mirror of
https://github.com/NekoX-Dev/NekoX.git
synced 2024-12-14 09:29:38 +01:00
127 lines
3.8 KiB
C
127 lines
3.8 KiB
C
/*
|
|
* Copyright (C)2011 D. R. Commander. All Rights Reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions are met:
|
|
*
|
|
* - Redistributions of source code must retain the above copyright notice,
|
|
* this list of conditions and the following disclaimer.
|
|
* - Redistributions in binary form must reproduce the above copyright notice,
|
|
* this list of conditions and the following disclaimer in the documentation
|
|
* and/or other materials provided with the distribution.
|
|
* - Neither the name of the libjpeg-turbo Project nor the names of its
|
|
* contributors may be used to endorse or promote products derived from this
|
|
* software without specific prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS",
|
|
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDERS OR CONTRIBUTORS BE
|
|
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
|
|
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
|
|
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
|
|
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
|
|
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
|
|
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
|
|
* POSSIBILITY OF SUCH DAMAGE.
|
|
*/
|
|
|
|
/* This program demonstrates how to check for the colorspace extension
|
|
capabilities of libjpeg-turbo at both compile time and run time. */
|
|
|
|
#include <stdio.h>
|
|
#include <jpeglib.h>
|
|
#include <jerror.h>
|
|
#include <setjmp.h>
|
|
|
|
#ifndef JCS_EXTENSIONS
|
|
#define JCS_EXT_RGB 6
|
|
#endif
|
|
#if !defined(JCS_EXTENSIONS) || !defined(JCS_ALPHA_EXTENSIONS)
|
|
#define JCS_EXT_RGBA 12
|
|
#endif
|
|
|
|
static char lasterror[JMSG_LENGTH_MAX] = "No error";
|
|
|
|
typedef struct _error_mgr {
|
|
struct jpeg_error_mgr pub;
|
|
jmp_buf jb;
|
|
} error_mgr;
|
|
|
|
static void my_error_exit(j_common_ptr cinfo)
|
|
{
|
|
error_mgr *myerr = (error_mgr *)cinfo->err;
|
|
(*cinfo->err->output_message) (cinfo);
|
|
longjmp(myerr->jb, 1);
|
|
}
|
|
|
|
static void my_output_message(j_common_ptr cinfo)
|
|
{
|
|
(*cinfo->err->format_message) (cinfo, lasterror);
|
|
}
|
|
|
|
int main(void)
|
|
{
|
|
int jcs_valid = -1, jcs_alpha_valid = -1;
|
|
struct jpeg_compress_struct cinfo;
|
|
error_mgr jerr;
|
|
|
|
printf("libjpeg-turbo colorspace extensions:\n");
|
|
#if JCS_EXTENSIONS
|
|
printf(" Present at compile time\n");
|
|
#else
|
|
printf(" Not present at compile time\n");
|
|
#endif
|
|
|
|
cinfo.err = jpeg_std_error(&jerr.pub);
|
|
jerr.pub.error_exit = my_error_exit;
|
|
jerr.pub.output_message = my_output_message;
|
|
|
|
if (setjmp(jerr.jb)) {
|
|
/* this will execute if libjpeg has an error */
|
|
jcs_valid = 0;
|
|
goto done;
|
|
}
|
|
|
|
jpeg_create_compress(&cinfo);
|
|
cinfo.input_components = 3;
|
|
jpeg_set_defaults(&cinfo);
|
|
cinfo.in_color_space = JCS_EXT_RGB;
|
|
jpeg_default_colorspace(&cinfo);
|
|
jcs_valid = 1;
|
|
|
|
done:
|
|
if (jcs_valid)
|
|
printf(" Working properly\n");
|
|
else
|
|
printf(" Not working properly. Error returned was:\n %s\n",
|
|
lasterror);
|
|
|
|
printf("libjpeg-turbo alpha colorspace extensions:\n");
|
|
#if JCS_ALPHA_EXTENSIONS
|
|
printf(" Present at compile time\n");
|
|
#else
|
|
printf(" Not present at compile time\n");
|
|
#endif
|
|
|
|
if (setjmp(jerr.jb)) {
|
|
/* this will execute if libjpeg has an error */
|
|
jcs_alpha_valid = 0;
|
|
goto done2;
|
|
}
|
|
|
|
cinfo.in_color_space = JCS_EXT_RGBA;
|
|
jpeg_default_colorspace(&cinfo);
|
|
jcs_alpha_valid = 1;
|
|
|
|
done2:
|
|
if (jcs_alpha_valid)
|
|
printf(" Working properly\n");
|
|
else
|
|
printf(" Not working properly. Error returned was:\n %s\n",
|
|
lasterror);
|
|
|
|
jpeg_destroy_compress(&cinfo);
|
|
return 0;
|
|
}
|