slideshow/source/engine/soundplayer.cxx

   1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
   2 /*
   3  * This file is part of the LibreOffice project.
   4  *
   5  * This Source Code Form is subject to the terms of the Mozilla Public
   6  * License, v. 2.0. If a copy of the MPL was not distributed with this
   7  * file, You can obtain one at http://mozilla.org/MPL/2.0/.
   8  *
   9  * This file incorporates work covered by the following license notice:
  10  *
  11  *   Licensed to the Apache Software Foundation (ASF) under one or more
  12  *   contributor license agreements. See the NOTICE file distributed
  13  *   with this work for additional information regarding copyright
  14  *   ownership. The ASF licenses this file to you under the Apache
  15  *   License, Version 2.0 (the "License"); you may not use this file
  16  *   except in compliance with the License. You may obtain a copy of
  17  *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
  18  */
  19
  20
  21 #include <tools/diagnose_ex.h>
  22
  23 #include <comphelper/anytostring.hxx>
  24 #include <cppuhelper/exc_hlp.hxx>
  25
  26 #include <com/sun/star/lang/XMultiComponentFactory.hpp>
  27 #include <com/sun/star/lang/NoSupportException.hpp>
  28 #include <com/sun/star/lang/XComponent.hpp>
  29
  30 #include <tools/urlobj.hxx>
  31
  32 #include <avmedia/mediawindow.hxx>
  33
  34 #include <soundplayer.hxx>
  35
  36 #include <algorithm>
  37
  38 using namespace ::com::sun::star;
  39
  40
  41 namespace slideshow
  42 {
  43     namespace internal
  44     {
  45         // TODO(Q3): Move the whole SoundPlayer class to avmedia.
  46
  47         std::shared_ptr<SoundPlayer> SoundPlayer::create(
  48             EventMultiplexer & rEventMultiplexer,
  49             const OUString& rSoundURL,
  50             const uno::Reference< uno::XComponentContext>&  rComponentContext )
  51         {
  52             std::shared_ptr<SoundPlayer> pPlayer(
  53                 new SoundPlayer( rEventMultiplexer,
  54                                  rSoundURL,
  55                                  rComponentContext ) );
  56             rEventMultiplexer.addPauseHandler( pPlayer );
  57             pPlayer->mThis = pPlayer;
  58             return pPlayer;
  59         }
  60
  61         bool SoundPlayer::handlePause( bool bPauseShow )
  62         {
  63             return bPauseShow ? stopPlayback() : startPlayback();
  64         }
  65
  66         void SoundPlayer::dispose()
  67         {
  68             if( mThis )
  69             {
  70                 mrEventMultiplexer.removePauseHandler( mThis );
  71                 mThis.reset();
  72             }
  73
  74             if( mxPlayer.is() )
  75             {
  76                 mxPlayer->stop();
  77                 uno::Reference<lang::XComponent> xComponent(
  78                     mxPlayer, uno::UNO_QUERY );
  79                 if( xComponent.is() )
  80                     xComponent->dispose();
  81                 mxPlayer.clear();
  82             }
  83         }
  84
  85         SoundPlayer::SoundPlayer(
  86             EventMultiplexer & rEventMultiplexer,
  87             const OUString& rSoundURL,
  88             const uno::Reference< uno::XComponentContext>&  rComponentContext )
  89             : mrEventMultiplexer(rEventMultiplexer),
  90               mThis(),
  91               mxPlayer()
  92         {
  93             ENSURE_OR_THROW( rComponentContext.is(),
  94                               "SoundPlayer::SoundPlayer(): Invalid component context" );
  95
  96             try
  97             {
  98                 const INetURLObject aURL( rSoundURL );
  99                 mxPlayer.set( avmedia::MediaWindow::createPlayer(
 100                                 aURL.GetMainURL( INetURLObject::DecodeMechanism::Unambiguous ), ""/*TODO!*/ ),
 101                                 uno::UNO_QUERY);
 102             }
 103             catch( uno::RuntimeException& )
 104             {
 105                 throw;
 106             }
 107             catch( uno::Exception& )
 108             {
 109             }
 110
 111             if( !mxPlayer.is() )
 112                 throw lang::NoSupportException(
 113                     "No sound support for " + rSoundURL );
 114         }
 115
 116         SoundPlayer::~SoundPlayer()
 117         {
 118             try
 119             {
 120                 dispose();
 121             }
 122             catch (uno::Exception &) {
 123                 SAL_WARN( "slideshow", comphelper::anyToString( cppu::getCaughtException() ) );
 124             }
 125         }
 126
 127         double SoundPlayer::getDuration() const
 128         {
 129             if( !mxPlayer.is() )
 130                 return 0.0;
 131
 132             const double nDuration( mxPlayer->getDuration() );
 133             if( mxPlayer->isPlaying() )
 134                 return ::std::max( 0.0,
 135                                    nDuration - mxPlayer->getMediaTime() );
 136             else
 137                 return nDuration;
 138         }
 139
 140         bool SoundPlayer::startPlayback()
 141         {
 142             if( !mxPlayer.is() )
 143                 return false;
 144
 145             if( mxPlayer->isPlaying() )
 146                 mxPlayer->stop();
 147
 148             mxPlayer->start();
 149             return true;
 150         }
 151
 152         bool SoundPlayer::stopPlayback()
 153         {
 154             if( mxPlayer.is() )
 155                 mxPlayer->stop();
 156
 157             return true;
 158         }
 159
 160         void SoundPlayer::setPlaybackLoop( bool bLoop )
 161         {
 162             if( mxPlayer.is() )
 163                 mxPlayer->setPlaybackLoop( bLoop );
 164         }
 165     }
 166 }
 167
 168 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */