.in
/src/mod/codecs/mod_com_g729/Makefile
/src/mod/codecs/mod_com_g729/Makefile.in
/src/mod/codecs/mod_dahdi_codec/Makefile
/src/mod/dialplans/mod_dialplan_directory/Makefile
/src/mod/formats/mod_shell_stream/Makefile
/src/mod/languages/mod_lua/mod_lua_wrap.cpp.orig

1
build/modules.conf.in
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@ -64,7 +64,6 @@ codecs/mod_b64
#codecs/mod_clearmode
#codecs/mod_codec2
#codecs/mod_com_g729
#codecs/mod_dahdi_codec
codecs/mod_g723_1
codecs/mod_g729
codecs/mod_h26x

1
build/modules.conf.most
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@ -62,7 +62,6 @@ codecs/mod_b64
codecs/mod_bv
codecs/mod_codec2
#codecs/mod_com_g729
codecs/mod_dahdi_codec
codecs/mod_g723_1
codecs/mod_g729
codecs/mod_h26x

1
configure.ac
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@ -2159,7 +2159,6 @@ AC_CONFIG_FILES([Makefile
src/mod/codecs/mod_clearmode/Makefile
src/mod/codecs/mod_codec2/Makefile
src/mod/codecs/mod_com_g729/Makefile
src/mod/codecs/mod_dahdi_codec/Makefile
src/mod/codecs/mod_g723_1/Makefile
src/mod/codecs/mod_g729/Makefile
src/mod/codecs/mod_h26x/Makefile

2
debian/bootstrap.sh vendored
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@ -710,7 +710,6 @@ Depends: \${misc:Depends}, freeswitch (= \${binary:Version}),
freeswitch-mod-b64 (= \${binary:Version}),
freeswitch-mod-bv (= \${binary:Version}),
freeswitch-mod-codec2 (= \${binary:Version}),
freeswitch-mod-dahdi-codec (= \${binary:Version}),
freeswitch-mod-g723-1 (= \${binary:Version}),
freeswitch-mod-g729 (= \${binary:Version}),
freeswitch-mod-h26x (= \${binary:Version}),
@ -737,7 +736,6 @@ Depends: \${misc:Depends}, freeswitch (= \${binary:Version}),
freeswitch-mod-b64-dbg (= \${binary:Version}),
freeswitch-mod-bv-dbg (= \${binary:Version}),
freeswitch-mod-codec2-dbg (= \${binary:Version}),
freeswitch-mod-dahdi-codec-dbg (= \${binary:Version}),
freeswitch-mod-g723-1-dbg (= \${binary:Version}),
freeswitch-mod-g729-dbg (= \${binary:Version}),
freeswitch-mod-h26x-dbg (= \${binary:Version}),

4
debian/control-modules vendored
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@ -311,10 +311,6 @@ Module: codecs/mod_com_g729
Description: mod_com_g729
Adds mod_com_g729.
Module: codecs/mod_dahdi_codec
Description: mod_dahdi_codec
Adds mod_dahdi_codec.
Module: codecs/mod_g723_1
Description: mod_g723_1
Adds mod_g723_1.

8
src/mod/codecs/mod_dahdi_codec/Makefile.am
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@ -1,8 +0,0 @@
include $(top_srcdir)/build/modmake.rulesam
MODNAME=mod_dahdi_codec
mod_LTLIBRARIES = mod_dahdi_codec.la
mod_dahdi_codec_la_SOURCES = mod_dahdi_codec.c
mod_dahdi_codec_la_CFLAGS = $(AM_CFLAGS)
mod_dahdi_codec_la_LIBADD = $(switch_builddir)/libfreeswitch.la
mod_dahdi_codec_la_LDFLAGS = -avoid-version -module -no-undefined -shared

583
src/mod/codecs/mod_dahdi_codec/mod_dahdi_codec.c
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@ -1,583 +0,0 @@
/*
* FreeSWITCH Modular Media Switching Software Library / Soft-Switch Application
* Copyright (C) 2005-2014, Anthony Minessale II <anthm@freeswitch.org>
*
* Version: MPL 1.1
*
* The contents of this file are subject to the Mozilla Public License Version
* 1.1 (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
* http://www.mozilla.org/MPL/
*
* Software distributed under the License is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
* for the specific language governing rights and limitations under the
* License.
*
* The Original Code is FreeSWITCH Modular Media Switching Software Library / DAHDI codec module
*
* The Initial Developer of the Original Code is
* Moises Silva <moy@sangoma.com>
* Portions created by the Initial Developer are Copyright (C)
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
* Moises Silva <moy@sangoma.com>
*
* mod_dahdi_codec -- DAHDI Codecs (G729A 8.0kbit, G723.1 5.3kbit)
*
* Thanks to Voiceway for sponsoring this module and Neocenter for providing the DAHDI hardware to test
*
*/
#include <switch.h>
#include <g711.h>
#include <poll.h>
#include <linux/types.h> /* __u32 */
#include <sys/ioctl.h>
#include <unistd.h>
#include <fcntl.h>
#include <errno.h>
/*
* some rules to keep in mind for G729 (the frame size may be different for G723)
* we cannot write more than SFRAME_SIZE (320) - sizeof(struct rtp_packet) which
* seems to be 266 bytes
* if we write less than 160 bytes (1 ulaw frame which is 20 bytes of G729 bytes, a read will block forever)
* TODO: do buffering ourselves to provide just the fixed amount of samples that the card expects
* */
#define DAHDI_G729_INPUT_FRAME_SIZE 160
#define DAHDI_G729_OUTPUT_FRAME_SIZE 20
/*#define DEBUG_DAHDI_CODEC 1*/
#define CODEC_G729_IANA_CODE 18
#define CODEC_G723_IANA_CODE 4
switch_mutex_t *transcoder_counter_mutex;
static uint32_t total_encoders = 0;
static uint32_t total_encoders_usage = 0;
static uint32_t total_decoders = 0;
static uint32_t total_decoders_usage = 0;
/*
Zaptel/DAHDI definitions to not require the headers installed
Zaptel and DAHDI are binary compatible (at least in the transcoder interface)
*/
#define DAHDI_TC_CODE 'T'
#define DAHDI_TC_ALLOCATE _IOW(DAHDI_TC_CODE, 1, struct dahdi_transcoder_formats)
#define DAHDI_TC_GETINFO _IOWR(DAHDI_TC_CODE, 2, struct dahdi_transcoder_info)
#define DAHDI_FORMAT_G723_1 (1 << 0)
#define DAHDI_FORMAT_ULAW (1 << 2)
#define DAHDI_FORMAT_SLINEAR (1 << 6)
#define DAHDI_FORMAT_G729A (1 << 8)
struct dahdi_transcoder_formats {
__u32 srcfmt;
__u32 dstfmt;
};
struct dahdi_transcoder_info {
__u32 tcnum;
char name[80];
__u32 numchannels;
__u32 dstfmts;
__u32 srcfmts;
};
static const char transcoding_device_dahdi[] = "/dev/dahdi/transcode";
static const char transcoder_name_dahdi[] = "DAHDI";
static const char transcoding_device_zap[] = "/dev/zap/transcode";
static const char transcoder_name_zap[] = "Zap";
static const char *transcoding_device = NULL;
static const char *transcoder_name = NULL;
SWITCH_MODULE_LOAD_FUNCTION(mod_dahdi_codec_load);
SWITCH_MODULE_DEFINITION(mod_dahdi_codec, mod_dahdi_codec_load, NULL, NULL);
struct dahdi_context {
int32_t encoding_fd;
int32_t decoding_fd;
uint8_t codec_r;
};
static int32_t switch_dahdi_get_transcoder(struct dahdi_transcoder_formats *fmts)
{
int32_t fdflags;
int32_t fd = open(transcoding_device, O_RDWR);
if (fd < 0) {
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "Failed to open %s transcoder device: %s.\n", transcoder_name, strerror(errno));
return -1;
}
if (ioctl(fd, DAHDI_TC_ALLOCATE, fmts)) {
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "Failed to attach to transcoder: %s.\n", strerror(errno));
close(fd);
return -1;
}
fdflags = fcntl(fd, F_GETFL);
if (fdflags > -1) {
fdflags |= O_NONBLOCK;
if (fcntl(fd, F_SETFL, fdflags)) {
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "Could not set non-block mode in %s transcoder FD: %s\n",
transcoder_name, strerror(errno));
/* should we abort? this may cause channels to hangup when overruning the device
* see jira dahdi codec issue MODCODEC-8 (Hung Calls and Codec DAHDI G.729A 8.0k decoder error!)
* */
}
} else {
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "Could not get flags from %s transcoder FD: %s\n", transcoder_name, strerror(errno));
}
if (fmts->srcfmt & DAHDI_FORMAT_ULAW) {
switch_mutex_lock(transcoder_counter_mutex);
total_encoders_usage++;
switch_mutex_unlock(transcoder_counter_mutex);
} else {
switch_mutex_lock(transcoder_counter_mutex);
total_decoders_usage++;
switch_mutex_unlock(transcoder_counter_mutex);
}
return fd;
}
static switch_status_t init_encoder(switch_codec_t *codec)
{
struct dahdi_transcoder_formats fmts;
struct dahdi_context *context = codec->private_info;
fmts.srcfmt = DAHDI_FORMAT_ULAW;
fmts.dstfmt = (codec->implementation->ianacode == CODEC_G729_IANA_CODE)
? DAHDI_FORMAT_G729A : DAHDI_FORMAT_G723_1;
context->encoding_fd = switch_dahdi_get_transcoder(&fmts);
if (context->encoding_fd < 0) {
#ifdef DEBUG_DAHDI_CODEC
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG, "encoding requested and denied with %d/%d.\n", fmts.srcfmt, fmts.dstfmt);
#endif
return SWITCH_STATUS_FALSE;
}
#ifdef DEBUG_DAHDI_CODEC
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG, "Encoding requested and granted with %d/%d.\n", fmts.srcfmt, fmts.dstfmt);
#endif
return SWITCH_STATUS_SUCCESS;
}
static switch_status_t init_decoder(switch_codec_t *codec)
{
struct dahdi_transcoder_formats fmts;
struct dahdi_context *context = codec->private_info;
fmts.dstfmt = DAHDI_FORMAT_ULAW;
fmts.srcfmt = (codec->implementation->ianacode == CODEC_G729_IANA_CODE)
? DAHDI_FORMAT_G729A : DAHDI_FORMAT_G723_1;
context->decoding_fd = switch_dahdi_get_transcoder(&fmts);
if (context->decoding_fd < 0) {
#ifdef DEBUG_DAHDI_CODEC
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG, "Decoding requested and denied with %d/%d.\n", fmts.srcfmt, fmts.dstfmt);
#endif
return SWITCH_STATUS_FALSE;
}
#ifdef DEBUG_DAHDI_CODEC
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG, "Decoding requested and granted with %d/%d.\n", fmts.srcfmt, fmts.dstfmt);
#endif
return SWITCH_STATUS_SUCCESS;
}
static switch_status_t switch_dahdi_init(switch_codec_t *codec, switch_codec_flag_t flags, const switch_codec_settings_t *codec_settings)
{
uint32_t encoding, decoding;
struct dahdi_context *context = NULL;
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG, "Switch DAHDI init called.\n");
encoding = (flags & SWITCH_CODEC_FLAG_ENCODE);
decoding = (flags & SWITCH_CODEC_FLAG_DECODE);
if (!(encoding || decoding)) {
#ifdef DEBUG_DAHDI_CODEC
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "No encoding or decoding requested for DAHDI transcoder?.\n");
#endif
return SWITCH_STATUS_FALSE;
}
if (!(context = switch_core_alloc(codec->memory_pool, sizeof(*context)))) {
#ifdef DEBUG_DAHDI_CODEC
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "Failed to allocate memory for dahdi codec context.\n");
#endif
return SWITCH_STATUS_FALSE;
}
codec->private_info = context;
context->encoding_fd = -1;
context->decoding_fd = -1;
/* ulaw requires 8 times more storage than g729 and 12 times more than G723, right?
* this can be used to calculate the target buffer when encoding and decoding
* */
context->codec_r = (codec->implementation->ianacode == CODEC_G729_IANA_CODE)
? 8 : 12;
return SWITCH_STATUS_SUCCESS;
}
static int wait_for_transcoder(int fd)
{
/* let's wait a bit for the transcoder, if in 20msthe driver does not notify us that its ready to give us something
then just bail out with 0 bytes encoded/decoded as result, I'd expect the card to hold that buffer and return it later */
int res = 0;
struct pollfd readpoll;
memset(&readpoll, 0, sizeof(readpoll));
readpoll.fd = fd;
readpoll.events = POLLIN;
/* my testing shows that it does not take more than 1ms to encode a 160 bytes frame ulaw to g729,
I dont think there is much difference decoding and for g723, waiting 10ms seems more than reasonable */
res = poll(&readpoll, 1, 10);
return res;
}
static switch_status_t switch_dahdi_encode(switch_codec_t *codec,
switch_codec_t *other_codec,
void *decoded_data,
uint32_t decoded_data_len,
uint32_t decoded_rate, void *encoded_data, uint32_t *encoded_data_len, uint32_t *encoded_rate,
unsigned int *flag)
{
int32_t res;
short *dbuf_linear;
unsigned char ebuf_ulaw[decoded_data_len / 2];
uint32_t i;
struct dahdi_context *context = NULL;
switch_status_t status;
#ifdef DEBUG_DAHDI_CODEC
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG, "Switch DAHDI encode called to encode %d bytes.\n", decoded_data_len);
#endif
context = codec->private_info;
if (context->encoding_fd == -1) {
if ((status = init_encoder(codec)) != SWITCH_STATUS_SUCCESS) {
return status;
}
}
dbuf_linear = decoded_data;
for (i = 0; i < decoded_data_len / sizeof(short); i++) {
ebuf_ulaw[i] = linear_to_ulaw(dbuf_linear[i]);
}
#ifdef DEBUG_DAHDI_CODEC
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG, "Writing %d bytes of decoded ulaw data.\n", i);
#endif
res = write(context->encoding_fd, ebuf_ulaw, i);
if (-1 == res) {
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "Failed to write to %s encoder device.\n", transcoder_name);
return SWITCH_STATUS_FALSE;
}
if (i != res) {
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "Requested to write %d bytes to %s encoder device, but only wrote %d bytes.\n", i,
transcoder_name, res);
return SWITCH_STATUS_FALSE;
}
res = wait_for_transcoder(context->encoding_fd);
if (-1 == res) {
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "Failed to poll on %s encoder device: %s.\n", transcoder_name, strerror(errno));
return SWITCH_STATUS_FALSE;
}
if (0 == res) {
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG, "No output on %s encoder device.\n", transcoder_name);
*encoded_data_len = 0;
return SWITCH_STATUS_SUCCESS;
}
#ifdef DEBUG_DAHDI_CODEC
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG, "Attempting to read %d bytes of encoded data.\n", *encoded_data_len);
#endif
res = read(context->encoding_fd, encoded_data, *encoded_data_len);
if (-1 == res) {
if (EAGAIN == errno || EWOULDBLOCK == errno) {
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG, "No output on %s encoder device (%s).\n", transcoder_name, strerror(errno));
*encoded_data_len = 0;
return SWITCH_STATUS_SUCCESS;
}
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "Failed to read from %s encoder device: %s.\n", transcoder_name, strerror(errno));
return SWITCH_STATUS_FALSE;
}
*encoded_data_len = res;
#ifdef DEBUG_DAHDI_CODEC
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG, "Read %d bytes of encoded data.\n", res);
#endif
return SWITCH_STATUS_SUCCESS;
}
static switch_status_t switch_dahdi_decode(switch_codec_t *codec,
switch_codec_t *other_codec,
void *encoded_data,
uint32_t encoded_data_len,
uint32_t encoded_rate, void *decoded_data, uint32_t *decoded_data_len, uint32_t *decoded_rate,
unsigned int *flag)
{
int32_t res;
short *dbuf_linear;
// we only can decode up to half ulaw bytes of whatever their destiny linear buffer is
unsigned char dbuf_ulaw[*decoded_data_len / 2];
unsigned char *ebuf_g729;
uint32_t i;
struct dahdi_context *context;
switch_status_t status;
#ifdef DEBUG_DAHDI_CODEC
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG, "Switch DAHDI decode called to decode %d bytes.\n", encoded_data_len);
#endif
context = codec->private_info;
dbuf_linear = decoded_data;
ebuf_g729 = encoded_data;
if (context->decoding_fd == -1) {
if ((status = init_decoder(codec)) != SWITCH_STATUS_SUCCESS) {
return status;
}
}
if (*flag & SWITCH_CODEC_FLAG_SILENCE) {
memset(dbuf_linear, 0, codec->implementation->decoded_bytes_per_packet);
*decoded_data_len = codec->implementation->decoded_bytes_per_packet;
#ifdef DEBUG_DAHDI_CODEC
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG, "Switch DAHDI decode in silence returned %d bytes.\n", *decoded_data_len);
#endif
return SWITCH_STATUS_SUCCESS;
}
#ifdef DEBUG_DAHDI_CODEC
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG, "Writing %d bytes to decode.\n", encoded_data_len);
#endif
res = write(context->decoding_fd, ebuf_g729, encoded_data_len);
if (-1 == res) {
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "Failed to write to %s decoder device: %s.\n", transcoder_name, strerror(errno));
return SWITCH_STATUS_FALSE;
}
if (encoded_data_len != res) {
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "Requested to write %d bytes to %s decoder device, but only wrote %d bytes.\n",
encoded_data_len, transcoder_name, res);
return SWITCH_STATUS_FALSE;
}
#ifdef DEBUG_DAHDI_CODEC
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG, "Attempting to read from device %d bytes of decoded ulaw data.\n", sizeof(dbuf_ulaw));
#endif
res = wait_for_transcoder(context->decoding_fd);
if (-1 == res) {
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "Failed to poll on %s decoder device: %s.\n", transcoder_name, strerror(errno));
return SWITCH_STATUS_FALSE;
}
if (0 == res) {
memset(dbuf_linear, 0, codec->implementation->decoded_bytes_per_packet);
*decoded_data_len = codec->implementation->decoded_bytes_per_packet;
#ifdef DEBUG_DAHDI_CODEC
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG, "No output on %s decoder device, returning silence frame of %d bytes.\n", transcoder_name,
*decoded_data_len);
#endif
return SWITCH_STATUS_SUCCESS;
}
res = read(context->decoding_fd, dbuf_ulaw, sizeof(dbuf_ulaw));
if (-1 == res) {
if (EAGAIN == errno || EWOULDBLOCK == errno) {
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG, "No output on %s decoder device (%s).\n", transcoder_name, strerror(errno));
*decoded_data_len = 0;
return SWITCH_STATUS_SUCCESS;
}
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "Failed to read from %s decoder device: %s.\n", transcoder_name, strerror(errno));
return SWITCH_STATUS_FALSE;
}
for (i = 0; i < res; i++) {
dbuf_linear[i] = ulaw_to_linear(dbuf_ulaw[i]);
}
*decoded_data_len = i * 2;
#ifdef DEBUG_DAHDI_CODEC
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG, "Switch DAHDI decode returned %d bytes.\n", *decoded_data_len);
#endif
return SWITCH_STATUS_SUCCESS;
}
static switch_status_t switch_dahdi_destroy(switch_codec_t *codec)
{
/* memory pool takes care of the private_info memory */
struct dahdi_context *context = codec->private_info;
if (context->encoding_fd >= 0) {
switch_mutex_lock(transcoder_counter_mutex);
total_encoders_usage--;
switch_mutex_unlock(transcoder_counter_mutex);
close(context->encoding_fd);
}
if (context->decoding_fd >= 0) {
switch_mutex_lock(transcoder_counter_mutex);
total_decoders_usage--;
switch_mutex_unlock(transcoder_counter_mutex);
close(context->decoding_fd);
}
codec->private_info = NULL;
return SWITCH_STATUS_SUCCESS;
}
SWITCH_STANDARD_API(dahdi_transcode_usage)
{
if (!total_encoders && !total_decoders) {
stream->write_function(stream, "No DAHDI transcoding hardware found.\n");
return SWITCH_STATUS_SUCCESS;
}
switch_mutex_lock(transcoder_counter_mutex);
stream->write_function(stream, "Using %d encoders of a total of %d available.\n", total_encoders_usage, total_encoders);
stream->write_function(stream, "Using %d decoders of a total of %d available.\n", total_decoders_usage, total_decoders);
switch_mutex_unlock(transcoder_counter_mutex);
return SWITCH_STATUS_SUCCESS;
}
SWITCH_MODULE_LOAD_FUNCTION(mod_dahdi_codec_load)
{
switch_api_interface_t *api_interface;
switch_codec_interface_t *codec_interface;
struct stat statbuf;
struct dahdi_transcoder_info info = { 0 };
int32_t fd;
int mpf = 20000; /* Algorithmic delay of 15ms with 5ms of look-ahead delay */
int spf = 160;
int bpfd = 320;
int bpfc = 20;
int fpnp = 20;
total_encoders = 0;
total_encoders_usage = 0;
total_decoders = 0;
total_decoders_usage = 0;
/* Let's check if DAHDI or Zaptel device should be used */
if (!stat(transcoding_device_dahdi, &statbuf)) {
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_INFO, "DAHDI transcoding device found.\n");
transcoding_device = transcoding_device_dahdi;
transcoder_name = transcoder_name_dahdi;
} else if (!stat(transcoding_device_zap, &statbuf)) {
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_INFO, "Zap transcoding device found.\n");
transcoding_device = transcoding_device_zap;
transcoder_name = transcoder_name_zap;
} else {
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "No DAHDI or Zap transcoder device was found in /dev/.\n");
return SWITCH_STATUS_FALSE;
}
fd = open(transcoding_device, O_RDWR);
if (fd < 0) {
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "Failed to open %s transcoder device: %s.\n", transcoder_name, strerror(errno));
return SWITCH_STATUS_FALSE;
}
for (info.tcnum = 0; !ioctl(fd, DAHDI_TC_GETINFO, &info); info.tcnum++) {
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG, "Found dahdi transcoder name: %s\n", info.name);
if ((info.srcfmts & DAHDI_FORMAT_ULAW) && (info.dstfmts & (DAHDI_FORMAT_G729A | DAHDI_FORMAT_G723_1))) {
total_encoders += info.numchannels;
continue;
}
if ((info.dstfmts & DAHDI_FORMAT_ULAW) && (info.srcfmts & (DAHDI_FORMAT_G729A | DAHDI_FORMAT_G723_1))) {
total_decoders += info.numchannels;
continue;
}
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_NOTICE, "Not using transcoder %s, we just support ULAW and G723.1/G729A", info.name);
}
close(fd);
if (!total_encoders && !total_decoders) {
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_WARNING, "No DAHDI transcoders found.\n");
return SWITCH_STATUS_FALSE;
}
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_NOTICE, "Found %d ULAW to G729A/G723.1 encoders.\n", total_encoders);
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_NOTICE, "Found %d G729A/G723.1 to ULAW decoders.\n", total_decoders);
switch_mutex_init(&transcoder_counter_mutex, SWITCH_MUTEX_UNNESTED, pool);
/* connect my internal structure to the blank pointer passed to me */
*module_interface = switch_loadable_module_create_module_interface(pool, modname);
SWITCH_ADD_CODEC(codec_interface, "DAHDI G.729A 8.0k"); /* 8.0kbit */
switch_core_codec_add_implementation(pool, codec_interface, SWITCH_CODEC_TYPE_AUDIO, /* enumeration defining the type of the codec */
18, /* the IANA code number */
"G729", /* the IANA code name */
NULL, /* default fmtp to send (can be overridden by the init function) */
8000, /* samples transferred per second */
8000, /* actual samples transferred per second */
8000, /* bits transferred per second */
mpf, /* number of microseconds per frame */
spf, /* number of samples per frame */
bpfd, /* number of bytes per frame decompressed */
bpfc, /* number of bytes per frame compressed */
1, /* number of channels represented */
fpnp, /* number of frames per network packet */
switch_dahdi_init, /* function to initialize a codec handle using this implementation */
switch_dahdi_encode, /* function to encode raw data into encoded data */
switch_dahdi_decode, /* function to decode encoded data into raw data */
switch_dahdi_destroy); /* deinitalize a codec handle using this implementation */
mpf = 30000;
spf = 240;
bpfd = 480;
bpfc = 30;
fpnp = 30;
switch_core_codec_add_implementation(pool, codec_interface, SWITCH_CODEC_TYPE_AUDIO, /* enumeration defining the type of the codec */
18, /* the IANA code number */
"G729", /* the IANA code name */
NULL, /* default fmtp to send (can be overridden by the init function) */
8000, /* samples transferred per second */
8000, /* actual samples transferred per second */
8000, /* bits transferred per second */
mpf, /* number of microseconds per frame */
spf, /* number of samples per frame */
bpfd, /* number of bytes per frame decompressed */
bpfc, /* number of bytes per frame compressed */
1, /* number of channels represented */
fpnp, /* number of frames per network packet */
switch_dahdi_init, /* function to initialize a codec handle using this implementation */
switch_dahdi_encode, /* function to encode raw data into encoded data */
switch_dahdi_decode, /* function to decode encoded data into raw data */
switch_dahdi_destroy); /* deinitalize a codec handle using this implementation */
SWITCH_ADD_CODEC(codec_interface, "DAHDI G.723.1 5.3k"); /* 5.3kbit */
mpf = 30000; /* Algorithmic delay of 37.5ms with 7.5ms of look-ahead delay */
spf = 240;
bpfd = 480;
bpfc = 20;
fpnp = 10;
switch_core_codec_add_implementation(pool, codec_interface, SWITCH_CODEC_TYPE_AUDIO, /* enumeration defining the type of the codec */
4, /* the IANA code number */
"G723", /* the IANA code name */
NULL, /* default fmtp to send (can be overridden by the init function) */
8000, /* samples transferred per second */
8000, /* actual samples transferred per second */
8000, /* bits transferred per second */
mpf, /* number of microseconds per frame */
spf, /* number of samples per frame */
bpfd, /* number of bytes per frame decompressed */
bpfc, /* number of bytes per frame compressed */
1, /* number of channels represented */
fpnp, /* number of frames per network packet */
switch_dahdi_init, /* function to initialize a codec handle using this implementation */
switch_dahdi_encode, /* function to encode raw data into encoded data */
switch_dahdi_decode, /* function to decode encoded data into raw data */
switch_dahdi_destroy); /* deinitalize a codec handle using this implementation */
SWITCH_ADD_API(api_interface, "dahdi_transcode", "DAHDI Transcode", dahdi_transcode_usage, NULL);
switch_console_set_complete("add dahdi_transcode");
/* indicate that the module should continue to be loaded */
return SWITCH_STATUS_SUCCESS;
}
/* For Emacs:
* Local Variables:
* mode:c
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* End:
* For VIM:
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*/