libbpg-0.9.3

jctvc/TLibEncoder/SyntaxElementWriter.h

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+/* The copyright in this software is being made available under the BSD
+ * License, included below. This software may be subject to other third party
+ * and contributor rights, including patent rights, and no such rights are
+ * granted under this license.
+ *
+ * Copyright (c) 2010-2014, ITU/ISO/IEC
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ *  * Redistributions of source code must retain the above copyright notice,
+ *    this list of conditions and the following disclaimer.
+ *  * Redistributions in binary form must reproduce the above copyright notice,
+ *    this list of conditions and the following disclaimer in the documentation
+ *    and/or other materials provided with the distribution.
+ *  * Neither the name of the ITU/ISO/IEC nor the names of its contributors may
+ *    be used to endorse or promote products derived from this software without
+ *    specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS
+ * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
+ * THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/** \file     SyntaxElementWriter.h
+    \brief    CAVLC encoder class (header)
+*/
+
+#ifndef __SYNTAXELEMENTWRITER__
+#define __SYNTAXELEMENTWRITER__
+
+#if _MSC_VER > 1000
+#pragma once
+#endif // _MSC_VER > 1000
+
+#include "TLibCommon/CommonDef.h"
+#include "TLibCommon/TComBitStream.h"
+#include "TLibCommon/TComRom.h"
+
+//! \ingroup TLibEncoder
+//! \{
+
+#if ENC_DEC_TRACE
+
+#define WRITE_CODE( value, length, name)    xWriteCodeTr ( value, length, name )
+#define WRITE_UVLC( value,         name)    xWriteUvlcTr ( value,         name )
+#define WRITE_SVLC( value,         name)    xWriteSvlcTr ( value,         name )
+#define WRITE_FLAG( value,         name)    xWriteFlagTr ( value,         name )
+
+#else
+
+#define WRITE_CODE( value, length, name)     xWriteCode ( value, length )
+#define WRITE_UVLC( value,         name)     xWriteUvlc ( value )
+#define WRITE_SVLC( value,         name)     xWriteSvlc ( value )
+#define WRITE_FLAG( value,         name)     xWriteFlag ( value )
+
+#endif
+
+class SyntaxElementWriter
+{
+protected:
+  TComBitIf*    m_pcBitIf;
+
+  SyntaxElementWriter()
+  :m_pcBitIf(NULL)
+  {};
+  virtual ~SyntaxElementWriter() {};
+
+  Void  setBitstream          ( TComBitIf* p )  { m_pcBitIf = p;  }
+
+  Void  xWriteCode            ( UInt uiCode, UInt uiLength );
+  Void  xWriteUvlc            ( UInt uiCode );
+  Void  xWriteSvlc            ( Int  iCode   );
+  Void  xWriteFlag            ( UInt uiCode );
+#if ENC_DEC_TRACE
+  Void  xWriteCodeTr          ( UInt value, UInt  length, const Char *pSymbolName);
+  Void  xWriteUvlcTr          ( UInt value,               const Char *pSymbolName);
+  Void  xWriteSvlcTr          ( Int  value,               const Char *pSymbolName);
+  Void  xWriteFlagTr          ( UInt value,               const Char *pSymbolName);
+#endif
+
+  UInt  xConvertToUInt        ( Int iValue ) {  return ( iValue <= 0) ? -iValue<<1 : (iValue<<1)-1; }
+};
+
+//! \}
+
+#endif // !defined(__SYNTAXELEMENTWRITER__)
+