023c6ebcb9
Many GStreamer objects were not properly managed or never released. Change-Id: I38b3854e8b9e2264b5b647f331d3bb16b886e2d6 Reviewed-by: Andrew den Exter <andrew.den.exter@qinetic.com.au>
296 lines
11 KiB
C++
296 lines
11 KiB
C++
/****************************************************************************
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**
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** Copyright (C) 2013 Digia Plc and/or its subsidiary(-ies).
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** Contact: http://www.qt-project.org/legal
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**
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** This file is part of the Qt Toolkit.
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**
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** $QT_BEGIN_LICENSE:LGPL$
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** Commercial License Usage
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** Licensees holding valid commercial Qt licenses may use this file in
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** accordance with the commercial license agreement provided with the
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** Software or, alternatively, in accordance with the terms contained in
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** a written agreement between you and Digia. For licensing terms and
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** conditions see http://qt.digia.com/licensing. For further information
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** use the contact form at http://qt.digia.com/contact-us.
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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, Digia gives you certain additional
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** rights. These rights are described in the Digia 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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** GNU General Public License Usage
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** Alternatively, this file may be used under the terms of the GNU
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** General Public License version 3.0 as published by the Free Software
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** Foundation and appearing in the file LICENSE.GPL included in the
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** packaging of this file. Please review the following information to
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** ensure the GNU General Public License version 3.0 requirements will be
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** met: http://www.gnu.org/copyleft/gpl.html.
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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 <QtCore/qstring.h>
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#include <QtCore/qdebug.h>
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#include <QtCore/QDir>
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#include <QtCore/QDebug>
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#include "qgstreamercaptureserviceplugin.h"
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//#define QT_SUPPORTEDMIMETYPES_DEBUG
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#include "qgstreamercaptureservice.h"
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#include <private/qgstutils_p.h>
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#include <linux/types.h>
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#include <sys/time.h>
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#include <sys/ioctl.h>
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#include <sys/poll.h>
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#include <unistd.h>
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#include <fcntl.h>
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#include <errno.h>
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#include <string.h>
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#include <stdlib.h>
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#include <sys/mman.h>
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#include <linux/videodev2.h>
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#include <gst/gst.h>
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QMediaService* QGstreamerCaptureServicePlugin::create(const QString &key)
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{
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QGstUtils::initializeGst();
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if (key == QLatin1String(Q_MEDIASERVICE_AUDIOSOURCE))
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return new QGstreamerCaptureService(key);
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#if defined(USE_GSTREAMER_CAMERA)
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if (key == QLatin1String(Q_MEDIASERVICE_CAMERA))
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return new QGstreamerCaptureService(key);
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#endif
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qWarning() << "Gstreamer capture service plugin: unsupported key:" << key;
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return 0;
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}
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void QGstreamerCaptureServicePlugin::release(QMediaService *service)
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{
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delete service;
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}
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#if defined(USE_GSTREAMER_CAMERA)
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QMediaServiceProviderHint::Features QGstreamerCaptureServicePlugin::supportedFeatures(
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const QByteArray &service) const
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{
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if (service == Q_MEDIASERVICE_CAMERA)
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return QMediaServiceProviderHint::VideoSurface;
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return QMediaServiceProviderHint::Features();
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}
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QByteArray QGstreamerCaptureServicePlugin::defaultDevice(const QByteArray &service) const
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{
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if (service == Q_MEDIASERVICE_CAMERA) {
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if (m_cameraDevices.isEmpty())
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updateDevices();
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return m_defaultCameraDevice;
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}
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return QByteArray();
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}
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QList<QByteArray> QGstreamerCaptureServicePlugin::devices(const QByteArray &service) const
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{
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if (service == Q_MEDIASERVICE_CAMERA) {
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if (m_cameraDevices.isEmpty())
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updateDevices();
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return m_cameraDevices;
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}
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return QList<QByteArray>();
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}
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QString QGstreamerCaptureServicePlugin::deviceDescription(const QByteArray &service, const QByteArray &device)
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{
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if (service == Q_MEDIASERVICE_CAMERA) {
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if (m_cameraDevices.isEmpty())
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updateDevices();
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for (int i=0; i<m_cameraDevices.count(); i++)
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if (m_cameraDevices[i] == device)
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return m_cameraDescriptions[i];
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}
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return QString();
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}
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QVariant QGstreamerCaptureServicePlugin::deviceProperty(const QByteArray &service, const QByteArray &device, const QByteArray &property)
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{
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Q_UNUSED(service);
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Q_UNUSED(device);
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Q_UNUSED(property);
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return QVariant();
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}
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void QGstreamerCaptureServicePlugin::updateDevices() const
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{
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m_defaultCameraDevice.clear();
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m_cameraDevices.clear();
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m_cameraDescriptions.clear();
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QDir devDir("/dev");
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devDir.setFilter(QDir::System);
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QFileInfoList entries = devDir.entryInfoList(QStringList() << "video*");
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foreach( const QFileInfo &entryInfo, entries ) {
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//qDebug() << "Try" << entryInfo.filePath();
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int fd = ::open(entryInfo.filePath().toLatin1().constData(), O_RDWR );
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if (fd == -1)
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continue;
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bool isCamera = false;
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v4l2_input input;
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memset(&input, 0, sizeof(input));
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for (; ::ioctl(fd, VIDIOC_ENUMINPUT, &input) >= 0; ++input.index) {
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if(input.type == V4L2_INPUT_TYPE_CAMERA || input.type == 0) {
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isCamera = ::ioctl(fd, VIDIOC_S_INPUT, input.index) != 0;
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break;
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}
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}
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if (isCamera) {
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// find out its driver "name"
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QString name;
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struct v4l2_capability vcap;
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memset(&vcap, 0, sizeof(struct v4l2_capability));
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if (ioctl(fd, VIDIOC_QUERYCAP, &vcap) != 0)
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name = entryInfo.fileName();
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else
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name = QString((const char*)vcap.card);
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//qDebug() << "found camera: " << name;
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m_cameraDevices.append(entryInfo.filePath().toLocal8Bit());
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m_cameraDescriptions.append(name);
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}
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::close(fd);
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}
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if (!m_cameraDevices.isEmpty())
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m_defaultCameraDevice = m_cameraDevices.first();
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}
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#endif
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QMultimedia::SupportEstimate QGstreamerCaptureServicePlugin::hasSupport(const QString &mimeType,
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const QStringList& codecs) const
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{
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if (m_supportedMimeTypeSet.isEmpty())
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updateSupportedMimeTypes();
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return QGstUtils::hasSupport(mimeType, codecs, m_supportedMimeTypeSet);
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}
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void QGstreamerCaptureServicePlugin::updateSupportedMimeTypes() const
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{
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//enumerate supported mime types
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gst_init(NULL, NULL);
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GList *plugins, *orig_plugins;
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orig_plugins = plugins = gst_default_registry_get_plugin_list ();
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while (plugins) {
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GList *features, *orig_features;
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GstPlugin *plugin = (GstPlugin *) (plugins->data);
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plugins = g_list_next (plugins);
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if (plugin->flags & (1<<1)) //GST_PLUGIN_FLAG_BLACKLISTED
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continue;
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orig_features = features = gst_registry_get_feature_list_by_plugin(gst_registry_get_default (),
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plugin->desc.name);
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while (features) {
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if (!G_UNLIKELY(features->data == NULL)) {
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GstPluginFeature *feature = GST_PLUGIN_FEATURE(features->data);
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if (GST_IS_ELEMENT_FACTORY (feature)) {
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GstElementFactory *factory = GST_ELEMENT_FACTORY(gst_plugin_feature_load(feature));
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if (factory
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&& factory->numpadtemplates > 0
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&& (qstrcmp(factory->details.klass, "Codec/Decoder/Audio") == 0
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|| qstrcmp(factory->details.klass, "Codec/Decoder/Video") == 0
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|| qstrcmp(factory->details.klass, "Codec/Demux") == 0 )) {
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const GList *pads = factory->staticpadtemplates;
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while (pads) {
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GstStaticPadTemplate *padtemplate = (GstStaticPadTemplate*)(pads->data);
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pads = g_list_next (pads);
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if (padtemplate->direction != GST_PAD_SINK)
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continue;
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if (padtemplate->static_caps.string) {
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GstCaps *caps = gst_static_caps_get(&padtemplate->static_caps);
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if (!gst_caps_is_any (caps) && ! gst_caps_is_empty (caps)) {
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for (guint i = 0; i < gst_caps_get_size(caps); i++) {
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GstStructure *structure = gst_caps_get_structure(caps, i);
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QString nameLowcase = QString(gst_structure_get_name (structure)).toLower();
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m_supportedMimeTypeSet.insert(nameLowcase);
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if (nameLowcase.contains("mpeg")) {
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//Because mpeg version number is only included in the detail
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//description, it is necessary to manually extract this information
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//in order to match the mime type of mpeg4.
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const GValue *value = gst_structure_get_value(structure, "mpegversion");
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if (value) {
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gchar *str = gst_value_serialize (value);
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QString versions(str);
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QStringList elements = versions.split(QRegExp("\\D+"), QString::SkipEmptyParts);
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foreach (const QString &e, elements)
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m_supportedMimeTypeSet.insert(nameLowcase + e);
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g_free (str);
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}
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}
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}
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}
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gst_caps_unref(caps);
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}
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}
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gst_object_unref (factory);
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}
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} else if (GST_IS_TYPE_FIND_FACTORY(feature)) {
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QString name(gst_plugin_feature_get_name(feature));
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if (name.contains('/')) //filter out any string without '/' which is obviously not a mime type
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m_supportedMimeTypeSet.insert(name.toLower());
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}
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}
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features = g_list_next (features);
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}
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gst_plugin_feature_list_free (orig_features);
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}
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gst_plugin_list_free (orig_plugins);
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#if defined QT_SUPPORTEDMIMETYPES_DEBUG
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QStringList list = m_supportedMimeTypeSet.toList();
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list.sort();
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if (qgetenv("QT_DEBUG_PLUGINS").toInt() > 0) {
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foreach (const QString &type, list)
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qDebug() << type;
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}
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#endif
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}
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QStringList QGstreamerCaptureServicePlugin::supportedMimeTypes() const
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{
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return QStringList();
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}
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