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https://gitlab.freedesktop.org/gstreamer/gstreamer.git
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63bbe9406a
- glimagesink needs to be able to resize the viewport on aspect ratio changes resulting from either caps changes or 3d output mode changes. - Performing a glViewport outside the GstGLWindow::resize callback will not have the winsys' stack of viewports required to correctly place the output frame. Provide a function to request a resize on the next draw event from the winsys. Also track size changes inside the base GstGLWindow class rather than in each subclass. https://bugzilla.gnome.org/show_bug.cgi?id=755111
244 lines
9.7 KiB
C
244 lines
9.7 KiB
C
/*
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* GStreamer
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* Copyright (C) 2008 Julien Isorce <julien.isorce@gmail.com>
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* Copyright (C) 2012 Matthew Waters <ystreet00@gmail.com>
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but 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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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
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* Boston, MA 02110-1301, USA.
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*/
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#ifndef __GST_GL_WINDOW_H__
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#define __GST_GL_WINDOW_H__
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#include <gst/gst.h>
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#include <gst/gl/gstgl_fwd.h>
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#include <gst/gl/gstglcontext.h>
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#include <gst/gl/gstgldisplay.h>
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G_BEGIN_DECLS
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#define GST_GL_TYPE_WINDOW (gst_gl_window_get_type())
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#define GST_GL_WINDOW(o) (G_TYPE_CHECK_INSTANCE_CAST((o), GST_GL_TYPE_WINDOW, GstGLWindow))
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#define GST_GL_WINDOW_CLASS(k) (G_TYPE_CHECK_CLASS_CAST((k), GST_GL_TYPE_WINDOW, GstGLWindowClass))
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#define GST_GL_IS_WINDOW(o) (G_TYPE_CHECK_INSTANCE_TYPE((o), GST_GL_TYPE_WINDOW))
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#define GST_GL_IS_WINDOW_CLASS(k) (G_TYPE_CHECK_CLASS_TYPE((k), GST_GL_TYPE_WINDOW))
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#define GST_GL_WINDOW_GET_CLASS(o) (G_TYPE_INSTANCE_GET_CLASS((o), GST_GL_TYPE_WINDOW, GstGLWindowClass))
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#define GST_GL_WINDOW_LOCK(w) g_mutex_lock(&GST_GL_WINDOW(w)->lock)
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#define GST_GL_WINDOW_UNLOCK(w) g_mutex_unlock(&GST_GL_WINDOW(w)->lock)
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#define GST_GL_WINDOW_GET_LOCK(w) (&GST_GL_WINDOW(w)->lock)
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#define GST_GL_WINDOW_ERROR (gst_gl_window_error_quark ())
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typedef enum
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{
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GST_GL_WINDOW_ERROR_FAILED,
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GST_GL_WINDOW_ERROR_OLD_LIBS,
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GST_GL_WINDOW_ERROR_RESOURCE_UNAVAILABLE,
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} GstGLWindowError;
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typedef void (*GstGLWindowCB) (gpointer data);
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typedef void (*GstGLWindowResizeCB) (gpointer data, guint width, guint height);
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#define GST_GL_WINDOW_CB(f) ((GstGLWindowCB) (f))
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#define GST_GL_WINDOW_RESIZE_CB(f) ((GstGLWindowResizeCB) (f))
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/**
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* GstGLWindow:
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*
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* #GstGLWindow is an opaque struct and should only be accessed through the
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* provided api.
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*/
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struct _GstGLWindow {
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/*< private >*/
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GstObject parent;
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GMutex lock;
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GMutex nav_lock;
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GCond nav_create_cond;
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GCond nav_destroy_cond;
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gboolean nav_created;
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gboolean nav_alive;
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GstGLDisplay *display;
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GWeakRef context_ref;
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guintptr external_gl_context;
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gboolean is_drawing;
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GstGLWindowCB draw;
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gpointer draw_data;
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GDestroyNotify draw_notify;
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GstGLWindowCB close;
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gpointer close_data;
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GDestroyNotify close_notify;
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GstGLWindowResizeCB resize;
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gpointer resize_data;
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GDestroyNotify resize_notify;
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gboolean queue_resize;
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/*< private >*/
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GMainContext *navigation_context;
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GMainLoop *navigation_loop;
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GstGLWindowPrivate *priv;
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gpointer _reserved[GST_PADDING];
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};
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/**
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* GstGLWindowClass:
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* @parent_class: Parent class
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* @get_display: Gets the current windowing system display connection
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* @set_window_handle: Set a window to render into
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* @get_window_handle: Gets the current window that this #GstGLWindow is
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* rendering into
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* @draw_unlocked: redraw the window with the specified dimensions
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* @draw: redraw the window with the specified dimensions
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* @run: run the mainloop
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* @quit: send a quit to the mainloop
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* @send_message: invoke a function on the window thread. Required to be reentrant.
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* @send_message_async: invoke a function on the window thread. @run may or may
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* not have been called. Required to be reentrant.
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* @open: open the connection to the display
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* @close: close the connection to the display
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* @get_surface_dimensions: get the width and height of the surface we are
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* rendering into.
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* @handle_events: whether to handle 'extra' events from the windowing system.
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* Basic events like surface moves and resizes are still valid
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* things to listen for.
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* @set_preferred_size: request that the window change surface size. The
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* implementation is free to ignore this information.
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*/
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struct _GstGLWindowClass {
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GstObjectClass parent_class;
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guintptr (*get_display) (GstGLWindow *window);
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void (*set_window_handle) (GstGLWindow *window, guintptr id);
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guintptr (*get_window_handle) (GstGLWindow *window);
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void (*draw_unlocked) (GstGLWindow *window);
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void (*draw) (GstGLWindow *window);
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void (*run) (GstGLWindow *window);
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void (*quit) (GstGLWindow *window);
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void (*send_message) (GstGLWindow *window, GstGLWindowCB callback, gpointer data);
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void (*send_message_async) (GstGLWindow *window, GstGLWindowCB callback, gpointer data, GDestroyNotify destroy);
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gboolean (*open) (GstGLWindow *window, GError **error);
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void (*close) (GstGLWindow *window);
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void (*handle_events) (GstGLWindow *window, gboolean handle_events);
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void (*set_preferred_size) (GstGLWindow *window, gint width, gint height);
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void (*show) (GstGLWindow *window);
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gboolean (*set_render_rectangle)(GstGLWindow *window, gint x, gint y, gint width, gint height);
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void (*queue_resize) (GstGLWindow *window);
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/*< private >*/
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gpointer _reserved[GST_PADDING];
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};
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struct key_event
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{
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GstGLWindow *window;
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const char *event_type;
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const char *key_str;
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};
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struct mouse_event
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{
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GstGLWindow *window;
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const char *event_type;
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int button;
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double posx;
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double posy;
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};
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GQuark gst_gl_window_error_quark (void);
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GType gst_gl_window_get_type (void);
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GstGLWindow * gst_gl_window_new (GstGLDisplay *display);
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/* callbacks */
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void gst_gl_window_set_draw_callback (GstGLWindow *window,
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GstGLWindowCB callback,
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gpointer data,
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GDestroyNotify destroy_notify);
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void gst_gl_window_set_resize_callback (GstGLWindow *window,
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GstGLWindowResizeCB callback,
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gpointer data,
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GDestroyNotify destroy_notify);
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void gst_gl_window_set_close_callback (GstGLWindow *window,
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GstGLWindowCB callback,
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gpointer data,
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GDestroyNotify destroy_notify);
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void gst_gl_window_set_window_handle (GstGLWindow *window, guintptr handle);
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guintptr gst_gl_window_get_window_handle (GstGLWindow *window);
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/* loop/events */
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void gst_gl_window_run (GstGLWindow *window);
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void gst_gl_window_quit (GstGLWindow *window);
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gboolean gst_gl_window_is_running (GstGLWindow *window);
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void gst_gl_window_send_message (GstGLWindow *window,
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GstGLWindowCB callback,
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gpointer data);
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void gst_gl_window_send_message_async (GstGLWindow *window,
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GstGLWindowCB callback,
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gpointer data,
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GDestroyNotify destroy);
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/* navigation */
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void gst_gl_window_handle_events (GstGLWindow * window,
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gboolean handle_events);
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gboolean gst_gl_window_key_event_cb (gpointer data);
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gboolean gst_gl_window_mouse_event_cb (gpointer data);
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void gst_gl_window_send_key_event (GstGLWindow * window,
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const char * event_type,
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const char * key_str);
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void gst_gl_window_send_mouse_event (GstGLWindow * window,
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const char * event_type,
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int button,
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double posx,
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double posy);
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/* surfaces/rendering */
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void gst_gl_window_queue_resize (GstGLWindow *window);
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void gst_gl_window_draw_unlocked (GstGLWindow *window);
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void gst_gl_window_draw (GstGLWindow *window);
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void gst_gl_window_show (GstGLWindow *window);
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void gst_gl_window_set_preferred_size (GstGLWindow * window,
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gint width,
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gint height);
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void gst_gl_window_get_surface_dimensions (GstGLWindow * window,
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guint * width,
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guint * height);
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gboolean gst_gl_window_set_render_rectangle (GstGLWindow * window,
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gint x,
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gint y,
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gint width,
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gint height);
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/* subclass usage only */
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void gst_gl_window_resize (GstGLWindow *window, guint width, guint height);
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GstGLContext * gst_gl_window_get_context (GstGLWindow *window);
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guintptr gst_gl_window_get_display (GstGLWindow *window);
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GST_DEBUG_CATEGORY_EXTERN (gst_gl_window_debug);
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G_END_DECLS
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#endif /* __GST_GL_WINDOW_H__ */
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