1use std::io::{self, Cursor, Read};
2use std::marker::PhantomData;
3use std::mem;
4
5use crate::color::ColorType;
6use crate::error::{
7 DecodingError, ImageError, ImageResult, UnsupportedError, UnsupportedErrorKind,
8};
9use crate::image::{ImageDecoder, ImageFormat};
10
11pub struct JpegDecoder<R> {
13 decoder: jpeg::Decoder<R>,
14 metadata: jpeg::ImageInfo,
15}
16
17impl<R: Read> JpegDecoder<R> {
18 pub fn new(r: R) -> ImageResult<JpegDecoder<R>> {
20 let mut decoder = jpeg::Decoder::new(r);
21
22 decoder.read_info().map_err(ImageError::from_jpeg)?;
23 let mut metadata = decoder.info().ok_or_else(|| {
24 ImageError::Decoding(DecodingError::from_format_hint(ImageFormat::Jpeg.into()))
25 })?;
26
27 if metadata.pixel_format == jpeg::PixelFormat::CMYK32 {
29 metadata.pixel_format = jpeg::PixelFormat::RGB24;
30 }
31
32 Ok(JpegDecoder { decoder, metadata })
33 }
34
35 pub fn scale(
49 &mut self,
50 requested_width: u16,
51 requested_height: u16,
52 ) -> ImageResult<(u16, u16)> {
53 let result = self
54 .decoder
55 .scale(requested_width, requested_height)
56 .map_err(ImageError::from_jpeg)?;
57
58 self.metadata.width = result.0;
59 self.metadata.height = result.1;
60
61 Ok(result)
62 }
63}
64
65pub struct JpegReader<R>(Cursor<Vec<u8>>, PhantomData<R>);
67impl<R> Read for JpegReader<R> {
68 fn read(&mut self, buf: &mut [u8]) -> io::Result<usize> {
69 self.0.read(buf)
70 }
71 fn read_to_end(&mut self, buf: &mut Vec<u8>) -> io::Result<usize> {
72 if self.0.position() == 0 && buf.is_empty() {
73 mem::swap(buf, self.0.get_mut());
74 Ok(buf.len())
75 } else {
76 self.0.read_to_end(buf)
77 }
78 }
79}
80
81impl<'a, R: 'a + Read> ImageDecoder<'a> for JpegDecoder<R> {
82 type Reader = JpegReader<R>;
83
84 fn dimensions(&self) -> (u32, u32) {
85 (
86 u32::from(self.metadata.width),
87 u32::from(self.metadata.height),
88 )
89 }
90
91 fn color_type(&self) -> ColorType {
92 ColorType::from_jpeg(self.metadata.pixel_format)
93 }
94
95 fn icc_profile(&mut self) -> Option<Vec<u8>> {
96 self.decoder.icc_profile()
97 }
98
99 fn into_reader(mut self) -> ImageResult<Self::Reader> {
100 let mut data = self.decoder.decode().map_err(ImageError::from_jpeg)?;
101 data = match self.decoder.info().unwrap().pixel_format {
102 jpeg::PixelFormat::CMYK32 => cmyk_to_rgb(&data),
103 _ => data,
104 };
105
106 Ok(JpegReader(Cursor::new(data), PhantomData))
107 }
108
109 fn read_image(mut self, buf: &mut [u8]) -> ImageResult<()> {
110 assert_eq!(u64::try_from(buf.len()), Ok(self.total_bytes()));
111
112 let mut data = self.decoder.decode().map_err(ImageError::from_jpeg)?;
113 data = match self.decoder.info().unwrap().pixel_format {
114 jpeg::PixelFormat::CMYK32 => cmyk_to_rgb(&data),
115 _ => data,
116 };
117
118 buf.copy_from_slice(&data);
119 Ok(())
120 }
121}
122
123fn cmyk_to_rgb(input: &[u8]) -> Vec<u8> {
124 let count = input.len() / 4;
125 let mut output = vec![0; 3 * count];
126
127 let in_pixels = input[..4 * count].chunks_exact(4);
128 let out_pixels = output[..3 * count].chunks_exact_mut(3);
129
130 for (pixel, outp) in in_pixels.zip(out_pixels) {
131 let c = 255 - u16::from(pixel[0]);
132 let m = 255 - u16::from(pixel[1]);
133 let y = 255 - u16::from(pixel[2]);
134 let k = 255 - u16::from(pixel[3]);
135 let r = (k * c) / 255;
137 let g = (k * m) / 255;
138 let b = (k * y) / 255;
139
140 outp[0] = r as u8;
141 outp[1] = g as u8;
142 outp[2] = b as u8;
143 }
144
145 output
146}
147
148impl ColorType {
149 fn from_jpeg(pixel_format: jpeg::PixelFormat) -> ColorType {
150 use jpeg::PixelFormat::*;
151 match pixel_format {
152 L8 => ColorType::L8,
153 L16 => ColorType::L16,
154 RGB24 => ColorType::Rgb8,
155 CMYK32 => panic!(),
156 }
157 }
158}
159
160impl ImageError {
161 fn from_jpeg(err: jpeg::Error) -> ImageError {
162 use jpeg::Error::*;
163 match err {
164 err @ Format(_) => {
165 ImageError::Decoding(DecodingError::new(ImageFormat::Jpeg.into(), err))
166 }
167 Unsupported(desc) => ImageError::Unsupported(UnsupportedError::from_format_and_kind(
168 ImageFormat::Jpeg.into(),
169 UnsupportedErrorKind::GenericFeature(format!("{:?}", desc)),
170 )),
171 Io(err) => ImageError::IoError(err),
172 Internal(err) => {
173 ImageError::Decoding(DecodingError::new(ImageFormat::Jpeg.into(), err))
174 }
175 }
176 }
177}
178
179#[cfg(test)]
180mod tests {
181 #[cfg(feature = "benchmarks")]
182 extern crate test;
183
184 use super::cmyk_to_rgb;
185 #[cfg(feature = "benchmarks")]
186 use test::Bencher;
187
188 #[cfg(feature = "benchmarks")]
189 const W: usize = 256;
190 #[cfg(feature = "benchmarks")]
191 const H: usize = 256;
192
193 #[test]
194 fn cmyk_to_rgb_correct() {
195 for c in 0..=255 {
196 for k in 0..=255 {
197 let r = (255.0 - f32::from(c)) * (255.0 - f32::from(k)) / 255.0;
199 let r_u8 = r as u8;
200 let convert_r = cmyk_to_rgb(&[c, 0, 0, k])[0];
201 let convert_g = cmyk_to_rgb(&[0, c, 0, k])[1];
202 let convert_b = cmyk_to_rgb(&[0, 0, c, k])[2];
203
204 assert_eq!(
205 convert_r, r_u8,
206 "c = {}, k = {}, cymk_to_rgb[0] = {}, should be {}",
207 c, k, convert_r, r_u8
208 );
209 assert_eq!(
210 convert_g, r_u8,
211 "m = {}, k = {}, cymk_to_rgb[1] = {}, should be {}",
212 c, k, convert_g, r_u8
213 );
214 assert_eq!(
215 convert_b, r_u8,
216 "y = {}, k = {}, cymk_to_rgb[2] = {}, should be {}",
217 c, k, convert_b, r_u8
218 );
219 }
220 }
221 }
222
223 fn single_pix_correct(cmyk_pix: [u8; 4], rgb_pix_true: [u8; 3]) {
224 let rgb_pix = cmyk_to_rgb(&cmyk_pix);
225 assert_eq!(
226 rgb_pix_true[0], rgb_pix[0],
227 "With CMYK {:?} expected {:?}, got {:?}",
228 cmyk_pix, rgb_pix_true, rgb_pix
229 );
230 assert_eq!(
231 rgb_pix_true[1], rgb_pix[1],
232 "With CMYK {:?} expected {:?}, got {:?}",
233 cmyk_pix, rgb_pix_true, rgb_pix
234 );
235 assert_eq!(
236 rgb_pix_true[2], rgb_pix[2],
237 "With CMYK {:?} expected {:?}, got {:?}",
238 cmyk_pix, rgb_pix_true, rgb_pix
239 );
240 }
241
242 #[test]
243 fn test_assorted_colors() {
244 let cmyk_pixels = vec![
245 [0, 51, 102, 65],
246 [153, 204, 0, 65],
247 [0, 0, 0, 67],
248 [0, 85, 170, 69],
249 [0, 0, 0, 71],
250 [0, 0, 0, 73],
251 [0, 17, 34, 75],
252 [51, 68, 85, 75],
253 [102, 119, 136, 75],
254 [153, 170, 187, 75],
255 [204, 221, 238, 75],
256 [0, 0, 0, 77],
257 [0, 0, 0, 79],
258 [0, 85, 170, 81],
259 [0, 0, 0, 83],
260 [0, 3, 6, 85],
261 [9, 12, 15, 85],
262 [18, 21, 24, 85],
263 [27, 30, 33, 85],
264 [36, 39, 42, 85],
265 [45, 48, 51, 85],
266 [54, 57, 60, 85],
267 [63, 66, 69, 85],
268 [72, 75, 78, 85],
269 [81, 84, 87, 85],
270 [90, 93, 96, 85],
271 [99, 102, 105, 85],
272 [108, 111, 114, 85],
273 [117, 120, 123, 85],
274 [126, 129, 132, 85],
275 [135, 138, 141, 85],
276 [144, 147, 150, 85],
277 [153, 156, 159, 85],
278 [162, 165, 168, 85],
279 [171, 174, 177, 85],
280 [180, 183, 186, 85],
281 [189, 192, 195, 85],
282 [198, 201, 204, 85],
283 [207, 210, 213, 85],
284 [216, 219, 222, 85],
285 [225, 228, 231, 85],
286 [234, 237, 240, 85],
287 [243, 246, 249, 85],
288 [252, 0, 0, 85],
289 [0, 85, 170, 87],
290 [0, 0, 0, 89],
291 [0, 0, 0, 91],
292 [0, 85, 170, 93],
293 [0, 51, 102, 95],
294 [153, 204, 0, 95],
295 [0, 0, 0, 97],
296 [0, 85, 170, 99],
297 [0, 0, 0, 101],
298 [0, 0, 0, 103],
299 [0, 17, 34, 105],
300 [51, 68, 85, 105],
301 [102, 119, 136, 105],
302 [153, 170, 187, 105],
303 [204, 221, 238, 105],
304 [0, 0, 0, 107],
305 [0, 0, 0, 109],
306 [0, 85, 170, 111],
307 [0, 0, 0, 113],
308 [0, 51, 102, 115],
309 [153, 204, 0, 115],
310 [0, 85, 170, 117],
311 [0, 15, 30, 119],
312 [45, 60, 75, 119],
313 [90, 105, 120, 119],
314 [135, 150, 165, 119],
315 [180, 195, 210, 119],
316 [225, 240, 0, 119],
317 [0, 0, 0, 121],
318 [0, 85, 170, 123],
319 [0, 51, 102, 125],
320 [153, 204, 0, 125],
321 [0, 0, 0, 127],
322 [0, 0, 0, 128],
323 [0, 85, 170, 129],
324 [0, 51, 102, 130],
325 [153, 204, 0, 130],
326 [0, 0, 0, 131],
327 [0, 85, 170, 132],
328 [0, 0, 0, 133],
329 [0, 0, 0, 134],
330 [0, 17, 34, 135],
331 [51, 68, 85, 135],
332 [102, 119, 136, 135],
333 [153, 170, 187, 135],
334 [204, 221, 238, 135],
335 [0, 15, 30, 136],
336 [45, 60, 75, 136],
337 [90, 105, 120, 136],
338 [135, 150, 165, 136],
339 [180, 195, 210, 136],
340 [225, 240, 0, 136],
341 [0, 0, 0, 137],
342 [0, 85, 170, 138],
343 [0, 0, 0, 139],
344 [0, 51, 102, 140],
345 [153, 204, 0, 140],
346 [0, 85, 170, 141],
347 [0, 0, 0, 142],
348 [0, 0, 0, 143],
349 [0, 85, 170, 144],
350 [0, 51, 102, 145],
351 [153, 204, 0, 145],
352 [0, 0, 0, 146],
353 [0, 85, 170, 147],
354 [0, 0, 0, 148],
355 [0, 0, 0, 149],
356 [0, 17, 34, 150],
357 [51, 68, 85, 150],
358 [102, 119, 136, 150],
359 [153, 170, 187, 150],
360 [204, 221, 238, 150],
361 [0, 0, 0, 151],
362 [0, 0, 0, 152],
363 [0, 5, 10, 153],
364 [15, 20, 25, 153],
365 [30, 35, 40, 153],
366 [45, 50, 55, 153],
367 [60, 65, 70, 153],
368 [75, 80, 85, 153],
369 [90, 95, 100, 153],
370 [105, 110, 115, 153],
371 [120, 125, 130, 153],
372 [135, 140, 145, 153],
373 [150, 155, 160, 153],
374 [165, 170, 175, 153],
375 [180, 185, 190, 153],
376 [195, 200, 205, 153],
377 [210, 215, 220, 153],
378 [225, 230, 235, 153],
379 [240, 245, 250, 153],
380 [0, 0, 0, 154],
381 [0, 51, 102, 155],
382 [153, 204, 0, 155],
383 [0, 85, 170, 156],
384 [0, 0, 0, 157],
385 [0, 0, 0, 158],
386 [0, 85, 170, 159],
387 [0, 51, 102, 160],
388 [153, 204, 0, 160],
389 [0, 0, 0, 161],
390 [0, 85, 170, 162],
391 [0, 0, 0, 163],
392 [0, 0, 0, 164],
393 [0, 17, 34, 165],
394 [51, 68, 85, 165],
395 [102, 119, 136, 165],
396 [153, 170, 187, 165],
397 [204, 221, 238, 165],
398 [0, 0, 0, 166],
399 [0, 0, 0, 167],
400 [0, 85, 170, 168],
401 [0, 0, 0, 169],
402 [0, 3, 6, 170],
403 [9, 12, 15, 170],
404 [18, 21, 24, 170],
405 [27, 30, 33, 170],
406 [36, 39, 42, 170],
407 [45, 48, 51, 170],
408 [54, 57, 60, 170],
409 [63, 66, 69, 170],
410 [72, 75, 78, 170],
411 [81, 84, 87, 170],
412 [90, 93, 96, 170],
413 [99, 102, 105, 170],
414 [108, 111, 114, 170],
415 [117, 120, 123, 170],
416 [126, 129, 132, 170],
417 [135, 138, 141, 170],
418 [144, 147, 150, 170],
419 [153, 156, 159, 170],
420 [162, 165, 168, 170],
421 [171, 174, 177, 170],
422 [180, 183, 186, 170],
423 [189, 192, 195, 170],
424 [198, 201, 204, 170],
425 [207, 210, 213, 170],
426 [216, 219, 222, 170],
427 [225, 228, 231, 170],
428 [234, 237, 240, 170],
429 [243, 246, 249, 170],
430 [252, 0, 0, 170],
431 [0, 85, 170, 171],
432 [0, 0, 0, 172],
433 [0, 0, 0, 173],
434 [0, 85, 170, 174],
435 [0, 51, 102, 175],
436 [153, 204, 0, 175],
437 [0, 0, 0, 176],
438 [0, 85, 170, 177],
439 [0, 0, 0, 178],
440 [0, 0, 0, 179],
441 [0, 17, 34, 180],
442 [51, 68, 85, 180],
443 [102, 119, 136, 180],
444 [153, 170, 187, 180],
445 [204, 221, 238, 180],
446 [0, 0, 0, 181],
447 [0, 0, 0, 182],
448 [0, 85, 170, 183],
449 [0, 0, 0, 184],
450 [0, 51, 102, 185],
451 [153, 204, 0, 185],
452 [0, 85, 170, 186],
453 [0, 15, 30, 187],
454 [45, 60, 75, 187],
455 [90, 105, 120, 187],
456 [135, 150, 165, 187],
457 [180, 195, 210, 187],
458 [225, 240, 0, 187],
459 [0, 0, 0, 188],
460 [0, 85, 170, 189],
461 [0, 51, 102, 190],
462 [153, 204, 0, 190],
463 [0, 0, 0, 191],
464 [0, 85, 170, 192],
465 [0, 0, 0, 193],
466 [0, 0, 0, 194],
467 [0, 17, 34, 195],
468 [51, 68, 85, 195],
469 [102, 119, 136, 195],
470 [153, 170, 187, 195],
471 [204, 221, 238, 195],
472 [0, 0, 0, 196],
473 [0, 0, 0, 197],
474 [0, 85, 170, 198],
475 [0, 0, 0, 199],
476 [0, 51, 102, 200],
477 [153, 204, 0, 200],
478 [0, 85, 170, 201],
479 [0, 0, 0, 202],
480 [0, 0, 0, 203],
481 [0, 5, 10, 204],
482 [15, 20, 25, 204],
483 [30, 35, 40, 204],
484 [45, 50, 55, 204],
485 [60, 65, 70, 204],
486 [75, 80, 85, 204],
487 [90, 95, 100, 204],
488 [105, 110, 115, 204],
489 [120, 125, 130, 204],
490 [135, 140, 145, 204],
491 [150, 155, 160, 204],
492 [165, 170, 175, 204],
493 [180, 185, 190, 204],
494 [195, 200, 205, 204],
495 [210, 215, 220, 204],
496 [225, 230, 235, 204],
497 [240, 245, 250, 204],
498 [0, 51, 102, 205],
499 [153, 204, 0, 205],
500 [0, 0, 0, 206],
501 [0, 85, 170, 207],
502 [0, 0, 0, 208],
503 [0, 0, 0, 209],
504 [0, 17, 34, 210],
505 [51, 68, 85, 210],
506 [102, 119, 136, 210],
507 [153, 170, 187, 210],
508 [204, 221, 238, 210],
509 [0, 0, 0, 211],
510 [0, 0, 0, 212],
511 [0, 85, 170, 213],
512 [0, 0, 0, 214],
513 [0, 51, 102, 215],
514 [153, 204, 0, 215],
515 [0, 85, 170, 216],
516 [0, 0, 0, 217],
517 [0, 0, 0, 218],
518 [0, 85, 170, 219],
519 [0, 51, 102, 220],
520 [153, 204, 0, 220],
521 [0, 15, 30, 221],
522 [45, 60, 75, 221],
523 [90, 105, 120, 221],
524 [135, 150, 165, 221],
525 [180, 195, 210, 221],
526 [225, 240, 0, 221],
527 [0, 85, 170, 222],
528 [0, 0, 0, 223],
529 [0, 0, 0, 224],
530 [0, 17, 34, 225],
531 [51, 68, 85, 225],
532 [102, 119, 136, 225],
533 [153, 170, 187, 225],
534 [204, 221, 238, 225],
535 [0, 0, 0, 226],
536 [0, 0, 0, 227],
537 [0, 85, 170, 228],
538 [0, 0, 0, 229],
539 [0, 51, 102, 230],
540 [153, 204, 0, 230],
541 [0, 85, 170, 231],
542 [0, 0, 0, 232],
543 [0, 0, 0, 233],
544 [0, 85, 170, 234],
545 [0, 51, 102, 235],
546 [153, 204, 0, 235],
547 [0, 0, 0, 236],
548 [0, 85, 170, 237],
549 [0, 15, 30, 238],
550 [45, 60, 75, 238],
551 [90, 105, 120, 238],
552 [135, 150, 165, 238],
553 [180, 195, 210, 238],
554 [225, 240, 0, 238],
555 [0, 0, 0, 239],
556 [0, 17, 34, 240],
557 [51, 68, 85, 240],
558 [102, 119, 136, 240],
559 [153, 170, 187, 240],
560 [204, 221, 238, 240],
561 [0, 0, 0, 241],
562 [0, 0, 0, 242],
563 [0, 85, 170, 243],
564 [0, 0, 0, 244],
565 [0, 51, 102, 245],
566 [153, 204, 0, 245],
567 [0, 85, 170, 246],
568 [0, 0, 0, 247],
569 [0, 0, 0, 248],
570 [0, 85, 170, 249],
571 [0, 51, 102, 250],
572 [153, 204, 0, 250],
573 [0, 0, 0, 251],
574 [0, 85, 170, 252],
575 [0, 0, 0, 253],
576 [0, 0, 0, 254],
577 [5, 15, 25, 102],
578 [35, 40, 45, 102],
579 [50, 55, 60, 102],
580 [65, 70, 75, 102],
581 [80, 85, 90, 102],
582 [95, 100, 105, 102],
583 [110, 115, 120, 102],
584 [125, 130, 135, 102],
585 [140, 145, 150, 102],
586 [155, 160, 165, 102],
587 [170, 175, 180, 102],
588 [185, 190, 195, 102],
589 [200, 205, 210, 102],
590 [215, 220, 225, 102],
591 [230, 235, 240, 102],
592 [245, 250, 0, 102],
593 [15, 45, 60, 68],
594 [75, 90, 105, 68],
595 [120, 135, 150, 68],
596 [165, 180, 195, 68],
597 [210, 225, 240, 68],
598 [17, 34, 51, 45],
599 [68, 85, 102, 45],
600 [119, 136, 153, 45],
601 [170, 187, 204, 45],
602 [221, 238, 0, 45],
603 [17, 51, 68, 60],
604 [85, 102, 119, 60],
605 [136, 153, 170, 60],
606 [187, 204, 221, 60],
607 [238, 0, 0, 60],
608 [17, 34, 51, 90],
609 [68, 85, 102, 90],
610 [119, 136, 153, 90],
611 [170, 187, 204, 90],
612 [221, 238, 0, 90],
613 [17, 34, 51, 120],
614 [68, 85, 102, 120],
615 [119, 136, 153, 120],
616 [170, 187, 204, 120],
617 [221, 238, 0, 120],
618 [20, 25, 30, 51],
619 [35, 40, 45, 51],
620 [50, 55, 60, 51],
621 [65, 70, 75, 51],
622 [80, 85, 90, 51],
623 [95, 100, 105, 51],
624 [110, 115, 120, 51],
625 [125, 130, 135, 51],
626 [140, 145, 150, 51],
627 [155, 160, 165, 51],
628 [170, 175, 180, 51],
629 [185, 190, 195, 51],
630 [200, 205, 210, 51],
631 [215, 220, 225, 51],
632 [230, 235, 240, 51],
633 [245, 250, 0, 51],
634 [45, 60, 75, 17],
635 [90, 105, 120, 17],
636 [135, 150, 165, 17],
637 [180, 195, 210, 17],
638 [225, 240, 0, 17],
639 [45, 75, 90, 34],
640 [105, 120, 135, 34],
641 [150, 165, 180, 34],
642 [195, 210, 225, 34],
643 [240, 0, 0, 34],
644 [51, 153, 204, 20],
645 [51, 102, 153, 25],
646 [204, 0, 0, 25],
647 [51, 85, 119, 30],
648 [136, 153, 170, 30],
649 [187, 204, 221, 30],
650 [238, 0, 0, 30],
651 [51, 102, 153, 35],
652 [204, 0, 0, 35],
653 [51, 102, 153, 40],
654 [204, 0, 0, 40],
655 [51, 102, 153, 50],
656 [204, 0, 0, 50],
657 [51, 102, 153, 55],
658 [204, 0, 0, 55],
659 [51, 102, 153, 70],
660 [204, 0, 0, 70],
661 [51, 102, 153, 80],
662 [204, 0, 0, 80],
663 [51, 102, 153, 100],
664 [204, 0, 0, 100],
665 [51, 102, 153, 110],
666 [204, 0, 0, 110],
667 [65, 67, 69, 0],
668 [71, 73, 75, 0],
669 [77, 79, 81, 0],
670 [83, 85, 87, 0],
671 [89, 91, 93, 0],
672 [95, 97, 99, 0],
673 [101, 103, 105, 0],
674 [107, 109, 111, 0],
675 [113, 115, 117, 0],
676 [119, 121, 123, 0],
677 [125, 127, 128, 0],
678 [129, 130, 131, 0],
679 [132, 133, 134, 0],
680 [135, 136, 137, 0],
681 [138, 139, 140, 0],
682 [141, 142, 143, 0],
683 [144, 145, 146, 0],
684 [147, 148, 149, 0],
685 [150, 151, 152, 0],
686 [153, 154, 155, 0],
687 [156, 157, 158, 0],
688 [159, 160, 161, 0],
689 [162, 163, 164, 0],
690 [165, 166, 167, 0],
691 [168, 169, 170, 0],
692 [171, 172, 173, 0],
693 [174, 175, 176, 0],
694 [177, 178, 179, 0],
695 [180, 181, 182, 0],
696 [183, 184, 185, 0],
697 [186, 187, 188, 0],
698 [189, 190, 191, 0],
699 [192, 193, 194, 0],
700 [195, 196, 197, 0],
701 [198, 199, 200, 0],
702 [201, 202, 203, 0],
703 [204, 205, 206, 0],
704 [207, 208, 209, 0],
705 [210, 211, 212, 0],
706 [213, 214, 215, 0],
707 [216, 217, 218, 0],
708 [219, 220, 221, 0],
709 [222, 223, 224, 0],
710 [225, 226, 227, 0],
711 [228, 229, 230, 0],
712 [231, 232, 233, 0],
713 [234, 235, 236, 0],
714 [237, 238, 239, 0],
715 [240, 241, 242, 0],
716 [243, 244, 245, 0],
717 [246, 247, 248, 0],
718 [249, 250, 251, 0],
719 [252, 253, 254, 0],
720 [68, 85, 102, 15],
721 [119, 136, 153, 15],
722 [170, 187, 204, 15],
723 [221, 238, 0, 15],
724 [85, 170, 0, 3],
725 [85, 170, 0, 6],
726 [85, 170, 0, 9],
727 [85, 170, 0, 12],
728 [85, 170, 0, 18],
729 [85, 170, 0, 21],
730 [85, 170, 0, 24],
731 [85, 170, 0, 27],
732 [85, 170, 0, 33],
733 [85, 170, 0, 36],
734 [85, 170, 0, 39],
735 [85, 170, 0, 42],
736 [85, 170, 0, 48],
737 [85, 170, 0, 54],
738 [85, 170, 0, 57],
739 [85, 170, 0, 63],
740 [85, 170, 0, 66],
741 [85, 170, 0, 72],
742 [85, 170, 0, 78],
743 [85, 170, 0, 84],
744 [85, 170, 0, 96],
745 [85, 170, 0, 108],
746 [85, 170, 0, 114],
747 [85, 170, 0, 126],
748 [102, 153, 204, 5],
749 [153, 204, 0, 10],
750 ];
751 let rgb_pixels = vec![
752 [190, 152, 114],
753 [76, 38, 190],
754 [188, 188, 188],
755 [186, 124, 62],
756 [184, 184, 184],
757 [182, 182, 182],
758 [180, 168, 156],
759 [144, 132, 120],
760 [108, 96, 84],
761 [72, 60, 48],
762 [36, 24, 12],
763 [178, 178, 178],
764 [176, 176, 176],
765 [174, 116, 58],
766 [172, 172, 172],
767 [170, 168, 166],
768 [164, 162, 160],
769 [158, 156, 154],
770 [152, 150, 148],
771 [146, 144, 142],
772 [140, 138, 136],
773 [134, 132, 130],
774 [128, 126, 124],
775 [122, 120, 118],
776 [116, 114, 112],
777 [110, 108, 106],
778 [104, 102, 100],
779 [98, 96, 94],
780 [92, 90, 88],
781 [86, 84, 82],
782 [80, 78, 76],
783 [74, 72, 70],
784 [68, 66, 64],
785 [62, 60, 58],
786 [56, 54, 52],
787 [50, 48, 46],
788 [44, 42, 40],
789 [38, 36, 34],
790 [32, 30, 28],
791 [26, 24, 22],
792 [20, 18, 16],
793 [14, 12, 10],
794 [8, 6, 4],
795 [2, 170, 170],
796 [168, 112, 56],
797 [166, 166, 166],
798 [164, 164, 164],
799 [162, 108, 54],
800 [160, 128, 96],
801 [64, 32, 160],
802 [158, 158, 158],
803 [156, 104, 52],
804 [154, 154, 154],
805 [152, 152, 152],
806 [150, 140, 130],
807 [120, 110, 100],
808 [90, 80, 70],
809 [60, 50, 40],
810 [30, 20, 10],
811 [148, 148, 148],
812 [146, 146, 146],
813 [144, 96, 48],
814 [142, 142, 142],
815 [140, 112, 84],
816 [56, 28, 140],
817 [138, 92, 46],
818 [136, 128, 120],
819 [112, 104, 96],
820 [88, 80, 72],
821 [64, 56, 48],
822 [40, 32, 24],
823 [16, 8, 136],
824 [134, 134, 134],
825 [132, 88, 44],
826 [130, 104, 78],
827 [52, 26, 130],
828 [128, 128, 128],
829 [127, 127, 127],
830 [126, 84, 42],
831 [125, 100, 75],
832 [50, 25, 125],
833 [124, 124, 124],
834 [123, 82, 41],
835 [122, 122, 122],
836 [121, 121, 121],
837 [120, 112, 104],
838 [96, 88, 80],
839 [72, 64, 56],
840 [48, 40, 32],
841 [24, 16, 8],
842 [119, 112, 105],
843 [98, 91, 84],
844 [77, 70, 63],
845 [56, 49, 42],
846 [35, 28, 21],
847 [14, 7, 119],
848 [118, 118, 118],
849 [117, 78, 39],
850 [116, 116, 116],
851 [115, 92, 69],
852 [46, 23, 115],
853 [114, 76, 38],
854 [113, 113, 113],
855 [112, 112, 112],
856 [111, 74, 37],
857 [110, 88, 66],
858 [44, 22, 110],
859 [109, 109, 109],
860 [108, 72, 36],
861 [107, 107, 107],
862 [106, 106, 106],
863 [105, 98, 91],
864 [84, 77, 70],
865 [63, 56, 49],
866 [42, 35, 28],
867 [21, 14, 7],
868 [104, 104, 104],
869 [103, 103, 103],
870 [102, 100, 98],
871 [96, 94, 92],
872 [90, 88, 86],
873 [84, 82, 80],
874 [78, 76, 74],
875 [72, 70, 68],
876 [66, 64, 62],
877 [60, 58, 56],
878 [54, 52, 50],
879 [48, 46, 44],
880 [42, 40, 38],
881 [36, 34, 32],
882 [30, 28, 26],
883 [24, 22, 20],
884 [18, 16, 14],
885 [12, 10, 8],
886 [6, 4, 2],
887 [101, 101, 101],
888 [100, 80, 60],
889 [40, 20, 100],
890 [99, 66, 33],
891 [98, 98, 98],
892 [97, 97, 97],
893 [96, 64, 32],
894 [95, 76, 57],
895 [38, 19, 95],
896 [94, 94, 94],
897 [93, 62, 31],
898 [92, 92, 92],
899 [91, 91, 91],
900 [90, 84, 78],
901 [72, 66, 60],
902 [54, 48, 42],
903 [36, 30, 24],
904 [18, 12, 6],
905 [89, 89, 89],
906 [88, 88, 88],
907 [87, 58, 29],
908 [86, 86, 86],
909 [85, 84, 83],
910 [82, 81, 80],
911 [79, 78, 77],
912 [76, 75, 74],
913 [73, 72, 71],
914 [70, 69, 68],
915 [67, 66, 65],
916 [64, 63, 62],
917 [61, 60, 59],
918 [58, 57, 56],
919 [55, 54, 53],
920 [52, 51, 50],
921 [49, 48, 47],
922 [46, 45, 44],
923 [43, 42, 41],
924 [40, 39, 38],
925 [37, 36, 35],
926 [34, 33, 32],
927 [31, 30, 29],
928 [28, 27, 26],
929 [25, 24, 23],
930 [22, 21, 20],
931 [19, 18, 17],
932 [16, 15, 14],
933 [13, 12, 11],
934 [10, 9, 8],
935 [7, 6, 5],
936 [4, 3, 2],
937 [1, 85, 85],
938 [84, 56, 28],
939 [83, 83, 83],
940 [82, 82, 82],
941 [81, 54, 27],
942 [80, 64, 48],
943 [32, 16, 80],
944 [79, 79, 79],
945 [78, 52, 26],
946 [77, 77, 77],
947 [76, 76, 76],
948 [75, 70, 65],
949 [60, 55, 50],
950 [45, 40, 35],
951 [30, 25, 20],
952 [15, 10, 5],
953 [74, 74, 74],
954 [73, 73, 73],
955 [72, 48, 24],
956 [71, 71, 71],
957 [70, 56, 42],
958 [28, 14, 70],
959 [69, 46, 23],
960 [68, 64, 60],
961 [56, 52, 48],
962 [44, 40, 36],
963 [32, 28, 24],
964 [20, 16, 12],
965 [8, 4, 68],
966 [67, 67, 67],
967 [66, 44, 22],
968 [65, 52, 39],
969 [26, 13, 65],
970 [64, 64, 64],
971 [63, 42, 21],
972 [62, 62, 62],
973 [61, 61, 61],
974 [60, 56, 52],
975 [48, 44, 40],
976 [36, 32, 28],
977 [24, 20, 16],
978 [12, 8, 4],
979 [59, 59, 59],
980 [58, 58, 58],
981 [57, 38, 19],
982 [56, 56, 56],
983 [55, 44, 33],
984 [22, 11, 55],
985 [54, 36, 18],
986 [53, 53, 53],
987 [52, 52, 52],
988 [51, 50, 49],
989 [48, 47, 46],
990 [45, 44, 43],
991 [42, 41, 40],
992 [39, 38, 37],
993 [36, 35, 34],
994 [33, 32, 31],
995 [30, 29, 28],
996 [27, 26, 25],
997 [24, 23, 22],
998 [21, 20, 19],
999 [18, 17, 16],
1000 [15, 14, 13],
1001 [12, 11, 10],
1002 [9, 8, 7],
1003 [6, 5, 4],
1004 [3, 2, 1],
1005 [50, 40, 30],
1006 [20, 10, 50],
1007 [49, 49, 49],
1008 [48, 32, 16],
1009 [47, 47, 47],
1010 [46, 46, 46],
1011 [45, 42, 39],
1012 [36, 33, 30],
1013 [27, 24, 21],
1014 [18, 15, 12],
1015 [9, 6, 3],
1016 [44, 44, 44],
1017 [43, 43, 43],
1018 [42, 28, 14],
1019 [41, 41, 41],
1020 [40, 32, 24],
1021 [16, 8, 40],
1022 [39, 26, 13],
1023 [38, 38, 38],
1024 [37, 37, 37],
1025 [36, 24, 12],
1026 [35, 28, 21],
1027 [14, 7, 35],
1028 [34, 32, 30],
1029 [28, 26, 24],
1030 [22, 20, 18],
1031 [16, 14, 12],
1032 [10, 8, 6],
1033 [4, 2, 34],
1034 [33, 22, 11],
1035 [32, 32, 32],
1036 [31, 31, 31],
1037 [30, 28, 26],
1038 [24, 22, 20],
1039 [18, 16, 14],
1040 [12, 10, 8],
1041 [6, 4, 2],
1042 [29, 29, 29],
1043 [28, 28, 28],
1044 [27, 18, 9],
1045 [26, 26, 26],
1046 [25, 20, 15],
1047 [10, 5, 25],
1048 [24, 16, 8],
1049 [23, 23, 23],
1050 [22, 22, 22],
1051 [21, 14, 7],
1052 [20, 16, 12],
1053 [8, 4, 20],
1054 [19, 19, 19],
1055 [18, 12, 6],
1056 [17, 16, 15],
1057 [14, 13, 12],
1058 [11, 10, 9],
1059 [8, 7, 6],
1060 [5, 4, 3],
1061 [2, 1, 17],
1062 [16, 16, 16],
1063 [15, 14, 13],
1064 [12, 11, 10],
1065 [9, 8, 7],
1066 [6, 5, 4],
1067 [3, 2, 1],
1068 [14, 14, 14],
1069 [13, 13, 13],
1070 [12, 8, 4],
1071 [11, 11, 11],
1072 [10, 8, 6],
1073 [4, 2, 10],
1074 [9, 6, 3],
1075 [8, 8, 8],
1076 [7, 7, 7],
1077 [6, 4, 2],
1078 [5, 4, 3],
1079 [2, 1, 5],
1080 [4, 4, 4],
1081 [3, 2, 1],
1082 [2, 2, 2],
1083 [1, 1, 1],
1084 [150, 144, 138],
1085 [132, 129, 126],
1086 [123, 120, 117],
1087 [114, 111, 108],
1088 [105, 102, 99],
1089 [96, 93, 90],
1090 [87, 84, 81],
1091 [78, 75, 72],
1092 [69, 66, 63],
1093 [60, 57, 54],
1094 [51, 48, 45],
1095 [42, 39, 36],
1096 [33, 30, 27],
1097 [24, 21, 18],
1098 [15, 12, 9],
1099 [6, 3, 153],
1100 [176, 154, 143],
1101 [132, 121, 110],
1102 [99, 88, 77],
1103 [66, 55, 44],
1104 [33, 22, 11],
1105 [196, 182, 168],
1106 [154, 140, 126],
1107 [112, 98, 84],
1108 [70, 56, 42],
1109 [28, 14, 210],
1110 [182, 156, 143],
1111 [130, 117, 104],
1112 [91, 78, 65],
1113 [52, 39, 26],
1114 [13, 195, 195],
1115 [154, 143, 132],
1116 [121, 110, 99],
1117 [88, 77, 66],
1118 [55, 44, 33],
1119 [22, 11, 165],
1120 [126, 117, 108],
1121 [99, 90, 81],
1122 [72, 63, 54],
1123 [45, 36, 27],
1124 [18, 9, 135],
1125 [188, 184, 180],
1126 [176, 172, 168],
1127 [164, 160, 156],
1128 [152, 148, 144],
1129 [140, 136, 132],
1130 [128, 124, 120],
1131 [116, 112, 108],
1132 [104, 100, 96],
1133 [92, 88, 84],
1134 [80, 76, 72],
1135 [68, 64, 60],
1136 [56, 52, 48],
1137 [44, 40, 36],
1138 [32, 28, 24],
1139 [20, 16, 12],
1140 [8, 4, 204],
1141 [196, 182, 168],
1142 [154, 140, 126],
1143 [112, 98, 84],
1144 [70, 56, 42],
1145 [28, 14, 238],
1146 [182, 156, 143],
1147 [130, 117, 104],
1148 [91, 78, 65],
1149 [52, 39, 26],
1150 [13, 221, 221],
1151 [188, 94, 47],
1152 [184, 138, 92],
1153 [46, 230, 230],
1154 [180, 150, 120],
1155 [105, 90, 75],
1156 [60, 45, 30],
1157 [15, 225, 225],
1158 [176, 132, 88],
1159 [44, 220, 220],
1160 [172, 129, 86],
1161 [43, 215, 215],
1162 [164, 123, 82],
1163 [41, 205, 205],
1164 [160, 120, 80],
1165 [40, 200, 200],
1166 [148, 111, 74],
1167 [37, 185, 185],
1168 [140, 105, 70],
1169 [35, 175, 175],
1170 [124, 93, 62],
1171 [31, 155, 155],
1172 [116, 87, 58],
1173 [29, 145, 145],
1174 [190, 188, 186],
1175 [184, 182, 180],
1176 [178, 176, 174],
1177 [172, 170, 168],
1178 [166, 164, 162],
1179 [160, 158, 156],
1180 [154, 152, 150],
1181 [148, 146, 144],
1182 [142, 140, 138],
1183 [136, 134, 132],
1184 [130, 128, 127],
1185 [126, 125, 124],
1186 [123, 122, 121],
1187 [120, 119, 118],
1188 [117, 116, 115],
1189 [114, 113, 112],
1190 [111, 110, 109],
1191 [108, 107, 106],
1192 [105, 104, 103],
1193 [102, 101, 100],
1194 [99, 98, 97],
1195 [96, 95, 94],
1196 [93, 92, 91],
1197 [90, 89, 88],
1198 [87, 86, 85],
1199 [84, 83, 82],
1200 [81, 80, 79],
1201 [78, 77, 76],
1202 [75, 74, 73],
1203 [72, 71, 70],
1204 [69, 68, 67],
1205 [66, 65, 64],
1206 [63, 62, 61],
1207 [60, 59, 58],
1208 [57, 56, 55],
1209 [54, 53, 52],
1210 [51, 50, 49],
1211 [48, 47, 46],
1212 [45, 44, 43],
1213 [42, 41, 40],
1214 [39, 38, 37],
1215 [36, 35, 34],
1216 [33, 32, 31],
1217 [30, 29, 28],
1218 [27, 26, 25],
1219 [24, 23, 22],
1220 [21, 20, 19],
1221 [18, 17, 16],
1222 [15, 14, 13],
1223 [12, 11, 10],
1224 [9, 8, 7],
1225 [6, 5, 4],
1226 [3, 2, 1],
1227 [176, 160, 144],
1228 [128, 112, 96],
1229 [80, 64, 48],
1230 [32, 16, 240],
1231 [168, 84, 252],
1232 [166, 83, 249],
1233 [164, 82, 246],
1234 [162, 81, 243],
1235 [158, 79, 237],
1236 [156, 78, 234],
1237 [154, 77, 231],
1238 [152, 76, 228],
1239 [148, 74, 222],
1240 [146, 73, 219],
1241 [144, 72, 216],
1242 [142, 71, 213],
1243 [138, 69, 207],
1244 [134, 67, 201],
1245 [132, 66, 198],
1246 [128, 64, 192],
1247 [126, 63, 189],
1248 [122, 61, 183],
1249 [118, 59, 177],
1250 [114, 57, 171],
1251 [106, 53, 159],
1252 [98, 49, 147],
1253 [94, 47, 141],
1254 [86, 43, 129],
1255 [150, 100, 50],
1256 [98, 49, 245],
1257 ];
1258 for (&cmyk_pixel, rgb_pixel) in cmyk_pixels.iter().zip(rgb_pixels) {
1259 single_pix_correct(cmyk_pixel, rgb_pixel);
1260 }
1261 }
1262
1263 #[cfg(feature = "benchmarks")]
1264 #[bench]
1265 fn bench_cmyk_to_rgb(b: &mut Bencher) {
1266 let mut v = Vec::with_capacity(W * H * 4);
1267 for c in 0..=255 {
1268 for k in 0..=255 {
1269 v.push(c as u8);
1270 v.push(0);
1271 v.push(0);
1272 v.push(k as u8);
1273 }
1274 }
1275
1276 b.iter(|| {
1277 cmyk_to_rgb(&v);
1278 });
1279 }
1280
1281 #[cfg(feature = "benchmarks")]
1282 #[bench]
1283 fn bench_cmyk_to_rgb_single(b: &mut Bencher) {
1284 b.iter(|| {
1285 cmyk_to_rgb(&[128, 128, 128, 128]);
1286 });
1287 }
1288}