// Copyright 2016 The 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.
#include <stdint.h>

#include "lcms2.h"

int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size) {
  cmsHPROFILE srcProfile = cmsOpenProfileFromMem(data, size);
  if (!srcProfile) return 0;

  cmsHPROFILE dstProfile = cmsCreate_sRGBProfile();
  if (!dstProfile) {
    cmsCloseProfile(srcProfile);
    return 0;
  }

  cmsColorSpaceSignature srcCS = cmsGetColorSpace(srcProfile);
  cmsUInt32Number nSrcComponents = cmsChannelsOf(srcCS);
  cmsUInt32Number srcFormat;
  if (srcCS == cmsSigLabData) {
    srcFormat =
        COLORSPACE_SH(PT_Lab) | CHANNELS_SH(nSrcComponents) | BYTES_SH(0);
  } else {
    srcFormat =
        COLORSPACE_SH(PT_ANY) | CHANNELS_SH(nSrcComponents) | BYTES_SH(1);
  }

  cmsUInt32Number intent = 0;
  cmsUInt32Number flags = 0;
  cmsHTRANSFORM hTransform = cmsCreateTransform(
      srcProfile, srcFormat, dstProfile, TYPE_BGR_8, intent, flags);
  cmsCloseProfile(srcProfile);
  cmsCloseProfile(dstProfile);
  if (!hTransform) return 0;

  uint8_t output[4];
  if (T_BYTES(srcFormat) == 0) {  // 0 means double
    double input[nSrcComponents];
    for (uint32_t i = 0; i < nSrcComponents; i++) input[i] = 0.5f;
    cmsDoTransform(hTransform, input, output, 1);
  } else {
    uint8_t input[nSrcComponents];
    for (uint32_t i = 0; i < nSrcComponents; i++) input[i] = 128;
    cmsDoTransform(hTransform, input, output, 1);
  }
  cmsDeleteTransform(hTransform);

  return 0;
}