diff options
Diffstat (limited to 'core/fpdfapi')
| -rw-r--r-- | core/fpdfapi/page/fpdf_page_colors.cpp | 12 | ||||
| -rw-r--r-- | core/fpdfapi/render/fpdf_render_loadimage.cpp | 96 |
2 files changed, 72 insertions, 36 deletions
diff --git a/core/fpdfapi/page/fpdf_page_colors.cpp b/core/fpdfapi/page/fpdf_page_colors.cpp index 455233abb5..69129e4f2b 100644 --- a/core/fpdfapi/page/fpdf_page_colors.cpp +++ b/core/fpdfapi/page/fpdf_page_colors.cpp @@ -21,6 +21,12 @@ namespace { +FX_FLOAT NormalizeChannel(FX_FLOAT fVal) { + return std::min(std::max(fVal, 0.0f), 1.0f); +} + +} // namespace + uint32_t ComponentsForFamily(int family) { if (family == PDFCS_DEVICERGB) return 3; @@ -30,12 +36,6 @@ uint32_t ComponentsForFamily(int family) { return 4; } -FX_FLOAT NormalizeChannel(FX_FLOAT fVal) { - return std::min(std::max(fVal, 0.0f), 1.0f); -} - -} // namespace - void sRGB_to_AdobeCMYK(FX_FLOAT R, FX_FLOAT G, FX_FLOAT B, diff --git a/core/fpdfapi/render/fpdf_render_loadimage.cpp b/core/fpdfapi/render/fpdf_render_loadimage.cpp index c3fe99018c..118f7849a9 100644 --- a/core/fpdfapi/render/fpdf_render_loadimage.cpp +++ b/core/fpdfapi/render/fpdf_render_loadimage.cpp @@ -58,6 +58,10 @@ bool IsAllowedBPCValue(int bpc) { return bpc == 1 || bpc == 2 || bpc == 4 || bpc == 8 || bpc == 16; } +bool IsAllowedICCComponents(int nComp) { + return nComp == 1 || nComp == 3 || nComp == 4; +} + template <typename T> T ClampValue(T value, T max_value) { value = std::min(value, max_value); @@ -536,18 +540,43 @@ CCodec_ScanlineDecoder* FPDFAPI_CreateFlateDecoder( int CPDF_DIBSource::CreateDecoder() { const CFX_ByteString& decoder = m_pStreamAcc->GetImageDecoder(); - if (decoder.IsEmpty()) { + if (decoder.IsEmpty()) return 1; - } - if (m_bDoBpcCheck && m_bpc == 0) { + + if (m_bDoBpcCheck && m_bpc == 0) return 0; + + if (decoder == "JPXDecode") { + LoadJpxBitmap(); + return m_pCachedBitmap ? 1 : 0; + } + if (decoder == "JBIG2Decode") { + m_pCachedBitmap = pdfium::MakeUnique<CFX_DIBitmap>(); + if (!m_pCachedBitmap->Create( + m_Width, m_Height, m_bImageMask ? FXDIB_1bppMask : FXDIB_1bppRgb)) { + m_pCachedBitmap.reset(); + return 0; + } + m_Status = 1; + return 2; } + const uint8_t* src_data = m_pStreamAcc->GetData(); uint32_t src_size = m_pStreamAcc->GetSize(); const CPDF_Dictionary* pParams = m_pStreamAcc->GetImageParam(); if (decoder == "CCITTFaxDecode") { m_pDecoder.reset(FPDFAPI_CreateFaxDecoder(src_data, src_size, m_Width, m_Height, pParams)); + } else if (decoder == "FlateDecode") { + m_pDecoder.reset(FPDFAPI_CreateFlateDecoder( + src_data, src_size, m_Width, m_Height, m_nComponents, m_bpc, pParams)); + } else if (decoder == "RunLengthDecode") { + m_pDecoder.reset(CPDF_ModuleMgr::Get() + ->GetCodecModule() + ->GetBasicModule() + ->CreateRunLengthDecoder(src_data, src_size, m_Width, + m_Height, m_nComponents, + m_bpc)); } else if (decoder == "DCTDecode") { m_pDecoder.reset(CPDF_ModuleMgr::Get()->GetJpegModule()->CreateDecoder( src_data, src_size, m_Width, m_Height, m_nComponents, @@ -563,12 +592,41 @@ int CPDF_DIBSource::CreateDecoder() { FX_Free(m_pCompData); m_pCompData = nullptr; m_nComponents = static_cast<uint32_t>(comps); - if (m_pColorSpace && - m_pColorSpace->CountComponents() != m_nComponents) { - return 0; + if (m_pColorSpace) { + switch (m_Family) { + case PDFCS_DEVICEGRAY: + case PDFCS_DEVICERGB: + case PDFCS_DEVICECMYK: { + uint32_t dwMinComps = ComponentsForFamily(m_Family); + if (m_pColorSpace->CountComponents() < dwMinComps || + m_nComponents < dwMinComps) { + return 0; + } + break; + } + case PDFCS_LAB: { + if (m_nComponents != 3 || m_pColorSpace->CountComponents() < 3) + return 0; + break; + } + case PDFCS_ICCBASED: { + if (!IsAllowedICCComponents(m_nComponents) || + !IsAllowedICCComponents(m_pColorSpace->CountComponents()) || + m_pColorSpace->CountComponents() < m_nComponents) { + return 0; + } + break; + } + default: { + if (m_pColorSpace->CountComponents() != m_nComponents) + return 0; + break; + } + } + } else { + if (m_Family == PDFCS_LAB && m_nComponents != 3) + return 0; } - if (m_Family == PDFCS_LAB && m_nComponents != 3) - return 0; m_pCompData = GetDecodeAndMaskArray(m_bDefaultDecode, m_bColorKey); if (!m_pCompData) return 0; @@ -578,28 +636,6 @@ int CPDF_DIBSource::CreateDecoder() { src_data, src_size, m_Width, m_Height, m_nComponents, bTransform)); } } - } else if (decoder == "FlateDecode") { - m_pDecoder.reset(FPDFAPI_CreateFlateDecoder( - src_data, src_size, m_Width, m_Height, m_nComponents, m_bpc, pParams)); - } else if (decoder == "JPXDecode") { - LoadJpxBitmap(); - return m_pCachedBitmap ? 1 : 0; - } else if (decoder == "JBIG2Decode") { - m_pCachedBitmap.reset(new CFX_DIBitmap); - if (!m_pCachedBitmap->Create( - m_Width, m_Height, m_bImageMask ? FXDIB_1bppMask : FXDIB_1bppRgb)) { - m_pCachedBitmap.reset(); - return 0; - } - m_Status = 1; - return 2; - } else if (decoder == "RunLengthDecode") { - m_pDecoder.reset(CPDF_ModuleMgr::Get() - ->GetCodecModule() - ->GetBasicModule() - ->CreateRunLengthDecoder(src_data, src_size, m_Width, - m_Height, m_nComponents, - m_bpc)); } if (!m_pDecoder) return 0; |