void ocvOpticalFlowApp::loadMovieFile( const fs::path &moviePath )
{
try {
// load up the movie, set it to loop, and begin playing
mMovie = qtime::MovieSurface( moviePath );
mMovie.setLoop();
mMovie.play();
// create a texture for showing some info about the movie
TextLayout infoText;
infoText.clear( ColorA( 0.2f, 0.2f, 0.2f, 0.5f ) );
infoText.setColor( Color::white() );
infoText.addCenteredLine( moviePath.filename().string() );
infoText.addLine( toString( mMovie.getWidth() ) + " x " + toString( mMovie.getHeight() ) + " pixels" );
infoText.addLine( toString( mMovie.getDuration() ) + " seconds" );
infoText.addLine( toString( mMovie.getNumFrames() ) + " frames" );
infoText.addLine( toString( mMovie.getFramerate() ) + " fps" );
infoText.setBorder( 4, 2 );
mInfoTexture = gl::Texture( infoText.render( true ) );
}
catch( ... ) {
console() << "Unable to load the movie." << std::endl;
mMovie.reset();
mInfoTexture.reset();
}
mFrameTexture.reset();
}
void EnhanceApp::keyDown( KeyEvent event )
{
if( event.getChar() == 'f' ) {
setFullScreen( ! isFullScreen() );
}
else if( event.getChar() == 'o' ) {
string moviePath = getOpenFilePath();
if( ! moviePath.empty() )
loadMovieFile( moviePath );
}
// these keys only make sense if there is an active movie
if( mMovie ) {
if( event.getCode() == KeyEvent::KEY_LEFT ) {
mMovie.stepBackward();
}
if( event.getCode() == KeyEvent::KEY_RIGHT ) {
mMovie.stepForward();
}
else if( event.getChar() == 's' ) {
if( mSurface ) {
string savePath = getSaveFilePath();
if( ! savePath.empty() ) {
writeImage( savePath, mSurface );
}
}
}
else if( event.getChar() == 'm' ) {
// jump to the middle frame
mMovie.seekToTime( mMovie.getDuration() / 2 );
}
else if( event.getChar() == ' ' ) {
if( mMovie.isPlaying() )
mMovie.stop();
else
mMovie.play();
}
}
}
void EnhanceApp::loadMovieFile( const string &moviePath )
{
try {
mMovie = qtime::MovieSurface( moviePath );
console() << "Dimensions:" << mMovie.getWidth() << " x " << mMovie.getHeight() << std::endl;
console() << "Duration: " << mMovie.getDuration() << " seconds" << std::endl;
console() << "Frames: " << mMovie.getNumFrames() << std::endl;
console() << "Framerate: " << mMovie.getFramerate() << std::endl;
console() << "Alpha channel: " << mMovie.hasAlpha() << std::endl;
console() << "Has audio: " << mMovie.hasAudio() << " Has visuals: " << mMovie.hasVisuals() << std::endl;
mMovie.setLoop( true, true );
mMovie.setVolume(0);
mMovie.seekToStart();
mMovie.play();
}
catch( ... ) {
console() << "Unable to load the movie." << std::endl;
}
}