void CPDF_StreamAcc::LoadAllData(const CPDF_Stream* pStream,
FX_BOOL bRawAccess,
FX_DWORD estimated_size,
FX_BOOL bImageAcc) {
if (!pStream)
return;
m_pStream = pStream;
if (pStream->IsMemoryBased() &&
(!pStream->GetDict()->KeyExist("Filter") || bRawAccess)) {
m_dwSize = pStream->m_dwSize;
m_pData = (uint8_t*)pStream->m_pDataBuf;
return;
}
uint8_t* pSrcData;
FX_DWORD dwSrcSize = pStream->m_dwSize;
if (dwSrcSize == 0)
return;
if (!pStream->IsMemoryBased()) {
pSrcData = m_pSrcData = FX_Alloc(uint8_t, dwSrcSize);
if (!pStream->ReadRawData(0, pSrcData, dwSrcSize))
return;
} else {
pSrcData = pStream->m_pDataBuf;
}
uint8_t* pDecryptedData = pSrcData;
FX_DWORD dwDecryptedSize = dwSrcSize;
if (!pStream->GetDict()->KeyExist("Filter") || bRawAccess) {
m_pData = pDecryptedData;
m_dwSize = dwDecryptedSize;
} else {
FX_BOOL bRet = PDF_DataDecode(
pDecryptedData, dwDecryptedSize, m_pStream->GetDict(), m_pData,
m_dwSize, m_ImageDecoder, m_pImageParam, estimated_size, bImageAcc);
if (!bRet) {
m_pData = pDecryptedData;
m_dwSize = dwDecryptedSize;
}
}
if (pSrcData != pStream->m_pDataBuf && pSrcData != m_pData) {
FX_Free(pSrcData);
}
if (pDecryptedData != pSrcData && pDecryptedData != m_pData) {
FX_Free(pDecryptedData);
}
m_pSrcData = NULL;
m_bNewBuf = m_pData != pStream->m_pDataBuf;
}
void CPDF_StreamAcc::LoadAllData(const CPDF_Stream* pStream,
bool bRawAccess,
uint32_t estimated_size,
bool bImageAcc) {
if (!pStream)
return;
m_pStream = pStream;
if (pStream->IsMemoryBased() && (!pStream->HasFilter() || bRawAccess)) {
m_dwSize = pStream->GetRawSize();
m_pData = pStream->GetRawData();
return;
}
uint32_t dwSrcSize = pStream->GetRawSize();
if (dwSrcSize == 0)
return;
uint8_t* pSrcData;
if (!pStream->IsMemoryBased()) {
pSrcData = m_pSrcData = FX_Alloc(uint8_t, dwSrcSize);
if (!pStream->ReadRawData(0, pSrcData, dwSrcSize))
return;
} else {
pSrcData = pStream->GetRawData();
}
if (!pStream->HasFilter() || bRawAccess) {
m_pData = pSrcData;
m_dwSize = dwSrcSize;
} else if (!PDF_DataDecode(pSrcData, dwSrcSize, m_pStream->GetDict(), m_pData,
m_dwSize, m_ImageDecoder, m_pImageParam,
estimated_size, bImageAcc)) {
m_pData = pSrcData;
m_dwSize = dwSrcSize;
}
if (pSrcData != pStream->GetRawData() && pSrcData != m_pData)
FX_Free(pSrcData);
m_pSrcData = nullptr;
m_bNewBuf = m_pData != pStream->GetRawData();
}
void CPDF_StreamAcc::LoadAllData(const CPDF_Stream* pStream, FX_BOOL bRawAccess, FX_DWORD estimated_size,
FX_BOOL bImageAcc)
{
if (pStream == NULL || pStream->GetType() != PDFOBJ_STREAM) {
return;
}
m_pStream = pStream;
if (pStream->IsMemoryBased() &&
(!pStream->GetDict()->KeyExist(FX_BSTRC("Filter")) || bRawAccess)) {
m_dwSize = pStream->m_dwSize;
m_pData = (FX_LPBYTE)pStream->m_pDataBuf;
return;
}
FX_LPBYTE pSrcData;
FX_DWORD dwSrcSize = pStream->m_dwSize;
if (dwSrcSize == 0) {
return;
}
if (!pStream->IsMemoryBased()) {
pSrcData = m_pSrcData = FX_Alloc(FX_BYTE, dwSrcSize);
if (!pSrcData || !pStream->ReadRawData(0, pSrcData, dwSrcSize)) {
return;
}
} else {
pSrcData = pStream->m_pDataBuf;
}
FX_LPBYTE pDecryptedData;
FX_DWORD dwDecryptedSize;
if (pStream->m_pCryptoHandler) {
CFX_BinaryBuf dest_buf;
dest_buf.EstimateSize(pStream->m_pCryptoHandler->DecryptGetSize(dwSrcSize));
FX_LPVOID context = pStream->m_pCryptoHandler->DecryptStart(pStream->GetObjNum(), pStream->m_GenNum);
pStream->m_pCryptoHandler->DecryptStream(context, pSrcData, dwSrcSize, dest_buf);
pStream->m_pCryptoHandler->DecryptFinish(context, dest_buf);
pDecryptedData = dest_buf.GetBuffer();
dwDecryptedSize = dest_buf.GetSize();
dest_buf.DetachBuffer();
} else {
pDecryptedData = pSrcData;
dwDecryptedSize = dwSrcSize;
}
if (!pStream->GetDict()->KeyExist(FX_BSTRC("Filter")) || bRawAccess) {
m_pData = pDecryptedData;
m_dwSize = dwDecryptedSize;
} else {
FX_BOOL bRet = PDF_DataDecode(pDecryptedData, dwDecryptedSize, m_pStream->GetDict(),
m_pData, m_dwSize, m_ImageDecoder, m_pImageParam, estimated_size, bImageAcc);
if (!bRet) {
m_pData = pDecryptedData;
m_dwSize = dwDecryptedSize;
}
}
if (pSrcData != pStream->m_pDataBuf && pSrcData != m_pData) {
FX_Free(pSrcData);
}
if (pDecryptedData != pSrcData && pDecryptedData != m_pData) {
FX_Free(pDecryptedData);
}
m_pSrcData = NULL;
m_bNewBuf = m_pData != pStream->m_pDataBuf;
}
