FS-10530: [mod_opusfile] new module, read and write ogg/opus files (".opus" extension)

switch_sql_queue_manager
Dragos Oancea 6 years ago
parent a1740fb600
commit 2a4cf1f04e
  1. 1
      build/modules.conf.in
  2. 1
      conf/testing/autoload_configs/modules.conf.xml
  3. 1
      conf/vanilla/autoload_configs/modules.conf.xml
  4. 9
      configure.ac
  5. 5
      debian/control-modules
  6. 17
      freeswitch.spec
  7. 19
      src/mod/formats/mod_opusfile/Makefile.am
  8. 489
      src/mod/formats/mod_opusfile/mod_opusfile.c

@ -124,6 +124,7 @@ formats/mod_sndfile
#formats/mod_ssml
formats/mod_tone_stream
#formats/mod_vlc
#formats/mod_opusfile
#languages/mod_basic
#languages/mod_java
languages/mod_lua

@ -26,6 +26,7 @@
<load module="mod_opus"/>
<load module="mod_sndfile"/>
<load module="mod_native_file"/>
<load module="mod_opusfile"/>
<load module="mod_local_stream"/>
<load module="mod_tone_stream"/>
<load module="mod_lua"/>

@ -104,6 +104,7 @@
<!--<load module="mod_av"/>-->
<load module="mod_sndfile"/>
<load module="mod_native_file"/>
<!--<load module="mod_opusfile"/>-->
<load module="mod_png"/>
<!-- <load module="mod_shell_stream"/> -->
<!--For icecast/mp3 streams/files-->

@ -1383,6 +1383,14 @@ PKG_CHECK_MODULES([OPENCV], [opencv >= 2.4.5],[
AM_CONDITIONAL([HAVE_OPENCV],[true])],[
AC_MSG_RESULT([no]); AM_CONDITIONAL([HAVE_OPENCV],[false])])
PKG_CHECK_MODULES([OPUSFILE_DECODE], [opusfile >= 0.5],[
AM_CONDITIONAL([HAVE_OPUSFILE_DECODE],[true])],[
AC_MSG_RESULT([no]); AM_CONDITIONAL([HAVE_OPUSFILE_DECODE],[false])])
PKG_CHECK_MODULES([OPUSFILE_ENCODE], [libopusenc >= 0.1],[
AM_CONDITIONAL([HAVE_OPUSFILE_ENCODE],[true])],[
AC_MSG_RESULT([no]); AM_CONDITIONAL([HAVE_OPUSFILE_ENCODE],[false])])
PKG_CHECK_MODULES([MAGICK], [ImageMagick >= 6.0.0],[
AM_CONDITIONAL([HAVE_MAGICK],[true])],[
AC_MSG_RESULT([no]); AM_CONDITIONAL([HAVE_MAGICK],[false])])
@ -1893,6 +1901,7 @@ AC_CONFIG_FILES([Makefile
src/mod/formats/mod_imagick/Makefile
src/mod/formats/mod_local_stream/Makefile
src/mod/formats/mod_native_file/Makefile
src/mod/formats/mod_opusfile/Makefile
src/mod/formats/mod_shell_stream/Makefile
src/mod/formats/mod_shout/Makefile
src/mod/formats/mod_sndfile/Makefile

@ -616,6 +616,11 @@ Module: formats/mod_webm
Description: Adds mod_webm
Adds mod_webm.
Module: formats/mod_opusfile
Description: mod_opusfile
Adds mod_opusfile.
Build-Depends: libopusfile-dev
## mod/languages
Module: languages/mod_basic

@ -38,6 +38,7 @@
%define build_mod_rayo 1
%define build_mod_ssml 1
%define build_mod_shout 0
%define build_mod_opusfile 0
%{?with_sang_tc:%define build_sng_tc 1 }
%{?with_sang_isdn:%define build_sng_isdn 1 }
@ -46,6 +47,7 @@
%{?with_timerfd:%define build_timerfd 1 }
%{?with_mod_esl:%define build_mod_esl 1 }
%{?with_mod_shout:%define build_mod_shout 1 }
%{?with_mod_opusfile:%define build_mod_opusfile 1 }
%define version 1.7.0
%define release 1
@ -1149,6 +1151,18 @@ Mod Shout is a FreeSWITCH module to allow you to stream audio from MP3s or a i
shoutcast stream.
%endif
%if %{build_mod_opusfile}
%package format-mod-opusfile
Summary: Plays Opus encoded files
Group: System/Libraries
Requires: %{name} = %{version}-%{release}
Requires: opusfile >= 0.5
BuildRequires: opusfile-devel >= 0.5
%description format-mod-opusfile
Mod Opusfile is a FreeSWITCH module to allow you to play Opus encoded files
%endif
%if %{build_mod_ssml}
%package format-ssml
Summary: Adds Speech Synthesis Markup Language (SSML) parser format for the FreeSWITCH open source telephony platform
@ -1537,6 +1551,9 @@ FORMATS_MODULES+=" formats/mod_shout "
%if %{build_mod_ssml}
FORMATS_MODULES+=" formats/mod_ssml"
%endif
%if %{build_mod_opusfile}
FORMATS_MODULES+=" formats/mod_opusfile"
%endif
######################################################################################################################
#

@ -0,0 +1,19 @@
include $(top_srcdir)/build/modmake.rulesam
MODNAME=mod_opusfile
mod_LTLIBRARIES = mod_opusfile.la
mod_opusfile_la_SOURCES = mod_opusfile.c
mod_opusfile_la_CFLAGS = $(AM_CFLAGS)
mod_opusfile_la_LIBADD = $(switch_builddir)/libfreeswitch.la
mod_opusfile_la_LDFLAGS = -avoid-version -module -no-undefined -shared
if HAVE_OPUSFILE_DECODE
mod_opusfile_la_CFLAGS += -I$(OPUSFILE_DECODE_CFLAGS)
mod_opusfile_la_LIBADD += $(OPUSFILE_DECODE_LIBS)
endif
if HAVE_OPUSFILE_ENCODE
mod_opusfile_la_CFLAGS += -I$(OPUSFILE_ENCODE_CFLAGS) -DHAVE_OPUSFILE_ENCODE
mod_opusfile_la_LIBADD += $(OPUSFILE_ENCODE_LIBS)
endif

@ -0,0 +1,489 @@
/*
* 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 / Soft-Switch Application
*
* The Initial Developer of the Original Code is
* Anthony Minessale II <anthm@freeswitch.org>
* Portions created by the Initial Developer are Copyright (C)
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
*
* Dragos Oancea <dragos.oancea@nexmo.com> (mod_opusfile.c)
*
*
* mod_opusfile.c -- Read and Write OGG/Opus files . Some parts inspired from mod_shout.c, libopusfile, libopusenc
*
*/
#include <switch.h>
#include <opusfile.h>
#ifdef HAVE_OPUSFILE_ENCODE
#include <opus/opusenc.h>
#endif
#define OPUSFILE_MAX 32*1024
#define TC_BUFFER_SIZE 1024 * 128
SWITCH_MODULE_LOAD_FUNCTION(mod_opusfile_load);
SWITCH_MODULE_DEFINITION(mod_opusfile, mod_opusfile_load, NULL, NULL);
struct opus_file_context {
switch_file_t *fd;
OggOpusFile *of;
ogg_int64_t duration;
int output_seekable;
ogg_int64_t pcm_offset;
ogg_int64_t pcm_print_offset;
ogg_int64_t next_pcm_offset;
ogg_int64_t nsamples;
opus_int32 bitrate;
int li;
int prev_li;
switch_mutex_t *audio_mutex;
switch_buffer_t *audio_buffer;
unsigned char decode_buf[OPUSFILE_MAX];
int eof;
switch_thread_rwlock_t *rwlock;
switch_file_handle_t *handle;
size_t samplerate;
int channels;
size_t buffer_seconds;
opus_int16 *opusbuf;
switch_size_t opusbuflen;
FILE *fp;
#ifdef HAVE_OPUSFILE_ENCODE
OggOpusEnc *enc;
OggOpusComments *comments;
#endif
switch_memory_pool_t *pool;
};
typedef struct opus_file_context opus_file_context;
static struct {
int debug;
} globals;
static switch_status_t switch_opusfile_decode(opus_file_context *context, void *data, size_t bytes, int channels)
{
int ret;
while (!(context->eof) && switch_buffer_inuse(context->audio_buffer) < bytes) {
if (channels == 1) {
ret = op_read(context->of, (opus_int16 *)context->decode_buf, sizeof(context->decode_buf), NULL);
} else if (channels > 1) {
ret = op_read_stereo(context->of, (opus_int16 *)context->decode_buf, sizeof(context->decode_buf));
} else {
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "[OGG/OPUS File] Invalid number of channels");
return SWITCH_STATUS_FALSE;
}
if (ret < 0) {
switch(ret) {
case OP_HOLE: /* There was a hole in the data, and some samples may have been skipped. Call this function again to continue decoding past the hole.*/
case OP_EREAD: /*An underlying read operation failed. This may signal a truncation attack from an <https:> source.*/
case OP_EFAULT: /* An internal memory allocation failed. */
case OP_EIMPL: /*An unseekable stream encountered a new link that used a feature that is not implemented, such as an unsupported channel family.*/
case OP_EINVAL: /* The stream was only partially open. */
case OP_ENOTFORMAT: /* An unseekable stream encountered a new link that did not have any logical Opus streams in it. */
case OP_EBADHEADER: /*An unseekable stream encountered a new link with a required header packet that was not properly formatted, contained illegal values, or was missing altogether.*/
case OP_EVERSION: /*An unseekable stream encountered a new link with an ID header that contained an unrecognized version number.*/
case OP_EBADPACKET: /*Failed to properly decode the next packet.*/
case OP_EBADLINK: /*We failed to find data we had seen before.*/
case OP_EBADTIMESTAMP: /*An unseekable stream encountered a new link with a starting timestamp that failed basic validity checks.*/
default:
goto err;
break;
}
} else if (ret == 0) {
/*The number of samples returned may be 0 if the buffer was too small to store even a single sample for both channels, or if end-of-file was reached*/
context->eof = 1;
if (globals.debug) {
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG, "[OGG/OPUS file]: EOF reached\n");
}
break;
} else /* (ret > 0)*/ {
/*The number of samples read per channel on success*/
switch_buffer_write(context->audio_buffer, context->decode_buf, ret * sizeof(int16_t) * channels);
if (globals.debug) {
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG,
"[OGG/OPUS File]: Read samples: [%d]. Wrote bytes to audio buffer: [%d]\n", ret, (int)(ret * sizeof(int16_t) * channels));
}
}
}
return SWITCH_STATUS_SUCCESS;
err:
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "[OGG/OPUS File]: error decoding file: [%d]\n", ret);
return SWITCH_STATUS_FALSE;
}
static switch_status_t switch_opusfile_open(switch_file_handle_t *handle, const char *path)
{
opus_file_context *context;
char *ext;
unsigned int flags = 0;
int ret;
switch_status_t status = SWITCH_STATUS_SUCCESS;
if ((ext = strrchr(path, '.')) == 0) {
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "[OGG/OPUS File] Invalid Format\n");
return SWITCH_STATUS_GENERR;
}
ext++;
if ((context = switch_core_alloc(handle->memory_pool, sizeof(*context))) == 0) {
return SWITCH_STATUS_MEMERR;
}
context->pool = handle->memory_pool;
switch_thread_rwlock_create(&(context->rwlock), context->pool);
switch_thread_rwlock_rdlock(context->rwlock);
switch_mutex_init(&context->audio_mutex, SWITCH_MUTEX_NESTED, context->pool);
if (switch_test_flag(handle, SWITCH_FILE_FLAG_WRITE)) {
flags |= SWITCH_FOPEN_WRITE | SWITCH_FOPEN_CREATE;
if (switch_test_flag(handle, SWITCH_FILE_WRITE_APPEND) || switch_test_flag(handle, SWITCH_FILE_WRITE_OVER)) {
flags |= SWITCH_FOPEN_READ;
} else {
flags |= SWITCH_FOPEN_TRUNCATE;
}
}
if (switch_test_flag(handle, SWITCH_FILE_FLAG_READ)) {
if (switch_buffer_create_dynamic(&context->audio_buffer, TC_BUFFER_SIZE, TC_BUFFER_SIZE * 2, 0) != SWITCH_STATUS_SUCCESS) {
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "Memory Error!\n");
switch_goto_status(SWITCH_STATUS_GENERR, out);
}
flags |= SWITCH_FOPEN_READ;
}
handle->samples = 0;
handle->samplerate = context->samplerate = 48000;
handle->format = 0;
handle->sections = 0;
handle->seekable = 1;
handle->speed = 0;
handle->pos = 0;
handle->private_info = context;
context->handle = handle;
memcpy(handle->file_path, path, strlen(path));
#ifdef HAVE_OPUSFILE_ENCODE
if (switch_test_flag(handle, SWITCH_FILE_FLAG_WRITE)) {
int err_open;
context->channels = handle->channels;
context->samplerate = handle->samplerate;
handle->seekable = 0;
context->comments = ope_comments_create();
ope_comments_add(context->comments, "METADATA", "Freeswitch/mod_opusfile");
context->enc = ope_encoder_create_file(handle->file_path, context->comments, context->samplerate, context->channels, 0, &err_open);
if (!context->enc) {
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "[OGG/OPUS File] Can't open file for writing\n");
switch_goto_status(SWITCH_STATUS_FALSE, out);
}
goto out;
}
#endif
context->of = op_open_file(path, &ret);
if (!context->of) {
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "[OGG/OPUS File] Error opening %s\n", path);
switch_goto_status(SWITCH_STATUS_GENERR, out);
}
if (switch_test_flag(handle, SWITCH_FILE_WRITE_APPEND)) {
op_pcm_seek(context->of, 0); // overwrite
handle->pos = 0;
}
context->prev_li = -1;
context->nsamples = 0;
handle->channels = context->channels = op_channel_count(context->of, -1);
context->pcm_offset = op_pcm_tell(context->of);
if(context->pcm_offset!=0){
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG, "[OGG/OPUS File] Non-zero starting PCM offset: [%li]\n", (long)context->pcm_offset);
}
context->pcm_print_offset = context->pcm_offset - 48000;
context->bitrate = 0;
context->buffer_seconds = 1;
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_INFO, "[OGG/OPUS File] Opening File [%s] %dhz\n", path, handle->samplerate);
context->li = op_current_link(context->of);
if (context->li != context->prev_li) {
const OpusHead *head;
const OpusTags *tags;
head=op_head(context->of, context->li);
if (head) {
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_INFO, "[OGG/OPUS File] Channels: %i\n", head->channel_count);
if (head->input_sample_rate) {
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_INFO, "[OGG/OPUS File] Original sampling rate: %lu Hz\n", (unsigned long)head->input_sample_rate);
}
}
if (op_seekable(context->of)) {
ogg_int64_t duration;
opus_int64 size;
duration = op_pcm_total(context->of, context->li);
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_INFO , "[OGG/OPUS File] Duration (samples): %u", (unsigned int)duration);
size = op_raw_total(context->of, context->li);
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_INFO,"[OGG/OPUS File] Size (bytes): %u", (unsigned int)size);
}
tags = op_tags(context->of, context->li);
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_INFO, "[OGG/OPUS File] Encoded by: %s\n", tags->vendor);
}
out:
switch_thread_rwlock_unlock(context->rwlock);
return status;
}
static switch_status_t switch_opusfile_close(switch_file_handle_t *handle)
{
opus_file_context *context = handle->private_info;
if (context->of) {
op_free(context->of);
}
#ifdef HAVE_OPUSFILE_ENCODE
if (context->enc) {
ope_encoder_drain(context->enc);
ope_encoder_destroy(context->enc);
}
if (context->comments) {
ope_comments_destroy(context->comments);
}
#endif
if (context->audio_buffer) {
switch_buffer_destroy(&context->audio_buffer);
}
return SWITCH_STATUS_SUCCESS;
}
static switch_status_t switch_opusfile_seek(switch_file_handle_t *handle, unsigned int *cur_sample, int64_t samples, int whence)
{
int ret;
opus_file_context *context = handle->private_info;
if (handle->handler || switch_test_flag(handle, SWITCH_FILE_FLAG_WRITE)) {
return SWITCH_STATUS_FALSE;
} else {
if (whence == SWITCH_SEEK_CUR) {
samples -= switch_buffer_inuse(context->audio_buffer) / sizeof(int16_t);
}
switch_buffer_zero(context->audio_buffer);
ret = op_pcm_seek(context->of, samples);
if (globals.debug) {
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG,"[OGG/OPUS File] seek samples: [%u]", (unsigned int)samples);
}
if (ret == 0) {
handle->pos = *cur_sample = samples;
return SWITCH_STATUS_SUCCESS;
}
}
return SWITCH_STATUS_FALSE;
}
static switch_status_t switch_opusfile_read(switch_file_handle_t *handle, void *data, size_t *len)
{
opus_file_context *context = handle->private_info;
size_t bytes = *len * sizeof(int16_t) * handle->real_channels;
size_t rb = 0, newbytes;
if (!context) {
return SWITCH_STATUS_FALSE;
}
if (!handle->handler) {
if (switch_opusfile_decode(context, data, bytes , handle->real_channels) == SWITCH_STATUS_FALSE) {
context->eof = 1;
}
}
switch_mutex_lock(context->audio_mutex);
rb = switch_buffer_read(context->audio_buffer, data, bytes);
switch_mutex_unlock(context->audio_mutex);
if (!rb && (context->eof)) {
return SWITCH_STATUS_FALSE;
}
if (rb) {
*len = rb / sizeof(int16_t) / handle->real_channels;
if (globals.debug) {
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG, "[OGG/OPUS File] rb: [%d] *len: [%d]\n", (int)rb, (int)*len);
}
} else {
newbytes = (2 * handle->samplerate * handle->real_channels) * context->buffer_seconds;
if (newbytes < bytes) {
bytes = newbytes;
}
if (globals.debug) {
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG, "[OGG/OPUS File] Padding with empty audio. seconds: [%d] bytes: [%d] newbytes: [%d] real_channels: [%d]\n", (int)context->buffer_seconds, (int)bytes, (int)newbytes, (int)handle->real_channels);
}
memset(data, 255, bytes);
*len = bytes / sizeof(int16_t) / handle->real_channels;
}
handle->pos += *len;
handle->sample_count += *len;
return SWITCH_STATUS_SUCCESS;
}
static switch_status_t switch_opusfile_write(switch_file_handle_t *handle, void *data, size_t *len)
{
#ifdef HAVE_OPUSFILE_ENCODE
size_t nsamples = *len;
int err_open;
int ret;
opus_file_context *context = handle->private_info;
if (!handle) {
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "Error no handle\n");
return SWITCH_STATUS_FALSE;
}
if (!(context = handle->private_info)) {
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "Error no context\n");
return SWITCH_STATUS_FALSE;
}
context->comments = ope_comments_create();
ope_comments_add(context->comments, "METADATA", "Freeswitch/mod_opusfile");
if (!context->enc) {
context->enc = ope_encoder_create_file(handle->file_path, context->comments, handle->samplerate, handle->channels, 0, &err_open);
if (!context->enc) {
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "[OGG/OPUS File] Can't open file for writing\n");
return SWITCH_STATUS_FALSE;
}
}
if (globals.debug) {
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG,"[OGG/OPUS File] write nsamples: [%d]", (int)nsamples);
}
ret = ope_encoder_write(context->enc, (opus_int16 *)data, nsamples);
if (ret != OPE_OK) {
return SWITCH_STATUS_FALSE;
}
handle->sample_count += *len;
#endif
return SWITCH_STATUS_SUCCESS;
}
static switch_status_t switch_opusfile_set_string(switch_file_handle_t *handle, switch_audio_col_t col, const char *string)
{
return SWITCH_STATUS_FALSE;
}
static switch_status_t switch_opusfile_get_string(switch_file_handle_t *handle, switch_audio_col_t col, const char **string)
{
return SWITCH_STATUS_FALSE;
}
#define OPUSFILE_DEBUG_SYNTAX "<on|off>"
SWITCH_STANDARD_API(mod_opusfile_debug)
{
if (zstr(cmd)) {
stream->write_function(stream, "-USAGE: %s\n", OPUSFILE_DEBUG_SYNTAX);
} else {
if (!strcasecmp(cmd, "on")) {
globals.debug = 1;
stream->write_function(stream, "OPUSFILE Debug: on\n");
} else if (!strcasecmp(cmd, "off")) {
globals.debug = 0;
stream->write_function(stream, "OPUSFILE Debug: off\n");
} else {
stream->write_function(stream, "-USAGE: %s\n", OPUSFILE_DEBUG_SYNTAX);
}
}
return SWITCH_STATUS_SUCCESS;
}
/* Registration */
static char *supported_formats[SWITCH_MAX_CODECS] = { 0 };
SWITCH_MODULE_LOAD_FUNCTION(mod_opusfile_load)
{
switch_file_interface_t *file_interface;
switch_api_interface_t *commands_api_interface;
supported_formats[0] = "opus";
*module_interface = switch_loadable_module_create_module_interface(pool, modname);
SWITCH_ADD_API(commands_api_interface, "opusfile_debug", "Set OPUSFILE Debug", mod_opusfile_debug, OPUSFILE_DEBUG_SYNTAX);
switch_console_set_complete("add opusfile_debug on");
switch_console_set_complete("add opusfile_debug off");
file_interface = switch_loadable_module_create_interface(*module_interface, SWITCH_FILE_INTERFACE);
file_interface->interface_name = modname;
file_interface->extens = supported_formats;
file_interface->file_open = switch_opusfile_open;
file_interface->file_close = switch_opusfile_close;
file_interface->file_read = switch_opusfile_read;
file_interface->file_write = switch_opusfile_write;
file_interface->file_seek = switch_opusfile_seek;
file_interface->file_set_string = switch_opusfile_set_string;
file_interface->file_get_string = switch_opusfile_get_string;
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_INFO, "mod_opusfile loaded\n");
/* 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:
*/
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