371046c6a3
some of them have no copyright header Change-Id: I9c2c0c859dabe231cb29af29290847e7b4aa46a3
122 lines
3.6 KiB
C++
122 lines
3.6 KiB
C++
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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#include <boost/bind.hpp>
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#include <iostream>
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#include <osl/conditn.hxx>
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#include <vcl/graph.hxx>
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#include <vcl/bmpacc.hxx>
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#include <vcl/pngread.hxx>
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#include <avmedia/mediawindow.hxx>
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#include <unotools/localfilehelper.hxx>
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#include <unotools/tempfile.hxx>
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#include <unotools/ucbstreamhelper.hxx>
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#include <tools/stream.hxx>
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#include <cppuhelper/supportsservice.hxx>
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#include "vlcframegrabber.hxx"
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#include "vlcplayer.hxx"
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#include "wrapper/Player.hxx"
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#include "wrapper/EventManager.hxx"
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using namespace ::com::sun::star;
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namespace avmedia {
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namespace vlc {
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namespace
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{
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const ::rtl::OUString AVMEDIA_VLC_GRABBER_IMPLEMENTATIONNAME = "com.sun.star.comp.avmedia.VLCFrameGrabber_VLC";
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const ::rtl::OUString AVMEDIA_VLC_GRABBER_SERVICENAME = "com.sun.star.media.VLCFrameGrabber_VLC";
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const int MSEC_IN_SEC = 1000;
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const char * const VLC_ARGS[] = {
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"-Vdummy",
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"--demux",
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"ffmpeg",
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"--snapshot-format=png",
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"--ffmpeg-threads", /* Is deprecated in 2.1.0 */
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"--verbose=-1",
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"--no-audio"
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};
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}
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VLCFrameGrabber::VLCFrameGrabber( wrapper::EventHandler& eh, const rtl::OUString& url )
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: FrameGrabber_BASE()
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, mInstance( sizeof( VLC_ARGS ) / sizeof( VLC_ARGS[0] ), VLC_ARGS )
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, mMedia( url, mInstance )
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, mPlayer( mMedia )
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, mEventHandler( eh )
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{
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}
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::uno::Reference< css::graphic::XGraphic > SAL_CALL VLCFrameGrabber::grabFrame( double fMediaTime )
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throw ( ::com::sun::star::uno::RuntimeException, std::exception )
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{
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osl::Condition condition;
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const rtl::OUString& fileName = utl::TempFile::CreateTempName();
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{
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wrapper::EventManager manager( mPlayer, mEventHandler );
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manager.onPaused(boost::bind(&osl::Condition::set, &condition));
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if ( !mPlayer.play() )
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{
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SAL_WARN("avmedia", "Couldn't play when trying to grab frame");
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return ::uno::Reference< css::graphic::XGraphic >();
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}
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mPlayer.setTime( ( fMediaTime > 0 ? fMediaTime : 0 ) * MSEC_IN_SEC );
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mPlayer.pause();
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const TimeValue timeout = {2, 0};
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condition.wait(&timeout);
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if ( !mPlayer.hasVout() )
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{
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SAL_WARN("avmedia", "Couldn't grab frame");
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manager.onPaused();
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return ::uno::Reference< css::graphic::XGraphic >();
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}
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mPlayer.takeSnapshot( fileName );
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mPlayer.stop();
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manager.onPaused();
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}
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rtl::OUString url;
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utl::LocalFileHelper::ConvertPhysicalNameToURL( fileName, url );
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boost::shared_ptr<SvStream> stream( utl::UcbStreamHelper::CreateStream( url,
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STREAM_STD_READ ) );
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vcl::PNGReader reader( *stream );
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const BitmapEx& bitmap = reader.Read();
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return Graphic( bitmap ).GetXGraphic();
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}
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::rtl::OUString SAL_CALL VLCFrameGrabber::getImplementationName() throw ( ::com::sun::star::uno::RuntimeException, std::exception )
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{
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return AVMEDIA_VLC_GRABBER_IMPLEMENTATIONNAME;
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}
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sal_Bool SAL_CALL VLCFrameGrabber::supportsService( const ::rtl::OUString& serviceName )
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throw ( ::com::sun::star::uno::RuntimeException, std::exception )
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{
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return cppu::supportsService(this, serviceName);
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}
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::uno::Sequence< ::rtl::OUString > SAL_CALL VLCFrameGrabber::getSupportedServiceNames()
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throw ( ::com::sun::star::uno::RuntimeException, std::exception )
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{
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::uno::Sequence< OUString > aRet(1);
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aRet[0] = AVMEDIA_VLC_GRABBER_SERVICENAME;
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return aRet;
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}
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}
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}
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/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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