mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
synced 2024-11-25 19:21:06 +00:00
9ff86a3c54
This is only for non-Cocoa apps but previously caused a 2 second waiting during startup for Cocoa apps. This is unacceptable. Instead we now check a bit more extensive if something actually runs on the GLib default main context, and if not don't even bother waiting for something to happen from there.
365 lines
10 KiB
Objective-C
365 lines
10 KiB
Objective-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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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#include <Cocoa/Cocoa.h>
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#include "gstglcontext_cocoa.h"
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#include "gstgl_cocoa_private.h"
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static gboolean gst_gl_context_cocoa_create_context (GstGLContext *context, GstGLAPI gl_api,
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GstGLContext * other_context, GError **error);
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static void gst_gl_context_cocoa_destroy_context (GstGLContext *context);
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static guintptr gst_gl_context_cocoa_get_gl_context (GstGLContext * window);
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static gboolean gst_gl_context_cocoa_activate (GstGLContext * context, gboolean activate);
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static GstGLAPI gst_gl_context_cocoa_get_gl_api (GstGLContext * context);
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static GstGLPlatform gst_gl_context_cocoa_get_gl_platform (GstGLContext * context);
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#define GST_GL_CONTEXT_COCOA_GET_PRIVATE(o) \
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(G_TYPE_INSTANCE_GET_PRIVATE((o), GST_GL_TYPE_CONTEXT_COCOA, GstGLContextCocoaPrivate))
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G_DEFINE_TYPE (GstGLContextCocoa, gst_gl_context_cocoa, GST_GL_TYPE_CONTEXT);
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#ifndef GNUSTEP
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static GMutex nsapp_lock;
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static GCond nsapp_cond;
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static gboolean
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gst_gl_window_cocoa_init_nsapp (gpointer data)
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{
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NSAutoreleasePool *pool = nil;
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g_mutex_lock (&nsapp_lock);
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pool = [[NSAutoreleasePool alloc] init];
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/* The sharedApplication class method initializes
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* the display environment and connects your program
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* to the window server and the display server
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*/
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/* TODO: so consider to create GstGLDisplayCocoa
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* in gst/gl/cocoa/gstgldisplay_cocoa.h/c
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*/
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/* has to be called in the main thread */
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[NSApplication sharedApplication];
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GST_DEBUG ("NSApp initialized from a GTimeoutSource");
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[pool release];
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g_cond_signal (&nsapp_cond);
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g_mutex_unlock (&nsapp_lock);
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return FALSE;
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}
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static gboolean
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gst_gl_window_cocoa_nsapp_iteration (gpointer data)
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{
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NSAutoreleasePool *pool = [[NSAutoreleasePool alloc] init];
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NSEvent *event = nil;
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if ([NSThread isMainThread]) {
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while ((event = ([NSApp nextEventMatchingMask:NSAnyEventMask
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untilDate:[NSDate dateWithTimeIntervalSinceNow:0.05]
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inMode:NSDefaultRunLoopMode dequeue:YES])) != nil) {
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[NSApp sendEvent:event];
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}
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}
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[pool release];
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return TRUE;
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}
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#endif
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static void
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gst_gl_context_cocoa_class_init (GstGLContextCocoaClass * klass)
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{
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GstGLContextClass *context_class = (GstGLContextClass *) klass;
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#ifndef GNUSTEP
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NSAutoreleasePool* pool = nil;
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#endif
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g_type_class_add_private (klass, sizeof (GstGLContextCocoaPrivate));
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context_class->destroy_context =
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GST_DEBUG_FUNCPTR (gst_gl_context_cocoa_destroy_context);
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context_class->create_context =
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GST_DEBUG_FUNCPTR (gst_gl_context_cocoa_create_context);
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context_class->get_gl_context =
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GST_DEBUG_FUNCPTR (gst_gl_context_cocoa_get_gl_context);
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context_class->activate = GST_DEBUG_FUNCPTR (gst_gl_context_cocoa_activate);
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context_class->get_gl_api =
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GST_DEBUG_FUNCPTR (gst_gl_context_cocoa_get_gl_api);
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context_class->get_gl_platform =
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GST_DEBUG_FUNCPTR (gst_gl_context_cocoa_get_gl_platform);
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#ifndef GNUSTEP
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pool = [[NSAutoreleasePool alloc] init];
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/* [NSApplication sharedApplication] will usually be
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* called in your application so it's not necessary
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* to do that the following. Except for debugging
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* purpose like when using gst-launch.
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* So here we handle the two cases where the first
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* GstGLContext is either created in the main thread
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* or from another thread like a streaming thread
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*/
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if ([NSThread isMainThread]) {
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/* In the main thread so just do the call now */
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/* The sharedApplication class method initializes
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* the display environment and connects your program
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* to the window server and the display server
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*/
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/* TODO: so consider to create GstGLDisplayCocoa
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* in gst/gl/cocoa/gstgldisplay_cocoa.h/c
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*/
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/* has to be called in the main thread */
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[NSApplication sharedApplication];
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GST_DEBUG ("NSApp initialized");
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} else {
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/* Not in the main thread, assume there is a
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* glib main loop running this is for debugging
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* purposes so that's ok to let us a chance
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*/
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GMainContext *context;
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gboolean is_loop_running = FALSE;
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gint64 end_time = 0;
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context = g_main_context_default ();
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if (g_main_context_is_owner (context)) {
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/* At the thread running the default GLib main context but
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* not the Cocoa main thread
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* We can't do anything here
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*/
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} else if (g_main_context_acquire (context)) {
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/* No main loop running on the default main context,
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* we can't do anything here */
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g_main_context_release (context);
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} else {
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/* Main loop running on the default main context but it
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* is not running in this thread */
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g_mutex_init (&nsapp_lock);
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g_cond_init (&nsapp_cond);
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g_mutex_lock (&nsapp_lock);
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g_idle_add_full (G_PRIORITY_HIGH, gst_gl_window_cocoa_init_nsapp, NULL, NULL);
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end_time = g_get_monotonic_time () + 500 * 1000;
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is_loop_running = g_cond_wait_until (&nsapp_cond, &nsapp_lock, end_time);
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g_mutex_unlock (&nsapp_lock);
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if (!is_loop_running) {
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GST_WARNING ("no mainloop running");
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}
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g_cond_clear (&nsapp_cond);
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g_mutex_clear (&nsapp_lock);
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}
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}
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[pool release];
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#endif
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}
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static void
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gst_gl_context_cocoa_init (GstGLContextCocoa * context)
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{
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context->priv = GST_GL_CONTEXT_COCOA_GET_PRIVATE (context);
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}
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/* Must be called in the gl thread */
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GstGLContextCocoa *
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gst_gl_context_cocoa_new (void)
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{
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GstGLContextCocoa *context = g_object_new (GST_GL_TYPE_CONTEXT_COCOA, NULL);
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return context;
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}
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static gboolean
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gst_gl_context_cocoa_create_context (GstGLContext *context, GstGLAPI gl_api,
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GstGLContext *other_context, GError **error)
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{
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GstGLContextCocoa *context_cocoa = GST_GL_CONTEXT_COCOA (context);
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GstGLContextCocoaPrivate *priv = context_cocoa->priv;
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GstGLWindow *window = gst_gl_context_get_window (context);
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GstGLWindowCocoa *window_cocoa = GST_GL_WINDOW_COCOA (window);
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__block NSOpenGLContext *glContext = nil;
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#ifndef GNUSTEP
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priv->source_id = g_timeout_add (200, gst_gl_window_cocoa_nsapp_iteration, NULL);
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#endif
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priv->gl_context = nil;
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if (other_context)
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priv->external_gl_context = (NSOpenGLContext *) gst_gl_context_get_gl_context (other_context);
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else
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priv->external_gl_context = NULL;
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dispatch_sync (dispatch_get_main_queue (), ^{
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NSAutoreleasePool *pool;
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NSOpenGLPixelFormat *fmt = nil;
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GstGLNSView *glView = nil;
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NSOpenGLPixelFormatAttribute attribs[] = {
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NSOpenGLPFADoubleBuffer,
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NSOpenGLPFAAccumSize, 32,
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0
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};
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NSRect rect;
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NSWindow *window_handle;
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pool = [[NSAutoreleasePool alloc] init];
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#ifdef GNUSTEP
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[NSApplication sharedApplication];
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#endif
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rect.origin.x = 0;
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rect.origin.y = 0;
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rect.size.width = 320;
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rect.size.height = 240;
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gst_gl_window_cocoa_create_window (window_cocoa, rect);
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window_handle = (NSWindow *) gst_gl_window_get_window_handle (window);
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fmt = [[NSOpenGLPixelFormat alloc] initWithAttributes:attribs];
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if (!fmt) {
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gst_object_unref (window);
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GST_WARNING ("cannot create NSOpenGLPixelFormat");
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return;
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}
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glView = [[GstGLNSView alloc] initWithFrame:window_cocoa rect:rect];
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[window_handle setContentView:glView];
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#ifndef GNUSTEP
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glContext = [[NSOpenGLContext alloc] initWithFormat:fmt
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shareContext:context_cocoa->priv->external_gl_context];
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GST_DEBUG ("NSOpenGL context created: %"G_GUINTPTR_FORMAT, (guintptr) glContext);
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context_cocoa->priv->gl_context = glContext;
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[glContext setView:glView];
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#else
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/* FIXME try to make context sharing work in GNUstep */
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context_cocoa->priv->gl_context = glContext;
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#endif
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[pool release];
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});
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if (!glContext) {
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g_source_remove (priv->source_id);
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priv->source_id = 0;
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return FALSE;
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}
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/* OpenGL context is made current only one time threre.
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* Indeed, all OpenGL calls are made in only one thread,
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* the Application thread */
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[glContext makeCurrentContext];
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[glContext update];
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/* Back and front buffers are swapped only during the vertical retrace of the monitor.
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* Discarded if you configured your driver to Never-use-V-Sync.
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*/
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NS_DURING {
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if (glContext) {
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#ifdef GNUSTEP
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const long swapInterval = 1;
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#else
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const GLint swapInterval = 1;
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#endif
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[glContext setValues:&swapInterval forParameter:NSOpenGLCPSwapInterval];
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}
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} NS_HANDLER {
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GST_DEBUG ("your back-end does not implement NSOpenglContext::setValues\n");
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}
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NS_ENDHANDLER
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GST_DEBUG ("opengl GstGLNSWindow initialized");
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gst_object_unref (window);
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return TRUE;
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}
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static void
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gst_gl_context_cocoa_destroy_context (GstGLContext *context)
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{
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GstGLContextCocoa *context_cocoa = GST_GL_CONTEXT_COCOA (context);
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GstGLContextCocoaPrivate *priv = context_cocoa->priv;
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/* FIXME: Need to release context and other things? */
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if (priv->source_id) {
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g_source_remove (priv->source_id);
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priv->source_id = 0;
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}
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}
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static guintptr
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gst_gl_context_cocoa_get_gl_context (GstGLContext * context)
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{
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return (guintptr) GST_GL_CONTEXT_COCOA (context)->priv->gl_context;
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}
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static gboolean
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gst_gl_context_cocoa_activate (GstGLContext * context, gboolean activate)
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{
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GstGLContextCocoa *context_cocoa;
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context_cocoa = GST_GL_CONTEXT_COCOA (context);
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if (activate)
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[context_cocoa->priv->gl_context makeCurrentContext];
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else
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[NSOpenGLContext clearCurrentContext];
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return TRUE;
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}
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static GstGLAPI
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gst_gl_context_cocoa_get_gl_api (GstGLContext * context)
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{
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return GST_GL_API_OPENGL;
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}
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static GstGLPlatform
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gst_gl_context_cocoa_get_gl_platform (GstGLContext * context)
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{
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return GST_GL_PLATFORM_CGL;
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}
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