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-rw-r--r--core/fpdfapi/render/cpdf_dibsource.cpp185
-rw-r--r--core/fpdfapi/render/cpdf_dibsource.h2
2 files changed, 78 insertions, 109 deletions
diff --git a/core/fpdfapi/render/cpdf_dibsource.cpp b/core/fpdfapi/render/cpdf_dibsource.cpp
index 5104f7b618..3cd18909eb 100644
--- a/core/fpdfapi/render/cpdf_dibsource.cpp
+++ b/core/fpdfapi/render/cpdf_dibsource.cpp
@@ -212,7 +212,7 @@ bool CPDF_DIBSource::Load(CPDF_Document* pDoc, const CPDF_Stream* pStream) {
return true;
}
-int CPDF_DIBSource::ContinueToLoadMask() {
+bool CPDF_DIBSource::ContinueToLoadMask() {
if (m_bImageMask) {
m_bpp = 1;
m_bpc = 1;
@@ -226,12 +226,12 @@ int CPDF_DIBSource::ContinueToLoadMask() {
m_bpp = 24;
}
if (!m_bpc || !m_nComponents) {
- return 0;
+ return false;
}
FX_SAFE_UINT32 pitch = CalculatePitch32(m_bpp, m_Width);
- if (!pitch.IsValid()) {
- return 0;
- }
+ if (!pitch.IsValid())
+ return false;
+
m_pLineBuf = FX_Alloc(uint8_t, pitch.ValueOrDie());
if (m_pColorSpace && m_bStdCS) {
m_pColorSpace->EnableStdConversion(true);
@@ -241,13 +241,12 @@ int CPDF_DIBSource::ContinueToLoadMask() {
m_bpp = 32;
m_AlphaFlag = 2;
pitch = CalculatePitch32(m_bpp, m_Width);
- if (!pitch.IsValid()) {
- return 0;
- }
+ if (!pitch.IsValid())
+ return false;
m_pMaskedLine = FX_Alloc(uint8_t, pitch.ValueOrDie());
}
m_Pitch = pitch.ValueOrDie();
- return 1;
+ return true;
}
int CPDF_DIBSource::StartLoadDIBSource(CPDF_Document* pDoc,
@@ -258,9 +257,9 @@ int CPDF_DIBSource::StartLoadDIBSource(CPDF_Document* pDoc,
bool bStdCS,
uint32_t GroupFamily,
bool bLoadMask) {
- if (!pStream) {
+ if (!pStream)
return 0;
- }
+
m_pDocument = pDoc;
m_pDict = pStream->GetDict();
m_pStream = pStream;
@@ -278,118 +277,88 @@ int CPDF_DIBSource::StartLoadDIBSource(CPDF_Document* pDoc,
pPageResources)) {
return 0;
}
- if (m_bDoBpcCheck && (m_bpc == 0 || m_nComponents == 0)) {
+ if (m_bDoBpcCheck && (m_bpc == 0 || m_nComponents == 0))
return 0;
- }
+
FX_SAFE_UINT32 src_size =
CalculatePitch8(m_bpc, m_nComponents, m_Width) * m_Height;
- if (!src_size.IsValid()) {
+ if (!src_size.IsValid())
return 0;
- }
+
m_pStreamAcc = pdfium::MakeRetain<CPDF_StreamAcc>(pStream);
m_pStreamAcc->LoadAllData(false, src_size.ValueOrDie(), true);
- if (m_pStreamAcc->GetSize() == 0 || !m_pStreamAcc->GetData()) {
+ if (m_pStreamAcc->GetSize() == 0 || !m_pStreamAcc->GetData())
return 0;
- }
- int ret = CreateDecoder();
- if (!ret)
- return ret;
- if (ret != 1) {
- if (!ContinueToLoadMask()) {
- return 0;
- }
- if (m_bHasMask) {
- StartLoadMask();
- }
- return ret;
- }
- if (!ContinueToLoadMask()) {
+ int iCreatedDecoder = CreateDecoder();
+ if (!iCreatedDecoder)
return 0;
- }
- if (m_bHasMask) {
- ret = StartLoadMask();
- }
- if (ret == 2) {
- return ret;
- }
- if (m_pColorSpace && m_bStdCS) {
+
+ if (!ContinueToLoadMask())
+ return 0;
+
+ int iLoadedMask = m_bHasMask ? StartLoadMask() : 1;
+ if (iCreatedDecoder == 2 || iLoadedMask == 2)
+ return 2;
+
+ ASSERT(iCreatedDecoder == 1);
+ ASSERT(iLoadedMask == 1);
+ if (m_pColorSpace && m_bStdCS)
m_pColorSpace->EnableStdConversion(false);
- }
- return ret;
+ return 1;
}
int CPDF_DIBSource::ContinueLoadDIBSource(IFX_PauseIndicator* pPause) {
- FXCODEC_STATUS ret;
- if (m_Status == 1) {
- const ByteString& decoder = m_pStreamAcc->GetImageDecoder();
- if (decoder == "JPXDecode") {
- return 0;
- }
- CCodec_Jbig2Module* pJbig2Module = CPDF_ModuleMgr::Get()->GetJbig2Module();
- if (!m_pJbig2Context) {
- m_pJbig2Context = pdfium::MakeUnique<CCodec_Jbig2Context>();
- if (m_pStreamAcc->GetImageParam()) {
- CPDF_Stream* pGlobals =
- m_pStreamAcc->GetImageParam()->GetStreamFor("JBIG2Globals");
- if (pGlobals) {
- m_pGlobalStream = pdfium::MakeRetain<CPDF_StreamAcc>(pGlobals);
- m_pGlobalStream->LoadAllData(false);
- }
- }
- ret = pJbig2Module->StartDecode(
- m_pJbig2Context.get(), m_pDocument->CodecContext(), m_Width, m_Height,
- m_pStreamAcc, m_pGlobalStream, m_pCachedBitmap->GetBuffer(),
- m_pCachedBitmap->GetPitch(), pPause);
- if (ret < 0) {
- m_pCachedBitmap.Reset();
- m_pGlobalStream.Reset();
- m_pJbig2Context.reset();
- 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);
+ if (m_Status == 2)
+ return ContinueLoadMaskDIB(pPause);
+
+ if (m_Status != 1)
+ return 0;
+
+ const ByteString& decoder = m_pStreamAcc->GetImageDecoder();
+ if (decoder == "JPXDecode")
+ return 0;
+
+ FXCODEC_STATUS iDecodeStatus;
+ CCodec_Jbig2Module* pJbig2Module = CPDF_ModuleMgr::Get()->GetJbig2Module();
+ if (!m_pJbig2Context) {
+ m_pJbig2Context = pdfium::MakeUnique<CCodec_Jbig2Context>();
+ if (m_pStreamAcc->GetImageParam()) {
+ CPDF_Stream* pGlobals =
+ m_pStreamAcc->GetImageParam()->GetStreamFor("JBIG2Globals");
+ if (pGlobals) {
+ m_pGlobalStream = pdfium::MakeRetain<CPDF_StreamAcc>(pGlobals);
+ m_pGlobalStream->LoadAllData(false);
}
- return ret1;
- }
- ret = pJbig2Module->ContinueDecode(m_pJbig2Context.get(), pPause);
- if (ret < 0) {
- m_pCachedBitmap.Reset();
- m_pGlobalStream.Reset();
- m_pJbig2Context.reset();
- 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;
+ iDecodeStatus = pJbig2Module->StartDecode(
+ m_pJbig2Context.get(), m_pDocument->CodecContext(), m_Width, m_Height,
+ m_pStreamAcc, m_pGlobalStream, m_pCachedBitmap->GetBuffer(),
+ m_pCachedBitmap->GetPitch(), pPause);
+ } else {
+ iDecodeStatus = pJbig2Module->ContinueDecode(m_pJbig2Context.get(), pPause);
}
- if (m_Status == 2) {
- return ContinueLoadMaskDIB(pPause);
+
+ if (iDecodeStatus < 0) {
+ m_pCachedBitmap.Reset();
+ m_pGlobalStream.Reset();
+ m_pJbig2Context.reset();
+ return 0;
}
- return 0;
+ if (iDecodeStatus == FXCODEC_STATUS_DECODE_TOBECONTINUE)
+ return 2;
+
+ int iContinueStatus = 1;
+ if (m_bHasMask) {
+ iContinueStatus = ContinueLoadMaskDIB(pPause);
+ m_Status = 2;
+ }
+ if (iContinueStatus == 2)
+ return 2;
+
+ if (m_pColorSpace && m_bStdCS)
+ m_pColorSpace->EnableStdConversion(false);
+ return iContinueStatus;
}
bool CPDF_DIBSource::LoadColorInfo(const CPDF_Dictionary* pFormResources,
@@ -740,14 +709,14 @@ int CPDF_DIBSource::ContinueLoadMaskDIB(IFX_PauseIndicator* pPause) {
int ret = m_pMask->ContinueLoadDIBSource(pPause);
if (ret == 2)
- return ret;
+ return 2;
if (m_pColorSpace && m_bStdCS)
m_pColorSpace->EnableStdConversion(false);
if (!ret) {
m_pMask.Reset();
- return ret;
+ return 0;
}
return 1;
}
diff --git a/core/fpdfapi/render/cpdf_dibsource.h b/core/fpdfapi/render/cpdf_dibsource.h
index dd7dd4fc02..0971eb3887 100644
--- a/core/fpdfapi/render/cpdf_dibsource.h
+++ b/core/fpdfapi/render/cpdf_dibsource.h
@@ -75,7 +75,7 @@ class CPDF_DIBSource : public CFX_DIBSource {
int StartLoadMask();
int StartLoadMaskDIB();
int ContinueLoadMaskDIB(IFX_PauseIndicator* pPause);
- int ContinueToLoadMask();
+ bool ContinueToLoadMask();
RetainPtr<CPDF_DIBSource> DetachMask();
private:
generated by cgit v1.2.3 (git 2.25.1) at 2024-12-01 03:02:24 +0000