gstreamer/gst-libs/gst/vulkan/cocoa/gstvkwindow_cocoa.m

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/*
* GStreamer
* Copyright (C) 2019 Matthew Waters <matthew@centricular.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.
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <Cocoa/Cocoa.h>
#include <QuartzCore/QuartzCore.h>
#include <gst/gst.h>
#include <gst/vulkan/vulkan.h>
#include "gstvkwindow_cocoa.h"
#include "gstvkdisplay_cocoa.h"
#include "gstvkcocoa_utils.h"
#define GET_PRIV(o) gst_vulkan_window_cocoa_get_instance_private (o)
#define GST_CAT_DEFAULT gst_vulkan_window_cocoa_debug
GST_DEBUG_CATEGORY_STATIC (GST_CAT_DEFAULT);
static void
_init_debug (void)
{
static volatile gsize _init = 0;
if (g_once_init_enter (&_init)) {
GST_DEBUG_CATEGORY_INIT (GST_CAT_DEFAULT, "vulkanwindowmacos", 0,
"Vulkan MacOS Window");
g_once_init_leave (&_init, 1);
}
}
gboolean gst_vulkan_window_cocoa_handle_event (GstVulkanWindowCocoa * window_cocoa);
enum
{
PROP_0,
};
struct _GstVulkanWindowCocoaPrivate
{
gpointer internal_win_id;
gpointer internal_view;
gint preferred_width;
gint preferred_height;
gboolean visible;
};
#define gst_vulkan_window_cocoa_parent_class parent_class
G_DEFINE_TYPE_WITH_CODE (GstVulkanWindowCocoa, gst_vulkan_window_cocoa,
GST_TYPE_VULKAN_WINDOW, G_ADD_PRIVATE (GstVulkanWindowCocoa) _init_debug ());
static VkSurfaceKHR gst_vulkan_window_cocoa_get_surface (GstVulkanWindow * window,
GError ** error);
static gboolean gst_vulkan_window_cocoa_get_presentation_support (GstVulkanWindow
* window, GstVulkanDevice * device, guint32 queue_family_idx);
static gboolean gst_vulkan_window_cocoa_open (GstVulkanWindow * window,
GError ** error);
static void gst_vulkan_window_cocoa_close (GstVulkanWindow * window);
static void
gst_vulkan_window_cocoa_finalize (GObject * object)
{
G_OBJECT_CLASS (parent_class)->finalize (object);
}
static void
gst_vulkan_window_cocoa_class_init (GstVulkanWindowCocoaClass * klass)
{
GObjectClass *obj_class = G_OBJECT_CLASS (klass);
GstVulkanWindowClass *window_class = (GstVulkanWindowClass *) klass;
obj_class->finalize = gst_vulkan_window_cocoa_finalize;
window_class->open = GST_DEBUG_FUNCPTR (gst_vulkan_window_cocoa_open);
window_class->close = GST_DEBUG_FUNCPTR (gst_vulkan_window_cocoa_close);
window_class->get_surface = gst_vulkan_window_cocoa_get_surface;
window_class->get_presentation_support =
gst_vulkan_window_cocoa_get_presentation_support;
}
static void
gst_vulkan_window_cocoa_init (GstVulkanWindowCocoa * window)
{
GstVulkanWindowCocoaPrivate *priv = GET_PRIV (window);
priv->preferred_width = 320;
priv->preferred_height = 240;
}
/* Must be called in the gl thread */
GstVulkanWindowCocoa *
gst_vulkan_window_cocoa_new (GstVulkanDisplay * display)
{
GstVulkanWindowCocoa *window;
_init_debug ();
if ((gst_vulkan_display_get_handle_type (display) &
GST_VULKAN_DISPLAY_TYPE_COCOA)
== GST_VULKAN_DISPLAY_TYPE_NONE) {
GST_INFO ("Wrong display type %u for this window type %u", display->type,
GST_VULKAN_DISPLAY_TYPE_COCOA);
return NULL;
}
window = g_object_new (GST_TYPE_VULKAN_WINDOW_COCOA, NULL);
gst_object_ref_sink (window);
return window;
}
static void
_show_window (gpointer data)
{
GstVulkanWindowCocoa *window_cocoa = GST_VULKAN_WINDOW_COCOA (data);
GstVulkanWindowCocoaPrivate *priv = GET_PRIV (window_cocoa);
GstVulkanNSWindow *internal_win_id = (__bridge GstVulkanNSWindow *)priv->internal_win_id;
GST_DEBUG_OBJECT (window_cocoa, "showing");
[internal_win_id makeMainWindow];
[internal_win_id orderFrontRegardless];
[internal_win_id setViewsNeedDisplay:YES];
priv->visible = TRUE;
}
static void
gst_vulkan_window_cocoa_show (GstVulkanWindow * window)
{
GstVulkanWindowCocoa *window_cocoa = GST_VULKAN_WINDOW_COCOA (window);
GstVulkanWindowCocoaPrivate *priv = GET_PRIV (window_cocoa);
if (!priv->visible)
_invoke_on_main ((GstVulkanWindowFunc) _show_window, gst_object_ref (window),
(GDestroyNotify) gst_object_unref);
}
static void
gst_vulkan_window_cocoa_hide (GstVulkanWindow * window)
{
// GstVulkanWindowCocoa *window_cocoa = GST_VULKAN_WINDOW_COCOA (window);
/* FIXME: implement */
}
static void
_create_window (GstVulkanWindowCocoa * window_cocoa)
{
GstVulkanWindowCocoaPrivate *priv = GET_PRIV (window_cocoa);
NSRect mainRect = [[NSScreen mainScreen] visibleFrame];
gint h = priv->preferred_height;
gint y = mainRect.size.height > h ? (mainRect.size.height - h) * 0.5 : 0;
NSRect rect = NSMakeRect (0, y, priv->preferred_width, priv->preferred_height);
GstVulkanNSWindow *internal_win_id;
GstVulkanNSView *view;
view = [[GstVulkanNSView alloc] initWithFrame:rect];
view.wantsLayer = YES;
internal_win_id = [[GstVulkanNSWindow alloc] initWithContentRect:rect styleMask:
(NSWindowStyleMaskTitled | NSWindowStyleMaskClosable |
NSWindowStyleMaskResizable | NSWindowStyleMaskMiniaturizable)
backing: NSBackingStoreBuffered defer: NO screen: nil gstWin: window_cocoa];
[internal_win_id setContentView:view];
priv->internal_win_id = (__bridge_retained gpointer)internal_win_id;
priv->internal_view = (__bridge_retained gpointer)view;
gst_vulkan_window_cocoa_show (GST_VULKAN_WINDOW (window_cocoa));
}
gboolean
gst_vulkan_window_cocoa_create_window (GstVulkanWindowCocoa * window_cocoa)
{
_invoke_on_main ((GstVulkanWindowFunc) _create_window,
gst_object_ref (window_cocoa), gst_object_unref);
g_usleep(1000000);
return TRUE;
}
static VkSurfaceKHR
gst_vulkan_window_cocoa_get_surface (GstVulkanWindow * window, GError ** error)
{
GstVulkanWindowCocoa *window_cocoa = GST_VULKAN_WINDOW_COCOA (window);
GstVulkanWindowCocoaPrivate *priv = GET_PRIV (window_cocoa);
VkMacOSSurfaceCreateInfoMVK info = { 0, };
VkSurfaceKHR ret;
VkResult err;
info.sType = VK_STRUCTURE_TYPE_MACOS_SURFACE_CREATE_INFO_MVK;
info.pNext = NULL;
info.flags = 0;
info.pView = priv->internal_view;
if (!window_cocoa->CreateMacOSSurface)
window_cocoa->CreateMacOSSurface =
gst_vulkan_instance_get_proc_address (window->display->instance,
"vkCreateMacOSSurfaceMVK");
if (!window_cocoa->CreateMacOSSurface) {
g_set_error_literal (error, GST_VULKAN_ERROR, VK_ERROR_FEATURE_NOT_PRESENT,
"Could not retrieve \"vkCreateMacOSSurfaceMVK\" function pointer");
return NULL;
}
err =
window_cocoa->CreateMacOSSurface (window->display->instance->instance, &info,
NULL, &ret);
if (gst_vulkan_error_to_g_error (err, error, "vkCreateMacOSSurfaceMVK") < 0)
return NULL;
return ret;
}
static gboolean
gst_vulkan_window_cocoa_get_presentation_support (GstVulkanWindow * window,
GstVulkanDevice * device, guint32 queue_family_idx)
{
return TRUE;
}
static gboolean
gst_vulkan_window_cocoa_open (GstVulkanWindow * window, GError ** error)
{
GstVulkanWindowCocoa *window_cocoa = GST_VULKAN_WINDOW_COCOA (window);
if (!GST_VULKAN_WINDOW_CLASS (parent_class)->open (window, error))
return FALSE;
return gst_vulkan_window_cocoa_create_window (window_cocoa);
}
static void
_close_window (gpointer * data)
{
GstVulkanWindowCocoa *window_cocoa = GST_VULKAN_WINDOW_COCOA (data);
GstVulkanWindow *window = GST_VULKAN_WINDOW (window_cocoa);
GstVulkanWindowCocoaPrivate *priv = GET_PRIV (window_cocoa);
GstVulkanNSWindow *internal_win_id =
(__bridge GstVulkanNSWindow *) priv->internal_win_id;
gst_vulkan_window_cocoa_hide (window);
[[internal_win_id contentView] removeFromSuperview];
CFBridgingRelease (priv->internal_win_id);
priv->internal_win_id = NULL;
CFBridgingRelease (priv->internal_view);
priv->internal_view = NULL;
}
static void
gst_vulkan_window_cocoa_close (GstVulkanWindow * window)
{
_invoke_on_main ((GstVulkanWindowFunc) _close_window, gst_object_ref (window),
(GDestroyNotify) gst_object_unref);
GST_VULKAN_WINDOW_CLASS (parent_class)->close (window);
}
@implementation GstVulkanNSWindow
- (id) initWithContentRect: (NSRect) contentRect
styleMask: (unsigned int) styleMask
backing: (NSBackingStoreType) bufferingType
defer: (BOOL) flag screen: (NSScreen *) aScreen
gstWin: (GstVulkanWindowCocoa *) cocoa {
m_isClosed = NO;
window_cocoa = cocoa;
self = [super initWithContentRect: contentRect
styleMask: styleMask backing: bufferingType
defer: flag screen:aScreen];
GST_DEBUG ("initializing GstVulkanNSWindow");
[self setReleasedWhenClosed:NO];
[self setTitle:@"Vulkan renderer"];
[self setBackgroundColor:[NSColor blackColor]];
[self orderOut:self];
return self;
}
- (void) setClosed {
m_isClosed = YES;
}
- (BOOL) isClosed {
return m_isClosed;
}
- (BOOL) canBecomeMainWindow {
return YES;
}
- (BOOL) canBecomeKeyWindow {
return YES;
}
- (BOOL) windowShouldClose:(id)sender {
GstVulkanWindowCocoaPrivate *priv = GET_PRIV (window_cocoa);
GstVulkanNSWindow *internal_win_id = (__bridge GstVulkanNSWindow *)priv->internal_win_id;
GST_DEBUG ("user clicked the close button");
[internal_win_id setClosed];
return YES;
}
@end
@implementation GstVulkanNSView
-(BOOL) wantsUpdateLayer
{
return YES;
}
+(Class) layerClass
{
return [CAMetalLayer class];
}
-(CALayer*) makeBackingLayer
{
CALayer* layer = [self.class.layerClass layer];
CGSize viewScale = [self convertSizeToBacking: CGSizeMake(1.0, 1.0)];
layer.contentsScale = MIN(viewScale.width, viewScale.height);
return layer;
}
@end
void
_invoke_on_main (GstVulkanWindowFunc func, gpointer data, GDestroyNotify notify)
{
if ([NSThread isMainThread]) {
func (data);
if (notify)
notify (data);
} else {
dispatch_async (dispatch_get_main_queue (), ^{
func (data);
if (notify)
notify (data);
});
}
}