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#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::UnknownMediaStatus)
, 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);
emitPropertyChanges();
}
void DirectShowPlayerControl::play()
{
m_service->play();
emit stateChanged(m_state = QMediaPlayer::PlayingState);
}
void DirectShowPlayerControl::pause()
{
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);
}
}