flatemodule.h

Go to the documentation of this file.

// Copyright 2016 The PDFium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
 
// Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
 
#ifndef CORE_FXCODEC_FLATE_FLATEMODULE_H_
#define CORE_FXCODEC_FLATE_FLATEMODULE_H_
 
#include <stdint.h>
 
#include <memory>
 
#include "core/fxcrt/data_vector.h"
#include "core/fxcrt/fx_memory_wrappers.h"
#include "third_party/base/containers/span.h"
 
namespace fxcodec {
 
class ScanlineDecoder;
 
class FlateModule {
 public:
  static std::unique_ptr<ScanlineDecoder> CreateDecoder(
      pdfium::span<const uint8_t> src_span,
      int width,
      int height,
      int nComps,
      int bpc,
      int predictor,
      int Colors,
      int BitsPerComponent,
      int Columns);
 
  static uint32_t FlateOrLZWDecode(
      bool bLZW,
      pdfium::span<const uint8_t> src_span,
      bool bEarlyChange,
      int predictor,
      int Colors,
      int BitsPerComponent,
      int Columns,
      uint32_t estimated_size,
      std::unique_ptr<uint8_t, FxFreeDeleter>* dest_buf,
      uint32_t* dest_size);
 
  static DataVector<uint8_t> Encode(pdfium::span<const uint8_t> src_span);
 
  FlateModule() = delete;
  FlateModule(const FlateModule&) = delete;
  FlateModule& operator=(const FlateModule&) = delete;
};
 
}  // namespace fxcodec
 
using FlateModule = fxcodec::FlateModule;
 
#endif  // CORE_FXCODEC_FLATE_FLATEMODULE_H_