summaryrefslogtreecommitdiff
path: root/src/resources/dyepalette.cpp
blob: 4c62abd1c67d400c8a7f9afe921eb4ae4ce05083 (plain) (blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
/*
 *  The ManaPlus Client
 *  Copyright (C) 2007-2009  The Mana World Development Team
 *  Copyright (C) 2009-2010  The Mana Developers
 *  Copyright (C) 2011-2014  The ManaPlus Developers
 *
 *  This file is part of The ManaPlus Client.
 *
 *  This program is free software; you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation; either version 2 of the License, or
 *  any later version.
 *
 *  This program is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *  GNU General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public License
 *  along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */

#include "resources/dyepalette.h"

#include "logger.h"

#include "resources/db/palettedb.h"

#include <cmath>

#include <SDL_endian.h>

#include "debug.h"

DyePalette::DyePalette(const std::string &description,
                       const uint8_t blockSize) :
    mColors()
{
    const size_t size = static_cast<size_t>(description.length());
    if (size == 0)
        return;

    if (description[0] == '#')
    {
        size_t pos = 1;
        for ( ; ; )
        {
            if (pos + blockSize > size)
                break;

            DyeColor color(0, 0, 0, 0);

            for (size_t i = 0, colorIdx = 0; i < blockSize && colorIdx < 4;
                 i += 2, colorIdx ++)
            {
                color.value[colorIdx] = static_cast<unsigned char>((
                    hexDecode(description[pos + i]) << 4)
                    + hexDecode(description[pos + i + 1]));
            }
            mColors.push_back(color);
            pos += blockSize;

            if (pos == size)
                return;
            if (description[pos] != ',')
                break;

            ++pos;
        }
    }
    else if (description[0] == '@')
    {
        size_t pos = 1;
        for ( ; pos < size ; )
        {
            const size_t idx = description.find(',', pos);
            if (idx == std::string::npos)
                return;
            if (idx == pos)
                break;
            mColors.push_back(PaletteDB::getColor(
                description.substr(pos, idx - pos)));
            pos = idx + 1;
        }
    }

    logger->log("Error, invalid embedded palette: %s", description.c_str());
}

unsigned int DyePalette::hexDecode(const signed char c)
{
    if ('0' <= c && c <= '9')
        return c - '0';
    else if ('A' <= c && c <= 'F')
        return c - 'A' + 10;
    else if ('a' <= c && c <= 'f')
        return c - 'a' + 10;
    else
        return 0;
}

void DyePalette::getColor(const int intensity, int color[3]) const
{
    if (intensity == 0)
    {
        color[0] = 0;
        color[1] = 0;
        color[2] = 0;
        return;
    }

    const int last = static_cast<int>(mColors.size());
    if (last == 0)
        return;

    const int intLast = intensity * last;
    const int i = intLast / 255;
    const int t = intLast % 255;

    int j = t != 0 ? i : i - 1;

    if (j >= last)
        j = 0;

    // Get the exact color if any, the next color otherwise.
    const int r2 = mColors[j].value[0];
    const int g2 = mColors[j].value[1];
    const int b2 = mColors[j].value[2];

    if (t == 0)
    {
        // Exact color.
        color[0] = r2;
        color[1] = g2;
        color[2] = b2;
        return;
    }

    // Get the previous color. First color is implicitly black.
    int r1 = 0, g1 = 0, b1 = 0;
    if (i > 0 && i < last + 1)
    {
        r1 = mColors[i - 1].value[0];
        g1 = mColors[i - 1].value[1];
        b1 = mColors[i - 1].value[2];
    }

    // Perform a linear interpolation.
    color[0] = ((255 - t) * r1 + t * r2) / 255;
    color[1] = ((255 - t) * g1 + t * g2) / 255;
    color[2] = ((255 - t) * b1 + t * b2) / 255;
}

void DyePalette::getColor(double intensity, int color[3]) const
{
    // Nothing to do here
    if (mColors.empty())
        return;

    // Force range
    if (intensity > 1.0)
        intensity = 1.0;
    else if (intensity < 0.0)
        intensity = 0.0;

    // Scale up
    intensity *= static_cast<double>(mColors.size() - 1);

    // Color indices
    const int i = static_cast<int>(floor(intensity));
    const int j = static_cast<int>(ceil(intensity));

    if (i == j)
    {
        // Exact color.
        color[0] = mColors[i].value[0];
        color[1] = mColors[i].value[1];
        color[2] = mColors[i].value[2];
        return;
    }

    intensity -= i;
    const double rest = 1 - intensity;

    // Get the colors
    const int r1 = mColors[i].value[0];
    const int g1 = mColors[i].value[1];
    const int b1 = mColors[i].value[2];
    const int r2 = mColors[j].value[0];
    const int g2 = mColors[j].value[1];
    const int b2 = mColors[j].value[2];

    // Perform the interpolation.
    color[0] = static_cast<int>(rest * r1 + intensity * r2);
    color[1] = static_cast<int>(rest * g1 + intensity * g2);
    color[2] = static_cast<int>(rest * b1 + intensity * b2);
}

void DyePalette::replaceSColor(uint32_t *restrict pixels,
                               const int bufSize) const
{
    std::vector<DyeColor>::const_iterator it_end = mColors.end();
    const size_t sz = mColors.size();
    if (!sz)
        return;
    if (sz % 2)
        -- it_end;

    for (uint32_t *p_end = pixels + static_cast<size_t>(bufSize);
         pixels != p_end;
         ++pixels)
    {
        uint8_t *const p = reinterpret_cast<uint8_t *>(pixels);
#if SDL_BYTEORDER == SDL_BIG_ENDIAN
        const int alpha = *pixels & 0xff000000;
        const unsigned int data = (*pixels) & 0x00ffffff;
#else
        const int alpha = *p & 0xff;
        const unsigned int data = (*pixels) & 0xffffff00;
#endif
//        logger->log("c:%04d   %08x", c, *pixels);
//        logger->log("data:    %08x", data);
        if (!alpha)
        {
//            logger->log("skip:    %08x", *pixels);
            continue;
        }

        std::vector<DyeColor>::const_iterator it = mColors.begin();
        while (it != it_end)
        {
            const DyeColor &col = *it;
            ++ it;
            const DyeColor &col2 = *it;

#if SDL_BYTEORDER == SDL_BIG_ENDIAN
            const unsigned int coldata = (col.value[2] << 16U)
                | (col.value[1] << 8U) | (col.value[0]);
#else
            const unsigned int coldata = (col.value[2] << 8U)
                | (col.value[1] << 16U) | (col.value[0] << 24U);
#endif
//            logger->log("coldata: %08x", coldata);
            if (data == coldata)
            {
//                logger->log("correct");
                p[3] = col2.value[0];
                p[2] = col2.value[1];
                p[1] = col2.value[2];
                break;
            }

            ++ it;
        }
    }
}

void DyePalette::replaceAColor(uint32_t *restrict pixels,
                               const int bufSize) const
{
    std::vector<DyeColor>::const_iterator it_end = mColors.end();
    const size_t sz = mColors.size();
    if (!sz)
        return;
    if (sz % 2)
        -- it_end;

    for (uint32_t *p_end = pixels + static_cast<size_t>(bufSize);
         pixels != p_end;
         ++pixels)
    {
        uint8_t *const p = reinterpret_cast<uint8_t *>(pixels);
        const unsigned int data = *pixels;

        std::vector<DyeColor>::const_iterator it = mColors.begin();
        while (it != it_end)
        {
            const DyeColor &col = *it;
            ++ it;
            const DyeColor &col2 = *it;

#if SDL_BYTEORDER == SDL_BIG_ENDIAN
            const unsigned int coldata = (col.value[3] << 24U)
                | (col.value[2] << 16U)
                | (col.value[1] << 8U)
                | (col.value[0]);
#else
            const unsigned int coldata = (col.value[3])
                | (col.value[2] << 8U)
                | (col.value[1] << 16U) |
                (col.value[0] << 24U);
#endif

            if (data == coldata)
            {
                p[3] = col2.value[0];
                p[2] = col2.value[1];
                p[1] = col2.value[2];
                p[0] = col2.value[3];
                break;
            }

            ++ it;
        }
    }
}

void DyePalette::replaceSOGLColor(uint32_t *restrict pixels,
                                  const int bufSize) const
{
    std::vector<DyeColor>::const_iterator it_end = mColors.end();
    const size_t sz = mColors.size();
    if (!sz)
        return;
    if (sz % 2)
        -- it_end;

    for (uint32_t *p_end = pixels + static_cast<size_t>(bufSize);
         pixels != p_end;
         ++pixels)
    {
        uint8_t *const p = reinterpret_cast<uint8_t *>(pixels);
#if SDL_BYTEORDER == SDL_BIG_ENDIAN
        const int alpha = *p & 0xff;
        const unsigned int data = (*pixels) & 0xffffff00;
#else
        const int alpha = *pixels & 0xff000000;
        const unsigned int data = (*pixels) & 0x00ffffff;
#endif
        if (!alpha)
            continue;

        std::vector<DyeColor>::const_iterator it = mColors.begin();
        while (it != it_end)
        {
            const DyeColor &col = *it;
            ++ it;
            const DyeColor &col2 = *it;

#if SDL_BYTEORDER == SDL_BIG_ENDIAN
            const unsigned int coldata = (col.value[0] << 24)
                | (col.value[1] << 16) | (col.value[2] << 8);
#else
            const unsigned int coldata = (col.value[0])
                | (col.value[1] << 8) | (col.value[2] << 16);
#endif
            if (data == coldata)
            {
                p[0] = col2.value[0];
                p[1] = col2.value[1];
                p[2] = col2.value[2];
                break;
            }

            ++ it;
        }
    }
}

void DyePalette::replaceAOGLColor(uint32_t *restrict pixels,
                                  const int bufSize) const
{
    std::vector<DyeColor>::const_iterator it_end = mColors.end();
    const size_t sz = mColors.size();
    if (!sz)
        return;
    if (sz % 2)
        -- it_end;

    for (uint32_t *p_end = pixels + static_cast<size_t>(bufSize);
         pixels != p_end;
         ++pixels)
    {
        uint8_t *const p = reinterpret_cast<uint8_t *>(pixels);
        const unsigned int data = *pixels;

        std::vector<DyeColor>::const_iterator it = mColors.begin();
        while (it != it_end)
        {
            const DyeColor &col = *it;
            ++ it;
            const DyeColor &col2 = *it;

#if SDL_BYTEORDER == SDL_BIG_ENDIAN
            const unsigned int coldata = (col.value[0] << 24U)
                | (col.value[1] << 16U)
                | (col.value[2] << 8U)
                | col.value[3];
#else
            const unsigned int coldata = (col.value[0])
                | (col.value[1] << 8U)
                | (col.value[2] << 16U)
                | (col.value[3] << 24U);
#endif
            if (data == coldata)
            {
                p[0] = col2.value[0];
                p[1] = col2.value[1];
                p[2] = col2.value[2];
                p[3] = col2.value[3];
                break;
            }

            ++ it;
        }
    }
}