animationaudionode.cxx

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#include <sal/config.h>
 
#include <com/sun/star/lang/NoSupportException.hpp>
 
#include <eventqueue.hxx>
#include "animationaudionode.hxx"
#include <delayevent.hxx>
#include <utility>
 
using namespace com::sun::star;
 
namespace slideshow::internal {
 
AnimationAudioNode::AnimationAudioNode(
    const uno::Reference< animations::XAnimationNode >& xNode,
    const BaseContainerNodeSharedPtr&                   rParent,
    const NodeContext&                                  rContext )
    : BaseNode( xNode, rParent, rContext ),
      mxAudioNode( xNode, uno::UNO_QUERY_THROW ),
      maSoundURL(),
      mpPlayer()
{
    mxAudioNode->getSource() >>= maSoundURL;
 
    OSL_ENSURE( !maSoundURL.isEmpty(),
                "could not extract sound source URL/empty URL string" );
 
    ENSURE_OR_THROW( getContext().mxComponentContext.is(),
                      "Invalid component context" );
}
 
void AnimationAudioNode::dispose()
{
    resetPlayer();
    mxAudioNode.clear();
    BaseNode::dispose();
}
 
void AnimationAudioNode::activate_st()
{
    createPlayer();
 
    AnimationEventHandlerSharedPtr aHandler(
        std::dynamic_pointer_cast<AnimationEventHandler>( getSelf() ) );
    OSL_ENSURE( aHandler,
                "could not cast self to AnimationEventHandler?" );
    getContext().mrEventMultiplexer.addCommandStopAudioHandler( aHandler );
 
    if (mpPlayer && mpPlayer->startPlayback())
    {
        // TODO(F2): Handle end time attribute, too
        if( getXAnimationNode()->getDuration().hasValue() )
        {
            scheduleDeactivationEvent();
        }
        else
        {
            // no node duration. Take inherent media time. We have to recheck
            // if the player is playing in case the duration isn't accurate
            // or the progress fall behind.
            auto self(getSelf());
            scheduleDeactivationEvent(
                makeDelay( [this] () { this->checkPlayingStatus(); },
                           mpPlayer->getDuration(),
                           "AnimationAudioNode::check if still playing with delay") );
        }
    }
    else
    {
        // deactivate ASAP:
        auto self(getSelf());
        scheduleDeactivationEvent(
            makeEvent( [self] () { self->deactivate(); },
                                    "AnimationAudioNode::deactivate without delay") );
    }
}
 
// TODO(F2): generate deactivation event, when sound
// is over
 
namespace {
 
// libc++ and MSVC std::bind doesn't cut it here, and it's not possible to use
// a lambda because the preprocessor thinks that comma in capture list
// separates macro parameters
struct NotifyAudioStopped
{
    EventMultiplexer & m_rEventMultiplexer;
    ::std::shared_ptr<BaseNode> m_pSelf;
    NotifyAudioStopped(EventMultiplexer & rEventMultiplexer,
            ::std::shared_ptr<BaseNode> pSelf)
        : m_rEventMultiplexer(rEventMultiplexer), m_pSelf(std::move(pSelf)) { }
 
    void operator()()
    {
        m_rEventMultiplexer.notifyAudioStopped(m_pSelf);
    }
};
 
}
 
void AnimationAudioNode::deactivate_st( NodeState /*eDestState*/ )
{
    AnimationEventHandlerSharedPtr aHandler(
        std::dynamic_pointer_cast<AnimationEventHandler>( getSelf() ) );
    OSL_ENSURE( aHandler,
                "could not cast self to AnimationEventHandler?" );
    getContext().mrEventMultiplexer.removeCommandStopAudioHandler( aHandler );
 
    // force-end sound
    if (mpPlayer)
    {
        mpPlayer->stopPlayback();
        resetPlayer();
    }
 
    // notify _after_ state change:
    getContext().mrEventQueue.addEvent(
        makeEvent( NotifyAudioStopped(getContext().mrEventMultiplexer, getSelf()),
                   "AnimationAudioNode::notifyAudioStopped") );
}
 
bool AnimationAudioNode::hasPendingAnimation() const
{
    // force slide to use the animation framework
    // (otherwise, a single sound on the slide would
    // not be played).
    return true;
}
 
void AnimationAudioNode::createPlayer() const
{
    if (mpPlayer)
        return;
 
    try
    {
        mpPlayer = SoundPlayer::create( getContext().mrEventMultiplexer,
                                        maSoundURL,
                                        getContext().mxComponentContext,
                                        getContext().mrMediaFileManager);
    }
    catch( lang::NoSupportException& )
    {
        // catch possible exceptions from SoundPlayer,
        // since being not able to playback the sound
        // is not a hard error here (remainder of the
        // animations should still work).
    }
}
 
void AnimationAudioNode::resetPlayer() const
{
    if (mpPlayer)
    {
        mpPlayer->stopPlayback();
        mpPlayer->dispose();
        mpPlayer.reset();
    }
}
 
bool AnimationAudioNode::handleAnimationEvent(
    const AnimationNodeSharedPtr& /*rNode*/ )
{
    // TODO(F2): for now we support only STOPAUDIO events.
    deactivate();
    return true;
}
 
void AnimationAudioNode::checkPlayingStatus()
{
    auto self(getSelf());
    double nDuration = mpPlayer->getDuration();
    if (!mpPlayer->isPlaying() || nDuration < 0.0)
        nDuration = 0.0;
 
    scheduleDeactivationEvent(
        makeDelay( [self] () { self->deactivate(); },
            nDuration,
            "AnimationAudioNode::deactivate with delay") );
}
 
} // namespace slideshow::internal
 
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