gstreamer/gst-libs/gst/gl/cocoa/gstglwindow_cocoa.m

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/*
* GStreamer
* Copyright (C) 2008 Julien Isorce <julien.isorce@gmail.com>
* Copyright (C) 2014 Sebastian Dröge <sebastian@centricular.com>
*
* This library is free software; you can redistribute it and/or
* modify it un der 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
2012-11-08 11:53:56 +00:00
* Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <Cocoa/Cocoa.h>
#include "gstgl_cocoa_private.h"
/* =============================================================*/
/* */
/* GstGLNSWindow declaration */
/* */
/* =============================================================*/
@interface GstGLNSWindow: NSWindow <NSApplicationDelegate> {
BOOL m_isClosed;
GstGLWindowCocoa *window_cocoa;
}
- (id)initWithContentRect:(NSRect)contentRect
styleMask: (unsigned int) styleMask
backing: (NSBackingStoreType) bufferingType
defer: (BOOL) flag screen: (NSScreen *) aScreen
gstWin: (GstGLWindowCocoa *) window;
- (void) setClosed;
- (BOOL) isClosed;
- (BOOL) canBecomeMainWindow;
- (BOOL) canBecomeKeyWindow;
@end
/* =============================================================*/
/* */
/* GstGLWindow */
/* */
/* =============================================================*/
#define GST_GL_WINDOW_COCOA_GET_PRIVATE(o) \
(G_TYPE_INSTANCE_GET_PRIVATE((o), GST_GL_TYPE_WINDOW_COCOA, GstGLWindowCocoaPrivate))
#define GST_CAT_DEFAULT gst_gl_window_cocoa_debug
GST_DEBUG_CATEGORY_STATIC (GST_CAT_DEFAULT);
#define DEBUG_INIT \
GST_DEBUG_CATEGORY_GET (GST_CAT_DEFAULT, "glwindow");
#define gst_gl_window_cocoa_parent_class parent_class
G_DEFINE_TYPE_WITH_CODE (GstGLWindowCocoa, gst_gl_window_cocoa, GST_GL_TYPE_WINDOW, DEBUG_INIT);
static gboolean gst_gl_window_cocoa_open (GstGLWindow *window, GError **err);
static void gst_gl_window_cocoa_close (GstGLWindow *window);
static guintptr gst_gl_window_cocoa_get_window_handle (GstGLWindow * window);
static void gst_gl_window_cocoa_set_window_handle (GstGLWindow * window,
guintptr handle);
static void gst_gl_window_cocoa_draw (GstGLWindow * window, guint width, guint height);
static void gst_gl_window_cocoa_run (GstGLWindow * window);
static void gst_gl_window_cocoa_quit (GstGLWindow * window);
static void gst_gl_window_cocoa_send_message_async (GstGLWindow * window,
GstGLWindowCB callback, gpointer data, GDestroyNotify destroy);
struct _GstGLWindowCocoaPrivate
{
GstGLNSWindow *internal_win_id;
NSView *external_view;
gboolean visible;
GMainContext *main_context;
GMainLoop *loop;
GLint viewport_dim[4];
};
static void
gst_gl_window_cocoa_class_init (GstGLWindowCocoaClass * klass)
{
GstGLWindowClass *window_class;
window_class = (GstGLWindowClass *) klass;
g_type_class_add_private (klass, sizeof (GstGLWindowCocoaPrivate));
window_class->open = GST_DEBUG_FUNCPTR (gst_gl_window_cocoa_open);
window_class->close = GST_DEBUG_FUNCPTR (gst_gl_window_cocoa_close);
window_class->get_window_handle =
GST_DEBUG_FUNCPTR (gst_gl_window_cocoa_get_window_handle);
window_class->set_window_handle =
GST_DEBUG_FUNCPTR (gst_gl_window_cocoa_set_window_handle);
window_class->draw_unlocked = GST_DEBUG_FUNCPTR (gst_gl_window_cocoa_draw);
window_class->draw = GST_DEBUG_FUNCPTR (gst_gl_window_cocoa_draw);
window_class->run = GST_DEBUG_FUNCPTR (gst_gl_window_cocoa_run);
window_class->quit = GST_DEBUG_FUNCPTR (gst_gl_window_cocoa_quit);
window_class->send_message_async =
GST_DEBUG_FUNCPTR (gst_gl_window_cocoa_send_message_async);
}
static void
gst_gl_window_cocoa_init (GstGLWindowCocoa * window)
{
window->priv = GST_GL_WINDOW_COCOA_GET_PRIVATE (window);
}
/* Must be called in the gl thread */
GstGLWindowCocoa *
gst_gl_window_cocoa_new (void)
{
GstGLWindowCocoa *window = g_object_new (GST_GL_TYPE_WINDOW_COCOA, NULL);
return window;
}
/* Must be called from the main thread */
gboolean
gst_gl_window_cocoa_create_window (GstGLWindowCocoa *window_cocoa, NSRect rect)
{
GstGLWindowCocoaPrivate *priv = window_cocoa->priv;
priv->internal_win_id = [[GstGLNSWindow alloc] initWithContentRect:rect styleMask:
(NSTitledWindowMask | NSClosableWindowMask |
NSResizableWindowMask | NSMiniaturizableWindowMask)
backing: NSBackingStoreBuffered defer: NO screen: nil gstWin: window_cocoa];
GST_DEBUG ("NSWindow id: %"G_GUINTPTR_FORMAT, (guintptr) priv->internal_win_id);
[[NSApplication sharedApplication] setDelegate: priv->internal_win_id];
return TRUE;
}
static gboolean
gst_gl_window_cocoa_open (GstGLWindow *window, GError **err)
{
GstGLWindowCocoa *window_cocoa;
window_cocoa = GST_GL_WINDOW_COCOA (window);
window_cocoa->priv->main_context = g_main_context_new ();
window_cocoa->priv->loop =
g_main_loop_new (window_cocoa->priv->main_context, FALSE);
return TRUE;
}
static void
gst_gl_window_cocoa_close (GstGLWindow *window)
{
GstGLWindowCocoa *window_cocoa;
window_cocoa = GST_GL_WINDOW_COCOA (window);
g_main_loop_unref (window_cocoa->priv->loop);
g_main_context_unref (window_cocoa->priv->main_context);
[window_cocoa->priv->internal_win_id release];
window_cocoa->priv->internal_win_id = nil;
}
static guintptr
gst_gl_window_cocoa_get_window_handle (GstGLWindow *window)
{
return (guintptr) GST_GL_WINDOW_COCOA (window)->priv->internal_win_id;
}
static void
gst_gl_window_cocoa_set_window_handle (GstGLWindow * window, guintptr handle)
{
GstGLWindowCocoa *window_cocoa;
GstGLWindowCocoaPrivate *priv;
window_cocoa = GST_GL_WINDOW_COCOA (window);
priv = window_cocoa->priv;
if (priv->internal_win_id) {
if (handle) {
priv->external_view = (NSView *) handle;
priv->visible = TRUE;
} else {
/* bring back our internal window */
priv->external_view = 0;
priv->visible = FALSE;
}
dispatch_async (dispatch_get_main_queue (), ^{
NSView *view = [window_cocoa->priv->internal_win_id contentView];
[window_cocoa->priv->internal_win_id orderOut:window_cocoa->priv->internal_win_id];
[window_cocoa->priv->external_view addSubview: view];
[view setFrame: [window_cocoa->priv->external_view bounds]];
[view setAutoresizingMask: NSViewWidthSizable|NSViewHeightSizable];
});
} else {
/* no internal window yet so delay it to the next drawing */
priv->external_view = (NSView*) handle;
priv->visible = FALSE;
}
}
/* Thread safe */
struct draw
{
GstGLWindowCocoa *window;
guint width, height;
};
static void
draw_cb (gpointer data)
{
struct draw *draw_data = data;
GstGLWindowCocoa *window_cocoa = draw_data->window;
GstGLWindowCocoaPrivate *priv = window_cocoa->priv;
/* useful when set_window_handle is called before
* the internal NSWindow */
if (priv->external_view && !priv->visible) {
gst_gl_window_cocoa_set_window_handle (GST_GL_WINDOW (window_cocoa), (guintptr) priv->external_view);
priv->visible = TRUE;
}
if (!priv->external_view && !priv->visible) {
dispatch_sync (dispatch_get_main_queue (), ^{
NSRect mainRect = [[NSScreen mainScreen] visibleFrame];
NSRect windowRect = [priv->internal_win_id frame];
gint x = 0;
gint y = 0;
GST_DEBUG ("main screen rect: %d %d %d %d\n", (int) mainRect.origin.x,
(int) mainRect.origin.y, (int) mainRect.size.width,
(int) mainRect.size.height);
windowRect.origin.x += x;
windowRect.origin.y += mainRect.size.height > y ? (mainRect.size.height - y) * 0.5 : y;
windowRect.size.width = draw_data->width;
windowRect.size.height = draw_data->height;
GST_DEBUG ("window rect: %d %d %d %d\n", (int) windowRect.origin.x,
(int) windowRect.origin.y, (int) windowRect.size.width,
(int) windowRect.size.height);
x += 20;
y += 20;
#ifndef GNUSTEP
[priv->internal_win_id setFrame:windowRect display:NO];
GST_DEBUG ("make the window available\n");
[priv->internal_win_id makeMainWindow];
#endif
[priv->internal_win_id orderFrontRegardless];
[priv->internal_win_id setViewsNeedDisplay:YES];
});
priv->visible = TRUE;
}
if (g_main_loop_is_running (priv->loop)) {
if (![priv->internal_win_id isClosed]) {
GstGLContext *context = gst_gl_window_get_context (GST_GL_WINDOW (window_cocoa));
NSOpenGLContext * glContext = (NSOpenGLContext *) gst_gl_context_get_gl_context (context);
/* draw opengl scene in the back buffer */
GST_GL_WINDOW (window_cocoa)->draw (GST_GL_WINDOW (window_cocoa)->draw_data);
/* Copy the back buffer to the front buffer */
[glContext flushBuffer];
gst_object_unref (context);
}
}
}
static void
gst_gl_window_cocoa_draw (GstGLWindow * window, guint width, guint height)
{
struct draw draw_data;
draw_data.window = GST_GL_WINDOW_COCOA (window);
draw_data.width = width;
draw_data.height = height;
gst_gl_window_send_message (window, (GstGLWindowCB) draw_cb, &draw_data);
}
static void
gst_gl_window_cocoa_run (GstGLWindow * window)
{
GstGLWindowCocoa *window_cocoa;
window_cocoa = GST_GL_WINDOW_COCOA (window);
GST_LOG ("starting main loop");
g_main_loop_run (window_cocoa->priv->loop);
GST_LOG ("exiting main loop");
}
/* Thread safe */
static void
gst_gl_window_cocoa_quit (GstGLWindow * window)
{
GstGLWindowCocoa *window_cocoa;
window_cocoa = GST_GL_WINDOW_COCOA (window);
g_main_loop_quit (window_cocoa->priv->loop);
}
/* Thread safe */
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_window_cocoa_send_message_async (GstGLWindow * window,
GstGLWindowCB callback, gpointer data, GDestroyNotify destroy)
{
GstGLWindowCocoa *window_cocoa;
GstGLMessage *message;
window_cocoa = GST_GL_WINDOW_COCOA (window);
message = g_slice_new (GstGLMessage);
message->callback = callback;
message->data = data;
message->destroy = destroy;
g_main_context_invoke (window_cocoa->priv->main_context,
(GSourceFunc) _run_message, message);
}
/* =============================================================*/
/* */
/* GstGLNSWindow implementation */
/* */
/* =============================================================*/
/* Must be called from the main thread */
@implementation GstGLNSWindow
- (id) initWithContentRect: (NSRect) contentRect
styleMask: (unsigned int) styleMask
backing: (NSBackingStoreType) bufferingType
defer: (BOOL) flag screen: (NSScreen *) aScreen
gstWin: (GstGLWindowCocoa *) cocoa {
m_isClosed = NO;
window_cocoa = cocoa;
self = [super initWithContentRect: contentRect
styleMask: styleMask backing: bufferingType
defer: flag screen:aScreen];
[self setReleasedWhenClosed:NO];
GST_DEBUG ("initializing GstGLNSWindow\n");
[self setTitle:@"OpenGL renderer"];
[self setBackgroundColor:[NSColor clearColor]];
[self orderOut:window_cocoa->priv->internal_win_id];
if (window_cocoa->priv->external_view) {
NSAutoreleasePool *pool = [[NSAutoreleasePool alloc] init];
NSView *view = [window_cocoa->priv->internal_win_id contentView];
[window_cocoa->priv->external_view addSubview: view];
[view setFrame: [window_cocoa->priv->external_view bounds]];
[view setAutoresizingMask: NSViewWidthSizable|NSViewHeightSizable];
[pool release];
}
return self;
}
- (void) setClosed {
m_isClosed = YES;
}
- (BOOL) isClosed {
return m_isClosed;
}
- (BOOL) canBecomeMainWindow {
return YES;
}
- (BOOL) canBecomeKeyWindow {
return YES;
}
static void
close_window_cb (gpointer data)
{
GstGLWindowCocoa *window_cocoa = data;
GstGLWindow *window;
window = GST_GL_WINDOW (window_cocoa);
if (window->close) {
window->close (window->close_data);
}
}
/* Called in the main thread which is never the gl thread */
- (BOOL) windowShouldClose:(id)sender {
GST_DEBUG ("user clicked the close button\n");
[window_cocoa->priv->internal_win_id setClosed];
gst_gl_window_send_message_async (GST_GL_WINDOW (window_cocoa), (GstGLWindowCB) close_window_cb, gst_object_ref (window_cocoa), (GDestroyNotify) gst_object_unref);
return YES;
}
- (void) applicationDidFinishLaunching: (NSNotification *) not {
}
- (void) applicationWillFinishLaunching: (NSNotification *) not {
}
- (BOOL) applicationShouldTerminateAfterLastWindowClosed:(NSApplication *)app {
/* the application is manually stopped by calling stopApp on the AppThreadPerformer */
return NO;
}
- (void) applicationWillTerminate:(NSNotification *)aNotification {
#ifdef GNUSTEP
/* fixes segfault with gst-launch-1.0 -e ... and sending SIGINT (Ctrl-C)
* which causes GNUstep to run a signal handler in the main thread.
* However that thread has never been 'registered' with GNUstep so
* the autorelease magic of objective-c causes a segfault from accessing
* a null NSThread object somewhere deep in GNUstep.
*
* I put it here because this is the first time we can register the thread.
*/
GSRegisterCurrentThread();
#endif
}
@end
/* =============================================================*/
/* */
/* GstGLNSView implementation */
/* */
/* =============================================================*/
@implementation GstGLNSView
/* Must be called from the application main thread */
- (id)initWithFrame:(GstGLWindowCocoa *)window rect:(NSRect)contentRect {
self = [super initWithFrame: contentRect];
window_cocoa = window;
#ifndef GNUSTEP
[self setWantsLayer:NO];
#endif
/* Get notified about changes */
[self setPostsFrameChangedNotifications:YES];
[[NSNotificationCenter defaultCenter] addObserver: self selector:@selector(reshape:) name: NSViewFrameDidChangeNotification object: self];
[self setWantsBestResolutionOpenGLSurface:YES];
return self;
}
- (void) dealloc {
[[NSNotificationCenter defaultCenter] removeObserver: self];
[super dealloc];
}
struct resize
{
GstGLWindowCocoa * window;
NSRect bounds, visibleRect;
};
static void
resize_cb (gpointer data)
{
struct resize *resize_data = data;
GstGLWindowCocoa *window_cocoa = resize_data->window;
GstGLWindow *window = GST_GL_WINDOW (window_cocoa);
GstGLContext *context = gst_gl_window_get_context (window);
NSOpenGLContext * glContext = (NSOpenGLContext *) gst_gl_context_get_gl_context (context);
if (g_main_loop_is_running (window_cocoa->priv->loop) && ![window_cocoa->priv->internal_win_id isClosed]) {
const GstGLFuncs *gl;
[glContext update];
gl = context->gl_vtable;
if (window->resize) {
window->resize (window->resize_data, resize_data->bounds.size.width, resize_data->bounds.size.height);
gl->GetIntegerv (GL_VIEWPORT, window_cocoa->priv->viewport_dim);
}
gl->Viewport (window_cocoa->priv->viewport_dim[0] - resize_data->visibleRect.origin.x,
window_cocoa->priv->viewport_dim[1] - resize_data->visibleRect.origin.y,
window_cocoa->priv->viewport_dim[2], window_cocoa->priv->viewport_dim[3]);
GST_GL_WINDOW (window_cocoa)->draw (GST_GL_WINDOW (window_cocoa)->draw_data);
[glContext flushBuffer];
}
gst_object_unref (context);
}
- (void)renewGState {
/* Don't update the screen until we redraw, this
* prevents flickering during scrolling, clipping,
* resizing, etc
*/
[[self window] disableScreenUpdatesUntilFlush];
[super renewGState];
}
- (void)reshape: (NSNotification*)notification {
GstGLWindow *window;
window = GST_GL_WINDOW (window_cocoa);
if (window->resize) {
NSRect bounds = [self bounds];
NSRect visibleRect = [self visibleRect];
struct resize *resize_data = g_new (struct resize, 1);
bounds = [self convertRectToBacking:bounds];
visibleRect = [self convertRectToBacking:visibleRect];
GST_DEBUG_OBJECT (window, "Window resized: bounds %lf %lf %lf %lf "
"visibleRect %lf %lf %lf %lf",
bounds.origin.x, bounds.origin.y,
bounds.size.width, bounds.size.height,
visibleRect.origin.x, visibleRect.origin.y,
visibleRect.size.width, visibleRect.size.height);
resize_data->window = window_cocoa;
resize_data->bounds = bounds;
resize_data->visibleRect = visibleRect;
gst_gl_window_send_message_async (GST_GL_WINDOW (window_cocoa), (GstGLWindowCB) resize_cb, resize_data, (GDestroyNotify) g_free);
}
}
- (void)drawRect: (NSRect)dirtyRect {
[self reshape:nil];
}
- (BOOL) isOpaque {
return YES;
}
- (BOOL) isFlipped {
return NO;
}
@end