WebSVN – Kolibri OS – Diff – /programs/develop/libraries/libs-dev/libimg/png/libpng/pngwutil.asm



	cmp dword[owner],png_IDAT
	jne .end1 ;if (..==..)
		mov eax,[edi+png_struct.flags]
		and eax,PNG_FLAG_ZLIB_CUSTOM_STRATEGY
 
		jz @f ;if (..!=0)
			mov eax,[edi+png_struct.zlib_strategy]
			mov dword[strategy],eax
			jmp .end2
		@@:
		cmp byte[edi+png_struct.do_filter],PNG_FILTER_NONE

 

	; Check against the previous initialized values, if any.
	mov eax,[edi+png_struct.flags]
	and eax,PNG_FLAG_ZSTREAM_INITIALIZED
 
	jz .end4
	mov eax,[level]
	cmp [edi+png_struct.zlib_set_level],eax
	jne @f
	mov eax,[method]
	cmp [edi+png_struct.zlib_set_method],eax

	mov ecx,edi
	add ecx,png_struct.zstream
	mov eax,[edi+png_struct.flags]
	and eax,PNG_FLAG_ZSTREAM_INITIALIZED
 
	jz @f ;if (..!=0)
		stdcall [deflateReset], ecx
		jmp .end5
	@@: ;else
		stdcall [deflateInit2], ecx, [level], [method], [windowBits],\
			[memLevel], [strategy]

	cmp [num_pal],eax
	jg @f
	mov eax,[edi+png_struct.mng_features_permitted]
	and eax,PNG_FLAG_MNG_EMPTY_PLTE
	jnz .end1
 
	cmp [num_pal],0
	jne .end1
	@@:
end if
 

	.end1:
 

	movzx eax,byte[edi+png_struct.color_type]
	and eax,PNG_COLOR_MASK_COLOR
 
	jnz @f ;if (..==0)
		png_warning edi, 'Ignoring request to write a PLTE chunk in grayscale PNG'
		jmp .end_f
	@@:

 

 

if PNG_WRITE_OPTIMIZE_CMF_SUPPORTED eq 1
			mov eax,[edi+png_struct.mode]
			and eax,PNG_HAVE_IDAT
 
			jnz @f
			cmp byte[edi+png_struct.compression_type],PNG_COMPRESSION_TYPE_BASE
			jne @f ;if (..==0 && ..==..)
				stdcall png_image_size, edi
				stdcall optimize_cmf, edx, eax
			@@:

 

			mov edx,[edi+png_struct.zbuffer_list]
			add edx,png_compression_buffer.output
			mov ecx,[edi+png_struct.zbuffer_size]
			movzx eax,word[edi+png_struct.zstream.avail_out]
			sub ecx,eax
			;edx = data
			;ecx = size

 
if PNG_WRITE_OPTIMIZE_CMF_SUPPORTED eq 1
			mov eax,[edi+png_struct.mode]
 
			and eax,PNG_HAVE_IDAT
			jnz @f
			cmp byte[edi+png_struct.compression_type],PNG_COMPRESSION_TYPE_BASE
			jne @f ;if (..==0 && ..==..)
				stdcall png_image_size, edi
				stdcall optimize_cmf, edx, eax

	cmp byte[edi+png_struct.interlaced],0
	je @f
	mov eax,[edi+png_struct.transformations]
	and eax,PNG_INTERLACE
	jnz @f ;if(..!=0 && ..==0)
 
		movzx ecx,byte[png_pass_yinc]
		mov eax,[edi+png_struct.height]
		add eax,ecx
		dec eax
		movzx edx,byte[png_pass_ystart]
		sub eax,edx

	je .end0 ;if (..!=0)
		mov dword[edi+png_struct.row_number],0
		mov eax,[edi+png_struct.transformations]
		and eax,PNG_INTERLACE
		jz @f ;if (..!=0)
 
			inc byte[edi+png_struct.pass]
			jmp .end1
		@@: ;else
			; Loop until we find a non-zero width or height pass
			.cycle0: ;do
				inc byte[edi+png_struct.pass]

				mov [edi+png_struct.num_rows],eax
 

				mov eax,[edi+png_struct.transformations]
				and eax,PNG_INTERLACE
 
				jnz .cycle0end ;if(..!=0) break

 
				cmp dword[edi+png_struct.usr_width],0
				je .cycle0
				cmp dword[edi+png_struct.num_rows],0

		mov ah,byte[ebx]
		shr ah,1
		sub al,ah
		stosb
		png_setup_abs dword[sum]
		inc ebx
		loop .cycle0
 

	mov ecx,[row_bytes]
	sub ecx,[bpp]

		shr ax,1
		rol eax,8
		sub al,ah
		stosb
		png_setup_abs dword[sum]
		mov eax,[sum]
		cmp eax,[lmins]
		jg .cycle1end ;if (..>..) ;We are already worse, don't continue.
		inc ebx
		inc edx
		loop .cycle1

		jmp .end0
	@@:
	mov eax,[filter_to_do]
	and eax,PNG_FILTER_NONE
	jz .end0
 
	cmp dword[filter_to_do],PNG_FILTER_NONE
	je .end0 ;else if (..!=0 && ..!=..)
		; Overflow not possible and multiple filters in the list, including the
		; 'none' filter.
 

		mov [best_row],eax
		jmp .end1
	@@:
	and eax,PNG_FILTER_SUB
	jz .end1 ;else if (..!=0)
 
		stdcall png_setup_sub_row, edi, [bpp], [row_bytes], [mins]
		cmp eax,[mins]
		jge .end1 ;if (..<..)
			mov [mins],eax
			mov eax,[edi+png_struct.try_row]
			mov [best_row],eax

		mov [best_row],eax
		jmp .end2
	@@:
	and eax,PNG_FILTER_UP
	jz .end2 ;else if (..!=0)
 
		stdcall png_setup_up_row, edi, [row_bytes], [mins]
		cmp eax,[mins]
		jge .end2 ;if (..<..)
			mov [mins],eax
			mov eax,[edi+png_struct.try_row]
			mov [best_row],eax

		mov [best_row],eax
		jmp .end3
	@@:
	and eax,PNG_FILTER_AVG
	jz .end3 ;else if (..!=0)
 
		stdcall png_setup_avg_row, edi, [bpp], [row_bytes], [mins]
		cmp eax,[mins]
		jge .end3 ;if (..<..)
			mov [mins],eax
			mov eax,[edi+png_struct.try_row]
			mov [best_row],eax

		mov [best_row],eax
		jmp .end4
	@@:
	and eax,PNG_FILTER_PAETH
	jz .end4 ;else if (..!=0)
 
		stdcall png_setup_paeth_row, edi, [bpp], [row_bytes], [mins]
		cmp eax,[mins]
		jge .end4 ;if (..<..)
			mov [mins],eax
			mov eax,[edi+png_struct.try_row]
			mov [best_row],eax

Rev 6779	Rev 6780
Line 408...	Line 408...
408	cmp dword[owner],png_IDAT	408	cmp dword[owner],png_IDAT
409	jne .end1 ;if (..==..)	409	jne .end1 ;if (..==..)
410	mov eax,[edi+png_struct.flags]	410	mov eax,[edi+png_struct.flags]
411	and eax,PNG_FLAG_ZLIB_CUSTOM_STRATEGY	411	and eax,PNG_FLAG_ZLIB_CUSTOM_STRATEGY
412	cmp eax,0	-
413	je @f ;if (..!=0)	412	jz @f ;if (..!=0)
414	mov eax,[edi+png_struct.zlib_strategy]	413	mov eax,[edi+png_struct.zlib_strategy]
415	mov dword[strategy],eax	414	mov dword[strategy],eax
416	jmp .end2	415	jmp .end2
417	@@:	416	@@:
418	cmp byte[edi+png_struct.do_filter],PNG_FILTER_NONE	417	cmp byte[edi+png_struct.do_filter],PNG_FILTER_NONE
Line 475...	Line 474...
475		474
Line 476...	Line 475...
476	; Check against the previous initialized values, if any.	475	; Check against the previous initialized values, if any.
477	mov eax,[edi+png_struct.flags]	476	mov eax,[edi+png_struct.flags]
478	and eax,PNG_FLAG_ZSTREAM_INITIALIZED	477	and eax,PNG_FLAG_ZSTREAM_INITIALIZED
479	cmp eax,0	-
480	je .end4	478	jz .end4
481	mov eax,[level]	479	mov eax,[level]
482	cmp [edi+png_struct.zlib_set_level],eax	480	cmp [edi+png_struct.zlib_set_level],eax
483	jne @f	481	jne @f
484	mov eax,[method]	482	mov eax,[method]
485	cmp [edi+png_struct.zlib_set_method],eax	483	cmp [edi+png_struct.zlib_set_method],eax
Line 518...	Line 516...
518	mov ecx,edi	516	mov ecx,edi
519	add ecx,png_struct.zstream	517	add ecx,png_struct.zstream
520	mov eax,[edi+png_struct.flags]	518	mov eax,[edi+png_struct.flags]
521	and eax,PNG_FLAG_ZSTREAM_INITIALIZED	519	and eax,PNG_FLAG_ZSTREAM_INITIALIZED
522	cmp eax,0	-
523	je @f ;if (..!=0)	520	jz @f ;if (..!=0)
524	stdcall [deflateReset], ecx	521	stdcall [deflateReset], ecx
525	jmp .end5	522	jmp .end5
526	@@: ;else	523	@@: ;else
527	stdcall [deflateInit2], ecx, [level], [method], [windowBits],\	524	stdcall [deflateInit2], ecx, [level], [method], [windowBits],\
528	[memLevel], [strategy]	525	[memLevel], [strategy]
Line 1098...	Line 1095...
1098	cmp [num_pal],eax	1095	cmp [num_pal],eax
1099	jg @f	1096	jg @f
1100	mov eax,[edi+png_struct.mng_features_permitted]	1097	mov eax,[edi+png_struct.mng_features_permitted]
1101	and eax,PNG_FLAG_MNG_EMPTY_PLTE	1098	and eax,PNG_FLAG_MNG_EMPTY_PLTE
1102	cmp eax,0	1099	jnz .end1
1103	jne .end1	-
1104	cmp [num_pal],0	1100	cmp [num_pal],0
1105	jne .end1	1101	jne .end1
1106	@@:	1102	@@:
1107	end if	1103	end if
1108		1104
Line 1116...	Line 1112...
1116	.end1:	1112	.end1:
1117		1113
Line 1118...	Line 1114...
1118	movzx eax,byte[edi+png_struct.color_type]	1114	movzx eax,byte[edi+png_struct.color_type]
1119	and eax,PNG_COLOR_MASK_COLOR	1115	and eax,PNG_COLOR_MASK_COLOR
1120	cmp eax,0	-
1121	jne @f ;if (..==0)	1116	jnz @f ;if (..==0)
1122	png_warning edi, 'Ignoring request to write a PLTE chunk in grayscale PNG'	1117	png_warning edi, 'Ignoring request to write a PLTE chunk in grayscale PNG'
1123	jmp .end_f	1118	jmp .end_f
1124	@@:	1119	@@:
Line 1125...	Line 1120...
1125		1120
Line 1274...	Line 1269...
1274		1269
Line 1275...	Line 1270...
1275	if PNG_WRITE_OPTIMIZE_CMF_SUPPORTED eq 1	1270	if PNG_WRITE_OPTIMIZE_CMF_SUPPORTED eq 1
1276	mov eax,[edi+png_struct.mode]	1271	mov eax,[edi+png_struct.mode]
1277	and eax,PNG_HAVE_IDAT	1272	and eax,PNG_HAVE_IDAT
1278	cmp eax,0	-
1279	jne @f	1273	jnz @f
1280	cmp byte[edi+png_struct.compression_type],PNG_COMPRESSION_TYPE_BASE	1274	cmp byte[edi+png_struct.compression_type],PNG_COMPRESSION_TYPE_BASE
1281	jne @f ;if (..==0 && ..==..)	1275	jne @f ;if (..==0 && ..==..)
1282	stdcall png_image_size, edi	1276	stdcall png_image_size, edi
1283	stdcall optimize_cmf, edx, eax	1277	stdcall optimize_cmf, edx, eax
1284	@@:	1278	@@:
Line 1325...	Line 1319...
1325		1319
Line 1326...	Line 1320...
1326	mov edx,[edi+png_struct.zbuffer_list]	1320	mov edx,[edi+png_struct.zbuffer_list]
1327	add edx,png_compression_buffer.output	1321	add edx,png_compression_buffer.output
1328	mov ecx,[edi+png_struct.zbuffer_size]	1322	mov ecx,[edi+png_struct.zbuffer_size]
1329	sub cx,[edi+png_struct.zstream.avail_out]	1323	movzx eax,word[edi+png_struct.zstream.avail_out]
-		1324	sub ecx,eax
1330	;edx = data	1325	;edx = data
1331	;ecx = size	1326	;ecx = size
Line 1332...	Line 1327...
1332		1327
1333	if PNG_WRITE_OPTIMIZE_CMF_SUPPORTED eq 1	1328	if PNG_WRITE_OPTIMIZE_CMF_SUPPORTED eq 1
1334	mov eax,[edi+png_struct.mode]	1329	mov eax,[edi+png_struct.mode]
1335	and eax,PNG_HAVE_IDAT	-
1336	cmp eax,0	1330	and eax,PNG_HAVE_IDAT
1337	jne @f	1331	jnz @f
1338	cmp byte[edi+png_struct.compression_type],PNG_COMPRESSION_TYPE_BASE	1332	cmp byte[edi+png_struct.compression_type],PNG_COMPRESSION_TYPE_BASE
1339	jne @f ;if (..==0 && ..==..)	1333	jne @f ;if (..==0 && ..==..)
1340	stdcall png_image_size, edi	1334	stdcall png_image_size, edi
1341	stdcall optimize_cmf, edx, eax	1335	stdcall optimize_cmf, edx, eax
Line 2421...	Line 2415...
2421	cmp byte[edi+png_struct.interlaced],0	2415	cmp byte[edi+png_struct.interlaced],0
2422	je @f	2416	je @f
2423	mov eax,[edi+png_struct.transformations]	2417	mov eax,[edi+png_struct.transformations]
2424	and eax,PNG_INTERLACE	2418	and eax,PNG_INTERLACE
2425	cmp eax,0	2419	jnz @f ;if(..!=0 && ..==0)
2426	jne @f ;if(..!=0 && ..==0)	-
2427	movzx ecx,byte[png_pass_yinc]	2420	movzx ecx,byte[png_pass_yinc]
2428	mov eax,[edi+png_struct.height]	2421	mov eax,[edi+png_struct.height]
2429	add eax,ecx	2422	add eax,ecx
2430	dec eax	2423	dec eax
2431	movzx edx,byte[png_pass_ystart]	2424	movzx edx,byte[png_pass_ystart]
2432	sub eax,edx	2425	sub eax,edx
Line 2477...	Line 2470...
2477	je .end0 ;if (..!=0)	2470	je .end0 ;if (..!=0)
2478	mov dword[edi+png_struct.row_number],0	2471	mov dword[edi+png_struct.row_number],0
2479	mov eax,[edi+png_struct.transformations]	2472	mov eax,[edi+png_struct.transformations]
2480	and eax,PNG_INTERLACE	2473	and eax,PNG_INTERLACE
2481	cmp eax,0	2474	jz @f ;if (..!=0)
2482	je @f ;if (..!=0)	-
2483	inc byte[edi+png_struct.pass]	2475	inc byte[edi+png_struct.pass]
2484	jmp .end1	2476	jmp .end1
2485	@@: ;else	2477	@@: ;else
2486	; Loop until we find a non-zero width or height pass	2478	; Loop until we find a non-zero width or height pass
2487	.cycle0: ;do	2479	.cycle0: ;do
2488	inc byte[edi+png_struct.pass]	2480	inc byte[edi+png_struct.pass]
Line 2518...	Line 2510...
2518	mov [edi+png_struct.num_rows],eax	2510	mov [edi+png_struct.num_rows],eax
2519		2511
Line 2520...	Line 2512...
2520	mov eax,[edi+png_struct.transformations]	2512	mov eax,[edi+png_struct.transformations]
2521	and eax,PNG_INTERLACE	2513	and eax,PNG_INTERLACE
2522	cmp eax,0	-
2523	jne .cycle0end ;if(..!=0) break	2514	jnz .cycle0end ;if(..!=0) break
Line 2524...	Line 2515...
2524		2515
2525	cmp dword[edi+png_struct.usr_width],0	2516	cmp dword[edi+png_struct.usr_width],0
2526	je .cycle0	2517	je .cycle0
2527	cmp dword[edi+png_struct.num_rows],0	2518	cmp dword[edi+png_struct.num_rows],0
Line 2874...	Line 2865...
2874	mov ah,byte[ebx]	2865	mov ah,byte[ebx]
2875	shr ah,1	2866	shr ah,1
2876	sub al,ah	2867	sub al,ah
2877	stosb	2868	stosb
2878	png_setup_abs [sum]	2869	png_setup_abs dword[sum]
2879	inc ebx	2870	inc ebx
2880	loop .cycle0	2871	loop .cycle0
2881		2872
Line 2882...	Line 2873...
2882	mov ecx,[row_bytes]	2873	mov ecx,[row_bytes]
2883	sub ecx,[bpp]	2874	sub ecx,[bpp]
Line 2895...	Line 2886...
2895	shr ax,1	2886	shr ax,1
2896	rol eax,8	2887	rol eax,8
2897	sub al,ah	2888	sub al,ah
2898	stosb	2889	stosb
2899	png_setup_abs [sum]	2890	png_setup_abs dword[sum]
2900	mov eax,[sum]	2891	mov eax,[sum]
2901	cmp eax,[lmins]	2892	cmp eax,[lmins]
2902	jg .cycle1end ;if (..>..) ;We are already worse, don't continue.	2893	jg .cycle1end ;if (..>..) ;We are already worse, don't continue.
2903	inc ebx	2894	inc ebx
2904	inc edx	2895	inc edx
2905	loop .cycle1	2896	loop .cycle1
Line 3138...	Line 3129...
3138	jmp .end0	3129	jmp .end0
3139	@@:	3130	@@:
3140	mov eax,[filter_to_do]	3131	mov eax,[filter_to_do]
3141	and eax,PNG_FILTER_NONE	3132	and eax,PNG_FILTER_NONE
3142	cmp eax,0	3133	jz .end0
3143	je .end0	-
3144	cmp dword[filter_to_do],PNG_FILTER_NONE	3134	cmp dword[filter_to_do],PNG_FILTER_NONE
3145	je .end0 ;else if (..!=0 && ..!=..)	3135	je .end0 ;else if (..!=0 && ..!=..)
3146	; Overflow not possible and multiple filters in the list, including the	3136	; Overflow not possible and multiple filters in the list, including the
3147	; 'none' filter.	3137	; 'none' filter.
3148		3138
Line 3169...	Line 3159...
3169	mov [best_row],eax	3159	mov [best_row],eax
3170	jmp .end1	3160	jmp .end1
3171	@@:	3161	@@:
3172	and eax,PNG_FILTER_SUB	3162	and eax,PNG_FILTER_SUB
3173	cmp eax,0	3163	jz .end1 ;else if (..!=0)
3174	je .end1 ;else if (..!=0)	-
3175	stdcall png_setup_sub_row, edi, [bpp], [row_bytes], [mins]	3164	stdcall png_setup_sub_row, edi, [bpp], [row_bytes], [mins]
3176	cmp eax,[mins]	3165	cmp eax,[mins]
3177	jge .end1 ;if (..<..)	3166	jge .end1 ;if (..<..)
3178	mov [mins],eax	3167	mov [mins],eax
3179	mov eax,[edi+png_struct.try_row]	3168	mov eax,[edi+png_struct.try_row]
3180	mov [best_row],eax	3169	mov [best_row],eax
Line 3196...	Line 3185...
3196	mov [best_row],eax	3185	mov [best_row],eax
3197	jmp .end2	3186	jmp .end2
3198	@@:	3187	@@:
3199	and eax,PNG_FILTER_UP	3188	and eax,PNG_FILTER_UP
3200	cmp eax,0	3189	jz .end2 ;else if (..!=0)
3201	je .end2 ;else if (..!=0)	-
3202	stdcall png_setup_up_row, edi, [row_bytes], [mins]	3190	stdcall png_setup_up_row, edi, [row_bytes], [mins]
3203	cmp eax,[mins]	3191	cmp eax,[mins]
3204	jge .end2 ;if (..<..)	3192	jge .end2 ;if (..<..)
3205	mov [mins],eax	3193	mov [mins],eax
3206	mov eax,[edi+png_struct.try_row]	3194	mov eax,[edi+png_struct.try_row]
3207	mov [best_row],eax	3195	mov [best_row],eax
Line 3223...	Line 3211...
3223	mov [best_row],eax	3211	mov [best_row],eax
3224	jmp .end3	3212	jmp .end3
3225	@@:	3213	@@:
3226	and eax,PNG_FILTER_AVG	3214	and eax,PNG_FILTER_AVG
3227	cmp eax,0	3215	jz .end3 ;else if (..!=0)
3228	je .end3 ;else if (..!=0)	-
3229	stdcall png_setup_avg_row, edi, [bpp], [row_bytes], [mins]	3216	stdcall png_setup_avg_row, edi, [bpp], [row_bytes], [mins]
3230	cmp eax,[mins]	3217	cmp eax,[mins]
3231	jge .end3 ;if (..<..)	3218	jge .end3 ;if (..<..)
3232	mov [mins],eax	3219	mov [mins],eax
3233	mov eax,[edi+png_struct.try_row]	3220	mov eax,[edi+png_struct.try_row]
3234	mov [best_row],eax	3221	mov [best_row],eax
Line 3250...	Line 3237...
3250	mov [best_row],eax	3237	mov [best_row],eax
3251	jmp .end4	3238	jmp .end4
3252	@@:	3239	@@:
3253	and eax,PNG_FILTER_PAETH	3240	and eax,PNG_FILTER_PAETH
3254	cmp eax,0	3241	jz .end4 ;else if (..!=0)
3255	je .end4 ;else if (..!=0)	-
3256	stdcall png_setup_paeth_row, edi, [bpp], [row_bytes], [mins]	3242	stdcall png_setup_paeth_row, edi, [bpp], [row_bytes], [mins]
3257	cmp eax,[mins]	3243	cmp eax,[mins]
3258	jge .end4 ;if (..<..)	3244	jge .end4 ;if (..<..)
3259	mov [mins],eax	3245	mov [mins],eax
3260	mov eax,[edi+png_struct.try_row]	3246	mov eax,[edi+png_struct.try_row]
3261	mov [best_row],eax	3247	mov [best_row],eax

Subversion Repositories Kolibri OS

(root)/programs/develop/libraries/libs-dev/libimg/png/libpng/pngwutil.asm – Rev 6779 → 6780