summaryrefslogtreecommitdiff
path: root/core/fxcodec/jbig2/JBig2_HuffmanTable.h
diff options
context:
space:
mode:
Diffstat (limited to 'core/fxcodec/jbig2/JBig2_HuffmanTable.h')
-rw-r--r--core/fxcodec/jbig2/JBig2_HuffmanTable.h50
1 files changed, 50 insertions, 0 deletions
diff --git a/core/fxcodec/jbig2/JBig2_HuffmanTable.h b/core/fxcodec/jbig2/JBig2_HuffmanTable.h
new file mode 100644
index 0000000000..892c19e9d6
--- /dev/null
+++ b/core/fxcodec/jbig2/JBig2_HuffmanTable.h
@@ -0,0 +1,50 @@
+// 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
+
+#ifndef CORE_FXCODEC_JBIG2_JBIG2_HUFFMANTABLE_H_
+#define CORE_FXCODEC_JBIG2_JBIG2_HUFFMANTABLE_H_
+
+#include <vector>
+
+#include "core/include/fxcrt/fx_system.h"
+
+class CJBig2_BitStream;
+struct JBig2TableLine;
+
+class CJBig2_HuffmanTable {
+ public:
+ CJBig2_HuffmanTable(const JBig2TableLine* pTable,
+ FX_DWORD nLines,
+ bool bHTOOB);
+
+ explicit CJBig2_HuffmanTable(CJBig2_BitStream* pStream);
+
+ ~CJBig2_HuffmanTable();
+
+ bool IsHTOOB() const { return HTOOB; }
+ FX_DWORD Size() const { return NTEMP; }
+ const std::vector<int>& GetCODES() const { return CODES; }
+ const std::vector<int>& GetPREFLEN() const { return PREFLEN; }
+ const std::vector<int>& GetRANGELEN() const { return RANGELEN; }
+ const std::vector<int>& GetRANGELOW() const { return RANGELOW; }
+ bool IsOK() const { return m_bOK; }
+
+ private:
+ void ParseFromStandardTable(const JBig2TableLine* pTable);
+ bool ParseFromCodedBuffer(CJBig2_BitStream* pStream);
+ void InitCodes();
+ void ExtendBuffers(bool increment);
+
+ bool m_bOK;
+ bool HTOOB;
+ FX_DWORD NTEMP;
+ std::vector<int> CODES;
+ std::vector<int> PREFLEN;
+ std::vector<int> RANGELEN;
+ std::vector<int> RANGELOW;
+};
+
+#endif // CORE_FXCODEC_JBIG2_JBIG2_HUFFMANTABLE_H_