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gstreamer/sys/osxvideo/osxvideosink.m

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/* GStreamer
* OSX video sink
* Copyright (C) 2004-6 Zaheer Abbas Merali <zaheerabbas at merali dot org>
* Copyright (C) 2007,2008,2009 Pioneers of the Inevitable <songbird@songbirdnest.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.
*
* 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 <gst/video/videooverlay.h>
#include <gst/video/navigation.h>
#include "osxvideosink.h"
#include <unistd.h>
#import "cocoawindow.h"
GST_DEBUG_CATEGORY (gst_debug_osx_video_sink);
#define GST_CAT_DEFAULT gst_debug_osx_video_sink
#ifdef RUN_NS_APP_THREAD
#include <pthread.h>
extern void _CFRunLoopSetCurrent(CFRunLoopRef rl);
extern pthread_t _CFMainPThread;
#endif
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;
#ifdef RUN_NS_APP_THREAD
/* when running the loop in a thread we want to sleep as long as possible */
pollTime = [NSDate distantFuture];
#else
pollTime = [NSDate distantPast];
#endif
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) {
#ifdef RUN_NS_APP_THREAD
/* 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);
#else
/* assume that there is a GMainLoop and iterate the main runloop from there
*/
sink_class->cocoa_timeout = g_timeout_add (10,
(GSourceFunc) run_ns_app_loop, NULL);
#endif
}
g_mutex_unlock (&_run_loop_check_mutex);
}
static void
gst_osx_video_sink_stop_cocoa_loop (GstOSXVideoSink * osxvideosink)
{
#ifndef RUN_NS_APP_THREAD
if (sink_class->cocoa_timeout)
g_source_remove(sink_klass->cocoa_timeout);
#endif
}
/* 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_osx_video_sink_call_from_main_thread(osxvideosink,
osxvideosink->osxvideosinkobject,
@selector(destroy), (id) nil, YES);
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);
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 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 <zaheerabbas at merali dot org>");
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;
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 = sink;
return self;
}
-(void) createInternalWindow
{
GstOSXWindow *osxwindow = osxvideosink->osxwindow;
ProcessSerialNumber psn;
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;
#ifndef RUN_NS_APP_THREAD
if (!osxvideosink->app_started) {
[NSApplication sharedApplication];
[NSApp finishLaunching];
osxvideosink->app_started = TRUE;
}
#endif
if (!GetCurrentProcess(&psn)) {
TransformProcessType(&psn, kProcessTransformToForegroundApplication);
SetFrontProcess(&psn);
}
osxwindow->win =[[[GstOSXVideoSinkWindow alloc]
initWithContentNSRect: rect
styleMask: mask
backing: NSBackingStoreBuffered
defer: NO
screen: nil] retain];
GST_DEBUG("VideoSinkWindow created, %p", osxwindow->win);
[osxwindow->win makeKeyAndOrderFront:NSApp];
osxwindow->gstview =[osxwindow->win gstView];
[osxwindow->win setDelegate:[[GstWindowDelegate alloc]
initWithSink:osxvideosink]];
}
#ifdef RUN_NS_APP_THREAD
+ (BOOL) isMainThread
{
/* FIXME: ideally we should return YES only for ->ns_app_thread here */
return YES;
}
#endif
- (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
{
GstMapInfo info;
guint8 *viewdata;
NSAutoreleasePool *pool = [[NSAutoreleasePool alloc] init];
GstBuffer *buf = object->buf;
if (osxvideosink->osxwindow != NULL)
{
gst_buffer_map (buf, &info, GST_MAP_READ);
viewdata = (guint8 *) [osxvideosink->osxwindow->gstview getTextureBuffer];
if (G_UNLIKELY (viewdata == NULL)) {
GST_ELEMENT_ERROR (osxvideosink, RESOURCE, WRITE,
("Could not get a texture buffer"), (NULL));
} else {
memcpy (viewdata, info.data, info.size);
[osxvideosink->osxwindow->gstview displayTexture];
gst_buffer_unmap (buf, &info);
}
}
[object release];
[pool release];
}
-(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];
}
#ifdef RUN_NS_APP_THREAD
-(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];
}
#endif
-(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_PRIMARY, 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)
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