| // 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); |
| } |