2 use super::kernel::Kernel;
4 const DEFAULT_YUV: usize = 4;
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
20 const BT_PAL_COEFFS: [f32; 2] = [ 0.493, 0.877 ];
22 const SMPTE_NTSC_COEFFS: &[f32; 4] = &[ -0.268, 0.7358, 0.4127, 0.4778 ];
24 /*const RGB2YCOCG: [[f32; 3]; 3] = [
26 [ -0.25, 0.5, -0.25 ],
29 const YCOCG2RGB: [[f32; 3]; 3] = [
35 const XYZ2RGB: [[f32; 3]; 3] = [
37 [ 0.17697, 0.8124, 0.01063 ],
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 ]
46 fn make_rgb2yuv(kr: f32, kb: f32, mat: &mut [[f32; 3]; 3]) {
49 mat[0][1] = 1.0 - kr - kb;
52 mat[1][0] = -mat[0][0] * 0.5 / (1.0 - kb);
53 mat[1][1] = -mat[0][1] * 0.5 / (1.0 - kb);
57 mat[2][1] = -mat[0][1] * 0.5 / (1.0 - kr);
58 mat[2][2] = -mat[0][2] * 0.5 / (1.0 - kr);
61 fn make_yuv2rgb(kr: f32, kb: f32, mat: &mut [[f32; 3]; 3]) {
62 let kg = 1.0 - kr - kb;
67 mat[0][2] = 2.0 * (1.0 - kr);
70 mat[1][1] = -kb * 2.0 * (1.0 - kb) / kg;
71 mat[1][2] = -kr * 2.0 * (1.0 - kr) / kg;
74 mat[2][1] = 2.0 * (1.0 - kb);
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;
85 mat[1][2] = eu * (1.0 - mat[0][2]);
87 mat[2][0] = ev * (1.0 - mat[0][0]);
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);
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];
111 tmp[0][i] = mat[1][i] * ufac;
112 tmp[1][i] = mat[2][i] * vfac;
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];
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 };
126 let det = mat[row0][col0] * mat[row1][col1] - mat[row0][col1] * mat[row1][col0];
127 if ((col ^ row) & 1) == 0 {
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();
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;
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] )
165 matrix: [[f32; 3]; 3],
169 fn new() -> Self { Self::default() }
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() {
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); },
185 return Err(ScaleError::InvalidArgument);
187 for i in 0..MAX_CHROMATONS {
188 if let Some(ref mut chr) = df.comp_info[i] {
190 chr.comp_offs = i as u8;
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); }
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);
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);
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();
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);
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;
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);
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();
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);
258 dst[yoff + x] = (y as i16).max(0).min(255) as u8;
268 pub fn create_rgb2yuv() -> Box<dyn Kernel> {
269 Box::new(RgbToYuv::new())
274 matrix: [[f32; 3]; 3],
283 fn new() -> Self { Self::default() }
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;
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,
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 }),
299 elem_size: 3, be: false, alpha: false, palette: false };
300 if in_fmt.fmt.alpha && dest_fmt.fmt.alpha {
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 });
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() {
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);
316 YUVSubmodel::YUVJ => {
317 apply_pal_yuv2rgb(BT_PAL_COEFFS[0], BT_PAL_COEFFS[1], &mut self.matrix);
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);
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;
333 let vval = (((i as f32) - 128.0) * self.matrix[1][2]) as i16;
335 let bval = (((i as f32) - 128.0) * self.matrix[2][1]) as i16;
336 self.b_chr.push(bval);
340 return Err(ScaleError::InvalidArgument);
342 for i in 0..MAX_CHROMATONS {
343 if let Some(ref mut chr) = df.comp_info[i] {
345 chr.comp_offs = i as u8;
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); }
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);
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();
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() {
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;
391 if (y & uhmask) == uhmask {
394 if (y & vhmask) == vhmask {
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);
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;
415 if (y & uhmask) == uhmask {
418 if (y & vhmask) == vhmask {
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() {
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;
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;
471 pub fn create_yuv2rgb() -> Box<dyn Kernel> {
472 Box::new(YuvToRgb::new())