Dirac - A Video Codec

Created by the British Broadcasting Corporation.


dirac_byte_stream.h

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00001 /* ***** BEGIN LICENSE BLOCK *****
00002 *
00003 * $Id: dirac_byte_stream.h,v 1.4 2008/08/14 00:51:08 asuraparaju Exp $ $Name: Dirac_1_0_2 $
00004 *
00005 * Version: MPL 1.1/GPL 2.0/LGPL 2.1
00006 *
00007 * The contents of this file are subject to the Mozilla Public License
00008 * Version 1.1 (the "License"); you may not use this file except in compliance
00009 * with the License. You may obtain a copy of the License at
00010 * http://www.mozilla.org/MPL/
00011 *
00012 * Software distributed under the License is distributed on an "AS IS" basis,
00013 * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License for
00014 * the specific language governing rights and limitations under the License.
00015 *
00016 * The Original Code is BBC Research and Development code.
00017 *
00018 * The Initial Developer of the Original Code is the British Broadcasting
00019 * Corporation.
00020 * Portions created by the Initial Developer are Copyright (C) 2004.
00021 * All Rights Reserved.
00022 *
00023 * Contributor(s): Andrew Kennedy (Original Author)
00024 *                 Anuradha Suraparaju
00025 *
00026 * Alternatively, the contents of this file may be used under the terms of
00027 * the GNU General Public License Version 2 (the "GPL"), or the GNU Lesser
00028 * Public License Version 2.1 (the "LGPL"), in which case the provisions of
00029 * the GPL or the LGPL are applicable instead of those above. If you wish to
00030 * allow use of your version of this file only under the terms of the either
00031 * the GPL or LGPL and not to allow others to use your version of this file
00032 * under the MPL, indicate your decision by deleting the provisions above
00033 * and replace them with the notice and other provisions required by the GPL
00034 * or LGPL. If you do not delete the provisions above, a recipient may use
00035 * your version of this file under the terms of any one of the MPL, the GPL
00036 * or the LGPL.
00037 * ***** END LICENSE BLOCK ***** */
00038 
00042 #ifndef dirac_byte_stream_h
00043 #define dirac_byte_stream_h
00044 
00045 //SYSTEM INCLUDES
00046 #include <queue>
00047 
00048 //LOCAL INCLUDES
00049 #include "byteio.h"             // Parent class
00050 #include "accessunit_byteio.h"  // manages parse-unit types
00051 #include "picture_byteio.h"       // manages parse-unit types
00052 
00053 namespace dirac
00054 {
00055 
00060     class DiracByteStream : public ByteIO
00061     {
00062         public:
00063 
00067         DiracByteStream();
00068 
00072         ~DiracByteStream();
00073 
00079         void AddBytes(char* start, int count);
00080 
00085         DiracByteStats GetLastUnitStats();
00086 
00090         ParseUnitByteIO* GetNextParseUnit();
00091 
00092 
00096         DiracByteStats GetSequenceStats() const;
00097 
00102         void AddSequenceHeader(SequenceHeaderByteIO *p_seqheader_byteio);
00103 
00108         void AddPicture(PictureByteIO *p_frame_byteio);
00109 
00113         void Clear();
00114 
00119         DiracByteStats EndSequence();
00120 
00124         const std::string GetBytes();
00125 
00129         bool IsUnitAvailable() const;
00130 
00131         private:
00132 
00133         void Reset(ParseUnitByteIO* p_curr_unit, int pos);
00134 
00135         private:
00136 
00140         typedef std::queue< std::pair <ParseUnitType, ParseUnitByteIO*> > ParseUnitList;
00141         ParseUnitList       m_parse_unit_list;
00142 
00147         ParseUnitByteIO* mp_prev_parse_unit;
00148 
00152         DiracByteStats      m_sequence_stats;
00153 
00154     };
00155 
00156 } // namespace dirac
00157 
00158 #endif

© 2004 British Broadcasting Corporation. Dirac code licensed under the Mozilla Public License (MPL) Version 1.1.
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