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https://github.com/QB64Official/qb64.git
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110 lines
3.6 KiB
C
110 lines
3.6 KiB
C
extern uint32 matchcol(int32 r,int32 g,int32 b);
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#ifndef DEPENDENCY_IMAGE_CODEC
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//Stub(s):
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int32 func__loadimage(qbs *f,int32 bpp,int32 passed);
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#else
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#ifdef QB64_BACKSLASH_FILESYSTEM
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#include "decode\\jpg\\src.c"
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#include "decode\\png\\src.c"
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#include "decode\\bmp\\src.c"
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#include "decode\\other\\src.c" //PNG, TGA, BMP, PSD, GIF, HDR, PIC, PNM(PPM/PGM)
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#else
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#include "decode/jpg/src.c"
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#include "decode/png/src.c"
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#include "decode/bmp/src.c"
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#include "decode/other/src.c" //PNG, TGA, BMP, PSD, GIF, HDR, PIC, PNM(PPM/PGM)
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#endif
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int32 func__loadimage(qbs *f,int32 bpp,int32 passed){
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if (new_error) return 0;
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static int32 isHardware;
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isHardware=0; if (bpp==33){bpp=32; isHardware=1;}
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//validate bpp
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if (passed){
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if ((bpp!=32)&&(bpp!=256)){error(5); return 0;}
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}else{
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if (write_page->text){error(5); return 0;}
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bpp=-1;
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}
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if (!f->len) return -1; //return invalid handle if null length string
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if (bpp==256) return -1; //return invalid handle if 256-color mode requested (not valid in this version)
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//load the file
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int32 fh,result = 0;
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int64 lof;
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fh=gfs_open(f,1,0,0);
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if (fh<0) return -1;
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lof=gfs_lof(fh);
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static uint8* content;
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content=(uint8*)malloc(lof); if (!content){gfs_close(fh); return -1;}
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result=gfs_read(fh,-1,content,lof);
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gfs_close(fh);
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if (result<0){free(content); return -1;}
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//Identify format:
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static int32 format;
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format=0;
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//'.png'
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if (lof>=8){
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if ((content[0]==0x89)&&(content[1]==0x50)&&(content[2]==0x4E)&&(content[3]==0x47)&&
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(content[4]==0x0D)&&(content[5]==0x0A)&&(content[6]==0x1A)&&(content[7]==0x0A))
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{format=2; goto got_format;}//PNG
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}//8
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//'.bmp'
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if (lof>=6){
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if ((content[0]==0x42)&&(content[1]==0x4D)){
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if ( (*((int32*)(&content[2]))) == lof ){//length of file
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format=3; goto got_format;
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}
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}//BMP
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}//6
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//'.jpg' The first two bytes of every JPEG stream are the Start Of Image (SOI) marker values FFh D8h
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if (lof>=2){
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if ((content[0]==0xFF)&&(content[1]==0xD8)){format=1; goto got_format;}//JP[E]G
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}//2
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got_format:
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static uint8 *pixels;
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static int32 x,y;
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if (format==1) pixels=image_decode_jpg(content,lof,&result,&x,&y);
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if (format==2) pixels=image_decode_png(content,lof,&result,&x,&y);
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if (format==3) pixels=image_decode_bmp(content,lof,&result,&x,&y);
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if (!(result & 1)) {
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pixels=image_decode_other(content,lof,&result,&x,&y);
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}
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free(content);
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if (!(result&1)) return -1;
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//...
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static int32 i;
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static int32 prevDest;
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static uint16 scanX, scanY;
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static uint8 red, green, blue;
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i=func__newimage(x,y,32,1);
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if (i==-1){free(pixels); return -1;}
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memcpy(img[-i].offset,pixels,x*y*4);
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free(pixels);
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if (isHardware){
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static int32 iHardware;
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iHardware=func__copyimage(i,33,1);
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sub__freeimage(i,1);
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i=iHardware;
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}
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return i;
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}
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#endif
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