blob: 67cb42a83a55deddef54965372f3b757a22c28ce [file] [log] [blame]
// Copyright 2017 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
#include "core/fpdfapi/page/cpdf_iccprofile.h"
#include <utility>
#include "core/fpdfapi/parser/cpdf_stream.h"
#include "core/fxcodec/icc/icc_transform.h"
namespace {
bool DetectSRGB(pdfium::span<const uint8_t> span) {
static const char kSRGB[] = "sRGB IEC61966-2.1";
return span.size() == 3144 && memcmp(&span[400], kSRGB, strlen(kSRGB)) == 0;
}
} // namespace
CPDF_IccProfile::CPDF_IccProfile(RetainPtr<const CPDF_Stream> pStream,
pdfium::span<const uint8_t> span,
uint32_t expected_components)
: m_bsRGB(DetectSRGB(span)), m_pStream(std::move(pStream)) {
if (m_bsRGB) {
m_nSrcComponents = 3;
return;
}
auto transform = fxcodec::IccTransform::CreateTransformSRGB(span);
if (!transform) {
return;
}
uint32_t components = transform->components();
if (components != expected_components) {
return;
}
m_nSrcComponents = components;
m_Transform = std::move(transform);
}
CPDF_IccProfile::~CPDF_IccProfile() = default;
bool CPDF_IccProfile::IsNormal() const {
return m_Transform->IsNormal();
}
void CPDF_IccProfile::Translate(pdfium::span<const float> pSrcValues,
pdfium::span<float> pDestValues) {
m_Transform->Translate(pSrcValues, pDestValues);
}
void CPDF_IccProfile::TranslateScanline(pdfium::span<uint8_t> pDest,
pdfium::span<const uint8_t> pSrc,
int pixels) {
m_Transform->TranslateScanline(pDest, pSrc, pixels);
}