diff options
Diffstat (limited to 'core/src/fpdfapi/fpdf_render/fpdf_render_loadimage.cpp')
| -rw-r--r-- | core/src/fpdfapi/fpdf_render/fpdf_render_loadimage.cpp | 1524 |
1 files changed, 1524 insertions, 0 deletions
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 <limits.h>
+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<FX_FLOAT, 16> 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<FX_FLOAT, 16> 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<FX_BYTE, 128> 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;
+ }
+ }
+}
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