icc_transform.h

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// 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_ICC_ICC_TRANSFORM_H_
#define CORE_FXCODEC_ICC_ICC_TRANSFORM_H_
 
#include <stdint.h>
 
#include <memory>
 
#include "core/fxcodec/fx_codec_def.h"
#include "third_party/base/containers/span.h"
 
#if defined(USE_SYSTEM_LCMS2)
#include <lcms2.h>
#else
#include "third_party/lcms/include/lcms2.h"
#endif
 
namespace fxcodec {
 
class IccTransform {
 public:
  static std::unique_ptr<IccTransform> CreateTransformSRGB(
      pdfium::span<const uint8_t> span);
 
  ~IccTransform();
 
  void Translate(pdfium::span<const float> pSrcValues,
                 pdfium::span<float> pDestValues);
  void TranslateScanline(pdfium::span<uint8_t> pDest,
                         pdfium::span<const uint8_t> pSrc,
                         int pixels);
 
  int components() const { return m_nSrcComponents; }
  bool IsNormal() const { return m_bNormal; }
 
  static bool IsValidIccComponents(int components);
 
 private:
  IccTransform(cmsHTRANSFORM transform,
               int srcComponents,
               bool bIsLab,
               bool bNormal);
 
  const cmsHTRANSFORM m_hTransform;
  const int m_nSrcComponents;
  const bool m_bLab;
  const bool m_bNormal;
};
 
}  // namespace fxcodec
 
#endif  // CORE_FXCODEC_ICC_ICC_TRANSFORM_H_