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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-19 00:47:55 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-19 00:47:55 +0000 |
commit | 26a029d407be480d791972afb5975cf62c9360a6 (patch) | |
tree | f435a8308119effd964b339f76abb83a57c29483 /third_party/jpeg-xl/lib/jxl/toc.h | |
parent | Initial commit. (diff) | |
download | firefox-26a029d407be480d791972afb5975cf62c9360a6.tar.xz firefox-26a029d407be480d791972afb5975cf62c9360a6.zip |
Adding upstream version 124.0.1.upstream/124.0.1
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'third_party/jpeg-xl/lib/jxl/toc.h')
-rw-r--r-- | third_party/jpeg-xl/lib/jxl/toc.h | 53 |
1 files changed, 53 insertions, 0 deletions
diff --git a/third_party/jpeg-xl/lib/jxl/toc.h b/third_party/jpeg-xl/lib/jxl/toc.h new file mode 100644 index 0000000000..00006440b7 --- /dev/null +++ b/third_party/jpeg-xl/lib/jxl/toc.h @@ -0,0 +1,53 @@ +// 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_TOC_H_ +#define LIB_JXL_TOC_H_ + +#include <stddef.h> +#include <stdint.h> + +#include <vector> + +#include "lib/jxl/base/compiler_specific.h" +#include "lib/jxl/base/status.h" +#include "lib/jxl/coeff_order_fwd.h" +#include "lib/jxl/dec_bit_reader.h" +#include "lib/jxl/field_encodings.h" + +namespace jxl { + +// (2+bits) = 2,3,4 bytes so encoders can patch TOC after encoding. +// 30 is sufficient for 4K channels of uncompressed 16-bit samples. +constexpr U32Enc kTocDist(Bits(10), BitsOffset(14, 1024), BitsOffset(22, 17408), + BitsOffset(30, 4211712)); + +size_t MaxBits(const size_t num_sizes); + +// TODO(veluca): move these to FrameDimensions. +static JXL_INLINE size_t AcGroupIndex(size_t pass, size_t group, + size_t num_groups, size_t num_dc_groups) { + return 2 + num_dc_groups + pass * num_groups + group; +} + +static JXL_INLINE size_t NumTocEntries(size_t num_groups, size_t num_dc_groups, + size_t num_passes) { + if (num_groups == 1 && num_passes == 1) return 1; + return AcGroupIndex(0, 0, num_groups, num_dc_groups) + + num_groups * num_passes; +} + +Status ReadToc(size_t toc_entries, BitReader* JXL_RESTRICT reader, + std::vector<uint32_t>* JXL_RESTRICT sizes, + std::vector<coeff_order_t>* JXL_RESTRICT permutation); + +Status ReadGroupOffsets(size_t toc_entries, BitReader* JXL_RESTRICT reader, + std::vector<uint64_t>* JXL_RESTRICT offsets, + std::vector<uint32_t>* JXL_RESTRICT sizes, + uint64_t* total_size); + +} // namespace jxl + +#endif // LIB_JXL_TOC_H_ |