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gl/window: add a dummy window class
Effective for the case where we have a platform that does not require a native window. We require a mainloop to run the GL commands which is currently operated by GstGLWindow.
This commit is contained in:
Matthew Waters
parent
aaa7cfc9fc
commit
b67af0e314
1 changed files with 189 additions and 3 deletions
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@ -86,6 +86,23 @@ struct _GstGLWindowPrivate
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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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@ -163,10 +180,10 @@ gst_gl_window_new (GstGLDisplay * display)
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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",
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user_choice ? user_choice : "(null)");
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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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return 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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@ -536,3 +553,172 @@ gst_gl_window_get_context (GstGLWindow * window)
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return (GstGLContext *) g_weak_ref_get (&window->context_ref);
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}
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GType gst_gl_dummy_window_get_type (void);
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G_DEFINE_TYPE (GstGLDummyWindow, gst_gl_dummy_window, GST_GL_TYPE_WINDOW);
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static gboolean
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gst_gl_dummy_window_open (GstGLWindow * window, GError ** error)
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{
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GstGLDummyWindow *dummy = (GstGLDummyWindow *) window;
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dummy->main_context = g_main_context_new ();
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dummy->loop = g_main_loop_new (dummy->main_context, FALSE);
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return TRUE;
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}
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static void
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gst_gl_dummy_window_close (GstGLWindow * window)
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{
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GstGLDummyWindow *dummy = (GstGLDummyWindow *) window;
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g_main_loop_unref (dummy->loop);
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g_main_context_unref (dummy->main_context);
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}
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static void
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gst_gl_dummy_window_quit (GstGLWindow * window)
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{
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GstGLDummyWindow *dummy = (GstGLDummyWindow *) window;
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g_main_loop_quit (dummy->loop);
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}
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static void
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gst_gl_dummy_window_run (GstGLWindow * window)
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{
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GstGLDummyWindow *dummy = (GstGLDummyWindow *) window;
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g_main_loop_run (dummy->loop);
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}
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typedef struct _GstGLMessage
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{
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GstGLWindowCB callback;
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gpointer data;
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GDestroyNotify destroy;
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} GstGLMessage;
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static gboolean
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_run_message (GstGLMessage * message)
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{
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if (message->callback)
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message->callback (message->data);
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if (message->destroy)
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message->destroy (message->data);
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g_slice_free (GstGLMessage, message);
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return FALSE;
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}
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static void
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gst_gl_dummy_window_send_message_async (GstGLWindow * window,
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GstGLWindowCB callback, gpointer data, GDestroyNotify destroy)
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{
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GstGLDummyWindow *dummy;
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GstGLMessage *message;
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dummy = (GstGLDummyWindow *) window;
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message = g_slice_new (GstGLMessage);
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message->callback = callback;
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message->data = data;
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message->destroy = destroy;
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g_main_context_invoke (dummy->main_context, (GSourceFunc) _run_message,
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message);
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}
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static void
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gst_gl_dummy_window_set_window_handle (GstGLWindow * window, guintptr handle)
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{
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GstGLDummyWindow *dummy = (GstGLDummyWindow *) window;
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dummy->handle = handle;
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}
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static guintptr
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gst_gl_dummy_window_get_window_handle (GstGLWindow * window)
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{
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GstGLDummyWindow *dummy = (GstGLDummyWindow *) window;
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return (guintptr) dummy->handle;
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}
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struct draw
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{
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GstGLDummyWindow *window;
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guint width, height;
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};
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static void
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draw_cb (gpointer data)
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{
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struct draw *draw_data = data;
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GstGLDummyWindow *dummy = draw_data->window;
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GstGLWindow *window = GST_GL_WINDOW (dummy);
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GstGLContext *context = gst_gl_window_get_context (window);
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GstGLContextClass *context_class = GST_GL_CONTEXT_GET_CLASS (context);
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if (window->draw)
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window->draw (window->draw_data);
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context_class->swap_buffers (context);
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gst_object_unref (context);
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}
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static void
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gst_gl_dummy_window_draw (GstGLWindow * window, guint width, guint height)
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{
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struct draw draw_data;
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draw_data.window = (GstGLDummyWindow *) window;
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draw_data.width = width;
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draw_data.height = height;
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gst_gl_window_send_message (window, (GstGLWindowCB) draw_cb, &draw_data);
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}
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static guintptr
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gst_gl_dummy_window_get_display (GstGLWindow * window)
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{
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return 0;
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}
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static void
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gst_gl_dummy_window_class_init (GstGLDummyWindowClass * klass)
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{
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GstGLWindowClass *window_class = (GstGLWindowClass *) klass;
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window_class->get_display =
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GST_DEBUG_FUNCPTR (gst_gl_dummy_window_get_display);
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window_class->get_window_handle =
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GST_DEBUG_FUNCPTR (gst_gl_dummy_window_get_window_handle);
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window_class->set_window_handle =
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GST_DEBUG_FUNCPTR (gst_gl_dummy_window_set_window_handle);
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window_class->draw_unlocked = GST_DEBUG_FUNCPTR (gst_gl_dummy_window_draw);
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window_class->draw = GST_DEBUG_FUNCPTR (gst_gl_dummy_window_draw);
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window_class->run = GST_DEBUG_FUNCPTR (gst_gl_dummy_window_run);
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window_class->quit = GST_DEBUG_FUNCPTR (gst_gl_dummy_window_quit);
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window_class->send_message_async =
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GST_DEBUG_FUNCPTR (gst_gl_dummy_window_send_message_async);
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window_class->open = GST_DEBUG_FUNCPTR (gst_gl_dummy_window_open);
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window_class->close = GST_DEBUG_FUNCPTR (gst_gl_dummy_window_close);
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}
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static void
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gst_gl_dummy_window_init (GstGLDummyWindow * dummy)
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{
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dummy->handle = 0;
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}
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GstGLDummyWindow *
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gst_gl_dummy_window_new (void)
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{
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return g_object_new (gst_gl_dummy_window_get_type (), NULL);
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}
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