| 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 | } |