mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
synced 2024-09-08 13:18:52 +00:00
731 lines
19 KiB
C
731 lines
19 KiB
C
/*
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* GStreamer
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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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/**
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* SECTION:gstglwindow
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* @short_description: window/surface abstraction
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* @title: GstGLWindow
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* @see_also: #GstGLContext, #GstGLDisplay
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*
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* GstGLWindow represents a window that elements can render into. A window can
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* either be a user visible window (onscreen) or hidden (offscreen).
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*/
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#if HAVE_CONFIG_H
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# include "config.h"
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#endif
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#include <gmodule.h>
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#include <stdio.h>
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#include "gl.h"
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#include "gstglwindow.h"
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/* FIXME make this work with windowless contexts */
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#if GST_GL_HAVE_WINDOW_X11
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#include "x11/gstglwindow_x11.h"
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#endif
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#if GST_GL_HAVE_WINDOW_WIN32
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#include "win32/gstglwindow_win32.h"
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#endif
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#if GST_GL_HAVE_WINDOW_COCOA
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#include "cocoa/gstglwindow_cocoa.h"
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#endif
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#if GST_GL_HAVE_WINDOW_WAYLAND
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#include "wayland/gstglwindow_wayland_egl.h"
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#endif
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#if GST_GL_HAVE_WINDOW_ANDROID
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#include "android/gstglwindow_android_egl.h"
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#endif
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#if GST_GL_HAVE_WINDOW_EAGL
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#include "eagl/gstglwindow_eagl.h"
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#endif
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#if GST_GL_HAVE_WINDOW_DISPMANX
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#include "dispmanx/gstglwindow_dispmanx_egl.h"
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#endif
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#define USING_OPENGL(context) (gst_gl_context_check_gl_version (context, GST_GL_API_OPENGL, 1, 0))
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#define USING_OPENGL3(context) (gst_gl_context_check_gl_version (context, GST_GL_API_OPENGL3, 3, 1))
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#define USING_GLES(context) (gst_gl_context_check_gl_version (context, GST_GL_API_GLES, 1, 0))
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#define USING_GLES2(context) (gst_gl_context_check_gl_version (context, GST_GL_API_GLES2, 2, 0))
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#define USING_GLES3(context) (gst_gl_context_check_gl_version (context, GST_GL_API_GLES2, 3, 0))
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#define GST_CAT_DEFAULT gst_gl_window_debug
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GST_DEBUG_CATEGORY (GST_CAT_DEFAULT);
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#define gst_gl_window_parent_class parent_class
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G_DEFINE_ABSTRACT_TYPE (GstGLWindow, gst_gl_window, GST_TYPE_OBJECT);
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#define GST_GL_WINDOW_GET_PRIVATE(o) \
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(G_TYPE_INSTANCE_GET_PRIVATE((o), GST_GL_TYPE_WINDOW, GstGLWindowPrivate))
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static void gst_gl_window_default_send_message (GstGLWindow * window,
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GstGLWindowCB callback, gpointer data);
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struct _GstGLWindowPrivate
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{
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GThread *gl_thread;
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gboolean alive;
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};
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static void gst_gl_window_finalize (GObject * object);
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typedef struct _GstGLDummyWindow
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{
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GstGLWindow parent;
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guintptr handle;
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GMainContext *main_context;
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GMainLoop *loop;
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} GstGLDummyWindow;
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typedef struct _GstGLDummyWindowCass
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{
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GstGLWindowClass parent;
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} GstGLDummyWindowClass;
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GstGLDummyWindow *gst_gl_dummy_window_new (void);
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GQuark
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gst_gl_window_error_quark (void)
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{
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return g_quark_from_static_string ("gst-gl-window-error-quark");
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}
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static void
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gst_gl_window_init (GstGLWindow * window)
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{
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window->priv = GST_GL_WINDOW_GET_PRIVATE (window);
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g_mutex_init (&window->lock);
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window->is_drawing = FALSE;
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g_weak_ref_init (&window->context_ref, NULL);
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}
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static void
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gst_gl_window_class_init (GstGLWindowClass * klass)
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{
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g_type_class_add_private (klass, sizeof (GstGLWindowPrivate));
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klass->send_message = GST_DEBUG_FUNCPTR (gst_gl_window_default_send_message);
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G_OBJECT_CLASS (klass)->finalize = gst_gl_window_finalize;
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}
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/**
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* gst_gl_window_new:
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* @display: a #GstGLDisplay
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*
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* Returns: (transfer full): a new #GstGLWindow using @display's connection
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*/
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GstGLWindow *
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gst_gl_window_new (GstGLDisplay * display)
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{
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GstGLWindow *window = NULL;
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const gchar *user_choice;
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static volatile gsize _init = 0;
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g_return_val_if_fail (display != NULL, NULL);
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if (g_once_init_enter (&_init)) {
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GST_DEBUG_CATEGORY_INIT (gst_gl_window_debug, "glwindow", 0,
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"glwindow element");
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g_once_init_leave (&_init, 1);
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}
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user_choice = g_getenv ("GST_GL_WINDOW");
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GST_INFO ("creating a window, user choice:%s", user_choice);
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#if GST_GL_HAVE_WINDOW_COCOA
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if (!window && (!user_choice || g_strstr_len (user_choice, 5, "cocoa")))
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window = GST_GL_WINDOW (gst_gl_window_cocoa_new ());
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#endif
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#if GST_GL_HAVE_WINDOW_X11
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if (!window && (!user_choice || g_strstr_len (user_choice, 3, "x11")))
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window = GST_GL_WINDOW (gst_gl_window_x11_new (display));
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#endif
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#if GST_GL_HAVE_WINDOW_WIN32
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if (!window && (!user_choice || g_strstr_len (user_choice, 5, "win32")))
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window = GST_GL_WINDOW (gst_gl_window_win32_new ());
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#endif
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#if GST_GL_HAVE_WINDOW_WAYLAND
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if (!window && (!user_choice || g_strstr_len (user_choice, 7, "wayland")))
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window = GST_GL_WINDOW (gst_gl_window_wayland_egl_new ());
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#endif
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#if GST_GL_HAVE_WINDOW_DISPMANX
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if (!window && (!user_choice || g_strstr_len (user_choice, 8, "dispmanx")))
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window = GST_GL_WINDOW (gst_gl_window_dispmanx_egl_new ());
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#endif
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#if GST_GL_HAVE_WINDOW_ANDROID
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if (!window && (!user_choice || g_strstr_len (user_choice, 7, "android")))
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window = GST_GL_WINDOW (gst_gl_window_android_egl_new ());
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#endif
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#if GST_GL_HAVE_WINDOW_EAGL
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if (!window && (!user_choice || g_strstr_len (user_choice, 4, "eagl")))
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window = GST_GL_WINDOW (gst_gl_window_eagl_new ());
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#endif
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if (!window) {
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/* subclass returned a NULL window */
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GST_WARNING ("Could not create window. user specified %s, creating dummy"
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" window", user_choice ? user_choice : "(null)");
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window = GST_GL_WINDOW (gst_gl_dummy_window_new ());
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}
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window->display = gst_object_ref (display);
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return window;
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}
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static void
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gst_gl_window_finalize (GObject * object)
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{
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GstGLWindow *window = GST_GL_WINDOW (object);
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g_weak_ref_clear (&window->context_ref);
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g_mutex_clear (&window->lock);
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gst_object_unref (window->display);
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G_OBJECT_CLASS (gst_gl_window_parent_class)->finalize (object);
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}
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/**
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* gst_gl_window_set_window_handle:
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* @window: a #GstGLWindow
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* @handle: handle to the window
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*
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* Sets the window that this @window should render into. Some implementations
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* require this to be called with a valid handle before drawing can commence.
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*/
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void
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gst_gl_window_set_window_handle (GstGLWindow * window, guintptr handle)
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{
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GstGLWindowClass *window_class;
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g_return_if_fail (GST_GL_IS_WINDOW (window));
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g_return_if_fail (handle != 0);
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window_class = GST_GL_WINDOW_GET_CLASS (window);
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g_return_if_fail (window_class->set_window_handle != NULL);
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window_class->set_window_handle (window, handle);
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}
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/**
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* gst_gl_window_draw_unlocked:
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* @window: a #GstGLWindow
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* @width: requested width of the window
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* @height: requested height of the window
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*
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* Redraw the window contents. Implementations should invoke the draw callback.
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*/
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void
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gst_gl_window_draw_unlocked (GstGLWindow * window, guint width, guint height)
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{
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GstGLWindowClass *window_class;
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g_return_if_fail (GST_GL_IS_WINDOW (window));
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window_class = GST_GL_WINDOW_GET_CLASS (window);
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g_return_if_fail (window_class->draw_unlocked != NULL);
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window_class->draw_unlocked (window, width, height);
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}
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/**
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* gst_gl_window_draw:
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* @window: a #GstGLWindow
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* @width: requested width of the window
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* @height: requested height of the window
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*
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* Redraw the window contents. Implementations should invoke the draw callback.
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*/
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void
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gst_gl_window_draw (GstGLWindow * window, guint width, guint height)
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{
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GstGLWindowClass *window_class;
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g_return_if_fail (GST_GL_IS_WINDOW (window));
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window_class = GST_GL_WINDOW_GET_CLASS (window);
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g_return_if_fail (window_class->draw != NULL);
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/* avoid to overload the drawer */
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if (window->is_drawing) {
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return;
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}
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window_class->draw (window, width, height);
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}
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/**
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* gst_gl_window_run:
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* @window: a #GstGLWindow
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*
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* Start the execution of the runloop.
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*/
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void
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gst_gl_window_run (GstGLWindow * window)
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{
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GstGLWindowClass *window_class;
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g_return_if_fail (GST_GL_IS_WINDOW (window));
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window_class = GST_GL_WINDOW_GET_CLASS (window);
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g_return_if_fail (window_class->run != NULL);
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window->priv->alive = TRUE;
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window_class->run (window);
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}
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/**
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* gst_gl_window_quit:
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* @window: a #GstGLWindow
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*
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* Quit the runloop's execution.
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*/
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void
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gst_gl_window_quit (GstGLWindow * window)
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{
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GstGLWindowClass *window_class;
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g_return_if_fail (GST_GL_IS_WINDOW (window));
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window_class = GST_GL_WINDOW_GET_CLASS (window);
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g_return_if_fail (window_class->quit != NULL);
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GST_GL_WINDOW_LOCK (window);
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window->priv->alive = FALSE;
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window_class->quit (window);
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GST_INFO ("quit sent to gl window loop");
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GST_GL_WINDOW_UNLOCK (window);
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}
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typedef struct _GstGLSyncMessage
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{
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GMutex lock;
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GCond cond;
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gboolean fired;
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GstGLWindowCB callback;
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gpointer data;
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} GstGLSyncMessage;
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static void
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_run_message_sync (GstGLSyncMessage * message)
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{
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g_mutex_lock (&message->lock);
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if (message->callback)
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message->callback (message->data);
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message->fired = TRUE;
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g_cond_signal (&message->cond);
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g_mutex_unlock (&message->lock);
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}
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void
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gst_gl_window_default_send_message (GstGLWindow * window,
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GstGLWindowCB callback, gpointer data)
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{
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GstGLSyncMessage message;
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message.callback = callback;
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message.data = data;
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message.fired = FALSE;
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g_mutex_init (&message.lock);
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g_cond_init (&message.cond);
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gst_gl_window_send_message_async (window, (GstGLWindowCB) _run_message_sync,
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&message, NULL);
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g_mutex_lock (&message.lock);
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/* block until opengl calls have been executed in the gl thread */
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while (!message.fired)
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g_cond_wait (&message.cond, &message.lock);
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g_mutex_unlock (&message.lock);
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g_mutex_clear (&message.lock);
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g_cond_clear (&message.cond);
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}
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/**
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* gst_gl_window_send_message:
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* @window: a #GstGLWindow
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* @callback: (scope async): function to invoke
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* @data: (closure): data to invoke @callback with
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*
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* Invoke @callback with data on the window thread. @callback is guarenteed to
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* have executed when this function returns.
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*/
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void
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gst_gl_window_send_message (GstGLWindow * window, GstGLWindowCB callback,
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gpointer data)
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{
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GstGLWindowClass *window_class;
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g_return_if_fail (GST_GL_IS_WINDOW (window));
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g_return_if_fail (callback != NULL);
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window_class = GST_GL_WINDOW_GET_CLASS (window);
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g_return_if_fail (window_class->send_message != NULL);
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window_class->send_message (window, callback, data);
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}
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/**
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* gst_gl_window_send_message_async:
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* @window: a #GstGLWindow
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* @callback: (scope async): function to invoke
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* @data: (closure): data to invoke @callback with
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* @destroy: (destroy): called when @data is not needed anymore
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*
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* Invoke @callback with @data on the window thread. The callback may not
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* have been executed when this function returns.
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*/
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void
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gst_gl_window_send_message_async (GstGLWindow * window, GstGLWindowCB callback,
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gpointer data, GDestroyNotify destroy)
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{
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GstGLWindowClass *window_class;
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g_return_if_fail (GST_GL_IS_WINDOW (window));
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g_return_if_fail (callback != NULL);
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window_class = GST_GL_WINDOW_GET_CLASS (window);
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g_return_if_fail (window_class->send_message_async != NULL);
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window_class->send_message_async (window, callback, data, destroy);
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}
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/**
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* gst_gl_window_set_draw_callback:
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* @window: a #GstGLWindow
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* @callback: (scope notified): function to invoke
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* @data: (closure): data to invoke @callback with
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* @destroy_notify: (destroy): called when @data is not needed any more
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*
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* Sets the draw callback called everytime gst_gl_window_draw() is called
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*/
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void
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gst_gl_window_set_draw_callback (GstGLWindow * window, GstGLWindowCB callback,
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gpointer data, GDestroyNotify destroy_notify)
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{
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g_return_if_fail (GST_GL_IS_WINDOW (window));
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GST_GL_WINDOW_LOCK (window);
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if (window->draw_notify)
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window->draw_notify (window->draw_data);
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window->draw = callback;
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window->draw_data = data;
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window->draw_notify = destroy_notify;
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GST_GL_WINDOW_UNLOCK (window);
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}
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/**
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* gst_gl_window_set_resize_callback:
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* @window: a #GstGLWindow
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* @callback: (scope notified): function to invoke
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* @data: (closure): data to invoke @callback with
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* @destroy_notify: (destroy): called when @data is not needed any more
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*
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* Sets the resize callback called everytime a resize of the window occurs.
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*/
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void
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gst_gl_window_set_resize_callback (GstGLWindow * window,
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GstGLWindowResizeCB callback, gpointer data, GDestroyNotify destroy_notify)
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{
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g_return_if_fail (GST_GL_IS_WINDOW (window));
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GST_GL_WINDOW_LOCK (window);
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if (window->resize_notify)
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window->resize_notify (window->resize_data);
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window->resize = callback;
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window->resize_data = data;
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window->resize_notify = destroy_notify;
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GST_GL_WINDOW_UNLOCK (window);
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}
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/**
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* gst_gl_window_set_close_callback:
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* @window: a #GstGLWindow
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* @callback: (scope notified): function to invoke
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* @data: (closure): data to invoke @callback with
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* @destroy_notify: (destroy): called when @data is not needed any more
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*
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* Sets the callback called when the window is about to close.
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*/
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void
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gst_gl_window_set_close_callback (GstGLWindow * window, GstGLWindowCB callback,
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gpointer data, GDestroyNotify destroy_notify)
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{
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g_return_if_fail (GST_GL_IS_WINDOW (window));
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GST_GL_WINDOW_LOCK (window);
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if (window->close_notify)
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window->close_notify (window->close_data);
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window->close = callback;
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window->close_data = data;
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window->close_notify = destroy_notify;
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GST_GL_WINDOW_UNLOCK (window);
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}
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|
|
/**
|
|
* gst_gl_window_is_running:
|
|
* @window: a #GstGLWindow
|
|
*
|
|
* Whether the runloop is running
|
|
*/
|
|
gboolean
|
|
gst_gl_window_is_running (GstGLWindow * window)
|
|
{
|
|
return window->priv->alive;
|
|
}
|
|
|
|
/**
|
|
* gst_gl_window_get_display:
|
|
* @window: a #GstGLWindow
|
|
*
|
|
* Returns: the windowing system display handle for this @window
|
|
*/
|
|
guintptr
|
|
gst_gl_window_get_display (GstGLWindow * window)
|
|
{
|
|
GstGLWindowClass *window_class;
|
|
|
|
g_return_val_if_fail (GST_GL_IS_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
|
|
*/
|
|
guintptr
|
|
gst_gl_window_get_window_handle (GstGLWindow * window)
|
|
{
|
|
GstGLWindowClass *window_class;
|
|
|
|
g_return_val_if_fail (GST_GL_IS_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
|
|
*/
|
|
GstGLContext *
|
|
gst_gl_window_get_context (GstGLWindow * window)
|
|
{
|
|
g_return_val_if_fail (GST_GL_IS_WINDOW (window), NULL);
|
|
|
|
return (GstGLContext *) g_weak_ref_get (&window->context_ref);
|
|
}
|
|
|
|
GType gst_gl_dummy_window_get_type (void);
|
|
|
|
G_DEFINE_TYPE (GstGLDummyWindow, gst_gl_dummy_window, GST_GL_TYPE_WINDOW);
|
|
|
|
static gboolean
|
|
gst_gl_dummy_window_open (GstGLWindow * window, GError ** error)
|
|
{
|
|
GstGLDummyWindow *dummy = (GstGLDummyWindow *) window;
|
|
|
|
dummy->main_context = g_main_context_new ();
|
|
dummy->loop = g_main_loop_new (dummy->main_context, FALSE);
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
static void
|
|
gst_gl_dummy_window_close (GstGLWindow * window)
|
|
{
|
|
GstGLDummyWindow *dummy = (GstGLDummyWindow *) window;
|
|
|
|
g_main_loop_unref (dummy->loop);
|
|
g_main_context_unref (dummy->main_context);
|
|
}
|
|
|
|
static void
|
|
gst_gl_dummy_window_quit (GstGLWindow * window)
|
|
{
|
|
GstGLDummyWindow *dummy = (GstGLDummyWindow *) window;
|
|
|
|
g_main_loop_quit (dummy->loop);
|
|
}
|
|
|
|
static void
|
|
gst_gl_dummy_window_run (GstGLWindow * window)
|
|
{
|
|
GstGLDummyWindow *dummy = (GstGLDummyWindow *) window;
|
|
|
|
g_main_loop_run (dummy->loop);
|
|
}
|
|
|
|
typedef struct _GstGLMessage
|
|
{
|
|
GstGLWindowCB callback;
|
|
gpointer data;
|
|
GDestroyNotify destroy;
|
|
} GstGLMessage;
|
|
|
|
static gboolean
|
|
_run_message (GstGLMessage * message)
|
|
{
|
|
if (message->callback)
|
|
message->callback (message->data);
|
|
|
|
if (message->destroy)
|
|
message->destroy (message->data);
|
|
|
|
g_slice_free (GstGLMessage, message);
|
|
|
|
return FALSE;
|
|
}
|
|
|
|
static void
|
|
gst_gl_dummy_window_send_message_async (GstGLWindow * window,
|
|
GstGLWindowCB callback, gpointer data, GDestroyNotify destroy)
|
|
{
|
|
GstGLDummyWindow *dummy;
|
|
GstGLMessage *message;
|
|
|
|
dummy = (GstGLDummyWindow *) window;
|
|
message = g_slice_new (GstGLMessage);
|
|
|
|
message->callback = callback;
|
|
message->data = data;
|
|
message->destroy = destroy;
|
|
|
|
g_main_context_invoke (dummy->main_context, (GSourceFunc) _run_message,
|
|
message);
|
|
}
|
|
|
|
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;
|
|
}
|
|
|
|
struct draw
|
|
{
|
|
GstGLDummyWindow *window;
|
|
guint width, height;
|
|
};
|
|
|
|
static void
|
|
draw_cb (gpointer data)
|
|
{
|
|
struct draw *draw_data = data;
|
|
GstGLDummyWindow *dummy = draw_data->window;
|
|
GstGLWindow *window = GST_GL_WINDOW (dummy);
|
|
GstGLContext *context = gst_gl_window_get_context (window);
|
|
GstGLContextClass *context_class = GST_GL_CONTEXT_GET_CLASS (context);
|
|
|
|
if (window->draw)
|
|
window->draw (window->draw_data);
|
|
|
|
context_class->swap_buffers (context);
|
|
|
|
gst_object_unref (context);
|
|
}
|
|
|
|
static void
|
|
gst_gl_dummy_window_draw (GstGLWindow * window, guint width, guint height)
|
|
{
|
|
struct draw draw_data;
|
|
|
|
draw_data.window = (GstGLDummyWindow *) window;
|
|
draw_data.width = width;
|
|
draw_data.height = height;
|
|
|
|
gst_gl_window_send_message (window, (GstGLWindowCB) draw_cb, &draw_data);
|
|
}
|
|
|
|
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->draw_unlocked = GST_DEBUG_FUNCPTR (gst_gl_dummy_window_draw);
|
|
window_class->draw = GST_DEBUG_FUNCPTR (gst_gl_dummy_window_draw);
|
|
window_class->run = GST_DEBUG_FUNCPTR (gst_gl_dummy_window_run);
|
|
window_class->quit = GST_DEBUG_FUNCPTR (gst_gl_dummy_window_quit);
|
|
window_class->send_message_async =
|
|
GST_DEBUG_FUNCPTR (gst_gl_dummy_window_send_message_async);
|
|
window_class->open = GST_DEBUG_FUNCPTR (gst_gl_dummy_window_open);
|
|
window_class->close = GST_DEBUG_FUNCPTR (gst_gl_dummy_window_close);
|
|
}
|
|
|
|
static void
|
|
gst_gl_dummy_window_init (GstGLDummyWindow * dummy)
|
|
{
|
|
dummy->handle = 0;
|
|
}
|
|
|
|
GstGLDummyWindow *
|
|
gst_gl_dummy_window_new (void)
|
|
{
|
|
return g_object_new (gst_gl_dummy_window_get_type (), NULL);
|
|
}
|