+++ /dev/null
-/*
- * 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
- * indent-tabs-mode:t
- * tab-width:4
- * c-basic-offset:4
- * End:
- * For VIM:
- * vim:set softtabstop=4 shiftwidth=4 tabstop=4 noet:
- */
projects / thirdparty / freeswitch.git / commitdiff
