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  • Committer: Colin Watson
  • Date: 2012-04-30 23:38:41 UTC
  • mfrom: (5402 trunk)
  • mto: This revision was merged to the branch mainline in revision 5403.
  • Revision ID: cjwatson@canonical.com-20120430233841-xb0qsk46lnhski7m
merge trunk

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src/webcam/webcam.c
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 * w = UbiquityWebcam.Webcam()
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 */
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#include <assert.h>
 
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#include <glib-object.h>
 
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#include <gtk/gtk.h>
 
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#define G_UDEV_API_IS_SUBJECT_TO_CHANGE 1
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#include <gudev/gudev.h>
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static gboolean message_cb (GstBus *bus, GstMessage *msg, gpointer data);
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static GstBusSyncReply window_id_cb (GstBus *bus, GstMessage *msg, gpointer data);
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G_DEFINE_TYPE (UbiquityWebcam, ubiquity_webcam, GTK_TYPE_VBOX)
 
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G_DEFINE_TYPE (UbiquityWebcam, ubiquity_webcam, GTK_TYPE_BOX)
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#define UBIQUITY_WEBCAM_PRIVATE(o) \
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        (G_TYPE_INSTANCE_GET_PRIVATE ((o), UBIQUITY_TYPE_WEBCAM, UbiquityWebcamPrivate))
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        GstBus *bus;
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};
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enum {
 
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        PROP_0,
 
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        PROP_BUTTON
 
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};
 
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static gulong video_window_xid = 0;
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static void
 
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ubiquity_webcam_get_property (GObject *object, guint prop_id, GValue *value,
 
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                              GParamSpec *pspec) {
 
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        UbiquityWebcamPrivate *priv = UBIQUITY_WEBCAM_PRIVATE (object);
 
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        switch (prop_id) {
 
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                case PROP_BUTTON:
 
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                        g_value_set_object (value, (GObject *) priv->button);
 
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                        break;
 
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                default:
 
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                        G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id,
 
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                                                           pspec);
 
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        }
 
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}
 
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static void
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ubiquity_webcam_class_init (UbiquityWebcamClass *klass) {
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        GObjectClass *object_class = G_OBJECT_CLASS (klass);
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        GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (klass);
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        GtkVBoxClass *vbox_class = GTK_VBOX_CLASS (klass);
 
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        GtkBoxClass *box_class = GTK_BOX_CLASS (klass);
 
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        object_class->get_property = ubiquity_webcam_get_property;
 
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        g_object_class_install_property (
 
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                object_class, PROP_BUTTON,
 
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                g_param_spec_object (
 
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                        "take-button", "'Take Photo' button",
 
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                        "The button that may be pressed to take a photo",
 
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                        GTK_TYPE_WIDGET,
 
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                        G_PARAM_READABLE | G_PARAM_STATIC_NAME |
 
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                        G_PARAM_STATIC_NICK | G_PARAM_STATIC_BLURB));
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        g_type_class_add_private (klass, sizeof (UbiquityWebcamPrivate));
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}
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static void
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ubiquity_webcam_init (UbiquityWebcam *self) {
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        UbiquityWebcamPrivate *priv;
 
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        gint width = 172, height = 129;
 
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        assert (width * 3 == height * 4); /* 4x3 ratio */
 
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        priv = self->priv = UBIQUITY_WEBCAM_PRIVATE (self);
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        gtk_orientable_set_orientation (GTK_ORIENTABLE (self),
 
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                                        GTK_ORIENTATION_VERTICAL);
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        gtk_box_set_spacing (GTK_BOX (self), 1);
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        priv->drawing_area = gtk_drawing_area_new ();
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        gtk_widget_set_size_request (priv->drawing_area, 320, 240);
 
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        gtk_widget_set_size_request (priv->drawing_area, width, height);
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        g_signal_connect (priv->drawing_area, "realize",
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                        G_CALLBACK(drawing_area_realized_cb), NULL);
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        gtk_widget_set_double_buffered (priv->drawing_area, FALSE);
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        priv->camerabin = gst_element_factory_make ("camerabin2" , "cam");
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        priv->viewfinder_caps = gst_caps_new_simple ("video/x-raw-rgb",
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                "width", G_TYPE_INT, 320, "height", G_TYPE_INT, 240, NULL);
 
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                "width", G_TYPE_INT, 640,
 
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                "height", G_TYPE_INT, 480, NULL);
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        g_object_set (G_OBJECT (priv->camerabin),
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                "viewfinder-caps", priv->viewfinder_caps, NULL);
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    g_signal_new ("image-captured",
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        priv->testsrc = gst_element_factory_make ("videotestsrc", NULL);
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        g_object_set (G_OBJECT (priv->testsrc), "is-live", TRUE,
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                "peer-alloc", FALSE, NULL);
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        g_object_set (G_OBJECT (priv->src), "video-src", priv->testsrc, NULL);
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        g_object_set (G_OBJECT (priv->camerabin), "camera-src", priv->src, NULL);
 
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        g_object_set (G_OBJECT (priv->src), "video-source", priv->testsrc, NULL);
 
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        g_object_set (G_OBJECT (priv->camerabin), "camera-source", priv->src, NULL);
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        ubiquity_webcam_stop (webcam);
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        ubiquity_webcam_play (webcam);
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        gst_object_ref (priv->src);
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void
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ubiquity_webcam_play (UbiquityWebcam *webcam) {
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        UbiquityWebcamPrivate *priv = UBIQUITY_WEBCAM_PRIVATE (webcam);
 
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        if (!priv || !priv->camerabin)
 
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                return;
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        if (gst_element_set_state (priv->camerabin, GST_STATE_PLAYING) == GST_STATE_CHANGE_FAILURE) {
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                g_print ("setting camerabin to PLAYING failed\n");
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                return;
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void
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ubiquity_webcam_stop (UbiquityWebcam *webcam) {
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        UbiquityWebcamPrivate *priv = UBIQUITY_WEBCAM_PRIVATE (webcam);
 
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        if (!priv || !priv->camerabin)
 
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                return;
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        if (gst_element_set_state (priv->camerabin, GST_STATE_NULL) == GST_STATE_CHANGE_FAILURE) {
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                g_print ("setting camerabin to STOPPED failed\n");
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                return;
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                g_print ("Failed to create pngenc.\n");
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                return;
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        }
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        g_object_set (G_OBJECT(camerabin), "image-capture-encoder", camerabin, NULL);
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        g_object_set (G_OBJECT(camerabin), "location", "/tmp/webcam_photo.jpg", NULL);
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        g_object_set (G_OBJECT(camerabin), "post-previews", FALSE, NULL);
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        g_signal_emit_by_name (camerabin, "start-capture", NULL);