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1403a1c7be7892ad4d1c5d04c143a318055fb36b
qtmultimedia/src/plugins/gstreamer/qgstreamerserviceplugin.cpp
Michael Goddard 1403a1c7be Remove some obsolete bits. 
They can be updated again later when things are more stable, if needed.

Change-Id: I73bdacdd3d1fd43a60cd3a0c14b925fa9c32ee27
Reviewed-on: http://codereview.qt.nokia.com/1724
Reviewed-by: Qt Sanity Bot <qt_sanity_bot@ovi.com>
Reviewed-by: Jonas Rabbe <jonas.rabbe@nokia.com>
2011-07-18 05:56:15 +02:00

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/****************************************************************************
**
** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
** All rights reserved.
** Contact: Nokia Corporation (qt-info@nokia.com)
**
** This file is part of the Qt Mobility Components.
**
** $QT_BEGIN_LICENSE:LGPL$
** GNU Lesser General Public License Usage
** 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, Nokia gives you certain additional
** rights. These rights are described in the Nokia 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.
**
** Other Usage
** Alternatively, this file may be used in accordance with the terms and
** conditions contained in a signed written agreement between you and Nokia.
**
**
**
**
**
** $QT_END_LICENSE$
**
****************************************************************************/
#include <QtCore/qstring.h>
#include <QtCore/qdebug.h>
#include <QtGui/QIcon>
#include <QtCore/QDir>
#include <QtCore/QDebug>
#include "qgstreamerserviceplugin.h"
//#define QT_SUPPORTEDMIMETYPES_DEBUG
#ifdef QMEDIA_GSTREAMER_PLAYER
#include "qgstreamerplayerservice.h"
#endif
#if defined(QMEDIA_GSTREAMER_CAPTURE)
#include "qgstreamercaptureservice.h"
#endif
#ifdef QMEDIA_GSTREAMER_CAMERABIN
#include "camerabinservice.h"
#endif
#include <qmediaserviceprovider.h>
#include <linux/types.h>
#include <sys/time.h>
#include <sys/ioctl.h>
#include <sys/poll.h>
#include <unistd.h>
#include <fcntl.h>
#include <errno.h>
#include <string.h>
#include <stdlib.h>
#include <sys/mman.h>
#include <linux/videodev2.h>
QStringList QGstreamerServicePlugin::keys() const
{
return QStringList()
#ifdef QMEDIA_GSTREAMER_PLAYER
<< QLatin1String(Q_MEDIASERVICE_MEDIAPLAYER)
#endif
#ifdef QMEDIA_GSTREAMER_CAPTURE
<< QLatin1String(Q_MEDIASERVICE_AUDIOSOURCE)
<< QLatin1String(Q_MEDIASERVICE_CAMERA)
#elif defined(QMEDIA_GSTREAMER_CAMERABIN)
<< QLatin1String(Q_MEDIASERVICE_CAMERA)
#endif
;
}
QMediaService* QGstreamerServicePlugin::create(const QString &key)
{
static bool initialized = false;
if (!initialized) {
initialized = true;
gst_init(NULL, NULL);
}
#ifdef QMEDIA_GSTREAMER_PLAYER
if (key == QLatin1String(Q_MEDIASERVICE_MEDIAPLAYER))
return new QGstreamerPlayerService;
#endif
#ifdef QMEDIA_GSTREAMER_CAMERABIN
if (key == QLatin1String(Q_MEDIASERVICE_CAMERA) && CameraBinService::isCameraBinAvailable())
return new CameraBinService(key);
#endif
#ifdef QMEDIA_GSTREAMER_CAPTURE
if (key == QLatin1String(Q_MEDIASERVICE_AUDIOSOURCE))
return new QGstreamerCaptureService(key);
if (key == QLatin1String(Q_MEDIASERVICE_CAMERA))
return new QGstreamerCaptureService(key);
#endif
qWarning() << "Gstreamer service plugin: unsupported key:" << key;
return 0;
}
void QGstreamerServicePlugin::release(QMediaService *service)
{
delete service;
}
QMediaServiceProviderHint::Features QGstreamerServicePlugin::supportedFeatures(
const QByteArray &service) const
{
if (service == Q_MEDIASERVICE_MEDIAPLAYER)
return QMediaServiceProviderHint::StreamPlayback | QMediaServiceProviderHint::VideoSurface;
else if (service == Q_MEDIASERVICE_CAMERA)
return QMediaServiceProviderHint::VideoSurface;
else
return QMediaServiceProviderHint::Features();
}
QList<QByteArray> QGstreamerServicePlugin::devices(const QByteArray &service) const
{
if (service == Q_MEDIASERVICE_CAMERA) {
if (m_cameraDevices.isEmpty())
updateDevices();
return m_cameraDevices;
}
return QList<QByteArray>();
}
QString QGstreamerServicePlugin::deviceDescription(const QByteArray &service, const QByteArray &device)
{
if (service == Q_MEDIASERVICE_CAMERA) {
if (m_cameraDevices.isEmpty())
updateDevices();
for (int i=0; i<m_cameraDevices.count(); i++)
if (m_cameraDevices[i] == device)
return m_cameraDescriptions[i];
}
return QString();
}
QVariant QGstreamerServicePlugin::deviceProperty(const QByteArray &service, const QByteArray &device, const QByteArray &property)
{
Q_UNUSED(service);
Q_UNUSED(device);
Q_UNUSED(property);
return QVariant();
}
void QGstreamerServicePlugin::updateDevices() const
{
m_cameraDevices.clear();
m_cameraDescriptions.clear();
#ifdef Q_WS_MAEMO_6
m_cameraDevices << "primary" << "secondary";
m_cameraDescriptions << tr("Main camera") << tr("Front camera");
return;
#endif
QDir devDir("/dev");
devDir.setFilter(QDir::System);
QFileInfoList entries = devDir.entryInfoList(QStringList() << "video*");
foreach( const QFileInfo &entryInfo, entries ) {
//qDebug() << "Try" << entryInfo.filePath();
int fd = ::open(entryInfo.filePath().toLatin1().constData(), O_RDWR );
if (fd == -1)
continue;
bool isCamera = false;
v4l2_input input;
memset(&input, 0, sizeof(input));
for (; ::ioctl(fd, VIDIOC_ENUMINPUT, &input) >= 0; ++input.index) {
if(input.type == V4L2_INPUT_TYPE_CAMERA || input.type == 0) {
isCamera = ::ioctl(fd, VIDIOC_S_INPUT, input.index) != 0;
break;
}
}
if (isCamera) {
// find out its driver "name"
QString name;
struct v4l2_capability vcap;
memset(&vcap, 0, sizeof(struct v4l2_capability));
if (ioctl(fd, VIDIOC_QUERYCAP, &vcap) != 0)
name = entryInfo.fileName();
else
name = QString((const char*)vcap.card);
//qDebug() << "found camera: " << name;
m_cameraDevices.append(entryInfo.filePath().toLocal8Bit());
m_cameraDescriptions.append(name);
}
::close(fd);
}
}
namespace {
const char* getCodecAlias(const QString &codec)
{
if (codec.startsWith("avc1."))
return "video/x-h264";
if (codec.startsWith("mp4a."))
return "audio/mpeg4";
if (codec.startsWith("mp4v.20."))
return "video/mpeg4";
if (codec == "samr")
return "audio/amr";
return 0;
}
const char* getMimeTypeAlias(const QString &mimeType)
{
if (mimeType == "video/mp4")
return "video/mpeg4";
if (mimeType == "audio/mp4")
return "audio/mpeg4";
if (mimeType == "video/ogg"
|| mimeType == "audio/ogg")
return "application/ogg";
return 0;
}
}
QtMultimediaKit::SupportEstimate QGstreamerServicePlugin::hasSupport(const QString &mimeType,
const QStringList& codecs) const
{
if (m_supportedMimeTypeSet.isEmpty())
updateSupportedMimeTypes();
QString mimeTypeLowcase = mimeType.toLower();
bool containsMimeType = m_supportedMimeTypeSet.contains(mimeTypeLowcase);
if (!containsMimeType) {
const char* mimeTypeAlias = getMimeTypeAlias(mimeTypeLowcase);
containsMimeType = m_supportedMimeTypeSet.contains(mimeTypeAlias);
if (!containsMimeType) {
containsMimeType = m_supportedMimeTypeSet.contains("video/" + mimeTypeLowcase)
|| m_supportedMimeTypeSet.contains("video/x-" + mimeTypeLowcase)
|| m_supportedMimeTypeSet.contains("audio/" + mimeTypeLowcase)
|| m_supportedMimeTypeSet.contains("audio/x-" + mimeTypeLowcase);
}
}
int supportedCodecCount = 0;
foreach(const QString &codec, codecs) {
QString codecLowcase = codec.toLower();
const char* codecAlias = getCodecAlias(codecLowcase);
if (codecAlias) {
if (m_supportedMimeTypeSet.contains(codecAlias))
supportedCodecCount++;
} else if (m_supportedMimeTypeSet.contains("video/" + codecLowcase)
|| m_supportedMimeTypeSet.contains("video/x-" + codecLowcase)
|| m_supportedMimeTypeSet.contains("audio/" + codecLowcase)
|| m_supportedMimeTypeSet.contains("audio/x-" + codecLowcase)) {
supportedCodecCount++;
}
}
if (supportedCodecCount > 0 && supportedCodecCount == codecs.size())
return QtMultimediaKit::ProbablySupported;
if (supportedCodecCount == 0 && !containsMimeType)
return QtMultimediaKit::NotSupported;
return QtMultimediaKit::MaybeSupported;
}
void QGstreamerServicePlugin::updateSupportedMimeTypes() const
{
//enumerate supported mime types
gst_init(NULL, NULL);
GList *plugins, *orig_plugins;
orig_plugins = plugins = gst_default_registry_get_plugin_list ();
while (plugins) {
GList *features, *orig_features;
GstPlugin *plugin = (GstPlugin *) (plugins->data);
plugins = g_list_next (plugins);
if (plugin->flags & (1<<1)) //GST_PLUGIN_FLAG_BLACKLISTED
continue;
orig_features = features = gst_registry_get_feature_list_by_plugin(gst_registry_get_default (),
plugin->desc.name);
while (features) {
if (!G_UNLIKELY(features->data == NULL)) {
GstPluginFeature *feature = GST_PLUGIN_FEATURE(features->data);
if (GST_IS_ELEMENT_FACTORY (feature)) {
GstElementFactory *factory = GST_ELEMENT_FACTORY(gst_plugin_feature_load(feature));
if (factory
&& factory->numpadtemplates > 0
&& (qstrcmp(factory->details.klass, "Codec/Decoder/Audio") == 0
|| qstrcmp(factory->details.klass, "Codec/Decoder/Video") == 0
|| qstrcmp(factory->details.klass, "Codec/Demux") == 0 )) {
const GList *pads = factory->staticpadtemplates;
while (pads) {
GstStaticPadTemplate *padtemplate = (GstStaticPadTemplate*)(pads->data);
pads = g_list_next (pads);
if (padtemplate->direction != GST_PAD_SINK)
continue;
if (padtemplate->static_caps.string) {
GstCaps *caps = gst_static_caps_get(&padtemplate->static_caps);
if (!gst_caps_is_any (caps) && ! gst_caps_is_empty (caps)) {
for (guint i = 0; i < gst_caps_get_size(caps); i++) {
GstStructure *structure = gst_caps_get_structure(caps, i);
QString nameLowcase = QString(gst_structure_get_name (structure)).toLower();
m_supportedMimeTypeSet.insert(nameLowcase);
if (nameLowcase.contains("mpeg")) {
//Because mpeg version number is only included in the detail
//description, it is necessary to manually extract this information
//in order to match the mime type of mpeg4.
const GValue *value = gst_structure_get_value(structure, "mpegversion");
if (value) {
gchar *str = gst_value_serialize (value);
QString versions(str);
QStringList elements = versions.split(QRegExp("\\D+"), QString::SkipEmptyParts);
foreach(const QString &e, elements)
m_supportedMimeTypeSet.insert(nameLowcase + e);
g_free (str);
}
}
}
}
}
}
gst_object_unref (factory);
}
} else if (GST_IS_TYPE_FIND_FACTORY(feature)) {
QString name(gst_plugin_feature_get_name(feature));
if (name.contains('/')) //filter out any string without '/' which is obviously not a mime type
m_supportedMimeTypeSet.insert(name.toLower());
}
}
features = g_list_next (features);
}
gst_plugin_feature_list_free (orig_features);
}
gst_plugin_list_free (orig_plugins);
#if defined QT_SUPPORTEDMIMETYPES_DEBUG
QStringList list = m_supportedMimeTypeSet.toList();
list.sort();
if (qgetenv("QT_DEBUG_PLUGINS").toInt() > 0) {
foreach(const QString &type, list)
qDebug() << type;
}
#endif
}
QStringList QGstreamerServicePlugin::supportedMimeTypes() const
{
return QStringList();
}
Q_EXPORT_PLUGIN2(qtmedia_gstengine, QGstreamerServicePlugin);
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