From 5110c4743751145c4ae1934cd1d83bc6c55bb43f Mon Sep 17 00:00:00 2001 From: John Abd-El-Malek Date: Sat, 17 May 2014 22:33:34 -0700 Subject: Initial commit. --- .../fpdfapi/fpdf_render/fpdf_render_loadimage.cpp | 1524 ++++++++++++++++++++ 1 file changed, 1524 insertions(+) create mode 100644 core/src/fpdfapi/fpdf_render/fpdf_render_loadimage.cpp (limited to 'core/src/fpdfapi/fpdf_render/fpdf_render_loadimage.cpp') diff --git a/core/src/fpdfapi/fpdf_render/fpdf_render_loadimage.cpp b/core/src/fpdfapi/fpdf_render/fpdf_render_loadimage.cpp new file mode 100644 index 0000000000..fcb5271cc3 --- /dev/null +++ b/core/src/fpdfapi/fpdf_render/fpdf_render_loadimage.cpp @@ -0,0 +1,1524 @@ +// 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 "../../../include/fxge/fx_ge.h" +#include "../../../include/fxcodec/fx_codec.h" +#include "../../../include/fpdfapi/fpdf_module.h" +#include "../../../include/fpdfapi/fpdf_render.h" +#include "../../../include/fpdfapi/fpdf_pageobj.h" +#include "../fpdf_page/pageint.h" +#include "render_int.h" +#include +static unsigned int _GetBits8(FX_LPCBYTE pData, int bitpos, int nbits) +{ + unsigned int byte = pData[bitpos / 8]; + if (nbits == 8) { + return byte; + } else if (nbits == 4) { + return (bitpos % 8) ? (byte & 0x0f) : (byte >> 4); + } else if (nbits == 2) { + return (byte >> (6 - bitpos % 8)) & 0x03; + } else if (nbits == 1) { + return (byte >> (7 - bitpos % 8)) & 0x01; + } else if (nbits == 16) { + return byte * 256 + pData[bitpos / 8 + 1]; + } + return 0; +} +CFX_DIBSource* CPDF_Image::LoadDIBSource(CFX_DIBSource** ppMask, FX_DWORD* pMatteColor, FX_BOOL bStdCS, FX_DWORD GroupFamily, FX_BOOL bLoadMask) const +{ + CPDF_DIBSource* pSource = FX_NEW CPDF_DIBSource; + if (pSource->Load(m_pDocument, m_pStream, (CPDF_DIBSource**)ppMask, pMatteColor, NULL, NULL, bStdCS, GroupFamily, bLoadMask)) { + return pSource; + } + delete pSource; + return NULL; +} +CFX_DIBSource* CPDF_Image::DetachBitmap() +{ + CFX_DIBSource* pBitmap = m_pDIBSource; + m_pDIBSource = NULL; + return pBitmap; +} +CFX_DIBSource* CPDF_Image::DetachMask() +{ + CFX_DIBSource* pBitmap = m_pMask; + m_pMask = NULL; + return pBitmap; +} +FX_BOOL CPDF_Image::StartLoadDIBSource(CPDF_Dictionary* pFormResource, CPDF_Dictionary* pPageResource, FX_BOOL bStdCS, FX_DWORD GroupFamily, FX_BOOL bLoadMask) +{ + m_pDIBSource = FX_NEW CPDF_DIBSource; + int ret = ((CPDF_DIBSource*)m_pDIBSource)->StartLoadDIBSource(m_pDocument, m_pStream, TRUE, pFormResource, pPageResource, bStdCS, GroupFamily, bLoadMask); + if (ret == 2) { + return TRUE; + } + if (!ret) { + delete m_pDIBSource; + m_pDIBSource = NULL; + return FALSE; + } + m_pMask = ((CPDF_DIBSource*)m_pDIBSource)->DetachMask(); + m_MatteColor = ((CPDF_DIBSource*)m_pDIBSource)->m_MatteColor; + return FALSE; +} +FX_BOOL CPDF_Image::Continue(IFX_Pause* pPause) +{ + int ret = ((CPDF_DIBSource*)m_pDIBSource)->ContinueLoadDIBSource(pPause); + if (ret == 2) { + return TRUE; + } + if (!ret) { + delete m_pDIBSource; + m_pDIBSource = NULL; + return FALSE; + } + m_pMask = ((CPDF_DIBSource*)m_pDIBSource)->DetachMask(); + m_MatteColor = ((CPDF_DIBSource*)m_pDIBSource)->m_MatteColor; + return FALSE; +} +CPDF_DIBSource::CPDF_DIBSource() +{ + m_pDocument = NULL; + m_pStreamAcc = NULL; + m_pDict = NULL; + m_bpp = 0; + m_Width = m_Height = 0; + m_pColorSpace = NULL; + m_bDefaultDecode = TRUE; + m_bImageMask = FALSE; + m_pPalette = NULL; + m_pCompData = NULL; + m_bColorKey = FALSE; + m_pMaskedLine = m_pLineBuf = NULL; + m_pCachedBitmap = NULL; + m_pDecoder = NULL; + m_nComponents = 0; + m_bpc = 0; + m_bLoadMask = FALSE; + m_Family = 0; + m_pMask = NULL; + m_MatteColor = 0; + m_pJbig2Context = NULL; + m_pGlobalStream = NULL; + m_bStdCS = FALSE; + m_pMaskStream = NULL; + m_Status = 0; + m_bHasMask = FALSE; +} +CPDF_DIBSource::~CPDF_DIBSource() +{ + if (m_pStreamAcc) { + delete m_pStreamAcc; + } + if (m_pMaskedLine) { + FX_Free(m_pMaskedLine); + } + if (m_pLineBuf) { + FX_Free(m_pLineBuf); + } + if (m_pCachedBitmap) { + delete m_pCachedBitmap; + } + if (m_pDecoder) { + delete m_pDecoder; + } + if (m_pCompData) { + FX_Free(m_pCompData); + } + CPDF_ColorSpace* pCS = m_pColorSpace; + if (pCS && m_pDocument) { + m_pDocument->GetPageData()->ReleaseColorSpace(pCS->GetArray()); + } + if (m_pJbig2Context) { + ICodec_Jbig2Module* pJbig2Moudle = CPDF_ModuleMgr::Get()->GetJbig2Module(); + pJbig2Moudle->DestroyJbig2Context(m_pJbig2Context); + m_pJbig2Context = NULL; + } + if (m_pGlobalStream) { + delete m_pGlobalStream; + } + m_pGlobalStream = NULL; +} +CFX_DIBitmap* CPDF_DIBSource::GetBitmap() const +{ + if (m_pCachedBitmap) { + return m_pCachedBitmap; + } + return Clone(); +} +void CPDF_DIBSource::ReleaseBitmap(CFX_DIBitmap* pBitmap) const +{ + if (pBitmap && pBitmap != m_pCachedBitmap) { + delete pBitmap; + } +} +FX_BOOL CPDF_DIBSource::Load(CPDF_Document* pDoc, const CPDF_Stream* pStream, CPDF_DIBSource** ppMask, + FX_DWORD* pMatteColor, CPDF_Dictionary* pFormResources, CPDF_Dictionary* pPageResources, FX_BOOL bStdCS, FX_DWORD GroupFamily, FX_BOOL bLoadMask) +{ + if (pStream == NULL) { + return FALSE; + } + m_pDocument = pDoc; + m_pDict = pStream->GetDict(); + m_pStream = pStream; + m_Width = m_pDict->GetInteger(FX_BSTRC("Width")); + m_Height = m_pDict->GetInteger(FX_BSTRC("Height")); + if (m_Width <= 0 || m_Height <= 0 || m_Width > 0x01ffff || m_Height > 0x01ffff) { + return FALSE; + } + m_GroupFamily = GroupFamily; + m_bLoadMask = bLoadMask; + if (!LoadColorInfo(m_pStream->GetObjNum() != 0 ? NULL : pFormResources, pPageResources)) { + return FALSE; + } + FX_DWORD src_pitch = m_bpc; + if (m_bpc != 0 && m_nComponents != 0) { + if (src_pitch > 0 && m_nComponents > (unsigned)INT_MAX / src_pitch) { + return FALSE; + } + src_pitch *= m_nComponents; + if (src_pitch > 0 && (FX_DWORD)m_Width > (unsigned)INT_MAX / src_pitch) { + return FALSE; + } + src_pitch *= m_Width; + if (src_pitch + 7 < src_pitch) { + return FALSE; + } + src_pitch += 7; + src_pitch /= 8; + if (src_pitch > 0 && (FX_DWORD)m_Height > (unsigned)INT_MAX / src_pitch) { + return FALSE; + } + } + m_pStreamAcc = FX_NEW CPDF_StreamAcc; + m_pStreamAcc->LoadAllData(pStream, FALSE, m_Height * src_pitch, TRUE); + if (m_pStreamAcc->GetSize() == 0 || m_pStreamAcc->GetData() == NULL) { + return FALSE; + } + const CFX_ByteString& decoder = m_pStreamAcc->GetImageDecoder(); + if (!decoder.IsEmpty() && decoder == FX_BSTRC("CCITTFaxDecode")) { + m_bpc = 1; + } + if (!CreateDecoder()) { + return FALSE; + } + if (m_bImageMask) { + m_bpp = 1; + m_bpc = 1; + m_nComponents = 1; + m_AlphaFlag = 1; + } else if (m_bpc * m_nComponents == 1) { + m_bpp = 1; + } else if (m_bpc * m_nComponents <= 8) { + m_bpp = 8; + } else { + m_bpp = 24; + } + if (!m_bpc || !m_nComponents) { + return FALSE; + } + m_Pitch = m_Width; + if ((FX_DWORD)m_bpp > (unsigned)INT_MAX / m_Pitch) { + return FALSE; + } + m_Pitch *= m_bpp; + if (m_Pitch + 31 < m_Pitch) { + return FALSE; + } + m_Pitch += 31; + m_Pitch = m_Pitch / 32 * 4; + m_pLineBuf = FX_Alloc(FX_BYTE, m_Pitch); + if (m_pColorSpace && bStdCS) { + m_pColorSpace->EnableStdConversion(TRUE); + } + LoadPalette(); + if (m_bColorKey) { + m_bpp = 32; + m_AlphaFlag = 2; + m_Pitch = m_Width; + if ((FX_DWORD)m_bpp > (unsigned)INT_MAX / m_Pitch) { + return FALSE; + } + m_Pitch *= m_bpp; + if (m_Pitch + 31 < m_Pitch) { + return FALSE; + } + m_Pitch += 31; + m_Pitch = m_Pitch / 32 * 4; + m_pMaskedLine = FX_Alloc(FX_BYTE, m_Pitch); + } + if (ppMask) { + *ppMask = LoadMask(*pMatteColor); + } + if (m_pColorSpace && bStdCS) { + m_pColorSpace->EnableStdConversion(FALSE); + } + return TRUE; +} +int CPDF_DIBSource::ContinueToLoadMask() +{ + if (m_bImageMask) { + m_bpp = 1; + m_bpc = 1; + m_nComponents = 1; + m_AlphaFlag = 1; + } else if (m_bpc * m_nComponents == 1) { + m_bpp = 1; + } else if (m_bpc * m_nComponents <= 8) { + m_bpp = 8; + } else { + m_bpp = 24; + } + if (!m_bpc || !m_nComponents) { + return 0; + } + m_Pitch = m_Width; + if ((FX_DWORD)m_bpp > (unsigned)INT_MAX / m_Pitch) { + return 0; + } + m_Pitch *= m_bpp; + if (m_Pitch + 31 < m_Pitch) { + return 0; + } + m_Pitch += 31; + m_Pitch = m_Pitch / 32 * 4; + m_pLineBuf = FX_Alloc(FX_BYTE, m_Pitch); + if (m_pColorSpace && m_bStdCS) { + m_pColorSpace->EnableStdConversion(TRUE); + } + LoadPalette(); + if (m_bColorKey) { + m_bpp = 32; + m_AlphaFlag = 2; + m_Pitch = m_Width; + if ((FX_DWORD)m_bpp > (unsigned)INT_MAX / m_Pitch) { + return 0; + } + m_Pitch *= m_bpp; + if (m_Pitch + 31 < m_Pitch) { + return 0; + } + m_Pitch += 31; + m_Pitch = m_Pitch / 32 * 4; + m_pMaskedLine = FX_Alloc(FX_BYTE, m_Pitch); + } + return 1; +} +int CPDF_DIBSource::StartLoadDIBSource(CPDF_Document* pDoc, const CPDF_Stream* pStream, FX_BOOL bHasMask, + CPDF_Dictionary* pFormResources, CPDF_Dictionary* pPageResources, + FX_BOOL bStdCS, FX_DWORD GroupFamily, FX_BOOL bLoadMask) +{ + if (pStream == NULL) { + return 0; + } + m_pDocument = pDoc; + m_pDict = pStream->GetDict(); + m_pStream = pStream; + m_bStdCS = bStdCS; + m_bHasMask = bHasMask; + m_Width = m_pDict->GetInteger(FX_BSTRC("Width")); + m_Height = m_pDict->GetInteger(FX_BSTRC("Height")); + if (m_Width <= 0 || m_Height <= 0 || m_Width > 0x01ffff || m_Height > 0x01ffff) { + return 0; + } + m_GroupFamily = GroupFamily; + m_bLoadMask = bLoadMask; + if (!LoadColorInfo(m_pStream->GetObjNum() != 0 ? NULL : pFormResources, pPageResources)) { + return 0; + } + FX_DWORD src_pitch = m_bpc; + if (m_bpc != 0 && m_nComponents != 0) { + if (src_pitch > 0 && m_nComponents > (unsigned)INT_MAX / src_pitch) { + return 0; + } + src_pitch *= m_nComponents; + if (src_pitch > 0 && (FX_DWORD)m_Width > (unsigned)INT_MAX / src_pitch) { + return 0; + } + src_pitch *= m_Width; + if (src_pitch + 7 < src_pitch) { + return 0; + } + src_pitch += 7; + src_pitch /= 8; + if (src_pitch > 0 && (FX_DWORD)m_Height > (unsigned)INT_MAX / src_pitch) { + return 0; + } + } + m_pStreamAcc = FX_NEW CPDF_StreamAcc; + m_pStreamAcc->LoadAllData(pStream, FALSE, m_Height * src_pitch, TRUE); + if (m_pStreamAcc->GetSize() == 0 || m_pStreamAcc->GetData() == NULL) { + return 0; + } + const CFX_ByteString& decoder = m_pStreamAcc->GetImageDecoder(); + if (!decoder.IsEmpty() && decoder == FX_BSTRC("CCITTFaxDecode")) { + m_bpc = 1; + } + int ret = CreateDecoder(); + if (ret != 1) { + if (!ret) { + return ret; + } + if (!ContinueToLoadMask()) { + return 0; + } + if (m_bHasMask) { + StratLoadMask(); + } + return ret; + } + if (!ContinueToLoadMask()) { + return 0; + } + if (m_bHasMask) { + ret = StratLoadMask(); + } + if (ret == 2) { + return ret; + } + if (m_pColorSpace && m_bStdCS) { + m_pColorSpace->EnableStdConversion(FALSE); + } + return ret; +} +int CPDF_DIBSource::ContinueLoadDIBSource(IFX_Pause* pPause) +{ + FXCODEC_STATUS ret; + if (m_Status == 1) { + const CFX_ByteString& decoder = m_pStreamAcc->GetImageDecoder(); + if (decoder == FX_BSTRC("JPXDecode")) { + return 0; + } + ICodec_Jbig2Module* pJbig2Moudle = CPDF_ModuleMgr::Get()->GetJbig2Module(); + if (m_pJbig2Context == NULL) { + m_pJbig2Context = pJbig2Moudle->CreateJbig2Context(); + if (m_pStreamAcc->GetImageParam()) { + CPDF_Stream* pGlobals = m_pStreamAcc->GetImageParam()->GetStream(FX_BSTRC("JBIG2Globals")); + if (pGlobals) { + m_pGlobalStream = FX_NEW CPDF_StreamAcc; + m_pGlobalStream->LoadAllData(pGlobals, FALSE); + } + } + ret = pJbig2Moudle->StartDecode(m_pJbig2Context, m_Width, m_Height, m_pStreamAcc->GetData(), m_pStreamAcc->GetSize(), + m_pGlobalStream ? m_pGlobalStream->GetData() : NULL, m_pGlobalStream ? m_pGlobalStream->GetSize() : 0, m_pCachedBitmap->GetBuffer(), + m_pCachedBitmap->GetPitch(), pPause); + if (ret < 0) { + delete m_pCachedBitmap; + m_pCachedBitmap = NULL; + if (m_pGlobalStream) { + delete m_pGlobalStream; + } + m_pGlobalStream = NULL; + pJbig2Moudle->DestroyJbig2Context(m_pJbig2Context); + m_pJbig2Context = NULL; + return 0; + } + if (ret == FXCODEC_STATUS_DECODE_TOBECONTINUE) { + return 2; + } + int ret1 = 1; + if (m_bHasMask) { + ret1 = ContinueLoadMaskDIB(pPause); + m_Status = 2; + } + if (ret1 == 2) { + return ret1; + } + if (m_pColorSpace && m_bStdCS) { + m_pColorSpace->EnableStdConversion(FALSE); + } + return ret1; + } + FXCODEC_STATUS ret = pJbig2Moudle->ContinueDecode(m_pJbig2Context, pPause); + if (ret < 0) { + delete m_pCachedBitmap; + m_pCachedBitmap = NULL; + if (m_pGlobalStream) { + delete m_pGlobalStream; + } + m_pGlobalStream = NULL; + pJbig2Moudle->DestroyJbig2Context(m_pJbig2Context); + m_pJbig2Context = NULL; + return 0; + } + if (ret == FXCODEC_STATUS_DECODE_TOBECONTINUE) { + return 2; + } + int ret1 = 1; + if (m_bHasMask) { + ret1 = ContinueLoadMaskDIB(pPause); + m_Status = 2; + } + if (ret1 == 2) { + return ret1; + } + if (m_pColorSpace && m_bStdCS) { + m_pColorSpace->EnableStdConversion(FALSE); + } + return ret1; + } else if (m_Status == 2) { + return ContinueLoadMaskDIB(pPause); + } + return 0; +} +FX_BOOL CPDF_DIBSource::LoadColorInfo(CPDF_Dictionary* pFormResources, CPDF_Dictionary* pPageResources) +{ + if (m_pDict->GetInteger("ImageMask")) { + m_bImageMask = TRUE; + } + if (m_bImageMask || !m_pDict->KeyExist(FX_BSTRC("ColorSpace"))) { + if (!m_bImageMask) { + CPDF_Object* pFilter = m_pDict->GetElementValue(FX_BSTRC("Filter")); + if (pFilter) { + CFX_ByteString filter; + if (pFilter->GetType() == PDFOBJ_NAME) { + filter = pFilter->GetString(); + if (filter == FX_BSTRC("JPXDecode")) { + return TRUE; + } + } else if (pFilter->GetType() == PDFOBJ_ARRAY) { + CPDF_Array* pArray = (CPDF_Array*)pFilter; + if (pArray->GetString(pArray->GetCount() - 1) == FX_BSTRC("JPXDecode")) { + return TRUE; + } + } + } + } + m_bImageMask = TRUE; + m_bpc = m_nComponents = 1; + CPDF_Array* pDecode = m_pDict->GetArray(FX_BSTRC("Decode")); + m_bDefaultDecode = pDecode == NULL || pDecode->GetInteger(0) == 0; + return TRUE; + } + CPDF_Object* pCSObj = m_pDict->GetElementValue(FX_BSTRC("ColorSpace")); + if (pCSObj == NULL) { + return FALSE; + } + CPDF_DocPageData* pDocPageData = m_pDocument->GetPageData(); + if (pFormResources) { + m_pColorSpace = pDocPageData->GetColorSpace(pCSObj, pFormResources); + } + if (m_pColorSpace == NULL) { + m_pColorSpace = pDocPageData->GetColorSpace(pCSObj, pPageResources); + } + if (m_pColorSpace == NULL) { + return FALSE; + } + m_bpc = m_pDict->GetInteger(FX_BSTRC("BitsPerComponent")); + m_Family = m_pColorSpace->GetFamily(); + m_nComponents = m_pColorSpace->CountComponents(); + if (m_Family == PDFCS_ICCBASED && pCSObj->GetType() == PDFOBJ_NAME) { + CFX_ByteString cs = pCSObj->GetString(); + if (cs == FX_BSTRC("DeviceGray")) { + m_nComponents = 1; + } else if (cs == FX_BSTRC("DeviceRGB")) { + m_nComponents = 3; + } else if (cs == FX_BSTRC("DeviceCMYK")) { + m_nComponents = 4; + } + } + m_pCompData = FX_Alloc(DIB_COMP_DATA, m_nComponents); + if (m_bpc == 0) { + return TRUE; + } + int max_data = (1 << m_bpc) - 1; + CPDF_Array* pDecode = m_pDict->GetArray(FX_BSTRC("Decode")); + if (pDecode) { + for (FX_DWORD i = 0; i < m_nComponents; i ++) { + m_pCompData[i].m_DecodeMin = pDecode->GetNumber(i * 2); + FX_FLOAT max = pDecode->GetNumber(i * 2 + 1); + m_pCompData[i].m_DecodeStep = (max - m_pCompData[i].m_DecodeMin) / max_data; + FX_FLOAT def_value, def_min, def_max; + m_pColorSpace->GetDefaultValue(i, def_value, def_min, def_max); + if (m_Family == PDFCS_INDEXED) { + def_max = (FX_FLOAT)max_data; + } + if (def_min != m_pCompData[i].m_DecodeMin || def_max != max) { + m_bDefaultDecode = FALSE; + } + } + } else { + for (FX_DWORD i = 0; i < m_nComponents; i ++) { + FX_FLOAT def_value; + m_pColorSpace->GetDefaultValue(i, def_value, m_pCompData[i].m_DecodeMin, m_pCompData[i].m_DecodeStep); + if (m_Family == PDFCS_INDEXED) { + m_pCompData[i].m_DecodeStep = (FX_FLOAT)max_data; + } + m_pCompData[i].m_DecodeStep = (m_pCompData[i].m_DecodeStep - m_pCompData[i].m_DecodeMin) / max_data; + } + } + if (!m_pDict->KeyExist(FX_BSTRC("SMask"))) { + CPDF_Object* pMask = m_pDict->GetElementValue(FX_BSTRC("Mask")); + if (pMask == NULL) { + return TRUE; + } + if (pMask->GetType() == PDFOBJ_ARRAY) { + CPDF_Array* pArray = (CPDF_Array*)pMask; + if (pArray->GetCount() >= m_nComponents * 2) + for (FX_DWORD i = 0; i < m_nComponents * 2; i ++) { + if (i % 2) { + m_pCompData[i / 2].m_ColorKeyMax = pArray->GetInteger(i); + } else { + m_pCompData[i / 2].m_ColorKeyMin = pArray->GetInteger(i); + } + } + m_bColorKey = TRUE; + } + } + return TRUE; +} +ICodec_ScanlineDecoder* FPDFAPI_CreateFaxDecoder(FX_LPCBYTE src_buf, FX_DWORD src_size, int width, int height, + const CPDF_Dictionary* pParams); +ICodec_ScanlineDecoder* FPDFAPI_CreateFlateDecoder(FX_LPCBYTE src_buf, FX_DWORD src_size, int width, int height, + int nComps, int bpc, const CPDF_Dictionary* pParams); +int CPDF_DIBSource::CreateDecoder() +{ + const CFX_ByteString& decoder = m_pStreamAcc->GetImageDecoder(); + if (decoder.IsEmpty()) { + return 1; + } + FX_LPCBYTE src_data = m_pStreamAcc->GetData(); + FX_DWORD src_size = m_pStreamAcc->GetSize(); + const CPDF_Dictionary* pParams = m_pStreamAcc->GetImageParam(); + if (decoder == FX_BSTRC("CCITTFaxDecode")) { + m_pDecoder = FPDFAPI_CreateFaxDecoder(src_data, src_size, m_Width, m_Height, pParams); + } else if (decoder == FX_BSTRC("DCTDecode")) { + m_pDecoder = CPDF_ModuleMgr::Get()->GetJpegModule()->CreateDecoder(src_data, src_size, m_Width, m_Height, + m_nComponents, pParams ? pParams->GetInteger(FX_BSTR("ColorTransform"), 1) : 1); + if (NULL == m_pDecoder) { + FX_BOOL bTransform = FALSE; + int comps, bpc; + ICodec_JpegModule* pJpegModule = CPDF_ModuleMgr::Get()->GetJpegModule(); + if (pJpegModule->LoadInfo(src_data, src_size, m_Width, m_Height, comps, bpc, bTransform)) { + m_nComponents = comps; + m_bpc = bpc; + m_pDecoder = CPDF_ModuleMgr::Get()->GetJpegModule()->CreateDecoder(src_data, src_size, m_Width, m_Height, + m_nComponents, bTransform); + } + } + } else if (decoder == FX_BSTRC("FlateDecode")) { + m_pDecoder = FPDFAPI_CreateFlateDecoder(src_data, src_size, m_Width, m_Height, m_nComponents, m_bpc, pParams); + } else if (decoder == FX_BSTRC("JPXDecode")) { + LoadJpxBitmap(); + return m_pCachedBitmap != NULL ? 1 : 0; + } else if (decoder == FX_BSTRC("JBIG2Decode")) { + m_pCachedBitmap = FX_NEW CFX_DIBitmap; + if (!m_pCachedBitmap->Create(m_Width, m_Height, m_bImageMask ? FXDIB_1bppMask : FXDIB_1bppRgb)) { + delete m_pCachedBitmap; + m_pCachedBitmap = NULL; + return 0; + } + m_Status = 1; + return 2; + } else if (decoder == FX_BSTRC("RunLengthDecode")) { + m_pDecoder = CPDF_ModuleMgr::Get()->GetCodecModule()->GetBasicModule()->CreateRunLengthDecoder(src_data, src_size, m_Width, m_Height, m_nComponents, m_bpc); + } + if (m_pDecoder) { + int requested_pitch = (m_Width * m_nComponents * m_bpc + 7) / 8; + int provided_pitch = (m_pDecoder->GetWidth() * m_pDecoder->CountComps() * m_pDecoder->GetBPC() + 7) / 8; + if (provided_pitch < requested_pitch) { + return 0; + } + return 1; + } + return 0; +} +void CPDF_DIBSource::LoadJpxBitmap() +{ + ICodec_JpxModule* pJpxModule = CPDF_ModuleMgr::Get()->GetJpxModule(); + if (pJpxModule == NULL) { + return; + } + FX_LPVOID ctx = pJpxModule->CreateDecoder(m_pStreamAcc->GetData(), m_pStreamAcc->GetSize(), m_pColorSpace != NULL); + if (ctx == NULL) { + return; + } + FX_DWORD width = 0, height = 0, codestream_nComps = 0, image_nComps = 0; + pJpxModule->GetImageInfo(ctx, width, height, codestream_nComps, image_nComps); + if ((int)width < m_Width || (int)height < m_Height) { + pJpxModule->DestroyDecoder(ctx); + return; + } + int output_nComps; + FX_BOOL bTranslateColor, bSwapRGB = FALSE; + if (m_pColorSpace) { + if (codestream_nComps != (FX_DWORD)m_pColorSpace->CountComponents()) { + return; + } + output_nComps = codestream_nComps; + bTranslateColor = FALSE; + if (m_pColorSpace == CPDF_ColorSpace::GetStockCS(PDFCS_DEVICERGB)) { + bSwapRGB = TRUE; + m_pColorSpace = NULL; + } + } else { + bTranslateColor = TRUE; + if (image_nComps) { + output_nComps = image_nComps; + } else { + output_nComps = codestream_nComps; + } + if (output_nComps == 3) { + bSwapRGB = TRUE; + } else if (output_nComps == 4) { + m_pColorSpace = CPDF_ColorSpace::GetStockCS(PDFCS_DEVICECMYK); + bTranslateColor = FALSE; + } + m_nComponents = output_nComps; + } + FXDIB_Format format; + if (output_nComps == 1) { + format = FXDIB_8bppRgb; + } else if (output_nComps <= 3) { + format = FXDIB_Rgb; + } else if (output_nComps == 4) { + format = FXDIB_Rgb32; + } else { + width = (width * output_nComps + 2) / 3; + format = FXDIB_Rgb; + } + m_pCachedBitmap = FX_NEW CFX_DIBitmap; + if (!m_pCachedBitmap->Create(width, height, format)) { + delete m_pCachedBitmap; + m_pCachedBitmap = NULL; + return; + } + m_pCachedBitmap->Clear(0xFFFFFFFF); + FX_LPBYTE output_offsets = FX_Alloc(FX_BYTE, output_nComps); + for (int i = 0; i < output_nComps; i ++) { + output_offsets[i] = i; + } + if (bSwapRGB) { + output_offsets[0] = 2; + output_offsets[2] = 0; + } + if (!pJpxModule->Decode(ctx, m_pCachedBitmap->GetBuffer(), m_pCachedBitmap->GetPitch(), bTranslateColor, output_offsets)) { + delete m_pCachedBitmap; + m_pCachedBitmap = NULL; + return; + } + FX_Free(output_offsets); + pJpxModule->DestroyDecoder(ctx); + if (m_pColorSpace && m_pColorSpace->GetFamily() == PDFCS_INDEXED && m_bpc < 8) { + int scale = 8 - m_bpc; + for (FX_DWORD row = 0; row < height; row ++) { + FX_LPBYTE scanline = (FX_LPBYTE)m_pCachedBitmap->GetScanline(row); + for (FX_DWORD col = 0; col < width; col ++) { + *scanline = (*scanline) >> scale; + scanline++; + } + } + } + m_bpc = 8; +} +void CPDF_DIBSource::LoadJbig2Bitmap() +{ + ICodec_Jbig2Module* pJbig2Module = CPDF_ModuleMgr::Get()->GetJbig2Module(); + if (pJbig2Module == NULL) { + return; + } + CPDF_StreamAcc* pGlobalStream = NULL; + if (m_pStreamAcc->GetImageParam()) { + CPDF_Stream* pGlobals = m_pStreamAcc->GetImageParam()->GetStream(FX_BSTRC("JBIG2Globals")); + if (pGlobals) { + pGlobalStream = FX_NEW CPDF_StreamAcc; + pGlobalStream->LoadAllData(pGlobals, FALSE); + } + } + m_pCachedBitmap = FX_NEW CFX_DIBitmap; + if (!m_pCachedBitmap->Create(m_Width, m_Height, m_bImageMask ? FXDIB_1bppMask : FXDIB_1bppRgb)) { + return; + } + int ret = pJbig2Module->Decode(m_Width, m_Height, m_pStreamAcc->GetData(), m_pStreamAcc->GetSize(), + pGlobalStream ? pGlobalStream->GetData() : NULL, pGlobalStream ? pGlobalStream->GetSize() : 0, + m_pCachedBitmap->GetBuffer(), m_pCachedBitmap->GetPitch()); + if (ret < 0) { + delete m_pCachedBitmap; + m_pCachedBitmap = NULL; + } + if (pGlobalStream) { + delete pGlobalStream; + } + m_bpc = 1; + m_nComponents = 1; +} +CPDF_DIBSource* CPDF_DIBSource::LoadMask(FX_DWORD& MatteColor) +{ + MatteColor = 0xffffffff; + CPDF_Stream* pSoftMask = m_pDict->GetStream(FX_BSTRC("SMask")); + if (pSoftMask) { + CPDF_Array* pMatte = pSoftMask->GetDict()->GetArray(FX_BSTRC("Matte")); + if (pMatte != NULL && m_pColorSpace && (FX_DWORD)m_pColorSpace->CountComponents() <= m_nComponents) { + FX_FLOAT* pColor = FX_Alloc(FX_FLOAT, m_nComponents); + for (FX_DWORD i = 0; i < m_nComponents; i ++) { + pColor[i] = pMatte->GetFloat(i); + } + FX_FLOAT R, G, B; + m_pColorSpace->GetRGB(pColor, R, G, B); + FX_Free(pColor); + MatteColor = FXARGB_MAKE(0, FXSYS_round(R * 255), FXSYS_round(G * 255), FXSYS_round(B * 255)); + } + return LoadMaskDIB(pSoftMask); + } + CPDF_Object* pMask = m_pDict->GetElementValue(FX_BSTRC("Mask")); + if (pMask == NULL) { + return NULL; + } + if (pMask->GetType() == PDFOBJ_STREAM) { + return LoadMaskDIB((CPDF_Stream*)pMask); + } + return NULL; +} +int CPDF_DIBSource::StratLoadMask() +{ + m_MatteColor = 0xffffffff; + m_pMaskStream = m_pDict->GetStream(FX_BSTRC("SMask")); + if (m_pMaskStream) { + CPDF_Array* pMatte = m_pMaskStream->GetDict()->GetArray(FX_BSTRC("Matte")); + if (pMatte != NULL && m_pColorSpace && (FX_DWORD)m_pColorSpace->CountComponents() <= m_nComponents) { + FX_FLOAT R, G, B; + FX_FLOAT* pColor = FX_Alloc(FX_FLOAT, m_nComponents); + for (FX_DWORD i = 0; i < m_nComponents; i ++) { + pColor[i] = pMatte->GetFloat(i); + } + m_pColorSpace->GetRGB(pColor, R, G, B); + FX_Free(pColor); + m_MatteColor = FXARGB_MAKE(0, FXSYS_round(R * 255), FXSYS_round(G * 255), FXSYS_round(B * 255)); + } + return StartLoadMaskDIB(); + } + m_pMaskStream = m_pDict->GetElementValue(FX_BSTRC("Mask")); + if (m_pMaskStream == NULL) { + return 1; + } + if (m_pMaskStream->GetType() == PDFOBJ_STREAM) { + return StartLoadMaskDIB(); + } + return 1; +} +int CPDF_DIBSource::ContinueLoadMaskDIB(IFX_Pause* pPause) +{ + if (m_pMask == NULL) { + return 1; + } + int ret = m_pMask->ContinueLoadDIBSource(pPause); + if (ret == 2) { + return ret; + } + if (m_pColorSpace && m_bStdCS) { + m_pColorSpace->EnableStdConversion(FALSE); + } + if (!ret) { + delete m_pMask; + m_pMask = NULL; + return ret; + } + return 1; +} +CPDF_DIBSource* CPDF_DIBSource::DetachMask() +{ + CPDF_DIBSource* pDIBSource = m_pMask; + m_pMask = NULL; + return pDIBSource; +} +CPDF_DIBSource* CPDF_DIBSource::LoadMaskDIB(CPDF_Stream* pMask) +{ + CPDF_DIBSource* pMaskSource = FX_NEW CPDF_DIBSource; + if (!pMaskSource->Load(m_pDocument, pMask, NULL, NULL, NULL, NULL, TRUE)) { + delete pMaskSource; + return NULL; + } + return pMaskSource; +} +int CPDF_DIBSource::StartLoadMaskDIB() +{ + m_pMask = FX_NEW CPDF_DIBSource; + int ret = m_pMask->StartLoadDIBSource(m_pDocument, (CPDF_Stream*)m_pMaskStream, FALSE, NULL, NULL, TRUE); + if (ret == 2) { + if (m_Status == 0) { + m_Status = 2; + } + return 2; + } + if (!ret) { + delete m_pMask; + m_pMask = NULL; + return 1; + } + return 1; +} +void CPDF_DIBSource::LoadPalette() +{ + if (m_bpc * m_nComponents > 8) { + return; + } + if (m_pColorSpace == NULL) { + return; + } + if (m_bpc * m_nComponents == 1) { + if (m_bDefaultDecode && (m_Family == PDFCS_DEVICEGRAY || m_Family == PDFCS_DEVICERGB)) { + return; + } + if (m_pColorSpace->CountComponents() > 3) { + return; + } + FX_FLOAT color_values[3]; + color_values[0] = m_pCompData[0].m_DecodeMin; + color_values[1] = color_values[2] = color_values[0]; + FX_FLOAT R, G, B; + m_pColorSpace->GetRGB(color_values, R, G, B); + FX_ARGB argb0 = ArgbEncode(255, FXSYS_round(R * 255), FXSYS_round(G * 255), FXSYS_round(B * 255)); + color_values[0] += m_pCompData[0].m_DecodeStep; + color_values[1] += m_pCompData[0].m_DecodeStep; + color_values[2] += m_pCompData[0].m_DecodeStep; + m_pColorSpace->GetRGB(color_values, R, G, B); + FX_ARGB argb1 = ArgbEncode(255, FXSYS_round(R * 255), FXSYS_round(G * 255), FXSYS_round(B * 255)); + if (argb0 != 0xFF000000 || argb1 != 0xFFFFFFFF) { + SetPaletteArgb(0, argb0); + SetPaletteArgb(1, argb1); + } + return; + } + if (m_pColorSpace == CPDF_ColorSpace::GetStockCS(PDFCS_DEVICEGRAY) && m_bpc == 8 && m_bDefaultDecode) { + } else { + int palette_count = 1 << (m_bpc * m_nComponents); + CFX_FixedBufGrow color_values(m_nComponents); + FX_FLOAT* color_value = color_values; + for (int i = 0; i < palette_count; i ++) { + int color_data = i; + for (FX_DWORD j = 0; j < m_nComponents; j ++) { + int encoded_component = color_data % (1 << m_bpc); + color_data /= 1 << m_bpc; + color_value[j] = m_pCompData[j].m_DecodeMin + m_pCompData[j].m_DecodeStep * encoded_component; + } + FX_FLOAT R = 0, G = 0, B = 0; + if (m_nComponents == 1 && m_Family == PDFCS_ICCBASED && m_pColorSpace->CountComponents() > 1) { + int nComponents = m_pColorSpace->CountComponents(); + FX_FLOAT* temp_buf = FX_Alloc(FX_FLOAT, nComponents); + for (int i = 0; i < nComponents; i++) { + temp_buf[i] = *color_value; + } + m_pColorSpace->GetRGB(temp_buf, R, G, B); + FX_Free(temp_buf); + } else { + m_pColorSpace->GetRGB(color_value, R, G, B); + } + SetPaletteArgb(i, ArgbEncode(255, FXSYS_round(R * 255), FXSYS_round(G * 255), FXSYS_round(B * 255))); + } + } +} + +FX_DWORD CPDF_DIBSource::GetValidBpp() const +{ + FX_DWORD bpc = m_bpc; + CPDF_Object * pFilter = m_pDict->GetElementValue(FX_BSTRC("Filter")); + if(pFilter) + { + if(pFilter->GetType() == PDFOBJ_NAME) + { + CFX_ByteString filter = pFilter->GetString(); + if(filter == FX_BSTRC("CCITTFaxDecode") || filter == FX_BSTRC("JBIG2Decode") ) + bpc = 1; + if(filter == FX_BSTRC("RunLengthDecode") || filter == FX_BSTRC("DCTDecode") ) + bpc = 8; + } + else if (pFilter->GetType() == PDFOBJ_ARRAY) + { + CPDF_Array *pArray = (CPDF_Array *) pFilter; + if( pArray->GetString(pArray->GetCount() -1) == FX_BSTRC("CCITTFacDecode") || + pArray->GetString(pArray->GetCount() -1) == FX_BSTRC("JBIG2Decode") ) + bpc = 1; + + if( pArray->GetString(pArray->GetCount() -1) == FX_BSTRC("RunLengthDecode") || + pArray->GetString(pArray->GetCount() -1) == FX_BSTRC("DCTDecode") ) + bpc = 8; + } + } + + return bpc; +} + +#define NORMALCOLOR_MAX(color, max) (color) > (max) ? (max) : (color) < 0 ? 0 : (color); +void CPDF_DIBSource::TranslateScanline24bpp(FX_LPBYTE dest_scan, FX_LPCBYTE src_scan) const +{ + int max_data = (1 << m_bpc) - 1; + if (m_bDefaultDecode) { + if (m_Family == PDFCS_DEVICERGB || m_Family == PDFCS_CALRGB) { + if (m_bpc == 16) { + FX_LPBYTE dest_pos = dest_scan; + FX_LPCBYTE src_pos = src_scan; + for (int col = 0; col < m_Width; col ++) { + *dest_scan++ = src_pos[4]; + *dest_scan++ = src_pos[2]; + *dest_scan++ = *src_pos; + src_pos += 6; + } + } else if (m_bpc == 8) { + FX_LPBYTE dest_pos = dest_scan; + FX_LPCBYTE src_pos = src_scan; + for (int column = 0; column < m_Width; column ++) { + *dest_scan++ = src_pos[2]; + *dest_scan++ = src_pos[1]; + *dest_scan++ = *src_pos; + src_pos += 3; + } + } else { + int src_bit_pos = 0; + int dest_byte_pos = 0; + + FX_DWORD bpc = GetValidBpp(); + + for (int column = 0; column < m_Width; column ++) { + int R = _GetBits8(src_scan, src_bit_pos, bpc); + src_bit_pos += bpc; + int G = _GetBits8(src_scan, src_bit_pos, bpc); + src_bit_pos += bpc; + int B = _GetBits8(src_scan, src_bit_pos, bpc); + src_bit_pos += bpc; + R = NORMALCOLOR_MAX(R, max_data); + G = NORMALCOLOR_MAX(G, max_data); + B = NORMALCOLOR_MAX(B, max_data); + dest_scan[dest_byte_pos] = B * 255 / max_data; + dest_scan[dest_byte_pos + 1] = G * 255 / max_data; + dest_scan[dest_byte_pos + 2] = R * 255 / max_data; + dest_byte_pos += 3; + } + } + return; + } else if (m_bpc == 8) { + if (m_nComponents == m_pColorSpace->CountComponents()) + m_pColorSpace->TranslateImageLine(dest_scan, src_scan, m_Width, m_Width, m_Height, + m_bLoadMask && m_GroupFamily == PDFCS_DEVICECMYK && m_Family == PDFCS_DEVICECMYK); + return; + } + } + CFX_FixedBufGrow color_values1(m_nComponents); + FX_FLOAT* color_values = color_values1; + FX_FLOAT R, G, B; + if (m_bpc == 8) { + int src_byte_pos = 0; + int dest_byte_pos = 0; + for (int column = 0; column < m_Width; column ++) { + for (FX_DWORD color = 0; color < m_nComponents; color ++) { + int data = src_scan[src_byte_pos ++]; + color_values[color] = m_pCompData[color].m_DecodeMin + + m_pCompData[color].m_DecodeStep * data; + } + if (m_bLoadMask && m_GroupFamily == PDFCS_DEVICECMYK && m_Family == PDFCS_DEVICECMYK) { + FX_FLOAT k = 1.0f - color_values[3]; + R = (1.0f - color_values[0]) * k; + G = (1.0f - color_values[1]) * k; + B = (1.0f - color_values[2]) * k; + } else { + m_pColorSpace->GetRGB(color_values, R, G, B); + } + R = NORMALCOLOR_MAX(R, 1); + G = NORMALCOLOR_MAX(G, 1); + B = NORMALCOLOR_MAX(B, 1); + dest_scan[dest_byte_pos] = (FX_INT32)(B * 255); + dest_scan[dest_byte_pos + 1] = (FX_INT32)(G * 255); + dest_scan[dest_byte_pos + 2] = (FX_INT32)(R * 255); + dest_byte_pos += 3; + } + } else { + int src_bit_pos = 0; + int dest_byte_pos = 0; + + FX_DWORD bpc = GetValidBpp(); + + for (int column = 0; column < m_Width; column ++) { + for (FX_DWORD color = 0; color < m_nComponents; color ++) { + int data = _GetBits8(src_scan, src_bit_pos, bpc); + color_values[color] = m_pCompData[color].m_DecodeMin + + m_pCompData[color].m_DecodeStep * data; + src_bit_pos += bpc; + } + if (m_bLoadMask && m_GroupFamily == PDFCS_DEVICECMYK && m_Family == PDFCS_DEVICECMYK) { + FX_FLOAT k = 1.0f - color_values[3]; + R = (1.0f - color_values[0]) * k; + G = (1.0f - color_values[1]) * k; + B = (1.0f - color_values[2]) * k; + } else { + m_pColorSpace->GetRGB(color_values, R, G, B); + } + R = NORMALCOLOR_MAX(R, 1); + G = NORMALCOLOR_MAX(G, 1); + B = NORMALCOLOR_MAX(B, 1); + dest_scan[dest_byte_pos] = (FX_INT32)(B * 255); + dest_scan[dest_byte_pos + 1] = (FX_INT32)(G * 255); + dest_scan[dest_byte_pos + 2] = (FX_INT32)(R * 255); + dest_byte_pos += 3; + } + } +} +FX_LPBYTE CPDF_DIBSource::GetBuffer() const +{ + if (m_pCachedBitmap) { + return m_pCachedBitmap->GetBuffer(); + } + return NULL; +} +FX_LPCBYTE CPDF_DIBSource::GetScanline(int line) const +{ + FX_DWORD src_pitch = (m_Width * m_bpc * m_nComponents + 7) / 8; + FX_LPCBYTE pSrcLine = NULL; + if (m_pCachedBitmap) { + if (line >= m_pCachedBitmap->GetHeight()) { + line = m_pCachedBitmap->GetHeight() - 1; + } + pSrcLine = m_pCachedBitmap->GetScanline(line); + } else if (m_pDecoder) { + pSrcLine = m_pDecoder->GetScanline(line); + } else { + if (m_pStreamAcc->GetSize() >= (line + 1) * src_pitch) { + pSrcLine = m_pStreamAcc->GetData() + line * src_pitch; + } + } + if (pSrcLine == NULL) { + FX_LPBYTE pLineBuf = m_pMaskedLine ? m_pMaskedLine : m_pLineBuf; + FXSYS_memset8(pLineBuf, 0xff, m_Pitch); + return pLineBuf; + } + if (m_bpc * m_nComponents == 1) { + if (m_bImageMask && m_bDefaultDecode) { + for (FX_DWORD i = 0; i < src_pitch; i ++) { + m_pLineBuf[i] = ~pSrcLine[i]; + } + } else if (m_bColorKey) { + FX_DWORD reset_argb, set_argb; + reset_argb = m_pPalette ? m_pPalette[0] : 0xff000000; + set_argb = m_pPalette ? m_pPalette[1] : 0xffffffff; + if (m_pCompData[0].m_ColorKeyMin == 0) { + reset_argb = 0; + } + if (m_pCompData[0].m_ColorKeyMax == 1) { + set_argb = 0; + } + set_argb = FXARGB_TODIB(set_argb); + reset_argb = FXARGB_TODIB(reset_argb); + FX_DWORD* dest_scan = (FX_DWORD*)m_pMaskedLine; + for (int col = 0; col < m_Width; col ++) { + if (pSrcLine[col / 8] & (1 << (7 - col % 8))) { + *dest_scan = set_argb; + } else { + *dest_scan = reset_argb; + } + dest_scan ++; + } + return m_pMaskedLine; + } else { + FXSYS_memcpy32(m_pLineBuf, pSrcLine, src_pitch); + } + return m_pLineBuf; + } + if (m_bpc * m_nComponents <= 8) { + if (m_bpc == 8) { + FXSYS_memcpy32(m_pLineBuf, pSrcLine, src_pitch); + } else { + int src_bit_pos = 0; + for (int col = 0; col < m_Width; col ++) { + int color_index = 0; + for (FX_DWORD color = 0; color < m_nComponents; color ++) { + int data = _GetBits8(pSrcLine, src_bit_pos, m_bpc); + color_index |= data << (color * m_bpc); + src_bit_pos += m_bpc; + } + m_pLineBuf[col] = color_index; + } + } + if (m_bColorKey) { + FX_LPBYTE pDestPixel = m_pMaskedLine; + FX_LPCBYTE pSrcPixel = m_pLineBuf; + for (int col = 0; col < m_Width; col ++) { + FX_BYTE index = *pSrcPixel++; + if (m_pPalette) { + *pDestPixel++ = FXARGB_B(m_pPalette[index]); + *pDestPixel++ = FXARGB_G(m_pPalette[index]); + *pDestPixel++ = FXARGB_R(m_pPalette[index]); + } else { + *pDestPixel++ = index; + *pDestPixel++ = index; + *pDestPixel++ = index; + } + *pDestPixel = (index < m_pCompData[0].m_ColorKeyMin || index > m_pCompData[0].m_ColorKeyMax) ? 0xff : 0; + pDestPixel ++ ; + } + return m_pMaskedLine; + } + return m_pLineBuf; + } + if (m_bColorKey) { + if (m_nComponents == 3 && m_bpc == 8) { + FX_LPBYTE alpha_channel = m_pMaskedLine + 3; + for (int col = 0; col < m_Width; col ++) { + FX_LPCBYTE pPixel = pSrcLine + col * 3; + alpha_channel[col * 4] = (pPixel[0] < m_pCompData[0].m_ColorKeyMin || + pPixel[0] > m_pCompData[0].m_ColorKeyMax || + pPixel[1] < m_pCompData[1].m_ColorKeyMin || pPixel[1] > m_pCompData[1].m_ColorKeyMax || + pPixel[2] < m_pCompData[2].m_ColorKeyMin || pPixel[2] > m_pCompData[2].m_ColorKeyMax) ? 0xff : 0; + } + } else { + FXSYS_memset8(m_pMaskedLine, 0xff, m_Pitch); + } + } + if (m_pColorSpace) { + TranslateScanline24bpp(m_pLineBuf, pSrcLine); + pSrcLine = m_pLineBuf; + } + if (m_bColorKey) { + FX_LPCBYTE pSrcPixel = pSrcLine; + FX_LPBYTE pDestPixel = m_pMaskedLine; + for (int col = 0; col < m_Width; col ++) { + *pDestPixel++ = *pSrcPixel++; + *pDestPixel++ = *pSrcPixel++; + *pDestPixel++ = *pSrcPixel++; + pDestPixel ++; + } + return m_pMaskedLine; + } + return pSrcLine; +} +FX_BOOL CPDF_DIBSource::SkipToScanline(int line, IFX_Pause* pPause) const +{ + if (m_pDecoder) { + return m_pDecoder->SkipToScanline(line, pPause); + } + return FALSE; +} +void CPDF_DIBSource::DownSampleScanline(int line, FX_LPBYTE dest_scan, int dest_bpp, + int dest_width, FX_BOOL bFlipX, int clip_left, int clip_width) const +{ + FX_DWORD src_width = m_Width; + FX_DWORD src_pitch = (src_width * m_bpc * m_nComponents + 7) / 8; + FX_LPCBYTE pSrcLine = NULL; + if (m_pCachedBitmap) { + pSrcLine = m_pCachedBitmap->GetScanline(line); + } else if (m_pDecoder) { + pSrcLine = m_pDecoder->GetScanline(line); + } else { + if (m_pStreamAcc->GetSize() >= (line + 1) * src_pitch) { + pSrcLine = m_pStreamAcc->GetData() + line * src_pitch; + } + } + int orig_Bpp = m_bpc * m_nComponents / 8; + int dest_Bpp = dest_bpp / 8; + if (pSrcLine == NULL) { + FXSYS_memset32(dest_scan, 0xff, dest_Bpp * clip_width); + return; + } + CFX_FixedBufGrow temp(orig_Bpp); + if (m_bpc * m_nComponents == 1) { + FX_DWORD set_argb = (FX_DWORD) - 1, reset_argb = 0; + if (m_bImageMask) { + if (m_bDefaultDecode) { + set_argb = 0; + reset_argb = (FX_DWORD) - 1; + } + } else if (m_bColorKey) { + reset_argb = m_pPalette ? m_pPalette[0] : 0xff000000; + set_argb = m_pPalette ? m_pPalette[1] : 0xffffffff; + if (m_pCompData[0].m_ColorKeyMin == 0) { + reset_argb = 0; + } + if (m_pCompData[0].m_ColorKeyMax == 1) { + set_argb = 0; + } + set_argb = FXARGB_TODIB(set_argb); + reset_argb = FXARGB_TODIB(reset_argb); + for (int i = 0; i < clip_width; i ++) { + FX_DWORD src_x = (clip_left + i) * src_width / dest_width; + if (bFlipX) { + src_x = src_width - src_x - 1; + } + src_x %= src_width; + if (pSrcLine[src_x / 8] & (1 << (7 - src_x % 8))) { + ((FX_DWORD*)dest_scan)[i] = set_argb; + } else { + ((FX_DWORD*)dest_scan)[i] = reset_argb; + } + } + return; + } else { + if (dest_Bpp == 1) { + } else if (m_pPalette) { + reset_argb = m_pPalette[0]; + set_argb = m_pPalette[1]; + } + } + for (int i = 0; i < clip_width; i ++) { + FX_DWORD src_x = (clip_left + i) * src_width / dest_width; + if (bFlipX) { + src_x = src_width - src_x - 1; + } + src_x %= src_width; + int dest_pos = i * dest_Bpp; + if (pSrcLine[src_x / 8] & (1 << (7 - src_x % 8))) { + if (dest_Bpp == 1) { + dest_scan[dest_pos] = (FX_BYTE)set_argb; + } else if (dest_Bpp == 3) { + dest_scan[dest_pos] = FXARGB_B(set_argb); + dest_scan[dest_pos + 1] = FXARGB_G(set_argb); + dest_scan[dest_pos + 2] = FXARGB_R(set_argb); + } else { + *(FX_DWORD*)(dest_scan + dest_pos) = set_argb; + } + } else { + if (dest_Bpp == 1) { + dest_scan[dest_pos] = (FX_BYTE)reset_argb; + } else if (dest_Bpp == 3) { + dest_scan[dest_pos] = FXARGB_B(reset_argb); + dest_scan[dest_pos + 1] = FXARGB_G(reset_argb); + dest_scan[dest_pos + 2] = FXARGB_R(reset_argb); + } else { + *(FX_DWORD*)(dest_scan + dest_pos) = reset_argb; + } + } + } + return; + } else if (m_bpc * m_nComponents <= 8) { + if (m_bpc < 8) { + int src_bit_pos = 0; + for (FX_DWORD col = 0; col < src_width; col ++) { + int color_index = 0; + for (FX_DWORD color = 0; color < m_nComponents; color ++) { + int data = _GetBits8(pSrcLine, src_bit_pos, m_bpc); + color_index |= data << (color * m_bpc); + src_bit_pos += m_bpc; + } + m_pLineBuf[col] = color_index; + } + pSrcLine = m_pLineBuf; + } + if (m_bColorKey) { + for (int i = 0; i < clip_width; i ++) { + FX_DWORD src_x = (clip_left + i) * src_width / dest_width; + if (bFlipX) { + src_x = src_width - src_x - 1; + } + src_x %= src_width; + FX_LPBYTE pDestPixel = dest_scan + i * 4; + FX_BYTE index = pSrcLine[src_x]; + if (m_pPalette) { + *pDestPixel++ = FXARGB_B(m_pPalette[index]); + *pDestPixel++ = FXARGB_G(m_pPalette[index]); + *pDestPixel++ = FXARGB_R(m_pPalette[index]); + } else { + *pDestPixel++ = index; + *pDestPixel++ = index; + *pDestPixel++ = index; + } + *pDestPixel = (index < m_pCompData[0].m_ColorKeyMin || index > m_pCompData[0].m_ColorKeyMax) ? 0xff : 0; + } + return; + } + for (int i = 0; i < clip_width; i ++) { + FX_DWORD src_x = (clip_left + i) * src_width / dest_width; + if (bFlipX) { + src_x = src_width - src_x - 1; + } + src_x %= src_width; + FX_BYTE index = pSrcLine[src_x]; + if (dest_Bpp == 1) { + dest_scan[i] = index; + } else { + int dest_pos = i * dest_Bpp; + FX_ARGB argb = m_pPalette[index]; + dest_scan[dest_pos] = FXARGB_B(argb); + dest_scan[dest_pos + 1] = FXARGB_G(argb); + dest_scan[dest_pos + 2] = FXARGB_R(argb); + } + } + return; + } else { + int last_src_x = -1; + FX_ARGB last_argb; + FX_FLOAT orig_Not8Bpp = (FX_FLOAT)m_bpc * (FX_FLOAT)m_nComponents / 8.0f; + FX_FLOAT unit_To8Bpc = 255.0f / ((1 << m_bpc) - 1); + for (int i = 0; i < clip_width; i ++) { + int dest_x = clip_left + i; + FX_DWORD src_x = (bFlipX ? (dest_width - dest_x - 1) : dest_x) * (FX_INT64)src_width / dest_width; + src_x %= src_width; + FX_LPCBYTE pSrcPixel = NULL; + if (m_bpc % 8 == 0) { + pSrcPixel = pSrcLine + src_x * orig_Bpp; + } else { + pSrcPixel = pSrcLine + (int)(src_x * orig_Not8Bpp); + } + FX_LPBYTE pDestPixel = dest_scan + i * dest_Bpp; + FX_ARGB argb; + if (src_x == last_src_x) { + argb = last_argb; + } else { + if (m_pColorSpace) { + FX_BYTE color[4]; + if (!m_bDefaultDecode) { + for (int i = 0; i < orig_Bpp; i ++) { + int color_value = (int)((m_pCompData[i].m_DecodeMin + m_pCompData[i].m_DecodeStep * (FX_FLOAT)pSrcPixel[i]) * 255.0f + 0.5f); + temp[i] = color_value > 255 ? 255 : (color_value < 0 ? 0 : color_value); + } + m_pColorSpace->TranslateImageLine(color, temp, 1, 0, 0, m_bLoadMask && m_GroupFamily == PDFCS_DEVICECMYK && m_Family == PDFCS_DEVICECMYK); + } else { + if (m_bpc < 8) { + int src_bit_pos = 0; + if (src_x % 2) { + src_bit_pos = 4; + } + int value = (1 << m_bpc) - 1; + for (FX_DWORD i = 0; i < m_nComponents; i ++) { + temp[i] = (FX_BYTE)(_GetBits8(pSrcPixel, src_bit_pos, m_bpc) * unit_To8Bpc); + src_bit_pos += m_bpc; + } + m_pColorSpace->TranslateImageLine(color, temp, 1, 0, 0, m_bLoadMask && m_GroupFamily == PDFCS_DEVICECMYK && m_Family == PDFCS_DEVICECMYK); + } else { + m_pColorSpace->TranslateImageLine(color, pSrcPixel, 1, 0, 0, m_bLoadMask && m_GroupFamily == PDFCS_DEVICECMYK && m_Family == PDFCS_DEVICECMYK); + } + } + argb = FXARGB_MAKE(0xff, color[2], color[1], color[0]); + } else { + argb = FXARGB_MAKE(0xff, pSrcPixel[2], pSrcPixel[1], pSrcPixel[0]); + } + if (m_bColorKey) { + int alpha = 0xff; + if (m_nComponents == 3 && m_bpc == 8) { + alpha = (pSrcPixel[0] < m_pCompData[0].m_ColorKeyMin || + pSrcPixel[0] > m_pCompData[0].m_ColorKeyMax || + pSrcPixel[1] < m_pCompData[1].m_ColorKeyMin || + pSrcPixel[1] > m_pCompData[1].m_ColorKeyMax || + pSrcPixel[2] < m_pCompData[2].m_ColorKeyMin || + pSrcPixel[2] > m_pCompData[2].m_ColorKeyMax) ? 0xff : 0; + } + argb &= 0xffffff; + argb |= alpha << 24; + } + last_src_x = src_x; + last_argb = argb; + } + if (dest_Bpp == 4) { + *(FX_DWORD*)pDestPixel = FXARGB_TODIB(argb); + } else { + *pDestPixel++ = FXARGB_B(argb); + *pDestPixel++ = FXARGB_G(argb); + *pDestPixel = FXARGB_R(argb); + } + } + } +} +void CPDF_DIBSource::SetDownSampleSize(int dest_width, int dest_height) const +{ + if (m_pDecoder) { + m_pDecoder->DownScale(dest_width, dest_height); + ((CPDF_DIBSource*)this)->m_Width = m_pDecoder->GetWidth(); + ((CPDF_DIBSource*)this)->m_Height = m_pDecoder->GetHeight(); + } +} +void CPDF_DIBSource::ClearImageData() +{ + if (m_pDecoder) { + m_pDecoder->ClearImageData(); + } +} +CPDF_ProgressiveImageLoaderHandle::CPDF_ProgressiveImageLoaderHandle() +{ + m_pImageLoader = NULL; + m_pCache = NULL; + m_pImage = NULL; +} +CPDF_ProgressiveImageLoaderHandle::~CPDF_ProgressiveImageLoaderHandle() +{ + m_pImageLoader = NULL; + m_pCache = NULL; + m_pImage = NULL; +} +FX_BOOL CPDF_ProgressiveImageLoaderHandle::Start(CPDF_ImageLoader* pImageLoader, const CPDF_ImageObject* pImage, CPDF_PageRenderCache* pCache, FX_BOOL bStdCS, FX_DWORD GroupFamily, FX_BOOL bLoadMask, CPDF_RenderStatus* pRenderStatus, FX_INT32 nDownsampleWidth, FX_INT32 nDownsampleHeight) +{ + m_pImageLoader = pImageLoader; + m_pCache = pCache; + m_pImage = (CPDF_ImageObject*)pImage; + m_nDownsampleWidth = nDownsampleWidth; + m_nDownsampleHeight = nDownsampleHeight; + FX_BOOL ret; + if (pCache) { + ret = pCache->StartGetCachedBitmap(pImage->m_pImage->GetStream(), bStdCS, GroupFamily, bLoadMask, pRenderStatus, m_nDownsampleWidth, m_nDownsampleHeight); + if (ret == FALSE) { + m_pImageLoader->m_bCached = TRUE; + m_pImageLoader->m_pBitmap = pCache->m_pCurImageCache->DetachBitmap(); + m_pImageLoader->m_pMask = pCache->m_pCurImageCache->DetachMask(); + m_pImageLoader->m_MatteColor = pCache->m_pCurImageCache->m_MatteColor; + } + } else { + ret = pImage->m_pImage->StartLoadDIBSource(pRenderStatus->m_pFormResource, pRenderStatus->m_pPageResource, bStdCS, GroupFamily, bLoadMask); + if (ret == FALSE) { + m_pImageLoader->m_bCached = FALSE; + m_pImageLoader->m_pBitmap = m_pImage->m_pImage->DetachBitmap(); + m_pImageLoader->m_pMask = m_pImage->m_pImage->DetachMask(); + m_pImageLoader->m_MatteColor = m_pImage->m_pImage->m_MatteColor; + } + } + return ret; +} +FX_BOOL CPDF_ProgressiveImageLoaderHandle::Continue(IFX_Pause* pPause) +{ + FX_BOOL ret; + if (m_pCache) { + ret = m_pCache->Continue(pPause); + if (ret == FALSE) { + m_pImageLoader->m_bCached = TRUE; + m_pImageLoader->m_pBitmap = m_pCache->m_pCurImageCache->DetachBitmap(); + m_pImageLoader->m_pMask = m_pCache->m_pCurImageCache->DetachMask(); + m_pImageLoader->m_MatteColor = m_pCache->m_pCurImageCache->m_MatteColor; + } + } else { + ret = m_pImage->m_pImage->Continue(pPause); + if (ret == FALSE) { + m_pImageLoader->m_bCached = FALSE; + m_pImageLoader->m_pBitmap = m_pImage->m_pImage->DetachBitmap(); + m_pImageLoader->m_pMask = m_pImage->m_pImage->DetachMask(); + m_pImageLoader->m_MatteColor = m_pImage->m_pImage->m_MatteColor; + } + } + return ret; +} +FX_BOOL CPDF_ImageLoader::Load(const CPDF_ImageObject* pImage, CPDF_PageRenderCache* pCache, FX_BOOL bStdCS, FX_DWORD GroupFamily, FX_BOOL bLoadMask, CPDF_RenderStatus* pRenderStatus) +{ + if (pImage == NULL) { + return FALSE; + } + if (pCache) { + pCache->GetCachedBitmap(pImage->m_pImage->GetStream(), m_pBitmap, m_pMask, m_MatteColor, bStdCS, GroupFamily, bLoadMask, pRenderStatus, m_nDownsampleWidth, m_nDownsampleHeight); + m_bCached = TRUE; + } else { + m_pBitmap = pImage->m_pImage->LoadDIBSource(&m_pMask, &m_MatteColor, bStdCS, GroupFamily, bLoadMask); + m_bCached = FALSE; + } + return FALSE; +} +FX_BOOL CPDF_ImageLoader::StartLoadImage(const CPDF_ImageObject* pImage, CPDF_PageRenderCache* pCache, FX_LPVOID& LoadHandle, FX_BOOL bStdCS, FX_DWORD GroupFamily, FX_BOOL bLoadMask, CPDF_RenderStatus* pRenderStatus, FX_INT32 nDownsampleWidth, FX_INT32 nDownsampleHeight) +{ + m_nDownsampleWidth = nDownsampleWidth; + m_nDownsampleHeight = nDownsampleHeight; + CPDF_ProgressiveImageLoaderHandle* pLoaderHandle = NULL; + pLoaderHandle = FX_NEW CPDF_ProgressiveImageLoaderHandle; + FX_BOOL ret = pLoaderHandle->Start(this, pImage, pCache, bStdCS, GroupFamily, bLoadMask, pRenderStatus, m_nDownsampleWidth, m_nDownsampleHeight); + LoadHandle = pLoaderHandle; + return ret; +} +FX_BOOL CPDF_ImageLoader::Continue(FX_LPVOID LoadHandle, IFX_Pause* pPause) +{ + return ((CPDF_ProgressiveImageLoaderHandle*)LoadHandle)->Continue(pPause); +} +CPDF_ImageLoader::~CPDF_ImageLoader() +{ + if (!m_bCached) { + if (m_pBitmap) { + delete m_pBitmap; + m_pBitmap = NULL; + } + if (m_pMask) { + delete m_pMask; + } + } +} -- cgit v1.2.3