Initial copy of QtMultimediaKit.
Comes from original repo, with SHA1: 2c82d5611655e5967f5c5095af50c0991c4378b2
This commit is contained in:
Michael Goddard
405
src/plugins/directshow/player/directshowplayercontrol.cpp
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405
src/plugins/directshow/player/directshowplayercontrol.cpp
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/****************************************************************************
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**
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** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
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** All rights reserved.
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** Contact: Nokia Corporation (qt-info@nokia.com)
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**
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** This file is part of the Qt Mobility Components.
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**
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** $QT_BEGIN_LICENSE:LGPL$
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** No Commercial Usage
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** This file contains pre-release code and may not be distributed.
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** You may use this file in accordance with the terms and conditions
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** contained in the Technology Preview License Agreement accompanying
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** this package.
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**
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** GNU Lesser General Public License Usage
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** Alternatively, this file may be used under the terms of the GNU Lesser
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** General Public License version 2.1 as published by the Free Software
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** Foundation and appearing in the file LICENSE.LGPL included in the
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** packaging of this file. Please review the following information to
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** ensure the GNU Lesser General Public License version 2.1 requirements
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** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
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**
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** In addition, as a special exception, Nokia gives you certain additional
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** rights. These rights are described in the Nokia Qt LGPL Exception
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** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
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**
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** If you have questions regarding the use of this file, please contact
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** Nokia at qt-info@nokia.com.
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**
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**
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**
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**
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**
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**
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**
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**
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** $QT_END_LICENSE$
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**
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****************************************************************************/
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#include "directshowplayercontrol.h"
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#include "directshowplayerservice.h"
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#include <QtCore/qcoreapplication.h>
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#include <QtCore/qmath.h>
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static int volumeToDecibels(int volume)
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{
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if (volume == 0) {
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return -10000;
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} else if (volume == 100) {
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return 0;
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#ifdef QT_USE_MATH_H_FLOATS
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} else if (sizeof(qreal) == sizeof(float)) {
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return qRound(::log10f(float(volume) / 100) * 5000);
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#endif
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} else {
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return qRound(::log10(qreal(volume) / 100) * 5000);
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}
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}
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static int decibelsToVolume(int dB)
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{
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if (dB == -10000) {
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return 0;
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} else if (dB == 0) {
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return 100;
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} else {
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return qRound(100 * qPow(10, qreal(dB) / 5000));
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}
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}
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DirectShowPlayerControl::DirectShowPlayerControl(DirectShowPlayerService *service, QObject *parent)
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: QMediaPlayerControl(parent)
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, m_service(service)
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, m_audio(0)
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, m_updateProperties(0)
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, m_state(QMediaPlayer::StoppedState)
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, m_status(QMediaPlayer::NoMedia)
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, m_error(QMediaPlayer::NoError)
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, m_streamTypes(0)
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, m_muteVolume(-1)
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, m_position(0)
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, m_duration(0)
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, m_playbackRate(0)
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, m_seekable(false)
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{
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}
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DirectShowPlayerControl::~DirectShowPlayerControl()
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{
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if (m_audio)
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m_audio->Release();
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}
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QMediaPlayer::State DirectShowPlayerControl::state() const
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{
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return m_state;
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}
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QMediaPlayer::MediaStatus DirectShowPlayerControl::mediaStatus() const
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{
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return m_status;
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}
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qint64 DirectShowPlayerControl::duration() const
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{
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return m_duration;
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}
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qint64 DirectShowPlayerControl::position() const
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{
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return const_cast<qint64 &>(m_position) = m_service->position();
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}
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void DirectShowPlayerControl::setPosition(qint64 position)
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{
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m_service->seek(position);
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}
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int DirectShowPlayerControl::volume() const
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{
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if (m_muteVolume >= 0) {
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return m_muteVolume;
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} else if (m_audio) {
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long dB = 0;
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m_audio->get_Volume(&dB);
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return decibelsToVolume(dB);
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} else {
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return 0;
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}
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}
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void DirectShowPlayerControl::setVolume(int volume)
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{
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int boundedVolume = qBound(0, volume, 100);
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if (m_muteVolume >= 0) {
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m_muteVolume = boundedVolume;
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emit volumeChanged(m_muteVolume);
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} else if (m_audio) {
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m_audio->put_Volume(volumeToDecibels(volume));
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emit volumeChanged(boundedVolume);
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}
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}
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bool DirectShowPlayerControl::isMuted() const
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{
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return m_muteVolume >= 0;
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}
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void DirectShowPlayerControl::setMuted(bool muted)
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{
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if (muted && m_muteVolume < 0) {
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if (m_audio) {
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long dB = 0;
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m_audio->get_Volume(&dB);
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m_muteVolume = decibelsToVolume(dB);
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m_audio->put_Volume(-10000);
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} else {
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m_muteVolume = 0;
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}
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emit mutedChanged(muted);
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} else if (!muted && m_muteVolume >= 0) {
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if (m_audio) {
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m_audio->put_Volume(volumeToDecibels(m_muteVolume));
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}
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m_muteVolume = -1;
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emit mutedChanged(muted);
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}
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}
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int DirectShowPlayerControl::bufferStatus() const
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{
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return m_service->bufferStatus();
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}
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bool DirectShowPlayerControl::isAudioAvailable() const
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{
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return m_streamTypes & DirectShowPlayerService::AudioStream;
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}
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bool DirectShowPlayerControl::isVideoAvailable() const
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{
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return m_streamTypes & DirectShowPlayerService::VideoStream;
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}
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bool DirectShowPlayerControl::isSeekable() const
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{
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return m_seekable;
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}
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QMediaTimeRange DirectShowPlayerControl::availablePlaybackRanges() const
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{
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return m_service->availablePlaybackRanges();
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}
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qreal DirectShowPlayerControl::playbackRate() const
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{
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return m_playbackRate;
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}
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void DirectShowPlayerControl::setPlaybackRate(qreal rate)
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{
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if (m_playbackRate != rate) {
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m_service->setRate(rate);
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emit playbackRateChanged(m_playbackRate = rate);
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}
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}
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QMediaContent DirectShowPlayerControl::media() const
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{
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return m_media;
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}
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const QIODevice *DirectShowPlayerControl::mediaStream() const
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{
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return m_stream;
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}
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void DirectShowPlayerControl::setMedia(const QMediaContent &media, QIODevice *stream)
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{
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m_media = media;
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m_stream = stream;
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m_updateProperties &= PlaybackRateProperty;
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m_service->load(media, stream);
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emit mediaChanged(m_media);
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emitPropertyChanges();
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}
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void DirectShowPlayerControl::play()
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{
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if (m_status == QMediaPlayer::NoMedia)
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return;
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if (m_status == QMediaPlayer::InvalidMedia) {
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setMedia(m_media, m_stream);
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if (m_error != QMediaPlayer::NoError)
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return;
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}
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m_service->play();
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emit stateChanged(m_state = QMediaPlayer::PlayingState);
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}
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void DirectShowPlayerControl::pause()
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{
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if (m_status == QMediaPlayer::NoMedia)
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return;
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if (m_status == QMediaPlayer::InvalidMedia) {
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setMedia(m_media, m_stream);
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if (m_error != QMediaPlayer::NoError)
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return;
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}
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m_service->pause();
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emit stateChanged(m_state = QMediaPlayer::PausedState);
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}
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void DirectShowPlayerControl::stop()
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{
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m_service->stop();
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emit stateChanged(m_state = QMediaPlayer::StoppedState);
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}
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void DirectShowPlayerControl::customEvent(QEvent *event)
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{
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if (event->type() == QEvent::Type(PropertiesChanged)) {
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emitPropertyChanges();
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event->accept();
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} else {
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QMediaPlayerControl::customEvent(event);
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}
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}
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void DirectShowPlayerControl::emitPropertyChanges()
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{
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int properties = m_updateProperties;
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m_updateProperties = 0;
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if ((properties & ErrorProperty) && m_error != QMediaPlayer::NoError)
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emit error(m_error, m_errorString);
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if (properties & PlaybackRateProperty)
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emit playbackRateChanged(m_playbackRate);
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if (properties & StreamTypesProperty) {
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emit audioAvailableChanged(m_streamTypes & DirectShowPlayerService::AudioStream);
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emit videoAvailableChanged(m_streamTypes & DirectShowPlayerService::VideoStream);
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}
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if (properties & PositionProperty)
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emit positionChanged(m_position);
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if (properties & DurationProperty)
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emit durationChanged(m_duration);
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if (properties & SeekableProperty)
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emit seekableChanged(m_seekable);
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if (properties & StatusProperty)
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emit mediaStatusChanged(m_status);
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if (properties & StateProperty)
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emit stateChanged(m_state);
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}
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void DirectShowPlayerControl::scheduleUpdate(int properties)
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{
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if (m_updateProperties == 0)
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QCoreApplication::postEvent(this, new QEvent(QEvent::Type(PropertiesChanged)));
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m_updateProperties |= properties;
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}
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void DirectShowPlayerControl::updateState(QMediaPlayer::State state)
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{
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if (m_state != state) {
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m_state = state;
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scheduleUpdate(StateProperty);
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}
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}
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void DirectShowPlayerControl::updateStatus(QMediaPlayer::MediaStatus status)
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{
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if (m_status != status) {
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m_status = status;
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scheduleUpdate(StatusProperty);
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}
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}
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void DirectShowPlayerControl::updateMediaInfo(qint64 duration, int streamTypes, bool seekable)
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{
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int properties = 0;
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if (m_duration != duration) {
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m_duration = duration;
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properties |= DurationProperty;
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}
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if (m_streamTypes != streamTypes) {
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m_streamTypes = streamTypes;
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properties |= StreamTypesProperty;
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}
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if (m_seekable != seekable) {
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m_seekable = seekable;
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properties |= SeekableProperty;
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}
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if (properties != 0)
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scheduleUpdate(properties);
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}
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void DirectShowPlayerControl::updatePlaybackRate(qreal rate)
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{
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if (m_playbackRate != rate) {
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m_playbackRate = rate;
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scheduleUpdate(PlaybackRateProperty);
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}
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}
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void DirectShowPlayerControl::updateAudioOutput(IBaseFilter *filter)
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{
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if (m_audio)
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m_audio->Release();
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m_audio = com_cast<IBasicAudio>(filter, IID_IBasicAudio);
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}
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void DirectShowPlayerControl::updateError(QMediaPlayer::Error error, const QString &errorString)
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{
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m_error = error;
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m_errorString = errorString;
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if (m_error != QMediaPlayer::NoError)
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scheduleUpdate(ErrorProperty);
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}
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void DirectShowPlayerControl::updatePosition(qint64 position)
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{
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if (m_position != position) {
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m_position = position;
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scheduleUpdate(PositionProperty);
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}
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}
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