core/fxcodec/codec/ccodec_bmpmodule.h

// Copyright 2016 PDFium Authors. All rights reserved.
// 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_CODEC_CCODEC_BMPMODULE_H_
#define CORE_FXCODEC_CODEC_CCODEC_BMPMODULE_H_

#include "core/fxcrt/cfx_unowned_ptr.h"
#include "core/fxcrt/fx_system.h"

class CFX_DIBAttribute;
struct FXBMP_Context;

class CCodec_BmpModule {
 public:
  class Delegate {
   public:
    virtual bool BmpInputImagePositionBuf(uint32_t rcd_pos) = 0;
    virtual void BmpReadScanline(int32_t row_num, uint8_t* row_buf) = 0;
  };

  CCodec_BmpModule();
  ~CCodec_BmpModule();

  FXBMP_Context* Start();
  void Finish(FXBMP_Context* pContext);
  uint32_t GetAvailInput(FXBMP_Context* pContext, uint8_t** avail_buf_ptr);
  void Input(FXBMP_Context* pContext,
             const uint8_t* src_buf,
             uint32_t src_size);
  int32_t ReadHeader(FXBMP_Context* pContext,
                     int32_t* width,
                     int32_t* height,
                     bool* tb_flag,
                     int32_t* components,
                     int32_t* pal_num,
                     uint32_t** pal_pp,
                     CFX_DIBAttribute* pAttribute);
  int32_t LoadImage(FXBMP_Context* pContext);
  Delegate* GetDelegate() const { return m_pDelegate.Get(); }
  void SetDelegate(Delegate* pDelegate) { m_pDelegate = pDelegate; }

 protected:
  CFX_UnownedPtr<Delegate> m_pDelegate;
  char m_szLastError[256];
};

#endif  // CORE_FXCODEC_CODEC_CCODEC_BMPMODULE_H_