gstreamer/gst-libs/gst/gl/gstglwindow_cocoa.m
2017-12-09 19:31:23 +00:00

803 lines
21 KiB
Objective-C
Executable file

/*
* GStreamer
* Copyright (C) 2008 Julien Isorce <julien.isorce@gmail.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
* 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;
- (void) setClosed;
- (BOOL) isClosed;
- (BOOL) canBecomeMainWindow;
- (BOOL) canBecomeKeyWindow;
@end
/* =============================================================*/
/* */
/* GstGLNSOpenGLView declaration */
/* */
/* =============================================================*/
@interface GstGLNSOpenGLView: NSOpenGLView {
GstGLWindowPrivate *m_priv;
gint m_resizeCount;
}
- (id) initWithFrame:(NSRect)contentRect pixelFormat:(NSOpenGLPixelFormat *)fmt
private: (GstGLWindowPrivate *) priv;
@end
/* =============================================================*/
/* */
/* AppThreadPerformer declaration */
/* */
/* =============================================================*/
/* Perform actions in the Application thread */
@interface AppThreadPerformer : NSObject {
GstGLWindowPrivate *m_priv;
GstGLWindowCB m_callback;
GstGLWindowCB2 m_callback2;
gpointer m_data;
gint m_width;
gint m_height;
}
- (id) initWithPrivate: (GstGLWindowPrivate *) priv;
- (id) initWithCallback: (GstGLWindowCB) callback userData: (gpointer) data;
- (id) initWithSize: (GstGLWindowCB2) callback userData: (gpointer) data toSize: (NSSize) size private: (GstGLWindowPrivate *) priv;
- (id) initWithAll: (GstGLWindowCB) callback userData: (gpointer) data private: (GstGLWindowPrivate *) priv;
- (void) updateWindow;
- (void) sendToApp;
- (void) setWindow;
- (void) stopApp;
- (void) closeWindow;
@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;
NSOpenGLContext *gl_context;
NSOpenGLContext *external_gl_context;
GstGLWindowCB draw_cb;
gpointer draw_data;
GstGLWindowCB2 resize_cb;
gpointer resize_data;
GstGLWindowCB close_cb;
gpointer close_data;
gboolean visible;
NSWindow *parent;
NSThread *thread;
gboolean running;
guint source_id;
};
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;
void gst_gl_window_init_platform ()
{
#ifndef GNUSTEP
NSAutoreleasePool* pool = [[NSAutoreleasePool alloc] init];
[NSApplication sharedApplication];
[pool release];
#endif
}
/* 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);
}
}
gboolean
gst_gl_window_nsapp_iteration (gpointer data)
{
NSAutoreleasePool *pool = [[NSAutoreleasePool alloc] init];
NSEvent *event = nil;
if ([NSThread isMainThread]) {
while ((event = ([NSApp nextEventMatchingMask:NSAnyEventMask
untilDate:[NSDate dateWithTimeIntervalSinceNow:0.5]
inMode:NSDefaultRunLoopMode dequeue:YES])) != nil)
[NSApp sendEvent:event];
}
[pool release];
return TRUE;
}
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 (gulong external_gl_context)
{
GstGLWindow *window = g_object_new (GST_GL_TYPE_WINDOW, NULL);
GstGLWindowPrivate *priv = window->priv;
NSRect rect;
NSAutoreleasePool *pool = nil;
priv->internal_win_id = nil;
priv->gl_context = nil;
priv->external_gl_context = (NSOpenGLContext *) external_gl_context;
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;
priv->thread = nil;
priv->running = TRUE;
GSRegisterCurrentThread();
pool = [[NSAutoreleasePool alloc] init];
#ifdef GNUSTEP
[NSApplication sharedApplication];
#endif
rect.origin.x = 0;
rect.origin.y = 0;
rect.size.width = 320;
rect.size.height = 240;
priv->internal_win_id =[[GstGLNSWindow alloc] initWithContentRect:rect styleMask:
(NSTitledWindowMask | NSClosableWindowMask |
NSResizableWindowMask | NSMiniaturizableWindowMask)
backing: NSBackingStoreBuffered defer: NO screen: nil gstWin: priv];
g_debug ("NSWindow id: %lud\n", (gulong) priv->internal_win_id);
priv->thread = [NSThread currentThread];
[NSApp setDelegate: priv->internal_win_id];
[pool release];
#ifndef GNUSTEP
priv->source_id = g_timeout_add_seconds (1, gst_gl_window_nsapp_iteration, NULL);
#endif
return window;
}
GQuark
gst_gl_window_error_quark (void)
{
return g_quark_from_static_string ("gst-gl-window-error");
}
gulong
gst_gl_window_get_internal_gl_context (GstGLWindow * window)
{
GstGLWindowPrivate *priv = window->priv;
return (gulong) priv->gl_context;
}
void
callback_activate_gl_context (GstGLWindowPrivate * priv)
{
[priv->gl_context makeCurrentContext];
}
void
callback_inactivate_gl_context (GstGLWindowPrivate * priv)
{
//FIXME: [priv->gl_context clearCurrentContext];
}
void
gst_gl_window_activate_gl_context (GstGLWindow * window, gboolean activate)
{
GstGLWindowPrivate *priv = window->priv;
if (activate)
gst_gl_window_send_message (window,
GST_GL_WINDOW_CB (callback_activate_gl_context), priv);
else
gst_gl_window_send_message (window,
GST_GL_WINDOW_CB (callback_inactivate_gl_context), priv);
}
void
gst_gl_window_set_external_window_id (GstGLWindow * window, gulong id)
{
GstGLWindowPrivate *priv = window->priv;
g_source_remove (priv->source_id);
if (GSRegisterCurrentThread()) {
NSAutoreleasePool *pool = [[NSAutoreleasePool alloc] init];
AppThreadPerformer* app_thread_performer = [[AppThreadPerformer alloc] initWithPrivate:priv];
priv->parent = (NSWindow*) id;
[app_thread_performer performSelectorOnMainThread:@selector(setWindow)
withObject:0 waitUntilDone:YES];
[pool release];
GSUnregisterCurrentThread();
}
else
g_debug ("failed to register current thread, cannot set external window id\n");
}
/* 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, gint width, gint height)
{
gst_gl_window_draw (window, width, height);
}
/* Thread safe */
void
gst_gl_window_draw (GstGLWindow * window, gint width, gint height)
{
GstGLWindowPrivate *priv = window->priv;
if (GSRegisterCurrentThread()) {
NSAutoreleasePool *pool = [[NSAutoreleasePool alloc] init];
AppThreadPerformer* app_thread_performer = [[AppThreadPerformer alloc] initWithPrivate:priv];
[app_thread_performer performSelector:@selector(updateWindow)
onThread:priv->thread withObject:nil waitUntilDone:YES];
if (!priv->parent && !priv->visible) {
static gint x = 0;
static gint y = 0;
NSRect mainRect = [[NSScreen mainScreen] visibleFrame];
NSRect windowRect = [priv->internal_win_id frame];
g_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 = width;
windowRect.size.height = height;
[priv->internal_win_id setFrame:windowRect display:NO];
g_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
g_debug ("make the window available\n");
[priv->internal_win_id makeMainWindow];
#endif
[priv->internal_win_id orderFront:priv->internal_win_id];
//[priv->internal_win_id setViewsNeedDisplay:YES];
priv->visible = TRUE;
}
[pool release];
GSUnregisterCurrentThread();
}
else
g_debug ("failed to register current thread, cannot draw\n");
}
void
gst_gl_window_run_loop (GstGLWindow * window)
{
GstGLWindowPrivate *priv = window->priv;
NSAutoreleasePool *pool = [[NSAutoreleasePool alloc] init];
#ifndef GNUSTEP
NSRunLoop *run_loop = [NSRunLoop currentRunLoop];
#endif
g_debug ("begin loop\n");
if (priv->internal_win_id != nil) {
#ifndef GNUSTEP
while (priv->running)
[run_loop runMode:NSDefaultRunLoopMode beforeDate:[NSDate distantFuture]];
#else
[NSApp run];
#endif
[priv->internal_win_id release];
priv->internal_win_id = nil;
}
[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() || 1) {
GstGLWindowPrivate *priv = window->priv;
NSAutoreleasePool *pool = [[NSAutoreleasePool alloc] init];
AppThreadPerformer* app_thread_performer = [[AppThreadPerformer alloc] initWithAll:callback
userData:data private:priv];
[app_thread_performer performSelector:@selector(stopApp) onThread:priv->thread
withObject:nil waitUntilDone:YES];
[pool release];
GSUnregisterCurrentThread();
}
else
g_debug ("failed to register current thread, application thread is lost\n");
}
}
/* 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 performSelector:@selector(sendToApp) onThread:priv->thread
withObject:nil waitUntilDone:YES];
[pool release];
GSUnregisterCurrentThread();
}
else
g_debug ("failed to register current thread, cannot send message\n");
}
}
/* =============================================================*/
/* */
/* GstGLNSWindow implementation */
/* */
/* =============================================================*/
@implementation GstGLNSWindow
- (id) initWithContentRect: (NSRect) contentRect
styleMask: (unsigned int) styleMask
backing: (NSBackingStoreType) bufferingType
defer: (BOOL) flag screen: (NSScreen *) aScreen
gstWin: (GstGLWindowPrivate *) priv {
GstGLNSOpenGLView *glView = nil;
NSOpenGLPixelFormat *fmt = nil;
NSOpenGLContext *glContext = nil;
NSOpenGLPixelFormatAttribute attribs[] = {
NSOpenGLPFADoubleBuffer,
NSOpenGLPFADepthSize, 32,
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\n");
glView = [GstGLNSOpenGLView alloc];
fmt = [[NSOpenGLPixelFormat alloc] initWithAttributes:attribs];
if (!fmt) {
g_warning ("cannot create NSOpenGLPixelFormat");
return nil;
}
glView = [glView initWithFrame:contentRect pixelFormat:fmt private: m_priv];
[self setContentView:glView];
#ifndef GNUSTEP
glContext = [[NSOpenGLContext alloc] initWithFormat:fmt
shareContext:m_priv->external_gl_context];
g_debug ("NSOpenGL context created: %lud\n", (gulong) glContext);
priv->gl_context = glContext;
[glView setOpenGLContext:glContext];
#else
glContext = [glView openGLContext];
#endif
/* 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 (glContext) {
#ifdef GNUSTEP
const long swapInterval = 1;
#else
const GLint swapInterval = 1;
#endif
[[glView openGLContext] setValues:&swapInterval forParameter:NSOpenGLCPSwapInterval];
}
} NS_HANDLER {
g_debug ("your back-end does not implement NSOpenglContext::setValues\n");
}
NS_ENDHANDLER
g_debug ("opengl GstGLNSWindow initialized: %d x %d\n",
(gint) contentRect.size.width, (gint) contentRect.size.height);
[self setTitle:@"OpenGL renderer"];
[self setBackgroundColor:[NSColor clearColor]];
[self orderOut:m_priv->internal_win_id];
return self;
}
- (void) setClosed {
m_isClosed = YES;
}
- (BOOL) isClosed {
return m_isClosed;
}
- (BOOL) canBecomeMainWindow {
return YES;
}
- (BOOL) canBecomeKeyWindow {
return YES;
}
/* Called in the main thread which is never the gl thread */
- (BOOL) windowShouldClose:(id)sender {
NSAutoreleasePool *pool = [[NSAutoreleasePool alloc] init];
AppThreadPerformer* app_thread_performer = [[AppThreadPerformer alloc]
initWithPrivate:m_priv];
g_debug ("user clicked the close button\n");
[app_thread_performer performSelector:@selector(closeWindow) onThread:m_priv->thread
withObject:nil waitUntilDone:YES];
[pool release];
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 {
}
@end
/* =============================================================*/
/* */
/* GstGLNSOpenGLView implementation */
/* */
/* =============================================================*/
@implementation GstGLNSOpenGLView
- (id)initWithFrame:(NSRect)contentRect pixelFormat:(NSOpenGLPixelFormat *)fmt private: (GstGLWindowPrivate *) priv {
self = [super initWithFrame: contentRect pixelFormat: fmt];
m_priv = priv;
m_resizeCount = 0;
#ifndef GNUSTEP
[self setWantsLayer:NO];
#endif
return self;
}
- (void)reshape {
if (m_resizeCount % 5 == 0) {
m_resizeCount = 0;
if (m_priv->resize_cb) {
NSAutoreleasePool *pool = [[NSAutoreleasePool alloc] init];
NSRect bounds = [self bounds];
AppThreadPerformer* app_thread_performer = [[AppThreadPerformer alloc]
initWithSize:m_priv->resize_cb userData:m_priv->resize_data
toSize:bounds.size private:m_priv];
[app_thread_performer performSelector:@selector(resizeWindow) onThread:m_priv->thread
withObject:nil waitUntilDone:YES];
[pool release];
}
}
m_resizeCount++;
}
- (void) update {
}
@end
/* =============================================================*/
/* */
/* AppThreadPerformer implementation */
/* */
/* =============================================================*/
@implementation AppThreadPerformer
- (id) initWithPrivate: (GstGLWindowPrivate *) priv {
m_priv = priv;
m_callback = NULL;
m_callback2 = NULL;
m_data = NULL;
m_width = 0;
m_height = 0;
return self;
}
- (id) initWithCallback: (GstGLWindowCB) callback userData: (gpointer) data {
m_priv = NULL;
m_callback = callback;
m_callback2 = NULL;
m_data = data;
m_width = 0;
m_height = 0;
return self;
}
- (id) initWithSize: (GstGLWindowCB2) callback userData: (gpointer) data
toSize: (NSSize) size private: (GstGLWindowPrivate *) priv {
m_priv = priv;
m_callback = NULL;
m_callback2 = callback;
m_data = data;
m_width = size.width;
m_height = size.height;
return self;
}
- (id) initWithAll: (GstGLWindowCB) callback userData: (gpointer) data
private: (GstGLWindowPrivate *) priv {
m_priv = priv;
m_callback = callback;
m_callback2 = NULL;
m_data = data;
m_width = 0;
m_height = 0;
return self;
}
- (void) updateWindow {
if (m_priv->running) {
if (![m_priv->internal_win_id isClosed]) {
NSAutoreleasePool *pool = [[NSAutoreleasePool alloc] init];
/* 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];
[pool release];
}
}
}
- (void) resizeWindow {
if (m_priv->running && ![m_priv->internal_win_id isClosed]) {
m_callback2 (m_data, m_width, m_height);
[[[m_priv->internal_win_id contentView] openGLContext] update];
m_priv->draw_cb (m_priv->draw_data);
[[[m_priv->internal_win_id contentView] openGLContext] flushBuffer];
}
}
- (void) sendToApp {
if (m_priv->running && ![m_priv->internal_win_id isClosed])
m_callback (m_data);
}
- (void) setWindow {
NSAutoreleasePool *pool = [[NSAutoreleasePool alloc] init];
NSWindow *window = m_priv->parent;
[m_priv->internal_win_id orderOut:m_priv->internal_win_id];
[window setContentView: [m_priv->internal_win_id contentView]];
[pool release];
}
- (void) stopApp {
m_priv->running = FALSE;
m_callback (m_data);
#ifdef GNUSTEP
NSAutoreleasePool *pool = [[NSAutoreleasePool alloc] init];
if ([NSApp isRunning])
[NSApp stop:self];
[pool release];
#endif
}
- (void) closeWindow {
[m_priv->internal_win_id setClosed];
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;
}
@end