+/*!
+ * This file is part of CameraPlus.
+ *
+ * Copyright (C) 2012 Mohammed Sameer <msameer@foolab.org>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#include "qtcampropertysetter.h"
+#include "qtcamdevice_p.h"
+#include <QSettings>
+#include <QDebug>
+
+#define PROPERTIES_FILE "/etc/qtcamera/properties.ini"
+
+class QtCamPropertySetterPrivate {
+public:
+ void binAdded(GstElement *bin) {
+ g_signal_connect(bin, "element-added",
+ G_CALLBACK(QtCamPropertySetterPrivate::element_added), this);
+
+ setProperties(bin);
+
+ // Let's traverse its children:
+ GstIterator *iter = gst_bin_iterate_elements(GST_BIN(bin));
+ if (!iter) {
+ return;
+ }
+
+ bool done = false;
+ GstElement *elem = 0;
+
+ while (!done) {
+ switch (gst_iterator_next(iter, (gpointer *)&elem)) {
+ case GST_ITERATOR_OK:
+ if (GST_IS_BIN(elem)) {
+ binAdded(elem);
+ }
+ else {
+ setProperties(elem);
+ }
+
+ gst_object_unref(elem);
+ break;
+ case GST_ITERATOR_RESYNC:
+ gst_iterator_resync(iter);
+ break;
+ case GST_ITERATOR_ERROR:
+ done = TRUE;
+ break;
+ case GST_ITERATOR_DONE:
+ done = TRUE;
+ break;
+ }
+ }
+ }
+
+ void setProperties(GstElement *element) {
+ QLatin1String name = elementName(element);
+ if (!name.latin1()) {
+ return;
+ }
+
+ QVariantMap map = properties(name);
+ if (map.isEmpty()) {
+ return;
+ }
+
+ QStringList keys = map.keys();
+ foreach (const QString& key, keys) {
+ QVariant value = map[key];
+ GParamSpec *pspec = g_object_class_find_property(G_OBJECT_GET_CLASS(element),
+ key.toUtf8().constData());
+ if (!pspec) {
+ qWarning() << "Property" << key << "not available for" << name;
+ continue;
+ }
+
+ GType type = getType(pspec->value_type);
+
+ switch (type) {
+ case G_TYPE_INT:
+ case G_TYPE_ENUM:
+ setInt(element, key, value);
+ break;
+ case G_TYPE_UINT:
+ setUnsignedInt(element, key, value);
+ break;
+ case G_TYPE_STRING:
+ setString(element, key, value);
+ break;
+ case G_TYPE_BOOLEAN:
+ setBoolean(element, key, value);
+ break;
+ default:
+ if (type == gstFraction) {
+ setFraction(element, key, value);
+ break;
+ }
+
+ qWarning() << "Unsupported property type"
+ << g_type_name(pspec->value_type) << "of parent" << g_type_name(type)
+ << "for" << key << "of element" << name;
+ break;
+ }
+ }
+ }
+
+ QVariantMap properties(const QLatin1String& name) {
+ QVariantMap map;
+
+ conf->beginGroup(name);
+
+ QStringList keys = conf->allKeys();
+ foreach (const QString& key, keys) {
+ map[key] = conf->value(key);
+ }
+
+ conf->endGroup();
+ return map;
+ }
+
+ QLatin1String elementName(GstElement *elem) {
+ GstElementFactory *factory = gst_element_get_factory(elem);
+ if (!factory) {
+ return QLatin1String(0);
+ }
+
+ const char *n = gst_plugin_feature_get_name(GST_PLUGIN_FEATURE(factory));
+ if (!n) {
+ return QLatin1String(0);
+ }
+
+ QLatin1String name(n);
+
+ return name;
+ }
+
+ void setInt(GstElement *elem, const QString& key, const QVariant& value) {
+ if (!value.canConvert(QVariant::Int)) {
+ qWarning() << "Cannot convert" << value << "to int";
+ return;
+ }
+
+ g_object_set(elem, key.toUtf8().constData(), value.toInt(), NULL);
+ }
+
+ void setUnsignedInt(GstElement *elem, const QString& key, const QVariant& value) {
+ if (!value.canConvert(QVariant::UInt)) {
+ qWarning() << "Cannot convert" << value << "to unsigned int";
+ return;
+ }
+
+ g_object_set(elem, key.toUtf8().constData(), value.toUInt(), NULL);
+ }
+
+ void setString(GstElement *elem, const QString& key, const QVariant& value) {
+ if (!value.canConvert(QVariant::String)) {
+ qWarning() << "Cannot convert" << value << "to string";
+ return;
+ }
+
+ g_object_set(elem, key.toUtf8().constData(), value.toString().toUtf8().constData(), NULL);
+ }
+
+ void setBoolean(GstElement *elem, const QString& key, const QVariant& value) {
+ if (!value.canConvert(QVariant::Bool)) {
+ qWarning() << "Cannot convert" << value << "to bool";
+ return;
+ }
+
+ g_object_set(elem, key.toUtf8().constData(), value.toBool() ? TRUE : FALSE, NULL);
+ }
+
+ void setFraction(GstElement *elem, const QString& key, const QVariant& value) {
+ if (!value.canConvert(QVariant::List)) {
+ qWarning() << "Cannot convert" << value << "to list";
+ return;
+ }
+
+ QList<QVariant> list = value.toList();
+ if (list.size() != 2) {
+ qWarning() << "fraction list must contain 2 items";
+ return;
+ }
+
+ if (!list[0].canConvert(QVariant::Int) || !list[1].canConvert(QVariant::Int)) {
+ qWarning() << "list items cannot be converted to int";
+ return;
+ }
+
+ int val1 = list[0].toInt();
+ int val2 = list[1].toInt();
+
+ g_object_set(elem, key.toUtf8().constData(), val1, val2, NULL);
+ }
+
+ GType getType(GType parent) {
+ if (G_TYPE_IS_FUNDAMENTAL(parent)) {
+ return parent;
+ }
+
+ return getType(g_type_parent(parent));
+ }
+
+ static void element_added(GstBin *bin, GstElement *child, gpointer user_data) {
+ Q_UNUSED(bin);
+
+ QtCamPropertySetterPrivate *d = static_cast<QtCamPropertySetterPrivate *>(user_data);
+
+ if (GST_IS_BIN(child)) {
+ d->binAdded(child);
+ }
+ else {
+ d->setProperties(child);
+ }
+ }
+
+ QSettings *conf;
+ GType gstFraction;
+};
+
+QtCamPropertySetter::QtCamPropertySetter(QtCamDevicePrivate *pvt) :
+ d_ptr(new QtCamPropertySetterPrivate) {
+ d_ptr->conf = new QSettings(PROPERTIES_FILE, QSettings::IniFormat);
+ d_ptr->gstFraction = GST_TYPE_FRACTION;
+ d_ptr->binAdded(pvt->cameraBin);
+}
+
+QtCamPropertySetter::~QtCamPropertySetter() {
+ delete d_ptr->conf; d_ptr->conf = 0;
+ delete d_ptr; d_ptr = 0;
+}
projects / harmattan / cameraplus / commitdiff