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