gstreamer/gst-libs/gst/gl/gstglwindow_cocoa.m
2017-12-09 19:31:21 +00:00

586 lines
16 KiB
Objective-C

/*
* GStreamer
* Copyright (C) 2008 Julien Isorce <julien.isorce@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., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "gstglwindow.h"
#import <Cocoa/Cocoa.h>
/* ============================================================= */
/* */
/* GstGLNSWindow declaration */
/* */
/* ============================================================= */
@interface GstGLNSWindow: NSWindow {
BOOL m_isClosed;
GstGLWindowPrivate *m_priv;
}
- (id)initWithContentRect:(NSRect)contentRect
styleMask: (unsigned int) styleMask
backing: (NSBackingStoreType) bufferingType
defer: (BOOL) flag screen: (NSScreen *) aScreen
gstWin: (GstGLWindowPrivate *) priv;
@end
/* ============================================================= */
/* */
/* AppThreadPerformer declaration */
/* */
/* ============================================================= */
/* Perform actions in the Application thread */
@interface AppThreadPerformer : NSObject {
GstGLWindowPrivate *m_priv;
GstGLWindowCB m_callback;
gpointer m_data;
}
- (id) initWithPrivate : (GstGLWindowPrivate *) priv;
- (id) initWithCallback : (GstGLWindowCB) callback userData: (gpointer) data;
- (id) initWithAll: (GstGLWindowCB) callback userData: (gpointer) data private: (GstGLWindowPrivate *) priv;
- (void) updateWindow;
- (void) sendToApp;
- (void) setWindow: (NSWindow *) window;
- (void) stopApp;
@end
/* ============================================================= */
/* */
/* GstGLWindow */
/* */
/* ============================================================= */
#ifndef GNUSTEP
static BOOL GSRegisterCurrentThread(void) { return TRUE; };
static void GSUnregisterCurrentThread(void) {};
#endif
#define GST_GL_WINDOW_GET_PRIVATE(o) \
(G_TYPE_INSTANCE_GET_PRIVATE((o), GST_GL_TYPE_WINDOW, GstGLWindowPrivate))
enum
{
PROP_0
};
struct _GstGLWindowPrivate
{
GstGLNSWindow *internal_win_id;
GstGLWindowCB draw_cb;
gpointer draw_data;
GstGLWindowCB2 resize_cb;
gpointer resize_data;
GstGLWindowCB close_cb;
gpointer close_data;
gboolean visible;
NSWindow *parent;
};
G_DEFINE_TYPE (GstGLWindow, gst_gl_window, G_TYPE_OBJECT);
#undef G_LOG_DOMAIN
#define G_LOG_DOMAIN "GstGLWindow"
gboolean _gst_gl_window_debug = FALSE;
/* Must be called in the gl thread */
static void
gst_gl_window_finalize (GObject * object)
{
G_OBJECT_CLASS (gst_gl_window_parent_class)->finalize (object);
}
static void
gst_gl_window_log_handler (const gchar * domain, GLogLevelFlags flags,
const gchar * message, gpointer user_data)
{
if (_gst_gl_window_debug) {
g_log_default_handler (domain, flags, message, user_data);
}
}
static void
gst_gl_window_class_init (GstGLWindowClass * klass)
{
GObjectClass *obj_class = G_OBJECT_CLASS (klass);
g_type_class_add_private (klass, sizeof (GstGLWindowPrivate));
obj_class->finalize = gst_gl_window_finalize;
}
static void
gst_gl_window_init (GstGLWindow * window)
{
window->priv = GST_GL_WINDOW_GET_PRIVATE (window);
if (g_getenv ("GST_GL_WINDOW_DEBUG") != NULL)
_gst_gl_window_debug = TRUE;
g_log_set_handler ("GstGLWindow", G_LOG_LEVEL_DEBUG,
gst_gl_window_log_handler, NULL);
}
/* Must be called in the gl thread */
GstGLWindow *
gst_gl_window_new (gint width, gint height, gulong external_gl_context)
{
GstGLWindow *window = g_object_new (GST_GL_TYPE_WINDOW, NULL);
GstGLWindowPrivate *priv = window->priv;
NSAutoreleasePool *pool = nil;
NSRect rect;
static gint x = 0;
static gint y = 0;
x += 20;
y += 20;
priv->internal_win_id = nil;
priv->draw_cb = NULL;
priv->draw_data = NULL;
priv->resize_cb = NULL;
priv->resize_data = NULL;
priv->close_cb = NULL;
priv->close_data = NULL;
priv->visible = FALSE;
priv->parent = nil;
GSRegisterCurrentThread();
pool = [[NSAutoreleasePool alloc] init];
[NSApplication sharedApplication];
rect.origin.x = 0;
rect.origin.y = 0;
rect.size.width = width;
rect.size.height = height;
priv->internal_win_id =[[GstGLNSWindow alloc] initWithContentRect:rect
styleMask: (NSTitledWindowMask | NSClosableWindowMask | NSResizableWindowMask | NSMiniaturizableWindowMask)
backing: NSBackingStoreBuffered defer: NO screen: nil gstWin: priv];
if (priv->internal_win_id) {
NSRect windowRect;
NSRect mainRect = [[NSScreen mainScreen] visibleFrame];
GST_DEBUG ("main screen rect: %d %d %d %d", (int) mainRect.origin.x, (int) mainRect.origin.y,
(int) mainRect.size.width, (int) mainRect.size.height);
windowRect = [priv->internal_win_id frame];
GST_DEBUG ("window rect: %d %d %d %d", (int) windowRect.origin.x, (int) windowRect.origin.y,
(int) windowRect.size.width, (int) windowRect.size.height);
windowRect.origin.x += x;
windowRect.origin.y += mainRect.size.height > y ? (mainRect.size.height - y) * 0.5 : y;
[priv->internal_win_id setFrame:windowRect display:NO];
}
[pool release];
return window;
}
GQuark
gst_gl_window_error_quark (void)
{
return g_quark_from_static_string ("gst-gl-window-error");
}
void
gst_gl_window_set_external_window_id (GstGLWindow * window, gulong id)
{
GstGLWindowPrivate *priv = window->priv;
if (GSRegisterCurrentThread()) {
NSAutoreleasePool *pool = [[NSAutoreleasePool alloc] init];
AppThreadPerformer* app_thread_performer = [[AppThreadPerformer alloc] initWithPrivate:priv];
[app_thread_performer performSelectorOnMainThread:@selector(setWindow) withObject:(NSWindow *)(gulong)id waitUntilDone:YES];
[pool release];
GSUnregisterCurrentThread();
}
else
g_debug ("failed to register current thread, cannot set external window id");
}
/* Must be called in the gl thread */
void
gst_gl_window_set_draw_callback (GstGLWindow * window, GstGLWindowCB callback,
gpointer data)
{
GstGLWindowPrivate *priv = window->priv;
priv->draw_cb = callback;
priv->draw_data = data;
}
/* Must be called in the gl thread */
void
gst_gl_window_set_resize_callback (GstGLWindow * window,
GstGLWindowCB2 callback, gpointer data)
{
GstGLWindowPrivate *priv = window->priv;
priv->resize_cb = callback;
priv->resize_data = data;
}
/* Must be called in the gl thread */
void
gst_gl_window_set_close_callback (GstGLWindow * window, GstGLWindowCB callback,
gpointer data)
{
GstGLWindowPrivate *priv = window->priv;
priv->close_cb = callback;
priv->close_data = data;
}
void
gst_gl_window_draw_unlocked (GstGLWindow * window)
{
gst_gl_window_draw (window);
}
/* Thread safe */
void
gst_gl_window_draw (GstGLWindow * window)
{
GstGLWindowPrivate *priv = window->priv;
if (GSRegisterCurrentThread()) {
NSAutoreleasePool *pool = [[NSAutoreleasePool alloc] init];
AppThreadPerformer* app_thread_performer = [[AppThreadPerformer alloc] initWithPrivate:priv];
[app_thread_performer performSelectorOnMainThread:@selector(updateWindow) withObject:nil waitUntilDone:YES];
[pool release];
GSUnregisterCurrentThread();
}
else
g_debug ("failed to register current thread, cannot draw");
}
void
gst_gl_window_run_loop (GstGLWindow * window)
{
GstGLWindowPrivate *priv = window->priv;
NSAutoreleasePool *pool = [[NSAutoreleasePool alloc] init];
g_debug ("begin loop\n");
if (priv->internal_win_id != nil) {
[NSApp setDelegate:priv->internal_win_id];
[NSApp run];
[priv->internal_win_id release];
}
[pool release];
g_debug ("end loop\n");
}
/* Thread safe */
void
gst_gl_window_quit_loop (GstGLWindow * window, GstGLWindowCB callback,
gpointer data)
{
if (window) {
if (GSRegisterCurrentThread()) {
NSAutoreleasePool *pool = [[NSAutoreleasePool alloc] init];
AppThreadPerformer* app_thread_performer = [[AppThreadPerformer alloc] initWithCallback:callback userData:data];
[app_thread_performer performSelectorOnMainThread:@selector(stopApp) withObject:nil waitUntilDone:YES];
[pool release];
GSUnregisterCurrentThread();
}
else
g_debug ("failed to register current thread, application thread is lost");
}
}
/* Thread safe */
void
gst_gl_window_send_message (GstGLWindow * window, GstGLWindowCB callback,
gpointer data)
{
if (window) {
GstGLWindowPrivate *priv = window->priv;
if (GSRegisterCurrentThread()) {
NSAutoreleasePool *pool = [[NSAutoreleasePool alloc] init];
AppThreadPerformer* app_thread_performer = [[AppThreadPerformer alloc] initWithAll:callback userData:data private:priv];
[app_thread_performer performSelectorOnMainThread:@selector(sendToApp) withObject:nil waitUntilDone:YES];
[pool release];
GSUnregisterCurrentThread();
}
else
g_debug ("failed to register current thread, cannot send message");
}
}
/* ============================================================= */
/* */
/* GstGLNSWindow implementation */
/* */
/* ============================================================= */
@implementation GstGLNSWindow
- (id) initWithContentRect: (NSRect) contentRect
styleMask: (unsigned int) styleMask
backing: (NSBackingStoreType) bufferingType
defer: (BOOL) flag screen: (NSScreen *) aScreen
gstWin: (GstGLWindowPrivate *) priv {
NSOpenGLView *glView = nil;
NSOpenGLPixelFormat *fmt = nil;
NSOpenGLContext *glContext = nil;
NSOpenGLPixelFormatAttribute attribs[] = {
NSOpenGLPFAAccelerated,
NSOpenGLPFANoRecovery,
NSOpenGLPFADoubleBuffer,
NSOpenGLPFAColorSize, 24,
NSOpenGLPFAAlphaSize, 8,
NSOpenGLPFADepthSize, 24,
NSOpenGLPFAWindow,
0
};
m_isClosed = NO;
m_priv = priv;
self = [super initWithContentRect: contentRect
styleMask: styleMask backing: bufferingType
defer: flag screen:aScreen];
[self setReleasedWhenClosed:NO];
g_debug ("initializing GstGLNSWindow");
glView = [NSOpenGLView alloc];
[self setContentView:glView];
fmt = [[NSOpenGLPixelFormat alloc] initWithAttributes:attribs];
if (!fmt) {
g_warning ("cannot create NSOpenGLPixelFormat");
return nil;
}
glView = [glView initWithFrame:contentRect pixelFormat:fmt];
glContext = [glView openGLContext];
/* OpenGL context is made current only one time threre.
* Indeed, all OpenGL calls are made in only one thread,
* the Application thread */
[glContext makeCurrentContext];
[glContext update];
/* Back and front buffers are swapped only during the vertical retrace of the monitor.
* Discarded if you configured your driver to Never-use-V-Sync.
*/
NS_DURING {
#if 0
/* FIXME doesn't compile */
if (glContext) {
long swapInterval = 1;
[[glView openGLContext] setValues:&swapInterval forParameter:NSOpenGLCPSwapInterval];
}
#endif
} NS_HANDLER {
g_debug ("your back-end does not implement NSOpenglContext::setValues");
}
NS_ENDHANDLER
g_debug ("opengl GstGLNSWindow initialized: %d x %d",
(int) contentRect.size.width, (int) contentRect.size.height);
[self setTitle:@"OpenGL renderer"];
return self;
}
- (BOOL) isClosed {
return m_isClosed;
}
- (BOOL) windowShouldClose:(id)sender {
g_debug ("user clicked the close button");
m_isClosed = YES;
if (m_priv->close_cb)
m_priv->close_cb (m_priv->close_data);
m_priv->draw_cb = NULL;
m_priv->draw_data = NULL;
m_priv->resize_cb = NULL;
m_priv->resize_data = NULL;
m_priv->close_cb = NULL;
m_priv->close_data = NULL;
return YES;
}
- (void) windowDidResize: (NSNotification *) not {
NSLog(@"windowDidResize"); //FIXME: seems to be not reached on win32
if (m_priv->resize_cb) {
NSWindow *window = [not object];
NSRect rect = [window frame];
m_priv->resize_cb (m_priv->resize_data, rect.size.width, rect.size.height);
}
}
- (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 {
}
@end
/* ============================================================= */
/* */
/* AppThreadPerformer implementation */
/* */
/* ============================================================= */
@implementation AppThreadPerformer
- (id) initWithPrivate: (GstGLWindowPrivate *) priv {
m_priv = priv;
m_callback = NULL;
m_data = NULL;
return self;
}
- (id) initWithCallback: (GstGLWindowCB) callback userData: (gpointer) data {
m_priv = NULL;
m_callback = callback;
m_data = data;
return self;
}
- (id) initWithAll: (GstGLWindowCB) callback userData: (gpointer) data private: (GstGLWindowPrivate *) priv {
m_priv = priv;
m_callback = callback;
m_data = data;
return self;
}
- (void) updateWindow {
if ([NSApp isRunning]) {
if (![m_priv->internal_win_id isClosed]) {
NSAutoreleasePool *pool = [[NSAutoreleasePool alloc] init];
if (!m_priv->visible) {
g_debug ("make the window available");
[m_priv->internal_win_id makeMainWindow];
//[m_priv->internal_win_id center];
[m_priv->internal_win_id orderFront:m_priv->internal_win_id];
m_priv->visible = TRUE;
}
if (m_priv->parent) {
NSRect parent_rect = [[m_priv->internal_win_id parentWindow] frame];
NSRect rect = [m_priv->internal_win_id frame];
if (rect.origin.x != parent_rect.origin.x || rect.origin.y != parent_rect.origin.y ||
rect.size.width != parent_rect.size.width || rect.size.height != parent_rect.size.height) {
[m_priv->internal_win_id setFrame:parent_rect display:YES];
g_debug ("parent resize: %d, %d, %d, %d\n",
(int) parent_rect.origin.x, (int) parent_rect.origin.y,
(int) parent_rect.size.width, (int) parent_rect.size.height);
}
}
if ([[m_priv->internal_win_id contentView] lockFocusIfCanDraw]) {
/* draw opengl scene in the back buffer */
m_priv->draw_cb (m_priv->draw_data);
/* Copy the back buffer to the front buffer */
[[[m_priv->internal_win_id contentView] openGLContext] flushBuffer];
[[m_priv->internal_win_id contentView] unlockFocus];
}
[pool release];
}
}
}
- (void) sendToApp {
if ([NSApp isRunning]) {
if (![m_priv->internal_win_id isClosed]) {
m_callback (m_data);
}
}
}
- (void) setWindow: (NSWindow *) window {
if ([NSApp isRunning]) {
NSAutoreleasePool *pool = [[NSAutoreleasePool alloc] init];
[m_priv->internal_win_id setParentWindow:window];
m_priv->parent = window;
[m_priv->internal_win_id setFrame:[window frame] display:YES];
[pool release];
}
}
- (void) stopApp {
NSAutoreleasePool *pool = [[NSAutoreleasePool alloc] init];
if ([NSApp isRunning])
[NSApp stop:self];
[pool release];
}
@end