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gl: add GstGLDisplayCocoa

Browse source 
https://bugzilla.gnome.org/show_bug.cgi?id=746012
This commit is contained in:
Julien Isorce 2015-03-11 00:06:55 +00:00
parent 5667d34182
commit 802bf79998
5 changed files with 319 additions and 173 deletions
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2
gst-libs/gst/gl/cocoa/Makefile.am
View file

@ -5,9 +5,11 @@ noinst_LTLIBRARIES = libgstgl-cocoa.la
libgstgl_cocoa_la_SOURCES = \
gstglwindow_cocoa.m \
gstglcontext_cocoa.m \
gstgldisplay_cocoa.m \
gstglcaopengllayer.m
noinst_HEADERS = \
gstgldisplay_cocoa.h \
gstglwindow_cocoa.h \
gstgl_cocoa_private.h

171
gst-libs/gst/gl/cocoa/gstglcontext_cocoa.m
View file

@ -44,165 +44,6 @@ GST_DEBUG_CATEGORY_STATIC (gst_gl_context_cocoa_debug);
G_DEFINE_TYPE_WITH_CODE (GstGLContextCocoa, gst_gl_context_cocoa,
GST_GL_TYPE_CONTEXT, GST_DEBUG_CATEGORY_INIT (gst_gl_context_cocoa_debug, "glcontext_cocoa", 0, "Cocoa GL Context"); );
/* Define this if the GLib patch from
* https://bugzilla.gnome.org/show_bug.cgi?id=741450
* is used
*/
#ifndef GSTREAMER_GLIB_COCOA_NSAPPLICATION
static gboolean gst_gl_window_cocoa_nsapp_iteration (gpointer data);
static GMutex nsapp_lock;
static GCond nsapp_cond;
static gint nsapp_count = 0;
static gint nsapp_source_id = 0;
static gboolean
gst_gl_window_cocoa_init_nsapp (gpointer data)
{
NSAutoreleasePool *pool = nil;
g_mutex_lock (&nsapp_lock);
pool = [[NSAutoreleasePool alloc] init];
/* The sharedApplication class method initializes
* the display environment and connects your program
* to the window server and the display server
*/
/* TODO: so consider to create GstGLDisplayCocoa
* in gst/gl/cocoa/gstgldisplay_cocoa.h/c
*/
/* has to be called in the main thread */
if ([NSThread isMainThread]) {
[NSApplication sharedApplication];
GST_DEBUG ("NSApp initialized from a GTimeoutSource");
nsapp_source_id = g_timeout_add (60, gst_gl_window_cocoa_nsapp_iteration, NULL);
}
[pool release];
g_cond_signal (&nsapp_cond);
g_mutex_unlock (&nsapp_lock);
return FALSE;
}
static gboolean
gst_gl_window_cocoa_nsapp_iteration (gpointer data)
{
NSAutoreleasePool *pool = [[NSAutoreleasePool alloc] init];
NSEvent *event = nil;
if ([NSThread isMainThread]) {
while ((event = ([NSApp nextEventMatchingMask:NSAnyEventMask
untilDate:[NSDate dateWithTimeIntervalSinceNow:0.05]
inMode:NSDefaultRunLoopMode dequeue:YES])) != nil) {
[NSApp sendEvent:event];
}
}
[pool release];
return TRUE;
}
static void
gst_gl_context_cocoa_check_nsapp_loop (gboolean activate)
{
g_mutex_lock (&nsapp_lock);
if (activate) ++nsapp_count;
else --nsapp_count;
if (nsapp_count == 0) {
if (nsapp_source_id)
g_source_remove (nsapp_source_id);
nsapp_source_id = 0;
}
g_mutex_unlock (&nsapp_lock);
}
static gpointer
gst_gl_context_cocoa_setup_nsapp (gpointer data)
{
NSAutoreleasePool *pool = [[NSAutoreleasePool alloc] init];
/* [NSApplication sharedApplication] will usually be
* called in your application so it's not necessary
* to do that the following. Except for debugging
* purpose like when using gst-launch.
* So here we handle the two cases where the first
* GstGLContext is either created in the main thread
* or from another thread like a streaming thread
*/
if ([NSThread isMainThread]) {
/* In the main thread so just do the call now */
/* The sharedApplication class method initializes
* the display environment and connects your program
* to the window server and the display server
*/
/* TODO: so consider to create GstGLDisplayCocoa
* in gst/gl/cocoa/gstgldisplay_cocoa.h/c
*/
/* has to be called in the main thread */
[NSApplication sharedApplication];
GST_DEBUG ("NSApp initialized");
} else {
/* Not in the main thread, assume there is a
* glib main loop running this is for debugging
* purposes so that's ok to let us a chance
*/
GMainContext *context;
gboolean is_loop_running = FALSE;
gint64 end_time = 0;
context = g_main_context_default ();
if (g_main_context_is_owner (context)) {
/* At the thread running the default GLib main context but
* not the Cocoa main thread
* We can't do anything here
*/
} else if (g_main_context_acquire (context)) {
/* No main loop running on the default main context,
* we can't do anything here */
g_main_context_release (context);
} else {
/* Main loop running on the default main context but it
* is not running in this thread */
g_mutex_lock (&nsapp_lock);
g_idle_add_full (G_PRIORITY_HIGH, gst_gl_window_cocoa_init_nsapp, NULL, NULL);
end_time = g_get_monotonic_time () + 500 * 1000;
is_loop_running = g_cond_wait_until (&nsapp_cond, &nsapp_lock, end_time);
g_mutex_unlock (&nsapp_lock);
if (!is_loop_running) {
GST_WARNING ("no mainloop running");
}
}
}
[pool release];
return NULL;
}
#endif
static void
gst_gl_context_cocoa_class_init (GstGLContextCocoaClass * klass)
{
@ -336,12 +177,6 @@ gst_gl_context_cocoa_create_context (GstGLContext *context, GstGLAPI gl_api,
CGLError ret;
gint npix;
#ifndef GSTREAMER_GLIB_COCOA_NSAPPLICATION
static GOnce once = G_ONCE_INIT;
g_once (&once, gst_gl_context_cocoa_setup_nsapp, context);
gst_gl_context_cocoa_check_nsapp_loop (TRUE);
#endif
priv->gl_context = nil;
if (other_context)
priv->external_gl_context = (CGLContextObj) gst_gl_context_get_gl_context (other_context);
@ -377,9 +212,6 @@ gst_gl_context_cocoa_create_context (GstGLContext *context, GstGLAPI gl_api,
window_cocoa);
if (!context_cocoa->priv->gl_context) {
#ifndef GSTREAMER_GLIB_COCOA_NSAPPLICATION
gst_gl_context_cocoa_check_nsapp_loop (FALSE);
#endif
goto error;
}
@ -407,9 +239,6 @@ static void
gst_gl_context_cocoa_destroy_context (GstGLContext *context)
{
/* FIXME: Need to release context and other things? */
#ifndef GSTREAMER_GLIB_COCOA_NSAPPLICATION
gst_gl_context_cocoa_check_nsapp_loop (FALSE);
#endif
}
static guintptr

62
gst-libs/gst/gl/cocoa/gstgldisplay_cocoa.h Normal file
View file

@ -0,0 +1,62 @@
/*
* GStreamer
* Copyright (C) 2015 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., 51 Franklin St, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
#ifndef __GST_GL_DISPLAY_COCOA_H__
#define __GST_GL_DISPLAY_COCOA_H__
#include <gst/gst.h>
#include <gst/gl/gstgl_fwd.h>
#include <gst/gl/gstgldisplay.h>
G_BEGIN_DECLS
GType gst_gl_display_cocoa_get_type (void);
#define GST_TYPE_GL_DISPLAY_COCOA (gst_gl_display_cocoa_get_type())
#define GST_GL_DISPLAY_COCOA(obj) (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_GL_DISPLAY_COCOA,GstGLDisplayCocoa))
#define GST_GL_DISPLAY_COCOA_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST((klass), GST_TYPE_GL_DISPLAY_COCOA,GstGLDisplayCocoaClass))
#define GST_IS_GL_DISPLAY_COCOA(obj) (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_GL_DISPLAY_COCOA))
#define GST_IS_GL_DISPLAY_COCOA_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE((klass), GST_TYPE_GL_DISPLAY_COCOA))
#define GST_GL_DISPLAY_COCOA_CAST(obj) ((GstGLDisplayCocoa*)(obj))
typedef struct _GstGLDisplayCocoa GstGLDisplayCocoa;
typedef struct _GstGLDisplayCocoaClass GstGLDisplayCocoaClass;
/**
* GstGLDisplayCocoa:
*
* Initialized NSApp if the application has not done it.
*/
struct _GstGLDisplayCocoa
{
GstGLDisplay parent;
};
struct _GstGLDisplayCocoaClass
{
GstGLDisplayClass object_class;
};
GstGLDisplayCocoa *gst_gl_display_cocoa_new (void);
G_END_DECLS
#endif /* __GST_GL_DISPLAY_COCOA_H__ */

247
gst-libs/gst/gl/cocoa/gstgldisplay_cocoa.m Normal file
View file

@ -0,0 +1,247 @@
/*
* GStreamer
* Copyright (C) 2015 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., 51 Franklin St, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <Cocoa/Cocoa.h>
#include <gst/gl/cocoa/gstgldisplay_cocoa.h>
GST_DEBUG_CATEGORY_STATIC (gst_gl_display_debug);
#define GST_CAT_DEFAULT gst_gl_display_debug
G_DEFINE_TYPE (GstGLDisplayCocoa, gst_gl_display_cocoa, GST_TYPE_GL_DISPLAY);
static void gst_gl_display_cocoa_finalize (GObject * object);
static guintptr gst_gl_display_cocoa_get_handle (GstGLDisplay * display);
/* Define this if the GLib patch from
* https://bugzilla.gnome.org/show_bug.cgi?id=741450
* is used
*/
#ifndef GSTREAMER_GLIB_COCOA_NSAPPLICATION
static GstGLDisplayCocoa *singleton = NULL;
static gint nsapp_source_id = 0;
static GMutex nsapp_lock;
static GCond nsapp_cond;
static gboolean
gst_gl_display_cocoa_nsapp_iteration (gpointer data)
{
NSAutoreleasePool *pool = nil;
NSEvent *event = nil;
if (![NSThread isMainThread]) {
GST_WARNING ("NSApp iteration not running in the main thread");
return FALSE;
}
pool = [[NSAutoreleasePool alloc] init];
while ((event = ([NSApp nextEventMatchingMask:NSAnyEventMask
untilDate:[NSDate dateWithTimeIntervalSinceNow:0.05]
inMode:NSDefaultRunLoopMode dequeue:YES])) != nil) {
[NSApp sendEvent:event];
}
[pool release];
return TRUE;
}
static void
gst_gl_display_cocoa_open_and_attach_source (gpointer data)
{
NSAutoreleasePool *pool = [[NSAutoreleasePool alloc] init];
if ([NSThread isMainThread]) {
/* The sharedApplication class method initializes
* the display environment and connects your program
* to the window server and the display server.
* It has to be done in the main thread.
*/
[NSApplication sharedApplication];
GST_DEBUG ("Custom NSApp initialization done");
nsapp_source_id = g_timeout_add (60, gst_gl_display_cocoa_nsapp_iteration,
NULL);
GST_DEBUG ("NSApp iteration loop attached, id %d", nsapp_source_id);
}
[pool release];
}
static gboolean
gst_gl_display_cocoa_init_nsapp (gpointer data)
{
g_mutex_lock (&nsapp_lock);
gst_gl_display_cocoa_open_and_attach_source (data);
g_cond_signal (&nsapp_cond);
g_mutex_unlock (&nsapp_lock);
return FALSE;
}
static GstGLDisplayCocoa *
gst_gl_display_cocoa_setup_nsapp (gpointer data)
{
GMainContext *context = g_main_context_default ();
gint delta_ms = 0;
g_mutex_lock (&nsapp_lock);
if (singleton) {
GST_DEBUG ("Get existing display");
singleton = gst_object_ref (singleton);
g_mutex_unlock (&nsapp_lock);
return singleton;
}
if (NSApp != nil && !singleton) {
GstGLDisplayCocoa *ret = g_object_new (GST_TYPE_GL_DISPLAY_COCOA, NULL);
g_mutex_unlock (&nsapp_lock);
return ret;
}
/* All application have to start with [NSApplication sharedApplication]
* so if NSApp is nil here let's assume this is a debugging application
* that runs a glib main loop. */
g_assert (NSApp == nil);
GST_DEBUG ("The application has not initialized NSApp");
if ([NSThread isMainThread]) {
GST_DEBUG ("Setting up NSApp from the main thread");
if (g_main_context_is_owner (context)) {
GST_DEBUG ("The main thread own the context");
gst_gl_display_cocoa_open_and_attach_source (data);
} else if (g_main_context_acquire (context)) {
GST_DEBUG ("The main loop should be shortly running in the main thread");
gst_gl_display_cocoa_open_and_attach_source (data);
g_main_context_release (context);
} else {
GST_WARNING ("Main loop running in another thread");
}
} else {
GST_DEBUG ("Setting up NSApp not from the main thread");
if (g_main_context_is_owner (context)) {
GST_WARNING ("Default context not own by the main thread");
delta_ms = -1;
} else if (g_main_context_acquire (context)) {
GST_DEBUG ("The main loop should be shortly running in the main thread");
delta_ms = 1000;
g_main_context_release (context);
} else {
GST_DEBUG ("Main loop running in main thread");
delta_ms = 500;
}
if (delta_ms > 0) {
gint64 end_time = g_get_monotonic_time () + delta_ms * 1000;;
g_idle_add_full (G_PRIORITY_HIGH, gst_gl_display_cocoa_init_nsapp, data, NULL);
g_cond_wait_until (&nsapp_cond, &nsapp_lock, end_time);
}
}
if (NSApp == nil) {
GST_ERROR ("Custom NSApp initialization failed");
} else {
GST_DEBUG ("Create display");
singleton = g_object_new (GST_TYPE_GL_DISPLAY_COCOA, NULL);
}
g_mutex_unlock (&nsapp_lock);
return singleton;
}
#endif
static void
gst_gl_display_cocoa_class_init (GstGLDisplayCocoaClass * klass)
{
GST_GL_DISPLAY_CLASS (klass)->get_handle =
GST_DEBUG_FUNCPTR (gst_gl_display_cocoa_get_handle);
G_OBJECT_CLASS (klass)->finalize = gst_gl_display_cocoa_finalize;
}
static void
gst_gl_display_cocoa_init (GstGLDisplayCocoa * display_cocoa)
{
GstGLDisplay *display = (GstGLDisplay *) display_cocoa;
display->type = GST_GL_DISPLAY_TYPE_COCOA;
}
static void
gst_gl_display_cocoa_finalize (GObject * object)
{
#ifndef GSTREAMER_GLIB_COCOA_NSAPPLICATION
g_mutex_lock (&nsapp_lock);
if (singleton) {
GST_DEBUG ("Destroy display");
singleton = NULL;
if (nsapp_source_id) {
GST_DEBUG ("Remove NSApp loop iteration, id %d", nsapp_source_id);
g_source_remove (nsapp_source_id);
}
nsapp_source_id = 0;
g_mutex_unlock (&nsapp_lock);
}
g_mutex_unlock (&nsapp_lock);
#endif
G_OBJECT_CLASS (gst_gl_display_cocoa_parent_class)->finalize (object);
}
/**
* gst_gl_display_cocoa_new:
*
* Create a new #GstGLDisplayCocoa.
*
* Returns: (transfer full): a new #GstGLDisplayCocoa or %NULL
*/
GstGLDisplayCocoa *
gst_gl_display_cocoa_new (void)
{
GST_DEBUG_CATEGORY_GET (gst_gl_display_debug, "gldisplay");
#ifndef GSTREAMER_GLIB_COCOA_NSAPPLICATION
return gst_gl_display_cocoa_setup_nsapp (NULL);
#else
return g_object_new (GST_TYPE_GL_DISPLAY_COCOA, NULL);
#endif
}
static guintptr
gst_gl_display_cocoa_get_handle (GstGLDisplay * display)
{
return (guintptr) NSApp;
}

10
gst-libs/gst/gl/gstgldisplay.c
View file

@ -56,6 +56,9 @@
#include "gl.h"
#include "gstgldisplay.h"
#if GST_GL_HAVE_WINDOW_COCOA
#include <gst/gl/cocoa/gstgldisplay_cocoa.h>
#endif
#if GST_GL_HAVE_WINDOW_X11
#include <gst/gl/x11/gstgldisplay_x11.h>
#endif
@ -159,8 +162,11 @@ gst_gl_display_new (void)
GST_STR_NULL (user_choice), GST_STR_NULL (platform_choice));
#if GST_GL_HAVE_WINDOW_COCOA
if (!display && (!user_choice || g_strstr_len (user_choice, 5, "cocoa")))
display = g_object_new (GST_TYPE_GL_DISPLAY, NULL);
if (!display && (!user_choice || g_strstr_len (user_choice, 5, "cocoa"))) {
display = GST_GL_DISPLAY (gst_gl_display_cocoa_new ());
if (!display)
return NULL;
}
#endif
#if GST_GL_HAVE_WINDOW_X11
if (!display && (!user_choice || g_strstr_len (user_choice, 3, "x11")))