--- /dev/null
+use super::*;
+use super::kernel::Kernel;
+
+const YUV_PARAMS: &[[f32; 2]] = &[
+ [ 0.333, 0.333 ], // RGB
+ [ 0.2126, 0.0722 ], // ITU-R BT709
+ [ 0.333, 0.333 ], // unspecified
+ [ 0.333, 0.333 ], // reserved
+ [ 0.299, 0.114 ], // ITU-R BT601
+ [ 0.299, 0.114 ], // ITU-R BT470
+ [ 0.299, 0.114 ], // SMPTE 170M
+ [ 0.212, 0.087 ], // SMPTE 240M
+ [ 0.333, 0.333 ], // YCoCg
+ [ 0.2627, 0.0593 ], // ITU-R BT2020
+ [ 0.2627, 0.0593 ], // ITU-R BT2020
+];
+
+const BT_PAL_COEFFS: [f32; 2] = [ 0.493, 0.877 ];
+
+const SMPTE_NTSC_COEFFS: &[f32; 4] = &[ -0.268, 0.7358, 0.4127, 0.4778 ];
+
+/*const RGB2YCOCG: [[f32; 3]; 3] = [
+ [ 0.25, 0.5, 0.25 ],
+ [ -0.25, 0.5, -0.25 ],
+ [ 0.5, 0.0, -0.5 ]
+];
+const YCOCG2RGB: [[f32; 3]; 3] = [
+ [ 1.0, -1.0, 1.0 ],
+ [ 1.0, 1.0, 0.0 ],
+ [ 1.0, -1.0, -1.0 ]
+];
+
+const XYZ2RGB: [[f32; 3]; 3] = [
+ [ 0.49, 0.31, 0.2 ],
+ [ 0.17697, 0.8124, 0.01063 ],
+ [ 0.0, 0.01, 0.99 ]
+];
+const RGB2XYZ: [[f32; 3]; 3] = [
+ [ 2.364613, -0.89654, -0.46807 ],
+ [ -0.515167, 1.42641, 0.08876 ],
+ [ 0.0052, -0.01441, 1.00920 ]
+];*/
+
+fn make_rgb2yuv(kr: f32, kb: f32, mat: &mut [[f32; 3]; 3]) {
+ // Y
+ mat[0][0] = kr;
+ mat[0][1] = 1.0 - kr - kb;
+ mat[0][2] = kb;
+ // Cb
+ mat[1][0] = -mat[0][0] * 0.5 / (1.0 - kb);
+ mat[1][1] = -mat[0][1] * 0.5 / (1.0 - kb);
+ mat[1][2] = 0.5;
+ // Cr
+ mat[2][0] = 0.5;
+ mat[2][1] = -mat[0][1] * 0.5 / (1.0 - kr);
+ mat[2][2] = -mat[0][2] * 0.5 / (1.0 - kr);
+}
+
+fn make_yuv2rgb(kr: f32, kb: f32, mat: &mut [[f32; 3]; 3]) {
+ let kg = 1.0 - kr - kb;
+
+ // R
+ mat[0][0] = 1.0;
+ mat[0][1] = 0.0;
+ mat[0][2] = 2.0 * (1.0 - kr);
+ // G
+ mat[1][0] = 1.0;
+ mat[1][1] = -kb * 2.0 * (1.0 - kb) / kg;
+ mat[1][2] = -kr * 2.0 * (1.0 - kr) / kg;
+ // B
+ mat[2][0] = 1.0;
+ mat[2][1] = 2.0 * (1.0 - kb);
+ mat[2][2] = 0.0;
+}
+
+fn apply_pal_rgb2yuv(eu: f32, ev: f32, mat: &mut [[f32; 3]; 3]) {
+ let ufac = 2.0 * (1.0 - mat[0][2]) * eu;
+ let vfac = 2.0 * (1.0 - mat[0][0]) * ev;
+
+ // U
+ mat[1][0] *= ufac;
+ mat[1][1] *= ufac;
+ mat[1][2] = eu * (1.0 - mat[0][2]);
+ // V
+ mat[2][0] = ev * (1.0 - mat[0][0]);
+ mat[2][1] *= vfac;
+ mat[2][2] *= vfac;
+}
+
+fn apply_pal_yuv2rgb(eu: f32, ev: f32, mat: &mut [[f32; 3]; 3]) {
+ let ufac = 1.0 / (mat[2][1] * eu);
+ let vfac = 1.0 / (mat[0][2] * ev);
+
+ // R
+ mat[0][2] *= vfac;
+ // G
+ mat[1][1] *= ufac;
+ mat[1][2] *= vfac;
+ // B
+ mat[2][1] *= ufac;
+}
+
+fn apply_ntsc_rgb2yiq(params: &[f32; 4], mat: &mut [[f32; 3]; 3]) {
+ let ufac = 2.0 * (1.0 - mat[0][2]);
+ let vfac = 2.0 * (1.0 - mat[0][0]);
+ let mut tmp: [[f32; 3]; 2] = [[0.0; 3]; 2];
+
+ for i in 0..3 {
+ tmp[0][i] = mat[1][i] * ufac;
+ tmp[1][i] = mat[2][i] * vfac;
+ }
+ for i in 0..3 {
+ mat[1][i] = params[0] * tmp[0][i] + params[1] * tmp[1][i];
+ mat[2][i] = params[2] * tmp[0][i] + params[3] * tmp[1][i];
+ }
+}
+
+fn subm_det(mat: &[[f32; 3]; 3], col: usize, row: usize) -> f32 {
+ let row0 = if row == 0 { 1 } else { 0 };
+ let row1 = if (row == 1) || (row0 == 1) { 2 } else { 1 };
+ let col0 = if col == 0 { 1 } else { 0 };
+ let col1 = if (col == 1) || (col0 == 1) { 2 } else { 1 };
+
+ let det = mat[row0][col0] * mat[row1][col1] - mat[row0][col1] * mat[row1][col0];
+ if ((col ^ row) & 1) == 0 {
+ det
+ } else {
+ -det
+ }
+}
+
+fn invert_matrix(mat: &mut [[f32; 3]; 3]) {
+ let d00 = subm_det(mat, 0, 0);
+ let d01 = subm_det(mat, 0, 1);
+ let d02 = subm_det(mat, 0, 2);
+ let d10 = subm_det(mat, 1, 0);
+ let d11 = subm_det(mat, 1, 1);
+ let d12 = subm_det(mat, 1, 2);
+ let d20 = subm_det(mat, 2, 0);
+ let d21 = subm_det(mat, 2, 1);
+ let d22 = subm_det(mat, 2, 2);
+ let det = 1.0 / (mat[0][0] * d00 + mat[0][1] * d10 + mat[0][2] * d20).abs();
+
+ mat[0][0] = det * d00;
+ mat[0][1] = det * d01;
+ mat[0][2] = det * d02;
+ mat[1][0] = det * d10;
+ mat[1][1] = det * d11;
+ mat[1][2] = det * d12;
+ mat[2][0] = det * d20;
+ mat[2][1] = det * d21;
+ mat[2][2] = det * d22;
+}
+
+fn matrix_mul(mat: &[[f32; 3]; 3], a: f32, b: f32, c: f32) -> (f32, f32, f32) {
+ (a * mat[0][0] + b * mat[0][1] + c * mat[0][2],
+ a * mat[1][0] + b * mat[1][1] + c * mat[1][2],
+ a * mat[2][0] + b * mat[2][1] + c * mat[2][2] )
+}
+
+#[derive(Default)]
+struct RgbToYuv {
+ matrix: [[f32; 3]; 3],
+}
+
+impl RgbToYuv {
+ fn new() -> Self { Self::default() }
+}
+
+impl Kernel for RgbToYuv {
+ fn init(&mut self, in_fmt: &ScaleInfo, dest_fmt: &ScaleInfo) -> ScaleResult<NABufferType> {
+ let mut df = dest_fmt.fmt;
+//todo coeff selection
+ make_rgb2yuv(YUV_PARAMS[2][0], YUV_PARAMS[2][1], &mut self.matrix);
+ if let ColorModel::YUV(yuvsm) = df.get_model() {
+ match yuvsm {
+ YUVSubmodel::YCbCr => {},
+ YUVSubmodel::YIQ => { apply_ntsc_rgb2yiq(SMPTE_NTSC_COEFFS, &mut self.matrix); },
+ YUVSubmodel::YUVJ => { apply_pal_rgb2yuv(BT_PAL_COEFFS[0], BT_PAL_COEFFS[1], &mut self.matrix); },
+ };
+ } else {
+ return Err(ScaleError::InvalidArgument);
+ }
+ for i in 0..MAX_CHROMATONS {
+ if let Some(ref mut chr) = df.comp_info[i] {
+ chr.packed = false;
+ chr.comp_offs = i as u8;
+ chr.h_ss = 0;
+ chr.v_ss = 0;
+ }
+ }
+println!(" [intermediate format {}]", df);
+ let res = alloc_video_buffer(NAVideoInfo::new(in_fmt.width, in_fmt.height, false, df), 3);
+ if res.is_err() { return Err(ScaleError::AllocError); }
+ Ok(res.unwrap())
+ }
+ fn process(&mut self, pic_in: &NABufferType, pic_out: &mut NABufferType) {
+ if let (Some(ref sbuf), Some(ref mut dbuf)) = (pic_in.get_vbuf(), pic_out.get_vbuf()) {
+ let istrides = [sbuf.get_stride(0), sbuf.get_stride(1), sbuf.get_stride(2)];
+ let dstrides = [dbuf.get_stride(0), dbuf.get_stride(1), dbuf.get_stride(2)];
+ let (w, h) = sbuf.get_dimensions(0);
+
+ let mut roff = sbuf.get_offset(0);
+ let mut goff = sbuf.get_offset(1);
+ let mut boff = sbuf.get_offset(2);
+ let mut yoff = dbuf.get_offset(0);
+ let mut uoff = dbuf.get_offset(1);
+ let mut voff = dbuf.get_offset(2);
+ let src = sbuf.get_data();
+ let dst = dbuf.get_data_mut().unwrap();
+ for _y in 0..h {
+ for x in 0..w {
+ let r = src[roff + x] as f32;
+ let g = src[goff + x] as f32;
+ let b = src[boff + x] as f32;
+ let (y, u, v) = matrix_mul(&self.matrix, r, g, b);
+
+ dst[yoff + x] = (y as i16).max(0).min(255) as u8;
+ dst[uoff + x] = ((u as i16).max(-128).min(128) + 128) as u8;
+ dst[voff + x] = ((v as i16).max(-128).min(128) + 128) as u8;
+ }
+ roff += istrides[0];
+ goff += istrides[1];
+ boff += istrides[2];
+ yoff += dstrides[0];
+ uoff += dstrides[1];
+ voff += dstrides[2];
+ }
+ }
+ }
+}
+
+pub fn create_rgb2yuv() -> Box<Kernel> {
+ Box::new(RgbToYuv::new())
+}
+
+#[derive(Default)]
+struct YuvToRgb {
+ matrix: [[f32; 3]; 3],
+}
+
+impl YuvToRgb {
+ fn new() -> Self { Self::default() }
+}
+
+impl Kernel for YuvToRgb {
+ fn init(&mut self, in_fmt: &ScaleInfo, dest_fmt: &ScaleInfo) -> ScaleResult<NABufferType> {
+ let mut df = dest_fmt.fmt;
+//todo coeff selection
+ make_yuv2rgb(YUV_PARAMS[2][0], YUV_PARAMS[2][1], &mut self.matrix);
+ if let ColorModel::YUV(yuvsm) = in_fmt.fmt.get_model() {
+ match yuvsm {
+ YUVSubmodel::YCbCr => {},
+ YUVSubmodel::YIQ => {
+ make_rgb2yuv(YUV_PARAMS[2][0], YUV_PARAMS[2][1], &mut self.matrix);
+ apply_ntsc_rgb2yiq(SMPTE_NTSC_COEFFS, &mut self.matrix);
+ invert_matrix(&mut self.matrix);
+ },
+ YUVSubmodel::YUVJ => {
+ apply_pal_yuv2rgb(BT_PAL_COEFFS[0], BT_PAL_COEFFS[1], &mut self.matrix);
+ },
+ };
+ } else {
+ return Err(ScaleError::InvalidArgument);
+ }
+ for i in 0..MAX_CHROMATONS {
+ if let Some(ref mut chr) = df.comp_info[i] {
+ chr.packed = false;
+ chr.comp_offs = i as u8;
+ }
+ }
+println!(" [intermediate format {}]", df);
+ let res = alloc_video_buffer(NAVideoInfo::new(in_fmt.width, in_fmt.height, false, df), 3);
+ if res.is_err() { return Err(ScaleError::AllocError); }
+ Ok(res.unwrap())
+ }
+ fn process(&mut self, pic_in: &NABufferType, pic_out: &mut NABufferType) {
+ if let (Some(ref sbuf), Some(ref mut dbuf)) = (pic_in.get_vbuf(), pic_out.get_vbuf()) {
+ let istrides = [sbuf.get_stride(0), sbuf.get_stride(1), sbuf.get_stride(2)];
+ let dstrides = [dbuf.get_stride(0), dbuf.get_stride(1), dbuf.get_stride(2)];
+ let (w, h) = sbuf.get_dimensions(0);
+ let (sv0, sh0) = sbuf.get_info().get_format().get_chromaton(1).unwrap().get_subsampling();
+ let (sv1, sh1) = sbuf.get_info().get_format().get_chromaton(2).unwrap().get_subsampling();
+
+ let uhmask = (1 << sh0) - 1;
+ let vhmask = (1 << sh1) - 1;
+ let mut roff = dbuf.get_offset(0);
+ let mut goff = dbuf.get_offset(1);
+ let mut boff = dbuf.get_offset(2);
+ let mut yoff = sbuf.get_offset(0);
+ let mut uoff = sbuf.get_offset(1);
+ let mut voff = sbuf.get_offset(2);
+ let src = sbuf.get_data();
+ let dst = dbuf.get_data_mut().unwrap();
+ for y in 0..h {
+ for x in 0..w {
+ let y = src[yoff + x] as f32;
+ let u = ((src[uoff + (x >> sv0)] as i16) - 128) as f32;
+ let v = ((src[voff + (x >> sv1)] as i16) - 128) as f32;
+
+ let (r, g, b) = matrix_mul(&self.matrix, y, u, v);
+ dst[roff + x] = (r as i16).max(0).min(255) as u8;
+ dst[goff + x] = (g as i16).max(0).min(255) as u8;
+ dst[boff + x] = (b as i16).max(0).min(255) as u8;
+ }
+ roff += dstrides[0];
+ goff += dstrides[1];
+ boff += dstrides[2];
+ yoff += istrides[0];
+ if (y & uhmask) == uhmask {
+ uoff += istrides[1];
+ }
+ if (y & vhmask) == vhmask {
+ voff += istrides[2];
+ }
+ }
+ }
+ }
+}
+
+pub fn create_yuv2rgb() -> Box<Kernel> {
+ Box::new(YuvToRgb::new())
+}
projects / nihav.git / blobdiff