KisPlaybackEngineMLT::Private Struct Reference

Public Member Functions
KisCanvas2 *	activeCanvas ()
PlaybackMode	activePlaybackMode ()
QSharedPointer< Mlt::Producer >	activeProducer ()
void	cleanupConsumers ()
bool	dropFrames () const
void	initializeConsumers ()
	Private (KisPlaybackEngineMLT *p_self)
void	pushAudio (int frame)
	~Private ()

Public Attributes
QMap< KisCanvas2 *, QSharedPointer< Mlt::Producer > >	canvasProducers
FrameRenderingStats	frameStats
FrameWaitingInterface	frameWaitingInterface
bool	mute
double	playbackSpeed
QScopedPointer< Mlt::Profile >	profile
QScopedPointer< Mlt::Consumer >	pullConsumer
QScopedPointer< Mlt::Event >	pullConsumerConnection
QScopedPointer< Mlt::PushConsumer >	pushConsumer
QScopedPointer< Mlt::Repository >	repository
QScopedPointer< KisSignalCompressorWithParam< int > >	sigPushAudioCompressor
QScopedPointer< KisSignalCompressorWithParam< double > >	sigSetPlaybackSpeed

Private Attributes
KisPlaybackEngineMLT *	m_self

Detailed Description

Definition at line 148 of file KisPlaybackEngineMLT.cpp.

Constructor & Destructor Documentation

Private()

KisPlaybackEngineMLT::Private::Private ( KisPlaybackEngineMLT * p_self )

inline

Definition at line 150 of file KisPlaybackEngineMLT.cpp.

        : m_self(p_self)
        , playbackSpeed(1.0)
        , mute(false)
    {
        qDebug() << "Initializing MLT Animation Playback Engine. MLT ver: " << QString(mlt_version_get_string());
 
        // Initialize MLT...
        repository.reset(Mlt::Factory::init());
 
#ifdef MLT_LOG_REDIRECTION
        mlt_log_set_level(MLT_LOG_VERBOSE);
        mlt_log_set_callback(&qt_redirection_callback);
#endif /* MLT_LOG_REDIRECTION */
 
        // Register our backend plugin
        registerKritaMLTProducer(repository.data());
 
        profile.reset(new Mlt::Profile());
        profile->set_frame_rate(24, 1);
 
        {
            std::function<void (int)> callback(std::bind(&Private::pushAudio, this, std::placeholders::_1));
            sigPushAudioCompressor.reset(
                        new KisSignalCompressorWithParam<int>(1000 * SCRUB_AUDIO_SECONDS, callback, KisSignalCompressor::FIRST_ACTIVE)
                        );
        }
 
        {
            std::function<void (const double)> callback(std::bind(&KisPlaybackEngineMLT::throttledSetSpeed, m_self, std::placeholders::_1));
            sigSetPlaybackSpeed.reset(
                        new KisSignalCompressorWithParam<double>(100, callback, KisSignalCompressor::POSTPONE)
                        );
        }
 
        initializeConsumers();
    }

References KisSignalCompressor::FIRST_ACTIVE, initializeConsumers(), m_self, KisSignalCompressor::POSTPONE, profile, pushAudio(), registerKritaMLTProducer(), repository, SCRUB_AUDIO_SECONDS, sigPushAudioCompressor, sigSetPlaybackSpeed, KisPlaybackEngineMLT::throttledSetSpeed(), and void().

~Private()

KisPlaybackEngineMLT::Private::~Private ( )

inline

Definition at line 188 of file KisPlaybackEngineMLT.cpp.

               {
        cleanupConsumers();
        repository.reset();
        Mlt::Factory::close();
    }

References cleanupConsumers(), and repository.

Member Function Documentation

activeCanvas()

KisCanvas2 * KisPlaybackEngineMLT::Private::activeCanvas ( )

inline

Definition at line 237 of file KisPlaybackEngineMLT.cpp.

                               {
        return m_self->activeCanvas();
    }

References KisPlaybackEngine::activeCanvas(), and m_self.

activePlaybackMode()

PlaybackMode KisPlaybackEngineMLT::Private::activePlaybackMode ( )

inline

Definition at line 241 of file KisPlaybackEngineMLT.cpp.

                                      {
        KIS_ASSERT_RECOVER_RETURN_VALUE(activeCanvas(), PLAYBACK_PUSH);
        KIS_ASSERT_RECOVER_RETURN_VALUE(activeCanvas()->animationState(), PLAYBACK_PUSH);
        return activeCanvas()->animationState()->playbackState() == PlaybackState::PLAYING ? PLAYBACK_PULL : PLAYBACK_PUSH;
    }

References activeCanvas(), KisCanvas2::animationState(), KIS_ASSERT_RECOVER_RETURN_VALUE, PLAYBACK_PULL, PLAYBACK_PUSH, KisCanvasAnimationState::playbackState(), and PLAYING.

activeProducer()

QSharedPointer< Mlt::Producer > KisPlaybackEngineMLT::Private::activeProducer ( )

inline

Definition at line 247 of file KisPlaybackEngineMLT.cpp.

                                                 {
        KIS_ASSERT_RECOVER_RETURN_VALUE(activeCanvas(), nullptr);
        KIS_ASSERT_RECOVER_RETURN_VALUE(canvasProducers.contains(activeCanvas()), nullptr);
        return canvasProducers[activeCanvas()];
    }

References activeCanvas(), canvasProducers, and KIS_ASSERT_RECOVER_RETURN_VALUE.

cleanupConsumers()

void KisPlaybackEngineMLT::Private::cleanupConsumers ( )

inline

Definition at line 223 of file KisPlaybackEngineMLT.cpp.

                            {
        if (pullConsumer && !pullConsumer->is_stopped()) {
            pullConsumer->stop();
        }
 
        if (pushConsumer && !pushConsumer->is_stopped()) {
            pushConsumer->stop();
        }
 
        pullConsumer.reset();
        pushConsumer.reset();
        pullConsumerConnection.reset();
    }

References pullConsumer, pullConsumerConnection, and pushConsumer.

dropFrames()

bool KisPlaybackEngineMLT::Private::dropFrames ( ) const

inline

Definition at line 253 of file KisPlaybackEngineMLT.cpp.

                            {
        return m_self->dropFrames();
    }

References KisPlaybackEngine::dropFrames(), and m_self.

initializeConsumers()

void KisPlaybackEngineMLT::Private::initializeConsumers ( )

inline

Definition at line 217 of file KisPlaybackEngineMLT.cpp.

                               {
        pushConsumer.reset(new Mlt::PushConsumer(*profile, "sdl2_audio"));
        pullConsumer.reset(new Mlt::Consumer(*profile, "sdl2_audio"));
        pullConsumerConnection.reset(pullConsumer->listen("consumer-frame-show", m_self, (mlt_listener)mltOnConsumerFrameShow));
    }

References m_self, mltOnConsumerFrameShow(), profile, pullConsumer, pullConsumerConnection, and pushConsumer.

pushAudio()

void KisPlaybackEngineMLT::Private::pushAudio ( int frame )

inline

Definition at line 194 of file KisPlaybackEngineMLT.cpp.

                              {
 
        if (pushConsumer->is_stopped() || !m_self->activeCanvas()) {
            return;
        }
 
        QSharedPointer<Mlt::Producer> activeProducer = canvasProducers[m_self->activeCanvas()];
        if (activePlaybackMode() == PLAYBACK_PUSH && activeProducer) {
            const int SCRUB_AUDIO_WINDOW = qMax(1, qRound(profile->frame_rate_num() * SCRUB_AUDIO_SECONDS));
            activeProducer->seek(frame);
            for (int i = 0; i < SCRUB_AUDIO_WINDOW; i++ ) {
                Mlt::Frame* f = activeProducer->get_frame();
                pushConsumer->push(*f);
                delete f;
            }
 
            // It turns out that get_frame actually seeks to the frame too,
            // Not having this last seek will cause unexpected "jumps" at
            // the beginning of playback...
            activeProducer->seek(frame);
        }
    }

References KisPlaybackEngine::activeCanvas(), activePlaybackMode(), activeProducer(), canvasProducers, m_self, PLAYBACK_PUSH, profile, pushConsumer, and SCRUB_AUDIO_SECONDS.

Member Data Documentation

canvasProducers

QMap<KisCanvas2*, QSharedPointer<Mlt::Producer> > KisPlaybackEngineMLT::Private::canvasProducers

Definition at line 272 of file KisPlaybackEngineMLT.cpp.

frameStats

FrameRenderingStats KisPlaybackEngineMLT::Private::frameStats

Definition at line 281 of file KisPlaybackEngineMLT.cpp.

frameWaitingInterface

FrameWaitingInterface KisPlaybackEngineMLT::Private::frameWaitingInterface

Definition at line 280 of file KisPlaybackEngineMLT.cpp.

m_self

KisPlaybackEngineMLT* KisPlaybackEngineMLT::Private::m_self

private

Definition at line 258 of file KisPlaybackEngineMLT.cpp.

mute

bool KisPlaybackEngineMLT::Private::mute

Definition at line 278 of file KisPlaybackEngineMLT.cpp.

playbackSpeed

double KisPlaybackEngineMLT::Private::playbackSpeed

Definition at line 277 of file KisPlaybackEngineMLT.cpp.

profile

QScopedPointer<Mlt::Profile> KisPlaybackEngineMLT::Private::profile

Definition at line 262 of file KisPlaybackEngineMLT.cpp.

pullConsumer

QScopedPointer<Mlt::Consumer> KisPlaybackEngineMLT::Private::pullConsumer

Definition at line 265 of file KisPlaybackEngineMLT.cpp.

pullConsumerConnection

QScopedPointer<Mlt::Event> KisPlaybackEngineMLT::Private::pullConsumerConnection

Definition at line 266 of file KisPlaybackEngineMLT.cpp.

pushConsumer

QScopedPointer<Mlt::PushConsumer> KisPlaybackEngineMLT::Private::pushConsumer

Definition at line 269 of file KisPlaybackEngineMLT.cpp.

repository

QScopedPointer<Mlt::Repository> KisPlaybackEngineMLT::Private::repository

Definition at line 261 of file KisPlaybackEngineMLT.cpp.

sigPushAudioCompressor

QScopedPointer<KisSignalCompressorWithParam<int> > KisPlaybackEngineMLT::Private::sigPushAudioCompressor

Definition at line 274 of file KisPlaybackEngineMLT.cpp.

sigSetPlaybackSpeed

QScopedPointer<KisSignalCompressorWithParam<double> > KisPlaybackEngineMLT::Private::sigSetPlaybackSpeed

Definition at line 275 of file KisPlaybackEngineMLT.cpp.

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The documentation for this struct was generated from the following file:

• libs/ui/KisPlaybackEngineMLT.cpp