src/decoder/IDecoder.cpp

   1 /* ***** BEGIN LICENSE BLOCK *****
   2 *
   3 * $Id:  $
   4 *
   5 * Version: MPL 1.1/GPL 2.0/LGPL 2.1
   6 *
   7 * The contents of this file are subject to the Mozilla Public License
   8 * Version 1.1 (the "License"); you may not use this file except in compliance
   9 * with the License. You may obtain a copy of the License at
  10 * http://www.mozilla.org/MPL/
  11 *
  12 * Software distributed under the License is distributed on an "AS IS" basis,
  13 * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License for
  14 * the specific language governing rights and limitations under the License.
  15 *
  16 * The Original Code is BBC Research code.
  17 *
  18 * The Initial Developer of the Original Code is the British Broadcasting
  19 * Corporation.
  20 * Portions created by the Initial Developer are Copyright (C) 2007.
  21 * All Rights Reserved.
  22 *
  23 * Contributor(s): Andrea Gabriellini (Original Author)
  24 *
  25 * Alternatively, the contents of this file may be used under the terms of
  26 * the GNU General Public License Version 2 (the "GPL"), or the GNU Lesser
  27 * Public License Version 2.1 (the "LGPL"), in which case the provisions of
  28 * the GPL or the LGPL are applicable instead of those above. If you wish to
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  34 * your version of this file under the terms of any one of the MPL, the GPL
  35 * or the LGPL.
  36 * ***** END LICENSE BLOCK ***** */
  37
  38 #ifdef HAVE_CONFIG_H
  39 #include "config.h"
  40 #endif
  41
  42 #include <decoder/IDecoder.hpp>
  43 #include <decoder/DefaultFrameMemoryManager.hpp>
  44
  45 using namespace ::dirac::decoder;
  46
  47
  48 void
  49 IDecoderState::doNextAction()
  50 {
  51   run();
  52 }
  53
  54 bool
  55 IDecoderState::isEndOfSequence() const
  56 {
  57   return endOfSequence();
  58 }
  59
  60
  61 DecoderException::DecoderException ( std::string const& msg )
  62 : std::runtime_error ( msg ) {}
  63
  64
  65 IDecoder::size_type
  66 IDecoder::getFrameBufferSize ( int width, int height, ChromaFormat cf )
  67 {
  68   switch ( cf ) {
  69     case ( CHROMA_444 ) : {
  70       return width * height * 3;
  71       // break;
  72     }
  73     case ( CHROMA_422 ) : {
  74       return width * height * 2;
  75       // break;
  76     }
  77     case ( CHROMA_420 ) : {
  78       return ( width * height * 3 ) / 2;
  79       // break;
  80     }
  81     default : {
  82       throw DecoderException ( "Dirac decoder: invalid chroma format" );
  83       // break;
  84     }
  85   }
  86 }
  87
  88 IDecoder::IDecoder ( ParserAutoPtr parser, FrameManagerAutoPtr manager )
  89 : parser_ ( parser ), manager_ ( manager )
  90 {
  91   DIRAC_MESSAGE_ASSERT ( "parser and frame manager cannot be null"
  92                         , 0 != parser_.get() && 0 != manager_.get() );
  93 }
  94
  95 IDecoder::~IDecoder()  {}
  96
  97
  98 IDecoder::ParserAutoPtr
  99 IDecoder::releaseParser()
 100 {
 101   return parser_;
 102 }
 103
 104 void
 105 IDecoder::reacquireParser ( IDecoder::ParserAutoPtr parser )
 106 {
 107   if ( parser_.get() ) {
 108     throw DecoderException ( "tried to set a parser over an existing one" );
 109   }
 110   DIRAC_MESSAGE_ASSERT ( "parser cannot be null", 0 != parser.get() );
 111   parser_ = parser;
 112   resetDecoder();
 113 }
 114
 115
 116 void
 117 IDecoder::decode()
 118 {
 119   runDecoder();
 120 }
 121
 122 IDecoderState*
 123 IDecoder::getState()
 124 {
 125   return getDecoderState();
 126 }
 127
 128 IDecoder::size_type
 129 IDecoder::numberOfDecodedFrames() const
 130 {
 131   return numberOfFrames();
 132 }
 133
 134 IDecoder::size_type
 135 IDecoder::frameWidth() const
 136 {
 137   return getFrameWidth();
 138 }
 139
 140 IDecoder::size_type
 141 IDecoder::frameHeight() const
 142 {
 143   return getFrameHeight();
 144 }
 145
 146 ChromaFormat
 147 IDecoder::chromaFormat() const
 148 {
 149   return getChromaFormat();
 150 }
 151
 152
 153