diff options
Diffstat (limited to 'core/fpdfapi/page/fpdf_page_colors.cpp')
| -rw-r--r-- | core/fpdfapi/page/fpdf_page_colors.cpp | 234 |
1 files changed, 234 insertions, 0 deletions
diff --git a/core/fpdfapi/page/fpdf_page_colors.cpp b/core/fpdfapi/page/fpdf_page_colors.cpp new file mode 100644 index 0000000000..d6500b716b --- /dev/null +++ b/core/fpdfapi/page/fpdf_page_colors.cpp @@ -0,0 +1,234 @@ +// Copyright 2014 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. + +// Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com + +#include "core/fpdfapi/page/pageint.h" + +#include <limits.h> + +#include <algorithm> + +#include "core/fpdfapi/cpdf_modulemgr.h" +#include "core/fpdfapi/fpdf_parser/cpdf_array.h" +#include "core/fpdfapi/fpdf_parser/cpdf_dictionary.h" +#include "core/fpdfapi/fpdf_parser/cpdf_document.h" +#include "core/fpdfapi/fpdf_parser/cpdf_stream.h" +#include "core/fpdfapi/fpdf_parser/cpdf_stream_acc.h" +#include "core/fpdfapi/fpdf_parser/cpdf_string.h" +#include "core/fxcodec/fx_codec.h" + +namespace { + +uint32_t ComponentsForFamily(int family) { + if (family == PDFCS_DEVICERGB) + return 3; + if (family == PDFCS_DEVICEGRAY) + return 1; + return 4; +} + +} // namespace + +void sRGB_to_AdobeCMYK(FX_FLOAT R, + FX_FLOAT G, + FX_FLOAT B, + FX_FLOAT& c, + FX_FLOAT& m, + FX_FLOAT& y, + FX_FLOAT& k) { + c = 1.0f - R; + m = 1.0f - G; + y = 1.0f - B; + k = c; + if (m < k) { + k = m; + } + if (y < k) { + k = y; + } +} + +void ReverseRGB(uint8_t* pDestBuf, const uint8_t* pSrcBuf, int pixels) { + if (pDestBuf == pSrcBuf) { + for (int i = 0; i < pixels; i++) { + uint8_t temp = pDestBuf[2]; + pDestBuf[2] = pDestBuf[0]; + pDestBuf[0] = temp; + pDestBuf += 3; + } + } else { + for (int i = 0; i < pixels; i++) { + *pDestBuf++ = pSrcBuf[2]; + *pDestBuf++ = pSrcBuf[1]; + *pDestBuf++ = pSrcBuf[0]; + pSrcBuf += 3; + } + } +} + +CPDF_DeviceCS::CPDF_DeviceCS(CPDF_Document* pDoc, int family) + : CPDF_ColorSpace(pDoc, family, ComponentsForFamily(family)) {} + +FX_BOOL CPDF_DeviceCS::GetRGB(FX_FLOAT* pBuf, + FX_FLOAT& R, + FX_FLOAT& G, + FX_FLOAT& B) const { + if (m_Family == PDFCS_DEVICERGB) { + R = pBuf[0]; + if (R < 0) { + R = 0; + } else if (R > 1) { + R = 1; + } + G = pBuf[1]; + if (G < 0) { + G = 0; + } else if (G > 1) { + G = 1; + } + B = pBuf[2]; + if (B < 0) { + B = 0; + } else if (B > 1) { + B = 1; + } + } else if (m_Family == PDFCS_DEVICEGRAY) { + R = *pBuf; + if (R < 0) { + R = 0; + } else if (R > 1) { + R = 1; + } + G = B = R; + } else if (m_Family == PDFCS_DEVICECMYK) { + if (!m_dwStdConversion) { + AdobeCMYK_to_sRGB(pBuf[0], pBuf[1], pBuf[2], pBuf[3], R, G, B); + } else { + FX_FLOAT k = pBuf[3]; + R = 1.0f - std::min(1.0f, pBuf[0] + k); + G = 1.0f - std::min(1.0f, pBuf[1] + k); + B = 1.0f - std::min(1.0f, pBuf[2] + k); + } + } else { + ASSERT(m_Family == PDFCS_PATTERN); + R = G = B = 0; + return FALSE; + } + return TRUE; +} +FX_BOOL CPDF_DeviceCS::v_GetCMYK(FX_FLOAT* pBuf, + FX_FLOAT& c, + FX_FLOAT& m, + FX_FLOAT& y, + FX_FLOAT& k) const { + if (m_Family != PDFCS_DEVICECMYK) { + return FALSE; + } + c = pBuf[0]; + m = pBuf[1]; + y = pBuf[2]; + k = pBuf[3]; + return TRUE; +} +FX_BOOL CPDF_DeviceCS::SetRGB(FX_FLOAT* pBuf, + FX_FLOAT R, + FX_FLOAT G, + FX_FLOAT B) const { + if (m_Family == PDFCS_DEVICERGB) { + pBuf[0] = R; + pBuf[1] = G; + pBuf[2] = B; + return TRUE; + } + if (m_Family == PDFCS_DEVICEGRAY) { + if (R == G && R == B) { + *pBuf = R; + return TRUE; + } + return FALSE; + } + if (m_Family == PDFCS_DEVICECMYK) { + sRGB_to_AdobeCMYK(R, G, B, pBuf[0], pBuf[1], pBuf[2], pBuf[3]); + return TRUE; + } + return FALSE; +} +FX_BOOL CPDF_DeviceCS::v_SetCMYK(FX_FLOAT* pBuf, + FX_FLOAT c, + FX_FLOAT m, + FX_FLOAT y, + FX_FLOAT k) const { + if (m_Family == PDFCS_DEVICERGB) { + AdobeCMYK_to_sRGB(c, m, y, k, pBuf[0], pBuf[1], pBuf[2]); + return TRUE; + } + if (m_Family == PDFCS_DEVICECMYK) { + pBuf[0] = c; + pBuf[1] = m; + pBuf[2] = y; + pBuf[3] = k; + return TRUE; + } + return FALSE; +} + +void CPDF_DeviceCS::TranslateImageLine(uint8_t* pDestBuf, + const uint8_t* pSrcBuf, + int pixels, + int image_width, + int image_height, + FX_BOOL bTransMask) const { + if (bTransMask && m_Family == PDFCS_DEVICECMYK) { + for (int i = 0; i < pixels; i++) { + int k = 255 - pSrcBuf[3]; + pDestBuf[0] = ((255 - pSrcBuf[0]) * k) / 255; + pDestBuf[1] = ((255 - pSrcBuf[1]) * k) / 255; + pDestBuf[2] = ((255 - pSrcBuf[2]) * k) / 255; + pDestBuf += 3; + pSrcBuf += 4; + } + return; + } + if (m_Family == PDFCS_DEVICERGB) { + ReverseRGB(pDestBuf, pSrcBuf, pixels); + } else if (m_Family == PDFCS_DEVICEGRAY) { + for (int i = 0; i < pixels; i++) { + *pDestBuf++ = pSrcBuf[i]; + *pDestBuf++ = pSrcBuf[i]; + *pDestBuf++ = pSrcBuf[i]; + } + } else { + for (int i = 0; i < pixels; i++) { + if (!m_dwStdConversion) { + AdobeCMYK_to_sRGB1(pSrcBuf[0], pSrcBuf[1], pSrcBuf[2], pSrcBuf[3], + pDestBuf[2], pDestBuf[1], pDestBuf[0]); + } else { + uint8_t k = pSrcBuf[3]; + pDestBuf[2] = 255 - std::min(255, pSrcBuf[0] + k); + pDestBuf[1] = 255 - std::min(255, pSrcBuf[1] + k); + pDestBuf[0] = 255 - std::min(255, pSrcBuf[2] + k); + } + pSrcBuf += 4; + pDestBuf += 3; + } + } +} + +CPDF_IccProfile::CPDF_IccProfile(const uint8_t* pData, uint32_t dwSize) + : m_bsRGB(FALSE), m_pTransform(nullptr), m_nSrcComponents(0) { + if (dwSize == 3144 && + FXSYS_memcmp(pData + 0x190, "sRGB IEC61966-2.1", 17) == 0) { + m_bsRGB = TRUE; + m_nSrcComponents = 3; + } else if (CPDF_ModuleMgr::Get()->GetIccModule()) { + m_pTransform = CPDF_ModuleMgr::Get()->GetIccModule()->CreateTransform_sRGB( + pData, dwSize, m_nSrcComponents); + } +} +CPDF_IccProfile::~CPDF_IccProfile() { + if (m_pTransform) { + CPDF_ModuleMgr::Get()->GetIccModule()->DestroyTransform(m_pTransform); + } +} |