MainWorkflow.cpp 2.79 KB
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/*****************************************************************************
 * MainWorkflow.cpp : Will query all of the track workflows to render the final
 *                    image
 *****************************************************************************
 * 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 <QtDebug>

#include "MainWorkflow.h"

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MainWorkflow::MainWorkflow() : m_renderStarted( false )
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{
    m_tracks = new TrackWorkflow*[NB_TRACKS];
    for (unsigned int i = 0; i < NB_TRACKS; ++i)
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    {
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        m_tracks[i] = new TrackWorkflow;
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        connect( m_tracks[i], SIGNAL( trackEndReached() ), this, SLOT( __endReached() ) );
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    }
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}

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void    MainWorkflow::addClip( Clip* clip, unsigned int trackId, qint64 start )
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{
    Q_ASSERT_X( trackId < NB_TRACKS, "MainWorkflow::addClip",
                "The specified trackId isn't valid, for it's higher than the number of tracks");

    qDebug() << "MainWorkflow: Adding clip" << clip->getUuid() << "to track" << trackId;
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    m_tracks[trackId]->addClip( clip, start );
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}
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void    MainWorkflow::startRender()
{
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    m_renderStarted = true;
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    m_currentFrame = 0;
    emit frameChanged( 0 );
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    m_length = m_tracks[0]->getLength();
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}

unsigned char*    MainWorkflow::getOutput()
{
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    unsigned char* ret = m_tracks[0]->getOutput( m_currentFrame );
    ++m_currentFrame;
    emit frameChanged( m_currentFrame );
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    emit positionChanged( (float)m_currentFrame / (float)m_length );
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    return ret;
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}
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void        MainWorkflow::setPosition( float pos )
{
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    if ( m_renderStarted == false )
        return ;
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    qint64  frame = (float)m_length * pos;
    m_currentFrame = frame;
    emit frameChanged( frame );
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    //Do not emit a signal for the RenderWidget, since it's the one that triggered that call...
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}

qint64      MainWorkflow::getLength() const
{
    return m_length;
}
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void        MainWorkflow::__endReached()
{
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    emit mainWorkflowEndReached();
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    m_renderStarted = false;
    m_currentFrame = 0;
    emit frameChanged( 0 );
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}