/* GStreamer * OSX video sink * Copyright (C) 2004-6 Zaheer Abbas Merali * Copyright (C) 2007,2008,2009 Pioneers of the Inevitable * * 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. * * The development of this code was made possible due to the involvement of * Pioneers of the Inevitable, the creators of the Songbird Music player. * */ /** * SECTION:element-osxvideosink * * The OSXVideoSink renders video frames to a MacOSX window. The video output * must be directed to a window embedded in an existing NSApp. * * When the NSView to be embedded is created an element #GstMessage with a * name of 'have-ns-view' will be created and posted on the bus. * The pointer to the NSView to embed will be in the 'nsview' field of that * message. The application MUST handle this message and embed the view * appropriately. */ #include "config.h" #include #include #include #include "osxvideosink.h" #include #import "cocoawindow.h" GST_DEBUG_CATEGORY (gst_debug_osx_video_sink); #define GST_CAT_DEFAULT gst_debug_osx_video_sink #include extern void _CFRunLoopSetCurrent (CFRunLoopRef rl); extern pthread_t _CFMainPThread; static GstStaticPadTemplate gst_osx_video_sink_sink_template_factory = GST_STATIC_PAD_TEMPLATE ("sink", GST_PAD_SINK, GST_PAD_ALWAYS, GST_STATIC_CAPS ("video/x-raw, " "framerate = (fraction) [ 0, MAX ], " "width = (int) [ 1, MAX ], " "height = (int) [ 1, MAX ], " #if G_BYTE_ORDER == G_BIG_ENDIAN "format = (string) YUY2") #else "format = (string) UYVY") #endif ); enum { ARG_0, ARG_EMBED, ARG_FORCE_PAR, }; static void gst_osx_video_sink_osxwindow_destroy (GstOSXVideoSink * osxvideosink); static GMutex _run_loop_check_mutex; static GMutex _run_loop_mutex; static GCond _run_loop_cond; static GstOSXVideoSinkClass *sink_class = NULL; static GstVideoSinkClass *parent_class = NULL; /* Helper to trigger calls from the main thread */ static void gst_osx_video_sink_call_from_main_thread(GstOSXVideoSink *osxvideosink, NSObject * object, SEL function, NSObject *data, BOOL waitUntilDone) { NSThread *thread; NSAutoreleasePool *pool = [[NSAutoreleasePool alloc] init]; if (sink_class->ns_app_thread == NULL){ thread = [NSThread mainThread]; } else { thread = sink_class->ns_app_thread; } [object performSelector:function onThread:thread withObject:data waitUntilDone:waitUntilDone]; [pool release]; } /* Poll for cocoa events */ static void run_ns_app_loop (void) { NSEvent *event; NSAutoreleasePool *pool =[[NSAutoreleasePool alloc] init]; NSDate *pollTime = nil; /* when running the loop in a thread we want to sleep as long as possible */ pollTime = [NSDate distantFuture]; do { event = [NSApp nextEventMatchingMask:NSAnyEventMask untilDate:pollTime inMode:NSDefaultRunLoopMode dequeue:YES]; [NSApp sendEvent:event]; } while (event != nil); [pool release]; } static void gst_osx_videosink_check_main_run_loop (GstOSXVideoSink *sink) { /* check if the main run loop is running */ gboolean is_running; /* the easy way */ is_running = [[NSRunLoop mainRunLoop] currentMode] != nil; if (is_running) { goto exit; } else { /* the previous check doesn't always work with main loops that run * cocoa's main run loop manually, like the gdk one, giving false * negatives. This check defers a call to the main thread and waits to * be awaken by this function. */ NSAutoreleasePool *pool = [[NSAutoreleasePool alloc] init]; GstOSXVideoSinkObject * object = (GstOSXVideoSinkObject *) sink->osxvideosinkobject; gint64 abstime; g_mutex_lock (&_run_loop_mutex); [object performSelectorOnMainThread: @selector(checkMainRunLoop) withObject:nil waitUntilDone:NO]; /* Wait 100 ms */ abstime = g_get_monotonic_time () + 100 * 1000; is_running = g_cond_wait_until (&_run_loop_cond, &_run_loop_mutex, abstime); g_mutex_unlock (&_run_loop_mutex); [pool release]; } exit: { GST_DEBUG_OBJECT(sink, "The main runloop %s is running", is_running ? "" : " not "); if (is_running) { sink_class->run_loop_state = GST_OSX_VIDEO_SINK_RUN_LOOP_STATE_RUNNING; sink_class->ns_app_thread = [NSThread mainThread]; } else { sink_class->run_loop_state = GST_OSX_VIDEO_SINK_RUN_LOOP_STATE_NOT_RUNNING; } } } static void gst_osx_video_sink_run_cocoa_loop (GstOSXVideoSink * sink ) { /* Cocoa applications require a main runloop running to dispatch UI * events and process deferred calls to the main thread through * perfermSelectorOnMainThread. * Since the sink needs to create it's own Cocoa window when no * external NSView is passed to the sink through the GstVideoOverlay API, * we need to run the cocoa mainloop somehow. * This run loop can only be started once, by the first sink needing it */ g_mutex_lock (&_run_loop_check_mutex); if (sink_class->run_loop_state == GST_OSX_VIDEO_SINK_RUN_LOOP_STATE_UNKNOWN) { gst_osx_videosink_check_main_run_loop (sink); } if (sink_class->run_loop_state == GST_OSX_VIDEO_SINK_RUN_LOOP_STATE_RUNNING) { g_mutex_unlock (&_run_loop_check_mutex); return; } if (sink_class->ns_app_thread == NULL) { /* run the main runloop in a separate thread */ /* override [NSThread isMainThread] with our own implementation so that we can * make it believe our dedicated thread is the main thread */ Method origIsMainThread = class_getClassMethod([NSThread class], NSSelectorFromString(@"isMainThread")); Method ourIsMainThread = class_getClassMethod([GstOSXVideoSinkObject class], NSSelectorFromString(@"isMainThread")); method_exchangeImplementations(origIsMainThread, ourIsMainThread); sink_class->ns_app_thread = [[NSThread alloc] initWithTarget:sink->osxvideosinkobject selector:@selector(nsAppThread) object:nil]; [sink_class->ns_app_thread start]; g_mutex_lock (&_run_loop_mutex); g_cond_wait (&_run_loop_cond, &_run_loop_mutex); g_mutex_unlock (&_run_loop_mutex); } g_mutex_unlock (&_run_loop_check_mutex); } static void gst_osx_video_sink_stop_cocoa_loop (GstOSXVideoSink * osxvideosink) { } /* This function handles osx window creation */ static gboolean gst_osx_video_sink_osxwindow_create (GstOSXVideoSink * osxvideosink, gint width, gint height) { NSRect rect; GstOSXWindow *osxwindow = NULL; GstStructure *s; GstMessage *msg; gboolean res = TRUE; NSAutoreleasePool *pool = [[NSAutoreleasePool alloc] init]; g_return_val_if_fail (GST_IS_OSX_VIDEO_SINK (osxvideosink), FALSE); GST_DEBUG_OBJECT (osxvideosink, "Creating new OSX window"); osxvideosink->osxwindow = osxwindow = g_new0 (GstOSXWindow, 1); osxwindow->width = width; osxwindow->height = height; osxwindow->closed = FALSE; osxwindow->internal = FALSE; /* Allocate our GstGLView for the window, and then tell the application * about it (hopefully it's listening...) */ rect.origin.x = 0.0; rect.origin.y = 0.0; rect.size.width = (float) osxwindow->width; rect.size.height = (float) osxwindow->height; osxwindow->gstview =[[GstGLView alloc] initWithFrame:rect]; s = gst_structure_new ("have-ns-view", "nsview", G_TYPE_POINTER, osxwindow->gstview, nil); msg = gst_message_new_element (GST_OBJECT (osxvideosink), s); gst_element_post_message (GST_ELEMENT (osxvideosink), msg); GST_INFO_OBJECT (osxvideosink, "'have-ns-view' message sent"); gst_osx_video_sink_run_cocoa_loop (osxvideosink); [osxwindow->gstview setMainThread:sink_class->ns_app_thread]; /* check if have-ns-view was handled and osxwindow->gstview was added to a * superview */ if ([osxwindow->gstview haveSuperview] == NO) { /* have-ns-view wasn't handled, post prepare-xwindow-id */ if (osxvideosink->superview == NULL) { GST_INFO_OBJECT (osxvideosink, "emitting prepare-xwindow-id"); gst_video_overlay_prepare_window_handle (GST_VIDEO_OVERLAY (osxvideosink)); } if (osxvideosink->superview != NULL) { /* prepare-xwindow-id was handled, we have the superview in * osxvideosink->superview. We now add osxwindow->gstview to the superview * from the main thread */ GST_INFO_OBJECT (osxvideosink, "we have a superview, adding our view to it"); gst_osx_video_sink_call_from_main_thread(osxvideosink, osxwindow->gstview, @selector(addToSuperview:), osxvideosink->superview, NO); } else { if (osxvideosink->embed) { /* the view wasn't added to a superview. It's possible that the * application handled have-ns-view, stored our view internally and is * going to add it to a superview later (webkit does that now). */ GST_INFO_OBJECT (osxvideosink, "no superview"); } else { gst_osx_video_sink_call_from_main_thread(osxvideosink, osxvideosink->osxvideosinkobject, @selector(createInternalWindow), nil, YES); GST_INFO_OBJECT (osxvideosink, "No superview, creating an internal window."); } } } [osxwindow->gstview setNavigation: GST_NAVIGATION(osxvideosink)]; [osxvideosink->osxwindow->gstview setKeepAspectRatio: osxvideosink->keep_par]; [pool release]; return res; } static void gst_osx_video_sink_osxwindow_destroy (GstOSXVideoSink * osxvideosink) { NSAutoreleasePool *pool; g_return_if_fail (GST_IS_OSX_VIDEO_SINK (osxvideosink)); pool = [[NSAutoreleasePool alloc] init]; GST_OBJECT_LOCK (osxvideosink); gst_osx_video_sink_call_from_main_thread(osxvideosink, osxvideosink->osxvideosinkobject, @selector(destroy), (id) nil, YES); GST_OBJECT_UNLOCK (osxvideosink); gst_osx_video_sink_stop_cocoa_loop (osxvideosink); [pool release]; } /* This function resizes a GstXWindow */ static void gst_osx_video_sink_osxwindow_resize (GstOSXVideoSink * osxvideosink, GstOSXWindow * osxwindow, guint width, guint height) { GstOSXVideoSinkObject *object = osxvideosink->osxvideosinkobject; NSAutoreleasePool *pool = [[NSAutoreleasePool alloc] init]; g_return_if_fail (osxwindow != NULL); g_return_if_fail (GST_IS_OSX_VIDEO_SINK (osxvideosink)); osxwindow->width = width; osxwindow->height = height; GST_DEBUG_OBJECT (osxvideosink, "Resizing window to (%d,%d)", width, height); /* Directly resize the underlying view */ GST_DEBUG_OBJECT (osxvideosink, "Calling setVideoSize on %p", osxwindow->gstview); gst_osx_video_sink_call_from_main_thread (osxvideosink, object, @selector(resize), (id)nil, YES); [pool release]; } static gboolean gst_osx_video_sink_setcaps (GstBaseSink * bsink, GstCaps * caps) { GstOSXVideoSink *osxvideosink; GstStructure *structure; gboolean res, result = FALSE; gint video_width, video_height; osxvideosink = GST_OSX_VIDEO_SINK (bsink); GST_DEBUG_OBJECT (osxvideosink, "caps: %" GST_PTR_FORMAT, caps); structure = gst_caps_get_structure (caps, 0); res = gst_structure_get_int (structure, "width", &video_width); res &= gst_structure_get_int (structure, "height", &video_height); if (!res) { goto beach; } GST_DEBUG_OBJECT (osxvideosink, "our format is: %dx%d video", video_width, video_height); GST_VIDEO_SINK_WIDTH (osxvideosink) = video_width; GST_VIDEO_SINK_HEIGHT (osxvideosink) = video_height; gst_osx_video_sink_osxwindow_resize (osxvideosink, osxvideosink->osxwindow, video_width, video_height); gst_video_info_from_caps (&osxvideosink->info, caps); result = TRUE; beach: return result; } static GstStateChangeReturn gst_osx_video_sink_change_state (GstElement * element, GstStateChange transition) { GstOSXVideoSink *osxvideosink; GstStateChangeReturn ret; osxvideosink = GST_OSX_VIDEO_SINK (element); GST_DEBUG_OBJECT (osxvideosink, "%s => %s", gst_element_state_get_name(GST_STATE_TRANSITION_CURRENT (transition)), gst_element_state_get_name(GST_STATE_TRANSITION_NEXT (transition))); switch (transition) { case GST_STATE_CHANGE_NULL_TO_READY: break; case GST_STATE_CHANGE_READY_TO_PAUSED: /* Creating our window and our image */ GST_VIDEO_SINK_WIDTH (osxvideosink) = 320; GST_VIDEO_SINK_HEIGHT (osxvideosink) = 240; if (!gst_osx_video_sink_osxwindow_create (osxvideosink, GST_VIDEO_SINK_WIDTH (osxvideosink), GST_VIDEO_SINK_HEIGHT (osxvideosink))) { ret = GST_STATE_CHANGE_FAILURE; goto done; } break; default: break; } ret = (GST_ELEMENT_CLASS (parent_class))->change_state (element, transition); switch (transition) { case GST_STATE_CHANGE_PAUSED_TO_READY: GST_VIDEO_SINK_WIDTH (osxvideosink) = 0; GST_VIDEO_SINK_HEIGHT (osxvideosink) = 0; gst_osx_video_sink_osxwindow_destroy (osxvideosink); break; case GST_STATE_CHANGE_READY_TO_NULL: break; default: break; } done: return ret; } static GstFlowReturn gst_osx_video_sink_show_frame (GstBaseSink * bsink, GstBuffer * buf) { GstOSXVideoSink *osxvideosink; GstBufferObject* bufferobject; NSAutoreleasePool *pool = [[NSAutoreleasePool alloc] init]; osxvideosink = GST_OSX_VIDEO_SINK (bsink); GST_DEBUG ("show_frame"); bufferobject = [[GstBufferObject alloc] initWithBuffer:buf]; gst_osx_video_sink_call_from_main_thread(osxvideosink, osxvideosink->osxvideosinkobject, @selector(showFrame:), bufferobject, NO); [pool release]; return GST_FLOW_OK; } /* Buffer management */ /* =========================================== */ /* */ /* Init & Class init */ /* */ /* =========================================== */ static void gst_osx_video_sink_set_property (GObject * object, guint prop_id, const GValue * value, GParamSpec * pspec) { GstOSXVideoSink *osxvideosink; g_return_if_fail (GST_IS_OSX_VIDEO_SINK (object)); osxvideosink = GST_OSX_VIDEO_SINK (object); switch (prop_id) { case ARG_EMBED: osxvideosink->embed = g_value_get_boolean(value); g_warning ("The \"embed\" property of osxvideosink is deprecated and " "will be removed in the near future. Use the GstVideoOverlay " "instead."); break; case ARG_FORCE_PAR: osxvideosink->keep_par = g_value_get_boolean(value); if (osxvideosink->osxwindow) [osxvideosink->osxwindow->gstview setKeepAspectRatio: osxvideosink->keep_par]; break; default: G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); break; } } static void gst_osx_video_sink_get_property (GObject * object, guint prop_id, GValue * value, GParamSpec * pspec) { GstOSXVideoSink *osxvideosink; g_return_if_fail (GST_IS_OSX_VIDEO_SINK (object)); osxvideosink = GST_OSX_VIDEO_SINK (object); switch (prop_id) { case ARG_EMBED: g_value_set_boolean (value, osxvideosink->embed); break; case ARG_FORCE_PAR: g_value_set_boolean (value, osxvideosink->keep_par); break; default: G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); break; } } static gboolean gst_osx_video_sink_propose_allocation (GstBaseSink * base_sink, GstQuery * query) { gst_query_add_allocation_meta (query, GST_VIDEO_META_API_TYPE, NULL); return TRUE; } static void gst_osx_video_sink_init (GstOSXVideoSink * sink) { sink->osxwindow = NULL; sink->superview = NULL; sink->osxvideosinkobject = [[GstOSXVideoSinkObject alloc] initWithSink:sink]; sink->keep_par = FALSE; } static void gst_osx_video_sink_base_init (gpointer g_class) { GstElementClass *element_class = GST_ELEMENT_CLASS (g_class); gst_element_class_set_static_metadata (element_class, "OSX Video sink", "Sink/Video", "OSX native videosink", "Zaheer Abbas Merali "); gst_element_class_add_pad_template (element_class, gst_static_pad_template_get (&gst_osx_video_sink_sink_template_factory)); } static void gst_osx_video_sink_finalize (GObject *object) { GstOSXVideoSink *osxvideosink = GST_OSX_VIDEO_SINK (object); if (osxvideosink->superview) [osxvideosink->superview release]; if (osxvideosink->osxvideosinkobject) [(GstOSXVideoSinkObject*)(osxvideosink->osxvideosinkobject) release]; G_OBJECT_CLASS (parent_class)->finalize (object); } static void gst_osx_video_sink_class_init (GstOSXVideoSinkClass * klass) { GObjectClass *gobject_class; GstElementClass *gstelement_class; GstBaseSinkClass *gstbasesink_class; gobject_class = (GObjectClass *) klass; gstelement_class = (GstElementClass *) klass; gstbasesink_class = (GstBaseSinkClass *) klass; parent_class = g_type_class_ref (GST_TYPE_VIDEO_SINK); sink_class = klass; klass->run_loop_state = GST_OSX_VIDEO_SINK_RUN_LOOP_STATE_UNKNOWN; klass->ns_app_thread = NULL; gobject_class->set_property = gst_osx_video_sink_set_property; gobject_class->get_property = gst_osx_video_sink_get_property; gobject_class->finalize = gst_osx_video_sink_finalize; gstbasesink_class->set_caps = gst_osx_video_sink_setcaps; gstbasesink_class->preroll = gst_osx_video_sink_show_frame; gstbasesink_class->render = gst_osx_video_sink_show_frame; gstbasesink_class->propose_allocation = gst_osx_video_sink_propose_allocation; gstelement_class->change_state = gst_osx_video_sink_change_state; /** * GstOSXVideoSink:embed * * Set to #TRUE if you are embedding the video window in an application. * **/ g_object_class_install_property (gobject_class, ARG_EMBED, g_param_spec_boolean ("embed", "embed", "For ABI compatiblity only, do not use", FALSE, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS)); /** * GstOSXVideoSink:force-aspect-ratio * * When enabled, scaling will respect original aspect ratio. * **/ g_object_class_install_property (gobject_class, ARG_FORCE_PAR, g_param_spec_boolean ("force-aspect-ratio", "force aspect ration", "When enabled, scaling will respect original aspect ration", TRUE, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS)); } static void gst_osx_video_sink_navigation_send_event (GstNavigation * navigation, GstStructure * structure) { GstOSXVideoSink *osxvideosink = GST_OSX_VIDEO_SINK (navigation); GstPad *peer; GstEvent *event; GstVideoRectangle src, dst, result; NSRect bounds; gdouble x, y, xscale = 1.0, yscale = 1.0; peer = gst_pad_get_peer (GST_VIDEO_SINK_PAD (osxvideosink)); if (!peer || !osxvideosink->osxwindow) return; event = gst_event_new_navigation (structure); bounds = [osxvideosink->osxwindow->gstview getDrawingBounds]; if (osxvideosink->keep_par) { /* We get the frame position using the calculated geometry from _setcaps that respect pixel aspect ratios */ src.w = GST_VIDEO_SINK_WIDTH (osxvideosink); src.h = GST_VIDEO_SINK_HEIGHT (osxvideosink); dst.w = bounds.size.width; dst.h = bounds.size.height; gst_video_sink_center_rect (src, dst, &result, TRUE); result.x += bounds.origin.x; result.y += bounds.origin.y; } else { result.x = bounds.origin.x; result.y = bounds.origin.y; result.w = bounds.size.width; result.h = bounds.size.height; } /* We calculate scaling using the original video frames geometry to include pixel aspect ratio scaling. */ xscale = (gdouble) osxvideosink->osxwindow->width / result.w; yscale = (gdouble) osxvideosink->osxwindow->height / result.h; /* Converting pointer coordinates to the non scaled geometry */ if (gst_structure_get_double (structure, "pointer_x", &x)) { x = MIN (x, result.x + result.w); x = MAX (x - result.x, 0); gst_structure_set (structure, "pointer_x", G_TYPE_DOUBLE, (gdouble) x * xscale, NULL); } if (gst_structure_get_double (structure, "pointer_y", &y)) { y = MIN (y, result.y + result.h); y = MAX (y - result.y, 0); gst_structure_set (structure, "pointer_y", G_TYPE_DOUBLE, (gdouble) y * yscale, NULL); } gst_pad_send_event (peer, event); gst_object_unref (peer); } static void gst_osx_video_sink_navigation_init (GstNavigationInterface * iface) { iface->send_event = gst_osx_video_sink_navigation_send_event; } static void gst_osx_video_sink_set_window_handle (GstVideoOverlay * overlay, guintptr handle_id) { GstOSXVideoSink *osxvideosink = GST_OSX_VIDEO_SINK (overlay); NSView *view = (NSView *) handle_id; gst_osx_video_sink_call_from_main_thread(osxvideosink, osxvideosink->osxvideosinkobject, @selector(setView:), view, YES); } static void gst_osx_video_sink_xoverlay_init (GstVideoOverlayInterface * iface) { iface->set_window_handle = gst_osx_video_sink_set_window_handle; iface->expose = NULL; iface->handle_events = NULL; } /* ============================================================= */ /* */ /* Public Methods */ /* */ /* ============================================================= */ /* =========================================== */ /* */ /* Object typing & Creation */ /* */ /* =========================================== */ GType gst_osx_video_sink_get_type (void) { static GType osxvideosink_type = 0; if (!osxvideosink_type) { static const GTypeInfo osxvideosink_info = { sizeof (GstOSXVideoSinkClass), gst_osx_video_sink_base_init, NULL, (GClassInitFunc) gst_osx_video_sink_class_init, NULL, NULL, sizeof (GstOSXVideoSink), 0, (GInstanceInitFunc) gst_osx_video_sink_init, }; static const GInterfaceInfo overlay_info = { (GInterfaceInitFunc) gst_osx_video_sink_xoverlay_init, NULL, NULL, }; static const GInterfaceInfo navigation_info = { (GInterfaceInitFunc) gst_osx_video_sink_navigation_init, NULL, NULL, }; osxvideosink_type = g_type_register_static (GST_TYPE_VIDEO_SINK, "GstOSXVideoSink", &osxvideosink_info, 0); g_type_add_interface_static (osxvideosink_type, GST_TYPE_VIDEO_OVERLAY, &overlay_info); g_type_add_interface_static (osxvideosink_type, GST_TYPE_NAVIGATION, &navigation_info); } return osxvideosink_type; } @implementation GstWindowDelegate - (id) initWithSink: (GstOSXVideoSink *) sink { self = [super init]; self->osxvideosink = sink; return self; } - (void)windowWillClose:(NSNotification *)notification { /* Only handle close events if the window was closed manually by the user * and not becuase of a state change state to READY */ if (osxvideosink->osxwindow == NULL) { return; } if (!osxvideosink->osxwindow->closed) { osxvideosink->osxwindow->closed = TRUE; GST_ELEMENT_ERROR (osxvideosink, RESOURCE, NOT_FOUND, ("Output window was closed"), (NULL)); gst_osx_video_sink_osxwindow_destroy(osxvideosink); } } @end @ implementation GstOSXVideoSinkObject -(id) initWithSink: (GstOSXVideoSink*) sink { self = [super init]; self->osxvideosink = gst_object_ref (sink); return self; } -(void) dealloc { gst_object_unref (osxvideosink); [super dealloc]; } -(void) createInternalWindow { GstOSXWindow *osxwindow = osxvideosink->osxwindow; NSRect rect; unsigned int mask; osxwindow->internal = TRUE; mask = NSTitledWindowMask | NSClosableWindowMask | NSResizableWindowMask | NSTexturedBackgroundWindowMask | NSMiniaturizableWindowMask; rect.origin.x = 100.0; rect.origin.y = 100.0; rect.size.width = (float) osxwindow->width; rect.size.height = (float) osxwindow->height; osxwindow->win =[[[GstOSXVideoSinkWindow alloc] initWithContentNSRect: rect styleMask: mask backing: NSBackingStoreBuffered defer: NO screen: nil] retain]; GST_DEBUG("VideoSinkWindow created, %p", osxwindow->win); [osxwindow->win orderFrontRegardless]; osxwindow->gstview =[osxwindow->win gstView]; [osxwindow->win setDelegate:[[GstWindowDelegate alloc] initWithSink:osxvideosink]]; } + (BOOL) isMainThread { /* FIXME: ideally we should return YES only for ->ns_app_thread here */ return YES; } - (void) setView: (NSView*)view { NSAutoreleasePool *pool = [[NSAutoreleasePool alloc] init]; if (osxvideosink->superview) { GST_INFO_OBJECT (osxvideosink, "old xwindow id %p", osxvideosink->superview); if (osxvideosink->osxwindow) { [osxvideosink->osxwindow->gstview removeFromSuperview]; } [osxvideosink->superview release]; } if (osxvideosink->osxwindow != NULL && view != NULL) { if (osxvideosink->osxwindow->internal) { GST_INFO_OBJECT (osxvideosink, "closing internal window"); osxvideosink->osxwindow->closed = TRUE; [osxvideosink->osxwindow->win close]; [osxvideosink->osxwindow->win release]; } } GST_INFO_OBJECT (osxvideosink, "set xwindow id %p", view); osxvideosink->superview = [view retain]; if (osxvideosink->osxwindow) { [osxvideosink->osxwindow->gstview addToSuperview: osxvideosink->superview]; if (view) { osxvideosink->osxwindow->internal = FALSE; } } [pool release]; } - (void) resize { GstOSXWindow *osxwindow = osxvideosink->osxwindow; NSAutoreleasePool *pool = [[NSAutoreleasePool alloc] init]; GST_INFO_OBJECT (osxvideosink, "resizing"); NSSize size = {osxwindow->width, osxwindow->height}; if (osxwindow->internal) { [osxwindow->win setContentSize:size]; } if (osxwindow->gstview) { [osxwindow->gstview setVideoSize :(int)osxwindow->width :(int)osxwindow->height]; } GST_INFO_OBJECT (osxvideosink, "done"); [pool release]; } - (void) showFrame: (GstBufferObject *) object { GstVideoFrame frame; guint8 *data, *readp, *writep; gint i, active_width, stride; guint8 *texture_buffer; NSAutoreleasePool *pool = [[NSAutoreleasePool alloc] init]; GstBuffer *buf = object->buf; GST_OBJECT_LOCK (osxvideosink); if (osxvideosink->osxwindow == NULL) goto no_window; texture_buffer = (guint8 *) [osxvideosink->osxwindow->gstview getTextureBuffer]; if (G_UNLIKELY (texture_buffer == NULL)) goto no_texture_buffer; if (!gst_video_frame_map (&frame, &osxvideosink->info, buf, GST_MAP_READ)) goto no_map; data = readp = GST_VIDEO_FRAME_PLANE_DATA (&frame, 0); stride = GST_VIDEO_FRAME_PLANE_STRIDE (&frame, 0); writep = texture_buffer; active_width = GST_VIDEO_SINK_WIDTH (osxvideosink) * sizeof (short); for (i = 0; i < GST_VIDEO_SINK_HEIGHT (osxvideosink); i++) { memcpy (writep, readp, active_width); writep += active_width; readp += stride; } [osxvideosink->osxwindow->gstview displayTexture]; gst_video_frame_unmap (&frame); out: GST_OBJECT_UNLOCK (osxvideosink); [object release]; [pool release]; return; no_map: GST_WARNING_OBJECT (osxvideosink, "couldn't map frame"); goto out; no_window: GST_WARNING_OBJECT (osxvideosink, "not showing frame since we have no window (!?)"); goto out; no_texture_buffer: GST_ELEMENT_ERROR (osxvideosink, RESOURCE, WRITE, (NULL), ("the texture buffer is NULL")); goto out; } -(void) destroy { NSAutoreleasePool *pool; GstOSXWindow *osxwindow; pool = [[NSAutoreleasePool alloc] init]; osxwindow = osxvideosink->osxwindow; osxvideosink->osxwindow = NULL; if (osxwindow) { if (osxvideosink->superview) { [osxwindow->gstview removeFromSuperview]; } [osxwindow->gstview release]; if (osxwindow->internal) { if (!osxwindow->closed) { osxwindow->closed = TRUE; [osxwindow->win close]; [osxwindow->win release]; } } g_free (osxwindow); } [pool release]; } -(void) nsAppThread { NSAutoreleasePool *pool; /* set the main runloop as the runloop for the current thread. This has the * effect that calling NSApp nextEventMatchingMask:untilDate:inMode:dequeue * runs the main runloop. */ _CFRunLoopSetCurrent(CFRunLoopGetMain()); /* this is needed to make IsMainThread checks in core foundation work from the * current thread */ _CFMainPThread = pthread_self(); pool = [[NSAutoreleasePool alloc] init]; [NSApplication sharedApplication]; [NSApp finishLaunching]; g_mutex_lock (&_run_loop_mutex); g_cond_signal (&_run_loop_cond); g_mutex_unlock (&_run_loop_mutex); /* run the loop */ run_ns_app_loop (); [pool release]; } -(void) checkMainRunLoop { g_mutex_lock (&_run_loop_mutex); g_cond_signal (&_run_loop_cond); g_mutex_unlock (&_run_loop_mutex); } @end @ implementation GstBufferObject -(id) initWithBuffer: (GstBuffer*) buffer { self = [super init]; gst_buffer_ref(buffer); self->buf = buffer; return self; } -(void) dealloc{ gst_buffer_unref(buf); [super dealloc]; } @end static gboolean plugin_init (GstPlugin * plugin) { if (!gst_element_register (plugin, "osxvideosink", GST_RANK_MARGINAL, GST_TYPE_OSX_VIDEO_SINK)) return FALSE; GST_DEBUG_CATEGORY_INIT (gst_debug_osx_video_sink, "osxvideosink", 0, "osxvideosink element"); return TRUE; } GST_PLUGIN_DEFINE (GST_VERSION_MAJOR, GST_VERSION_MINOR, osxvideo, "OSX native video output plugin", plugin_init, VERSION, GST_LICENSE, GST_PACKAGE_NAME, GST_PACKAGE_ORIGIN)