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 <canvas/debug.hxx>
  22 #include <tools/diagnose_ex.h>
  23 #include <canvas/verbosetrace.hxx>
  24
  25 #include <comphelper/anytostring.hxx>
  26 #include <cppuhelper/exc_hlp.hxx>
  27
  28 #include <com/sun/star/lang/XMultiComponentFactory.hpp>
  29 #include <com/sun/star/lang/NoSupportException.hpp>
  30 #include <com/sun/star/lang/XComponent.hpp>
  31
  32 #include <tools/urlobj.hxx>
  33
  34 #include <avmedia/mediawindow.hxx>
  35
  36 #include "soundplayer.hxx"
  37
  38 #include <algorithm>
  39
  40 using namespace ::com::sun::star;
  41
  42
  43 namespace slideshow
  44 {
  45     namespace internal
  46     {
  47         // TODO(Q3): Move the whole SoundPlayer class to avmedia.
  48
  49         boost::shared_ptr<SoundPlayer> SoundPlayer::create(
  50             EventMultiplexer & rEventMultiplexer,
  51             const OUString& rSoundURL,
  52             const uno::Reference< uno::XComponentContext>&  rComponentContext )
  53         {
  54             boost::shared_ptr<SoundPlayer> pPlayer(
  55                 new SoundPlayer( rEventMultiplexer,
  56                                  rSoundURL,
  57                                  rComponentContext ) );
  58             rEventMultiplexer.addPauseHandler( pPlayer );
  59             pPlayer->mThis = pPlayer;
  60             return pPlayer;
  61         }
  62
  63         bool SoundPlayer::handlePause( bool bPauseShow )
  64         {
  65             return bPauseShow ? stopPlayback() : startPlayback();
  66         }
  67
  68         void SoundPlayer::dispose()
  69         {
  70             if( mThis )
  71             {
  72                 mrEventMultiplexer.removePauseHandler( mThis );
  73                 mThis.reset();
  74             }
  75
  76             if( mxPlayer.is() )
  77             {
  78                 mxPlayer->stop();
  79                 uno::Reference<lang::XComponent> xComponent(
  80                     mxPlayer, uno::UNO_QUERY );
  81                 if( xComponent.is() )
  82                     xComponent->dispose();
  83                 mxPlayer.clear();
  84             }
  85         }
  86
  87         SoundPlayer::SoundPlayer(
  88             EventMultiplexer & rEventMultiplexer,
  89             const OUString& rSoundURL,
  90             const uno::Reference< uno::XComponentContext>&  rComponentContext )
  91             : mrEventMultiplexer(rEventMultiplexer),
  92               mThis(),
  93               mxPlayer()
  94         {
  95             ENSURE_OR_THROW( rComponentContext.is(),
  96                               "SoundPlayer::SoundPlayer(): Invalid component context" );
  97
  98             try
  99             {
 100                 const INetURLObject aURL( rSoundURL );
 101                 mxPlayer.set( avmedia::MediaWindow::createPlayer(
 102                                 aURL.GetMainURL( INetURLObject::DECODE_UNAMBIGUOUS ), ""/*TODO!*/ ),
 103                                 uno::UNO_QUERY);
 104             }
 105             catch( uno::RuntimeException& )
 106             {
 107                 throw;
 108             }
 109             catch( uno::Exception& )
 110             {
 111             }
 112
 113             if( !mxPlayer.is() )
 114                 throw lang::NoSupportException(
 115                     "No sound support for " + rSoundURL );
 116         }
 117
 118         SoundPlayer::~SoundPlayer()
 119         {
 120             try
 121             {
 122                 dispose();
 123             }
 124             catch (uno::Exception &) {
 125                 OSL_FAIL( OUStringToOString(
 126                                 comphelper::anyToString(
 127                                     cppu::getCaughtException() ),
 128                                 RTL_TEXTENCODING_UTF8 ).getStr() );
 129             }
 130         }
 131
 132         double SoundPlayer::getDuration() const
 133         {
 134             if( !mxPlayer.is() )
 135                 return 0.0;
 136
 137             const double nDuration( mxPlayer->getDuration() );
 138             if( mxPlayer->isPlaying() )
 139                 return ::std::max( 0.0,
 140                                    nDuration - mxPlayer->getMediaTime() );
 141             else
 142                 return nDuration;
 143         }
 144
 145         bool SoundPlayer::startPlayback()
 146         {
 147             if( !mxPlayer.is() )
 148                 return false;
 149
 150             if( mxPlayer->isPlaying() )
 151                 mxPlayer->stop();
 152
 153             mxPlayer->start();
 154             return true;
 155         }
 156
 157         bool SoundPlayer::stopPlayback()
 158         {
 159             if( mxPlayer.is() )
 160                 mxPlayer->stop();
 161
 162             return true;
 163         }
 164
 165         void SoundPlayer::setPlaybackLoop( bool bLoop )
 166         {
 167             if( mxPlayer.is() )
 168                 mxPlayer->setPlaybackLoop( bLoop );
 169         }
 170     }
 171 }
 172
 173 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */