From 36d22d82aa202bb199967e9512281e9a53db42c9 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Sun, 7 Apr 2024 21:33:14 +0200 Subject: Adding upstream version 115.7.0esr. Signed-off-by: Daniel Baumann --- third_party/jpeg-xl/lib/jxl/enc_xyb.h | 56 +++++++++++++++++++++++++++++++++++ 1 file changed, 56 insertions(+) create mode 100644 third_party/jpeg-xl/lib/jxl/enc_xyb.h (limited to 'third_party/jpeg-xl/lib/jxl/enc_xyb.h') diff --git a/third_party/jpeg-xl/lib/jxl/enc_xyb.h b/third_party/jpeg-xl/lib/jxl/enc_xyb.h new file mode 100644 index 0000000000..fc902848ee --- /dev/null +++ b/third_party/jpeg-xl/lib/jxl/enc_xyb.h @@ -0,0 +1,56 @@ +// Copyright (c) the JPEG XL Project Authors. All rights reserved. +// +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +#ifndef LIB_JXL_ENC_XYB_H_ +#define LIB_JXL_ENC_XYB_H_ + +// Converts to XYB color space. + +#include "lib/jxl/base/compiler_specific.h" +#include "lib/jxl/base/data_parallel.h" +#include "lib/jxl/base/status.h" +#include "lib/jxl/enc_bit_writer.h" +#include "lib/jxl/image.h" +#include "lib/jxl/image_bundle.h" + +namespace jxl { + +// Converts any color space to XYB. If `linear` is not null, returns `linear` +// after filling it with a linear sRGB copy of `in`. Otherwise, returns `&in`. +// +// NOTE this return value can avoid an extra color conversion if `in` would +// later be passed to JxlButteraugliComparator. +const ImageBundle* ToXYB(const ImageBundle& in, ThreadPool* pool, + Image3F* JXL_RESTRICT xyb, const JxlCmsInterface& cms, + ImageBundle* JXL_RESTRICT linear = nullptr); + +void Image3FToXYB(const Image3F& in, const ColorEncoding& color_encoding, + float intensity_target, ThreadPool* pool, + Image3F* JXL_RESTRICT xyb, const JxlCmsInterface& cms); + +void LinearRGBRowToXYB(float* JXL_RESTRICT row0, float* JXL_RESTRICT row1, + float* JXL_RESTRICT row2, + const float* JXL_RESTRICT premul_absorb, size_t xsize); + +void ComputePremulAbsorb(float intensity_target, float* premul_absorb); + +// Transforms each color component of the given XYB image into the [0.0, 1.0] +// interval with an affine transform. +void ScaleXYB(Image3F* opsin); +void ScaleXYBRow(float* row0, float* row1, float* row2, size_t xsize); + +// Bt.601 to match JPEG/JFIF. Outputs _signed_ YCbCr values suitable for DCT, +// see F.1.1.3 of T.81 (because our data type is float, there is no need to add +// a bias to make the values unsigned). +Status RgbToYcbcr(const ImageF& r_plane, const ImageF& g_plane, + const ImageF& b_plane, ImageF* y_plane, ImageF* cb_plane, + ImageF* cr_plane, ThreadPool* pool); + +// DEPRECATED, used by opsin_image_wrapper. +Image3F OpsinDynamicsImage(const Image3B& srgb8, const JxlCmsInterface& cms); + +} // namespace jxl + +#endif // LIB_JXL_ENC_XYB_H_ -- cgit v1.2.3