forked from KolibriOS/kolibrios
add new function 'buf2d_filter_dither' from Heavyiron and diamond
git-svn-id: svn://kolibrios.org@3105 a494cfbc-eb01-0410-851d-a64ba20cac60
This commit is contained in:
IgorA
@@ -3451,6 +3451,296 @@ proc buf_curve_bezier, buffer:dword, coord_p0:dword,coord_p1:dword,coord_p2:dwor
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ret
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endp
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;䨫<><E4A8AB><EFBFBD><EFBFBD>
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align 4
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proc buf_filter_dither, buffer:dword, algor:dword
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pushad
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mov edi,[buffer]
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cmp buf2d_bits,24
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jne .error
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mov edx,buf2d_w
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mov esi,buf2d_h
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mov edi,buf2d_data
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;edi - pointer to 24bit bitmap
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;edx - x size
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;esi - y size
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lea edx,[edx*3]
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imul esi,edx
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;<3B><>।<EFBFBD><E0A5A4>塞 <20><><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20>ᯮ<EFBFBD>짮<EFBFBD><ECA7AE><EFBFBD><EFBFBD>
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cmp dword[algor],0
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jne @f
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call dither_0
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jmp .dither_end
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@@:
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cmp dword[algor],1
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jne @f
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call dither_1
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jmp .dither_end
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@@:
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call dither_2
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jmp .dither_end
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.error:
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stdcall print_err,sz_buf2d_filter_dither,txt_err_n24b
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.dither_end:
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popad
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ret
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endp
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align 16
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dither_0: ; Sierra Filter Lite algoritm
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newp_0: ; Dithering cycle
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xor ebx,ebx ; At first threshold
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movzx ecx,byte[edi]
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cmp cl,255
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je newp_0.next
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test cl,cl
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jz newp_0.next
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jns @f
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dec ebx
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sub ecx,255
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@@:
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mov [edi],bl ; putpixel
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sar ecx,1 ; error/2
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;adc ecx,0 ; round to integer
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movzx eax,byte[edi+3] ; pixel (x+1;y)
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add eax,ecx ; add error/2 to (x+1;y)
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jge @f ; check_overflow
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xor eax,eax
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jmp .ok
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@@:
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cmp eax,255
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jle .ok
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or al,255
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.ok:
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mov [edi+3],al ; putpixel
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sar ecx,1 ; error/4
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adc ecx,0 ; round to integer
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movzx eax,byte[edi+edx-3] ; pixel (x-1;y+1)
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add eax,ecx ; add error/4 to (x-1;y+1)
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jge @f ; check_overflow
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xor eax,eax
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jmp .ok1
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@@:
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cmp eax,255
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jle .ok1
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or al,255
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.ok1:
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mov [edi+edx-3],al ; putpixel
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movzx eax,byte[edi+edx] ; pixel (x;y+1)
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add eax,ecx ; add error/4 to (x;y+1)
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jge @f ; check_overflow
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xor eax,eax
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jmp .ok2
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@@:
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cmp eax,255
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jle .ok2
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or al,255
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.ok2:
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mov [edi+edx],al ; putpixel
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.next:
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inc edi
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dec esi
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jnz newp_0
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ret
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align 16
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dither_1: ; Floyd-Steinberg algoritm
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newp_1: ; Dithering cycle
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xor ebx,ebx ; At first threshold
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movzx ecx,byte[edi]
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cmp cl,255
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je newp_1.next
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test cl,cl
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jz newp_1.next
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jns @f
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dec ebx
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sub ecx,255
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@@:
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mov [edi],bl ; putpixel
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sar ecx,4 ; error/16
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adc ecx,0 ; round to integer
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mov ebx,ecx
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movzx eax,byte[edi+edx+3] ; pixel (x+1;y+1)
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add eax,ecx ; add error/16 to (x+1;y+1)
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jge @f ; check_overflow
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xor eax,eax
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jmp .ok
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@@:
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cmp eax,255
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jle .ok
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or al,255
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.ok:
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mov [edi+edx+3],al ;putpixel
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imul ecx,3
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movzx eax,byte[edi+edx-3] ; pixel (x-1;y+1)
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add eax,ecx ; add 3*error/16 to (x-1;y+1)
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jge @f ; check_overflow
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xor eax,eax
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jmp .ok1
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@@:
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cmp eax,255
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jle .ok1
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or al,255
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.ok1:
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mov [edi+edx-3],al ;putpixel
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mov ecx,ebx
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imul ecx,5
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movzx eax,byte[edi+edx] ; pixel (x;y+1)
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add eax,ecx ; add 5*error/16 to (x;y+1)
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jge @f ; check_overflow
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xor eax,eax
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jmp .ok2
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@@:
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cmp eax,255
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jle .ok2
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or al,255
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.ok2:
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mov [edi+edx],al ;putpixel
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mov ecx,ebx
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imul ecx,7
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movzx eax,byte[edi+3] ; pixel (x+1;y)
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add eax,ecx ; add 7*error/16 to (x+1;y)
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jge @f ; check_overflow
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xor eax,eax
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jmp .ok3
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@@:
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cmp eax,255
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jle .ok3
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or al,255
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.ok3:
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mov [edi+3],al ;putpixel
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.next:
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inc edi
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dec esi
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jnz newp_1
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ret
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align 16
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dither_2: ; Burkers algoritm
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newp_2: ; Dithering cycle
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xor ebx,ebx ; At first threshold
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movsx ecx,byte[edi]
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cmp cl,255
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je newp_2.next
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test cl,cl
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jz newp_2.next
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jns @f
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dec ebx
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@@:
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mov [edi],bl ; putpixel
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sar ecx,2 ; error/4
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adc ecx,0 ; round to integer
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movzx eax,byte[edi+3] ; pixel (x+1;y)
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add eax,ecx ; add error/4 to (x+1;y)
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jge @f ; check_overflow
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xor eax,eax
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jmp .ok
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@@:
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cmp eax,255
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jle .ok
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or al,255
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.ok:
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mov [edi+3],al ; putpixel
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movzx eax,byte[edi+edx] ; pixel (x;y+1)
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add eax,ecx ; add error/4 to (x;y+1)
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jge @f ; check_overflow
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xor eax,eax
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jmp .ok1
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@@:
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cmp eax,255
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jle .ok1
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or al,255
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.ok1:
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mov [edi+edx],al ; putpixel
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sar ecx,1 ; error/8
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adc ecx,0 ; round to integer
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movzx eax,byte[edi+6] ; pixel (x+2;y)
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add eax,ecx ; add error/8 to (x+2;y)
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jge @f ; check_overflow
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xor eax,eax
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jmp .ok2
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@@:
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cmp eax,255
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jle .ok2
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or al,255
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.ok2:
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mov [edi+6],al ; putpixel
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movzx eax,byte[edi+edx-3] ; pixel (x-1;y+1)
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add eax,ecx ; add error/8 to (x-1;y+1)
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jge @f ; check_overflow
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xor eax,eax
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jmp .ok3
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@@:
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cmp eax,255
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jle .ok3
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or al,255
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.ok3:
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mov [edi+edx-3],al ; putpixel
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movzx eax,byte[edi+edx+3] ; pixel (x+1;y+1)
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add eax,ecx ; add error/8 to (x+1;y+1)
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jge @f ; check_overflow
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xor eax,eax
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jmp .ok4
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@@:
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cmp eax,255
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jle .ok4
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or al,255
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.ok4:
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mov [edi+edx+3],al ; putpixel
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sar ecx,1 ; error/16
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;adc ecx,0 ; round to integer
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movzx eax,byte[edi+edx-6] ; pixel (x-2;y+1)
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add eax,ecx ; add error/16 to (x-2;y+1)
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jge @f ; check_overflow
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xor eax,eax
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jmp .ok5
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@@:
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cmp eax,255
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jle .ok5
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or al,255
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.ok5:
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mov [edi+edx-6],al ; putpixel
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movzx eax,byte[edi+edx+6] ; pixel (x+2;y+1)
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add eax,ecx ; add error/16 to (x+2;y+1)
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jge @f ; check_overflow
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xor eax,eax
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jmp .ok6
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@@:
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cmp eax,255
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jle .ok6
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or al,255
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.ok6:
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mov [edi+edx+6],al ; putpixel
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.next:
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inc edi
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dec esi
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jnz newp_2
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ret
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;*** <20>㭪樨 <20><><EFBFBD> ࠡ<><E0A0A1><EFBFBD> <20> <20><><EFBFBD>ᥫ쭮<E1A5AB> <20><><EFBFBD>䨪<EFBFBD><E4A8AA> ***
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@@ -4816,6 +5106,7 @@ EXPORTS:
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dd sz_buf2d_set_pixel, buf_set_pixel
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dd sz_buf2d_get_pixel, buf_get_pixel
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dd sz_buf2d_flip_v, buf_flip_v
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dd sz_buf2d_filter_dither, buf_filter_dither
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dd sz_buf2d_vox_brush_create, vox_brush_create
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dd sz_buf2d_vox_brush_delete, vox_brush_delete
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dd sz_buf2d_vox_obj_get_img_w_3g, buf_vox_obj_get_img_w_3g
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@@ -4856,6 +5147,7 @@ EXPORTS:
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sz_buf2d_set_pixel db 'buf2d_set_pixel',0
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sz_buf2d_get_pixel db 'buf2d_get_pixel',0
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sz_buf2d_flip_v db 'buf2d_flip_v',0
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sz_buf2d_filter_dither db 'buf2d_filter_dither',0
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sz_buf2d_vox_brush_create db 'buf2d_vox_brush_create',0
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sz_buf2d_vox_brush_delete db 'buf2d_vox_brush_delete',0
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sz_buf2d_vox_obj_get_img_w_3g db 'buf2d_vox_obj_get_img_w_3g',0
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