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#include "qgstreamerplayercontrol.h"
#include "qgstreamerplayersession.h"
#include <qmediaplaylistnavigator.h>
#include <QtCore/qdir.h>
#include <QtCore/qsocketnotifier.h>
#include <QtCore/qurl.h>
#include <QtCore/qdebug.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <unistd.h>
QGstreamerPlayerControl::QGstreamerPlayerControl(QGstreamerPlayerSession *session, QObject *parent)
: QMediaPlayerControl(parent)
, m_session(session)
, m_state(QMediaPlayer::StoppedState)
, m_mediaStatus(QMediaPlayer::NoMedia)
, m_bufferProgress(-1)
, m_stream(0)
, m_fifoNotifier(0)
, m_fifoCanWrite(false)
, m_bufferSize(0)
, m_bufferOffset(0)
{
m_fifoFd[0] = -1;
m_fifoFd[1] = -1;
connect(m_session, SIGNAL(positionChanged(qint64)),
this, SIGNAL(positionChanged(qint64)));
connect(m_session, SIGNAL(durationChanged(qint64)),
this, SIGNAL(durationChanged(qint64)));
connect(m_session, SIGNAL(mutedStateChanged(bool)),
this, SIGNAL(mutedChanged(bool)));
connect(m_session, SIGNAL(volumeChanged(int)),
this, SIGNAL(volumeChanged(int)));
connect(m_session, SIGNAL(stateChanged(QMediaPlayer::State)),
this, SLOT(updateState(QMediaPlayer::State)));
connect(m_session,SIGNAL(bufferingProgressChanged(int)),
this, SLOT(setBufferProgress(int)));
connect(m_session, SIGNAL(playbackFinished()),
this, SLOT(processEOS()));
connect(m_session, SIGNAL(audioAvailableChanged(bool)),
this, SIGNAL(audioAvailableChanged(bool)));
connect(m_session, SIGNAL(videoAvailableChanged(bool)),
this, SIGNAL(videoAvailableChanged(bool)));
connect(m_session, SIGNAL(seekableChanged(bool)),
this, SIGNAL(seekableChanged(bool)));
connect(m_session, SIGNAL(error(int,QString)),
this, SIGNAL(error(int,QString)));
}
QGstreamerPlayerControl::~QGstreamerPlayerControl()
{
if (m_fifoFd[0] >= 0) {
::close(m_fifoFd[0]);
::close(m_fifoFd[1]);
m_fifoFd[0] = -1;
m_fifoFd[1] = -1;
}
}
qint64 QGstreamerPlayerControl::position() const
{
return m_session->position();
}
qint64 QGstreamerPlayerControl::duration() const
{
return m_session->duration();
}
QMediaPlayer::State QGstreamerPlayerControl::state() const
{
return m_state;
}
QMediaPlayer::MediaStatus QGstreamerPlayerControl::mediaStatus() const
{
return m_mediaStatus;
}
int QGstreamerPlayerControl::bufferStatus() const
{
if (m_bufferProgress == -1) {
return m_session->state() == QMediaPlayer::StoppedState ? 0 : 100;
} else
return m_bufferProgress;
}
int QGstreamerPlayerControl::volume() const
{
return m_session->volume();
}
bool QGstreamerPlayerControl::isMuted() const
{
return m_session->isMuted();
}
bool QGstreamerPlayerControl::isSeekable() const
{
return m_session->isSeekable();
}
QMediaTimeRange QGstreamerPlayerControl::availablePlaybackRanges() const
{
QMediaTimeRange ranges;
if (m_session->isSeekable())
ranges.addInterval(0, m_session->duration());
return ranges;
}
qreal QGstreamerPlayerControl::playbackRate() const
{
return m_session->playbackRate();
}
void QGstreamerPlayerControl::setPlaybackRate(qreal rate)
{
m_session->setPlaybackRate(rate);
}
void QGstreamerPlayerControl::setPosition(qint64 pos)
{
m_session->seek(pos);
}
void QGstreamerPlayerControl::play()
{
if (m_session->play()) {
if (m_state != QMediaPlayer::PlayingState)
emit stateChanged(m_state = QMediaPlayer::PlayingState);
}
}
void QGstreamerPlayerControl::pause()
{
if (m_session->pause()) {
if (m_state != QMediaPlayer::PausedState)
emit stateChanged(m_state = QMediaPlayer::PausedState);
}
}
void QGstreamerPlayerControl::stop()
{
if (m_state != QMediaPlayer::StoppedState) {
m_session->pause();
if (!m_session->seek(0)) {
m_bufferProgress = -1;
m_session->stop();
m_session->pause();
}
emit positionChanged(0);
if (m_state != QMediaPlayer::StoppedState)
emit stateChanged(m_state = QMediaPlayer::StoppedState);
}
}
void QGstreamerPlayerControl::setVolume(int volume)
{
m_session->setVolume(volume);
}
void QGstreamerPlayerControl::setMuted(bool muted)
{
m_session->setMuted(muted);
}
QMediaContent QGstreamerPlayerControl::media() const
{
return m_currentResource;
}
const QIODevice *QGstreamerPlayerControl::mediaStream() const
{
return m_stream;
}
void QGstreamerPlayerControl::setMedia(const QMediaContent &content, QIODevice *stream)
{
QMediaPlayer::State oldState = m_state;
m_state = QMediaPlayer::StoppedState;
m_session->stop();
if (m_bufferProgress != -1) {
m_bufferProgress = -1;
emit bufferStatusChanged(0);
}
if (m_stream) {
closeFifo();
disconnect(m_stream, SIGNAL(readyRead()), this, SLOT(writeFifo()));
m_stream = 0;
}
m_currentResource = content;
m_stream = stream;
QUrl url;
if (m_stream) {
if (m_stream->isReadable() && openFifo()) {
url = QUrl(QString(QLatin1String("fd://%1")).arg(m_fifoFd[0]));
}
} else if (!content.isNull()) {
url = content.canonicalUrl();
}
m_session->load(url);
if (m_fifoFd[1] >= 0) {
m_fifoCanWrite = true;
writeFifo();
}
if (!url.isEmpty()) {
if (m_mediaStatus != QMediaPlayer::LoadingMedia)
emit mediaStatusChanged(m_mediaStatus = QMediaPlayer::LoadingMedia);
m_session->pause();
} else {
if (m_mediaStatus != QMediaPlayer::NoMedia)
emit mediaStatusChanged(m_mediaStatus = QMediaPlayer::NoMedia);
setBufferProgress(0);
}
emit mediaChanged(m_currentResource);
if (m_state != oldState)
emit stateChanged(m_state);
}
void QGstreamerPlayerControl::setVideoOutput(QObject *output)
{
m_session->setVideoRenderer(output);
}
bool QGstreamerPlayerControl::isAudioAvailable() const
{
return m_session->isAudioAvailable();
}
bool QGstreamerPlayerControl::isVideoAvailable() const
{
return m_session->isVideoAvailable();
}
void QGstreamerPlayerControl::updateState(QMediaPlayer::State state)
{
QMediaPlayer::MediaStatus oldStatus = m_mediaStatus;
switch (state) {
case QMediaPlayer::StoppedState:
if (m_state != QMediaPlayer::StoppedState)
emit stateChanged(m_state = QMediaPlayer::StoppedState);
break;
case QMediaPlayer::PlayingState:
case QMediaPlayer::PausedState:
if (m_state == QMediaPlayer::StoppedState)
m_mediaStatus = QMediaPlayer::LoadedMedia;
else {
if (m_bufferProgress == -1)
m_mediaStatus = QMediaPlayer::BufferedMedia;
}
break;
}
if (m_mediaStatus != oldStatus)
emit mediaStatusChanged(m_mediaStatus);
}
void QGstreamerPlayerControl::processEOS()
{
m_mediaStatus = QMediaPlayer::EndOfMedia;
m_state = QMediaPlayer::StoppedState;
emit stateChanged(m_state);
emit mediaStatusChanged(m_mediaStatus);
}
void QGstreamerPlayerControl::setBufferProgress(int progress)
{
if (m_bufferProgress == progress || m_mediaStatus == QMediaPlayer::NoMedia)
return;
QMediaPlayer::MediaStatus oldStatus = m_mediaStatus;
m_bufferProgress = progress;
if (m_state == QMediaPlayer::StoppedState) {
m_mediaStatus = QMediaPlayer::LoadedMedia;
} else {
if (m_bufferProgress < 100) {
m_mediaStatus = QMediaPlayer::StalledMedia;
m_session->pause();
} else {
m_mediaStatus = QMediaPlayer::BufferedMedia;
if (m_state == QMediaPlayer::PlayingState)
m_session->play();
}
}
if (m_mediaStatus != oldStatus)
emit mediaStatusChanged(m_mediaStatus);
emit bufferStatusChanged(m_bufferProgress);
}
void QGstreamerPlayerControl::writeFifo()
{
if (m_fifoCanWrite) {
qint64 bytesToRead = qMin<qint64>(
m_stream->bytesAvailable(), PIPE_BUF - m_bufferSize);
if (bytesToRead > 0) {
int bytesRead = m_stream->read(&m_buffer[m_bufferOffset + m_bufferSize], bytesToRead);
if (bytesRead > 0)
m_bufferSize += bytesRead;
}
if (m_bufferSize > 0) {
int bytesWritten = ::write(m_fifoFd[1], &m_buffer[m_bufferOffset], size_t(m_bufferSize));
if (bytesWritten > 0) {
m_bufferOffset += bytesWritten;
m_bufferSize -= bytesWritten;
if (m_bufferSize == 0)
m_bufferOffset = 0;
} else if (errno == EAGAIN) {
m_fifoCanWrite = false;
} else {
closeFifo();
}
}
}
m_fifoNotifier->setEnabled(m_stream->bytesAvailable() > 0);
}
void QGstreamerPlayerControl::fifoReadyWrite(int socket)
{
if (socket == m_fifoFd[1]) {
m_fifoCanWrite = true;
writeFifo();
}
}
bool QGstreamerPlayerControl::openFifo()
{
Q_ASSERT(m_fifoFd[0] < 0);
Q_ASSERT(m_fifoFd[1] < 0);
if (::pipe(m_fifoFd) == 0) {
int flags = ::fcntl(m_fifoFd[1], F_GETFD);
if (::fcntl(m_fifoFd[1], F_SETFD, flags | O_NONBLOCK) >= 0) {
m_fifoNotifier = new QSocketNotifier(m_fifoFd[1], QSocketNotifier::Write);
connect(m_fifoNotifier, SIGNAL(activated(int)), this, SLOT(fifoReadyWrite(int)));
return true;
} else {
qWarning("Failed to make pipe non blocking %d", errno);
::close(m_fifoFd[0]);
::close(m_fifoFd[1]);
m_fifoFd[0] = -1;
m_fifoFd[1] = -1;
return false;
}
} else {
qWarning("Failed to create pipe %d", errno);
return false;
}
}
void QGstreamerPlayerControl::closeFifo()
{
if (m_fifoFd[0] >= 0) {
delete m_fifoNotifier;
m_fifoNotifier = 0;
::close(m_fifoFd[0]);
::close(m_fifoFd[1]);
m_fifoFd[0] = -1;
m_fifoFd[1] = -1;
m_fifoCanWrite = false;
m_bufferSize = 0;
m_bufferOffset = 0;
}
}