Common.cpp

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/*
    RawSpeed - RAW file decoder.
 
    Copyright (C) 2017 Roman Lebedev
 
    This library is free software; you can redistribute it and/or
    modify it under the terms of the GNU Lesser General Public
    License as published by the Free Software Foundation; either
    version 2 of the License, or (at your option) any later version.
 
    This library is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
    Lesser General Public License for more details.
 
    You should have received a copy of the GNU Lesser General Public
    License along with this library; if not, write to the Free Software
    Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
 
#include "fuzz/Common.h"
#include "adt/Casts.h"
#include "adt/Point.h"
#include "common/RawImage.h"
#include "io/Buffer.h"
#include "io/ByteStream.h"
#include "io/IOException.h"
#include "metadata/ColorFilterArray.h"
#include <cstdint>
 
rawspeed::RawImage CreateRawImage(rawspeed::ByteStream& bs) {
  const uint32_t width = bs.getU32();
  const uint32_t height = bs.getU32();
  const uint32_t type = bs.getU32();
  const uint32_t cpp = bs.getU32();
  const uint32_t isCFA = bs.getU32();
 
  if (type != static_cast<uint32_t>(rawspeed::RawImageType::UINT16) &&
      type != static_cast<uint32_t>(rawspeed::RawImageType::F32))
    ThrowRSE("Unknown image type: %u", type);
 
  rawspeed::RawImage mRaw(
      rawspeed::RawImage::create(static_cast<rawspeed::RawImageType>(type)));
 
  mRaw->dim =
      rawspeed::iPoint2D(static_cast<rawspeed::iPoint2D::value_type>(width),
                         static_cast<rawspeed::iPoint2D::value_type>(height));
  mRaw->setCpp(cpp);
  mRaw->isCFA = isCFA;
 
  return mRaw;
}
 
rawspeed::ColorFilterArray CreateCFA(rawspeed::ByteStream& bs) {
  const int32_t cfaWidth = bs.getI32();
  const int32_t cfaHeight = bs.getI32();
 
  rawspeed::iPoint2D cfaSize(cfaWidth, cfaHeight);
  if (!cfaSize.hasPositiveArea())
    ThrowIOE("Bad CFA size.");
 
  rawspeed::ColorFilterArray cfa;
  cfa.setSize(cfaSize);
  (void)bs.check(
      rawspeed::implicit_cast<rawspeed::Buffer::size_type>(cfaSize.area()), 4);
 
  for (auto x = 0; x < cfaWidth; x++) {
    for (auto y = 0; y < cfaHeight; y++) {
      const uint32_t color = bs.getU32();
      if (color >= static_cast<uint32_t>(rawspeed::CFAColor::END))
        ThrowRSE("Unknown color: %u", color);
 
      cfa.setColorAt(rawspeed::iPoint2D(x, y),
                     static_cast<rawspeed::CFAColor>(color));
    }
  }
 
  return cfa;
}