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1 | use super::*; | |
2 | use super::kernel::Kernel; | |
3 | ||
4 | const DEFAULT_YUV: usize = 4; | |
5 | ||
6 | const YUV_PARAMS: &[[f32; 2]] = &[ | |
7 | [ 0.333, 0.333 ], // RGB | |
8 | [ 0.2126, 0.0722 ], // ITU-R BT709 | |
9 | [ 0.333, 0.333 ], // unspecified | |
10 | [ 0.333, 0.333 ], // reserved | |
11 | [ 0.299, 0.114 ], // ITU-R BT601 | |
12 | [ 0.299, 0.114 ], // ITU-R BT470 | |
13 | [ 0.299, 0.114 ], // SMPTE 170M | |
14 | [ 0.212, 0.087 ], // SMPTE 240M | |
15 | [ 0.333, 0.333 ], // YCoCg | |
16 | [ 0.2627, 0.0593 ], // ITU-R BT2020 | |
17 | [ 0.2627, 0.0593 ], // ITU-R BT2020 | |
18 | ]; | |
19 | ||
20 | const BT_PAL_COEFFS: [f32; 2] = [ 0.493, 0.877 ]; | |
21 | ||
22 | const SMPTE_NTSC_COEFFS: &[f32; 4] = &[ -0.268, 0.7358, 0.4127, 0.4778 ]; | |
23 | ||
24 | /*const RGB2YCOCG: [[f32; 3]; 3] = [ | |
25 | [ 0.25, 0.5, 0.25 ], | |
26 | [ -0.25, 0.5, -0.25 ], | |
27 | [ 0.5, 0.0, -0.5 ] | |
28 | ]; | |
29 | const YCOCG2RGB: [[f32; 3]; 3] = [ | |
30 | [ 1.0, -1.0, 1.0 ], | |
31 | [ 1.0, 1.0, 0.0 ], | |
32 | [ 1.0, -1.0, -1.0 ] | |
33 | ]; | |
34 | ||
35 | const XYZ2RGB: [[f32; 3]; 3] = [ | |
36 | [ 0.49, 0.31, 0.2 ], | |
37 | [ 0.17697, 0.8124, 0.01063 ], | |
38 | [ 0.0, 0.01, 0.99 ] | |
39 | ]; | |
40 | const RGB2XYZ: [[f32; 3]; 3] = [ | |
41 | [ 2.364613, -0.89654, -0.46807 ], | |
42 | [ -0.515167, 1.42641, 0.08876 ], | |
43 | [ 0.0052, -0.01441, 1.00920 ] | |
44 | ];*/ | |
45 | ||
46 | fn make_rgb2yuv(kr: f32, kb: f32, mat: &mut [[f32; 3]; 3]) { | |
47 | // Y | |
48 | mat[0][0] = kr; | |
49 | mat[0][1] = 1.0 - kr - kb; | |
50 | mat[0][2] = kb; | |
51 | // Cb | |
52 | mat[1][0] = -mat[0][0] * 0.5 / (1.0 - kb); | |
53 | mat[1][1] = -mat[0][1] * 0.5 / (1.0 - kb); | |
54 | mat[1][2] = 0.5; | |
55 | // Cr | |
56 | mat[2][0] = 0.5; | |
57 | mat[2][1] = -mat[0][1] * 0.5 / (1.0 - kr); | |
58 | mat[2][2] = -mat[0][2] * 0.5 / (1.0 - kr); | |
59 | } | |
60 | ||
61 | fn make_yuv2rgb(kr: f32, kb: f32, mat: &mut [[f32; 3]; 3]) { | |
62 | let kg = 1.0 - kr - kb; | |
63 | ||
64 | // R | |
65 | mat[0][0] = 1.0; | |
66 | mat[0][1] = 0.0; | |
67 | mat[0][2] = 2.0 * (1.0 - kr); | |
68 | // G | |
69 | mat[1][0] = 1.0; | |
70 | mat[1][1] = -kb * 2.0 * (1.0 - kb) / kg; | |
71 | mat[1][2] = -kr * 2.0 * (1.0 - kr) / kg; | |
72 | // B | |
73 | mat[2][0] = 1.0; | |
74 | mat[2][1] = 2.0 * (1.0 - kb); | |
75 | mat[2][2] = 0.0; | |
76 | } | |
77 | ||
78 | fn apply_pal_rgb2yuv(eu: f32, ev: f32, mat: &mut [[f32; 3]; 3]) { | |
79 | let ufac = 2.0 * (1.0 - mat[0][2]) * eu; | |
80 | let vfac = 2.0 * (1.0 - mat[0][0]) * ev; | |
81 | ||
82 | // U | |
83 | mat[1][0] *= ufac; | |
84 | mat[1][1] *= ufac; | |
85 | mat[1][2] = eu * (1.0 - mat[0][2]); | |
86 | // V | |
87 | mat[2][0] = ev * (1.0 - mat[0][0]); | |
88 | mat[2][1] *= vfac; | |
89 | mat[2][2] *= vfac; | |
90 | } | |
91 | ||
92 | fn apply_pal_yuv2rgb(eu: f32, ev: f32, mat: &mut [[f32; 3]; 3]) { | |
93 | let ufac = 1.0 / (mat[2][1] * eu); | |
94 | let vfac = 1.0 / (mat[0][2] * ev); | |
95 | ||
96 | // R | |
97 | mat[0][2] *= vfac; | |
98 | // G | |
99 | mat[1][1] *= ufac; | |
100 | mat[1][2] *= vfac; | |
101 | // B | |
102 | mat[2][1] *= ufac; | |
103 | } | |
104 | ||
105 | fn apply_ntsc_rgb2yiq(params: &[f32; 4], mat: &mut [[f32; 3]; 3]) { | |
106 | let ufac = 2.0 * (1.0 - mat[0][2]); | |
107 | let vfac = 2.0 * (1.0 - mat[0][0]); | |
108 | let mut tmp: [[f32; 3]; 2] = [[0.0; 3]; 2]; | |
109 | ||
110 | for i in 0..3 { | |
111 | tmp[0][i] = mat[1][i] * ufac; | |
112 | tmp[1][i] = mat[2][i] * vfac; | |
113 | } | |
114 | for i in 0..3 { | |
115 | mat[1][i] = params[0] * tmp[0][i] + params[1] * tmp[1][i]; | |
116 | mat[2][i] = params[2] * tmp[0][i] + params[3] * tmp[1][i]; | |
117 | } | |
118 | } | |
119 | ||
120 | fn subm_det(mat: &[[f32; 3]; 3], col: usize, row: usize) -> f32 { | |
121 | let row0 = if row == 0 { 1 } else { 0 }; | |
122 | let row1 = if (row == 1) || (row0 == 1) { 2 } else { 1 }; | |
123 | let col0 = if col == 0 { 1 } else { 0 }; | |
124 | let col1 = if (col == 1) || (col0 == 1) { 2 } else { 1 }; | |
125 | ||
126 | let det = mat[row0][col0] * mat[row1][col1] - mat[row0][col1] * mat[row1][col0]; | |
127 | if ((col ^ row) & 1) == 0 { | |
128 | det | |
129 | } else { | |
130 | -det | |
131 | } | |
132 | } | |
133 | ||
134 | fn invert_matrix(mat: &mut [[f32; 3]; 3]) { | |
135 | let d00 = subm_det(mat, 0, 0); | |
136 | let d01 = subm_det(mat, 0, 1); | |
137 | let d02 = subm_det(mat, 0, 2); | |
138 | let d10 = subm_det(mat, 1, 0); | |
139 | let d11 = subm_det(mat, 1, 1); | |
140 | let d12 = subm_det(mat, 1, 2); | |
141 | let d20 = subm_det(mat, 2, 0); | |
142 | let d21 = subm_det(mat, 2, 1); | |
143 | let d22 = subm_det(mat, 2, 2); | |
144 | let det = 1.0 / (mat[0][0] * d00 + mat[0][1] * d10 + mat[0][2] * d20).abs(); | |
145 | ||
146 | mat[0][0] = det * d00; | |
147 | mat[0][1] = det * d01; | |
148 | mat[0][2] = det * d02; | |
149 | mat[1][0] = det * d10; | |
150 | mat[1][1] = det * d11; | |
151 | mat[1][2] = det * d12; | |
152 | mat[2][0] = det * d20; | |
153 | mat[2][1] = det * d21; | |
154 | mat[2][2] = det * d22; | |
155 | } | |
156 | ||
157 | fn matrix_mul(mat: &[[f32; 3]; 3], a: f32, b: f32, c: f32) -> (f32, f32, f32) { | |
158 | (a * mat[0][0] + b * mat[0][1] + c * mat[0][2], | |
159 | a * mat[1][0] + b * mat[1][1] + c * mat[1][2], | |
160 | a * mat[2][0] + b * mat[2][1] + c * mat[2][2] ) | |
161 | } | |
162 | ||
163 | #[derive(Default)] | |
164 | struct RgbToYuv { | |
165 | matrix: [[f32; 3]; 3], | |
166 | } | |
167 | ||
168 | impl RgbToYuv { | |
169 | fn new() -> Self { Self::default() } | |
170 | } | |
171 | ||
172 | #[allow(clippy::many_single_char_names)] | |
173 | impl Kernel for RgbToYuv { | |
174 | fn init(&mut self, in_fmt: &ScaleInfo, dest_fmt: &ScaleInfo) -> ScaleResult<NABufferType> { | |
175 | let mut df = dest_fmt.fmt; | |
176 | //todo coeff selection | |
177 | make_rgb2yuv(YUV_PARAMS[DEFAULT_YUV][0], YUV_PARAMS[DEFAULT_YUV][1], &mut self.matrix); | |
178 | if let ColorModel::YUV(yuvsm) = df.get_model() { | |
179 | match yuvsm { | |
180 | YUVSubmodel::YCbCr => {}, | |
181 | YUVSubmodel::YIQ => { apply_ntsc_rgb2yiq(SMPTE_NTSC_COEFFS, &mut self.matrix); }, | |
182 | YUVSubmodel::YUVJ => { apply_pal_rgb2yuv(BT_PAL_COEFFS[0], BT_PAL_COEFFS[1], &mut self.matrix); }, | |
183 | }; | |
184 | } else { | |
185 | return Err(ScaleError::InvalidArgument); | |
186 | } | |
187 | for i in 0..MAX_CHROMATONS { | |
188 | if let Some(ref mut chr) = df.comp_info[i] { | |
189 | chr.packed = false; | |
190 | chr.comp_offs = i as u8; | |
191 | chr.h_ss = 0; | |
192 | chr.v_ss = 0; | |
193 | } | |
194 | } | |
195 | println!(" [intermediate format {}]", df); | |
196 | let res = alloc_video_buffer(NAVideoInfo::new(in_fmt.width, in_fmt.height, false, df), 3); | |
197 | if res.is_err() { return Err(ScaleError::AllocError); } | |
198 | Ok(res.unwrap()) | |
199 | } | |
200 | fn process(&mut self, pic_in: &NABufferType, pic_out: &mut NABufferType) { | |
201 | if let (Some(ref sbuf), Some(ref mut dbuf)) = (pic_in.get_vbuf(), pic_out.get_vbuf()) { | |
202 | if dbuf.get_info().get_format().get_num_comp() < 3 { | |
203 | return self.process_grayscale(sbuf, dbuf); | |
204 | } | |
205 | let istrides = [sbuf.get_stride(0), sbuf.get_stride(1), sbuf.get_stride(2)]; | |
206 | let dstrides = [dbuf.get_stride(0), dbuf.get_stride(1), dbuf.get_stride(2)]; | |
207 | let (w, h) = sbuf.get_dimensions(0); | |
208 | ||
209 | let mut roff = sbuf.get_offset(0); | |
210 | let mut goff = sbuf.get_offset(1); | |
211 | let mut boff = sbuf.get_offset(2); | |
212 | let mut yoff = dbuf.get_offset(0); | |
213 | let mut uoff = dbuf.get_offset(1); | |
214 | let mut voff = dbuf.get_offset(2); | |
215 | let src = sbuf.get_data(); | |
216 | let dst = dbuf.get_data_mut().unwrap(); | |
217 | for _y in 0..h { | |
218 | for x in 0..w { | |
219 | let r = f32::from(src[roff + x]); | |
220 | let g = f32::from(src[goff + x]); | |
221 | let b = f32::from(src[boff + x]); | |
222 | let (y, u, v) = matrix_mul(&self.matrix, r, g, b); | |
223 | ||
224 | dst[yoff + x] = (y as i16).max(0).min(255) as u8; | |
225 | dst[uoff + x] = ((u as i16).max(-128).min(128) + 128) as u8; | |
226 | dst[voff + x] = ((v as i16).max(-128).min(128) + 128) as u8; | |
227 | } | |
228 | roff += istrides[0]; | |
229 | goff += istrides[1]; | |
230 | boff += istrides[2]; | |
231 | yoff += dstrides[0]; | |
232 | uoff += dstrides[1]; | |
233 | voff += dstrides[2]; | |
234 | } | |
235 | } | |
236 | } | |
237 | } | |
238 | ||
239 | impl RgbToYuv { | |
240 | fn process_grayscale(&self, sbuf: &NAVideoBuffer<u8>, dbuf: &mut NAVideoBuffer<u8>) { | |
241 | let istrides = [sbuf.get_stride(0), sbuf.get_stride(1), sbuf.get_stride(2)]; | |
242 | let ystride = dbuf.get_stride(0); | |
243 | let (w, h) = sbuf.get_dimensions(0); | |
244 | ||
245 | let mut roff = sbuf.get_offset(0); | |
246 | let mut goff = sbuf.get_offset(1); | |
247 | let mut boff = sbuf.get_offset(2); | |
248 | let mut yoff = dbuf.get_offset(0); | |
249 | let src = sbuf.get_data(); | |
250 | let dst = dbuf.get_data_mut().unwrap(); | |
251 | for _y in 0..h { | |
252 | for x in 0..w { | |
253 | let r = f32::from(src[roff + x]); | |
254 | let g = f32::from(src[goff + x]); | |
255 | let b = f32::from(src[boff + x]); | |
256 | let (y, _u, _v) = matrix_mul(&self.matrix, r, g, b); | |
257 | ||
258 | dst[yoff + x] = (y as i16).max(0).min(255) as u8; | |
259 | } | |
260 | roff += istrides[0]; | |
261 | goff += istrides[1]; | |
262 | boff += istrides[2]; | |
263 | yoff += ystride; | |
264 | } | |
265 | } | |
266 | } | |
267 | ||
268 | pub fn create_rgb2yuv() -> Box<dyn Kernel> { | |
269 | Box::new(RgbToYuv::new()) | |
270 | } | |
271 | ||
272 | #[derive(Default)] | |
273 | struct YuvToRgb { | |
274 | matrix: [[f32; 3]; 3], | |
275 | yscale: Vec<i16>, | |
276 | r_chr: Vec<i16>, | |
277 | g_u: Vec<i16>, | |
278 | g_v: Vec<i16>, | |
279 | b_chr: Vec<i16>, | |
280 | } | |
281 | ||
282 | impl YuvToRgb { | |
283 | fn new() -> Self { Self::default() } | |
284 | } | |
285 | ||
286 | #[allow(clippy::many_single_char_names)] | |
287 | impl Kernel for YuvToRgb { | |
288 | fn init(&mut self, in_fmt: &ScaleInfo, dest_fmt: &ScaleInfo) -> ScaleResult<NABufferType> { | |
289 | let mut df = dest_fmt.fmt; | |
290 | df.palette = false; | |
291 | if !df.is_unpacked() || df.get_max_depth() != 8 || df.get_total_depth() != df.get_num_comp() as u8 * 8 { | |
292 | df = NAPixelFormaton { | |
293 | model: ColorModel::RGB(RGBSubmodel::RGB), components: 3, | |
294 | comp_info: [ | |
295 | Some(NAPixelChromaton{ h_ss: 0, v_ss: 0, packed: false, depth: 8, shift: 0, comp_offs: 0, next_elem: 1 }), | |
296 | Some(NAPixelChromaton{ h_ss: 0, v_ss: 0, packed: false, depth: 8, shift: 0, comp_offs: 1, next_elem: 1 }), | |
297 | Some(NAPixelChromaton{ h_ss: 0, v_ss: 0, packed: false, depth: 8, shift: 0, comp_offs: 2, next_elem: 1 }), | |
298 | None, None], | |
299 | elem_size: 3, be: false, alpha: false, palette: false }; | |
300 | if in_fmt.fmt.alpha && dest_fmt.fmt.alpha { | |
301 | df.alpha = true; | |
302 | df.components = 4; | |
303 | df.comp_info[3] = Some(NAPixelChromaton{ h_ss: 0, v_ss: 0, packed: false, depth: 8, shift: 0, comp_offs: 3, next_elem: 1 }); | |
304 | } | |
305 | } | |
306 | //todo coeff selection | |
307 | make_yuv2rgb(YUV_PARAMS[DEFAULT_YUV][0], YUV_PARAMS[DEFAULT_YUV][1], &mut self.matrix); | |
308 | if let ColorModel::YUV(yuvsm) = in_fmt.fmt.get_model() { | |
309 | match yuvsm { | |
310 | YUVSubmodel::YCbCr => {}, | |
311 | YUVSubmodel::YIQ => { | |
312 | make_rgb2yuv(YUV_PARAMS[DEFAULT_YUV][0], YUV_PARAMS[DEFAULT_YUV][1], &mut self.matrix); | |
313 | apply_ntsc_rgb2yiq(SMPTE_NTSC_COEFFS, &mut self.matrix); | |
314 | invert_matrix(&mut self.matrix); | |
315 | }, | |
316 | YUVSubmodel::YUVJ => { | |
317 | apply_pal_yuv2rgb(BT_PAL_COEFFS[0], BT_PAL_COEFFS[1], &mut self.matrix); | |
318 | }, | |
319 | }; | |
320 | if yuvsm != YUVSubmodel::YIQ { | |
321 | self.yscale = Vec::with_capacity(256); | |
322 | self.r_chr = Vec::with_capacity(256); | |
323 | self.g_u = Vec::with_capacity(256); | |
324 | self.g_v = Vec::with_capacity(256); | |
325 | self.b_chr = Vec::with_capacity(256); | |
326 | for i in 0..256 { | |
327 | let yval = i as i16; // todo limited range as well | |
328 | self.yscale.push(yval); | |
329 | let rval = (((i as f32) - 128.0) * self.matrix[0][2]) as i16; | |
330 | self.r_chr.push(rval); | |
331 | let uval = (((i as f32) - 128.0) * self.matrix[1][1]) as i16; | |
332 | self.g_u.push(uval); | |
333 | let vval = (((i as f32) - 128.0) * self.matrix[1][2]) as i16; | |
334 | self.g_v.push(vval); | |
335 | let bval = (((i as f32) - 128.0) * self.matrix[2][1]) as i16; | |
336 | self.b_chr.push(bval); | |
337 | } | |
338 | } | |
339 | } else { | |
340 | return Err(ScaleError::InvalidArgument); | |
341 | } | |
342 | for i in 0..MAX_CHROMATONS { | |
343 | if let Some(ref mut chr) = df.comp_info[i] { | |
344 | chr.packed = false; | |
345 | chr.comp_offs = i as u8; | |
346 | } | |
347 | } | |
348 | println!(" [intermediate format {}]", df); | |
349 | let res = alloc_video_buffer(NAVideoInfo::new(in_fmt.width, in_fmt.height, false, df), 3); | |
350 | if res.is_err() { return Err(ScaleError::AllocError); } | |
351 | Ok(res.unwrap()) | |
352 | } | |
353 | fn process(&mut self, pic_in: &NABufferType, pic_out: &mut NABufferType) { | |
354 | if let (Some(ref sbuf), Some(ref mut dbuf)) = (pic_in.get_vbuf(), pic_out.get_vbuf()) { | |
355 | let istrides = [sbuf.get_stride(0), sbuf.get_stride(1), sbuf.get_stride(2)]; | |
356 | let dstrides = [dbuf.get_stride(0), dbuf.get_stride(1), dbuf.get_stride(2)]; | |
357 | let (w, h) = sbuf.get_dimensions(0); | |
358 | if sbuf.get_info().get_format().get_num_comp() < 3 { | |
359 | return self.process_grayscale(sbuf, dbuf); | |
360 | } | |
361 | let (sv0, sh0) = sbuf.get_info().get_format().get_chromaton(1).unwrap().get_subsampling(); | |
362 | let (sv1, sh1) = sbuf.get_info().get_format().get_chromaton(2).unwrap().get_subsampling(); | |
363 | ||
364 | let uhmask = (1 << sh0) - 1; | |
365 | let vhmask = (1 << sh1) - 1; | |
366 | let mut roff = dbuf.get_offset(0); | |
367 | let mut goff = dbuf.get_offset(1); | |
368 | let mut boff = dbuf.get_offset(2); | |
369 | let mut yoff = sbuf.get_offset(0); | |
370 | let mut uoff = sbuf.get_offset(1); | |
371 | let mut voff = sbuf.get_offset(2); | |
372 | let src = sbuf.get_data(); | |
373 | let dst = dbuf.get_data_mut().unwrap(); | |
374 | if !self.yscale.is_empty() { | |
375 | for y in 0..h { | |
376 | for x in 0..w { | |
377 | let y = self.yscale[src[yoff + x] as usize]; | |
378 | let u = src[uoff + (x >> sv0)] as usize; | |
379 | let v = src[voff + (x >> sv1)] as usize; | |
380 | let r = y + self.r_chr[v]; | |
381 | let g = y + self.g_u[u] + self.g_v[v]; | |
382 | let b = y + self.b_chr[u]; | |
383 | dst[roff + x] = r.max(0).min(255) as u8; | |
384 | dst[goff + x] = g.max(0).min(255) as u8; | |
385 | dst[boff + x] = b.max(0).min(255) as u8; | |
386 | } | |
387 | roff += dstrides[0]; | |
388 | goff += dstrides[1]; | |
389 | boff += dstrides[2]; | |
390 | yoff += istrides[0]; | |
391 | if (y & uhmask) == uhmask { | |
392 | uoff += istrides[1]; | |
393 | } | |
394 | if (y & vhmask) == vhmask { | |
395 | voff += istrides[2]; | |
396 | } | |
397 | } | |
398 | return; | |
399 | } | |
400 | for y in 0..h { | |
401 | for x in 0..w { | |
402 | let y = f32::from(src[yoff + x]); | |
403 | let u = f32::from(i16::from(src[uoff + (x >> sv0)]) - 128); | |
404 | let v = f32::from(i16::from(src[voff + (x >> sv1)]) - 128); | |
405 | ||
406 | let (r, g, b) = matrix_mul(&self.matrix, y, u, v); | |
407 | dst[roff + x] = (r as i16).max(0).min(255) as u8; | |
408 | dst[goff + x] = (g as i16).max(0).min(255) as u8; | |
409 | dst[boff + x] = (b as i16).max(0).min(255) as u8; | |
410 | } | |
411 | roff += dstrides[0]; | |
412 | goff += dstrides[1]; | |
413 | boff += dstrides[2]; | |
414 | yoff += istrides[0]; | |
415 | if (y & uhmask) == uhmask { | |
416 | uoff += istrides[1]; | |
417 | } | |
418 | if (y & vhmask) == vhmask { | |
419 | voff += istrides[2]; | |
420 | } | |
421 | } | |
422 | } | |
423 | } | |
424 | } | |
425 | ||
426 | impl YuvToRgb { | |
427 | fn process_grayscale(&self, sbuf: &NAVideoBuffer<u8>, dbuf: &mut NAVideoBuffer<u8>) { | |
428 | let ystride = sbuf.get_stride(0); | |
429 | let dstrides = [dbuf.get_stride(0), dbuf.get_stride(1), dbuf.get_stride(2)]; | |
430 | let (w, h) = sbuf.get_dimensions(0); | |
431 | let mut roff = dbuf.get_offset(0); | |
432 | let mut goff = dbuf.get_offset(1); | |
433 | let mut boff = dbuf.get_offset(2); | |
434 | let mut yoff = sbuf.get_offset(0); | |
435 | let src = sbuf.get_data(); | |
436 | let dst = dbuf.get_data_mut().unwrap(); | |
437 | if !self.yscale.is_empty() { | |
438 | for _y in 0..h { | |
439 | for x in 0..w { | |
440 | let y = self.yscale[src[yoff + x] as usize]; | |
441 | let r = y + self.r_chr[128]; | |
442 | let g = y + self.g_u[128] + self.g_v[128]; | |
443 | let b = y + self.b_chr[128]; | |
444 | dst[roff + x] = r.max(0).min(255) as u8; | |
445 | dst[goff + x] = g.max(0).min(255) as u8; | |
446 | dst[boff + x] = b.max(0).min(255) as u8; | |
447 | } | |
448 | roff += dstrides[0]; | |
449 | goff += dstrides[1]; | |
450 | boff += dstrides[2]; | |
451 | yoff += ystride; | |
452 | } | |
453 | } else { | |
454 | for _y in 0..h { | |
455 | for x in 0..w { | |
456 | let y = f32::from(src[yoff + x]); | |
457 | let (r, g, b) = matrix_mul(&self.matrix, y, 0.0, 0.0); | |
458 | dst[roff + x] = (r as i16).max(0).min(255) as u8; | |
459 | dst[goff + x] = (g as i16).max(0).min(255) as u8; | |
460 | dst[boff + x] = (b as i16).max(0).min(255) as u8; | |
461 | } | |
462 | roff += dstrides[0]; | |
463 | goff += dstrides[1]; | |
464 | boff += dstrides[2]; | |
465 | yoff += ystride; | |
466 | } | |
467 | } | |
468 | } | |
469 | } | |
470 | ||
471 | pub fn create_yuv2rgb() -> Box<dyn Kernel> { | |
472 | Box::new(YuvToRgb::new()) | |
473 | } |