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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 17:32:43 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 17:32:43 +0000 |
commit | 6bf0a5cb5034a7e684dcc3500e841785237ce2dd (patch) | |
tree | a68f146d7fa01f0134297619fbe7e33db084e0aa /third_party/jpeg-xl/lib/jxl/enc_coeff_order.h | |
parent | Initial commit. (diff) | |
download | thunderbird-6bf0a5cb5034a7e684dcc3500e841785237ce2dd.tar.xz thunderbird-6bf0a5cb5034a7e684dcc3500e841785237ce2dd.zip |
Adding upstream version 1:115.7.0.upstream/1%115.7.0upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to '')
-rw-r--r-- | third_party/jpeg-xl/lib/jxl/enc_coeff_order.h | 54 |
1 files changed, 54 insertions, 0 deletions
diff --git a/third_party/jpeg-xl/lib/jxl/enc_coeff_order.h b/third_party/jpeg-xl/lib/jxl/enc_coeff_order.h new file mode 100644 index 0000000000..3a43f4f986 --- /dev/null +++ b/third_party/jpeg-xl/lib/jxl/enc_coeff_order.h @@ -0,0 +1,54 @@ +// 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_COEFF_ORDER_H_ +#define LIB_JXL_ENC_COEFF_ORDER_H_ + +#include <stddef.h> +#include <stdint.h> + +#include "lib/jxl/ac_strategy.h" +#include "lib/jxl/base/compiler_specific.h" +#include "lib/jxl/base/status.h" +#include "lib/jxl/coeff_order.h" +#include "lib/jxl/coeff_order_fwd.h" +#include "lib/jxl/common.h" +#include "lib/jxl/dct_util.h" +#include "lib/jxl/dec_bit_reader.h" +#include "lib/jxl/enc_bit_writer.h" +#include "lib/jxl/enc_params.h" + +namespace jxl { + +struct AuxOut; + +// Orders that are actually used in part of image. `rect` is in block units. +// Returns {orders that are used, orders that might be made non-default}. +std::pair<uint32_t, uint32_t> ComputeUsedOrders( + SpeedTier speed, const AcStrategyImage& ac_strategy, const Rect& rect); + +// Modify zig-zag order, so that DCT bands with more zeros go later. +// Order of DCT bands with same number of zeros is untouched, so +// permutation will be cheaper to encode. +void ComputeCoeffOrder(SpeedTier speed, const ACImage& acs, + const AcStrategyImage& ac_strategy, + const FrameDimensions& frame_dim, uint32_t& used_orders, + uint16_t used_acs, coeff_order_t* JXL_RESTRICT order); + +void EncodeCoeffOrders(uint16_t used_orders, + const coeff_order_t* JXL_RESTRICT order, + BitWriter* writer, size_t layer, + AuxOut* JXL_RESTRICT aux_out); + +// Encoding/decoding of a single permutation. `size`: number of elements in the +// permutation. `skip`: number of elements to skip from the *beginning* of the +// permutation. +void EncodePermutation(const coeff_order_t* JXL_RESTRICT order, size_t skip, + size_t size, BitWriter* writer, int layer, + AuxOut* aux_out); + +} // namespace jxl + +#endif // LIB_JXL_ENC_COEFF_ORDER_H_ |