From 2c3c1048746a4622d8c89a29670120dc8fab93c4 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Sun, 7 Apr 2024 20:49:45 +0200 Subject: Adding upstream version 6.1.76. Signed-off-by: Daniel Baumann --- drivers/gpu/ipu-v3/ipu-ic-csc.c | 409 ++++++++++++++++++++++++++++++++++++++++ 1 file changed, 409 insertions(+) create mode 100644 drivers/gpu/ipu-v3/ipu-ic-csc.c (limited to 'drivers/gpu/ipu-v3/ipu-ic-csc.c') diff --git a/drivers/gpu/ipu-v3/ipu-ic-csc.c b/drivers/gpu/ipu-v3/ipu-ic-csc.c new file mode 100644 index 000000000..d1ca7ba94 --- /dev/null +++ b/drivers/gpu/ipu-v3/ipu-ic-csc.c @@ -0,0 +1,409 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * Copyright (C) 2019 Mentor Graphics Inc. + */ + +#include +#include +#include +#include +#include +#include "ipu-prv.h" + +#define QUANT_MAP(q) \ + ((q) == V4L2_QUANTIZATION_FULL_RANGE || \ + (q) == V4L2_QUANTIZATION_DEFAULT ? 0 : 1) + +/* identity matrix */ +static const struct ipu_ic_csc_params identity = { + .coeff = { + { 128, 0, 0, }, + { 0, 128, 0, }, + { 0, 0, 128, }, + }, + .offset = { 0, 0, 0, }, + .scale = 2, +}; + +/* + * RGB full-range to RGB limited-range + * + * R_lim = 0.8588 * R_full + 16 + * G_lim = 0.8588 * G_full + 16 + * B_lim = 0.8588 * B_full + 16 + */ +static const struct ipu_ic_csc_params rgbf2rgbl = { + .coeff = { + { 220, 0, 0, }, + { 0, 220, 0, }, + { 0, 0, 220, }, + }, + .offset = { 64, 64, 64, }, + .scale = 1, +}; + +/* + * RGB limited-range to RGB full-range + * + * R_full = 1.1644 * (R_lim - 16) + * G_full = 1.1644 * (G_lim - 16) + * B_full = 1.1644 * (B_lim - 16) + */ +static const struct ipu_ic_csc_params rgbl2rgbf = { + .coeff = { + { 149, 0, 0, }, + { 0, 149, 0, }, + { 0, 0, 149, }, + }, + .offset = { -37, -37, -37, }, + .scale = 2, +}; + +/* + * YUV full-range to YUV limited-range + * + * Y_lim = 0.8588 * Y_full + 16 + * Cb_lim = 0.8784 * (Cb_full - 128) + 128 + * Cr_lim = 0.8784 * (Cr_full - 128) + 128 + */ +static const struct ipu_ic_csc_params yuvf2yuvl = { + .coeff = { + { 220, 0, 0, }, + { 0, 225, 0, }, + { 0, 0, 225, }, + }, + .offset = { 64, 62, 62, }, + .scale = 1, + .sat = true, +}; + +/* + * YUV limited-range to YUV full-range + * + * Y_full = 1.1644 * (Y_lim - 16) + * Cb_full = 1.1384 * (Cb_lim - 128) + 128 + * Cr_full = 1.1384 * (Cr_lim - 128) + 128 + */ +static const struct ipu_ic_csc_params yuvl2yuvf = { + .coeff = { + { 149, 0, 0, }, + { 0, 146, 0, }, + { 0, 0, 146, }, + }, + .offset = { -37, -35, -35, }, + .scale = 2, +}; + +static const struct ipu_ic_csc_params *rgb2rgb[] = { + &identity, + &rgbf2rgbl, + &rgbl2rgbf, + &identity, +}; + +static const struct ipu_ic_csc_params *yuv2yuv[] = { + &identity, + &yuvf2yuvl, + &yuvl2yuvf, + &identity, +}; + +/* + * BT.601 RGB full-range to YUV full-range + * + * Y = .2990 * R + .5870 * G + .1140 * B + * U = -.1687 * R - .3313 * G + .5000 * B + 128 + * V = .5000 * R - .4187 * G - .0813 * B + 128 + */ +static const struct ipu_ic_csc_params rgbf2yuvf_601 = { + .coeff = { + { 77, 150, 29, }, + { -43, -85, 128, }, + { 128, -107, -21, }, + }, + .offset = { 0, 512, 512, }, + .scale = 1, +}; + +/* BT.601 RGB full-range to YUV limited-range */ +static const struct ipu_ic_csc_params rgbf2yuvl_601 = { + .coeff = { + { 66, 129, 25, }, + { -38, -74, 112, }, + { 112, -94, -18, }, + }, + .offset = { 64, 512, 512, }, + .scale = 1, + .sat = true, +}; + +/* BT.601 RGB limited-range to YUV full-range */ +static const struct ipu_ic_csc_params rgbl2yuvf_601 = { + .coeff = { + { 89, 175, 34, }, + { -50, -99, 149, }, + { 149, -125, -24, }, + }, + .offset = { -75, 512, 512, }, + .scale = 1, +}; + +/* BT.601 RGB limited-range to YUV limited-range */ +static const struct ipu_ic_csc_params rgbl2yuvl_601 = { + .coeff = { + { 77, 150, 29, }, + { -44, -87, 131, }, + { 131, -110, -21, }, + }, + .offset = { 0, 512, 512, }, + .scale = 1, + .sat = true, +}; + +/* + * BT.601 YUV full-range to RGB full-range + * + * R = 1. * Y + 0 * (Cb - 128) + 1.4020 * (Cr - 128) + * G = 1. * Y - .3441 * (Cb - 128) - .7141 * (Cr - 128) + * B = 1. * Y + 1.7720 * (Cb - 128) + 0 * (Cr - 128) + * + * equivalently (factoring out the offsets): + * + * R = 1. * Y + 0 * Cb + 1.4020 * Cr - 179.456 + * G = 1. * Y - .3441 * Cb - .7141 * Cr + 135.450 + * B = 1. * Y + 1.7720 * Cb + 0 * Cr - 226.816 + */ +static const struct ipu_ic_csc_params yuvf2rgbf_601 = { + .coeff = { + { 128, 0, 179, }, + { 128, -44, -91, }, + { 128, 227, 0, }, + }, + .offset = { -359, 271, -454, }, + .scale = 2, +}; + +/* BT.601 YUV full-range to RGB limited-range */ +static const struct ipu_ic_csc_params yuvf2rgbl_601 = { + .coeff = { + { 110, 0, 154, }, + { 110, -38, -78, }, + { 110, 195, 0, }, + }, + .offset = { -276, 265, -358, }, + .scale = 2, +}; + +/* BT.601 YUV limited-range to RGB full-range */ +static const struct ipu_ic_csc_params yuvl2rgbf_601 = { + .coeff = { + { 75, 0, 102, }, + { 75, -25, -52, }, + { 75, 129, 0, }, + }, + .offset = { -223, 136, -277, }, + .scale = 3, +}; + +/* BT.601 YUV limited-range to RGB limited-range */ +static const struct ipu_ic_csc_params yuvl2rgbl_601 = { + .coeff = { + { 128, 0, 175, }, + { 128, -43, -89, }, + { 128, 222, 0, }, + }, + .offset = { -351, 265, -443, }, + .scale = 2, +}; + +static const struct ipu_ic_csc_params *rgb2yuv_601[] = { + &rgbf2yuvf_601, + &rgbf2yuvl_601, + &rgbl2yuvf_601, + &rgbl2yuvl_601, +}; + +static const struct ipu_ic_csc_params *yuv2rgb_601[] = { + &yuvf2rgbf_601, + &yuvf2rgbl_601, + &yuvl2rgbf_601, + &yuvl2rgbl_601, +}; + +/* + * REC.709 encoding from RGB full range to YUV full range: + * + * Y = .2126 * R + .7152 * G + .0722 * B + * U = -.1146 * R - .3854 * G + .5000 * B + 128 + * V = .5000 * R - .4542 * G - .0458 * B + 128 + */ +static const struct ipu_ic_csc_params rgbf2yuvf_709 = { + .coeff = { + { 54, 183, 19 }, + { -29, -99, 128 }, + { 128, -116, -12 }, + }, + .offset = { 0, 512, 512 }, + .scale = 1, +}; + +/* Rec.709 RGB full-range to YUV limited-range */ +static const struct ipu_ic_csc_params rgbf2yuvl_709 = { + .coeff = { + { 47, 157, 16, }, + { -26, -87, 112, }, + { 112, -102, -10, }, + }, + .offset = { 64, 512, 512, }, + .scale = 1, + .sat = true, +}; + +/* Rec.709 RGB limited-range to YUV full-range */ +static const struct ipu_ic_csc_params rgbl2yuvf_709 = { + .coeff = { + { 63, 213, 22, }, + { -34, -115, 149, }, + { 149, -135, -14, }, + }, + .offset = { -75, 512, 512, }, + .scale = 1, +}; + +/* Rec.709 RGB limited-range to YUV limited-range */ +static const struct ipu_ic_csc_params rgbl2yuvl_709 = { + .coeff = { + { 54, 183, 18, }, + { -30, -101, 131, }, + { 131, -119, -12, }, + }, + .offset = { 0, 512, 512, }, + .scale = 1, + .sat = true, +}; + +/* + * Inverse REC.709 encoding from YUV full range to RGB full range: + * + * R = 1. * Y + 0 * (Cb - 128) + 1.5748 * (Cr - 128) + * G = 1. * Y - .1873 * (Cb - 128) - .4681 * (Cr - 128) + * B = 1. * Y + 1.8556 * (Cb - 128) + 0 * (Cr - 128) + * + * equivalently (factoring out the offsets): + * + * R = 1. * Y + 0 * Cb + 1.5748 * Cr - 201.574 + * G = 1. * Y - .1873 * Cb - .4681 * Cr + 83.891 + * B = 1. * Y + 1.8556 * Cb + 0 * Cr - 237.517 + */ +static const struct ipu_ic_csc_params yuvf2rgbf_709 = { + .coeff = { + { 128, 0, 202 }, + { 128, -24, -60 }, + { 128, 238, 0 }, + }, + .offset = { -403, 168, -475 }, + .scale = 2, +}; + +/* Rec.709 YUV full-range to RGB limited-range */ +static const struct ipu_ic_csc_params yuvf2rgbl_709 = { + .coeff = { + { 110, 0, 173, }, + { 110, -21, -51, }, + { 110, 204, 0, }, + }, + .offset = { -314, 176, -376, }, + .scale = 2, +}; + +/* Rec.709 YUV limited-range to RGB full-range */ +static const struct ipu_ic_csc_params yuvl2rgbf_709 = { + .coeff = { + { 75, 0, 115, }, + { 75, -14, -34, }, + { 75, 135, 0, }, + }, + .offset = { -248, 77, -289, }, + .scale = 3, +}; + +/* Rec.709 YUV limited-range to RGB limited-range */ +static const struct ipu_ic_csc_params yuvl2rgbl_709 = { + .coeff = { + { 128, 0, 197, }, + { 128, -23, -59, }, + { 128, 232, 0, }, + }, + .offset = { -394, 164, -464, }, + .scale = 2, +}; + +static const struct ipu_ic_csc_params *rgb2yuv_709[] = { + &rgbf2yuvf_709, + &rgbf2yuvl_709, + &rgbl2yuvf_709, + &rgbl2yuvl_709, +}; + +static const struct ipu_ic_csc_params *yuv2rgb_709[] = { + &yuvf2rgbf_709, + &yuvf2rgbl_709, + &yuvl2rgbf_709, + &yuvl2rgbl_709, +}; + +static int calc_csc_coeffs(struct ipu_ic_csc *csc) +{ + const struct ipu_ic_csc_params **params_tbl; + int tbl_idx; + + tbl_idx = (QUANT_MAP(csc->in_cs.quant) << 1) | + QUANT_MAP(csc->out_cs.quant); + + if (csc->in_cs.cs == csc->out_cs.cs) { + csc->params = (csc->in_cs.cs == IPUV3_COLORSPACE_YUV) ? + *yuv2yuv[tbl_idx] : *rgb2rgb[tbl_idx]; + + return 0; + } + + /* YUV <-> RGB encoding is required */ + + switch (csc->out_cs.enc) { + case V4L2_YCBCR_ENC_601: + params_tbl = (csc->in_cs.cs == IPUV3_COLORSPACE_YUV) ? + yuv2rgb_601 : rgb2yuv_601; + break; + case V4L2_YCBCR_ENC_709: + params_tbl = (csc->in_cs.cs == IPUV3_COLORSPACE_YUV) ? + yuv2rgb_709 : rgb2yuv_709; + break; + default: + return -ENOTSUPP; + } + + csc->params = *params_tbl[tbl_idx]; + + return 0; +} + +int __ipu_ic_calc_csc(struct ipu_ic_csc *csc) +{ + return calc_csc_coeffs(csc); +} +EXPORT_SYMBOL_GPL(__ipu_ic_calc_csc); + +int ipu_ic_calc_csc(struct ipu_ic_csc *csc, + enum v4l2_ycbcr_encoding in_enc, + enum v4l2_quantization in_quant, + enum ipu_color_space in_cs, + enum v4l2_ycbcr_encoding out_enc, + enum v4l2_quantization out_quant, + enum ipu_color_space out_cs) +{ + ipu_ic_fill_colorspace(&csc->in_cs, in_enc, in_quant, in_cs); + ipu_ic_fill_colorspace(&csc->out_cs, out_enc, out_quant, out_cs); + + return __ipu_ic_calc_csc(csc); +} +EXPORT_SYMBOL_GPL(ipu_ic_calc_csc); -- cgit v1.2.3