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1 // Copyright 2014 PDFium Authors. All rights reserved. | 1 // Copyright 2014 PDFium Authors. All rights reserved. |
2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 // Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com | 5 // Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com |
6 | 6 |
7 #include "../../../../third_party/base/nonstd_unique_ptr.h" | 7 #include "../../../../third_party/base/nonstd_unique_ptr.h" |
8 #include "../../../include/fpdfapi/fpdf_module.h" | 8 #include "../../../include/fpdfapi/fpdf_module.h" |
9 #include "../../../include/fpdfapi/fpdf_pageobj.h" | 9 #include "../../../include/fpdfapi/fpdf_pageobj.h" |
10 #include "../../../include/fpdfapi/fpdf_render.h" | 10 #include "../../../include/fpdfapi/fpdf_render.h" |
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699 nonstd::unique_ptr<JpxBitMapContext> context( | 699 nonstd::unique_ptr<JpxBitMapContext> context( |
700 new JpxBitMapContext(pJpxModule)); | 700 new JpxBitMapContext(pJpxModule)); |
701 context->set_context(pJpxModule->CreateDecoder(m_pStreamAcc->GetData(), | 701 context->set_context(pJpxModule->CreateDecoder(m_pStreamAcc->GetData(), |
702 m_pStreamAcc->GetSize(), | 702 m_pStreamAcc->GetSize(), |
703 m_pColorSpace != nullptr)); | 703 m_pColorSpace != nullptr)); |
704 if (!context->context()) | 704 if (!context->context()) |
705 return; | 705 return; |
706 | 706 |
707 FX_DWORD width = 0; | 707 FX_DWORD width = 0; |
708 FX_DWORD height = 0; | 708 FX_DWORD height = 0; |
709 FX_DWORD codestream_nComps = 0; | 709 FX_DWORD components = 0; |
710 FX_DWORD image_nComps = 0; | 710 pJpxModule->GetImageInfo(context->context(), &width, &height, &components); |
711 pJpxModule->GetImageInfo(context->context(), width, height, codestream_nComps, | |
712 image_nComps); | |
713 if ((int)width < m_Width || (int)height < m_Height) | 711 if ((int)width < m_Width || (int)height < m_Height) |
714 return; | 712 return; |
715 | 713 |
716 int output_nComps; | |
717 FX_BOOL bTranslateColor; | |
718 FX_BOOL bSwapRGB = FALSE; | 714 FX_BOOL bSwapRGB = FALSE; |
719 if (m_pColorSpace) { | 715 if (m_pColorSpace) { |
720 if (codestream_nComps != (FX_DWORD)m_pColorSpace->CountComponents()) | 716 if (components != (FX_DWORD)m_pColorSpace->CountComponents()) |
721 return; | 717 return; |
722 output_nComps = codestream_nComps; | |
723 bTranslateColor = FALSE; | |
724 if (m_pColorSpace == CPDF_ColorSpace::GetStockCS(PDFCS_DEVICERGB)) { | 718 if (m_pColorSpace == CPDF_ColorSpace::GetStockCS(PDFCS_DEVICERGB)) { |
725 bSwapRGB = TRUE; | 719 bSwapRGB = TRUE; |
726 m_pColorSpace = nullptr; | 720 m_pColorSpace = nullptr; |
727 } | 721 } |
728 } else { | 722 } else { |
729 bTranslateColor = TRUE; | 723 if (components == 3) { |
730 if (image_nComps) { | 724 bSwapRGB = TRUE; |
731 output_nComps = image_nComps; | 725 } else if (components == 4) { |
732 } else { | 726 m_pColorSpace = CPDF_ColorSpace::GetStockCS(PDFCS_DEVICECMYK); |
733 output_nComps = codestream_nComps; | |
734 } | 727 } |
735 if (output_nComps == 3) { | 728 m_nComponents = components; |
736 bSwapRGB = TRUE; | |
737 } else if (output_nComps == 4) { | |
738 m_pColorSpace = CPDF_ColorSpace::GetStockCS(PDFCS_DEVICECMYK); | |
739 bTranslateColor = FALSE; | |
740 } | |
741 m_nComponents = output_nComps; | |
742 } | 729 } |
743 FXDIB_Format format; | 730 FXDIB_Format format; |
744 if (output_nComps == 1) { | 731 if (components == 1) { |
745 format = FXDIB_8bppRgb; | 732 format = FXDIB_8bppRgb; |
746 } else if (output_nComps <= 3) { | 733 } else if (components <= 3) { |
747 format = FXDIB_Rgb; | 734 format = FXDIB_Rgb; |
748 } else if (output_nComps == 4) { | 735 } else if (components == 4) { |
749 format = FXDIB_Rgb32; | 736 format = FXDIB_Rgb32; |
750 } else { | 737 } else { |
751 width = (width * output_nComps + 2) / 3; | 738 width = (width * components + 2) / 3; |
752 format = FXDIB_Rgb; | 739 format = FXDIB_Rgb; |
753 } | 740 } |
754 m_pCachedBitmap.reset(new CFX_DIBitmap); | 741 m_pCachedBitmap.reset(new CFX_DIBitmap); |
755 if (!m_pCachedBitmap->Create(width, height, format)) { | 742 if (!m_pCachedBitmap->Create(width, height, format)) { |
756 m_pCachedBitmap.reset(); | 743 m_pCachedBitmap.reset(); |
757 return; | 744 return; |
758 } | 745 } |
759 m_pCachedBitmap->Clear(0xFFFFFFFF); | 746 m_pCachedBitmap->Clear(0xFFFFFFFF); |
760 context->set_output_offsets(FX_Alloc(uint8_t, output_nComps)); | 747 context->set_output_offsets(FX_Alloc(uint8_t, components)); |
761 for (int i = 0; i < output_nComps; ++i) | 748 for (int i = 0; i < components; ++i) |
762 context->output_offsets()[i] = i; | 749 context->output_offsets()[i] = i; |
763 if (bSwapRGB) { | 750 if (bSwapRGB) { |
764 context->output_offsets()[0] = 2; | 751 context->output_offsets()[0] = 2; |
765 context->output_offsets()[2] = 0; | 752 context->output_offsets()[2] = 0; |
766 } | 753 } |
767 if (!pJpxModule->Decode(context->context(), m_pCachedBitmap->GetBuffer(), | 754 if (!pJpxModule->Decode(context->context(), m_pCachedBitmap->GetBuffer(), |
768 m_pCachedBitmap->GetPitch(), bTranslateColor, | 755 m_pCachedBitmap->GetPitch(), |
769 context->output_offsets())) { | 756 context->output_offsets())) { |
770 m_pCachedBitmap.reset(); | 757 m_pCachedBitmap.reset(); |
771 return; | 758 return; |
772 } | 759 } |
773 if (m_pColorSpace && m_pColorSpace->GetFamily() == PDFCS_INDEXED && | 760 if (m_pColorSpace && m_pColorSpace->GetFamily() == PDFCS_INDEXED && |
774 m_bpc < 8) { | 761 m_bpc < 8) { |
775 int scale = 8 - m_bpc; | 762 int scale = 8 - m_bpc; |
776 for (FX_DWORD row = 0; row < height; ++row) { | 763 for (FX_DWORD row = 0; row < height; ++row) { |
777 uint8_t* scanline = (uint8_t*)m_pCachedBitmap->GetScanline(row); | 764 uint8_t* scanline = (uint8_t*)m_pCachedBitmap->GetScanline(row); |
778 for (FX_DWORD col = 0; col < width; ++col) { | 765 for (FX_DWORD col = 0; col < width; ++col) { |
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1673 } | 1660 } |
1674 FX_BOOL CPDF_ImageLoader::Continue(void* LoadHandle, IFX_Pause* pPause) { | 1661 FX_BOOL CPDF_ImageLoader::Continue(void* LoadHandle, IFX_Pause* pPause) { |
1675 return ((CPDF_ProgressiveImageLoaderHandle*)LoadHandle)->Continue(pPause); | 1662 return ((CPDF_ProgressiveImageLoaderHandle*)LoadHandle)->Continue(pPause); |
1676 } | 1663 } |
1677 CPDF_ImageLoader::~CPDF_ImageLoader() { | 1664 CPDF_ImageLoader::~CPDF_ImageLoader() { |
1678 if (!m_bCached) { | 1665 if (!m_bCached) { |
1679 delete m_pBitmap; | 1666 delete m_pBitmap; |
1680 delete m_pMask; | 1667 delete m_pMask; |
1681 } | 1668 } |
1682 } | 1669 } |
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