diff options
Diffstat (limited to 'third_party/jpeg-xl/lib/jxl/icc_codec_common.h')
| -rw-r--r-- | third_party/jpeg-xl/lib/jxl/icc_codec_common.h | 106 |
1 files changed, 106 insertions, 0 deletions
diff --git a/third_party/jpeg-xl/lib/jxl/icc_codec_common.h b/third_party/jpeg-xl/lib/jxl/icc_codec_common.h new file mode 100644 index 0000000000..e91e908669 --- /dev/null +++ b/third_party/jpeg-xl/lib/jxl/icc_codec_common.h @@ -0,0 +1,106 @@ +// 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_ICC_CODEC_COMMON_H_ +#define LIB_JXL_ICC_CODEC_COMMON_H_ + +// Compressed representation of ICC profiles. + +#include <stddef.h> +#include <stdint.h> + +#include <array> + +#include "lib/jxl/base/padded_bytes.h" +#include "lib/jxl/base/status.h" + +namespace jxl { + +static constexpr size_t kICCHeaderSize = 128; + +typedef std::array<uint8_t, 4> Tag; + +static const Tag kAcspTag = {{'a', 'c', 's', 'p'}}; +static const Tag kBkptTag = {{'b', 'k', 'p', 't'}}; +static const Tag kBtrcTag = {{'b', 'T', 'R', 'C'}}; +static const Tag kBxyzTag = {{'b', 'X', 'Y', 'Z'}}; +static const Tag kChadTag = {{'c', 'h', 'a', 'd'}}; +static const Tag kChrmTag = {{'c', 'h', 'r', 'm'}}; +static const Tag kCprtTag = {{'c', 'p', 'r', 't'}}; +static const Tag kCurvTag = {{'c', 'u', 'r', 'v'}}; +static const Tag kDescTag = {{'d', 'e', 's', 'c'}}; +static const Tag kDmddTag = {{'d', 'm', 'd', 'd'}}; +static const Tag kDmndTag = {{'d', 'm', 'n', 'd'}}; +static const Tag kGbd_Tag = {{'g', 'b', 'd', ' '}}; +static const Tag kGtrcTag = {{'g', 'T', 'R', 'C'}}; +static const Tag kGxyzTag = {{'g', 'X', 'Y', 'Z'}}; +static const Tag kKtrcTag = {{'k', 'T', 'R', 'C'}}; +static const Tag kKxyzTag = {{'k', 'X', 'Y', 'Z'}}; +static const Tag kLumiTag = {{'l', 'u', 'm', 'i'}}; +static const Tag kMab_Tag = {{'m', 'A', 'B', ' '}}; +static const Tag kMba_Tag = {{'m', 'B', 'A', ' '}}; +static const Tag kMlucTag = {{'m', 'l', 'u', 'c'}}; +static const Tag kMntrTag = {{'m', 'n', 't', 'r'}}; +static const Tag kParaTag = {{'p', 'a', 'r', 'a'}}; +static const Tag kRgb_Tag = {{'R', 'G', 'B', ' '}}; +static const Tag kRtrcTag = {{'r', 'T', 'R', 'C'}}; +static const Tag kRxyzTag = {{'r', 'X', 'Y', 'Z'}}; +static const Tag kSf32Tag = {{'s', 'f', '3', '2'}}; +static const Tag kTextTag = {{'t', 'e', 'x', 't'}}; +static const Tag kVcgtTag = {{'v', 'c', 'g', 't'}}; +static const Tag kWtptTag = {{'w', 't', 'p', 't'}}; +static const Tag kXyz_Tag = {{'X', 'Y', 'Z', ' '}}; + +// Tag names focused on RGB and GRAY monitor profiles +static constexpr size_t kNumTagStrings = 17; +static constexpr const Tag* kTagStrings[kNumTagStrings] = { + &kCprtTag, &kWtptTag, &kBkptTag, &kRxyzTag, &kGxyzTag, &kBxyzTag, + &kKxyzTag, &kRtrcTag, &kGtrcTag, &kBtrcTag, &kKtrcTag, &kChadTag, + &kDescTag, &kChrmTag, &kDmndTag, &kDmddTag, &kLumiTag}; + +static constexpr size_t kCommandTagUnknown = 1; +static constexpr size_t kCommandTagTRC = 2; +static constexpr size_t kCommandTagXYZ = 3; +static constexpr size_t kCommandTagStringFirst = 4; + +// Tag types focused on RGB and GRAY monitor profiles +static constexpr size_t kNumTypeStrings = 8; +static constexpr const Tag* kTypeStrings[kNumTypeStrings] = { + &kXyz_Tag, &kDescTag, &kTextTag, &kMlucTag, + &kParaTag, &kCurvTag, &kSf32Tag, &kGbd_Tag}; + +static constexpr size_t kCommandInsert = 1; +static constexpr size_t kCommandShuffle2 = 2; +static constexpr size_t kCommandShuffle4 = 3; +static constexpr size_t kCommandPredict = 4; +static constexpr size_t kCommandXYZ = 10; +static constexpr size_t kCommandTypeStartFirst = 16; + +static constexpr size_t kFlagBitOffset = 64; +static constexpr size_t kFlagBitSize = 128; + +static constexpr size_t kNumICCContexts = 41; + +uint32_t DecodeUint32(const uint8_t* data, size_t size, size_t pos); +void EncodeUint32(size_t pos, uint32_t value, PaddedBytes* data); +void AppendUint32(uint32_t value, PaddedBytes* data); +Tag DecodeKeyword(const uint8_t* data, size_t size, size_t pos); +void EncodeKeyword(const Tag& keyword, uint8_t* data, size_t size, size_t pos); +void AppendKeyword(const Tag& keyword, PaddedBytes* data); + +// Checks if a + b > size, taking possible integer overflow into account. +Status CheckOutOfBounds(size_t a, size_t b, size_t size); +Status CheckIs32Bit(uint64_t v); + +PaddedBytes ICCInitialHeaderPrediction(); +void ICCPredictHeader(const uint8_t* icc, size_t size, uint8_t* header, + size_t pos); +uint8_t LinearPredictICCValue(const uint8_t* data, size_t start, size_t i, + size_t stride, size_t width, int order); +size_t ICCANSContext(size_t i, size_t b1, size_t b2); + +} // namespace jxl + +#endif // LIB_JXL_ICC_CODEC_COMMON_H_ |