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
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
|
/* sane - Scanner Access Now Easy.
Copyright (C) 2019 Povilas Kanapickas <povilas@radix.lt>
This file is part of the SANE package.
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 (at your option) 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 <https://www.gnu.org/licenses/>.
*/
#define DEBUG_DECLARE_ONLY
#include "image.h"
#include <array>
namespace genesys {
struct PixelFormatDesc
{
PixelFormat format;
unsigned depth;
unsigned channels;
ColorOrder order;
};
const PixelFormatDesc s_known_pixel_formats[] = {
{ PixelFormat::I1, 1, 1, ColorOrder::RGB },
{ PixelFormat::I8, 8, 1, ColorOrder::RGB },
{ PixelFormat::I16, 16, 1, ColorOrder::RGB },
{ PixelFormat::RGB111, 1, 3, ColorOrder::RGB },
{ PixelFormat::RGB888, 8, 3, ColorOrder::RGB },
{ PixelFormat::RGB161616, 16, 3, ColorOrder::RGB },
{ PixelFormat::BGR888, 8, 3, ColorOrder::BGR },
{ PixelFormat::BGR161616, 16, 3, ColorOrder::BGR },
};
ColorOrder get_pixel_format_color_order(PixelFormat format)
{
for (const auto& desc : s_known_pixel_formats) {
if (desc.format == format)
return desc.order;
}
throw SaneException("Unknown pixel format %d", static_cast<unsigned>(format));
}
unsigned get_pixel_format_depth(PixelFormat format)
{
for (const auto& desc : s_known_pixel_formats) {
if (desc.format == format)
return desc.depth;
}
throw SaneException("Unknown pixel format %d", static_cast<unsigned>(format));
}
unsigned get_pixel_channels(PixelFormat format)
{
for (const auto& desc : s_known_pixel_formats) {
if (desc.format == format)
return desc.channels;
}
throw SaneException("Unknown pixel format %d", static_cast<unsigned>(format));
}
std::size_t get_pixel_row_bytes(PixelFormat format, std::size_t width)
{
std::size_t depth = get_pixel_format_depth(format) * get_pixel_channels(format);
std::size_t total_bits = depth * width;
return total_bits / 8 + ((total_bits % 8 > 0) ? 1 : 0);
}
std::size_t get_pixels_from_row_bytes(PixelFormat format, std::size_t row_bytes)
{
std::size_t depth = get_pixel_format_depth(format) * get_pixel_channels(format);
return (row_bytes * 8) / depth;
}
PixelFormat create_pixel_format(unsigned depth, unsigned channels, ColorOrder order)
{
for (const auto& desc : s_known_pixel_formats) {
if (desc.depth == depth && desc.channels == channels && desc.order == order) {
return desc.format;
}
}
throw SaneException("Unknown pixel format %d %d %d", depth, channels,
static_cast<unsigned>(order));
}
static inline unsigned read_bit(const std::uint8_t* data, std::size_t x)
{
return (data[x / 8] >> (7 - (x % 8))) & 0x1;
}
static inline void write_bit(std::uint8_t* data, std::size_t x, unsigned value)
{
value = (value & 0x1) << (7 - (x % 8));
std::uint8_t mask = 0x1 << (7 - (x % 8));
data[x / 8] = (data[x / 8] & ~mask) | (value & mask);
}
Pixel get_pixel_from_row(const std::uint8_t* data, std::size_t x, PixelFormat format)
{
switch (format) {
case PixelFormat::I1: {
std::uint16_t val = read_bit(data, x) ? 0xffff : 0x0000;
return Pixel(val, val, val);
}
case PixelFormat::RGB111: {
x *= 3;
std::uint16_t r = read_bit(data, x) ? 0xffff : 0x0000;
std::uint16_t g = read_bit(data, x + 1) ? 0xffff : 0x0000;
std::uint16_t b = read_bit(data, x + 2) ? 0xffff : 0x0000;
return Pixel(r, g, b);
}
case PixelFormat::I8: {
std::uint16_t val = std::uint16_t(data[x]) | (data[x] << 8);
return Pixel(val, val, val);
}
case PixelFormat::I16: {
x *= 2;
std::uint16_t val = std::uint16_t(data[x]) | (data[x + 1] << 8);
return Pixel(val, val, val);
}
case PixelFormat::RGB888: {
x *= 3;
std::uint16_t r = std::uint16_t(data[x]) | (data[x] << 8);
std::uint16_t g = std::uint16_t(data[x + 1]) | (data[x + 1] << 8);
std::uint16_t b = std::uint16_t(data[x + 2]) | (data[x + 2] << 8);
return Pixel(r, g, b);
}
case PixelFormat::BGR888: {
x *= 3;
std::uint16_t b = std::uint16_t(data[x]) | (data[x] << 8);
std::uint16_t g = std::uint16_t(data[x + 1]) | (data[x + 1] << 8);
std::uint16_t r = std::uint16_t(data[x + 2]) | (data[x + 2] << 8);
return Pixel(r, g, b);
}
case PixelFormat::RGB161616: {
x *= 6;
std::uint16_t r = std::uint16_t(data[x]) | (data[x + 1] << 8);
std::uint16_t g = std::uint16_t(data[x + 2]) | (data[x + 3] << 8);
std::uint16_t b = std::uint16_t(data[x + 4]) | (data[x + 5] << 8);
return Pixel(r, g, b);
}
case PixelFormat::BGR161616: {
x *= 6;
std::uint16_t b = std::uint16_t(data[x]) | (data[x + 1] << 8);
std::uint16_t g = std::uint16_t(data[x + 2]) | (data[x + 3] << 8);
std::uint16_t r = std::uint16_t(data[x + 4]) | (data[x + 5] << 8);
return Pixel(r, g, b);
}
default:
throw SaneException("Unknown pixel format %d", static_cast<unsigned>(format));
}
}
void set_pixel_to_row(std::uint8_t* data, std::size_t x, Pixel pixel, PixelFormat format)
{
switch (format) {
case PixelFormat::I1:
write_bit(data, x, pixel.r & 0x8000 ? 1 : 0);
return;
case PixelFormat::RGB111: {
x *= 3;
write_bit(data, x, pixel.r & 0x8000 ? 1 : 0);
write_bit(data, x + 1,pixel.g & 0x8000 ? 1 : 0);
write_bit(data, x + 2, pixel.b & 0x8000 ? 1 : 0);
return;
}
case PixelFormat::I8: {
float val = (pixel.r >> 8) * 0.3f;
val += (pixel.g >> 8) * 0.59f;
val += (pixel.b >> 8) * 0.11f;
data[x] = static_cast<std::uint16_t>(val);
return;
}
case PixelFormat::I16: {
x *= 2;
float val = pixel.r * 0.3f;
val += pixel.g * 0.59f;
val += pixel.b * 0.11f;
auto val16 = static_cast<std::uint16_t>(val);
data[x] = val16 & 0xff;
data[x + 1] = (val16 >> 8) & 0xff;
return;
}
case PixelFormat::RGB888: {
x *= 3;
data[x] = pixel.r >> 8;
data[x + 1] = pixel.g >> 8;
data[x + 2] = pixel.b >> 8;
return;
}
case PixelFormat::BGR888: {
x *= 3;
data[x] = pixel.b >> 8;
data[x + 1] = pixel.g >> 8;
data[x + 2] = pixel.r >> 8;
return;
}
case PixelFormat::RGB161616: {
x *= 6;
data[x] = pixel.r & 0xff;
data[x + 1] = (pixel.r >> 8) & 0xff;
data[x + 2] = pixel.g & 0xff;
data[x + 3] = (pixel.g >> 8) & 0xff;
data[x + 4] = pixel.b & 0xff;
data[x + 5] = (pixel.b >> 8) & 0xff;
return;
}
case PixelFormat::BGR161616:
x *= 6;
data[x] = pixel.b & 0xff;
data[x + 1] = (pixel.b >> 8) & 0xff;
data[x + 2] = pixel.g & 0xff;
data[x + 3] = (pixel.g >> 8) & 0xff;
data[x + 4] = pixel.r & 0xff;
data[x + 5] = (pixel.r >> 8) & 0xff;
return;
default:
throw SaneException("Unknown pixel format %d", static_cast<unsigned>(format));
}
}
RawPixel get_raw_pixel_from_row(const std::uint8_t* data, std::size_t x, PixelFormat format)
{
switch (format) {
case PixelFormat::I1:
return RawPixel(read_bit(data, x));
case PixelFormat::RGB111: {
x *= 3;
return RawPixel(read_bit(data, x) << 2 |
(read_bit(data, x + 1) << 1) |
(read_bit(data, x + 2)));
}
case PixelFormat::I8:
return RawPixel(data[x]);
case PixelFormat::I16: {
x *= 2;
return RawPixel(data[x], data[x + 1]);
}
case PixelFormat::RGB888:
case PixelFormat::BGR888: {
x *= 3;
return RawPixel(data[x], data[x + 1], data[x + 2]);
}
case PixelFormat::RGB161616:
case PixelFormat::BGR161616: {
x *= 6;
return RawPixel(data[x], data[x + 1], data[x + 2],
data[x + 3], data[x + 4], data[x + 5]);
}
default:
throw SaneException("Unknown pixel format %d", static_cast<unsigned>(format));
}
}
void set_raw_pixel_to_row(std::uint8_t* data, std::size_t x, RawPixel pixel, PixelFormat format)
{
switch (format) {
case PixelFormat::I1:
write_bit(data, x, pixel.data[0] & 0x1);
return;
case PixelFormat::RGB111: {
x *= 3;
write_bit(data, x, (pixel.data[0] >> 2) & 0x1);
write_bit(data, x + 1, (pixel.data[0] >> 1) & 0x1);
write_bit(data, x + 2, (pixel.data[0]) & 0x1);
return;
}
case PixelFormat::I8:
data[x] = pixel.data[0];
return;
case PixelFormat::I16: {
x *= 2;
data[x] = pixel.data[0];
data[x + 1] = pixel.data[1];
return;
}
case PixelFormat::RGB888:
case PixelFormat::BGR888: {
x *= 3;
data[x] = pixel.data[0];
data[x + 1] = pixel.data[1];
data[x + 2] = pixel.data[2];
return;
}
case PixelFormat::RGB161616:
case PixelFormat::BGR161616: {
x *= 6;
data[x] = pixel.data[0];
data[x + 1] = pixel.data[1];
data[x + 2] = pixel.data[2];
data[x + 3] = pixel.data[3];
data[x + 4] = pixel.data[4];
data[x + 5] = pixel.data[5];
return;
}
default:
throw SaneException("Unknown pixel format %d", static_cast<unsigned>(format));
}
}
std::uint16_t get_raw_channel_from_row(const std::uint8_t* data, std::size_t x, unsigned channel,
PixelFormat format)
{
switch (format) {
case PixelFormat::I1:
return read_bit(data, x);
case PixelFormat::RGB111:
return read_bit(data, x * 3 + channel);
case PixelFormat::I8:
return data[x];
case PixelFormat::I16: {
x *= 2;
return data[x] | (data[x + 1] << 8);
}
case PixelFormat::RGB888:
case PixelFormat::BGR888:
return data[x * 3 + channel];
case PixelFormat::RGB161616:
case PixelFormat::BGR161616:
return data[x * 6 + channel * 2] | (data[x * 6 + channel * 2 + 1]) << 8;
default:
throw SaneException("Unknown pixel format %d", static_cast<unsigned>(format));
}
}
void set_raw_channel_to_row(std::uint8_t* data, std::size_t x, unsigned channel,
std::uint16_t pixel, PixelFormat format)
{
switch (format) {
case PixelFormat::I1:
write_bit(data, x, pixel & 0x1);
return;
case PixelFormat::RGB111: {
write_bit(data, x * 3 + channel, pixel & 0x1);
return;
}
case PixelFormat::I8:
data[x] = pixel;
return;
case PixelFormat::I16: {
x *= 2;
data[x] = pixel;
data[x + 1] = pixel >> 8;
return;
}
case PixelFormat::RGB888:
case PixelFormat::BGR888: {
x *= 3;
data[x + channel] = pixel;
return;
}
case PixelFormat::RGB161616:
case PixelFormat::BGR161616: {
x *= 6;
data[x + channel * 2] = pixel;
data[x + channel * 2 + 1] = pixel >> 8;
return;
}
default:
throw SaneException("Unknown pixel format %d", static_cast<unsigned>(format));
}
}
template<PixelFormat Format>
Pixel get_pixel_from_row(const std::uint8_t* data, std::size_t x)
{
return get_pixel_from_row(data, x, Format);
}
template<PixelFormat Format>
void set_pixel_to_row(std::uint8_t* data, std::size_t x, Pixel pixel)
{
set_pixel_to_row(data, x, pixel, Format);
}
template<PixelFormat Format>
RawPixel get_raw_pixel_from_row(const std::uint8_t* data, std::size_t x)
{
return get_raw_pixel_from_row(data, x, Format);
}
template<PixelFormat Format>
void set_raw_pixel_to_row(std::uint8_t* data, std::size_t x, RawPixel pixel)
{
set_raw_pixel_to_row(data, x, pixel, Format);
}
template<PixelFormat Format>
std::uint16_t get_raw_channel_from_row(const std::uint8_t* data, std::size_t x, unsigned channel)
{
return get_raw_channel_from_row(data, x, channel, Format);
}
template<PixelFormat Format>
void set_raw_channel_to_row(std::uint8_t* data, std::size_t x, unsigned channel, std::uint16_t pixel)
{
set_raw_channel_to_row(data, x, channel, pixel, Format);
}
template Pixel get_pixel_from_row<PixelFormat::I1>(const std::uint8_t* data, std::size_t x);
template Pixel get_pixel_from_row<PixelFormat::RGB111>(const std::uint8_t* data, std::size_t x);
template Pixel get_pixel_from_row<PixelFormat::I8>(const std::uint8_t* data, std::size_t x);
template Pixel get_pixel_from_row<PixelFormat::RGB888>(const std::uint8_t* data, std::size_t x);
template Pixel get_pixel_from_row<PixelFormat::BGR888>(const std::uint8_t* data, std::size_t x);
template Pixel get_pixel_from_row<PixelFormat::I16>(const std::uint8_t* data, std::size_t x);
template Pixel get_pixel_from_row<PixelFormat::RGB161616>(const std::uint8_t* data, std::size_t x);
template Pixel get_pixel_from_row<PixelFormat::BGR161616>(const std::uint8_t* data, std::size_t x);
template RawPixel get_raw_pixel_from_row<PixelFormat::I1>(const std::uint8_t* data, std::size_t x);
template RawPixel get_raw_pixel_from_row<PixelFormat::RGB111>(const std::uint8_t* data, std::size_t x);
template RawPixel get_raw_pixel_from_row<PixelFormat::I8>(const std::uint8_t* data, std::size_t x);
template RawPixel get_raw_pixel_from_row<PixelFormat::RGB888>(const std::uint8_t* data, std::size_t x);
template RawPixel get_raw_pixel_from_row<PixelFormat::BGR888>(const std::uint8_t* data, std::size_t x);
template RawPixel get_raw_pixel_from_row<PixelFormat::I16>(const std::uint8_t* data, std::size_t x);
template RawPixel get_raw_pixel_from_row<PixelFormat::RGB161616>(const std::uint8_t* data, std::size_t x);
template RawPixel get_raw_pixel_from_row<PixelFormat::BGR161616>(const std::uint8_t* data, std::size_t x);
template std::uint16_t get_raw_channel_from_row<PixelFormat::I1>(
const std::uint8_t* data, std::size_t x, unsigned channel);
template std::uint16_t get_raw_channel_from_row<PixelFormat::RGB111>(
const std::uint8_t* data, std::size_t x, unsigned channel);
template std::uint16_t get_raw_channel_from_row<PixelFormat::I8>(
const std::uint8_t* data, std::size_t x, unsigned channel);
template std::uint16_t get_raw_channel_from_row<PixelFormat::RGB888>(
const std::uint8_t* data, std::size_t x, unsigned channel);
template std::uint16_t get_raw_channel_from_row<PixelFormat::BGR888>(
const std::uint8_t* data, std::size_t x, unsigned channel);
template std::uint16_t get_raw_channel_from_row<PixelFormat::I16>(
const std::uint8_t* data, std::size_t x, unsigned channel);
template std::uint16_t get_raw_channel_from_row<PixelFormat::RGB161616>(
const std::uint8_t* data, std::size_t x, unsigned channel);
template std::uint16_t get_raw_channel_from_row<PixelFormat::BGR161616>
(const std::uint8_t* data, std::size_t x, unsigned channel);
template void set_pixel_to_row<PixelFormat::I1>(std::uint8_t* data, std::size_t x, Pixel pixel);
template void set_pixel_to_row<PixelFormat::RGB111>(std::uint8_t* data, std::size_t x, Pixel pixel);
template void set_pixel_to_row<PixelFormat::I8>(std::uint8_t* data, std::size_t x, Pixel pixel);
template void set_pixel_to_row<PixelFormat::RGB888>(std::uint8_t* data, std::size_t x, Pixel pixel);
template void set_pixel_to_row<PixelFormat::BGR888>(std::uint8_t* data, std::size_t x, Pixel pixel);
template void set_pixel_to_row<PixelFormat::I16>(std::uint8_t* data, std::size_t x, Pixel pixel);
template void set_pixel_to_row<PixelFormat::RGB161616>(std::uint8_t* data, std::size_t x, Pixel pixel);
template void set_pixel_to_row<PixelFormat::BGR161616>(std::uint8_t* data, std::size_t x, Pixel pixel);
template void set_raw_pixel_to_row<PixelFormat::I1>(std::uint8_t* data, std::size_t x, RawPixel pixel);
template void set_raw_pixel_to_row<PixelFormat::RGB111>(std::uint8_t* data, std::size_t x, RawPixel pixel);
template void set_raw_pixel_to_row<PixelFormat::I8>(std::uint8_t* data, std::size_t x, RawPixel pixel);
template void set_raw_pixel_to_row<PixelFormat::RGB888>(std::uint8_t* data, std::size_t x, RawPixel pixel);
template void set_raw_pixel_to_row<PixelFormat::BGR888>(std::uint8_t* data, std::size_t x, RawPixel pixel);
template void set_raw_pixel_to_row<PixelFormat::I16>(std::uint8_t* data, std::size_t x, RawPixel pixel);
template void set_raw_pixel_to_row<PixelFormat::RGB161616>(std::uint8_t* data, std::size_t x, RawPixel pixel);
template void set_raw_pixel_to_row<PixelFormat::BGR161616>(std::uint8_t* data, std::size_t x, RawPixel pixel);
template void set_raw_channel_to_row<PixelFormat::I1>(
std::uint8_t* data, std::size_t x, unsigned channel, std::uint16_t pixel);
template void set_raw_channel_to_row<PixelFormat::RGB111>(
std::uint8_t* data, std::size_t x, unsigned channel, std::uint16_t pixel);
template void set_raw_channel_to_row<PixelFormat::I8>(
std::uint8_t* data, std::size_t x, unsigned channel, std::uint16_t pixel);
template void set_raw_channel_to_row<PixelFormat::RGB888>(
std::uint8_t* data, std::size_t x, unsigned channel, std::uint16_t pixel);
template void set_raw_channel_to_row<PixelFormat::BGR888>(
std::uint8_t* data, std::size_t x, unsigned channel, std::uint16_t pixel);
template void set_raw_channel_to_row<PixelFormat::I16>(
std::uint8_t* data, std::size_t x, unsigned channel, std::uint16_t pixel);
template void set_raw_channel_to_row<PixelFormat::RGB161616>(
std::uint8_t* data, std::size_t x, unsigned channel, std::uint16_t pixel);
template void set_raw_channel_to_row<PixelFormat::BGR161616>(
std::uint8_t* data, std::size_t x, unsigned channel, std::uint16_t pixel);
} // namespace genesys
|
