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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*
* This file is part of the LibreOffice project.
*
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/.
*
* This file incorporates work covered by the following license notice:
*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed
* with this work for additional information regarding copyright
* ownership. The ASF licenses this file to you under the Apache
* License, Version 2.0 (the "License"); you may not use this file
* except in compliance with the License. You may obtain a copy of
* the License at http://www.apache.org/licenses/LICENSE-2.0 .
*/
#include <chrono>
#include <iostream>
#include <osl/conditn.hxx>
#include <osl/file.hxx>
#include <vcl/graph.hxx>
#include <vcl/bitmapaccess.hxx>
#include <vcl/pngread.hxx>
#include <avmedia/mediawindow.hxx>
#include <unotools/tempfile.hxx>
#include <unotools/ucbstreamhelper.hxx>
#include <tools/stream.hxx>
#include <cppuhelper/supportsservice.hxx>
#include <sal/log.hxx>
#include "vlcframegrabber.hxx"
#include "vlcplayer.hxx"
#include <wrapper/Player.hxx>
#include <wrapper/EventManager.hxx>
using namespace ::com::sun::star;
namespace avmedia::vlc {
namespace
{
const OUString AVMEDIA_VLC_GRABBER_IMPLEMENTATIONNAME = "com.sun.star.comp.avmedia.VLCFrameGrabber_VLC";
const OUString AVMEDIA_VLC_GRABBER_SERVICENAME = "com.sun.star.media.VLCFrameGrabber_VLC";
const int MSEC_IN_SEC = 1000;
const char * const VLC_ARGS[] = {
"-Vdummy",
"--demux",
"ffmpeg",
"--snapshot-format=png",
"--ffmpeg-threads", /* Is deprecated in 2.1.0 */
"--verbose=-1",
"--no-audio"
};
}
VLCFrameGrabber::VLCFrameGrabber( wrapper::EventHandler& eh, const OUString& url )
: FrameGrabber_BASE()
, mInstance( SAL_N_ELEMENTS(VLC_ARGS), VLC_ARGS )
, mMedia( url, mInstance )
, mPlayer( mMedia )
, mEventHandler( eh )
{
}
::uno::Reference< css::graphic::XGraphic > SAL_CALL VLCFrameGrabber::grabFrame( double fMediaTime )
{
osl::Condition condition;
const OUString& fileName = utl::TempFile::CreateTempName();
{
wrapper::EventManager manager( mPlayer, mEventHandler );
manager.onPaused([&condition](){ condition.set(); });
if ( !mPlayer.play() )
{
SAL_WARN("avmedia", "Couldn't play when trying to grab frame");
return ::uno::Reference< css::graphic::XGraphic >();
}
mPlayer.setTime( std::max(fMediaTime, 0.0) * MSEC_IN_SEC );
mPlayer.pause();
condition.wait(std::chrono::seconds(2));
if ( !mPlayer.hasVout() )
{
SAL_WARN("avmedia", "Couldn't grab frame");
manager.onPaused();
return ::uno::Reference< css::graphic::XGraphic >();
}
mPlayer.takeSnapshot( fileName );
mPlayer.stop();
manager.onPaused();
}
OUString url;
osl::FileBase::getFileURLFromSystemPath( fileName, url );
std::shared_ptr<SvStream> stream( utl::UcbStreamHelper::CreateStream( url,
StreamMode::STD_READ ) );
vcl::PNGReader reader( *stream );
const BitmapEx& bitmap = reader.Read();
return Graphic( bitmap ).GetXGraphic();
}
OUString SAL_CALL VLCFrameGrabber::getImplementationName()
{
return AVMEDIA_VLC_GRABBER_IMPLEMENTATIONNAME;
}
sal_Bool SAL_CALL VLCFrameGrabber::supportsService( const OUString& serviceName )
{
return cppu::supportsService(this, serviceName);
}
::uno::Sequence< OUString > SAL_CALL VLCFrameGrabber::getSupportedServiceNames()
{
return { AVMEDIA_VLC_GRABBER_SERVICENAME };
}
}
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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