gstreamer/tests/examples/gl/gtk/3dvideo/mviewwidget.c

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/*
* GStreamer
* Copyright (C) 2014-2015 Jan Schmidt <jan@centricular.com>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 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
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "mviewwidget.h"
G_DEFINE_TYPE (GstMViewWidget, gst_mview_widget, GTK_TYPE_GRID);
static void gst_mview_widget_constructed (GObject * o);
static void gst_mview_widget_set_property (GObject * object,
guint prop_id, const GValue * value, GParamSpec * pspec);
static void gst_mview_widget_get_property (GObject * object,
guint prop_id, GValue * value, GParamSpec * pspec);
#define DEFAULT_DOWNMIX GST_GL_STEREO_DOWNMIX_ANAGLYPH_GREEN_MAGENTA_DUBOIS
enum
{
PROP_0,
PROP_IS_OUTPUT,
PROP_MODE_SELECTOR,
PROP_FLAGS,
PROP_DOWNMIX_MODE
};
typedef struct _ToggleClosure
{
GstMViewWidget *mv;
GstVideoMultiviewFlags flag;
} ToggleClosure;
static GtkWidget *combo_box_from_enum (GType enum_type);
static void
gst_mview_widget_class_init (GstMViewWidgetClass * klass)
{
GObjectClass *object_klass = (GObjectClass *) (klass);
object_klass->constructed = gst_mview_widget_constructed;
object_klass->set_property = gst_mview_widget_set_property;
object_klass->get_property = gst_mview_widget_get_property;
g_object_class_install_property (object_klass, PROP_IS_OUTPUT,
g_param_spec_boolean ("is-output", "Is an Output widget",
"TRUE if the widget should have downmix mode", FALSE,
G_PARAM_CONSTRUCT_ONLY | G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (object_klass, PROP_MODE_SELECTOR,
g_param_spec_object ("mode-selector", "Multiview Mode selector",
"Multiview Mode selector widget",
GTK_TYPE_WIDGET, G_PARAM_READABLE | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (object_klass, PROP_FLAGS,
g_param_spec_flags ("flags", "Multiview Flags",
"multiview flags", GST_TYPE_VIDEO_MULTIVIEW_FLAGS,
GST_VIDEO_MULTIVIEW_FLAGS_NONE,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (object_klass, PROP_DOWNMIX_MODE,
g_param_spec_enum ("downmix-mode",
"Mode for mono downmixed output",
"Output anaglyph type to generate when downmixing to mono",
GST_TYPE_GL_STEREO_DOWNMIX_MODE_TYPE, DEFAULT_DOWNMIX,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
}
static void
gst_mview_widget_init (GstMViewWidget * mv)
{
}
static void
flag_changed (GObject * w, ToggleClosure * c)
{
GstMViewWidget *mv = GST_MVIEW_WIDGET (c->mv);
gboolean flag_set;
g_object_get (w, "active", &flag_set, NULL);
if (flag_set)
mv->flags |= c->flag;
else
mv->flags &= ~(c->flag);
if (!mv->synching)
g_object_notify (G_OBJECT (mv), "flags");
}
static void
link_button_to_flag (GstMViewWidget * mv, GtkWidget * w,
GstVideoMultiviewFlags flag)
{
ToggleClosure *c = g_new0 (ToggleClosure, 1);
c->mv = mv;
c->flag = flag;
g_signal_connect_data (G_OBJECT (w), "toggled", G_CALLBACK (flag_changed),
c, (GClosureNotify) g_free, 0);
}
static void
sync_flags (GstMViewWidget * mv)
{
mv->synching = TRUE;
g_object_set (G_OBJECT (mv->lflip), "active",
! !(mv->flags & GST_VIDEO_MULTIVIEW_FLAGS_LEFT_FLIPPED), NULL);
g_object_set (G_OBJECT (mv->lflop), "active",
! !(mv->flags & GST_VIDEO_MULTIVIEW_FLAGS_LEFT_FLOPPED), NULL);
g_object_set (G_OBJECT (mv->rflip), "active",
! !(mv->flags & GST_VIDEO_MULTIVIEW_FLAGS_RIGHT_FLIPPED), NULL);
g_object_set (G_OBJECT (mv->rflop), "active",
! !(mv->flags & GST_VIDEO_MULTIVIEW_FLAGS_RIGHT_FLOPPED), NULL);
g_object_set (G_OBJECT (mv->right_first), "active",
! !(mv->flags & GST_VIDEO_MULTIVIEW_FLAGS_RIGHT_VIEW_FIRST), NULL);
g_object_set (G_OBJECT (mv->half_aspect), "active",
! !(mv->flags & GST_VIDEO_MULTIVIEW_FLAGS_HALF_ASPECT), NULL);
mv->synching = FALSE;
}
static const gchar *
enum_value_to_nick (GType enum_type, guint value)
{
GEnumClass *enum_info;
GEnumValue *v;
const gchar *nick;
enum_info = (GEnumClass *) (g_type_class_ref (enum_type));
g_return_val_if_fail (enum_info != NULL, NULL);
v = g_enum_get_value (enum_info, value);
g_return_val_if_fail (v != NULL, NULL);
nick = v->value_nick;
g_type_class_unref (enum_info);
return nick;
}
static void
sync_downmix (GstMViewWidget * mv)
{
mv->synching = TRUE;
gtk_combo_box_set_active_id (GTK_COMBO_BOX (mv->downmix_combo),
enum_value_to_nick (GST_TYPE_GL_STEREO_DOWNMIX_MODE_TYPE,
mv->downmix_mode));
mv->synching = FALSE;
}
static gboolean
set_downmix_mode (GtkWidget * widget, gpointer data)
{
GstMViewWidget *mv = GST_MVIEW_WIDGET (data);
gchar *downmix_mode = NULL;
GEnumClass *p_class;
GEnumValue *v;
GParamSpec *p =
g_object_class_find_property (G_OBJECT_GET_CLASS (mv), "downmix-mode");
g_return_val_if_fail (p != NULL, FALSE);
p_class = G_PARAM_SPEC_ENUM (p)->enum_class;
g_return_val_if_fail (p_class != NULL, FALSE);
g_object_get (G_OBJECT (widget), "active-id", &downmix_mode, NULL);
g_return_val_if_fail (downmix_mode != NULL, FALSE);
v = g_enum_get_value_by_nick (p_class, downmix_mode);
g_return_val_if_fail (v != NULL, FALSE);
mv->downmix_mode = v->value;
if (!mv->synching)
g_object_notify (G_OBJECT (mv), "downmix-mode");
return FALSE;
}
static void
gst_mview_widget_constructed (GObject * o)
{
GstMViewWidget *mv = GST_MVIEW_WIDGET (o);
GtkGrid *g = GTK_GRID (mv);
GtkWidget *w;
gtk_widget_set_has_window (GTK_WIDGET (mv), FALSE);
if (mv->is_output) {
mv->mode_selector = w = combo_box_from_enum (GST_TYPE_VIDEO_MULTIVIEW_MODE);
gtk_grid_attach (g, gtk_label_new ("Output:"), 0, 0, 1, 1);
} else {
mv->mode_selector = w =
combo_box_from_enum (GST_TYPE_VIDEO_MULTIVIEW_FRAME_PACKING);
gtk_grid_attach (g, gtk_label_new ("Input:"), 0, 0, 1, 1);
}
gtk_grid_attach (g, mv->mode_selector, 1, 0, 3, 1);
gtk_grid_attach (g, gtk_label_new (" Left "), 4, 0, 1, 1);
mv->lflip = w = gtk_toggle_button_new_with_label ("Flip");
link_button_to_flag (mv, w, GST_VIDEO_MULTIVIEW_FLAGS_LEFT_FLIPPED);
gtk_grid_attach (g, w, 5, 0, 1, 1);
mv->lflop = w = gtk_toggle_button_new_with_label ("Flop");
link_button_to_flag (mv, w, GST_VIDEO_MULTIVIEW_FLAGS_LEFT_FLOPPED);
gtk_grid_attach (g, w, 6, 0, 1, 1);
gtk_grid_attach (g, gtk_label_new (" Right "), 4, 1, 1, 1);
mv->rflip = w = gtk_toggle_button_new_with_label ("Flip");
link_button_to_flag (mv, w, GST_VIDEO_MULTIVIEW_FLAGS_RIGHT_FLIPPED);
gtk_grid_attach (g, w, 5, 1, 1, 1);
mv->rflop = w = gtk_toggle_button_new_with_label ("Flop");
link_button_to_flag (mv, w, GST_VIDEO_MULTIVIEW_FLAGS_RIGHT_FLOPPED);
gtk_grid_attach (g, w, 6, 1, 1, 1);
mv->right_first = w = gtk_toggle_button_new_with_label ("Left/Right swap");
link_button_to_flag (mv, w, GST_VIDEO_MULTIVIEW_FLAGS_RIGHT_VIEW_FIRST);
gtk_grid_attach (g, w, 1, 1, 1, 1);
mv->half_aspect = w = gtk_toggle_button_new_with_label ("Half-Aspect");
link_button_to_flag (mv, w, GST_VIDEO_MULTIVIEW_FLAGS_HALF_ASPECT);
gtk_grid_attach (g, w, 2, 1, 1, 1);
if (mv->is_output) {
mv->downmix_combo = w =
combo_box_from_enum (GST_TYPE_GL_STEREO_DOWNMIX_MODE_TYPE);
gtk_grid_attach (g, w, 1, 2, 3, 1);
sync_downmix (mv);
g_signal_connect (G_OBJECT (w), "changed",
G_CALLBACK (set_downmix_mode), mv);
}
}
static void
gst_mview_widget_set_property (GObject * object,
guint prop_id, const GValue * value, GParamSpec * pspec)
{
GstMViewWidget *mv = GST_MVIEW_WIDGET (object);
switch (prop_id) {
case PROP_IS_OUTPUT:
mv->is_output = g_value_get_boolean (value);
break;
case PROP_FLAGS:
mv->flags = (GstVideoMultiviewFlags) g_value_get_flags (value);
sync_flags (mv);
break;
case PROP_DOWNMIX_MODE:
mv->downmix_mode = g_value_get_enum (value);
sync_downmix (mv);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static void
gst_mview_widget_get_property (GObject * object,
guint prop_id, GValue * value, GParamSpec * pspec)
{
GstMViewWidget *mv = GST_MVIEW_WIDGET (object);
switch (prop_id) {
case PROP_IS_OUTPUT:
g_value_set_boolean (value, mv->is_output);
break;
case PROP_MODE_SELECTOR:
g_value_set_object (value, mv->mode_selector);
break;
case PROP_FLAGS:
g_value_set_flags (value, mv->flags);
break;
case PROP_DOWNMIX_MODE:
g_value_set_enum (value, mv->downmix_mode);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static GtkWidget *
combo_box_from_enum (GType enum_type)
{
GEnumClass *enum_info;
GtkWidget *combo;
guint i;
enum_info = (GEnumClass *) (g_type_class_ref (enum_type));
g_return_val_if_fail (enum_info != NULL, NULL);
combo = gtk_combo_box_text_new ();
for (i = 0; i < enum_info->n_values; i++) {
GEnumValue *v = enum_info->values + i;
gtk_combo_box_text_insert (GTK_COMBO_BOX_TEXT (combo),
i, v->value_nick, v->value_name);
}
g_type_class_unref (enum_info);
return combo;
}
GtkWidget *
gst_mview_widget_new (gboolean is_output)
{
GtkWidget *ret;
ret = g_object_new (GST_TYPE_MVIEW_WIDGET, "is-output", is_output, NULL);
return ret;
}