--- /dev/null
+#include "stdafx.h"
+#include <windows.h>
+#include <stdio.h>
+#include <setjmp.h>
+#include "jpeglib.h"
+#include "LoadJPEG.h"
+
+namespace FDK {
+ namespace Graphics {
+
+// \93Æ\8e©\82Ì\83G\83\89\81[\83n\83\93\83h\83\8a\83\93\83O\82ð\8ds\82¤\8fê\8d\87\8eg\97p
+struct my_error_mgr {
+ struct jpeg_error_mgr pub; /* "public" fields */
+
+ // \93Æ\8e©\82Ì\8ag\92£\95\94\95ª
+ jmp_buf setjmp_buffer; /* for return to caller */
+};
+
+typedef struct my_error_mgr * my_error_ptr;
+
+METHODDEF(void)
+my_error_exit (j_common_ptr cinfo)
+{
+ my_error_ptr myerr = (my_error_ptr) cinfo->err;
+
+ (*cinfo->err->output_message) (cinfo);
+
+ // setjmp \82Ö\96ß\82é
+ longjmp(myerr->setjmp_buffer, 1);
+}
+
+int LoadJPEG( FILE* fp, BITMAPINFO** lppInfo, BYTE** lppBMP )
+{
+ BITMAPINFO* lpInfo = *lppInfo = NULL;
+ BYTE* lpBMP = *lppBMP = NULL;
+
+ // jpeg \83\89\83C\83u\83\89\83\8a\82Å\82Í\8e\9f\82Ì\82Q\82Â\82Ì\8d\\91¢\91Ì\82ª\8eg\82í\82ê\82é
+ struct jpeg_decompress_struct cinfo;
+ struct my_error_mgr jerr;
+
+ JSAMPARRAY buffer; /* \8ds\8fo\97Í\83o\83b\83t\83@ */
+ int row_stride; /* \8fo\97Í\83o\83b\83t\83@\82Ì\95¨\97\9d\8ds\95\9d(bytes) */
+ int image_width;
+ int image_height;
+ int image_bpp;
+ int image_num_palette;
+ RGBQUAD* image_palette;
+ UCHAR* bmp_image;
+ int bmp_row;
+ int bmp_row_bytes;
+ int bmp_image_size;
+
+ // \83G\83\89\81[\82Ì\83n\83\93\83h\83\8a\83\93\83O
+ cinfo.err = jpeg_std_error(&jerr.pub);
+ jerr.pub.error_exit = my_error_exit;
+
+ // \88È\8d~\82Ì jpeg \83\89\83C\83u\83\89\83\8a\93à\82Å\83G\83\89\81[\82ª\90¶\82¶\82½\8fê\8d\87\81A\8e\91\8c¹\82ð\8aJ\95ú\82µ\82Ä\8fI\82í\82é\81B
+ if (setjmp(jerr.setjmp_buffer)) {
+ jpeg_destroy_decompress(&cinfo);
+ if( lpInfo ) free( lpInfo );
+ if( lpBMP ) free( lpBMP );
+ return 0;
+ }
+
+ // \89ð\93\80\8aJ\8en
+ jpeg_create_decompress( &cinfo ); // \8d\\91¢\91Ì\82Ì\8f\89\8aú\90Ý\92è
+ jpeg_stdio_src( &cinfo, fp ); // \83t\83@\83C\83\8b\93ü\97Í\83n\83\93\83h\83\8b\82Ì\90Ý\92è
+ jpeg_read_header( &cinfo, true ); // \83t\83@\83C\83\8b\82Ì\8fî\95ñ\83w\83b\83_\82Ì\93Ç\8d\9e\82Ý
+ jpeg_start_decompress( &cinfo ); // \89ð\93\80\82Ì\8aJ\8en
+
+ // DIB \82Ì\83C\83\81\81[\83W\8fî\95ñ\8eæ\93¾\81i\8f\89\8aú\89»\81j
+ image_width = cinfo.image_width;
+ image_height = cinfo.image_height;
+ image_bpp = 0;
+ image_num_palette = 0;
+ image_palette = NULL;
+
+ // bpp \82Æ\83p\83\8c\83b\83g\82Ì\8eæ\93¾
+ switch( cinfo.out_color_space )
+ {
+ case JCS_GRAYSCALE:
+ if( cinfo.num_components == 1 )
+ {
+ image_bpp = 8;
+ image_num_palette = 256;
+ image_palette = (RGBQUAD *) malloc( sizeof(RGBQUAD) * 256 );
+ for( int x = 0; x < 256; x++ )
+ {
+ image_palette[x].rgbBlue = image_palette[x].rgbGreen = image_palette[x].rgbRed = x;
+ image_palette[x].rgbReserved = 0;
+ }
+ }
+ break;
+
+ case JCS_RGB:
+ if( cinfo.num_components == 3 )
+ image_bpp = 24;
+ break;
+
+ case JCS_CMYK:
+ if( cinfo.num_components == 4 )
+ image_bpp = 24; // \82P\90F\82S\83o\83C\83g\82Å\82à 24bpp \82Æ\82·\82é
+ break;
+ }
+
+ // bpp == 0 \82È\82ç\96¢\91Î\89\9e\83t\83H\81[\83}\83b\83g\82Æ\82Ý\82È\82µ\82Ä\8bA\8aÒ
+ if( image_bpp == 0 )
+ {
+ jpeg_destroy_decompress( &cinfo );
+ return 0;
+ }
+
+ // \8ds\83o\83b\83t\83@\82Ì\97Ì\88æ\90Ý\92è
+ row_stride = cinfo.output_width * cinfo.output_components;
+ buffer = (*cinfo.mem->alloc_sarray) ((j_common_ptr) &cinfo, JPOOL_IMAGE, row_stride, 1);
+ if( !buffer ) goto SKIP1;
+
+ // BMP \91¤\83f\81[\83^\97Ì\88æ\82Ì\8f\80\94õ
+ if( lpBMP ) { free( lpBMP ); lpBMP = NULL; }
+ bmp_row_bytes = ( ( image_width * (image_bpp / 8) + 3 ) / 4 ) * 4; // DIB \82Ì\8ds\82Í DWORD \8b«\8aE\82Å\8fI\82í\82é\95K\97v\82ª\82 \82é
+ bmp_image_size = bmp_row_bytes * image_height;
+ bmp_image = (UCHAR*) lpBMP = (BYTE*) malloc( bmp_image_size );
+
+ // \82P\8ds\82¸\82Â\93Ç\82Ý\81A\83o\83b\83t\83@\82Ö\8ai\94[\82·\82é
+ bmp_row = image_height - 1;
+ while( cinfo.output_scanline < cinfo.output_height )
+ {
+ int i;
+ UCHAR *src, *dest;
+
+ jpeg_read_scanlines( &cinfo, buffer, 1 );
+
+ src = buffer[ 0 ];
+ dest = &bmp_image[ bmp_row_bytes * bmp_row-- ];
+
+ switch( cinfo.out_color_space )
+ {
+ case JCS_GRAYSCALE:
+ memcpy( dest, src, cinfo.output_width );
+ break;
+
+ case JCS_RGB:
+ for( i = 0; i < row_stride; i += 3 )
+ {
+ *dest++ = src[ i+2 ];
+ *dest++ = src[ i+1 ];
+ *dest++ = src[ i+0 ];
+ }
+ for( i = 0; i < bmp_row_bytes - row_stride; i++ ) // DWORD \8b«\8aE\95â\90³(0\82Å\96\84\82ß\82é)
+ *dest++ = 0;
+ break;
+
+ case JCS_CMYK:
+ for( i = 0; i < row_stride; i += 4 )
+ {
+ *dest++ = ( src[ i+2 ] * src[ i+3 ] ) / 255;
+ *dest++ = ( src[ i+1 ] * src[ i+3 ] ) / 255;
+ *dest++ = ( src[ i+0 ] * src[ i+3 ] ) / 255;
+ }
+ for( i = 0; i < bmp_row_bytes - row_stride; i++ ) // DWORD \8b«\8aE\95â\90³(0\82Å\96\84\82ß\82é)
+ *dest++ = 0;
+ break;
+ }
+ }
+
+SKIP1:;
+ // \89ð\93\80\8fI\97¹
+ jpeg_finish_decompress( &cinfo );
+ jpeg_destroy_decompress( &cinfo );
+
+ // BITMAP \8dì\90¬
+ if( lpInfo ) { free( lpInfo ); lpInfo = NULL; }
+ lpInfo = (BITMAPINFO*) malloc( sizeof( BITMAPINFOHEADER ) + (sizeof(RGBQUAD) * image_num_palette) );
+ memset( &(lpInfo->bmiHeader), 0, sizeof( BITMAPINFOHEADER ) + (sizeof(RGBQUAD) * image_num_palette) );
+ lpInfo->bmiHeader.biSize = sizeof( BITMAPINFOHEADER );
+ lpInfo->bmiHeader.biWidth = image_width;
+ lpInfo->bmiHeader.biHeight = image_height;
+ lpInfo->bmiHeader.biPlanes = 1;
+ lpInfo->bmiHeader.biBitCount = image_bpp;
+ lpInfo->bmiHeader.biClrUsed = image_num_palette;
+ lpInfo->bmiHeader.biSizeImage = bmp_image_size;
+ if( image_num_palette > 0 )
+ {
+ // \83p\83\8c\83b\83g\82ª\82 \82é\82Ì\82Í 256\8aK\92²\83O\83\8c\81[\83X\83P\81[\83\8b\82¾\82¯\81i\82Æ\8c\88\82ß\95t\82¯\82é\81j
+ for( int i = 0; i < 256; i++ )
+ {
+ lpInfo->bmiColors[i].rgbBlue = lpInfo->bmiColors[i].rgbGreen = lpInfo->bmiColors[i].rgbRed = i;
+ lpInfo->bmiColors[i].rgbReserved = 0;
+ }
+ }
+
+ if( image_palette ) { free( image_palette ); image_palette = NULL; }
+ *lppInfo = lpInfo;
+ *lppBMP = lpBMP;
+ return 1;
+}
+ }//Graphics
+}//FDK
\ No newline at end of file
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