109 lines
3.0 KiB
C++
109 lines
3.0 KiB
C++
/* This file is a part of plaYUVer project
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* Copyright (C) 2014-2015 by Luis Lucas (luisfrlucas@gmail.com)
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* Joao Carreira (jfmcarreira@gmail.com)
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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/**
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* \file PlaYUVerRawHandler.h
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* \brief Abstract class for stream handling
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*/
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#ifndef __PLAYUVERRAWHANDLER_H__
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#define __PLAYUVERRAWHANDLER_H__
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#include "PlaYUVerDefs.h"
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#include "PlaYUVerStreamHandlerIf.h"
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namespace plaYUVer
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{
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/**
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* \class PlaYUVerRawHandler
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* \ingroup PlaYUVerLib PlaYUVerLib_Stream
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* \brief Class to handle raw video format
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*/
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class PlaYUVerRawHandler: public PlaYUVerStreamHandlerIf
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{
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REGISTER_STREAM_HANDLER( PlaYUVerRawHandler )
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private:
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FILE* m_pFile; /**< The input file pointer >*/
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public:
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PlaYUVerRawHandler() {}
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~PlaYUVerRawHandler() {}
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Bool openHandler( std::string strFilename, Bool bInput )
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{
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m_bIsInput = bInput;
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m_pFile = NULL;
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m_pFile = fopen( strFilename.c_str(), bInput ? "rb" : "wb" );
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if( m_pFile == NULL )
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{
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return false;
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}
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m_strFormatName = "YUV";
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m_strCodecName = "Raw Video";
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return true;
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}
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Void closeHandler()
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{
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if( m_pFile )
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fclose( m_pFile );
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}
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UInt64 calculateFrameNumber()
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{
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if( !m_pFile || m_uiNBytesPerFrame == 0 )
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return 0;
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fseek( m_pFile, 0, SEEK_END );
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UInt64 fileSize = ftell( m_pFile );
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fseek( m_pFile, 0, SEEK_SET );
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return ( fileSize / m_uiNBytesPerFrame );
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}
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Bool seek( UInt64 iFrameNum )
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{
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if( m_bIsInput && m_pFile )
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{
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fseek( m_pFile, iFrameNum >= 0 ? iFrameNum * m_uiNBytesPerFrame : 0, SEEK_SET );
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return true;
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}
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return false;
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}
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Bool read( PlaYUVerFrame* pcFrame )
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{
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UInt64 processed_bytes = fread( m_pStreamBuffer, sizeof( Byte ), m_uiNBytesPerFrame, m_pFile );
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if( processed_bytes != m_uiNBytesPerFrame )
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return false;
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pcFrame->frameFromBuffer( m_pStreamBuffer );
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return true;
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}
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Bool write( PlaYUVerFrame* pcFrame )
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{
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pcFrame->frameToBuffer( m_pStreamBuffer );
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UInt64 processed_bytes = fwrite( m_pStreamBuffer, sizeof( Byte ), m_uiNBytesPerFrame, m_pFile );
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if( processed_bytes != m_uiNBytesPerFrame )
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return false;
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return true;
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}
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};
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} // NAMESPACE
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#endif // __PLAYUVERRAWHANDLER_H__
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