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::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;
m_seekToStartPending = false;
QNetworkRequest request;
if (m_stream) {
if (m_stream->isReadable() && openFifo()) {
request = QNetworkRequest(QUrl(QString(QLatin1String("fd://%1")).arg(m_fifoFd[0])));
}
} else if (!content.isNull()) {
request = content.canonicalRequest();
}
m_session->load(request);
if (m_fifoFd[1] >= 0) {
m_fifoCanWrite = true;
writeFifo();
}
if (!request.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);
}
