gstreamer/subprojects/gst-plugins-base/gst-libs/gst/gl/gstglwindow.c

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/*
* GStreamer
* Copyright (C) 2012 Matthew Waters <ystreet00@gmail.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.
*/
/**
* SECTION:gstglwindow
* @short_description: window/surface abstraction
* @title: GstGLWindow
* @see_also: #GstGLContext, #GstGLDisplay
*
* GstGLWindow represents a window that elements can render into. A window can
* either be a user visible window (onscreen) or hidden (offscreen).
*/
#ifdef HAVE_CONFIG_H
# include "config.h"
#endif
#include <gmodule.h>
#include <stdio.h>
#include "gl.h"
#include "gstglwindow.h"
#include "gstglwindow_private.h"
/* FIXME make this work with windowless contexts */
#if GST_GL_HAVE_WINDOW_X11
#include "x11/gstglwindow_x11.h"
#endif
#if GST_GL_HAVE_WINDOW_WIN32
#include "win32/gstglwindow_win32.h"
#endif
#if GST_GL_HAVE_WINDOW_COCOA
#include "cocoa/gstglwindow_cocoa.h"
#endif
#if GST_GL_HAVE_WINDOW_WAYLAND
#include "wayland/gstglwindow_wayland_egl.h"
#endif
#if GST_GL_HAVE_WINDOW_ANDROID
#include "android/gstglwindow_android_egl.h"
#endif
#if GST_GL_HAVE_WINDOW_EAGL
#include "eagl/gstglwindow_eagl.h"
#endif
#if GST_GL_HAVE_WINDOW_VIV_FB
#include "viv-fb/gstglwindow_viv_fb_egl.h"
#endif
#if GST_GL_HAVE_WINDOW_GBM
#include "gbm/gstglwindow_gbm_egl.h"
#endif
#if GST_GL_HAVE_WINDOW_DISPMANX
#include "dispmanx/gstglwindow_dispmanx_egl.h"
#endif
#if GST_GL_HAVE_WINDOW_WINRT
#include "winrt/gstglwindow_winrt_egl.h"
#endif
#define USING_OPENGL(context) (gst_gl_context_check_gl_version (context, GST_GL_API_OPENGL, 1, 0))
#define USING_OPENGL3(context) (gst_gl_context_check_gl_version (context, GST_GL_API_OPENGL3, 3, 1))
#define USING_GLES(context) (gst_gl_context_check_gl_version (context, GST_GL_API_GLES, 1, 0))
#define USING_GLES2(context) (gst_gl_context_check_gl_version (context, GST_GL_API_GLES2, 2, 0))
#define USING_GLES3(context) (gst_gl_context_check_gl_version (context, GST_GL_API_GLES2, 3, 0))
#define GST_CAT_DEFAULT gst_gl_window_debug
GST_DEBUG_CATEGORY (GST_CAT_DEFAULT);
static void gst_gl_window_default_draw (GstGLWindow * window);
static void gst_gl_window_default_run (GstGLWindow * window);
static void gst_gl_window_default_quit (GstGLWindow * window);
static void gst_gl_window_default_send_message (GstGLWindow * window,
GstGLWindowCB callback, gpointer data);
static void gst_gl_window_default_send_message_async (GstGLWindow * window,
GstGLWindowCB callback, gpointer data, GDestroyNotify destroy);
static gboolean gst_gl_window_default_has_output_surface (GstGLWindow * window);
struct _GstGLWindowPrivate
{
GMainLoop *loop;
guint surface_width;
guint surface_height;
GMutex sync_message_lock;
GCond sync_message_cond;
};
#define gst_gl_window_parent_class parent_class
G_DEFINE_ABSTRACT_TYPE_WITH_PRIVATE (GstGLWindow, gst_gl_window,
GST_TYPE_OBJECT);
static void gst_gl_window_finalize (GObject * object);
typedef struct _GstGLDummyWindow
{
GstGLWindow parent;
guintptr handle;
} GstGLDummyWindow;
typedef struct _GstGLDummyWindowCass
{
GstGLWindowClass parent;
} GstGLDummyWindowClass;
static GstGLDummyWindow *gst_gl_dummy_window_new (void);
enum
{
SIGNAL_0,
EVENT_MOUSE_SIGNAL,
EVENT_KEY_SIGNAL,
EVENT_SCROLL_SIGNAL,
WINDOW_HANDLE_CHANGED_SIGNAL,
LAST_SIGNAL
};
static guint gst_gl_window_signals[LAST_SIGNAL] = { 0 };
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/**
* gst_gl_window_error_quark:
*
* Returns: the quark used for #GstGLWindow in #GError's
*/
GQuark
gst_gl_window_error_quark (void)
{
return g_quark_from_static_string ("gst-gl-window-error-quark");
}
static gboolean
gst_gl_window_default_open (GstGLWindow * window, GError ** error)
{
g_main_context_push_thread_default (window->main_context);
return TRUE;
}
static void
gst_gl_window_default_close (GstGLWindow * window)
{
g_main_context_pop_thread_default (window->main_context);
}
static void
_init_debug (void)
{
static gsize _init = 0;
if (g_once_init_enter (&_init)) {
GST_DEBUG_CATEGORY_INIT (gst_gl_window_debug, "glwindow", 0,
"glwindow element");
g_once_init_leave (&_init, 1);
}
}
static void
gst_gl_window_init (GstGLWindow * window)
{
GstGLWindowPrivate *priv = gst_gl_window_get_instance_private (window);
window->priv = priv;
g_mutex_init (&window->lock);
window->is_drawing = FALSE;
g_weak_ref_init (&window->context_ref, NULL);
g_mutex_init (&window->priv->sync_message_lock);
g_cond_init (&window->priv->sync_message_cond);
window->main_context = g_main_context_new ();
priv->loop = g_main_loop_new (window->main_context, FALSE);
}
static void
gst_gl_window_class_init (GstGLWindowClass * klass)
{
klass->open = GST_DEBUG_FUNCPTR (gst_gl_window_default_open);
klass->close = GST_DEBUG_FUNCPTR (gst_gl_window_default_close);
klass->run = GST_DEBUG_FUNCPTR (gst_gl_window_default_run);
klass->quit = GST_DEBUG_FUNCPTR (gst_gl_window_default_quit);
klass->draw = GST_DEBUG_FUNCPTR (gst_gl_window_default_draw);
klass->send_message = GST_DEBUG_FUNCPTR (gst_gl_window_default_send_message);
klass->send_message_async =
GST_DEBUG_FUNCPTR (gst_gl_window_default_send_message_async);
klass->has_output_surface =
GST_DEBUG_FUNCPTR (gst_gl_window_default_has_output_surface);
G_OBJECT_CLASS (klass)->finalize = gst_gl_window_finalize;
/**
* GstGLWindow::mouse-event:
* @object: the #GstGLWindow
* @id: the name of the event
* @button: the id of the button
* @x: the x coordinate of the mouse event
* @y: the y coordinate of the mouse event
*
* Will be emitted when a mouse event is received by the GstGLwindow.
*
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* Since: 1.6
*/
gst_gl_window_signals[EVENT_MOUSE_SIGNAL] =
g_signal_new ("mouse-event", G_TYPE_FROM_CLASS (klass),
G_SIGNAL_RUN_LAST, 0, NULL, NULL, NULL, G_TYPE_NONE, 4, G_TYPE_STRING,
G_TYPE_INT, G_TYPE_DOUBLE, G_TYPE_DOUBLE);
/**
* GstGLWindow::key-event:
* @object: the #GstGLWindow
* @id: the name of the event
* @key: the id of the key pressed
*
* Will be emitted when a key event is received by the GstGLwindow.
*
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* Since: 1.6
*/
gst_gl_window_signals[EVENT_KEY_SIGNAL] =
g_signal_new ("key-event", G_TYPE_FROM_CLASS (klass),
G_SIGNAL_RUN_LAST, 0, NULL, NULL, NULL, G_TYPE_NONE, 2, G_TYPE_STRING,
G_TYPE_STRING);
/**
* GstGLWindow::scroll-event:
* @object: the #GstGLWindow
* @x: the x coordinate of the mouse event
* @y: the y coordinate of the mouse event
* @delta_x: the x offset of the scroll event
* @delta_y: the y offset of the scroll event
*
* Will be emitted when a mouse scroll event is received by the GstGLwindow.
*
* Since: 1.18
*/
gst_gl_window_signals[EVENT_SCROLL_SIGNAL] =
g_signal_new ("scroll-event", G_TYPE_FROM_CLASS (klass),
G_SIGNAL_RUN_LAST, 0, NULL, NULL, g_cclosure_marshal_generic,
G_TYPE_NONE, 4, G_TYPE_DOUBLE, G_TYPE_DOUBLE, G_TYPE_DOUBLE,
G_TYPE_DOUBLE);
/**
* GstGLWindow::window-handle-changed:
* @object: the #GstGLWindow
*
* Will be emitted when the window handle has been set into the native
* implementation, but before the context is re-activated. By using this
* signal, elements can refresh associated resource without relying on
* direct handle comparision.
*
* Since: 1.20
*/
gst_gl_window_signals[WINDOW_HANDLE_CHANGED_SIGNAL] =
g_signal_new ("window-handle_changed", G_TYPE_FROM_CLASS (klass),
G_SIGNAL_RUN_LAST, 0, NULL, NULL, g_cclosure_marshal_generic,
G_TYPE_NONE, 0);
_init_debug ();
}
/**
* gst_gl_window_new:
* @display: a #GstGLDisplay
*
* Returns: (transfer full): a new #GstGLWindow using @display's connection
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*
* Since: 1.4
*/
GstGLWindow *
gst_gl_window_new (GstGLDisplay * display)
{
GstGLWindow *window = NULL;
const gchar *user_choice;
g_return_val_if_fail (display != NULL, NULL);
_init_debug ();
user_choice = g_getenv ("GST_GL_WINDOW");
GST_INFO ("creating a window, user choice:%s", user_choice);
#if GST_GL_HAVE_WINDOW_COCOA
if (!window && (!user_choice || g_strstr_len (user_choice, 5, "cocoa")))
window = GST_GL_WINDOW (gst_gl_window_cocoa_new (display));
#endif
#if GST_GL_HAVE_WINDOW_X11
if (!window && (!user_choice || g_strstr_len (user_choice, 3, "x11")))
window = GST_GL_WINDOW (gst_gl_window_x11_new (display));
#endif
#if GST_GL_HAVE_WINDOW_WIN32
if (!window && (!user_choice || g_strstr_len (user_choice, 5, "win32")))
window = GST_GL_WINDOW (gst_gl_window_win32_new (display));
#endif
#if GST_GL_HAVE_WINDOW_WAYLAND
if (!window && (!user_choice || g_strstr_len (user_choice, 7, "wayland")))
window = GST_GL_WINDOW (gst_gl_window_wayland_egl_new (display));
#endif
#if GST_GL_HAVE_WINDOW_DISPMANX
if (!window && (!user_choice || g_strstr_len (user_choice, 8, "dispmanx")))
window = GST_GL_WINDOW (gst_gl_window_dispmanx_egl_new (display));
#endif
#if GST_GL_HAVE_WINDOW_ANDROID
if (!window && (!user_choice || g_strstr_len (user_choice, 7, "android")))
window = GST_GL_WINDOW (gst_gl_window_android_egl_new (display));
#endif
#if GST_GL_HAVE_WINDOW_EAGL
if (!window && (!user_choice || g_strstr_len (user_choice, 4, "eagl")))
window = GST_GL_WINDOW (gst_gl_window_eagl_new (display));
#endif
#if GST_GL_HAVE_WINDOW_VIV_FB
if (!window && (!user_choice || g_strstr_len (user_choice, 6, "viv-fb")))
window = GST_GL_WINDOW (gst_gl_window_viv_fb_egl_new (display));
#endif
#if GST_GL_HAVE_WINDOW_GBM
if (!window && (!user_choice || g_strstr_len (user_choice, 3, "gbm")))
window = GST_GL_WINDOW (gst_gl_window_gbm_egl_new (display));
#endif
#if GST_GL_HAVE_WINDOW_WINRT
if (!window && (!user_choice || g_strstr_len (user_choice, 5, "winrt")))
window = GST_GL_WINDOW (gst_gl_window_winrt_egl_new (display));
#endif
if (!window) {
/* subclass returned a NULL window */
GST_WARNING ("Could not create window. user specified %s, creating dummy"
" window", user_choice ? user_choice : "(null)");
window = GST_GL_WINDOW (gst_gl_dummy_window_new ());
}
window->display = gst_object_ref (display);
return window;
}
static void
gst_gl_window_finalize (GObject * object)
{
GstGLWindow *window = GST_GL_WINDOW (object);
GstGLWindowPrivate *priv = window->priv;
gst_gl_display_remove_window (window->display, window);
if (priv->loop)
g_main_loop_unref (priv->loop);
if (window->main_context)
g_main_context_unref (window->main_context);
window->main_context = NULL;
g_weak_ref_clear (&window->context_ref);
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g_mutex_clear (&window->lock);
g_mutex_clear (&window->priv->sync_message_lock);
g_cond_clear (&window->priv->sync_message_cond);
gst_object_unref (window->display);
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G_OBJECT_CLASS (gst_gl_window_parent_class)->finalize (object);
}
typedef struct _GstSetWindowHandleCb
{
GstGLWindow *window;
guintptr handle;
} GstSetWindowHandleCb;
static void
_set_window_handle_cb (GstSetWindowHandleCb * data)
{
GstGLContext *context = gst_gl_window_get_context (data->window);
GstGLWindowClass *window_class = GST_GL_WINDOW_GET_CLASS (data->window);
GThread *thread = NULL;
/* deactivate if necessary */
if (context) {
thread = gst_gl_context_get_thread (context);
if (thread) {
/* This is only thread safe iff the context thread == g_thread_self() */
g_assert (thread == g_thread_self ());
gst_gl_context_activate (context, FALSE);
}
}
window_class->set_window_handle (data->window, data->handle);
/* Let's assume users don't call this without a new handle, this is the
* safest since we don't know the nature of the handle and direct
* comparision might not be safe */
g_signal_emit (data->window,
gst_gl_window_signals[WINDOW_HANDLE_CHANGED_SIGNAL], 0, NULL);
/* reactivate */
if (context && thread)
gst_gl_context_activate (context, TRUE);
if (context)
gst_object_unref (context);
if (thread)
g_thread_unref (thread);
}
static void
_free_swh_cb (GstSetWindowHandleCb * data)
{
gst_object_unref (data->window);
g_free (data);
}
/**
* gst_gl_window_set_window_handle:
* @window: a #GstGLWindow
* @handle: handle to the window
*
* Sets the window that this @window should render into. Some implementations
* require this to be called with a valid handle before drawing can commence.
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*
* Since: 1.4
*/
void
gst_gl_window_set_window_handle (GstGLWindow * window, guintptr handle)
{
GstGLWindowClass *window_class;
GstSetWindowHandleCb *data;
g_return_if_fail (GST_IS_GL_WINDOW (window));
g_return_if_fail (handle != 0);
window_class = GST_GL_WINDOW_GET_CLASS (window);
g_return_if_fail (window_class->set_window_handle != NULL);
data = g_new (GstSetWindowHandleCb, 1);
data->window = gst_object_ref (window);
data->handle = handle;
/* FIXME: Move to a message which deactivates, calls implementation, activates */
gst_gl_window_send_message_async (window,
(GstGLWindowCB) _set_window_handle_cb, data,
(GDestroyNotify) _free_swh_cb);
/* window_class->set_window_handle (window, handle); */
}
static void
draw_cb (gpointer data)
{
GstGLWindow *window = GST_GL_WINDOW (data);
GstGLContext *context = gst_gl_window_get_context (window);
if (window->queue_resize) {
guint width, height;
gst_gl_window_get_surface_dimensions (window, &width, &height);
gst_gl_window_resize (window, width, height);
}
if (window->draw)
window->draw (window->draw_data);
gst_gl_context_swap_buffers (context);
gst_object_unref (context);
}
static void
gst_gl_window_default_draw (GstGLWindow * window)
{
gst_gl_window_send_message (window, (GstGLWindowCB) draw_cb, window);
}
/**
* gst_gl_window_draw:
* @window: a #GstGLWindow
*
* Redraw the window contents. Implementations should invoke the draw callback.
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*
* Since: 1.4
*/
void
gst_gl_window_draw (GstGLWindow * window)
{
GstGLWindowClass *window_class;
g_return_if_fail (GST_IS_GL_WINDOW (window));
window_class = GST_GL_WINDOW_GET_CLASS (window);
g_return_if_fail (window_class->draw != NULL);
/* avoid to overload the drawer */
if (window->is_drawing) {
return;
}
window_class->draw (window);
}
/**
* gst_gl_window_set_preferred_size:
* @window: a #GstGLWindow
* @width: new preferred width
* @height: new preferred height
*
* Set the preferred width and height of the window. Implementations are free
* to ignore this information.
*
* Since: 1.6
*/
void
gst_gl_window_set_preferred_size (GstGLWindow * window, gint width, gint height)
{
GstGLWindowClass *window_class;
g_return_if_fail (GST_IS_GL_WINDOW (window));
window_class = GST_GL_WINDOW_GET_CLASS (window);
if (window_class->set_preferred_size)
window_class->set_preferred_size (window, width, height);
}
/**
* gst_gl_window_show:
* @window: a #GstGLWindow
*
* Present the window to the screen.
*
* Since: 1.6
*/
void
gst_gl_window_show (GstGLWindow * window)
{
GstGLWindowClass *window_class;
g_return_if_fail (GST_IS_GL_WINDOW (window));
window_class = GST_GL_WINDOW_GET_CLASS (window);
if (window_class->show)
window_class->show (window);
}
static void
gst_gl_window_default_run (GstGLWindow * window)
{
GstGLWindowPrivate *priv = window->priv;
g_main_loop_run (priv->loop);
}
/**
* gst_gl_window_run:
* @window: a #GstGLWindow
*
* Start the execution of the runloop.
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*
* Since: 1.4
*/
void
gst_gl_window_run (GstGLWindow * window)
{
GstGLWindowClass *window_class;
g_return_if_fail (GST_IS_GL_WINDOW (window));
window_class = GST_GL_WINDOW_GET_CLASS (window);
g_return_if_fail (window_class->run != NULL);
window_class->run (window);
}
static void
window_default_quit_func (GstGLWindow * window)
{
gst_gl_display_remove_window (window->display, window);
g_main_loop_quit (window->priv->loop);
}
static void
gst_gl_window_default_quit (GstGLWindow * window)
{
gst_gl_window_send_message_async (window,
(GstGLWindowCB) window_default_quit_func, gst_object_ref (window),
gst_object_unref);
}
/**
* gst_gl_window_quit:
* @window: a #GstGLWindow
*
* Quit the runloop's execution.
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*
* Since: 1.4
*/
void
gst_gl_window_quit (GstGLWindow * window)
{
GstGLWindowClass *window_class;
g_return_if_fail (GST_IS_GL_WINDOW (window));
window_class = GST_GL_WINDOW_GET_CLASS (window);
g_return_if_fail (window_class->quit != NULL);
GST_GL_WINDOW_LOCK (window);
window_class->quit (window);
GST_INFO ("quit sent to gl window loop");
GST_GL_WINDOW_UNLOCK (window);
}
typedef struct _GstGLSyncMessage
{
GstGLWindow *window;
gboolean fired;
GstGLWindowCB callback;
gpointer data;
} GstGLSyncMessage;
static void
_run_message_sync (GstGLSyncMessage * message)
{
if (message->callback)
message->callback (message->data);
g_mutex_lock (&message->window->priv->sync_message_lock);
message->fired = TRUE;
g_cond_broadcast (&message->window->priv->sync_message_cond);
g_mutex_unlock (&message->window->priv->sync_message_lock);
}
void
gst_gl_window_default_send_message (GstGLWindow * window,
GstGLWindowCB callback, gpointer data)
{
GstGLSyncMessage message;
message.window = window;
message.callback = callback;
message.data = data;
message.fired = FALSE;
gst_gl_window_send_message_async (window, (GstGLWindowCB) _run_message_sync,
&message, NULL);
g_mutex_lock (&window->priv->sync_message_lock);
/* block until opengl calls have been executed in the gl thread */
while (!message.fired)
g_cond_wait (&window->priv->sync_message_cond,
&window->priv->sync_message_lock);
g_mutex_unlock (&window->priv->sync_message_lock);
}
/**
* gst_gl_window_send_message:
* @window: a #GstGLWindow
* @callback: (scope async): function to invoke
* @data: (closure): data to invoke @callback with
*
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* Invoke @callback with data on the window thread. @callback is guaranteed to
* have executed when this function returns.
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*
* Since: 1.4
*/
void
gst_gl_window_send_message (GstGLWindow * window, GstGLWindowCB callback,
gpointer data)
{
GstGLWindowClass *window_class;
g_return_if_fail (GST_IS_GL_WINDOW (window));
g_return_if_fail (callback != NULL);
window_class = GST_GL_WINDOW_GET_CLASS (window);
g_return_if_fail (window_class->send_message != NULL);
window_class->send_message (window, callback, data);
}
typedef struct _GstGLAsyncMessage
{
GstGLWindowCB callback;
gpointer data;
GDestroyNotify destroy;
} GstGLAsyncMessage;
static gboolean
_run_message_async (GstGLAsyncMessage * message)
{
if (message->callback)
message->callback (message->data);
if (message->destroy)
message->destroy (message->data);
g_free (message);
return FALSE;
}
static void
gst_gl_window_default_send_message_async (GstGLWindow * window,
GstGLWindowCB callback, gpointer data, GDestroyNotify destroy)
{
GstGLAsyncMessage *message = g_new (GstGLAsyncMessage, 1);
message->callback = callback;
message->data = data;
message->destroy = destroy;
g_main_context_invoke (window->main_context, (GSourceFunc) _run_message_async,
message);
}
static gboolean
gst_gl_window_default_has_output_surface (GstGLWindow * window)
{
return TRUE;
}
/**
* gst_gl_window_has_output_surface:
* @window: a #GstGLWindow
*
* Query whether @window has output surface or not
*
* Returns: %TRUE if @window has useable output surface
*
* Since: 1.18
*/
gboolean
gst_gl_window_has_output_surface (GstGLWindow * window)
{
GstGLWindowClass *window_class;
g_return_val_if_fail (GST_IS_GL_WINDOW (window), FALSE);
window_class = GST_GL_WINDOW_GET_CLASS (window);
g_assert (window_class->has_output_surface);
return window_class->has_output_surface (window);
}
/**
* gst_gl_window_send_message_async:
* @window: a #GstGLWindow
* @callback: (scope async): function to invoke
* @data: (closure): data to invoke @callback with
* @destroy: called when @data is not needed anymore
*
* Invoke @callback with @data on the window thread. The callback may not
* have been executed when this function returns.
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*
* Since: 1.4
*/
void
gst_gl_window_send_message_async (GstGLWindow * window, GstGLWindowCB callback,
gpointer data, GDestroyNotify destroy)
{
GstGLWindowClass *window_class;
g_return_if_fail (GST_IS_GL_WINDOW (window));
g_return_if_fail (callback != NULL);
window_class = GST_GL_WINDOW_GET_CLASS (window);
g_return_if_fail (window_class->send_message_async != NULL);
window_class->send_message_async (window, callback, data, destroy);
}
/**
* gst_gl_window_set_draw_callback:
* @window: a #GstGLWindow
* @callback: (scope notified): function to invoke
* @data: (closure): data to invoke @callback with
* @destroy_notify: called when @data is not needed any more
*
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* Sets the draw callback called every time gst_gl_window_draw() is called
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*
* Since: 1.4
*/
void
gst_gl_window_set_draw_callback (GstGLWindow * window, GstGLWindowCB callback,
gpointer data, GDestroyNotify destroy_notify)
{
g_return_if_fail (GST_IS_GL_WINDOW (window));
GST_GL_WINDOW_LOCK (window);
if (window->draw_notify)
window->draw_notify (window->draw_data);
window->draw = callback;
window->draw_data = data;
window->draw_notify = destroy_notify;
GST_GL_WINDOW_UNLOCK (window);
}
/**
* gst_gl_window_set_resize_callback:
* @window: a #GstGLWindow
* @callback: (scope notified): function to invoke
* @data: (closure): data to invoke @callback with
* @destroy_notify: called when @data is not needed any more
*
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* Sets the resize callback called every time a resize of the window occurs.
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*
* Since: 1.4
*/
void
gst_gl_window_set_resize_callback (GstGLWindow * window,
GstGLWindowResizeCB callback, gpointer data, GDestroyNotify destroy_notify)
{
g_return_if_fail (GST_IS_GL_WINDOW (window));
GST_GL_WINDOW_LOCK (window);
if (window->resize_notify)
window->resize_notify (window->resize_data);
window->resize = callback;
window->resize_data = data;
window->resize_notify = destroy_notify;
GST_GL_WINDOW_UNLOCK (window);
}
/**
* gst_gl_window_set_close_callback:
* @window: a #GstGLWindow
* @callback: (scope notified): function to invoke
* @data: (closure): data to invoke @callback with
* @destroy_notify: called when @data is not needed any more
*
* Sets the callback called when the window is about to close.
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*
* Since: 1.4
*/
void
gst_gl_window_set_close_callback (GstGLWindow * window, GstGLWindowCB callback,
gpointer data, GDestroyNotify destroy_notify)
{
g_return_if_fail (GST_IS_GL_WINDOW (window));
GST_GL_WINDOW_LOCK (window);
if (window->close_notify)
window->close_notify (window->close_data);
window->close = callback;
window->close_data = data;
window->close_notify = destroy_notify;
GST_GL_WINDOW_UNLOCK (window);
}
/**
* gst_gl_window_get_display:
* @window: a #GstGLWindow
*
* Returns: the windowing system display handle for this @window
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*
* Since: 1.4
*/
guintptr
gst_gl_window_get_display (GstGLWindow * window)
{
GstGLWindowClass *window_class;
g_return_val_if_fail (GST_IS_GL_WINDOW (window), 0);
window_class = GST_GL_WINDOW_GET_CLASS (window);
g_return_val_if_fail (window_class->get_display != NULL, 0);
return window_class->get_display (window);
}
/**
* gst_gl_window_get_window_handle:
* @window: a #GstGLWindow
*
* Returns: the window handle we are currently rendering into
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*
* Since: 1.4
*/
guintptr
gst_gl_window_get_window_handle (GstGLWindow * window)
{
GstGLWindowClass *window_class;
g_return_val_if_fail (GST_IS_GL_WINDOW (window), 0);
window_class = GST_GL_WINDOW_GET_CLASS (window);
g_return_val_if_fail (window_class->get_window_handle != NULL, 0);
return window_class->get_window_handle (window);
}
/**
* gst_gl_window_get_context:
* @window: a #GstGLWindow
*
* Returns: (transfer full): the #GstGLContext associated with this @window
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*
* Since: 1.4
*/
GstGLContext *
gst_gl_window_get_context (GstGLWindow * window)
{
g_return_val_if_fail (GST_IS_GL_WINDOW (window), NULL);
return (GstGLContext *) g_weak_ref_get (&window->context_ref);
}
/**
* gst_gl_window_get_surface_dimensions:
* @window: a #GstGLWindow
* @width: (out): resulting surface width
* @height: (out): resulting surface height
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*
* Since: 1.6
*/
void
gst_gl_window_get_surface_dimensions (GstGLWindow * window, guint * width,
guint * height)
{
GST_GL_WINDOW_LOCK (window);
if (width)
*width = window->priv->surface_width;
if (height)
*height = window->priv->surface_height;
GST_GL_WINDOW_UNLOCK (window);
}
void
gst_gl_window_send_key_event (GstGLWindow * window, const char *event_type,
const char *key_str)
{
g_signal_emit (window, gst_gl_window_signals[EVENT_KEY_SIGNAL], 0,
event_type, key_str);
}
void
gst_gl_window_send_mouse_event (GstGLWindow * window, const char *event_type,
int button, double posx, double posy)
{
g_signal_emit (window, gst_gl_window_signals[EVENT_MOUSE_SIGNAL], 0,
event_type, button, posx, posy);
}
/**
* gst_gl_window_send_scroll_event:
* @window: a #GstGLWindow
* @posx: x position of the mouse cursor
* @posy: y position of the mouse cursor
* @delta_x: the x offset of the scroll event
* @delta_y: the y offset of the scroll event
*
* Notify a @window about a scroll event. A scroll signal holding the event
* coordinates will be emitted.
*
* Since: 1.18
*/
void
gst_gl_window_send_scroll_event (GstGLWindow * window,
double posx, double posy, double delta_x, double delta_y)
{
g_signal_emit (window, gst_gl_window_signals[EVENT_SCROLL_SIGNAL], 0,
posx, posy, delta_x, delta_y);
}
/**
* gst_gl_window_handle_events:
* @window: a #GstGLWindow
* @handle_events: a #gboolean indicating if events should be handled or not.
*
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* Tell a @window that it should handle events from the window system. These
* events are forwarded upstream as navigation events. In some window systems
* events are not propagated in the window hierarchy if a client is listening
* for them. This method allows you to disable events handling completely
* from the @window.
*/
void
gst_gl_window_handle_events (GstGLWindow * window, gboolean handle_events)
{
GstGLWindowClass *window_class;
g_return_if_fail (GST_IS_GL_WINDOW (window));
window_class = GST_GL_WINDOW_GET_CLASS (window);
if (window_class->handle_events)
window_class->handle_events (window, handle_events);
}
/**
* gst_gl_window_set_render_rectangle:
* @window: a #GstGLWindow
* @x: x position
* @y: y position
* @width: width
* @height: height
*
* Tell a @window that it should render into a specific region of the window
* according to the #GstVideoOverlay interface.
*
* Returns: whether the specified region could be set
*/
gboolean
gst_gl_window_set_render_rectangle (GstGLWindow * window, gint x, gint y,
gint width, gint height)
{
GstGLWindowClass *window_class;
gboolean ret = FALSE;
g_return_val_if_fail (GST_IS_GL_WINDOW (window), FALSE);
window_class = GST_GL_WINDOW_GET_CLASS (window);
GST_GL_WINDOW_LOCK (window);
/* When x/y is smaller then reset the render rectangle */
if (x < 0 || y < 0) {
x = y = 0;
width = window->priv->surface_width;
height = window->priv->surface_height;
}
if (x < 0 || y < 0 || width <= 0 || height <= 0) {
GST_GL_WINDOW_UNLOCK (window);
return FALSE;
}
if (window_class->set_render_rectangle)
ret = window_class->set_render_rectangle (window, x, y, width, height);
GST_GL_WINDOW_UNLOCK (window);
return ret;
}
/**
* gst_gl_window_queue_resize:
* @window: a #GstGLWindow
*
* Queue resizing of @window.
*/
void
gst_gl_window_queue_resize (GstGLWindow * window)
{
GstGLWindowClass *window_class;
g_return_if_fail (GST_IS_GL_WINDOW (window));
window_class = GST_GL_WINDOW_GET_CLASS (window);
window->queue_resize = TRUE;
if (window_class->queue_resize)
window_class->queue_resize (window);
}
struct resize_data
{
GstGLWindow *window;
guint width, height;
};
static void
_on_resize (gpointer data)
{
struct resize_data *resize = data;
GST_GL_WINDOW_LOCK (resize->window);
if (resize->window->resize)
resize->window->resize (resize->window->resize_data, resize->width,
resize->height);
resize->window->priv->surface_width = resize->width;
resize->window->priv->surface_height = resize->height;
GST_GL_WINDOW_UNLOCK (resize->window);
resize->window->queue_resize = FALSE;
}
/**
* gst_gl_window_resize:
* @window: a #GstGLWindow
* @width: new width
* @height: new height
*
* Resize @window to the given @width and @height.
*/
void
gst_gl_window_resize (GstGLWindow * window, guint width, guint height)
{
struct resize_data resize = { 0, };
g_return_if_fail (GST_IS_GL_WINDOW (window));
resize.window = window;
resize.width = width;
resize.height = height;
gst_gl_window_send_message (window, (GstGLWindowCB) _on_resize, &resize);
}
/**
* gst_gl_window_controls_viewport:
* @window: a #GstGLWindow
*
* Checks if @window controls the GL viewport.
*
* Returns: %TRUE if @window controls the GL viewport, otherwise %FALSE
*
* Since: 1.16
*/
gboolean
gst_gl_window_controls_viewport (GstGLWindow * window)
{
GstGLWindowClass *window_class;
g_return_val_if_fail (GST_IS_GL_WINDOW (window), FALSE);
window_class = GST_GL_WINDOW_GET_CLASS (window);
if (!window_class->controls_viewport)
return FALSE;
return window_class->controls_viewport (window);
}
static GType gst_gl_dummy_window_get_type (void);
static gboolean
gst_gl_dummy_window_has_output_surface (GstGLWindow * window)
{
return FALSE;
}
G_DEFINE_TYPE (GstGLDummyWindow, gst_gl_dummy_window, GST_TYPE_GL_WINDOW);
static void
gst_gl_dummy_window_set_window_handle (GstGLWindow * window, guintptr handle)
{
GstGLDummyWindow *dummy = (GstGLDummyWindow *) window;
dummy->handle = handle;
}
static guintptr
gst_gl_dummy_window_get_window_handle (GstGLWindow * window)
{
GstGLDummyWindow *dummy = (GstGLDummyWindow *) window;
return (guintptr) dummy->handle;
}
static guintptr
gst_gl_dummy_window_get_display (GstGLWindow * window)
{
return 0;
}
static void
gst_gl_dummy_window_class_init (GstGLDummyWindowClass * klass)
{
GstGLWindowClass *window_class = (GstGLWindowClass *) klass;
window_class->get_display =
GST_DEBUG_FUNCPTR (gst_gl_dummy_window_get_display);
window_class->get_window_handle =
GST_DEBUG_FUNCPTR (gst_gl_dummy_window_get_window_handle);
window_class->set_window_handle =
GST_DEBUG_FUNCPTR (gst_gl_dummy_window_set_window_handle);
window_class->has_output_surface =
GST_DEBUG_FUNCPTR (gst_gl_dummy_window_has_output_surface);
}
static void
gst_gl_dummy_window_init (GstGLDummyWindow * dummy)
{
dummy->handle = 0;
}
static GstGLDummyWindow *
gst_gl_dummy_window_new (void)
{
GstGLDummyWindow *window;
window = g_object_new (gst_gl_dummy_window_get_type (), NULL);
gst_object_ref_sink (window);
return window;
}