add MODCODEC-7, thanks moy
git-svn-id: http://svn.freeswitch.org/svn/freeswitch/trunk@11665 d0543943-73ff-0310-b7d9-9358b9ac24b2
This commit is contained in:
Brian West
parent
0dc800c78e
commit
608807c44c
|
|
@ -0,0 +1,416 @@
|
|||
/*
|
||||
* FreeSWITCH Modular Media Switching Software Library / Soft-Switch Application
|
||||
* Copyright (C) 2005/2006, Anthony Minessale II <anthmct@yahoo.com>
|
||||
*
|
||||
* 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 -- 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 <dahdi/user.h>
|
||||
#include <sys/ioctl.h>
|
||||
|
||||
/*#define DEBUG_DAHDI_CODEC 1*/
|
||||
|
||||
#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)
|
||||
|
||||
#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;
|
||||
static const char transcoding_device[] = "/dev/dahdi/transcode";
|
||||
static const char transcoder_name[] = "DAHDI";
|
||||
|
||||
SWITCH_MODULE_LOAD_FUNCTION(mod_dahdi_load);
|
||||
SWITCH_MODULE_DEFINITION(mod_dahdi, mod_dahdi_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 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;
|
||||
}
|
||||
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 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;
|
||||
struct dahdi_transcoder_formats fmts;
|
||||
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;
|
||||
}
|
||||
|
||||
if (encoding) {
|
||||
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->decoding_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;
|
||||
}
|
||||
/* ulaw requires 8 times more storage than g729 and 12 times more than G723, right? */
|
||||
context->codec_r = (codec->implementation->ianacode == CODEC_G729_IANA_CODE)
|
||||
? 8 : 12;
|
||||
#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
|
||||
}
|
||||
if (decoding) {
|
||||
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
|
||||
}
|
||||
codec->private_info = context;
|
||||
return SWITCH_STATUS_SUCCESS;
|
||||
}
|
||||
|
||||
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_g729;
|
||||
unsigned char ebuf_ulaw[decoded_data_len/2];
|
||||
uint32_t i;
|
||||
struct dahdi_context *context = NULL;
|
||||
#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;
|
||||
dbuf_linear = decoded_data;
|
||||
ebuf_g729 = encoded_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;
|
||||
}
|
||||
#ifdef DEBUG_DAHDI_CODEC
|
||||
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG, "Wrote %d bytes of decoded ulaw data.\n", res);
|
||||
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG, "Attempting to read %d bytes of encoded data.\n", i/context->codec_r);
|
||||
#endif
|
||||
res = read(context->encoding_fd, encoded_data, i/context->codec_r);
|
||||
if (-1 == res) {
|
||||
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;
|
||||
unsigned char dbuf_ulaw[encoded_data_len * ((struct dahdi_context*)codec->private_info)->codec_r];
|
||||
unsigned char *ebuf_g729;
|
||||
uint32_t i;
|
||||
struct dahdi_context *context;
|
||||
#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 (*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.\n", transcoder_name);
|
||||
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, "Wrote %d bytes to decode.\n", res);
|
||||
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG, "Attempting to read from device %d bytes of decoded ulaw data.\n",
|
||||
encoded_data_len*context->codec_r);
|
||||
#endif
|
||||
res = read(context->decoding_fd, dbuf_ulaw, encoded_data_len*context->codec_r);
|
||||
if (-1 == res) {
|
||||
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;
|
||||
}
|
||||
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_load)
|
||||
{
|
||||
switch_api_interface_t *api_interface;
|
||||
switch_codec_interface_t *codec_interface;
|
||||
struct dahdi_transcoder_info info = { 0 };
|
||||
int32_t fd, res;
|
||||
|
||||
total_encoders = 0;
|
||||
total_encoders_usage = 0;
|
||||
total_decoders = 0;
|
||||
total_decoders_usage = 0;
|
||||
|
||||
fd = open(transcoding_device, O_RDWR);
|
||||
if (fd < 0) {
|
||||
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "Failed to open %s transcoder device.\n", transcoder_name);
|
||||
return SWITCH_STATUS_FALSE;
|
||||
}
|
||||
|
||||
for (info.tcnum = 0; !(res = 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/2;
|
||||
continue;
|
||||
}
|
||||
if ((info.dstfmts & DAHDI_FORMAT_ULAW) && (info.srcfmts & (DAHDI_FORMAT_G729A | DAHDI_FORMAT_G723_1))) {
|
||||
total_decoders += info.numchannels/2;
|
||||
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 */
|
||||
int mpf = 20000; /* Algorithmic delay of 15ms with 5ms of look-ahead delay */
|
||||
int spf = 160;
|
||||
int bpfd = 320;
|
||||
int bpfc = 20;
|
||||
int fpnp = 10;
|
||||
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 (10ms frames) */
|
||||
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 (10ms frames) */
|
||||
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:
|
||||
*/
|
||||
Loading…
Reference in New Issue