libjxl

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enc_cache.h (2272B)

      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_CACHE_H_
      7 #define LIB_JXL_ENC_CACHE_H_
      8 
      9 #include <jxl/cms_interface.h>
     10 #include <stddef.h>
     11 #include <stdint.h>
     12 
     13 #include <memory>
     14 #include <vector>
     15 
     16 #include "lib/jxl/base/data_parallel.h"
     17 #include "lib/jxl/base/status.h"
     18 #include "lib/jxl/dct_util.h"
     19 #include "lib/jxl/enc_ans.h"
     20 #include "lib/jxl/enc_bit_writer.h"
     21 #include "lib/jxl/enc_params.h"
     22 #include "lib/jxl/enc_progressive_split.h"
     23 #include "lib/jxl/frame_header.h"
     24 #include "lib/jxl/image.h"
     25 #include "lib/jxl/passes_state.h"
     26 #include "lib/jxl/quant_weights.h"
     27 
     28 namespace jxl {
     29 
     30 struct AuxOut;
     31 
     32 // Contains encoder state.
     33 struct PassesEncoderState {
     34   PassesSharedState shared;
     35 
     36   bool streaming_mode = false;
     37   bool initialize_global_state = true;
     38   size_t dc_group_index = 0;
     39 
     40   // Per-pass DCT coefficients for the image. One row per group.
     41   std::vector<std::unique_ptr<ACImage>> coeffs;
     42 
     43   // Raw data for special (reference+DC) frames.
     44   std::vector<std::unique_ptr<BitWriter>> special_frames;
     45 
     46   // For splitting into passes.
     47   ProgressiveSplitter progressive_splitter;
     48 
     49   CompressParams cparams;
     50 
     51   struct PassData {
     52     std::vector<std::vector<Token>> ac_tokens;
     53     std::vector<uint8_t> context_map;
     54     EntropyEncodingData codes;
     55   };
     56 
     57   std::vector<PassData> passes;
     58   std::vector<size_t> histogram_idx;
     59 
     60   // Block sizes seen so far.
     61   uint32_t used_acs = 0;
     62   // Coefficient orders that are non-default.
     63   std::vector<uint32_t> used_orders;
     64 
     65   // Multiplier to be applied to the quant matrices of the x channel.
     66   float x_qm_multiplier = 1.0f;
     67   float b_qm_multiplier = 1.0f;
     68 };
     69 
     70 // Initialize per-frame information.
     71 class ModularFrameEncoder;
     72 Status InitializePassesEncoder(const FrameHeader& frame_header,
     73                                const Image3F& opsin, const Rect& rect,
     74                                const JxlCmsInterface& cms, ThreadPool* pool,
     75                                PassesEncoderState* passes_enc_state,
     76                                ModularFrameEncoder* modular_frame_encoder,
     77                                AuxOut* aux_out);
     78 
     79 }  // namespace jxl
     80 
     81 #endif  // LIB_JXL_ENC_CACHE_H_