Commit a50130fe authored by Hugo Beauzee-Luyssen's avatar Hugo Beauzee-Luyssen

Adding a VideoClipWorkflow class

parent ec9dcbc6
/*****************************************************************************
* VideoClipWorkflow.cpp : Clip workflow. Will extract a single frame from a VLCMedia
*****************************************************************************
* Copyright (C) 2008-2009 the VLMC team
*
* Authors: Hugo Beauzee-Luyssen <hugo@vlmc.org>
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
*****************************************************************************/
#include "VideoClipWorkflow.h"
VideoClipWorkflow::VideoClipWorkflow( Clip* clip ) : ClipWorkflow( clip )
{
}
void* VideoClipWorkflow::getLockCallback()
{
return reinterpret_cast<void*>(&VideoClipWorkflow::lock);
}
void* VideoClipWorkflow::getUnlockCallback()
{
return reinterpret_cast<void*>( &VideoClipWorkflow::unlock );
}
void VideoClipWorkflow::lock( VideoClipWorkflow* cw, void** pp_ret, int size )
{
Q_UNUSED( size );
cw->m_renderLock->lock();
*pp_ret = cw->m_buffer;
// qDebug() << '[' << (void*)cw << "] ClipWorkflow::lock";
}
void VideoClipWorkflow::unlock( VideoClipWorkflow* cw, void* buffer, int width, int height, int bpp, int size )
{
Q_UNUSED( buffer );
Q_UNUSED( width );
Q_UNUSED( height );
Q_UNUSED( bpp );
Q_UNUSED( size );
cw->m_renderLock->unlock();
cw->m_stateLock->lockForWrite();
if ( cw->m_state == Rendering )
{
QMutexLocker lock( cw->m_condMutex );
cw->m_state = Sleeping;
cw->m_stateLock->unlock();
{
QMutexLocker lock2( cw->m_renderWaitCond->getMutex() );
cw->m_renderWaitCond->wake();
}
cw->emit renderComplete( cw );
// qDebug() << "Emmiting render completed";
// qDebug() << "Entering cond wait";
cw->m_waitCond->wait( cw->m_condMutex );
// qDebug() << "Leaving condwait";
cw->m_stateLock->lockForWrite();
if ( cw->m_state == Sleeping )
cw->m_state = Rendering;
cw->m_stateLock->unlock();
}
else
cw->m_stateLock->unlock();
// qDebug() << '[' << (void*)cw << "] ClipWorkflow::unlock";
cw->checkStateChange();
}
/*****************************************************************************
* VideoClipWorkflow.h : Clip workflow. Will extract a single frame from a VLCMedia
*****************************************************************************
* Copyright (C) 2008-2009 the VLMC team
*
* Authors: Hugo Beauzee-Luyssen <hugo@vlmc.org>
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
*****************************************************************************/
#ifndef VIDEOCLIPWORKFLOW_H
#define VIDEOCLIPWORKFLOW_H
#include "ClipWorkflow.h"
#include "Clip.h"
class VideoClipWorkflow : public ClipWorkflow
{
public:
VideoClipWorkflow( Clip* clip );
void* getLockCallback();
void* getUnlockCallback();
private:
static void lock( VideoClipWorkflow* clipWorkflow, void** pp_ret, int size );
static void unlock( VideoClipWorkflow* clipWorkflow, void* buffer, int width, int height, int bpp, int size );
};
#endif // VIDEOCLIPWORKFLOW_H
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