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screen-cast: Add screen-cast-window interface
Typically, to stream the content of a window, we need a way to copy the
content of its window-actor into a buffer, transform relative input
coordinates to relative position within the window-actor and a mean to
get the window bounds within the buffer.
For this purpose, add a new GType interface `MetaScreenCastWindow` with
the methods needed for screen-cast window mode:
* meta_screen_cast_window_get_buffer_bounds()
* meta_screen_cast_window_get_frame_bounds()
* meta_screen_cast_window_transform_relative_position()
* meta_screen_cast_window_capture_into()
This interface is meant to be implemented by `MetaWindowActor` which has
access to all the necessary bits to implement them.
https://gitlab.gnome.org/GNOME/mutter/merge_requests/306
(cherry picked from commit 20c9ca25c0)
This commit is contained in:
Olivier Fourdan
Ray Strode
parent
9cde0a78d8
commit
c94ee761af
@ -159,6 +159,8 @@ libmutter_@LIBMUTTER_API_VERSION@_la_SOURCES = \
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backends/meta-output.h \
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backends/meta-output.h \
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backends/meta-pointer-constraint.c \
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backends/meta-pointer-constraint.c \
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backends/meta-pointer-constraint.h \
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backends/meta-pointer-constraint.h \
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backends/meta-screen-cast-window.c \
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backends/meta-screen-cast-window.h \
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backends/meta-settings.c \
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backends/meta-settings.c \
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backends/meta-settings-private.h \
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backends/meta-settings-private.h \
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backends/meta-stage-private.h \
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backends/meta-stage-private.h \
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71
src/backends/meta-screen-cast-window.c
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71
src/backends/meta-screen-cast-window.c
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@ -0,0 +1,71 @@
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/*
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* Copyright (C) 2018 Red Hat Inc.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 of the
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* License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
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* 02111-1307, USA.
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*
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*/
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#include "config.h"
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#include "backends/meta-screen-cast-window.h"
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G_DEFINE_INTERFACE (MetaScreenCastWindow, meta_screen_cast_window, G_TYPE_OBJECT)
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static void
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meta_screen_cast_window_default_init (MetaScreenCastWindowInterface *iface)
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{
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}
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void
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meta_screen_cast_window_get_buffer_bounds (MetaScreenCastWindow *screen_cast_window,
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MetaRectangle *bounds)
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{
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META_SCREEN_CAST_WINDOW_GET_IFACE (screen_cast_window)->get_buffer_bounds (screen_cast_window,
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bounds);
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}
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void
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meta_screen_cast_window_get_frame_bounds (MetaScreenCastWindow *screen_cast_window,
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MetaRectangle *bounds)
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{
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META_SCREEN_CAST_WINDOW_GET_IFACE (screen_cast_window)->get_frame_bounds (screen_cast_window,
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bounds);
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}
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void
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meta_screen_cast_window_transform_relative_position (MetaScreenCastWindow *screen_cast_window,
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double x,
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double y,
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double *x_out,
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double *y_out)
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{
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META_SCREEN_CAST_WINDOW_GET_IFACE (screen_cast_window)->transform_relative_position (screen_cast_window,
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x,
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y,
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x_out,
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y_out);
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}
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void
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meta_screen_cast_window_capture_into (MetaScreenCastWindow *screen_cast_window,
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MetaRectangle *bounds,
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uint8_t *data)
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{
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META_SCREEN_CAST_WINDOW_GET_IFACE (screen_cast_window)->capture_into (screen_cast_window,
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bounds,
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data);
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}
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74
src/backends/meta-screen-cast-window.h
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74
src/backends/meta-screen-cast-window.h
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@ -0,0 +1,74 @@
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/*
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* Copyright (C) 2018 Red Hat Inc.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 of the
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* License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
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* 02111-1307, USA.
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*
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*/
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#ifndef META_SCREEN_CAST_WINDOW_H
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#define META_SCREEN_CAST_WINDOW_H
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#include <stdint.h>
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#include <glib-object.h>
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#include "meta/boxes.h"
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G_BEGIN_DECLS
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#define META_TYPE_SCREEN_CAST_WINDOW (meta_screen_cast_window_get_type ())
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G_DECLARE_INTERFACE (MetaScreenCastWindow, meta_screen_cast_window,
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META, SCREEN_CAST_WINDOW, GObject)
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struct _MetaScreenCastWindowInterface
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{
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GTypeInterface parent_iface;
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void (*get_buffer_bounds) (MetaScreenCastWindow *screen_cast_window,
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MetaRectangle *bounds);
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void (*get_frame_bounds) (MetaScreenCastWindow *screen_cast_window,
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MetaRectangle *bounds);
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void (*transform_relative_position) (MetaScreenCastWindow *screen_cast_window,
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double x,
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double y,
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double *x_out,
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double *y_out);
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void (*capture_into) (MetaScreenCastWindow *screen_cast_window,
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MetaRectangle *bounds,
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uint8_t *data);
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};
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void meta_screen_cast_window_get_buffer_bounds (MetaScreenCastWindow *screen_cast_window,
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MetaRectangle *bounds);
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void meta_screen_cast_window_get_frame_bounds (MetaScreenCastWindow *screen_cast_window,
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MetaRectangle *bounds);
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void meta_screen_cast_window_transform_relative_position (MetaScreenCastWindow *screen_cast_window,
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double x,
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double y,
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double *x_out,
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double *y_out);
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void meta_screen_cast_window_capture_into (MetaScreenCastWindow *screen_cast_window,
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MetaRectangle *bounds,
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uint8_t *data);
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G_END_DECLS
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#endif /* META_SCREEN_CAST_WINDOW_H */
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