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60 lines
1.1 KiB
C
60 lines
1.1 KiB
C
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#ifdef QB64_BACKSLASH_FILESYSTEM
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#include "src\\nanojpeg.c"
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#else
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#include "src/nanojpeg.c"
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#endif
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uint8 *image_decode_jpg(uint8 *content,int32 bytes,int32 *result,int32 *x,int32 *y){
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//Result:bit 1=Success,bit 2=32bit[BGRA]
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*result=0;
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static int32 init=0;
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if (!init){init=1; njInit();}
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if (njDecode(content,bytes)) return NULL;
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static uint8 *si;
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si=(uint8*)njGetImage();
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static int32 w,h;
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w=njGetWidth();
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h=njGetHeight();
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static uint8 *di;
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if (njIsColor){//RGB
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//Create a buffer large enough to store image
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if (w*h*3!=njGetImageSize()) return NULL;
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di=(uint8*)malloc(w*h*4);
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//RGB->BGRA
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static int32 c;
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c=w*h;
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while(c--){
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di[c*4+2]=si[c*3 ];//red
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di[c*4+1]=si[c*3+1];//green
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di[c*4 ]=si[c*3+2];//blue
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di[c*4+3]=255; //alpha
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}
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}else{//Greyscale
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//Create a buffer large enough to store image
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if (w*h!=njGetImageSize()) return NULL;
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di=(uint8*)malloc(w*h*4);
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//Greyscale->BGRA
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static int32 c;
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c=w*h;
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while(c--){
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di[c*4+2]=si[c];//red
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di[c*4+1]=si[c];//green
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di[c*4 ]=si[c];//blue
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di[c*4+3]=255; //alpha
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}
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}
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*result=1+2;
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*x=w;
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*y=h;
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return di;
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}
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