| 1 |
;;================================================================================================;; |
1 |
;;================================================================================================;; |
| 2 |
;;//// bmp.asm //// (c) mike.dld, 2007-2008, (c) diamond, 2009 ///////////////////////////////////;; |
2 |
;;//// bmp.asm //// (c) mike.dld, 2007-2008, (c) diamond, 2009 ///////////////////////////////////;; |
| 3 |
;;================================================================================================;; |
3 |
;;================================================================================================;; |
| 4 |
;; ;; |
4 |
;; ;; |
| 5 |
;; This file is part of Common development libraries (Libs-Dev). ;; |
5 |
;; This file is part of Common development libraries (Libs-Dev). ;; |
| 6 |
;; ;; |
6 |
;; ;; |
| 7 |
;; Libs-Dev is free software: you can redistribute it and/or modify it under the terms of the GNU ;; |
7 |
;; Libs-Dev is free software: you can redistribute it and/or modify it under the terms of the GNU ;; |
| 8 |
;; Lesser General Public License as published by the Free Software Foundation, either version 2.1 ;; |
8 |
;; Lesser General Public License as published by the Free Software Foundation, either version 2.1 ;; |
| 9 |
;; of the License, or (at your option) any later version. ;; |
9 |
;; of the License, or (at your option) any later version. ;; |
| 10 |
;; ;; |
10 |
;; ;; |
| 11 |
;; Libs-Dev is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without ;; |
11 |
;; Libs-Dev is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without ;; |
| 12 |
;; even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU ;; |
12 |
;; even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU ;; |
| 13 |
;; Lesser General Public License for more details. ;; |
13 |
;; Lesser General Public License for more details. ;; |
| 14 |
;; ;; |
14 |
;; ;; |
| 15 |
;; You should have received a copy of the GNU Lesser General Public License along with Libs-Dev. ;; |
15 |
;; You should have received a copy of the GNU Lesser General Public License along with Libs-Dev. ;; |
| 16 |
;; If not, see . ;; |
16 |
;; If not, see . ;; |
| 17 |
;; ;; |
17 |
;; ;; |
| 18 |
;;================================================================================================;; |
18 |
;;================================================================================================;; |
| 19 |
;; ;; |
19 |
;; ;; |
| 20 |
;; References: ;; |
20 |
;; References: ;; |
| 21 |
;; 1. "Microsoft Windows Bitmap File Format Summary" ;; |
21 |
;; 1. "Microsoft Windows Bitmap File Format Summary" ;; |
| 22 |
;; from "Encyclopedia of Graphics File Formats" by O'Reilly ;; |
22 |
;; from "Encyclopedia of Graphics File Formats" by O'Reilly ;; |
| 23 |
;; http://www.fileformat.info/format/bmp/ ;; |
23 |
;; http://www.fileformat.info/format/bmp/ ;; |
| 24 |
;; ;; |
24 |
;; ;; |
| 25 |
;;================================================================================================;; |
25 |
;;================================================================================================;; |
| 26 |
|
26 |
|
| 27 |
|
27 |
|
| 28 |
include 'bmp.inc' |
28 |
include 'bmp.inc' |
| 29 |
|
29 |
|
| 30 |
;;================================================================================================;; |
30 |
;;================================================================================================;; |
| 31 |
;;proc img.is.bmp _data, _length ;////////////////////////////////////////////////////////////////;; |
31 |
;;proc img.is.bmp _data, _length ;////////////////////////////////////////////////////////////////;; |
| 32 |
img.is.bmp: |
32 |
img.is.bmp: |
| 33 |
;;------------------------------------------------------------------------------------------------;; |
33 |
;;------------------------------------------------------------------------------------------------;; |
| 34 |
;? Determine if raw data could be decoded (is in BMP format) ;; |
34 |
;? Determine if raw data could be decoded (is in BMP format) ;; |
| 35 |
;;------------------------------------------------------------------------------------------------;; |
35 |
;;------------------------------------------------------------------------------------------------;; |
| 36 |
;> _data = raw data as read from file/stream ;; |
36 |
;> _data = raw data as read from file/stream ;; |
| 37 |
;> _length = data length ;; |
37 |
;> _length = data length ;; |
| 38 |
;;------------------------------------------------------------------------------------------------;; |
38 |
;;------------------------------------------------------------------------------------------------;; |
| 39 |
;< eax = false / true ;; |
39 |
;< eax = false / true ;; |
| 40 |
;;================================================================================================;; |
40 |
;;================================================================================================;; |
| 41 |
; test 1 (length of data): data must contain FileHeader and required fields from InfoHeader |
41 |
; test 1 (length of data): data must contain FileHeader and required fields from InfoHeader |
| 42 |
cmp dword [esp+8], sizeof.bmp.FileHeader + 12 |
42 |
cmp dword [esp+8], sizeof.bmp.FileHeader + 12 |
| 43 |
jb .nope |
43 |
jb .nope |
| 44 |
; test 2: signature |
44 |
; test 2: signature |
| 45 |
mov eax, [esp+4] |
45 |
mov eax, [esp+4] |
| 46 |
cmp word [eax], 'BM' |
46 |
cmp word [eax], 'BM' |
| 47 |
je .yep |
47 |
je .yep |
| 48 |
|
48 |
|
| 49 |
.nope: |
49 |
.nope: |
| 50 |
xor eax, eax |
50 |
xor eax, eax |
| 51 |
ret 8 |
51 |
ret 8 |
| 52 |
|
52 |
|
| 53 |
.yep: |
53 |
.yep: |
| 54 |
xor eax, eax |
54 |
xor eax, eax |
| 55 |
inc eax |
55 |
inc eax |
| 56 |
ret 8 |
56 |
ret 8 |
| 57 |
;endp |
57 |
;endp |
| 58 |
|
58 |
|
| 59 |
;;================================================================================================;; |
59 |
;;================================================================================================;; |
| 60 |
proc img.decode.bmp _data, _length ;//////////////////////////////////////////////////////////////;; |
60 |
proc img.decode.bmp _data, _length, _options ;////////////////////////////////////////////////////;; |
| 61 |
;;------------------------------------------------------------------------------------------------;; |
61 |
;;------------------------------------------------------------------------------------------------;; |
| 62 |
;? Decode data into image if it contains correctly formed raw data in BMP format ;; |
62 |
;? Decode data into image if it contains correctly formed raw data in BMP format ;; |
| 63 |
;;------------------------------------------------------------------------------------------------;; |
63 |
;;------------------------------------------------------------------------------------------------;; |
| 64 |
;> _data = raw data as read from file/stream ;; |
64 |
;> _data = raw data as read from file/stream ;; |
| 65 |
;> _length = data length ;; |
65 |
;> _length = data length ;; |
| 66 |
;;------------------------------------------------------------------------------------------------;; |
66 |
;;------------------------------------------------------------------------------------------------;; |
| 67 |
;< eax = 0 (error) or pointer to image ;; |
67 |
;< eax = 0 (error) or pointer to image ;; |
| 68 |
;;================================================================================================;; |
68 |
;;================================================================================================;; |
| 69 |
locals |
69 |
locals |
| - |
|
70 |
length_rest dd ? |
| 70 |
img dd ? |
71 |
img dd ? |
| 71 |
bTopDown db ? |
72 |
bTopDown db ? |
| - |
|
73 |
bIsIco db ? |
| 72 |
endl |
74 |
endl |
| - |
|
75 |
img.decode.bmp.length_rest equ length_rest |
| - |
|
76 |
mov [bIsIco], 0 |
| - |
|
77 |
.common: ; common place for BMP and ICO |
| 73 |
|
78 |
|
| 74 |
push ebx esi edi |
79 |
push ebx esi edi |
| 75 |
|
- |
|
| 76 |
; img.is.bmp has been already called by img.decode |
- |
|
| 77 |
; stdcall img.is.bmp, [_data], [_length] |
- |
|
| 78 |
; or eax, eax |
- |
|
| 79 |
; jz .error |
- |
|
| 80 |
|
80 |
|
| 81 |
mov ebx, [_data] |
81 |
mov ebx, [_data] |
| 82 |
; cmp [ebx + bmp.Header.info.Compression], bmp.BI_RGB |
82 |
cmp [bIsIco], 0 |
| 83 |
; je @f |
83 |
jnz @f |
| 84 |
; mov eax, [ebx + bmp.Header.file.Size] |
84 |
add ebx, sizeof.bmp.FileHeader |
| 85 |
; cmp eax, [_length] |
- |
|
| 86 |
; jne .error |
85 |
sub [_length], sizeof.bmp.FileHeader |
| 87 |
; @@: |
86 |
@@: |
| 88 |
|
87 |
|
| 89 |
mov eax, [ebx + bmp.Header.info.Size] |
- |
|
| 90 |
; sanity check: file length must be greater than size of headers |
88 |
mov eax, [ebx + bmp.InfoHeader.Size] |
| 91 |
add eax, sizeof.bmp.FileHeader |
89 |
; sanity check: file length must be greater than size of headers |
| 92 |
cmp [_length], eax |
90 |
cmp [_length], eax |
| 93 |
jbe .error |
91 |
jbe .error |
| 94 |
|
92 |
|
| 95 |
mov [bTopDown], 0 |
93 |
mov [bTopDown], 0 |
| 96 |
|
94 |
|
| 97 |
cmp eax, sizeof.bmp.FileHeader + 12 |
95 |
cmp eax, 12 |
| 98 |
jz .old1 |
96 |
jz .old1 |
| 99 |
cmp eax, sizeof.bmp.FileHeader + 40 |
97 |
cmp eax, 40 |
| 100 |
jz .normal |
98 |
jz .normal |
| 101 |
cmp eax, sizeof.bmp.FileHeader + 56 |
99 |
cmp eax, 56 |
| 102 |
jnz .error |
100 |
jnz .error |
| 103 |
; convert images with <= 8 bpp to 8bpp, other - to 32 bpp |
101 |
; convert images with <= 8 bpp to 8bpp, other - to 32 bpp |
| 104 |
.normal: |
102 |
.normal: |
| 105 |
m2m eax, Image.bpp8 |
103 |
m2m eax, Image.bpp8 |
| 106 |
cmp [ebx + bmp.Header.info.BitCount], 8 |
104 |
cmp byte [ebx + 14], 8 ; bit count |
| 107 |
jbe @f |
105 |
jbe @f |
| 108 |
mov al, Image.bpp32 |
106 |
mov al, Image.bpp32 |
| 109 |
@@: |
107 |
@@: |
| 110 |
push eax |
108 |
push eax |
| 111 |
mov eax, [ebx + bmp.Header.info.Height] |
109 |
mov eax, [ebx + 8] ;[ebx + bmp.InfoHeader.Height] |
| 112 |
test eax, eax |
110 |
test eax, eax |
| 113 |
jns @f |
111 |
jns @f |
| 114 |
inc [bTopDown] |
112 |
inc [bTopDown] |
| 115 |
neg eax |
113 |
neg eax |
| 116 |
@@: |
114 |
@@: |
| - |
|
115 |
cmp [bIsIco], 0 ; for icons Height is two times larger than image height |
| - |
|
116 |
jz @f |
| - |
|
117 |
shr eax, 1 |
| - |
|
118 |
@@: |
| 117 |
pushd eax |
119 |
pushd eax |
| 118 |
pushd [ebx + bmp.Header.info.Width] |
120 |
pushd [ebx + 4] ;[ebx + bmp.InfoHeader.Width] |
| 119 |
jmp .create |
121 |
jmp .create |
| 120 |
.old1: |
122 |
.old1: |
| 121 |
m2m eax, Image.bpp8 |
123 |
m2m eax, Image.bpp8 |
| 122 |
cmp [ebx + bmp.Header.info.OldBitCount], 8 |
124 |
cmp byte [ebx + 10], 8 ; bit count |
| 123 |
jbe @f |
125 |
jbe @f |
| 124 |
mov al, Image.bpp32 |
126 |
mov al, Image.bpp32 |
| 125 |
@@: |
127 |
@@: |
| 126 |
push eax |
128 |
push eax |
| 127 |
movsx eax, [ebx + bmp.Header.info.OldHeight] |
129 |
movsx eax, word [ebx + 6] ;[ebx + bmp.InfoHeader.OldHeight] |
| 128 |
test eax, eax |
130 |
test eax, eax |
| 129 |
jns @f |
131 |
jns @f |
| 130 |
inc [bTopDown] |
132 |
inc [bTopDown] |
| 131 |
neg eax |
133 |
neg eax |
| 132 |
@@: |
134 |
@@: |
| - |
|
135 |
cmp [bIsIco], 0 ; for icons Height is two times larger than image height |
| - |
|
136 |
jz @f |
| - |
|
137 |
shr eax, 1 |
| - |
|
138 |
@@: |
| 133 |
push eax |
139 |
push eax |
| 134 |
movzx eax, [ebx + bmp.Header.info.OldWidth] |
140 |
movzx eax, word [ebx + 4] ;[ebx + bmp.InfoHeader.OldWidth] |
| 135 |
push eax |
141 |
push eax |
| 136 |
.create: |
142 |
.create: |
| 137 |
call img.create |
143 |
call img.create |
| 138 |
|
144 |
|
| 139 |
or eax, eax |
145 |
or eax, eax |
| 140 |
jz .error |
146 |
jz .error |
| 141 |
mov [img], eax |
147 |
mov [img], eax |
| 142 |
mov edx, eax |
148 |
mov edx, eax |
| 143 |
|
149 |
|
| 144 |
invoke mem.alloc, sizeof.bmp.Image |
150 |
invoke mem.alloc, sizeof.bmp.Image |
| 145 |
or eax, eax |
151 |
or eax, eax |
| 146 |
jz .error.free |
152 |
jz .error.free |
| 147 |
mov [edx + Image.Extended], eax |
153 |
mov [edx + Image.Extended], eax |
| 148 |
push eax |
154 |
push eax |
| 149 |
mov edi, eax |
155 |
mov edi, eax |
| 150 |
mov ecx, sizeof.bmp.Image/4 |
156 |
mov ecx, sizeof.bmp.Image/4 |
| 151 |
xor eax, eax |
157 |
xor eax, eax |
| 152 |
rep stosd |
158 |
rep stosd |
| 153 |
pop edi |
159 |
pop edi |
| 154 |
lea esi, [ebx + sizeof.bmp.FileHeader] |
160 |
push edi |
| 155 |
pushd [ebx + bmp.FileHeader.OffBits] |
161 |
mov esi, ebx |
| 156 |
mov ecx, [esi + bmp.InfoHeader.Size] |
162 |
mov ecx, [ebx] ;[ebx + bmp.InfoHeader.Size] |
| 157 |
cmp ecx, 12 |
163 |
cmp ecx, 12 |
| 158 |
jz .old2 |
164 |
jz .old2 |
| 159 |
rep movsb |
165 |
rep movsb |
| 160 |
jmp .decode |
166 |
jmp .decode |
| 161 |
.old2: |
167 |
.old2: |
| 162 |
movsd ; Size |
168 |
movsd ; Size |
| 163 |
movzx eax, word [esi] ; OldWidth -> Width |
169 |
movzx eax, word [esi] ; OldWidth -> Width |
| 164 |
stosd |
170 |
stosd |
| 165 |
movsx eax, word [esi+2] ; OldHeight -> Height |
171 |
movsx eax, word [esi+2] ; OldHeight -> Height |
| 166 |
stosd |
172 |
stosd |
| 167 |
lodsd ; skip OldWidth+OldHeight |
173 |
lodsd ; skip OldWidth+OldHeight |
| 168 |
movsd ; Planes+BitCount |
174 |
movsd ; Planes+BitCount |
| 169 |
.decode: |
175 |
.decode: |
| 170 |
|
176 |
|
| - |
|
177 |
pop edi |
| - |
|
178 |
cmp [bIsIco], 0 |
| - |
|
179 |
jnz @f |
| - |
|
180 |
mov edi, [_length] |
| - |
|
181 |
add edi, sizeof.bmp.FileHeader |
| - |
|
182 |
mov esi, [ebx - sizeof.bmp.FileHeader + bmp.FileHeader.OffBits] |
| - |
|
183 |
jmp .offset_calculated |
| - |
|
184 |
@@: |
| - |
|
185 |
xor esi, esi |
| - |
|
186 |
mov cl, byte [edi + bmp.Image.info.BitCount] |
| - |
|
187 |
cmp cl, 8 |
| - |
|
188 |
ja @f |
| - |
|
189 |
inc esi |
| - |
|
190 |
add cl, 2 |
| - |
|
191 |
shl esi, cl |
| - |
|
192 |
@@: |
| 171 |
pop eax |
193 |
add esi, [edi + bmp.Image.info.Size] |
| - |
|
194 |
mov edi, [_length] |
| 172 |
mov esi, [_length] |
195 |
.offset_calculated: |
| 173 |
sub esi, eax |
196 |
sub edi, esi |
| - |
|
197 |
jbe .error.free |
| 174 |
jbe .error.free |
198 |
add esi, [_data] |
| 175 |
|
199 |
|
| 176 |
mov eax, [edx + Image.Extended] |
200 |
mov eax, [edx + Image.Extended] |
| 177 |
mov eax, [eax + bmp.Image.info.Compression] |
201 |
mov eax, [eax + bmp.Image.info.Compression] |
| 178 |
cmp eax, bmp.BI_RGB |
202 |
cmp eax, bmp.BI_RGB |
| 179 |
jne @f |
203 |
jne @f |
| 180 |
stdcall ._.rgb |
204 |
stdcall ._.rgb |
| 181 |
jmp .decoded |
205 |
jmp .decoded |
| 182 |
@@: cmp eax, bmp.BI_RLE8 |
206 |
@@: cmp eax, bmp.BI_RLE8 |
| 183 |
jne @f |
207 |
jne @f |
| 184 |
cmp [ebx + bmp.Header.info.BitCount], 8 |
208 |
cmp word [ebx + 14], 8 ;bmp.InfoHeader.BitCount |
| 185 |
jnz .error.free |
209 |
jnz .error.free |
| 186 |
stdcall ._.rle |
210 |
stdcall ._.rle |
| 187 |
jmp .decoded |
211 |
jmp .decoded |
| 188 |
@@: cmp eax, bmp.BI_RLE4 |
212 |
@@: cmp eax, bmp.BI_RLE4 |
| 189 |
jne @f |
213 |
jne @f |
| 190 |
cmp [ebx + bmp.Header.info.BitCount], 4 |
214 |
cmp word [ebx + 14], 4 |
| 191 |
jnz .error.free |
215 |
jnz .error.free |
| 192 |
stdcall ._.rle |
216 |
stdcall ._.rle |
| 193 |
jmp .decoded |
217 |
jmp .decoded |
| 194 |
@@: cmp eax, bmp.BI_BITFIELDS |
218 |
@@: cmp eax, bmp.BI_BITFIELDS |
| 195 |
jne .error.free |
219 |
jne .error.free |
| 196 |
stdcall ._.bitfields |
220 |
stdcall ._.bitfields |
| 197 |
jmp .decoded |
221 |
jmp .decoded |
| 198 |
; BI_JPEG and BI_PNG constants are not valid values for BMP file, |
222 |
; BI_JPEG and BI_PNG constants are not valid values for BMP file, |
| 199 |
; they are intended for WinAPI |
223 |
; they are intended for WinAPI |
| 200 |
; @@: cmp eax, bmp.BI_JPEG |
224 |
; @@: cmp eax, bmp.BI_JPEG |
| 201 |
; jne @f |
225 |
; jne @f |
| 202 |
; stdcall ._.jpeg |
226 |
; stdcall ._.jpeg |
| 203 |
; jmp .decoded |
227 |
; jmp .decoded |
| 204 |
; @@: cmp eax, bmp.BI_PNG |
228 |
; @@: cmp eax, bmp.BI_PNG |
| 205 |
; jne .error |
229 |
; jne .error |
| 206 |
; stdcall ._.png |
230 |
; stdcall ._.png |
| 207 |
|
231 |
|
| 208 |
.decoded: |
232 |
.decoded: |
| 209 |
or eax, eax |
233 |
or eax, eax |
| 210 |
jz @f |
234 |
jz @f |
| 211 |
.error.free: |
235 |
.error.free: |
| 212 |
stdcall img.destroy, [img] |
236 |
stdcall img.destroy, [img] |
| 213 |
jmp .error |
237 |
jmp .error |
| 214 |
|
238 |
|
| 215 |
@@: |
239 |
@@: |
| 216 |
cmp [bTopDown], 0 |
240 |
cmp [bTopDown], 0 |
| 217 |
jnz @f |
241 |
jnz @f |
| 218 |
stdcall img.flip, [img], FLIP_VERTICAL |
242 |
stdcall img.flip, [img], FLIP_VERTICAL |
| 219 |
@@: |
243 |
@@: |
| 220 |
mov eax, [img] |
244 |
mov eax, [img] |
| - |
|
245 |
mov ecx, [length_rest] ; return length for ICO code |
| - |
|
246 |
cmp [bIsIco], 0 |
| - |
|
247 |
jz @f |
| - |
|
248 |
mov [esp + 4], esi ; return pointer to end-of-data for ICO code |
| - |
|
249 |
@@: |
| 221 |
pop edi esi ebx |
250 |
pop edi esi ebx |
| 222 |
ret |
251 |
ret |
| 223 |
|
252 |
|
| 224 |
.error: |
253 |
.error: |
| 225 |
xor eax, eax |
254 |
xor eax, eax |
| 226 |
pop edi esi ebx |
255 |
pop edi esi ebx |
| 227 |
ret |
256 |
ret |
| 228 |
endp |
257 |
endp |
| 229 |
|
258 |
|
| 230 |
;;================================================================================================;; |
259 |
;;================================================================================================;; |
| 231 |
proc img.encode.bmp _img, _p_length ;/////////////////////////////////////////////////////////////;; |
260 |
proc img.encode.bmp _img, _p_length, _options ;///////////////////////////////////////////////////;; |
| 232 |
;;------------------------------------------------------------------------------------------------;; |
261 |
;;------------------------------------------------------------------------------------------------;; |
| 233 |
;? Encode image into raw data in BMP format ;; |
262 |
;? Encode image into raw data in BMP format ;; |
| 234 |
;;------------------------------------------------------------------------------------------------;; |
263 |
;;------------------------------------------------------------------------------------------------;; |
| 235 |
;> _img = pointer to image ;; |
264 |
;> _img = pointer to image ;; |
| 236 |
;;------------------------------------------------------------------------------------------------;; |
265 |
;;------------------------------------------------------------------------------------------------;; |
| 237 |
;< eax = 0 (error) or pointer to encoded data ;; |
266 |
;< eax = 0 (error) or pointer to encoded data ;; |
| 238 |
;< _p_length = encoded data length ;; |
267 |
;< _p_length = encoded data length ;; |
| 239 |
;;================================================================================================;; |
268 |
;;================================================================================================;; |
| 240 |
xor eax, eax |
269 |
xor eax, eax |
| 241 |
ret |
270 |
ret |
| 242 |
endp |
271 |
endp |
| 243 |
|
272 |
|
| 244 |
|
273 |
|
| 245 |
;;================================================================================================;; |
274 |
;;================================================================================================;; |
| 246 |
;;////////////////////////////////////////////////////////////////////////////////////////////////;; |
275 |
;;////////////////////////////////////////////////////////////////////////////////////////////////;; |
| 247 |
;;================================================================================================;; |
276 |
;;================================================================================================;; |
| 248 |
;! Below are private procs you should never call directly from your code ;; |
277 |
;! Below are private procs you should never call directly from your code ;; |
| 249 |
;;================================================================================================;; |
278 |
;;================================================================================================;; |
| 250 |
;;////////////////////////////////////////////////////////////////////////////////////////////////;; |
279 |
;;////////////////////////////////////////////////////////////////////////////////////////////////;; |
| 251 |
;;================================================================================================;; |
280 |
;;================================================================================================;; |
| 252 |
|
281 |
|
| 253 |
|
282 |
|
| 254 |
;;================================================================================================;; |
283 |
;;================================================================================================;; |
| 255 |
proc img.decode.bmp._.rgb ;///////////////////////////////////////////////////////////////////////;; |
284 |
proc img.decode.bmp._.rgb ;///////////////////////////////////////////////////////////////////////;; |
| 256 |
;;------------------------------------------------------------------------------------------------;; |
285 |
;;------------------------------------------------------------------------------------------------;; |
| 257 |
;? --- TBD --- ;; |
286 |
;? --- TBD --- ;; |
| 258 |
;;------------------------------------------------------------------------------------------------;; |
287 |
;;------------------------------------------------------------------------------------------------;; |
| 259 |
;> ebx = raw image data ;; |
288 |
;> ebx = raw image data ;; |
| 260 |
;> edx = image data ;; |
289 |
;> edx = image data ;; |
| 261 |
;;------------------------------------------------------------------------------------------------;; |
290 |
;;------------------------------------------------------------------------------------------------;; |
| 262 |
;< --- TBD --- ;; |
291 |
;< --- TBD --- ;; |
| 263 |
;;================================================================================================;; |
292 |
;;================================================================================================;; |
| 264 |
mov ecx, [edx + Image.Extended] |
293 |
mov ecx, [edx + Image.Extended] |
| 265 |
mov [ecx + bmp.Image.info.AlphaMask], 0 |
294 |
mov [ecx + bmp.Image.info.AlphaMask], 0 |
| 266 |
mov edi, [edx + Image.Data] |
- |
|
| 267 |
|
295 |
|
| 268 |
movzx eax, [ecx + bmp.Image.info.BitCount] |
296 |
movzx eax, [ecx + bmp.Image.info.BitCount] |
| 269 |
cmp eax, 32 |
297 |
cmp eax, 32 |
| 270 |
je .32bpp |
298 |
je .32bpp |
| 271 |
cmp eax, 24 |
299 |
cmp eax, 24 |
| 272 |
je .24bpp |
300 |
je .24bpp |
| 273 |
cmp eax, 16 |
301 |
cmp eax, 16 |
| 274 |
je .16bpp |
302 |
je .16bpp |
| 275 |
cmp eax, 8 |
303 |
cmp eax, 8 |
| 276 |
je .8bpp |
304 |
je .8bpp |
| 277 |
cmp eax, 4 |
305 |
cmp eax, 4 |
| 278 |
je .4bpp |
306 |
je .4bpp |
| 279 |
cmp eax, 1 |
307 |
cmp eax, 1 |
| 280 |
je .1bpp |
308 |
je .1bpp |
| 281 |
jmp .error |
309 |
jmp .error |
| 282 |
|
310 |
|
| 283 |
;;------------------------------------------------------------------------------------------------;; |
311 |
;;------------------------------------------------------------------------------------------------;; |
| 284 |
|
312 |
|
| 285 |
img.decode.bmp._.rgb.32bpp: |
313 |
img.decode.bmp._.rgb.32bpp: |
| 286 |
mov [ecx + bmp.Image.info.RedMask], 00000000111111110000000000000000b ; 8-0-0 |
314 |
mov [ecx + bmp.Image.info.RedMask], 00000000111111110000000000000000b ; 8-0-0 |
| 287 |
mov [ecx + bmp.Image.info.GreenMask], 00000000000000001111111100000000b ; 0-8-0 |
315 |
mov [ecx + bmp.Image.info.GreenMask], 00000000000000001111111100000000b ; 0-8-0 |
| 288 |
mov [ecx + bmp.Image.info.BlueMask], 00000000000000000000000011111111b ; 0-0-8 |
316 |
mov [ecx + bmp.Image.info.BlueMask], 00000000000000000000000011111111b ; 0-0-8 |
| 289 |
stdcall img.decode.bmp._.bitfields |
317 |
stdcall img.decode.bmp._.bitfields |
| 290 |
ret |
318 |
ret |
| 291 |
|
319 |
|
| 292 |
;;------------------------------------------------------------------------------------------------;; |
320 |
;;------------------------------------------------------------------------------------------------;; |
| 293 |
|
321 |
|
| 294 |
img.decode.bmp._.rgb.24bpp: |
322 |
img.decode.bmp._.rgb.24bpp: |
| 295 |
mov eax, [edx + Image.Width] |
323 |
mov eax, [edx + Image.Width] |
| 296 |
lea eax, [eax*3 + 3] |
324 |
lea eax, [eax*3 + 3] |
| 297 |
and eax, not 3 |
325 |
and eax, not 3 |
| 298 |
mov ecx, [edx + Image.Height] |
326 |
mov ecx, [edx + Image.Height] |
| 299 |
imul eax, ecx |
327 |
imul eax, ecx |
| 300 |
cmp esi, eax |
328 |
sub edi, eax |
| 301 |
jb img.decode.bmp._.rgb.error |
329 |
jb img.decode.bmp._.rgb.error |
| 302 |
mov esi, ebx |
330 |
mov [img.decode.bmp.length_rest], edi |
| 303 |
add esi, [ebx + bmp.Header.file.OffBits] |
331 |
mov edi, [edx + Image.Data] |
| 304 |
|
332 |
|
| 305 |
.next_line: |
333 |
.next_line: |
| 306 |
push ecx edx |
334 |
push ecx edx |
| 307 |
mov ecx, [edx + Image.Width] |
335 |
mov ecx, [edx + Image.Width] |
| 308 |
xor edx, edx |
336 |
xor edx, edx |
| 309 |
|
337 |
|
| 310 |
.next_line_pixel: |
338 |
.next_line_pixel: |
| 311 |
movsd |
339 |
movsd |
| 312 |
dec esi |
340 |
dec esi |
| 313 |
inc edx |
341 |
inc edx |
| 314 |
dec ecx |
342 |
dec ecx |
| 315 |
jnz .next_line_pixel |
343 |
jnz .next_line_pixel |
| 316 |
|
344 |
|
| 317 |
and edx, 0x03 |
345 |
and edx, 0x03 |
| 318 |
add esi, edx |
346 |
add esi, edx |
| 319 |
pop edx ecx |
347 |
pop edx ecx |
| 320 |
dec ecx |
348 |
dec ecx |
| 321 |
jnz .next_line |
349 |
jnz .next_line |
| 322 |
|
350 |
|
| 323 |
jmp img.decode.bmp._.rgb.exit |
351 |
jmp img.decode.bmp._.rgb.exit |
| 324 |
|
352 |
|
| 325 |
;;------------------------------------------------------------------------------------------------;; |
353 |
;;------------------------------------------------------------------------------------------------;; |
| 326 |
|
354 |
|
| 327 |
img.decode.bmp._.rgb.16bpp: |
355 |
img.decode.bmp._.rgb.16bpp: |
| 328 |
mov [ecx + bmp.Image.info.RedMask], 00000000000000000111110000000000b ; 5-0-0 |
356 |
mov [ecx + bmp.Image.info.RedMask], 00000000000000000111110000000000b ; 5-0-0 |
| 329 |
mov [ecx + bmp.Image.info.GreenMask], 00000000000000000000001111100000b ; 0-5-0 |
357 |
mov [ecx + bmp.Image.info.GreenMask], 00000000000000000000001111100000b ; 0-5-0 |
| 330 |
mov [ecx + bmp.Image.info.BlueMask], 00000000000000000000000000011111b ; 0-0-5 |
358 |
mov [ecx + bmp.Image.info.BlueMask], 00000000000000000000000000011111b ; 0-0-5 |
| 331 |
stdcall img.decode.bmp._.bitfields |
359 |
stdcall img.decode.bmp._.bitfields |
| 332 |
ret |
360 |
ret |
| 333 |
|
361 |
|
| 334 |
;;------------------------------------------------------------------------------------------------;; |
362 |
;;------------------------------------------------------------------------------------------------;; |
| 335 |
|
363 |
|
| 336 |
img.decode.bmp._.rgb.8bpp: |
364 |
img.decode.bmp._.rgb.8bpp: |
| 337 |
mov eax, [edx + Image.Width] |
365 |
mov eax, [edx + Image.Width] |
| 338 |
add eax, 3 |
366 |
add eax, 3 |
| 339 |
call img.decode.bmp._.rgb.prepare_palette |
367 |
call img.decode.bmp._.rgb.prepare_palette |
| 340 |
jc img.decode.bmp._.rgb.error |
368 |
jc img.decode.bmp._.rgb.error |
| 341 |
|
369 |
|
| 342 |
.next_line: |
370 |
.next_line: |
| 343 |
push ecx |
371 |
push ecx |
| 344 |
mov ecx, [edx + Image.Width] |
372 |
mov ecx, [edx + Image.Width] |
| 345 |
mov eax, ecx |
373 |
mov eax, ecx |
| 346 |
neg eax |
374 |
neg eax |
| 347 |
and eax, 3 |
375 |
and eax, 3 |
| 348 |
rep movsb |
376 |
rep movsb |
| 349 |
add esi, eax |
377 |
add esi, eax |
| 350 |
pop ecx |
378 |
pop ecx |
| 351 |
dec ecx |
379 |
dec ecx |
| 352 |
jnz .next_line |
380 |
jnz .next_line |
| 353 |
|
381 |
|
| 354 |
jmp img.decode.bmp._.rgb.exit |
382 |
jmp img.decode.bmp._.rgb.exit |
| 355 |
|
383 |
|
| 356 |
;;------------------------------------------------------------------------------------------------;; |
384 |
;;------------------------------------------------------------------------------------------------;; |
| 357 |
|
385 |
|
| 358 |
img.decode.bmp._.rgb.4bpp: |
386 |
img.decode.bmp._.rgb.4bpp: |
| 359 |
mov eax, [edx + Image.Width] |
387 |
mov eax, [edx + Image.Width] |
| 360 |
add eax, 7 |
388 |
add eax, 7 |
| 361 |
shr eax, 1 |
389 |
shr eax, 1 |
| 362 |
call img.decode.bmp._.rgb.prepare_palette |
390 |
call img.decode.bmp._.rgb.prepare_palette |
| 363 |
jc img.decode.bmp._.rgb.error |
391 |
jc img.decode.bmp._.rgb.error |
| 364 |
|
392 |
|
| 365 |
.next_line: |
393 |
.next_line: |
| 366 |
push ecx edx |
394 |
push ecx edx |
| 367 |
mov ecx, [edx + Image.Width] |
395 |
mov ecx, [edx + Image.Width] |
| 368 |
|
396 |
|
| 369 |
.next_line_dword: |
397 |
.next_line_dword: |
| 370 |
push ecx |
398 |
push ecx |
| 371 |
lodsd |
399 |
lodsd |
| 372 |
bswap eax |
400 |
bswap eax |
| 373 |
xchg edx, eax |
401 |
xchg edx, eax |
| 374 |
mov ecx, 32 / 4 |
402 |
mov ecx, 32 / 4 |
| 375 |
|
403 |
|
| 376 |
.next_pixel: |
404 |
.next_pixel: |
| 377 |
rol edx, 4 |
405 |
rol edx, 4 |
| 378 |
mov al, dl |
406 |
mov al, dl |
| 379 |
and al, 0x0000000F |
407 |
and al, 0x0000000F |
| 380 |
stosb |
408 |
stosb |
| 381 |
dec dword[esp] |
409 |
dec dword[esp] |
| 382 |
jz @f |
410 |
jz @f |
| 383 |
dec ecx |
411 |
dec ecx |
| 384 |
jnz .next_pixel |
412 |
jnz .next_pixel |
| 385 |
|
413 |
|
| 386 |
@@: pop ecx |
414 |
@@: pop ecx |
| 387 |
or ecx, ecx |
415 |
or ecx, ecx |
| 388 |
jnz .next_line_dword |
416 |
jnz .next_line_dword |
| 389 |
|
417 |
|
| 390 |
pop edx ecx |
418 |
pop edx ecx |
| 391 |
dec ecx |
419 |
dec ecx |
| 392 |
jnz .next_line |
420 |
jnz .next_line |
| 393 |
|
421 |
|
| 394 |
jmp img.decode.bmp._.rgb.exit |
422 |
jmp img.decode.bmp._.rgb.exit |
| 395 |
|
423 |
|
| 396 |
;;------------------------------------------------------------------------------------------------;; |
424 |
;;------------------------------------------------------------------------------------------------;; |
| 397 |
|
425 |
|
| 398 |
img.decode.bmp._.rgb.1bpp: |
426 |
img.decode.bmp._.rgb.1bpp: |
| 399 |
mov eax, [edx + Image.Width] |
427 |
mov eax, [edx + Image.Width] |
| 400 |
add eax, 31 |
428 |
add eax, 31 |
| 401 |
shr eax, 3 |
429 |
shr eax, 3 |
| 402 |
call img.decode.bmp._.rgb.prepare_palette |
430 |
call img.decode.bmp._.rgb.prepare_palette |
| 403 |
jc img.decode.bmp._.rgb.error |
431 |
jc img.decode.bmp._.rgb.error |
| 404 |
|
432 |
|
| 405 |
.next_line: |
433 |
.next_line: |
| 406 |
push ecx edx |
434 |
push ecx edx |
| 407 |
mov ecx, [edx + Image.Width] |
435 |
mov ecx, [edx + Image.Width] |
| 408 |
|
436 |
|
| 409 |
.next_line_dword: |
437 |
.next_line_dword: |
| 410 |
push ecx |
438 |
push ecx |
| 411 |
lodsd |
439 |
lodsd |
| 412 |
bswap eax |
440 |
bswap eax |
| 413 |
xchg edx, eax |
441 |
xchg edx, eax |
| 414 |
mov ecx, 32 / 1 |
442 |
mov ecx, 32 / 1 |
| 415 |
|
443 |
|
| 416 |
.next_pixel: |
444 |
.next_pixel: |
| 417 |
rol edx, 1 |
445 |
rol edx, 1 |
| 418 |
mov al, dl |
446 |
mov al, dl |
| 419 |
and al, 0x00000001 |
447 |
and al, 0x00000001 |
| 420 |
stosb |
448 |
stosb |
| 421 |
dec dword[esp] |
449 |
dec dword[esp] |
| 422 |
jz @f |
450 |
jz @f |
| 423 |
dec ecx |
451 |
dec ecx |
| 424 |
jnz .next_pixel |
452 |
jnz .next_pixel |
| 425 |
|
453 |
|
| 426 |
@@: pop ecx |
454 |
@@: pop ecx |
| 427 |
or ecx, ecx |
455 |
or ecx, ecx |
| 428 |
jnz .next_line_dword |
456 |
jnz .next_line_dword |
| 429 |
|
457 |
|
| 430 |
pop edx ecx |
458 |
pop edx ecx |
| 431 |
dec ecx |
459 |
dec ecx |
| 432 |
jnz .next_line |
460 |
jnz .next_line |
| 433 |
|
461 |
|
| 434 |
jmp img.decode.bmp._.rgb.exit |
462 |
jmp img.decode.bmp._.rgb.exit |
| 435 |
|
463 |
|
| 436 |
;;------------------------------------------------------------------------------------------------;; |
464 |
;;------------------------------------------------------------------------------------------------;; |
| 437 |
|
465 |
|
| 438 |
img.decode.bmp._.rgb.exit: |
466 |
img.decode.bmp._.rgb.exit: |
| 439 |
xor eax, eax |
467 |
xor eax, eax |
| 440 |
ret |
468 |
ret |
| 441 |
|
469 |
|
| 442 |
img.decode.bmp._.rgb.error: |
470 |
img.decode.bmp._.rgb.error: |
| 443 |
or eax, -1 |
471 |
or eax, -1 |
| 444 |
ret |
472 |
ret |
| 445 |
|
473 |
|
| 446 |
img.decode.bmp._.rgb.prepare_palette: |
474 |
img.decode.bmp._.rgb.prepare_palette: |
| 447 |
and eax, not 3 |
475 |
and eax, not 3 |
| 448 |
mov ecx, [edx + Image.Height] |
476 |
mov ecx, [edx + Image.Height] |
| 449 |
imul eax, ecx |
477 |
imul eax, ecx |
| 450 |
cmp esi, eax |
478 |
sub edi, eax |
| 451 |
jb .ret |
479 |
jb .ret |
| 452 |
mov esi, [ebx + bmp.Header.info.Size] |
480 |
mov [img.decode.bmp.length_rest], edi |
| - |
|
481 |
push esi |
| 453 |
add esi, sizeof.bmp.FileHeader |
482 |
sub esi, ebx |
| 454 |
jc .ret |
483 |
jc .ret.pop |
| 455 |
mov eax, [ebx + bmp.Header.file.OffBits] |
484 |
sub esi, [ebx + bmp.InfoHeader.Size] |
| 456 |
sub eax, esi |
- |
|
| 457 |
jc .ret |
485 |
jc .ret.pop |
| 458 |
push edi |
486 |
mov eax, esi |
| 459 |
mov edi, [edx + Image.Palette] |
487 |
mov edi, [edx + Image.Palette] |
| 460 |
push ecx |
488 |
push ecx |
| 461 |
mov ecx, 256 |
489 |
mov ecx, 256 |
| 462 |
cmp esi, sizeof.bmp.FileHeader + 12 |
490 |
mov esi, [ebx + bmp.InfoHeader.Size] |
| - |
|
491 |
cmp esi, 12 |
| 463 |
jz .old |
492 |
jz .old |
| 464 |
shr eax, 2 |
493 |
shr eax, 2 |
| 465 |
add esi, ebx |
494 |
add esi, ebx |
| 466 |
cmp ecx, eax |
495 |
cmp ecx, eax |
| 467 |
jb @f |
496 |
jb @f |
| 468 |
mov ecx, eax |
497 |
mov ecx, eax |
| 469 |
@@: |
498 |
@@: |
| 470 |
rep movsd |
499 |
rep movsd |
| 471 |
jmp .common |
500 |
jmp .common |
| 472 |
.old: |
501 |
.old: |
| - |
|
502 |
add esi, ebx |
| - |
|
503 |
@@: |
| 473 |
movsd |
504 |
movsd |
| 474 |
dec esi |
505 |
dec esi |
| 475 |
sub eax, 3 |
506 |
sub eax, 3 |
| 476 |
jbe @f |
507 |
jbe @f |
| 477 |
sub ecx, 1 |
508 |
sub ecx, 1 |
| 478 |
jnz .old |
509 |
jnz @b |
| 479 |
@@: |
510 |
@@: |
| 480 |
.common: |
511 |
.common: |
| 481 |
pop ecx |
512 |
pop ecx |
| - |
|
513 |
mov edi, [edx + Image.Data] |
| - |
|
514 |
clc |
| 482 |
pop edi |
515 |
.ret.pop: |
| 483 |
mov esi, ebx |
516 |
pop esi |
| 484 |
add esi, [ebx + bmp.Header.file.OffBits] |
- |
|
| 485 |
.ret: |
517 |
.ret: |
| 486 |
ret |
518 |
ret |
| 487 |
endp |
519 |
endp |
| 488 |
|
520 |
|
| 489 |
;;================================================================================================;; |
521 |
;;================================================================================================;; |
| 490 |
proc img.decode.bmp._.rle ;///////////////////////////////////////////////////////////////////////;; |
522 |
proc img.decode.bmp._.rle ;///////////////////////////////////////////////////////////////////////;; |
| 491 |
;;------------------------------------------------------------------------------------------------;; |
523 |
;;------------------------------------------------------------------------------------------------;; |
| 492 |
;? --- TBD --- ;; |
524 |
;? --- TBD --- ;; |
| 493 |
;;------------------------------------------------------------------------------------------------;; |
525 |
;;------------------------------------------------------------------------------------------------;; |
| 494 |
;> ebx = raw image data ;; |
526 |
;> ebx = raw image data ;; |
| 495 |
;> edx = image data ;; |
527 |
;> edx = image data ;; |
| 496 |
;;------------------------------------------------------------------------------------------------;; |
528 |
;;------------------------------------------------------------------------------------------------;; |
| 497 |
;< --- TBD --- ;; |
529 |
;< --- TBD --- ;; |
| 498 |
;;================================================================================================;; |
530 |
;;================================================================================================;; |
| 499 |
locals |
531 |
locals |
| 500 |
scanline_len dd ? |
532 |
scanline_len dd ? |
| 501 |
marker_x dd ? |
533 |
marker_x dd ? |
| 502 |
marker_y dd ? |
534 |
marker_y dd ? |
| 503 |
abs_mode_addr dd ? |
535 |
abs_mode_addr dd ? |
| 504 |
enc_mode_addr dd ? |
536 |
enc_mode_addr dd ? |
| 505 |
height dd ? |
537 |
height dd ? |
| 506 |
endl |
538 |
endl |
| 507 |
|
539 |
|
| 508 |
mov [abs_mode_addr], .absolute_mode.rle8 |
540 |
mov [abs_mode_addr], .absolute_mode.rle8 |
| 509 |
mov [enc_mode_addr], .encoded_mode.rle8 |
541 |
mov [enc_mode_addr], .encoded_mode.rle8 |
| 510 |
cmp [ebx + bmp.Header.info.Compression], bmp.BI_RLE4 |
542 |
cmp [ebx + bmp.InfoHeader.Compression], bmp.BI_RLE4 |
| 511 |
jne @f |
543 |
jne @f |
| 512 |
mov [abs_mode_addr], .absolute_mode.rle4 |
544 |
mov [abs_mode_addr], .absolute_mode.rle4 |
| 513 |
mov [enc_mode_addr], .encoded_mode.rle4 |
545 |
mov [enc_mode_addr], .encoded_mode.rle4 |
| 514 |
@@: |
546 |
@@: |
| 515 |
|
547 |
|
| 516 |
push esi |
548 |
push edi |
| - |
|
549 |
xor eax, eax ; do not check file size in .prepare_palette |
| - |
|
550 |
push ebp |
| 517 |
xor eax, eax ; do not check file size in .prepare_palette |
551 |
mov ebp, [ebp] ; set parent stack frame |
| - |
|
552 |
call img.decode.bmp._.rgb.prepare_palette |
| 518 |
call img.decode.bmp._.rgb.prepare_palette |
553 |
pop ebp |
| 519 |
pop ecx ; ecx = rest bytes in file |
554 |
pop ecx ; ecx = rest bytes in file |
| 520 |
jc .error |
555 |
jc .error |
| 521 |
|
556 |
|
| 522 |
mov eax, [edx + Image.Width] |
557 |
mov eax, [edx + Image.Width] |
| 523 |
mov [scanline_len], eax |
558 |
mov [scanline_len], eax |
| 524 |
mov eax, [edx + Image.Height] |
559 |
mov eax, [edx + Image.Height] |
| 525 |
mov [height], eax |
560 |
mov [height], eax |
| 526 |
xor eax, eax |
561 |
xor eax, eax |
| 527 |
mov [marker_x], eax |
562 |
mov [marker_x], eax |
| 528 |
mov [marker_y], eax |
563 |
mov [marker_y], eax |
| 529 |
mov edi, [edx + Image.Data] |
564 |
mov edi, [edx + Image.Data] |
| 530 |
|
565 |
|
| 531 |
.next_run: |
566 |
.next_run: |
| 532 |
sub ecx, 1 |
567 |
sub ecx, 1 |
| 533 |
jc .eof |
568 |
jc .eof |
| 534 |
xor eax, eax |
569 |
xor eax, eax |
| 535 |
lodsb |
570 |
lodsb |
| 536 |
or al, al |
571 |
or al, al |
| 537 |
jz .escape_mode |
572 |
jz .escape_mode |
| 538 |
jmp [enc_mode_addr] |
573 |
jmp [enc_mode_addr] |
| 539 |
|
574 |
|
| 540 |
.escape_mode: |
575 |
.escape_mode: |
| 541 |
sub ecx, 1 |
576 |
sub ecx, 1 |
| 542 |
jc .eof |
577 |
jc .eof |
| 543 |
lodsb |
578 |
lodsb |
| 544 |
cmp al, 0 |
579 |
cmp al, 0 |
| 545 |
je .end_of_scanline |
580 |
je .end_of_scanline |
| 546 |
cmp al, 1 |
581 |
cmp al, 1 |
| 547 |
je .exit |
582 |
je .exit |
| 548 |
cmp al, 2 |
583 |
cmp al, 2 |
| 549 |
je .offset_marker |
584 |
je .offset_marker |
| 550 |
jmp [abs_mode_addr] |
585 |
jmp [abs_mode_addr] |
| 551 |
|
586 |
|
| 552 |
.end_of_scanline: ; 0 |
587 |
.end_of_scanline: ; 0 |
| 553 |
sub edi, [marker_x] |
588 |
sub edi, [marker_x] |
| 554 |
add edi, [scanline_len] |
589 |
add edi, [scanline_len] |
| 555 |
mov [marker_x], 0 |
590 |
mov [marker_x], 0 |
| 556 |
mov eax, [marker_y] |
591 |
mov eax, [marker_y] |
| 557 |
inc eax |
592 |
inc eax |
| 558 |
mov [marker_y], eax |
593 |
mov [marker_y], eax |
| 559 |
cmp eax, [height] |
594 |
cmp eax, [height] |
| 560 |
jb .next_run |
595 |
jb .next_run |
| 561 |
jmp .exit |
596 |
jmp .exit |
| 562 |
|
597 |
|
| 563 |
.offset_marker: ; 2: dx, dy |
598 |
.offset_marker: ; 2: dx, dy |
| 564 |
sub ecx, 2 |
599 |
sub ecx, 2 |
| 565 |
jc .eof |
600 |
jc .eof |
| 566 |
lodsb |
601 |
lodsb |
| 567 |
mov edx, [marker_x] |
602 |
mov edx, [marker_x] |
| 568 |
add edx, eax |
603 |
add edx, eax |
| 569 |
cmp edx, [scanline_len] |
604 |
cmp edx, [scanline_len] |
| 570 |
jae .exit |
605 |
jae .exit |
| 571 |
mov [marker_x], edx |
606 |
mov [marker_x], edx |
| 572 |
add edi, eax |
607 |
add edi, eax |
| 573 |
lodsb |
608 |
lodsb |
| 574 |
mov edx, [marker_y] |
609 |
mov edx, [marker_y] |
| 575 |
add edx, eax |
610 |
add edx, eax |
| 576 |
cmp edx, [height] |
611 |
cmp edx, [height] |
| 577 |
jae .exit |
612 |
jae .exit |
| 578 |
mov [marker_y], edx |
613 |
mov [marker_y], edx |
| 579 |
imul eax, [scanline_len] |
614 |
imul eax, [scanline_len] |
| 580 |
add edi, eax |
615 |
add edi, eax |
| 581 |
jmp .next_run |
616 |
jmp .next_run |
| 582 |
|
617 |
|
| 583 |
.encoded_mode.rle8: ; N: b1 * N |
618 |
.encoded_mode.rle8: ; N: b1 * N |
| 584 |
call .fix_marker |
619 |
call .fix_marker |
| 585 |
sub ecx, 1 |
620 |
sub ecx, 1 |
| 586 |
jc .eof |
621 |
jc .eof |
| 587 |
lodsb |
622 |
lodsb |
| 588 |
push ecx |
623 |
push ecx |
| 589 |
mov ecx, edx |
624 |
mov ecx, edx |
| 590 |
rep stosb |
625 |
rep stosb |
| 591 |
pop ecx |
626 |
pop ecx |
| 592 |
jmp .check_eoi |
627 |
jmp .check_eoi |
| 593 |
|
628 |
|
| 594 |
.absolute_mode.rle8: ; N: b1 .. bN |
629 |
.absolute_mode.rle8: ; N: b1 .. bN |
| 595 |
call .fix_marker |
630 |
call .fix_marker |
| 596 |
cmp ecx, edx |
631 |
cmp ecx, edx |
| 597 |
jae @f |
632 |
jae @f |
| 598 |
mov edx, ecx |
633 |
mov edx, ecx |
| 599 |
@@: |
634 |
@@: |
| 600 |
push ecx |
635 |
push ecx |
| 601 |
mov ecx, edx |
636 |
mov ecx, edx |
| 602 |
rep movsb |
637 |
rep movsb |
| 603 |
pop ecx |
638 |
pop ecx |
| 604 |
sub ecx, edx |
639 |
sub ecx, edx |
| 605 |
jz .eof |
640 |
jz .eof |
| 606 |
test edx, 1 |
641 |
test edx, 1 |
| 607 |
jz .check_eoi |
642 |
jz .check_eoi |
| 608 |
sub ecx, 1 |
643 |
sub ecx, 1 |
| 609 |
jc .eof |
644 |
jc .eof |
| 610 |
inc esi |
645 |
inc esi |
| 611 |
.check_eoi: |
646 |
.check_eoi: |
| 612 |
mov eax, [marker_y] |
647 |
mov eax, [marker_y] |
| 613 |
cmp eax, [height] |
648 |
cmp eax, [height] |
| 614 |
jb .next_run |
649 |
jb .next_run |
| 615 |
jmp .exit |
650 |
jmp .exit |
| 616 |
|
651 |
|
| 617 |
.encoded_mode.rle4: ; N: b1 * N |
652 |
.encoded_mode.rle4: ; N: b1 * N |
| 618 |
call .fix_marker |
653 |
call .fix_marker |
| 619 |
sub ecx, 1 |
654 |
sub ecx, 1 |
| 620 |
jc .eof |
655 |
jc .eof |
| 621 |
movzx eax, byte [esi] |
656 |
movzx eax, byte [esi] |
| 622 |
inc esi |
657 |
inc esi |
| 623 |
push ecx |
658 |
push ecx |
| 624 |
mov ecx, eax |
659 |
mov ecx, eax |
| 625 |
and eax, 0xF |
660 |
and eax, 0xF |
| 626 |
shr ecx, 4 |
661 |
shr ecx, 4 |
| 627 |
@@: |
662 |
@@: |
| 628 |
dec edx |
663 |
dec edx |
| 629 |
js @f |
664 |
js @f |
| 630 |
mov [edi], cl |
665 |
mov [edi], cl |
| 631 |
dec edx |
666 |
dec edx |
| 632 |
js @f |
667 |
js @f |
| 633 |
mov [edi+1], al |
668 |
mov [edi+1], al |
| 634 |
add edi, 2 |
669 |
add edi, 2 |
| 635 |
jmp @b |
670 |
jmp @b |
| 636 |
@@: |
671 |
@@: |
| 637 |
pop ecx |
672 |
pop ecx |
| 638 |
jmp .check_eoi |
673 |
jmp .check_eoi |
| 639 |
|
674 |
|
| 640 |
.absolute_mode.rle4: ; N: b1 .. bN |
675 |
.absolute_mode.rle4: ; N: b1 .. bN |
| 641 |
call .fix_marker |
676 |
call .fix_marker |
| 642 |
lea eax, [edx+1] |
677 |
lea eax, [edx+1] |
| 643 |
shr eax, 1 |
678 |
shr eax, 1 |
| 644 |
cmp ecx, eax |
679 |
cmp ecx, eax |
| 645 |
jbe @f |
680 |
jbe @f |
| 646 |
lea edx, [ecx*2] |
681 |
lea edx, [ecx*2] |
| 647 |
@@: |
682 |
@@: |
| 648 |
push ecx edx |
683 |
push ecx edx |
| 649 |
@@: dec edx |
684 |
@@: dec edx |
| 650 |
js @f |
685 |
js @f |
| 651 |
lodsb |
686 |
lodsb |
| 652 |
mov cl, al |
687 |
mov cl, al |
| 653 |
shr al, 4 |
688 |
shr al, 4 |
| 654 |
and cl, 0xF |
689 |
and cl, 0xF |
| 655 |
stosb |
690 |
stosb |
| 656 |
dec edx |
691 |
dec edx |
| 657 |
js @f |
692 |
js @f |
| 658 |
mov [edi], cl |
693 |
mov [edi], cl |
| 659 |
inc edi |
694 |
inc edi |
| 660 |
jmp @b |
695 |
jmp @b |
| 661 |
@@: pop eax ecx |
696 |
@@: pop eax ecx |
| 662 |
and eax, 0x03 |
697 |
and eax, 0x03 |
| 663 |
jp .check_eoi |
698 |
jp .check_eoi |
| 664 |
sub ecx, 1 |
699 |
sub ecx, 1 |
| 665 |
jc .eof |
700 |
jc .eof |
| 666 |
inc esi |
701 |
inc esi |
| 667 |
jmp .check_eoi |
702 |
jmp .check_eoi |
| 668 |
|
703 |
|
| 669 |
.fix_marker: |
704 |
.fix_marker: |
| 670 |
mov edx, eax |
705 |
mov edx, eax |
| 671 |
add eax, [marker_x] |
706 |
add eax, [marker_x] |
| 672 |
mov [marker_x], eax |
707 |
mov [marker_x], eax |
| 673 |
@@: |
708 |
@@: |
| 674 |
sub eax, [scanline_len] |
709 |
sub eax, [scanline_len] |
| 675 |
jle @f |
710 |
jle @f |
| 676 |
mov [marker_x], eax |
711 |
mov [marker_x], eax |
| 677 |
push eax |
712 |
push eax |
| 678 |
mov eax, [marker_y] |
713 |
mov eax, [marker_y] |
| 679 |
inc eax |
714 |
inc eax |
| 680 |
mov [marker_y], eax |
715 |
mov [marker_y], eax |
| 681 |
cmp eax, [height] |
716 |
cmp eax, [height] |
| 682 |
pop eax |
717 |
pop eax |
| 683 |
jb @b |
718 |
jb @b |
| 684 |
sub edx, eax |
719 |
sub edx, eax |
| 685 |
@@: |
720 |
@@: |
| 686 |
retn |
721 |
retn |
| 687 |
|
722 |
|
| 688 |
.exit: |
723 |
.exit: |
| 689 |
.eof: |
724 |
.eof: |
| 690 |
xor eax, eax |
725 |
xor eax, eax |
| 691 |
ret |
726 |
ret |
| 692 |
|
727 |
|
| 693 |
.error: |
728 |
.error: |
| 694 |
or eax, -1 |
729 |
or eax, -1 |
| 695 |
ret |
730 |
ret |
| 696 |
endp |
731 |
endp |
| 697 |
|
732 |
|
| 698 |
;;================================================================================================;; |
733 |
;;================================================================================================;; |
| 699 |
proc img.decode.bmp._.bitfields ;/////////////////////////////////////////////////////////////////;; |
734 |
proc img.decode.bmp._.bitfields ;/////////////////////////////////////////////////////////////////;; |
| 700 |
;;------------------------------------------------------------------------------------------------;; |
735 |
;;------------------------------------------------------------------------------------------------;; |
| 701 |
;? --- TBD --- ;; |
736 |
;? --- TBD --- ;; |
| 702 |
;;------------------------------------------------------------------------------------------------;; |
737 |
;;------------------------------------------------------------------------------------------------;; |
| 703 |
;> ebx = raw image data ;; |
738 |
;> ebx = raw image data ;; |
| 704 |
;> edx = image data ;; |
739 |
;> edx = image data ;; |
| 705 |
;;------------------------------------------------------------------------------------------------;; |
740 |
;;------------------------------------------------------------------------------------------------;; |
| 706 |
;< --- TBD --- ;; |
741 |
;< --- TBD --- ;; |
| 707 |
;;================================================================================================;; |
742 |
;;================================================================================================;; |
| 708 |
locals |
743 |
locals |
| 709 |
shift bmp.RgbByteQuad |
744 |
shift bmp.RgbByteQuad |
| 710 |
unshift bmp.RgbByteQuad |
745 |
unshift bmp.RgbByteQuad |
| 711 |
mask bmp.RgbQuad |
746 |
mask bmp.RgbQuad |
| 712 |
delta dd ? |
747 |
delta dd ? |
| 713 |
endl |
748 |
endl |
| 714 |
|
- |
|
| 715 |
push edi |
- |
|
| 716 |
|
749 |
|
| 717 |
mov [delta], 4 |
750 |
mov [delta], 4 |
| 718 |
mov eax, [edx + Image.Extended] |
751 |
mov eax, [edx + Image.Extended] |
| 719 |
cmp [eax + bmp.Image.info.BitCount], 32 |
752 |
cmp [eax + bmp.Image.info.BitCount], 32 |
| 720 |
je @f |
753 |
je @f |
| 721 |
cmp [eax + bmp.Image.info.BitCount], 16 |
754 |
cmp [eax + bmp.Image.info.BitCount], 16 |
| 722 |
jne .error |
755 |
jne .error |
| 723 |
mov [delta], 2 |
756 |
mov [delta], 2 |
| 724 |
@@: |
757 |
@@: |
| 725 |
mov ecx, [edx + Image.Width] |
758 |
mov ecx, [edx + Image.Width] |
| 726 |
imul ecx, [edx + Image.Height] |
759 |
imul ecx, [edx + Image.Height] |
| 727 |
imul ecx, [delta] |
760 |
imul ecx, [delta] |
| 728 |
cmp esi, ecx |
761 |
sub edi, ecx |
| 729 |
jb .error |
762 |
jb .error |
| - |
|
763 |
mov ecx, [ebp] ; use parent stack frame |
| - |
|
764 |
mov [ecx + img.decode.bmp.length_rest - ebp], edi ; ! |
| - |
|
765 |
|
| 730 |
|
766 |
push esi |
| 731 |
mov esi, eax |
767 |
mov esi, eax |
| 732 |
|
768 |
|
| 733 |
mov ecx, [esi + bmp.Image.info.RedMask] |
769 |
mov ecx, [esi + bmp.Image.info.RedMask] |
| 734 |
call .calc_shift |
770 |
call .calc_shift |
| 735 |
mov [shift.Red], al |
771 |
mov [shift.Red], al |
| 736 |
mov [mask.Red], ecx |
772 |
mov [mask.Red], ecx |
| 737 |
call .calc_unshift |
773 |
call .calc_unshift |
| 738 |
mov [unshift.Red], al |
774 |
mov [unshift.Red], al |
| 739 |
mov ecx, [esi + bmp.Image.info.GreenMask] |
775 |
mov ecx, [esi + bmp.Image.info.GreenMask] |
| 740 |
call .calc_shift |
776 |
call .calc_shift |
| 741 |
mov [shift.Green], al |
777 |
mov [shift.Green], al |
| 742 |
mov [unshift.Green], al |
778 |
mov [unshift.Green], al |
| 743 |
mov [mask.Green], ecx |
779 |
mov [mask.Green], ecx |
| 744 |
call .calc_unshift |
780 |
call .calc_unshift |
| 745 |
mov [unshift.Green], al |
781 |
mov [unshift.Green], al |
| 746 |
mov ecx, [esi + bmp.Image.info.BlueMask] |
782 |
mov ecx, [esi + bmp.Image.info.BlueMask] |
| 747 |
call .calc_shift |
783 |
call .calc_shift |
| 748 |
mov [shift.Blue], al |
784 |
mov [shift.Blue], al |
| 749 |
mov [unshift.Blue], al |
785 |
mov [unshift.Blue], al |
| 750 |
mov [mask.Blue], ecx |
786 |
mov [mask.Blue], ecx |
| 751 |
call .calc_unshift |
787 |
call .calc_unshift |
| 752 |
mov [unshift.Blue], al |
788 |
mov [unshift.Blue], al |
| 753 |
mov ecx, [esi + bmp.Image.info.AlphaMask] |
789 |
mov ecx, [esi + bmp.Image.info.AlphaMask] |
| 754 |
call .calc_shift |
790 |
call .calc_shift |
| 755 |
mov [shift.Alpha], al |
791 |
mov [shift.Alpha], al |
| 756 |
mov [unshift.Alpha], al |
792 |
mov [unshift.Alpha], al |
| 757 |
mov [mask.Alpha], ecx |
793 |
mov [mask.Alpha], ecx |
| 758 |
call .calc_unshift |
794 |
call .calc_unshift |
| 759 |
mov [unshift.Alpha], al |
795 |
mov [unshift.Alpha], al |
| 760 |
|
796 |
|
| 761 |
mov edi, [edx + Image.Data] |
797 |
mov edi, [edx + Image.Data] |
| 762 |
mov esi, ebx |
798 |
pop esi |
| 763 |
add esi, [ebx + bmp.Header.file.OffBits] |
- |
|
| 764 |
|
799 |
|
| 765 |
;;------------------------------------------------------------------------------------------------;; |
800 |
;;------------------------------------------------------------------------------------------------;; |
| 766 |
|
801 |
|
| 767 |
mov ecx, [edx + Image.Height] |
802 |
mov ecx, [edx + Image.Height] |
| 768 |
|
803 |
|
| 769 |
.next_line: |
804 |
.next_line: |
| 770 |
push ecx |
805 |
push ecx |
| 771 |
mov ecx, [edx + Image.Width] |
806 |
mov ecx, [edx + Image.Width] |
| 772 |
|
807 |
|
| 773 |
.next_pixel: |
808 |
.next_pixel: |
| 774 |
push ecx |
809 |
push ecx |
| 775 |
|
810 |
|
| 776 |
mov eax, [esi] |
811 |
mov eax, [esi] |
| 777 |
mov cl, [shift.Blue] |
812 |
mov cl, [shift.Blue] |
| 778 |
shr eax, cl |
813 |
shr eax, cl |
| 779 |
and eax, [mask.Blue] |
814 |
and eax, [mask.Blue] |
| 780 |
mov cl, [unshift.Blue] |
815 |
mov cl, [unshift.Blue] |
| 781 |
shl eax, cl |
816 |
shl eax, cl |
| 782 |
stosb |
817 |
stosb |
| 783 |
|
818 |
|
| 784 |
mov eax, [esi] |
819 |
mov eax, [esi] |
| 785 |
mov cl, [shift.Green] |
820 |
mov cl, [shift.Green] |
| 786 |
shr eax, cl |
821 |
shr eax, cl |
| 787 |
and eax, [mask.Green] |
822 |
and eax, [mask.Green] |
| 788 |
mov cl, [unshift.Green] |
823 |
mov cl, [unshift.Green] |
| 789 |
shl eax, cl |
824 |
shl eax, cl |
| 790 |
stosb |
825 |
stosb |
| 791 |
|
826 |
|
| 792 |
mov eax, [esi] |
827 |
mov eax, [esi] |
| 793 |
mov cl, [shift.Red] |
828 |
mov cl, [shift.Red] |
| 794 |
shr eax, cl |
829 |
shr eax, cl |
| 795 |
and eax, [mask.Red] |
830 |
and eax, [mask.Red] |
| 796 |
mov cl, [unshift.Red] |
831 |
mov cl, [unshift.Red] |
| 797 |
shl eax, cl |
832 |
shl eax, cl |
| 798 |
stosb |
833 |
stosb |
| 799 |
|
834 |
|
| 800 |
mov eax, [esi] |
835 |
mov eax, [esi] |
| 801 |
mov cl, [shift.Alpha] |
836 |
mov cl, [shift.Alpha] |
| 802 |
shr eax, cl |
837 |
shr eax, cl |
| 803 |
and eax, [mask.Alpha] |
838 |
and eax, [mask.Alpha] |
| 804 |
mov cl, [unshift.Alpha] |
839 |
mov cl, [unshift.Alpha] |
| 805 |
shl eax, cl |
840 |
shl eax, cl |
| 806 |
stosb |
841 |
stosb |
| 807 |
|
842 |
|
| 808 |
add esi, [delta] |
843 |
add esi, [delta] |
| 809 |
|
844 |
|
| 810 |
pop ecx |
845 |
pop ecx |
| 811 |
dec ecx |
846 |
dec ecx |
| 812 |
jnz .next_pixel |
847 |
jnz .next_pixel |
| 813 |
|
848 |
|
| 814 |
pop ecx |
849 |
pop ecx |
| 815 |
dec ecx |
850 |
dec ecx |
| 816 |
jnz .next_line |
851 |
jnz .next_line |
| 817 |
|
852 |
|
| 818 |
;;------------------------------------------------------------------------------------------------;; |
853 |
;;------------------------------------------------------------------------------------------------;; |
| 819 |
|
854 |
|
| 820 |
.exit: |
855 |
.exit: |
| 821 |
xor eax, eax |
856 |
xor eax, eax |
| 822 |
pop edi |
857 |
pop edi |
| 823 |
ret |
858 |
ret |
| 824 |
|
859 |
|
| 825 |
.error: |
860 |
.error: |
| 826 |
or eax, -1 |
861 |
or eax, -1 |
| 827 |
pop edi |
862 |
pop edi |
| 828 |
ret |
863 |
ret |
| 829 |
|
864 |
|
| 830 |
.calc_shift: |
865 |
.calc_shift: |
| 831 |
xor eax, eax |
866 |
xor eax, eax |
| 832 |
or ecx, ecx |
867 |
or ecx, ecx |
| 833 |
jnz @f |
868 |
jnz @f |
| 834 |
retn |
869 |
retn |
| 835 |
@@: test ecx, 1 |
870 |
@@: test ecx, 1 |
| 836 |
jnz @f |
871 |
jnz @f |
| 837 |
.zz: shr ecx, 1 |
872 |
.zz: shr ecx, 1 |
| 838 |
inc eax |
873 |
inc eax |
| 839 |
jmp @b |
874 |
jmp @b |
| 840 |
@@: test ecx, 0100000000b |
875 |
@@: test ecx, 0100000000b |
| 841 |
jnz .zz |
876 |
jnz .zz |
| 842 |
retn |
877 |
retn |
| 843 |
.calc_unshift: |
878 |
.calc_unshift: |
| 844 |
xor eax, eax |
879 |
xor eax, eax |
| 845 |
or ecx, ecx |
880 |
or ecx, ecx |
| 846 |
jnz @f |
881 |
jnz @f |
| 847 |
retn |
882 |
retn |
| 848 |
@@: test ecx, 1 |
883 |
@@: test ecx, 1 |
| 849 |
jz @f |
884 |
jz @f |
| 850 |
shr ecx, 1 |
885 |
shr ecx, 1 |
| 851 |
inc eax |
886 |
inc eax |
| 852 |
jmp @b |
887 |
jmp @b |
| 853 |
@@: sub eax, 8 |
888 |
@@: sub eax, 8 |
| 854 |
neg eax |
889 |
neg eax |
| 855 |
retn |
890 |
retn |
| 856 |
endp |
891 |
endp |
| 857 |
|
892 |
|
| 858 |
if 0 |
893 |
if 0 |
| 859 |
;;================================================================================================;; |
894 |
;;================================================================================================;; |
| 860 |
proc img.decode.bmp._.jpeg ;//////////////////////////////////////////////////////////////////////;; |
895 |
proc img.decode.bmp._.jpeg ;//////////////////////////////////////////////////////////////////////;; |
| 861 |
;;------------------------------------------------------------------------------------------------;; |
896 |
;;------------------------------------------------------------------------------------------------;; |
| 862 |
;? --- TBD --- ;; |
897 |
;? --- TBD --- ;; |
| 863 |
;;------------------------------------------------------------------------------------------------;; |
898 |
;;------------------------------------------------------------------------------------------------;; |
| 864 |
;> ebx = raw image data ;; |
899 |
;> ebx = raw image data ;; |
| 865 |
;> edx = image data ;; |
900 |
;> edx = image data ;; |
| 866 |
;;------------------------------------------------------------------------------------------------;; |
901 |
;;------------------------------------------------------------------------------------------------;; |
| 867 |
;< --- TBD --- ;; |
902 |
;< --- TBD --- ;; |
| 868 |
;;================================================================================================;; |
903 |
;;================================================================================================;; |
| 869 |
xor eax, eax |
904 |
xor eax, eax |
| 870 |
ret |
905 |
ret |
| 871 |
endp |
906 |
endp |
| 872 |
|
907 |
|
| 873 |
;;================================================================================================;; |
908 |
;;================================================================================================;; |
| 874 |
proc img.decode.bmp._.png ;///////////////////////////////////////////////////////////////////////;; |
909 |
proc img.decode.bmp._.png ;///////////////////////////////////////////////////////////////////////;; |
| 875 |
;;------------------------------------------------------------------------------------------------;; |
910 |
;;------------------------------------------------------------------------------------------------;; |
| 876 |
;? --- TBD --- ;; |
911 |
;? --- TBD --- ;; |
| 877 |
;;------------------------------------------------------------------------------------------------;; |
912 |
;;------------------------------------------------------------------------------------------------;; |
| 878 |
;> ebx = raw image data ;; |
913 |
;> ebx = raw image data ;; |
| 879 |
;> edx = image data ;; |
914 |
;> edx = image data ;; |
| 880 |
;;------------------------------------------------------------------------------------------------;; |
915 |
;;------------------------------------------------------------------------------------------------;; |
| 881 |
;< --- TBD --- ;; |
916 |
;< --- TBD --- ;; |
| 882 |
;;================================================================================================;; |
917 |
;;================================================================================================;; |
| 883 |
xor eax, eax |
918 |
xor eax, eax |
| 884 |
ret |
919 |
ret |
| 885 |
endp |
920 |
endp |
| 886 |
end if |
921 |
end if |
| 887 |
|
922 |
|
| 888 |
;;================================================================================================;; |
923 |
;;================================================================================================;; |
| 889 |
;;////////////////////////////////////////////////////////////////////////////////////////////////;; |
924 |
;;////////////////////////////////////////////////////////////////////////////////////////////////;; |
| 890 |
;;================================================================================================;; |
925 |
;;================================================================================================;; |
| 891 |
;! Below is private data you should never use directly from your code ;; |
926 |
;! Below is private data you should never use directly from your code ;; |
| 892 |
;;================================================================================================;; |
927 |
;;================================================================================================;; |
| 893 |
;;////////////////////////////////////////////////////////////////////////////////////////////////;; |
928 |
;;////////////////////////////////////////////////////////////////////////////////////////////////;; |
| 894 |
;;================================================================================================;; |
929 |
;;================================================================================================;; |
| 895 |
|
930 |
|
| 896 |
|
931 |
|
| 897 |
; |
932 |
; |