QNX: Restructure plugins

Now that the MmRenderer implementation is ported to plain QNX, rename
the directories and files accordingly:

"blackberry" becomes "qnx", replace the Bb prefix with MmRenderer for
classes concerned with mm-renderer. The legacy alsa support for plain qnx
is now "qnx-audio".

Change-Id: I6abd98ecdd713b2d5e554d42224dc30f13772f43
Reviewed-by: Thomas McGuire <thomas.mcguire@kdab.com>

src/plugins/qnx/mediaplayer/ppsmediaplayercontrol.cpp

@@ -0,0 +1,199 @@
+/****************************************************************************
+**
+** Copyright (C) 2013 Research In Motion
+** Contact: http://www.qt-project.org/legal
+**
+** This file is part of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** Commercial License Usage
+** Licensees holding valid commercial Qt licenses may use this file in
+** accordance with the commercial license agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and Digia.  For licensing terms and
+** conditions see http://qt.digia.com/licensing.  For further information
+** use the contact form at http://qt.digia.com/contact-us.
+**
+** 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, Digia gives you certain additional
+** rights.  These rights are described in the Digia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 3.0 as published by the Free Software
+** Foundation and appearing in the file LICENSE.GPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU General Public License version 3.0 requirements will be
+** met: http://www.gnu.org/copyleft/gpl.html.
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "ppsmediaplayercontrol.h"
+#include "mmrenderervideowindowcontrol.h"
+
+#include <QtCore/qfile.h>
+#include <QtCore/qsocketnotifier.h>
+#include <QtCore/private/qcore_unix_p.h>
+
+#include <screen/screen.h>
+#include <sys/pps.h>
+
+QT_BEGIN_NAMESPACE
+
+PpsMediaPlayerControl::PpsMediaPlayerControl(QObject *parent)
+    : MmRendererMediaPlayerControl(parent),
+    m_ppsStatusNotifier(0),
+    m_ppsStatusFd(-1),
+    m_ppsStateNotifier(0),
+    m_ppsStateFd(-1)
+  , m_previouslySeenState("STOPPED")
+{
+    openConnection();
+}
+
+PpsMediaPlayerControl::~PpsMediaPlayerControl()
+{
+    destroy();
+}
+
+void PpsMediaPlayerControl::startMonitoring(int, const QString &contextName)
+{
+    const QString ppsContextPath = QStringLiteral("/pps/services/multimedia/renderer/context/%1/").arg(contextName);
+    const QString ppsStatusPath = ppsContextPath + QStringLiteral("/status");
+
+    Q_ASSERT(m_ppsStatusFd == -1);
+    errno = 0;
+    m_ppsStatusFd = qt_safe_open(QFile::encodeName(ppsStatusPath).constData(), O_RDONLY);
+    if (m_ppsStatusFd == -1) {
+        emitPError(QStringLiteral("Unable to open %1: %2").arg(ppsStatusPath, qt_error_string(errno)));
+        return;
+    }
+
+    Q_ASSERT(!m_ppsStatusNotifier);
+    m_ppsStatusNotifier = new QSocketNotifier(m_ppsStatusFd, QSocketNotifier::Read);
+    connect(m_ppsStatusNotifier, SIGNAL(activated(int)), this, SLOT(ppsReadyRead(int)));
+
+
+    const QString ppsStatePath = ppsContextPath + QStringLiteral("/state");
+
+    Q_ASSERT(m_ppsStateFd == -1);
+    errno = 0;
+    m_ppsStateFd = qt_safe_open(QFile::encodeName(ppsStatePath).constData(), O_RDONLY);
+    if (m_ppsStateFd == -1) {
+        emitPError(QStringLiteral("Unable to open %1: %2").arg(ppsStatePath, qt_error_string(errno)));
+        return;
+    }
+
+    Q_ASSERT(!m_ppsStateNotifier);
+    m_ppsStateNotifier = new QSocketNotifier(m_ppsStateFd, QSocketNotifier::Read);
+    connect(m_ppsStateNotifier, SIGNAL(activated(int)), this, SLOT(ppsReadyRead(int)));
+
+    //ensure we receive any initial state
+    ppsReadyRead(m_ppsStatusFd);
+    ppsReadyRead(m_ppsStateFd);
+}
+
+void PpsMediaPlayerControl::stopMonitoring()
+{
+
+    if (m_ppsStatusFd != -1) {
+        ::close(m_ppsStatusFd);
+        m_ppsStatusFd = -1;
+    }
+
+    delete m_ppsStatusNotifier;
+    m_ppsStatusNotifier = 0;
+
+    if (m_ppsStateFd != -1) {
+        ::close(m_ppsStateFd);
+        m_ppsStateFd = -1;
+    }
+
+    delete m_ppsStateNotifier;
+    m_ppsStateNotifier = 0;
+}
+
+bool PpsMediaPlayerControl::nativeEventFilter(const QByteArray &eventType, void *message, long *result)
+{
+    Q_UNUSED(result)
+    if (eventType == "screen_event_t") {
+        screen_event_t event = static_cast<screen_event_t>(message);
+        if (MmRendererVideoWindowControl *control = videoWindowControl())
+            control->screenEventHandler(event);
+    }
+
+    return false;
+}
+
+void PpsMediaPlayerControl::ppsReadyRead(int fd)
+{
+    Q_ASSERT(fd == m_ppsStateFd || fd == m_ppsStatusFd);
+    const int bufferSize = 2048;
+    char buffer[bufferSize];
+    const ssize_t nread = qt_safe_read(fd, buffer, bufferSize - 1);
+    if (nread < 0) {
+        //TODO emit error?
+    }
+
+    if (nread == 0) {
+        return;
+    }
+
+    // nread is the real space necessary, not the amount read.
+    if (static_cast<size_t>(nread) > bufferSize - 1) {
+        //TODO emit error?
+        qCritical("BBMediaPlayerControl: PPS buffer size too short; need %u.", nread + 1);
+        return;
+    }
+
+    buffer[nread] = 0;
+
+    pps_decoder_t decoder;
+
+    if (pps_decoder_initialize(&decoder, buffer) != PPS_DECODER_OK) {
+        //TODO emit error?
+        qCritical("Could not initialize pps_decoder");
+        pps_decoder_cleanup(&decoder);
+        return;
+    }
+
+    pps_decoder_push(&decoder, 0);
+
+    const char *value = 0;
+    if (pps_decoder_get_string(&decoder, "bufferlevel", &value) == PPS_DECODER_OK) {
+        setMmBufferStatus(QString::fromLatin1(value));
+    }
+
+    if (pps_decoder_get_string(&decoder, "state", &value) == PPS_DECODER_OK) {
+        const QByteArray state = value;
+        if (state != m_previouslySeenState && state == "STOPPED")
+            handleMmStopped();
+        m_previouslySeenState = state;
+    }
+
+    if (pps_decoder_get_string(&decoder, "position", &value) == PPS_DECODER_OK) {
+        const QByteArray valueBa = QByteArray(value);
+        bool ok;
+        const qint64 position = valueBa.toLongLong(&ok);
+        if (!ok) {
+            qCritical("Could not parse position from '%s'", valueBa.constData());
+        } else {
+            setMmPosition(position);
+        }
+    }
+
+    pps_decoder_cleanup(&decoder);
+}
+
+QT_END_NAMESPACE