source: 3DVCSoftware/trunk/source/App/TAppExtractor/TAppExtrTop.cpp @ 56

Last change on this file since 56 was 56, checked in by hschwarz, 12 years ago

updated trunk (move to HM6.1)

  • Property svn:eol-style set to native
File size: 4.9 KB
Line 
1/* The copyright in this software is being made available under the BSD
2 * License, included below. This software may be subject to other third party
3 * and contributor rights, including patent rights, and no such rights are
4 * granted under this license. 
5 *
6 * Copyright (c) 2010-2011, ISO/IEC
7 * All rights reserved.
8 *
9 * Redistribution and use in source and binary forms, with or without
10 * modification, are permitted provided that the following conditions are met:
11 *
12 *  * Redistributions of source code must retain the above copyright notice,
13 *    this list of conditions and the following disclaimer.
14 *  * Redistributions in binary form must reproduce the above copyright notice,
15 *    this list of conditions and the following disclaimer in the documentation
16 *    and/or other materials provided with the distribution.
17 *  * Neither the name of the ISO/IEC nor the names of its contributors may
18 *    be used to endorse or promote products derived from this software without
19 *    specific prior written permission.
20 *
21 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
22 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS
25 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
26 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
27 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
28 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
29 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
30 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
31 * THE POSSIBILITY OF SUCH DAMAGE.
32 */
33
34/** \file     TAppExtrTop.cpp
35    \brief    Extractor application class
36*/
37
38#include "TAppExtrTop.h"
39#include "../../Lib/TLibDecoder/AnnexBread.h"
40#include <fstream>
41#include <list>
42#include <stdio.h>
43#include <fcntl.h>
44#include <assert.h>
45
46// ====================================================================================================================
47// Constructor / destructor / initialization / destroy
48// ====================================================================================================================
49
50TAppExtrTop::TAppExtrTop()
51{
52}
53
54TAppExtrTop::~TAppExtrTop()
55{
56}
57
58// ====================================================================================================================
59// Public member functions
60// ====================================================================================================================
61
62/**
63 - until the end of the bitstream, call extraction function in TExtrTop class
64 */
65Void TAppExtrTop::extract()
66{
67
68  ifstream inputBitstreamFile( m_pchInputBitstreamFile, ifstream::in | ifstream::binary );
69  if( inputBitstreamFile.fail() )
70  {
71    fprintf( stderr, "\nfailed to open bitstream file `%s' for reading\n", m_pchInputBitstreamFile );
72    exit( EXIT_FAILURE );
73  }
74
75  fstream outputBitstreamFile;
76  if( m_pchOutputBitstreamFile )
77  {
78    outputBitstreamFile.open( m_pchOutputBitstreamFile, fstream::binary | fstream::out );
79    if( outputBitstreamFile.fail() )
80    {
81      fprintf( stderr, "\nfailed to open bitstream file `%s' for writing\n", m_pchOutputBitstreamFile );
82      exit( EXIT_FAILURE );
83    }
84  }
85
86  InputByteStream inputBytestream( inputBitstreamFile );
87
88  Bool bEndOfFile = false;
89  while( !bEndOfFile )
90  {
91    streampos location = inputBitstreamFile.tellg();
92    AnnexBStats stats = AnnexBStats();
93    vector<uint8_t> nalUnit;
94    InputNALUnit nalu;
95    bEndOfFile = byteStreamNALUnit( inputBytestream, nalUnit, stats );
96
97    // handle NAL unit
98    if( nalUnit.empty() )
99    {
100      /* this can happen if the following occur:
101       *  - empty input file
102       *  - two back-to-back start_code_prefixes
103       *  - start_code_prefix immediately followed by EOF
104       */
105      fprintf( stderr, "Warning: Attempt to decode an empty NAL unit\n" );
106    }
107    else
108    {
109      read( nalu, nalUnit );
110
111      // decide whether to extract packet or not
112      if ( m_cTExtrTop.extract( nalu, m_suiExtractLayerIds ) && outputBitstreamFile.is_open() )
113      {
114        inputBitstreamFile.clear();
115
116        streampos location2 = inputBitstreamFile.tellg();
117        inputBitstreamFile.seekg( location );
118
119        do
120        {
121          outputBitstreamFile.put( inputBitstreamFile.get() );
122        } while( inputBitstreamFile.tellg() != location2 );
123      }
124    }
125  }
126
127  inputBitstreamFile.close();
128  outputBitstreamFile.close();
129
130  // write SPS info file
131  if ( m_pchSpsInfoFile )
132  {
133    fstream cSpsInfoFileHandle( m_pchSpsInfoFile, fstream::binary | fstream::out );
134
135    if( cSpsInfoFileHandle.fail() )
136    {
137      fprintf( stderr, "\nfailed writing SPS info file\n" );
138      exit( EXIT_FAILURE );
139    }
140
141    m_cTExtrTop.dumpSpsInfo( cSpsInfoFileHandle );
142
143    cSpsInfoFileHandle.close();
144  }
145  m_cTExtrTop.dumpSpsInfo( std::cout );
146}
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