1 files changed, 405 insertions, 0 deletions
diff --git a/src/plugins/directshow/player/directshowplayercontrol.cpp b/src/plugins/directshow/player/directshowplayercontrol.cpp
new file mode 100644
index 000000000..9035a8b21
--- /dev/null
+++ b/src/plugins/directshow/player/directshowplayercontrol.cpp
@@ -0,0 +1,405 @@
+/****************************************************************************
+**
+** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the Qt Mobility Components.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights.  These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "directshowplayercontrol.h"
+
+#include "directshowplayerservice.h"
+
+#include <QtCore/qcoreapplication.h>
+#include <QtCore/qmath.h>
+
+static int volumeToDecibels(int volume)
+{
+    if (volume == 0) {
+        return -10000;
+    } else if (volume == 100) {
+        return 0;
+#ifdef QT_USE_MATH_H_FLOATS
+    } else if (sizeof(qreal) == sizeof(float)) {
+        return qRound(::log10f(float(volume) / 100) * 5000);
+#endif
+    } else {
+        return qRound(::log10(qreal(volume) / 100) * 5000);
+    }
+}
+
+static int decibelsToVolume(int dB)
+{
+    if (dB == -10000) {
+        return 0;
+    } else if (dB == 0) {
+        return 100;
+    } else {
+        return qRound(100 * qPow(10, qreal(dB) / 5000));
+    }
+}
+
+DirectShowPlayerControl::DirectShowPlayerControl(DirectShowPlayerService *service, QObject *parent)
+    : QMediaPlayerControl(parent)
+    , m_service(service)
+    , m_audio(0)
+    , m_updateProperties(0)
+    , m_state(QMediaPlayer::StoppedState)
+    , m_status(QMediaPlayer::NoMedia)
+    , m_error(QMediaPlayer::NoError)
+    , m_streamTypes(0)
+    , m_muteVolume(-1)
+    , m_position(0)
+    , m_duration(0)
+    , m_playbackRate(0)
+    , m_seekable(false)
+{
+}
+
+DirectShowPlayerControl::~DirectShowPlayerControl()
+{
+    if (m_audio)
+        m_audio->Release();
+}
+
+QMediaPlayer::State DirectShowPlayerControl::state() const
+{
+    return m_state;
+}
+
+QMediaPlayer::MediaStatus DirectShowPlayerControl::mediaStatus() const
+{
+    return m_status;
+}
+
+qint64 DirectShowPlayerControl::duration() const
+{
+    return m_duration;
+}
+
+qint64 DirectShowPlayerControl::position() const
+{
+    return const_cast<qint64 &>(m_position) = m_service->position();
+}
+
+void DirectShowPlayerControl::setPosition(qint64 position)
+{
+    m_service->seek(position);
+}
+
+int DirectShowPlayerControl::volume() const
+{
+    if (m_muteVolume >= 0) {
+        return m_muteVolume;
+    } else if (m_audio) {
+        long dB = 0;
+
+        m_audio->get_Volume(&dB);
+
+        return decibelsToVolume(dB);
+    } else {
+        return 0;
+    }
+}
+
+void DirectShowPlayerControl::setVolume(int volume)
+{
+    int boundedVolume = qBound(0, volume, 100);
+
+    if (m_muteVolume >= 0) {
+        m_muteVolume = boundedVolume;
+
+        emit volumeChanged(m_muteVolume);
+    } else if (m_audio) {
+        m_audio->put_Volume(volumeToDecibels(volume));
+
+        emit volumeChanged(boundedVolume);
+    }
+}
+
+bool DirectShowPlayerControl::isMuted() const
+{
+    return m_muteVolume >= 0;
+}
+
+void DirectShowPlayerControl::setMuted(bool muted)
+{
+    if (muted && m_muteVolume < 0) {
+        if (m_audio) {
+            long dB = 0;
+
+            m_audio->get_Volume(&dB);
+
+            m_muteVolume = decibelsToVolume(dB);
+
+            m_audio->put_Volume(-10000);
+        } else {
+            m_muteVolume = 0;
+        }
+
+        emit mutedChanged(muted);
+    } else if (!muted && m_muteVolume >= 0) {
+        if (m_audio) {
+            m_audio->put_Volume(volumeToDecibels(m_muteVolume));
+        }
+        m_muteVolume = -1;
+
+        emit mutedChanged(muted);
+    }
+}
+
+int DirectShowPlayerControl::bufferStatus() const
+{
+    return m_service->bufferStatus();
+}
+
+bool DirectShowPlayerControl::isAudioAvailable() const
+{
+    return m_streamTypes & DirectShowPlayerService::AudioStream;
+}
+
+bool DirectShowPlayerControl::isVideoAvailable() const
+{
+    return m_streamTypes & DirectShowPlayerService::VideoStream;
+}
+
+bool DirectShowPlayerControl::isSeekable() const
+{
+    return m_seekable;
+}
+
+QMediaTimeRange DirectShowPlayerControl::availablePlaybackRanges() const
+{
+    return m_service->availablePlaybackRanges();
+}
+
+qreal DirectShowPlayerControl::playbackRate() const
+{
+    return m_playbackRate;
+}
+
+void DirectShowPlayerControl::setPlaybackRate(qreal rate)
+{
+    if (m_playbackRate != rate) {
+        m_service->setRate(rate);
+
+        emit playbackRateChanged(m_playbackRate = rate);
+    }
+}
+
+QMediaContent DirectShowPlayerControl::media() const
+{
+    return m_media;
+}
+
+const QIODevice *DirectShowPlayerControl::mediaStream() const
+{
+    return m_stream;
+}
+
+void DirectShowPlayerControl::setMedia(const QMediaContent &media, QIODevice *stream)
+{
+    m_media = media;
+    m_stream = stream;
+
+    m_updateProperties &= PlaybackRateProperty;
+
+    m_service->load(media, stream);
+
+    emit mediaChanged(m_media);
+    emitPropertyChanges();
+}
+
+void DirectShowPlayerControl::play()
+{
+    if (m_status == QMediaPlayer::NoMedia)
+        return;
+    if (m_status == QMediaPlayer::InvalidMedia) {
+        setMedia(m_media, m_stream);
+        if (m_error != QMediaPlayer::NoError)
+            return;
+    }
+    m_service->play();
+    emit stateChanged(m_state = QMediaPlayer::PlayingState);
+}
+
+void DirectShowPlayerControl::pause()
+{
+    if (m_status == QMediaPlayer::NoMedia)
+        return;
+    if (m_status == QMediaPlayer::InvalidMedia) {
+        setMedia(m_media, m_stream);
+        if (m_error != QMediaPlayer::NoError)
+            return;
+    }
+    m_service->pause();
+    emit stateChanged(m_state = QMediaPlayer::PausedState);
+}
+
+void DirectShowPlayerControl::stop()
+{
+    m_service->stop();
+    emit stateChanged(m_state = QMediaPlayer::StoppedState);
+}
+
+void DirectShowPlayerControl::customEvent(QEvent *event)
+{
+    if (event->type() == QEvent::Type(PropertiesChanged)) {
+        emitPropertyChanges();
+
+        event->accept();
+    } else {
+        QMediaPlayerControl::customEvent(event);
+    }
+}
+
+void DirectShowPlayerControl::emitPropertyChanges()
+{
+    int properties = m_updateProperties;
+    m_updateProperties = 0;
+
+    if ((properties & ErrorProperty) && m_error != QMediaPlayer::NoError)
+        emit error(m_error, m_errorString);
+
+    if (properties & PlaybackRateProperty)
+        emit playbackRateChanged(m_playbackRate);
+
+    if (properties & StreamTypesProperty) {
+        emit audioAvailableChanged(m_streamTypes & DirectShowPlayerService::AudioStream);
+        emit videoAvailableChanged(m_streamTypes & DirectShowPlayerService::VideoStream);
+    }
+
+    if (properties & PositionProperty)
+        emit positionChanged(m_position);
+
+    if (properties & DurationProperty)
+        emit durationChanged(m_duration);
+
+    if (properties & SeekableProperty)
+        emit seekableChanged(m_seekable);
+
+    if (properties & StatusProperty)
+        emit mediaStatusChanged(m_status);
+
+    if (properties & StateProperty)
+        emit stateChanged(m_state);
+}
+
+void DirectShowPlayerControl::scheduleUpdate(int properties)
+{
+    if (m_updateProperties == 0)
+        QCoreApplication::postEvent(this, new QEvent(QEvent::Type(PropertiesChanged)));
+
+    m_updateProperties |= properties;
+}
+
+void DirectShowPlayerControl::updateState(QMediaPlayer::State state)
+{
+    if (m_state != state) {
+        m_state = state;
+
+        scheduleUpdate(StateProperty);
+    }
+}
+
+void DirectShowPlayerControl::updateStatus(QMediaPlayer::MediaStatus status)
+{
+    if (m_status != status) {
+        m_status = status;
+
+        scheduleUpdate(StatusProperty);
+    }
+}
+
+void DirectShowPlayerControl::updateMediaInfo(qint64 duration, int streamTypes, bool seekable)
+{
+    int properties = 0;
+
+    if (m_duration != duration) {
+        m_duration = duration;
+
+        properties |= DurationProperty;
+    }
+    if (m_streamTypes != streamTypes) {
+        m_streamTypes = streamTypes;
+
+        properties |= StreamTypesProperty;
+    }
+
+    if (m_seekable != seekable) {
+        m_seekable = seekable;
+
+        properties |= SeekableProperty;
+    }
+
+    if (properties != 0)
+        scheduleUpdate(properties);
+}
+
+void DirectShowPlayerControl::updatePlaybackRate(qreal rate)
+{
+    if (m_playbackRate != rate) {
+        m_playbackRate = rate;
+
+        scheduleUpdate(PlaybackRateProperty);
+    }
+}
+
+void DirectShowPlayerControl::updateAudioOutput(IBaseFilter *filter)
+{
+    if (m_audio)
+        m_audio->Release();
+
+    m_audio = com_cast<IBasicAudio>(filter, IID_IBasicAudio);
+}
+
+void DirectShowPlayerControl::updateError(QMediaPlayer::Error error, const QString &errorString)
+{
+    m_error = error;
+    m_errorString = errorString;
+
+    if (m_error != QMediaPlayer::NoError)
+        scheduleUpdate(ErrorProperty);
+}
+
+void DirectShowPlayerControl::updatePosition(qint64 position)
+{
+    if (m_position != position) {
+        m_position = position;
+
+        scheduleUpdate(PositionProperty);
+    }
+}