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Commit | Line | Data |
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ef416fc2 | 1 | //======================================================================== |
2 | // | |
3 | // SplashBitmap.cc | |
4 | // | |
5 | //======================================================================== | |
6 | ||
7 | #include <config.h> | |
8 | ||
9 | #ifdef USE_GCC_PRAGMAS | |
10 | #pragma implementation | |
11 | #endif | |
12 | ||
13 | #include <stdio.h> | |
14 | #include "gmem.h" | |
15 | #include "SplashErrorCodes.h" | |
16 | #include "SplashBitmap.h" | |
17 | ||
18 | //------------------------------------------------------------------------ | |
19 | // SplashBitmap | |
20 | //------------------------------------------------------------------------ | |
21 | ||
22 | SplashBitmap::SplashBitmap(int widthA, int heightA, int rowPad, | |
23 | SplashColorMode modeA, GBool topDown) { | |
24 | width = widthA; | |
25 | height = heightA; | |
26 | mode = modeA; | |
27 | switch (mode) { | |
28 | case splashModeMono1: | |
29 | rowSize = (width + 7) >> 3; | |
30 | break; | |
31 | case splashModeMono8: | |
32 | rowSize = width; | |
33 | break; | |
34 | case splashModeAMono8: | |
35 | rowSize = width * 2; | |
36 | break; | |
37 | case splashModeRGB8: | |
38 | case splashModeBGR8: | |
39 | rowSize = width * 3; | |
40 | break; | |
41 | case splashModeARGB8: | |
42 | case splashModeBGRA8: | |
43 | #if SPLASH_CMYK | |
44 | case splashModeCMYK8: | |
45 | #endif | |
46 | rowSize = width * 4; | |
47 | break; | |
48 | #if SPLASH_CMYK | |
49 | case splashModeACMYK8: | |
50 | rowSize = width * 5; | |
51 | break; | |
52 | #endif | |
53 | } | |
54 | rowSize += rowPad - 1; | |
55 | rowSize -= rowSize % rowPad; | |
56 | data = (SplashColorPtr)gmalloc(rowSize * height); | |
57 | if (!topDown) { | |
58 | data += (height - 1) * rowSize; | |
59 | rowSize = -rowSize; | |
60 | } | |
61 | } | |
62 | ||
63 | ||
64 | SplashBitmap::~SplashBitmap() { | |
65 | if (rowSize < 0) { | |
66 | gfree(data + (height - 1) * rowSize); | |
67 | } else { | |
68 | gfree(data); | |
69 | } | |
70 | } | |
71 | ||
72 | SplashError SplashBitmap::writePNMFile(char *fileName) { | |
73 | FILE *f; | |
74 | SplashColorPtr row, p; | |
75 | int x, y; | |
76 | ||
77 | if (!(f = fopen(fileName, "wb"))) { | |
78 | return splashErrOpenFile; | |
79 | } | |
80 | ||
81 | switch (mode) { | |
82 | ||
83 | case splashModeMono1: | |
84 | fprintf(f, "P4\n%d %d\n", width, height); | |
85 | row = data; | |
86 | for (y = 0; y < height; ++y) { | |
87 | p = row; | |
88 | for (x = 0; x < width; x += 8) { | |
89 | fputc(*p ^ 0xff, f); | |
90 | ++p; | |
91 | } | |
92 | row += rowSize; | |
93 | } | |
94 | break; | |
95 | ||
96 | case splashModeMono8: | |
97 | fprintf(f, "P5\n%d %d\n255\n", width, height); | |
98 | row = data; | |
99 | for (y = 0; y < height; ++y) { | |
100 | p = row; | |
101 | for (x = 0; x < width; ++x) { | |
102 | fputc(*p, f); | |
103 | ++p; | |
104 | } | |
105 | row += rowSize; | |
106 | } | |
107 | break; | |
108 | ||
109 | case splashModeAMono8: | |
110 | fprintf(f, "P5\n%d %d\n255\n", width, height); | |
111 | row = data; | |
112 | for (y = 0; y < height; ++y) { | |
113 | p = row; | |
114 | for (x = 0; x < width; ++x) { | |
115 | fputc(splashAMono8M(p), f); | |
116 | p += 2; | |
117 | } | |
118 | row += rowSize; | |
119 | } | |
120 | break; | |
121 | ||
122 | case splashModeRGB8: | |
123 | fprintf(f, "P6\n%d %d\n255\n", width, height); | |
124 | row = data; | |
125 | for (y = 0; y < height; ++y) { | |
126 | p = row; | |
127 | for (x = 0; x < width; ++x) { | |
128 | fputc(splashRGB8R(p), f); | |
129 | fputc(splashRGB8G(p), f); | |
130 | fputc(splashRGB8B(p), f); | |
131 | p += 3; | |
132 | } | |
133 | row += rowSize; | |
134 | } | |
135 | break; | |
136 | ||
137 | case splashModeBGR8: | |
138 | fprintf(f, "P6\n%d %d\n255\n", width, height); | |
139 | row = data; | |
140 | for (y = 0; y < height; ++y) { | |
141 | p = row; | |
142 | for (x = 0; x < width; ++x) { | |
143 | fputc(splashBGR8R(p), f); | |
144 | fputc(splashBGR8G(p), f); | |
145 | fputc(splashBGR8B(p), f); | |
146 | p += 3; | |
147 | } | |
148 | row += rowSize; | |
149 | } | |
150 | break; | |
151 | ||
152 | case splashModeARGB8: | |
153 | fprintf(f, "P6\n%d %d\n255\n", width, height); | |
154 | row = data; | |
155 | for (y = 0; y < height; ++y) { | |
156 | p = row; | |
157 | for (x = 0; x < width; ++x) { | |
158 | fputc(splashARGB8R(p), f); | |
159 | fputc(splashARGB8G(p), f); | |
160 | fputc(splashARGB8B(p), f); | |
161 | p += 4; | |
162 | } | |
163 | row += rowSize; | |
164 | } | |
165 | break; | |
166 | ||
167 | case splashModeBGRA8: | |
168 | fprintf(f, "P6\n%d %d\n255\n", width, height); | |
169 | row = data; | |
170 | for (y = 0; y < height; ++y) { | |
171 | p = row; | |
172 | for (x = 0; x < width; ++x) { | |
173 | fputc(splashBGRA8R(p), f); | |
174 | fputc(splashBGRA8G(p), f); | |
175 | fputc(splashBGRA8B(p), f); | |
176 | p += 4; | |
177 | } | |
178 | row += rowSize; | |
179 | } | |
180 | break; | |
181 | ||
182 | #if SPLASH_CMYK | |
183 | case splashModeCMYK8: | |
184 | case splashModeACMYK8: | |
185 | // PNM doesn't support CMYK | |
186 | break; | |
187 | #endif | |
188 | } | |
189 | ||
190 | fclose(f); | |
191 | return splashOk; | |
192 | } | |
193 | ||
194 | void SplashBitmap::getPixel(int x, int y, SplashColorPtr pixel) { | |
195 | SplashColorPtr p; | |
196 | ||
197 | if (y < 0 || y >= height || x < 0 || x >= width) { | |
198 | return; | |
199 | } | |
200 | switch (mode) { | |
201 | case splashModeMono1: | |
202 | p = &data[y * rowSize + (x >> 3)]; | |
203 | pixel[0] = (p[0] >> (7 - (x & 7))) & 1; | |
204 | break; | |
205 | case splashModeMono8: | |
206 | p = &data[y * rowSize + x]; | |
207 | pixel[0] = p[0]; | |
208 | break; | |
209 | case splashModeAMono8: | |
210 | p = &data[y * rowSize + 2 * x]; | |
211 | pixel[0] = p[0]; | |
212 | pixel[1] = p[1]; | |
213 | break; | |
214 | case splashModeRGB8: | |
215 | case splashModeBGR8: | |
216 | p = &data[y * rowSize + 3 * x]; | |
217 | pixel[0] = p[0]; | |
218 | pixel[1] = p[1]; | |
219 | pixel[2] = p[2]; | |
220 | break; | |
221 | case splashModeARGB8: | |
222 | case splashModeBGRA8: | |
223 | #if SPLASH_CMYK | |
224 | case splashModeCMYK8: | |
225 | #endif | |
226 | p = &data[y * rowSize + 4 * x]; | |
227 | pixel[0] = p[0]; | |
228 | pixel[1] = p[1]; | |
229 | pixel[2] = p[2]; | |
230 | pixel[3] = p[3]; | |
231 | break; | |
232 | #if SPLASH_CMYK | |
233 | case splashModeACMYK8: | |
234 | p = &data[y * rowSize + 5 * x]; | |
235 | pixel[0] = p[0]; | |
236 | pixel[1] = p[1]; | |
237 | pixel[2] = p[2]; | |
238 | pixel[3] = p[3]; | |
239 | pixel[4] = p[4]; | |
240 | break; | |
241 | #endif | |
242 | } | |
243 | } |