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Unified Diff: core/src/fpdfapi/fpdf_parser/fpdf_parser_filters.cpp

Issue 1265503005: clang-format all pdfium code. (Closed) Base URL: https://pdfium.googlesource.com/pdfium.git@master
Patch Set: sigh Created 5 years, 4 months ago
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Index: core/src/fpdfapi/fpdf_parser/fpdf_parser_filters.cpp
diff --git a/core/src/fpdfapi/fpdf_parser/fpdf_parser_filters.cpp b/core/src/fpdfapi/fpdf_parser/fpdf_parser_filters.cpp
index fed4546fab7efc93d50ea7d9806729d7a7a3cae0..8cb432029c9dad6f4fd59d2dddfd29419c52561f 100644
--- a/core/src/fpdfapi/fpdf_parser/fpdf_parser_filters.cpp
+++ b/core/src/fpdfapi/fpdf_parser/fpdf_parser_filters.cpp
@@ -12,888 +12,918 @@
extern "C" {
-static void* my_alloc_func(void* opaque, unsigned int items, unsigned int size)
-{
- return FX_Alloc2D(uint8_t, items, size);
+static void* my_alloc_func(void* opaque,
+ unsigned int items,
+ unsigned int size) {
+ return FX_Alloc2D(uint8_t, items, size);
}
-static void my_free_func(void* opaque, void* address)
-{
- FX_Free(address);
+static void my_free_func(void* opaque, void* address) {
+ FX_Free(address);
}
} // extern "C"
-CFX_DataFilter::CFX_DataFilter()
-{
- m_bEOF = FALSE;
- m_pDestFilter = NULL;
- m_SrcPos = 0;
-}
-CFX_DataFilter::~CFX_DataFilter()
-{
- delete m_pDestFilter;
-}
-void CFX_DataFilter::SetDestFilter(CFX_DataFilter* pFilter)
-{
- if (m_pDestFilter) {
- m_pDestFilter->SetDestFilter(pFilter);
- } else {
- m_pDestFilter = pFilter;
- }
-}
-void CFX_DataFilter::FilterIn(const uint8_t* src_buf, FX_DWORD src_size, CFX_BinaryBuf& dest_buf)
-{
- if (m_bEOF) {
- return;
- }
- m_SrcPos += src_size;
- if (m_pDestFilter) {
- CFX_BinaryBuf temp_buf;
- temp_buf.EstimateSize(FPDF_FILTER_BUFFER_SIZE, FPDF_FILTER_BUFFER_SIZE);
- v_FilterIn(src_buf, src_size, temp_buf);
- m_pDestFilter->FilterIn(temp_buf.GetBuffer(), temp_buf.GetSize(), dest_buf);
- } else {
- v_FilterIn(src_buf, src_size, dest_buf);
- }
-}
-void CFX_DataFilter::FilterFinish(CFX_BinaryBuf& dest_buf)
-{
- if (m_pDestFilter) {
- CFX_BinaryBuf temp_buf;
- v_FilterFinish(temp_buf);
- if (temp_buf.GetSize()) {
- m_pDestFilter->FilterIn(temp_buf.GetBuffer(), temp_buf.GetSize(), dest_buf);
- }
- m_pDestFilter->FilterFinish(dest_buf);
- } else {
- v_FilterFinish(dest_buf);
- }
- m_bEOF = TRUE;
-}
-void CFX_DataFilter::ReportEOF(FX_DWORD left_input)
-{
- if (m_bEOF) {
- return;
- }
- m_bEOF = TRUE;
- m_SrcPos -= left_input;
-}
-CFX_DataFilter* FPDF_CreateFilter(const CFX_ByteStringC& name, const CPDF_Dictionary* pParam, int width, int height)
-{
- FX_DWORD id = name.GetID();
- switch (id) {
- case FXBSTR_ID('F', 'l', 'a', 't'):
- case FXBSTR_ID('F', 'l', 0, 0):
- case FXBSTR_ID('L', 'Z', 'W', 'D'):
- case FXBSTR_ID('L', 'Z', 'W', 0): {
- CFX_DataFilter* pFilter;
- if (id == FXBSTR_ID('L', 'Z', 'W', 'D') || id == FXBSTR_ID('L', 'Z', 'W', 0)) {
- pFilter = new CPDF_LzwFilter(pParam ? pParam->GetInteger("EarlyChange", 1) : 1);
- } else {
- pFilter = new CPDF_FlateFilter;
- }
- if ((pParam ? pParam->GetInteger("Predictor", 1) : 1) > 1) {
- CFX_DataFilter* pPredictor = new CPDF_PredictorFilter(pParam->GetInteger(FX_BSTRC("Predictor"), 1),
- pParam->GetInteger(FX_BSTRC("Colors"), 1), pParam->GetInteger(FX_BSTRC("BitsPerComponent"), 8),
- pParam->GetInteger(FX_BSTRC("Columns"), 1));
- pFilter->SetDestFilter(pPredictor);
- }
- return pFilter;
- }
- case FXBSTR_ID('A', 'S', 'C', 'I'):
- if (name == "ASCIIHexDecode") {
- return new CPDF_AsciiHexFilter;
- }
- return new CPDF_Ascii85Filter;
- case FXBSTR_ID('A', 'H', 'x', 0):
- return new CPDF_AsciiHexFilter;
- case FXBSTR_ID('A', '8', '5', 0):
- return new CPDF_Ascii85Filter;
- case FXBSTR_ID('R', 'u', 'n', 'L'):
- return new CPDF_RunLenFilter;
- case FXBSTR_ID('C', 'C', 'I', 'T'): {
- int Encoding = 0;
- int bEndOfLine = FALSE;
- int bByteAlign = FALSE;
- int bBlack = FALSE;
- int nRows = 0;
- int nColumns = 1728;
- if (pParam) {
- Encoding = pParam->GetInteger(FX_BSTRC("K"));
- bEndOfLine = pParam->GetInteger(FX_BSTRC("EndOfLine"));
- bByteAlign = pParam->GetInteger(FX_BSTRC("EncodedByteAlign"));
- bBlack = pParam->GetInteger(FX_BSTRC("BlackIs1"));
- nColumns = pParam->GetInteger(FX_BSTRC("Columns"), 1728);
- nRows = pParam->GetInteger(FX_BSTRC("Rows"));
- }
- if (nColumns == 0) {
- nColumns = width;
- }
- if (nRows == 0) {
- nRows = height;
- }
- CPDF_FaxFilter* pFilter = new CPDF_FaxFilter();
- pFilter->Initialize(Encoding, bEndOfLine, bByteAlign, bBlack, nRows, nColumns);
- return pFilter;
- }
- case FXBSTR_ID('D', 'C', 'T', 'D'):
- return new CPDF_JpegFilter;
- default:
- return NULL;
- }
-}
-CFX_DataFilter* _FPDF_CreateFilterFromDict(CPDF_Dictionary* pDict)
-{
- CPDF_Object* pDecoder = pDict->GetElementValue("Filter");
- if (pDecoder == NULL) {
- return NULL;
- }
- CFX_DataFilter* pFirstFilter = NULL;
- int width = pDict->GetInteger(FX_BSTRC("Width")), height = pDict->GetInteger(FX_BSTRC("Height"));
- CPDF_Object* pParams = pDict->GetElementValue("DecodeParms");
- if (pDecoder->GetType() == PDFOBJ_ARRAY) {
- if (pParams && pParams->GetType() != PDFOBJ_ARRAY) {
- pParams = NULL;
- }
- for (FX_DWORD i = 0; i < ((CPDF_Array*)pDecoder)->GetCount(); i ++) {
- CFX_ByteString name = ((CPDF_Array*)pDecoder)->GetString(i);
- CPDF_Dictionary* pParam = NULL;
- if (pParams) {
- pParam = ((CPDF_Array*)pParams)->GetDict(i);
- }
- CFX_DataFilter* pDestFilter = FPDF_CreateFilter(name, pParam, width, height);
- if (pDestFilter) {
- if (pFirstFilter == NULL) {
- pFirstFilter = pDestFilter;
- } else {
- pFirstFilter->SetDestFilter(pDestFilter);
- }
- }
- }
- } else {
- if (pParams && pParams->GetType() != PDFOBJ_DICTIONARY) {
- pParams = NULL;
- }
- pFirstFilter = FPDF_CreateFilter(pDecoder->GetString(), (CPDF_Dictionary*)pParams, width, height);
- }
- return pFirstFilter;
-}
-CPDF_StreamFilter* CPDF_Stream::GetStreamFilter(FX_BOOL bRaw) const
-{
- CFX_DataFilter* pFirstFilter = NULL;
- if (m_pCryptoHandler) {
- pFirstFilter = new CPDF_DecryptFilter(m_pCryptoHandler, m_ObjNum, m_GenNum);
- }
- if (!bRaw) {
- CFX_DataFilter* pFilter = _FPDF_CreateFilterFromDict(m_pDict);
- if (pFilter) {
- if (pFirstFilter == NULL) {
- pFirstFilter = pFilter;
- } else {
- pFirstFilter->SetDestFilter(pFilter);
- }
- }
- }
- CPDF_StreamFilter* pStreamFilter = new CPDF_StreamFilter;
- pStreamFilter->m_pStream = this;
- pStreamFilter->m_pFilter = pFirstFilter;
- pStreamFilter->m_pBuffer = NULL;
- pStreamFilter->m_SrcOffset = 0;
- return pStreamFilter;
-}
-CPDF_StreamFilter::~CPDF_StreamFilter()
-{
- delete m_pFilter;
- delete m_pBuffer;
-}
-#define FPDF_FILTER_BUFFER_IN_SIZE FPDF_FILTER_BUFFER_SIZE
-FX_DWORD CPDF_StreamFilter::ReadBlock(uint8_t* buffer, FX_DWORD buf_size)
-{
- if (m_pFilter == NULL) {
- FX_DWORD read_size = m_pStream->GetRawSize() - m_SrcOffset;
- if (read_size == 0) {
- return 0;
- }
- if (read_size > buf_size) {
- read_size = buf_size;
- }
- m_pStream->ReadRawData(m_SrcOffset, buffer, read_size);
- m_SrcOffset += read_size;
- return read_size;
- }
- FX_DWORD read_size = 0;
- if (m_pBuffer) {
- read_size = ReadLeftOver(buffer, buf_size);
- if (read_size == buf_size) {
- return read_size;
- }
- buffer += read_size;
- buf_size -= read_size;
- }
- ASSERT(m_pBuffer == NULL);
- if (m_pFilter->IsEOF()) {
- return read_size;
- }
- m_pBuffer = new CFX_BinaryBuf;
- m_pBuffer->EstimateSize(FPDF_FILTER_BUFFER_SIZE, FPDF_FILTER_BUFFER_SIZE);
- m_BufOffset = 0;
- while (1) {
- int src_size = m_pStream->GetRawSize() - m_SrcOffset;
- if (src_size == 0) {
- m_pFilter->FilterFinish(*m_pBuffer);
- break;
- }
- if (src_size > FPDF_FILTER_BUFFER_IN_SIZE) {
- src_size = FPDF_FILTER_BUFFER_IN_SIZE;
- }
- if (!m_pStream->ReadRawData(m_SrcOffset, m_SrcBuffer, src_size)) {
- return 0;
- }
- m_SrcOffset += src_size;
- m_pFilter->FilterIn(m_SrcBuffer, src_size, *m_pBuffer);
- if (m_pBuffer->GetSize() >= (int)buf_size) {
- break;
- }
+CFX_DataFilter::CFX_DataFilter() {
+ m_bEOF = FALSE;
+ m_pDestFilter = NULL;
+ m_SrcPos = 0;
+}
+CFX_DataFilter::~CFX_DataFilter() {
+ delete m_pDestFilter;
+}
+void CFX_DataFilter::SetDestFilter(CFX_DataFilter* pFilter) {
+ if (m_pDestFilter) {
+ m_pDestFilter->SetDestFilter(pFilter);
+ } else {
+ m_pDestFilter = pFilter;
+ }
+}
+void CFX_DataFilter::FilterIn(const uint8_t* src_buf,
+ FX_DWORD src_size,
+ CFX_BinaryBuf& dest_buf) {
+ if (m_bEOF) {
+ return;
+ }
+ m_SrcPos += src_size;
+ if (m_pDestFilter) {
+ CFX_BinaryBuf temp_buf;
+ temp_buf.EstimateSize(FPDF_FILTER_BUFFER_SIZE, FPDF_FILTER_BUFFER_SIZE);
+ v_FilterIn(src_buf, src_size, temp_buf);
+ m_pDestFilter->FilterIn(temp_buf.GetBuffer(), temp_buf.GetSize(), dest_buf);
+ } else {
+ v_FilterIn(src_buf, src_size, dest_buf);
+ }
+}
+void CFX_DataFilter::FilterFinish(CFX_BinaryBuf& dest_buf) {
+ if (m_pDestFilter) {
+ CFX_BinaryBuf temp_buf;
+ v_FilterFinish(temp_buf);
+ if (temp_buf.GetSize()) {
+ m_pDestFilter->FilterIn(temp_buf.GetBuffer(), temp_buf.GetSize(),
+ dest_buf);
+ }
+ m_pDestFilter->FilterFinish(dest_buf);
+ } else {
+ v_FilterFinish(dest_buf);
+ }
+ m_bEOF = TRUE;
+}
+void CFX_DataFilter::ReportEOF(FX_DWORD left_input) {
+ if (m_bEOF) {
+ return;
+ }
+ m_bEOF = TRUE;
+ m_SrcPos -= left_input;
+}
+CFX_DataFilter* FPDF_CreateFilter(const CFX_ByteStringC& name,
+ const CPDF_Dictionary* pParam,
+ int width,
+ int height) {
+ FX_DWORD id = name.GetID();
+ switch (id) {
+ case FXBSTR_ID('F', 'l', 'a', 't'):
+ case FXBSTR_ID('F', 'l', 0, 0):
+ case FXBSTR_ID('L', 'Z', 'W', 'D'):
+ case FXBSTR_ID('L', 'Z', 'W', 0): {
+ CFX_DataFilter* pFilter;
+ if (id == FXBSTR_ID('L', 'Z', 'W', 'D') ||
+ id == FXBSTR_ID('L', 'Z', 'W', 0)) {
+ pFilter = new CPDF_LzwFilter(
+ pParam ? pParam->GetInteger("EarlyChange", 1) : 1);
+ } else {
+ pFilter = new CPDF_FlateFilter;
+ }
+ if ((pParam ? pParam->GetInteger("Predictor", 1) : 1) > 1) {
+ CFX_DataFilter* pPredictor = new CPDF_PredictorFilter(
+ pParam->GetInteger(FX_BSTRC("Predictor"), 1),
+ pParam->GetInteger(FX_BSTRC("Colors"), 1),
+ pParam->GetInteger(FX_BSTRC("BitsPerComponent"), 8),
+ pParam->GetInteger(FX_BSTRC("Columns"), 1));
+ pFilter->SetDestFilter(pPredictor);
+ }
+ return pFilter;
+ }
+ case FXBSTR_ID('A', 'S', 'C', 'I'):
+ if (name == "ASCIIHexDecode") {
+ return new CPDF_AsciiHexFilter;
+ }
+ return new CPDF_Ascii85Filter;
+ case FXBSTR_ID('A', 'H', 'x', 0):
+ return new CPDF_AsciiHexFilter;
+ case FXBSTR_ID('A', '8', '5', 0):
+ return new CPDF_Ascii85Filter;
+ case FXBSTR_ID('R', 'u', 'n', 'L'):
+ return new CPDF_RunLenFilter;
+ case FXBSTR_ID('C', 'C', 'I', 'T'): {
+ int Encoding = 0;
+ int bEndOfLine = FALSE;
+ int bByteAlign = FALSE;
+ int bBlack = FALSE;
+ int nRows = 0;
+ int nColumns = 1728;
+ if (pParam) {
+ Encoding = pParam->GetInteger(FX_BSTRC("K"));
+ bEndOfLine = pParam->GetInteger(FX_BSTRC("EndOfLine"));
+ bByteAlign = pParam->GetInteger(FX_BSTRC("EncodedByteAlign"));
+ bBlack = pParam->GetInteger(FX_BSTRC("BlackIs1"));
+ nColumns = pParam->GetInteger(FX_BSTRC("Columns"), 1728);
+ nRows = pParam->GetInteger(FX_BSTRC("Rows"));
+ }
+ if (nColumns == 0) {
+ nColumns = width;
+ }
+ if (nRows == 0) {
+ nRows = height;
+ }
+ CPDF_FaxFilter* pFilter = new CPDF_FaxFilter();
+ pFilter->Initialize(Encoding, bEndOfLine, bByteAlign, bBlack, nRows,
+ nColumns);
+ return pFilter;
+ }
+ case FXBSTR_ID('D', 'C', 'T', 'D'):
+ return new CPDF_JpegFilter;
+ default:
+ return NULL;
+ }
+}
+CFX_DataFilter* _FPDF_CreateFilterFromDict(CPDF_Dictionary* pDict) {
+ CPDF_Object* pDecoder = pDict->GetElementValue("Filter");
+ if (pDecoder == NULL) {
+ return NULL;
+ }
+ CFX_DataFilter* pFirstFilter = NULL;
+ int width = pDict->GetInteger(FX_BSTRC("Width")),
+ height = pDict->GetInteger(FX_BSTRC("Height"));
+ CPDF_Object* pParams = pDict->GetElementValue("DecodeParms");
+ if (pDecoder->GetType() == PDFOBJ_ARRAY) {
+ if (pParams && pParams->GetType() != PDFOBJ_ARRAY) {
+ pParams = NULL;
+ }
+ for (FX_DWORD i = 0; i < ((CPDF_Array*)pDecoder)->GetCount(); i++) {
+ CFX_ByteString name = ((CPDF_Array*)pDecoder)->GetString(i);
+ CPDF_Dictionary* pParam = NULL;
+ if (pParams) {
+ pParam = ((CPDF_Array*)pParams)->GetDict(i);
+ }
+ CFX_DataFilter* pDestFilter =
+ FPDF_CreateFilter(name, pParam, width, height);
+ if (pDestFilter) {
+ if (pFirstFilter == NULL) {
+ pFirstFilter = pDestFilter;
+ } else {
+ pFirstFilter->SetDestFilter(pDestFilter);
+ }
+ }
+ }
+ } else {
+ if (pParams && pParams->GetType() != PDFOBJ_DICTIONARY) {
+ pParams = NULL;
+ }
+ pFirstFilter = FPDF_CreateFilter(pDecoder->GetString(),
+ (CPDF_Dictionary*)pParams, width, height);
+ }
+ return pFirstFilter;
+}
+CPDF_StreamFilter* CPDF_Stream::GetStreamFilter(FX_BOOL bRaw) const {
+ CFX_DataFilter* pFirstFilter = NULL;
+ if (m_pCryptoHandler) {
+ pFirstFilter = new CPDF_DecryptFilter(m_pCryptoHandler, m_ObjNum, m_GenNum);
+ }
+ if (!bRaw) {
+ CFX_DataFilter* pFilter = _FPDF_CreateFilterFromDict(m_pDict);
+ if (pFilter) {
+ if (pFirstFilter == NULL) {
+ pFirstFilter = pFilter;
+ } else {
+ pFirstFilter->SetDestFilter(pFilter);
+ }
+ }
+ }
+ CPDF_StreamFilter* pStreamFilter = new CPDF_StreamFilter;
+ pStreamFilter->m_pStream = this;
+ pStreamFilter->m_pFilter = pFirstFilter;
+ pStreamFilter->m_pBuffer = NULL;
+ pStreamFilter->m_SrcOffset = 0;
+ return pStreamFilter;
+}
+CPDF_StreamFilter::~CPDF_StreamFilter() {
+ delete m_pFilter;
+ delete m_pBuffer;
+}
+#define FPDF_FILTER_BUFFER_IN_SIZE FPDF_FILTER_BUFFER_SIZE
+FX_DWORD CPDF_StreamFilter::ReadBlock(uint8_t* buffer, FX_DWORD buf_size) {
+ if (m_pFilter == NULL) {
+ FX_DWORD read_size = m_pStream->GetRawSize() - m_SrcOffset;
+ if (read_size == 0) {
+ return 0;
}
- return read_size + ReadLeftOver(buffer, buf_size);
-}
-FX_DWORD CPDF_StreamFilter::ReadLeftOver(uint8_t* buffer, FX_DWORD buf_size)
-{
- FX_DWORD read_size = m_pBuffer->GetSize() - m_BufOffset;
if (read_size > buf_size) {
- read_size = buf_size;
- }
- FXSYS_memcpy(buffer, m_pBuffer->GetBuffer() + m_BufOffset, read_size);
- m_BufOffset += read_size;
- if (m_BufOffset == (FX_DWORD)m_pBuffer->GetSize()) {
- delete m_pBuffer;
- m_pBuffer = NULL;
+ read_size = buf_size;
}
+ m_pStream->ReadRawData(m_SrcOffset, buffer, read_size);
+ m_SrcOffset += read_size;
return read_size;
-}
-CPDF_DecryptFilter::CPDF_DecryptFilter(CPDF_CryptoHandler* pCryptoHandler, FX_DWORD objnum, FX_DWORD gennum)
-{
- m_pCryptoHandler = pCryptoHandler;
- m_pContext = NULL;
- m_ObjNum = objnum;
- m_GenNum = gennum;
-}
-CPDF_DecryptFilter::~CPDF_DecryptFilter()
-{
- CFX_BinaryBuf buf;
- if (m_pContext) {
- m_pCryptoHandler->DecryptFinish(m_pContext, buf);
- }
-}
-void CPDF_DecryptFilter::v_FilterIn(const uint8_t* src_buf, FX_DWORD src_size, CFX_BinaryBuf& dest_buf)
-{
- if (m_pContext == NULL) {
- m_pContext = m_pCryptoHandler->DecryptStart(m_ObjNum, m_GenNum);
- }
- m_pCryptoHandler->DecryptStream(m_pContext, src_buf, src_size, dest_buf);
-}
-void CPDF_DecryptFilter::v_FilterFinish(CFX_BinaryBuf& dest_buf)
-{
- m_bEOF = TRUE;
- if (m_pContext == NULL) {
+ }
+ FX_DWORD read_size = 0;
+ if (m_pBuffer) {
+ read_size = ReadLeftOver(buffer, buf_size);
+ if (read_size == buf_size) {
+ return read_size;
+ }
+ buffer += read_size;
+ buf_size -= read_size;
+ }
+ ASSERT(m_pBuffer == NULL);
+ if (m_pFilter->IsEOF()) {
+ return read_size;
+ }
+ m_pBuffer = new CFX_BinaryBuf;
+ m_pBuffer->EstimateSize(FPDF_FILTER_BUFFER_SIZE, FPDF_FILTER_BUFFER_SIZE);
+ m_BufOffset = 0;
+ while (1) {
+ int src_size = m_pStream->GetRawSize() - m_SrcOffset;
+ if (src_size == 0) {
+ m_pFilter->FilterFinish(*m_pBuffer);
+ break;
+ }
+ if (src_size > FPDF_FILTER_BUFFER_IN_SIZE) {
+ src_size = FPDF_FILTER_BUFFER_IN_SIZE;
+ }
+ if (!m_pStream->ReadRawData(m_SrcOffset, m_SrcBuffer, src_size)) {
+ return 0;
+ }
+ m_SrcOffset += src_size;
+ m_pFilter->FilterIn(m_SrcBuffer, src_size, *m_pBuffer);
+ if (m_pBuffer->GetSize() >= (int)buf_size) {
+ break;
+ }
+ }
+ return read_size + ReadLeftOver(buffer, buf_size);
+}
+FX_DWORD CPDF_StreamFilter::ReadLeftOver(uint8_t* buffer, FX_DWORD buf_size) {
+ FX_DWORD read_size = m_pBuffer->GetSize() - m_BufOffset;
+ if (read_size > buf_size) {
+ read_size = buf_size;
+ }
+ FXSYS_memcpy(buffer, m_pBuffer->GetBuffer() + m_BufOffset, read_size);
+ m_BufOffset += read_size;
+ if (m_BufOffset == (FX_DWORD)m_pBuffer->GetSize()) {
+ delete m_pBuffer;
+ m_pBuffer = NULL;
+ }
+ return read_size;
+}
+CPDF_DecryptFilter::CPDF_DecryptFilter(CPDF_CryptoHandler* pCryptoHandler,
+ FX_DWORD objnum,
+ FX_DWORD gennum) {
+ m_pCryptoHandler = pCryptoHandler;
+ m_pContext = NULL;
+ m_ObjNum = objnum;
+ m_GenNum = gennum;
+}
+CPDF_DecryptFilter::~CPDF_DecryptFilter() {
+ CFX_BinaryBuf buf;
+ if (m_pContext) {
+ m_pCryptoHandler->DecryptFinish(m_pContext, buf);
+ }
+}
+void CPDF_DecryptFilter::v_FilterIn(const uint8_t* src_buf,
+ FX_DWORD src_size,
+ CFX_BinaryBuf& dest_buf) {
+ if (m_pContext == NULL) {
+ m_pContext = m_pCryptoHandler->DecryptStart(m_ObjNum, m_GenNum);
+ }
+ m_pCryptoHandler->DecryptStream(m_pContext, src_buf, src_size, dest_buf);
+}
+void CPDF_DecryptFilter::v_FilterFinish(CFX_BinaryBuf& dest_buf) {
+ m_bEOF = TRUE;
+ if (m_pContext == NULL) {
+ return;
+ }
+ m_pCryptoHandler->DecryptFinish(m_pContext, dest_buf);
+ m_pContext = NULL;
+}
+CPDF_FlateFilter::CPDF_FlateFilter() {
+ m_pContext = NULL;
+}
+CPDF_FlateFilter::~CPDF_FlateFilter() {
+ if (m_pContext) {
+ FPDFAPI_FlateEnd(m_pContext);
+ }
+}
+void CPDF_FlateFilter::v_FilterIn(const uint8_t* src_buf,
+ FX_DWORD src_size,
+ CFX_BinaryBuf& dest_buf) {
+ if (m_pContext == NULL) {
+ m_pContext = FPDFAPI_FlateInit(my_alloc_func, my_free_func);
+ }
+ FPDFAPI_FlateInput(m_pContext, src_buf, src_size);
+ while (1) {
+ int ret =
+ FPDFAPI_FlateOutput(m_pContext, m_DestBuffer, FPDF_FILTER_BUFFER_SIZE);
+ int out_size =
+ FPDF_FILTER_BUFFER_SIZE - FPDFAPI_FlateGetAvailOut(m_pContext);
+ dest_buf.AppendBlock(m_DestBuffer, out_size);
+ if (ret == Z_BUF_ERROR) {
+ break;
+ }
+ if (ret != Z_OK) {
+ ReportEOF(FPDFAPI_FlateGetAvailIn(m_pContext));
+ break;
+ }
+ }
+}
+CPDF_LzwFilter::CPDF_LzwFilter(FX_BOOL bEarlyChange) {
+ m_bEarlyChange = bEarlyChange ? 1 : 0;
+ m_CodeLen = 9;
+ m_nCodes = 0;
+ m_nLeftBits = 0;
+ m_LeftBits = 0;
+ m_OldCode = (FX_DWORD)-1;
+}
+void CPDF_LzwFilter::v_FilterIn(const uint8_t* src_buf,
+ FX_DWORD src_size,
+ CFX_BinaryBuf& dest_buf) {
+ for (FX_DWORD i = 0; i < src_size; i++) {
+ if (m_nLeftBits + 8 < m_CodeLen) {
+ m_nLeftBits += 8;
+ m_LeftBits = (m_LeftBits << 8) | src_buf[i];
+ continue;
+ }
+ FX_DWORD new_bits = m_CodeLen - m_nLeftBits;
+ FX_DWORD code = (m_LeftBits << new_bits) | (src_buf[i] >> (8 - new_bits));
+ m_nLeftBits = 8 - new_bits;
+ m_LeftBits = src_buf[i] % (1 << m_nLeftBits);
+ if (code < 256) {
+ dest_buf.AppendByte((uint8_t)code);
+ m_LastChar = (uint8_t)code;
+ if (m_OldCode != -1) {
+ AddCode(m_OldCode, m_LastChar);
+ }
+ m_OldCode = code;
+ } else if (code == 256) {
+ m_CodeLen = 9;
+ m_nCodes = 0;
+ m_OldCode = (FX_DWORD)-1;
+ } else if (code == 257) {
+ ReportEOF(src_size - i - 1);
+ return;
+ } else {
+ if (m_OldCode == -1) {
+ ReportEOF(src_size - i - 1);
return;
- }
- m_pCryptoHandler->DecryptFinish(m_pContext, dest_buf);
- m_pContext = NULL;
-}
-CPDF_FlateFilter::CPDF_FlateFilter()
-{
- m_pContext = NULL;
-}
-CPDF_FlateFilter::~CPDF_FlateFilter()
-{
- if (m_pContext) {
- FPDFAPI_FlateEnd(m_pContext);
- }
-}
-void CPDF_FlateFilter::v_FilterIn(const uint8_t* src_buf, FX_DWORD src_size, CFX_BinaryBuf& dest_buf)
-{
- if (m_pContext == NULL) {
- m_pContext = FPDFAPI_FlateInit(my_alloc_func, my_free_func);
- }
- FPDFAPI_FlateInput(m_pContext, src_buf, src_size);
- while (1) {
- int ret = FPDFAPI_FlateOutput(m_pContext, m_DestBuffer, FPDF_FILTER_BUFFER_SIZE);
- int out_size = FPDF_FILTER_BUFFER_SIZE - FPDFAPI_FlateGetAvailOut(m_pContext);
- dest_buf.AppendBlock(m_DestBuffer, out_size);
- if (ret == Z_BUF_ERROR) {
- break;
- }
- if (ret != Z_OK) {
- ReportEOF(FPDFAPI_FlateGetAvailIn(m_pContext));
- break;
- }
- }
-}
-CPDF_LzwFilter::CPDF_LzwFilter(FX_BOOL bEarlyChange)
-{
- m_bEarlyChange = bEarlyChange ? 1 : 0;
- m_CodeLen = 9;
- m_nCodes = 0;
- m_nLeftBits = 0;
- m_LeftBits = 0;
- m_OldCode = (FX_DWORD) - 1;
-}
-void CPDF_LzwFilter::v_FilterIn(const uint8_t* src_buf, FX_DWORD src_size, CFX_BinaryBuf& dest_buf)
-{
- for (FX_DWORD i = 0; i < src_size; i ++) {
- if (m_nLeftBits + 8 < m_CodeLen) {
- m_nLeftBits += 8;
- m_LeftBits = (m_LeftBits << 8) | src_buf[i];
- continue;
- }
- FX_DWORD new_bits = m_CodeLen - m_nLeftBits;
- FX_DWORD code = (m_LeftBits << new_bits) | (src_buf[i] >> (8 - new_bits));
- m_nLeftBits = 8 - new_bits;
- m_LeftBits = src_buf[i] % (1 << m_nLeftBits);
- if (code < 256) {
- dest_buf.AppendByte((uint8_t)code);
- m_LastChar = (uint8_t)code;
- if (m_OldCode != -1) {
- AddCode(m_OldCode, m_LastChar);
- }
- m_OldCode = code;
- } else if (code == 256) {
- m_CodeLen = 9;
- m_nCodes = 0;
- m_OldCode = (FX_DWORD) - 1;
- } else if (code == 257) {
- ReportEOF(src_size - i - 1);
- return;
- } else {
- if (m_OldCode == -1) {
- ReportEOF(src_size - i - 1);
- return;
- }
- m_StackLen = 0;
- if (code >= m_nCodes + 258) {
- if (m_StackLen < sizeof(m_DecodeStack)) {
- m_DecodeStack[m_StackLen++] = m_LastChar;
- }
- DecodeString(m_OldCode);
- } else {
- DecodeString(code);
- }
- dest_buf.AppendBlock(NULL, m_StackLen);
- uint8_t* pOutput = dest_buf.GetBuffer() + dest_buf.GetSize() - m_StackLen;
- for (FX_DWORD cc = 0; cc < m_StackLen; cc ++) {
- pOutput[cc] = m_DecodeStack[m_StackLen - cc - 1];
- }
- m_LastChar = m_DecodeStack[m_StackLen - 1];
- if (m_OldCode < 256) {
- AddCode(m_OldCode, m_LastChar);
- } else if (m_OldCode - 258 >= m_nCodes) {
- ReportEOF(src_size - i - 1);
- return;
- } else {
- AddCode(m_OldCode, m_LastChar);
- }
- m_OldCode = code;
- }
- }
-}
-void CPDF_LzwFilter::AddCode(FX_DWORD prefix_code, uint8_t append_char)
-{
- if (m_nCodes + m_bEarlyChange == 4094) {
+ }
+ m_StackLen = 0;
+ if (code >= m_nCodes + 258) {
+ if (m_StackLen < sizeof(m_DecodeStack)) {
+ m_DecodeStack[m_StackLen++] = m_LastChar;
+ }
+ DecodeString(m_OldCode);
+ } else {
+ DecodeString(code);
+ }
+ dest_buf.AppendBlock(NULL, m_StackLen);
+ uint8_t* pOutput = dest_buf.GetBuffer() + dest_buf.GetSize() - m_StackLen;
+ for (FX_DWORD cc = 0; cc < m_StackLen; cc++) {
+ pOutput[cc] = m_DecodeStack[m_StackLen - cc - 1];
+ }
+ m_LastChar = m_DecodeStack[m_StackLen - 1];
+ if (m_OldCode < 256) {
+ AddCode(m_OldCode, m_LastChar);
+ } else if (m_OldCode - 258 >= m_nCodes) {
+ ReportEOF(src_size - i - 1);
return;
- }
- m_CodeArray[m_nCodes ++] = (prefix_code << 16) | append_char;
- if (m_nCodes + m_bEarlyChange == 512 - 258) {
- m_CodeLen = 10;
- } else if (m_nCodes + m_bEarlyChange == 1024 - 258) {
- m_CodeLen = 11;
- } else if (m_nCodes + m_bEarlyChange == 2048 - 258) {
- m_CodeLen = 12;
- }
-}
-void CPDF_LzwFilter::DecodeString(FX_DWORD code)
-{
- while (1) {
- int index = code - 258;
- if (index < 0 || index >= (int)m_nCodes) {
- break;
- }
- FX_DWORD data = m_CodeArray[index];
- if (m_StackLen >= sizeof(m_DecodeStack)) {
- return;
- }
- m_DecodeStack[m_StackLen++] = (uint8_t)data;
- code = data >> 16;
- }
+ } else {
+ AddCode(m_OldCode, m_LastChar);
+ }
+ m_OldCode = code;
+ }
+ }
+}
+void CPDF_LzwFilter::AddCode(FX_DWORD prefix_code, uint8_t append_char) {
+ if (m_nCodes + m_bEarlyChange == 4094) {
+ return;
+ }
+ m_CodeArray[m_nCodes++] = (prefix_code << 16) | append_char;
+ if (m_nCodes + m_bEarlyChange == 512 - 258) {
+ m_CodeLen = 10;
+ } else if (m_nCodes + m_bEarlyChange == 1024 - 258) {
+ m_CodeLen = 11;
+ } else if (m_nCodes + m_bEarlyChange == 2048 - 258) {
+ m_CodeLen = 12;
+ }
+}
+void CPDF_LzwFilter::DecodeString(FX_DWORD code) {
+ while (1) {
+ int index = code - 258;
+ if (index < 0 || index >= (int)m_nCodes) {
+ break;
+ }
+ FX_DWORD data = m_CodeArray[index];
if (m_StackLen >= sizeof(m_DecodeStack)) {
- return;
- }
- m_DecodeStack[m_StackLen++] = (uint8_t)code;
-}
-CPDF_PredictorFilter::CPDF_PredictorFilter(int predictor, int colors, int bpc, int cols)
-{
- m_bTiff = predictor < 10;
- m_pRefLine = NULL;
- m_pCurLine = NULL;
- m_iLine = 0;
- m_LineInSize = 0;
- m_Bpp = (colors * bpc + 7) / 8;
- m_Pitch = (colors * bpc * cols + 7) / 8;
+ return;
+ }
+ m_DecodeStack[m_StackLen++] = (uint8_t)data;
+ code = data >> 16;
+ }
+ if (m_StackLen >= sizeof(m_DecodeStack)) {
+ return;
+ }
+ m_DecodeStack[m_StackLen++] = (uint8_t)code;
+}
+CPDF_PredictorFilter::CPDF_PredictorFilter(int predictor,
+ int colors,
+ int bpc,
+ int cols) {
+ m_bTiff = predictor < 10;
+ m_pRefLine = NULL;
+ m_pCurLine = NULL;
+ m_iLine = 0;
+ m_LineInSize = 0;
+ m_Bpp = (colors * bpc + 7) / 8;
+ m_Pitch = (colors * bpc * cols + 7) / 8;
+ if (!m_bTiff) {
+ m_Pitch++;
+ }
+}
+CPDF_PredictorFilter::~CPDF_PredictorFilter() {
+ if (m_pCurLine) {
+ FX_Free(m_pCurLine);
+ }
+ if (m_pRefLine) {
+ FX_Free(m_pRefLine);
+ }
+}
+static uint8_t PaethPredictor(int a, int b, int c) {
+ int p = a + b - c;
+ int pa = FXSYS_abs(p - a);
+ int pb = FXSYS_abs(p - b);
+ int pc = FXSYS_abs(p - c);
+ if (pa <= pb && pa <= pc) {
+ return (uint8_t)a;
+ }
+ if (pb <= pc) {
+ return (uint8_t)b;
+ }
+ return (uint8_t)c;
+}
+static void PNG_PredictorLine(uint8_t* cur_buf,
+ uint8_t* ref_buf,
+ int pitch,
+ int Bpp) {
+ uint8_t tag = cur_buf[0];
+ if (tag == 0) {
+ return;
+ }
+ cur_buf++;
+ if (ref_buf) {
+ ref_buf++;
+ }
+ for (int byte = 0; byte < pitch; byte++) {
+ uint8_t raw_byte = cur_buf[byte];
+ switch (tag) {
+ case 1: {
+ uint8_t left = 0;
+ if (byte >= Bpp) {
+ left = cur_buf[byte - Bpp];
+ }
+ cur_buf[byte] = raw_byte + left;
+ break;
+ }
+ case 2: {
+ uint8_t up = 0;
+ if (ref_buf) {
+ up = ref_buf[byte];
+ }
+ cur_buf[byte] = raw_byte + up;
+ break;
+ }
+ case 3: {
+ uint8_t left = 0;
+ if (byte >= Bpp) {
+ left = cur_buf[byte - Bpp];
+ }
+ uint8_t up = 0;
+ if (ref_buf) {
+ up = ref_buf[byte];
+ }
+ cur_buf[byte] = raw_byte + (up + left) / 2;
+ break;
+ }
+ case 4: {
+ uint8_t left = 0;
+ if (byte >= Bpp) {
+ left = cur_buf[byte - Bpp];
+ }
+ uint8_t up = 0;
+ if (ref_buf) {
+ up = ref_buf[byte];
+ }
+ uint8_t upper_left = 0;
+ if (byte >= Bpp && ref_buf) {
+ upper_left = ref_buf[byte - Bpp];
+ }
+ cur_buf[byte] = raw_byte + PaethPredictor(left, up, upper_left);
+ break;
+ }
+ }
+ }
+}
+void CPDF_PredictorFilter::v_FilterIn(const uint8_t* src_buf,
+ FX_DWORD src_size,
+ CFX_BinaryBuf& dest_buf) {
+ if (m_pCurLine == NULL) {
+ m_pCurLine = FX_Alloc(uint8_t, m_Pitch);
if (!m_bTiff) {
- m_Pitch ++;
- }
-}
-CPDF_PredictorFilter::~CPDF_PredictorFilter()
-{
- if (m_pCurLine) {
- FX_Free(m_pCurLine);
- }
- if (m_pRefLine) {
- FX_Free(m_pRefLine);
- }
-}
-static uint8_t PaethPredictor(int a, int b, int c)
-{
- int p = a + b - c;
- int pa = FXSYS_abs(p - a);
- int pb = FXSYS_abs(p - b);
- int pc = FXSYS_abs(p - c);
- if (pa <= pb && pa <= pc) {
- return (uint8_t)a;
- }
- if (pb <= pc) {
- return (uint8_t)b;
- }
- return (uint8_t)c;
-}
-static void PNG_PredictorLine(uint8_t* cur_buf, uint8_t* ref_buf, int pitch, int Bpp)
-{
- uint8_t tag = cur_buf[0];
- if (tag == 0) {
- return;
- }
- cur_buf ++;
- if (ref_buf) {
- ref_buf ++;
- }
- for (int byte = 0; byte < pitch; byte ++) {
- uint8_t raw_byte = cur_buf[byte];
- switch (tag) {
- case 1: {
- uint8_t left = 0;
- if (byte >= Bpp) {
- left = cur_buf[byte - Bpp];
- }
- cur_buf[byte] = raw_byte + left;
- break;
- }
- case 2: {
- uint8_t up = 0;
- if (ref_buf) {
- up = ref_buf[byte];
- }
- cur_buf[byte] = raw_byte + up;
- break;
- }
- case 3: {
- uint8_t left = 0;
- if (byte >= Bpp) {
- left = cur_buf[byte - Bpp];
- }
- uint8_t up = 0;
- if (ref_buf) {
- up = ref_buf[byte];
- }
- cur_buf[byte] = raw_byte + (up + left) / 2;
- break;
- }
- case 4: {
- uint8_t left = 0;
- if (byte >= Bpp) {
- left = cur_buf[byte - Bpp];
- }
- uint8_t up = 0;
- if (ref_buf) {
- up = ref_buf[byte];
- }
- uint8_t upper_left = 0;
- if (byte >= Bpp && ref_buf) {
- upper_left = ref_buf[byte - Bpp];
- }
- cur_buf[byte] = raw_byte + PaethPredictor(left, up, upper_left);
- break;
- }
- }
- }
-}
-void CPDF_PredictorFilter::v_FilterIn(const uint8_t* src_buf, FX_DWORD src_size, CFX_BinaryBuf& dest_buf)
-{
- if (m_pCurLine == NULL) {
- m_pCurLine = FX_Alloc(uint8_t, m_Pitch);
- if (!m_bTiff) {
- m_pRefLine = FX_Alloc(uint8_t, m_Pitch);
- }
+ m_pRefLine = FX_Alloc(uint8_t, m_Pitch);
+ }
+ }
+ while (1) {
+ FX_DWORD read_size = m_Pitch - m_LineInSize;
+ if (read_size > src_size) {
+ read_size = src_size;
+ }
+ FXSYS_memcpy(m_pCurLine + m_LineInSize, src_buf, read_size);
+ m_LineInSize += read_size;
+ if (m_LineInSize < m_Pitch) {
+ break;
+ }
+ src_buf += read_size;
+ src_size -= read_size;
+ if (m_bTiff) {
+ for (FX_DWORD byte = m_Bpp; byte < m_Pitch; byte++) {
+ m_pCurLine[byte] += m_pCurLine[byte - m_Bpp];
+ }
+ dest_buf.AppendBlock(m_pCurLine, m_Pitch);
+ } else {
+ PNG_PredictorLine(m_pCurLine, m_iLine ? m_pRefLine : NULL, m_Pitch - 1,
+ m_Bpp);
+ dest_buf.AppendBlock(m_pCurLine + 1, m_Pitch - 1);
+ m_iLine++;
+ uint8_t* temp = m_pCurLine;
+ m_pCurLine = m_pRefLine;
+ m_pRefLine = temp;
}
- while (1) {
- FX_DWORD read_size = m_Pitch - m_LineInSize;
- if (read_size > src_size) {
- read_size = src_size;
- }
- FXSYS_memcpy(m_pCurLine + m_LineInSize, src_buf, read_size);
- m_LineInSize += read_size;
- if (m_LineInSize < m_Pitch) {
- break;
- }
- src_buf += read_size;
- src_size -= read_size;
- if (m_bTiff) {
- for (FX_DWORD byte = m_Bpp; byte < m_Pitch; byte ++) {
- m_pCurLine[byte] += m_pCurLine[byte - m_Bpp];
+ m_LineInSize = 0;
+ }
+}
+CPDF_Ascii85Filter::CPDF_Ascii85Filter() {
+ m_State = 0;
+ m_CharCount = 0;
+}
+void CPDF_Ascii85Filter::v_FilterIn(const uint8_t* src_buf,
+ FX_DWORD src_size,
+ CFX_BinaryBuf& dest_buf) {
+ for (FX_DWORD i = 0; i < src_size; i++) {
+ uint8_t byte = src_buf[i];
+ if (PDF_CharType[byte] == 'W') {
+ continue;
+ }
+ switch (m_State) {
+ case 0:
+ if (byte >= '!' && byte <= 'u') {
+ int digit = byte - '!';
+ m_CurDWord = digit;
+ m_CharCount = 1;
+ m_State = 1;
+ } else if (byte == 'z') {
+ int zero = 0;
+ dest_buf.AppendBlock(&zero, 4);
+ } else if (byte == '~') {
+ m_State = 2;
+ }
+ break;
+ case 1: {
+ if (byte >= '!' && byte <= 'u') {
+ int digit = byte - '!';
+ m_CurDWord = m_CurDWord * 85 + digit;
+ m_CharCount++;
+ if (m_CharCount == 5) {
+ for (int i = 0; i < 4; i++) {
+ dest_buf.AppendByte((uint8_t)(m_CurDWord >> (3 - i) * 8));
}
- dest_buf.AppendBlock(m_pCurLine, m_Pitch);
- } else {
- PNG_PredictorLine(m_pCurLine, m_iLine ? m_pRefLine : NULL, m_Pitch - 1, m_Bpp);
- dest_buf.AppendBlock(m_pCurLine + 1, m_Pitch - 1);
- m_iLine ++;
- uint8_t* temp = m_pCurLine;
- m_pCurLine = m_pRefLine;
- m_pRefLine = temp;
- }
- m_LineInSize = 0;
- }
-}
-CPDF_Ascii85Filter::CPDF_Ascii85Filter()
-{
- m_State = 0;
- m_CharCount = 0;
-}
-void CPDF_Ascii85Filter::v_FilterIn(const uint8_t* src_buf, FX_DWORD src_size, CFX_BinaryBuf& dest_buf)
-{
- for (FX_DWORD i = 0; i < src_size; i ++) {
- uint8_t byte = src_buf[i];
- if (PDF_CharType[byte] == 'W') {
- continue;
- }
- switch (m_State) {
- case 0:
- if (byte >= '!' && byte <= 'u') {
- int digit = byte - '!';
- m_CurDWord = digit;
- m_CharCount = 1;
- m_State = 1;
- } else if (byte == 'z') {
- int zero = 0;
- dest_buf.AppendBlock(&zero, 4);
- } else if (byte == '~') {
- m_State = 2;
- }
- break;
- case 1: {
- if (byte >= '!' && byte <= 'u') {
- int digit = byte - '!';
- m_CurDWord = m_CurDWord * 85 + digit;
- m_CharCount ++;
- if (m_CharCount == 5) {
- for (int i = 0; i < 4; i ++) {
- dest_buf.AppendByte((uint8_t)(m_CurDWord >> (3 - i) * 8));
- }
- m_State = 0;
- }
- } else if (byte == '~') {
- if (m_CharCount > 1) {
- int i;
- for (i = m_CharCount; i < 5; i ++) {
- m_CurDWord = m_CurDWord * 85 + 84;
- }
- for (i = 0; i < m_CharCount - 1; i ++) {
- dest_buf.AppendByte((uint8_t)(m_CurDWord >> (3 - i) * 8));
- }
- }
- m_State = 2;
- }
- break;
- }
- case 2:
- if (byte == '>') {
- ReportEOF(src_size - i - 1);
- return;
- }
- break;
- }
- }
-}
-CPDF_AsciiHexFilter::CPDF_AsciiHexFilter()
-{
- m_State = 0;
-}
-void CPDF_AsciiHexFilter::v_FilterIn(const uint8_t* src_buf, FX_DWORD src_size, CFX_BinaryBuf& dest_buf)
-{
- for (FX_DWORD i = 0; i < src_size; i ++) {
- uint8_t byte = src_buf[i];
- if (PDF_CharType[byte] == 'W') {
- continue;
- }
- int digit;
- if (byte >= '0' && byte <= '9') {
- digit = byte - '0';
- } else if (byte >= 'a' && byte <= 'f') {
- digit = byte - 'a' + 10;
- } else if (byte >= 'A' && byte <= 'F') {
- digit = byte - 'A' + 10;
- } else {
- if (m_State) {
- dest_buf.AppendByte(m_FirstDigit * 16);
+ m_State = 0;
+ }
+ } else if (byte == '~') {
+ if (m_CharCount > 1) {
+ int i;
+ for (i = m_CharCount; i < 5; i++) {
+ m_CurDWord = m_CurDWord * 85 + 84;
}
- ReportEOF(src_size - i - 1);
- return;
- }
- if (m_State == 0) {
- m_FirstDigit = digit;
- m_State ++;
- } else {
- dest_buf.AppendByte(m_FirstDigit * 16 + digit);
- m_State --;
- }
- }
-}
-CPDF_RunLenFilter::CPDF_RunLenFilter()
-{
- m_State = 0;
- m_Count = 0;
-}
-void CPDF_RunLenFilter::v_FilterIn(const uint8_t* src_buf, FX_DWORD src_size, CFX_BinaryBuf& dest_buf)
-{
- for (FX_DWORD i = 0; i < src_size; i ++) {
- uint8_t byte = src_buf[i];
- switch (m_State) {
- case 0:
- if (byte < 128) {
- m_State = 1;
- m_Count = byte + 1;
- } else if (byte == 128) {
- ReportEOF(src_size - i - 1);
- return;
- } else {
- m_State = 2;
- m_Count = 257 - byte;
- }
- break;
- case 1:
- dest_buf.AppendByte(byte);
- m_Count --;
- if (m_Count == 0) {
- m_State = 0;
- }
- break;
- case 2: {
- dest_buf.AppendBlock(NULL, m_Count);
- FXSYS_memset(dest_buf.GetBuffer() + dest_buf.GetSize() - m_Count, byte, m_Count);
- m_State = 0;
- break;
- }
- }
- }
-}
-CPDF_JpegFilter::CPDF_JpegFilter()
-{
- m_pContext = NULL;
- m_bGotHeader = FALSE;
- m_pScanline = NULL;
- m_iLine = 0;
-}
-CPDF_JpegFilter::~CPDF_JpegFilter()
-{
- if (m_pScanline) {
- FX_Free(m_pScanline);
- }
- if (m_pContext) {
- CPDF_ModuleMgr::Get()->GetJpegModule()->Finish(m_pContext);
- }
-}
-void CPDF_JpegFilter::v_FilterIn(const uint8_t* src_buf, FX_DWORD src_size, CFX_BinaryBuf& dest_buf)
-{
- if (m_pContext == NULL) {
- m_pContext = CPDF_ModuleMgr::Get()->GetJpegModule()->Start();
- }
- const uint8_t* jpeg_src_buf;
- FX_DWORD jpeg_src_size;
- CFX_BinaryBuf temp_buf;
- if (m_InputBuf.GetSize()) {
- temp_buf.EstimateSize(m_InputBuf.GetSize() + src_size);
- temp_buf.AppendBlock(m_InputBuf.GetBuffer(), m_InputBuf.GetSize());
- m_InputBuf.Clear();
- temp_buf.AppendBlock(src_buf, src_size);
- jpeg_src_buf = temp_buf.GetBuffer();
- jpeg_src_size = temp_buf.GetSize();
+ for (i = 0; i < m_CharCount - 1; i++) {
+ dest_buf.AppendByte((uint8_t)(m_CurDWord >> (3 - i) * 8));
+ }
+ }
+ m_State = 2;
+ }
+ break;
+ }
+ case 2:
+ if (byte == '>') {
+ ReportEOF(src_size - i - 1);
+ return;
+ }
+ break;
+ }
+ }
+}
+CPDF_AsciiHexFilter::CPDF_AsciiHexFilter() {
+ m_State = 0;
+}
+void CPDF_AsciiHexFilter::v_FilterIn(const uint8_t* src_buf,
+ FX_DWORD src_size,
+ CFX_BinaryBuf& dest_buf) {
+ for (FX_DWORD i = 0; i < src_size; i++) {
+ uint8_t byte = src_buf[i];
+ if (PDF_CharType[byte] == 'W') {
+ continue;
+ }
+ int digit;
+ if (byte >= '0' && byte <= '9') {
+ digit = byte - '0';
+ } else if (byte >= 'a' && byte <= 'f') {
+ digit = byte - 'a' + 10;
+ } else if (byte >= 'A' && byte <= 'F') {
+ digit = byte - 'A' + 10;
} else {
- jpeg_src_buf = src_buf;
- jpeg_src_size = src_size;
- }
- CPDF_ModuleMgr::Get()->GetJpegModule()->Input(m_pContext, jpeg_src_buf, jpeg_src_size);
- if (!m_bGotHeader) {
- int ret = CPDF_ModuleMgr::Get()->GetJpegModule()->ReadHeader(m_pContext, &m_Width, &m_Height, &m_nComps);
- int left_size = CPDF_ModuleMgr::Get()->GetJpegModule()->GetAvailInput(m_pContext);
- if (ret == 1) {
- ReportEOF(left_size);
- return;
- }
- if (ret == 2) {
- m_InputBuf.AppendBlock(jpeg_src_buf + jpeg_src_size - left_size, left_size);
- return;
- }
- CPDF_ModuleMgr::Get()->GetJpegModule()->StartScanline(m_pContext, 1);
- m_bGotHeader = TRUE;
- m_Pitch = m_Width * m_nComps;
- }
- if (m_pScanline == NULL) {
- m_pScanline = FX_Alloc(uint8_t, m_Pitch + 4);
- }
- while (1) {
- if (!CPDF_ModuleMgr::Get()->GetJpegModule()->ReadScanline(m_pContext, m_pScanline)) {
- int left_size = CPDF_ModuleMgr::Get()->GetJpegModule()->GetAvailInput(m_pContext);
- m_InputBuf.AppendBlock(jpeg_src_buf + jpeg_src_size - left_size, left_size);
- break;
- }
- dest_buf.AppendBlock(m_pScanline, m_Pitch);
- m_iLine ++;
- if (m_iLine == m_Height) {
- ReportEOF(CPDF_ModuleMgr::Get()->GetJpegModule()->GetAvailInput(m_pContext));
- return;
- }
- }
-}
-CPDF_FaxFilter::CPDF_FaxFilter()
-{
- m_Encoding = 0;
- m_bEndOfLine = FALSE;
- m_bByteAlign = FALSE;
- m_bBlack = FALSE;
- m_nRows = 0;
- m_nColumns = 0;
- m_Pitch = 0;
- m_pScanlineBuf = NULL;
- m_pRefBuf = NULL;
- m_iRow = 0;
- m_InputBitPos = 0;
-}
-CPDF_FaxFilter::~CPDF_FaxFilter()
-{
- if (m_pScanlineBuf) {
- FX_Free(m_pScanlineBuf);
- }
- if (m_pRefBuf) {
- FX_Free(m_pRefBuf);
- }
-}
-FX_BOOL CPDF_FaxFilter::Initialize(int Encoding, int bEndOfLine, int bByteAlign, int bBlack, int nRows, int nColumns)
-{
- m_Encoding = Encoding;
- m_bEndOfLine = bEndOfLine;
- m_bByteAlign = bByteAlign;
- m_bBlack = bBlack;
- m_nRows = nRows;
- m_nColumns = nColumns;
- m_Pitch = (m_nColumns + 7) / 8;
- m_pScanlineBuf = FX_Alloc(uint8_t, m_Pitch);
- m_pRefBuf = FX_Alloc(uint8_t, m_Pitch);
- FXSYS_memset(m_pScanlineBuf, 0xff, m_Pitch);
- FXSYS_memset(m_pRefBuf, 0xff, m_Pitch);
- m_iRow = 0;
- m_InputBitPos = 0;
- return TRUE;
-}
-void CPDF_FaxFilter::v_FilterIn(const uint8_t* src_buf, FX_DWORD src_size, CFX_BinaryBuf& dest_buf)
-{
- const uint8_t* fax_src_buf;
- FX_DWORD fax_src_size;
- CFX_BinaryBuf temp_buf;
- int bitpos;
- if (m_InputBuf.GetSize()) {
- temp_buf.EstimateSize(m_InputBuf.GetSize() + src_size);
- temp_buf.AppendBlock(m_InputBuf.GetBuffer(), m_InputBuf.GetSize());
- m_InputBuf.Clear();
- temp_buf.AppendBlock(src_buf, src_size);
- fax_src_buf = temp_buf.GetBuffer();
- fax_src_size = temp_buf.GetSize();
- bitpos = m_InputBitPos;
+ if (m_State) {
+ dest_buf.AppendByte(m_FirstDigit * 16);
+ }
+ ReportEOF(src_size - i - 1);
+ return;
+ }
+ if (m_State == 0) {
+ m_FirstDigit = digit;
+ m_State++;
} else {
- fax_src_buf = src_buf;
- fax_src_size = src_size;
- bitpos = 0;
- }
- ProcessData(fax_src_buf, fax_src_size, bitpos, FALSE, dest_buf);
- int left_bits = fax_src_size * 8 - bitpos;
- m_InputBuf.AppendBlock(fax_src_buf + bitpos / 8, (left_bits + 7) / 8);
- m_InputBitPos = bitpos % 8;
-}
-void CPDF_FaxFilter::v_FilterFinish(CFX_BinaryBuf& dest_buf)
-{
- ProcessData(m_InputBuf.GetBuffer(), m_InputBuf.GetSize(), m_InputBitPos, TRUE, dest_buf);
+ dest_buf.AppendByte(m_FirstDigit * 16 + digit);
+ m_State--;
+ }
+ }
+}
+CPDF_RunLenFilter::CPDF_RunLenFilter() {
+ m_State = 0;
+ m_Count = 0;
+}
+void CPDF_RunLenFilter::v_FilterIn(const uint8_t* src_buf,
+ FX_DWORD src_size,
+ CFX_BinaryBuf& dest_buf) {
+ for (FX_DWORD i = 0; i < src_size; i++) {
+ uint8_t byte = src_buf[i];
+ switch (m_State) {
+ case 0:
+ if (byte < 128) {
+ m_State = 1;
+ m_Count = byte + 1;
+ } else if (byte == 128) {
+ ReportEOF(src_size - i - 1);
+ return;
+ } else {
+ m_State = 2;
+ m_Count = 257 - byte;
+ }
+ break;
+ case 1:
+ dest_buf.AppendByte(byte);
+ m_Count--;
+ if (m_Count == 0) {
+ m_State = 0;
+ }
+ break;
+ case 2: {
+ dest_buf.AppendBlock(NULL, m_Count);
+ FXSYS_memset(dest_buf.GetBuffer() + dest_buf.GetSize() - m_Count, byte,
+ m_Count);
+ m_State = 0;
+ break;
+ }
+ }
+ }
+}
+CPDF_JpegFilter::CPDF_JpegFilter() {
+ m_pContext = NULL;
+ m_bGotHeader = FALSE;
+ m_pScanline = NULL;
+ m_iLine = 0;
+}
+CPDF_JpegFilter::~CPDF_JpegFilter() {
+ if (m_pScanline) {
+ FX_Free(m_pScanline);
+ }
+ if (m_pContext) {
+ CPDF_ModuleMgr::Get()->GetJpegModule()->Finish(m_pContext);
+ }
+}
+void CPDF_JpegFilter::v_FilterIn(const uint8_t* src_buf,
+ FX_DWORD src_size,
+ CFX_BinaryBuf& dest_buf) {
+ if (m_pContext == NULL) {
+ m_pContext = CPDF_ModuleMgr::Get()->GetJpegModule()->Start();
+ }
+ const uint8_t* jpeg_src_buf;
+ FX_DWORD jpeg_src_size;
+ CFX_BinaryBuf temp_buf;
+ if (m_InputBuf.GetSize()) {
+ temp_buf.EstimateSize(m_InputBuf.GetSize() + src_size);
+ temp_buf.AppendBlock(m_InputBuf.GetBuffer(), m_InputBuf.GetSize());
+ m_InputBuf.Clear();
+ temp_buf.AppendBlock(src_buf, src_size);
+ jpeg_src_buf = temp_buf.GetBuffer();
+ jpeg_src_size = temp_buf.GetSize();
+ } else {
+ jpeg_src_buf = src_buf;
+ jpeg_src_size = src_size;
+ }
+ CPDF_ModuleMgr::Get()->GetJpegModule()->Input(m_pContext, jpeg_src_buf,
+ jpeg_src_size);
+ if (!m_bGotHeader) {
+ int ret = CPDF_ModuleMgr::Get()->GetJpegModule()->ReadHeader(
+ m_pContext, &m_Width, &m_Height, &m_nComps);
+ int left_size =
+ CPDF_ModuleMgr::Get()->GetJpegModule()->GetAvailInput(m_pContext);
+ if (ret == 1) {
+ ReportEOF(left_size);
+ return;
+ }
+ if (ret == 2) {
+ m_InputBuf.AppendBlock(jpeg_src_buf + jpeg_src_size - left_size,
+ left_size);
+ return;
+ }
+ CPDF_ModuleMgr::Get()->GetJpegModule()->StartScanline(m_pContext, 1);
+ m_bGotHeader = TRUE;
+ m_Pitch = m_Width * m_nComps;
+ }
+ if (m_pScanline == NULL) {
+ m_pScanline = FX_Alloc(uint8_t, m_Pitch + 4);
+ }
+ while (1) {
+ if (!CPDF_ModuleMgr::Get()->GetJpegModule()->ReadScanline(m_pContext,
+ m_pScanline)) {
+ int left_size =
+ CPDF_ModuleMgr::Get()->GetJpegModule()->GetAvailInput(m_pContext);
+ m_InputBuf.AppendBlock(jpeg_src_buf + jpeg_src_size - left_size,
+ left_size);
+ break;
+ }
+ dest_buf.AppendBlock(m_pScanline, m_Pitch);
+ m_iLine++;
+ if (m_iLine == m_Height) {
+ ReportEOF(
+ CPDF_ModuleMgr::Get()->GetJpegModule()->GetAvailInput(m_pContext));
+ return;
+ }
+ }
+}
+CPDF_FaxFilter::CPDF_FaxFilter() {
+ m_Encoding = 0;
+ m_bEndOfLine = FALSE;
+ m_bByteAlign = FALSE;
+ m_bBlack = FALSE;
+ m_nRows = 0;
+ m_nColumns = 0;
+ m_Pitch = 0;
+ m_pScanlineBuf = NULL;
+ m_pRefBuf = NULL;
+ m_iRow = 0;
+ m_InputBitPos = 0;
+}
+CPDF_FaxFilter::~CPDF_FaxFilter() {
+ if (m_pScanlineBuf) {
+ FX_Free(m_pScanlineBuf);
+ }
+ if (m_pRefBuf) {
+ FX_Free(m_pRefBuf);
+ }
+}
+FX_BOOL CPDF_FaxFilter::Initialize(int Encoding,
+ int bEndOfLine,
+ int bByteAlign,
+ int bBlack,
+ int nRows,
+ int nColumns) {
+ m_Encoding = Encoding;
+ m_bEndOfLine = bEndOfLine;
+ m_bByteAlign = bByteAlign;
+ m_bBlack = bBlack;
+ m_nRows = nRows;
+ m_nColumns = nColumns;
+ m_Pitch = (m_nColumns + 7) / 8;
+ m_pScanlineBuf = FX_Alloc(uint8_t, m_Pitch);
+ m_pRefBuf = FX_Alloc(uint8_t, m_Pitch);
+ FXSYS_memset(m_pScanlineBuf, 0xff, m_Pitch);
+ FXSYS_memset(m_pRefBuf, 0xff, m_Pitch);
+ m_iRow = 0;
+ m_InputBitPos = 0;
+ return TRUE;
+}
+void CPDF_FaxFilter::v_FilterIn(const uint8_t* src_buf,
+ FX_DWORD src_size,
+ CFX_BinaryBuf& dest_buf) {
+ const uint8_t* fax_src_buf;
+ FX_DWORD fax_src_size;
+ CFX_BinaryBuf temp_buf;
+ int bitpos;
+ if (m_InputBuf.GetSize()) {
+ temp_buf.EstimateSize(m_InputBuf.GetSize() + src_size);
+ temp_buf.AppendBlock(m_InputBuf.GetBuffer(), m_InputBuf.GetSize());
+ m_InputBuf.Clear();
+ temp_buf.AppendBlock(src_buf, src_size);
+ fax_src_buf = temp_buf.GetBuffer();
+ fax_src_size = temp_buf.GetSize();
+ bitpos = m_InputBitPos;
+ } else {
+ fax_src_buf = src_buf;
+ fax_src_size = src_size;
+ bitpos = 0;
+ }
+ ProcessData(fax_src_buf, fax_src_size, bitpos, FALSE, dest_buf);
+ int left_bits = fax_src_size * 8 - bitpos;
+ m_InputBuf.AppendBlock(fax_src_buf + bitpos / 8, (left_bits + 7) / 8);
+ m_InputBitPos = bitpos % 8;
+}
+void CPDF_FaxFilter::v_FilterFinish(CFX_BinaryBuf& dest_buf) {
+ ProcessData(m_InputBuf.GetBuffer(), m_InputBuf.GetSize(), m_InputBitPos, TRUE,
+ dest_buf);
}
FX_BOOL _FaxSkipEOL(const uint8_t* src_buf, int bitsize, int& bitpos);
-FX_BOOL _FaxG4GetRow(const uint8_t* src_buf, int bitsize, int& bitpos, uint8_t* dest_buf, const uint8_t* ref_buf, int columns);
-FX_BOOL _FaxGet1DLine(const uint8_t* src_buf, int bitsize, int& bitpos, uint8_t* dest_buf, int columns);
-void CPDF_FaxFilter::ProcessData(const uint8_t* src_buf, FX_DWORD src_size, int& bitpos, FX_BOOL bFinish,
- CFX_BinaryBuf& dest_buf)
-{
- int bitsize = src_size * 8;
- while (1) {
- if ((bitsize < bitpos + 256) && !bFinish) {
- return;
- }
- int start_bitpos = bitpos;
- FXSYS_memset(m_pScanlineBuf, 0xff, m_Pitch);
- if (!ReadLine(src_buf, bitsize, bitpos)) {
- bitpos = start_bitpos;
- return;
- }
- if (m_Encoding) {
- FXSYS_memcpy(m_pRefBuf, m_pScanlineBuf, m_Pitch);
- }
- if (m_bBlack) {
- for (int i = 0; i < m_Pitch; i ++) {
- m_pScanlineBuf[i] = ~m_pScanlineBuf[i];
- }
- }
- dest_buf.AppendBlock(m_pScanlineBuf, m_Pitch);
- m_iRow ++;
- if (m_iRow == m_nRows) {
- ReportEOF(src_size - (bitpos + 7) / 8);
- return;
- }
- }
-}
-FX_BOOL CPDF_FaxFilter::ReadLine(const uint8_t* src_buf, int bitsize, int& bitpos)
-{
- if (!_FaxSkipEOL(src_buf, bitsize, bitpos)) {
- return FALSE;
- }
- FX_BOOL ret;
- if (m_Encoding < 0) {
- ret = _FaxG4GetRow(src_buf, bitsize, bitpos, m_pScanlineBuf, m_pRefBuf, m_nColumns);
- } else if (m_Encoding == 0) {
- ret = _FaxGet1DLine(src_buf, bitsize, bitpos, m_pScanlineBuf, m_nColumns);
+FX_BOOL _FaxG4GetRow(const uint8_t* src_buf,
+ int bitsize,
+ int& bitpos,
+ uint8_t* dest_buf,
+ const uint8_t* ref_buf,
+ int columns);
+FX_BOOL _FaxGet1DLine(const uint8_t* src_buf,
+ int bitsize,
+ int& bitpos,
+ uint8_t* dest_buf,
+ int columns);
+void CPDF_FaxFilter::ProcessData(const uint8_t* src_buf,
+ FX_DWORD src_size,
+ int& bitpos,
+ FX_BOOL bFinish,
+ CFX_BinaryBuf& dest_buf) {
+ int bitsize = src_size * 8;
+ while (1) {
+ if ((bitsize < bitpos + 256) && !bFinish) {
+ return;
+ }
+ int start_bitpos = bitpos;
+ FXSYS_memset(m_pScanlineBuf, 0xff, m_Pitch);
+ if (!ReadLine(src_buf, bitsize, bitpos)) {
+ bitpos = start_bitpos;
+ return;
+ }
+ if (m_Encoding) {
+ FXSYS_memcpy(m_pRefBuf, m_pScanlineBuf, m_Pitch);
+ }
+ if (m_bBlack) {
+ for (int i = 0; i < m_Pitch; i++) {
+ m_pScanlineBuf[i] = ~m_pScanlineBuf[i];
+ }
+ }
+ dest_buf.AppendBlock(m_pScanlineBuf, m_Pitch);
+ m_iRow++;
+ if (m_iRow == m_nRows) {
+ ReportEOF(src_size - (bitpos + 7) / 8);
+ return;
+ }
+ }
+}
+FX_BOOL CPDF_FaxFilter::ReadLine(const uint8_t* src_buf,
+ int bitsize,
+ int& bitpos) {
+ if (!_FaxSkipEOL(src_buf, bitsize, bitpos)) {
+ return FALSE;
+ }
+ FX_BOOL ret;
+ if (m_Encoding < 0) {
+ ret = _FaxG4GetRow(src_buf, bitsize, bitpos, m_pScanlineBuf, m_pRefBuf,
+ m_nColumns);
+ } else if (m_Encoding == 0) {
+ ret = _FaxGet1DLine(src_buf, bitsize, bitpos, m_pScanlineBuf, m_nColumns);
+ } else {
+ if (bitpos == bitsize) {
+ return FALSE;
+ }
+ FX_BOOL bNext1D = src_buf[bitpos / 8] & (1 << (7 - bitpos % 8));
+ bitpos++;
+ if (bNext1D) {
+ ret = _FaxGet1DLine(src_buf, bitsize, bitpos, m_pScanlineBuf, m_nColumns);
} else {
- if (bitpos == bitsize) {
- return FALSE;
- }
- FX_BOOL bNext1D = src_buf[bitpos / 8] & (1 << (7 - bitpos % 8));
- bitpos ++;
- if (bNext1D) {
- ret = _FaxGet1DLine(src_buf, bitsize, bitpos, m_pScanlineBuf, m_nColumns);
- } else {
- ret = _FaxG4GetRow(src_buf, bitsize, bitpos, m_pScanlineBuf, m_pRefBuf, m_nColumns);
- }
- }
- if (!ret) {
- return FALSE;
- }
- if (m_bEndOfLine)
- if (!_FaxSkipEOL(src_buf, bitsize, bitpos)) {
- return FALSE;
- }
- if (m_bByteAlign) {
- bitpos = (bitpos + 7) / 8 * 8;
+ ret = _FaxG4GetRow(src_buf, bitsize, bitpos, m_pScanlineBuf, m_pRefBuf,
+ m_nColumns);
+ }
+ }
+ if (!ret) {
+ return FALSE;
+ }
+ if (m_bEndOfLine)
+ if (!_FaxSkipEOL(src_buf, bitsize, bitpos)) {
+ return FALSE;
}
- return TRUE;
+ if (m_bByteAlign) {
+ bitpos = (bitpos + 7) / 8 * 8;
+ }
+ return TRUE;
}
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