X-Git-Url: https://git.nihav.org/?a=blobdiff_plain;f=nihav-core%2Fsrc%2Fscale%2Fcolorcvt.rs;fp=nihav-core%2Fsrc%2Fscale%2Fcolorcvt.rs;h=2e2f299fbadcf8e67c7af0f4d38e30374175a57b;hb=03accf760cf79bc56d7c6dc6e82cd885fb7e1e13;hp=0000000000000000000000000000000000000000;hpb=c7d8d94809fd5cdebc191c2ff86aa9c0c2d77dbf;p=nihav.git diff --git a/nihav-core/src/scale/colorcvt.rs b/nihav-core/src/scale/colorcvt.rs new file mode 100644 index 0000000..2e2f299 --- /dev/null +++ b/nihav-core/src/scale/colorcvt.rs @@ -0,0 +1,323 @@ +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 { + 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 { + 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 { + 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 { + Box::new(YuvToRgb::new()) +}