enc_entropy_coder.h (1553B)
1 // Copyright (c) the JPEG XL Project Authors. All rights reserved. 2 // 3 // Use of this source code is governed by a BSD-style 4 // license that can be found in the LICENSE file. 5 6 #ifndef LIB_JXL_ENC_ENTROPY_CODER_H_ 7 #define LIB_JXL_ENC_ENTROPY_CODER_H_ 8 9 #include <stddef.h> 10 #include <stdint.h> 11 #include <stdlib.h> 12 #include <string.h> 13 #include <sys/types.h> 14 15 #include <memory> 16 #include <utility> 17 #include <vector> 18 19 #include "lib/jxl/ac_context.h" // BlockCtxMap 20 #include "lib/jxl/ac_strategy.h" 21 #include "lib/jxl/enc_ans.h" 22 #include "lib/jxl/field_encodings.h" 23 #include "lib/jxl/frame_header.h" // YCbCrChromaSubsampling 24 #include "lib/jxl/image.h" 25 26 // Entropy coding and context modeling of DC and AC coefficients, as well as AC 27 // strategy and quantization field. 28 29 namespace jxl { 30 31 // Generate DCT NxN quantized AC values tokens. 32 // Only the subset "rect" [in units of blocks] within all images. 33 // See also DecodeACVarBlock. 34 void TokenizeCoefficients(const coeff_order_t* JXL_RESTRICT orders, 35 const Rect& rect, 36 const int32_t* JXL_RESTRICT* JXL_RESTRICT ac_rows, 37 const AcStrategyImage& ac_strategy, 38 const YCbCrChromaSubsampling& cs, 39 Image3I* JXL_RESTRICT tmp_num_nzeroes, 40 std::vector<Token>* JXL_RESTRICT output, 41 const ImageB& qdc, const ImageI& qf, 42 const BlockCtxMap& block_ctx_map); 43 44 } // namespace jxl 45 46 #endif // LIB_JXL_ENC_ENTROPY_CODER_H_