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Diffstat (limited to '')
-rw-r--r-- | third_party/jpeg-xl/lib/jxl/enc_color_management.h | 90 |
1 files changed, 90 insertions, 0 deletions
diff --git a/third_party/jpeg-xl/lib/jxl/enc_color_management.h b/third_party/jpeg-xl/lib/jxl/enc_color_management.h new file mode 100644 index 0000000000..6f6e9023a6 --- /dev/null +++ b/third_party/jpeg-xl/lib/jxl/enc_color_management.h @@ -0,0 +1,90 @@ +// 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_COLOR_MANAGEMENT_H_ +#define LIB_JXL_ENC_COLOR_MANAGEMENT_H_ + +// ICC profiles and color space conversions. + +#include <jxl/cms_interface.h> +#include <stddef.h> +#include <stdint.h> + +#include <vector> + +#include "lib/jxl/base/padded_bytes.h" +#include "lib/jxl/base/status.h" +#include "lib/jxl/color_encoding_internal.h" +#include "lib/jxl/color_management.h" +#include "lib/jxl/common.h" +#include "lib/jxl/image.h" + +namespace jxl { + +// Internal C++ wrapper for a JxlCmsInterface. +class ColorSpaceTransform { + public: + explicit ColorSpaceTransform(const JxlCmsInterface& cms) : cms_(cms) {} + ~ColorSpaceTransform() { + if (cms_data_ != nullptr) { + cms_.destroy(cms_data_); + } + } + + // Cannot copy. + ColorSpaceTransform(const ColorSpaceTransform&) = delete; + ColorSpaceTransform& operator=(const ColorSpaceTransform&) = delete; + + Status Init(const ColorEncoding& c_src, const ColorEncoding& c_dst, + float intensity_target, size_t xsize, size_t num_threads) { + xsize_ = xsize; + JxlColorProfile input_profile; + icc_src_ = c_src.ICC(); + input_profile.icc.data = icc_src_.data(); + input_profile.icc.size = icc_src_.size(); + ConvertInternalToExternalColorEncoding(c_src, + &input_profile.color_encoding); + input_profile.num_channels = c_src.IsCMYK() ? 4 : c_src.Channels(); + JxlColorProfile output_profile; + icc_dst_ = c_dst.ICC(); + output_profile.icc.data = icc_dst_.data(); + output_profile.icc.size = icc_dst_.size(); + ConvertInternalToExternalColorEncoding(c_dst, + &output_profile.color_encoding); + if (c_dst.IsCMYK()) + return JXL_FAILURE("Conversion to CMYK is not supported"); + output_profile.num_channels = c_dst.Channels(); + cms_data_ = cms_.init(cms_.init_data, num_threads, xsize, &input_profile, + &output_profile, intensity_target); + JXL_RETURN_IF_ERROR(cms_data_ != nullptr); + return true; + } + + float* BufSrc(const size_t thread) const { + return cms_.get_src_buf(cms_data_, thread); + } + + float* BufDst(const size_t thread) const { + return cms_.get_dst_buf(cms_data_, thread); + } + + Status Run(const size_t thread, const float* buf_src, float* buf_dst) { + return cms_.run(cms_data_, thread, buf_src, buf_dst, xsize_); + } + + private: + JxlCmsInterface cms_; + void* cms_data_ = nullptr; + // The interface may retain pointers into these. + PaddedBytes icc_src_; + PaddedBytes icc_dst_; + size_t xsize_; +}; + +const JxlCmsInterface& GetJxlCms(); + +} // namespace jxl + +#endif // LIB_JXL_ENC_COLOR_MANAGEMENT_H_ |