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 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., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, 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
*
* <refsect2>
* <para>
* The OSXVideoSink renders video frames to a MacOSX window. The video output
* can be directed to a window embedded in an existing NSApp. This can be done
* by setting the "embed" property to #TRUE. 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. If no embedding is requested, the plugin will
* create a standalone window.
* </para>
* <title>Examples</title>
* <para>
* Simple timeline to test the sink :
* <programlisting>
* gst-launch-0.10 -v videotestsrc ! osxvideosink
* </programlisting>
* </para>
* </refsect2>
*/
#include "config.h"
/* Object header */
#include "osxvideosink.h"
#include <unistd.h>
#import "cocoawindow.h"
/* Debugging category */
GST_DEBUG_CATEGORY (gst_debug_osx_video_sink);
#define GST_CAT_DEFAULT gst_debug_osx_video_sink
/* ElementFactory information */
static const GstElementDetails gst_osx_video_sink_details =
GST_ELEMENT_DETAILS ("OSX Video sink",
"Sink/Video",
"OSX native videosink",
"Zaheer Abbas Merali <zaheerabbas at merali dot org>");
/* Default template - initiated with class struct to allow gst-register to work
without X running */
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-yuv, "
"framerate = (fraction) [ 0, MAX ], "
"width = (int) [ 1, MAX ], "
"height = (int) [ 1, MAX ], "
#if G_BYTE_ORDER == G_BIG_ENDIAN
"format = (fourcc) YUY2")
#else
"format = (fourcc) UYVY")
#endif
);
// much of the following cocoa NSApp code comes from libsdl and libcaca
@implementation NSApplication(Gst)
- (void)setRunning
{
_running = 1;
}
@end
@implementation GstAppDelegate : NSObject
- (NSApplicationTerminateReply)applicationShouldTerminate:(NSApplication *)sender
{
// destroy stuff here!
GST_DEBUG("Kill me please!");
return NSTerminateNow;
}
@end
enum
{
ARG_0,
ARG_EMBED,
ARG_FULLSCREEN
/* FILL ME */
};
static GstVideoSinkClass *parent_class = NULL;
/* cocoa event loop - needed if not run in own app */
gint
cocoa_event_loop (GstOSXVideoSink * vsink)
{
NSAutoreleasePool *pool;
gboolean ret = TRUE;
GST_DEBUG_OBJECT (vsink, "Entering event loop");
pool = [[NSAutoreleasePool alloc] init];
if ([NSApp isRunning]) {
NSEvent *event = [NSApp nextEventMatchingMask:NSAnyEventMask
untilDate:[NSDate distantPast]
inMode:NSDefaultRunLoopMode dequeue:YES ];
if ( event != nil ) {
switch ([event type]) {
default: //XXX Feed me please
[NSApp sendEvent:event];
break;
}
}
}
[pool release];
GST_DEBUG_OBJECT (vsink, "Leaving event loop with ret : %d", ret);
return ret;
}
static NSString *
GetApplicationName(void)
{
NSDictionary *dict;
NSString *appName = 0;
/* Determine the application name */
dict = (NSDictionary *)CFBundleGetInfoDictionary(CFBundleGetMainBundle());
if (dict)
appName = [dict objectForKey: @"CFBundleName"];
if (![appName length])
appName = [[NSProcessInfo processInfo] processName];
return appName;
}
static void
CreateApplicationMenus(void)
{
NSString *appName;
NSString *title;
NSMenu *appleMenu;
NSMenu *windowMenu;
NSMenuItem *menuItem;
/* Create the main menu bar */
[NSApp setMainMenu:[[NSMenu alloc] init]];
/* Create the application menu */
appName = GetApplicationName();
appleMenu = [[NSMenu alloc] initWithTitle:@""];
/* Add menu items */
title = [@"About " stringByAppendingString:appName];
[appleMenu addItemWithTitle:title action:@selector(orderFrontStandardAboutPanel:) keyEquivalent:@""];
[appleMenu addItem:[NSMenuItem separatorItem]];
title = [@"Hide " stringByAppendingString:appName];
[appleMenu addItemWithTitle:title action:@selector(hide:) keyEquivalent:@/*"h"*/""];
menuItem = (NSMenuItem *)[appleMenu addItemWithTitle:@"Hide Others" action:@selector(hideOtherApplications:) keyEquivalent:@/*"h"*/""];
[menuItem setKeyEquivalentModifierMask:(NSAlternateKeyMask|NSCommandKeyMask)];
[appleMenu addItemWithTitle:@"Show All" action:@selector(unhideAllApplications:) keyEquivalent:@""];
[appleMenu addItem:[NSMenuItem separatorItem]];
title = [@"Quit " stringByAppendingString:appName];
[appleMenu addItemWithTitle:title action:@selector(terminate:) keyEquivalent:@/*"q"*/""];
/* Put menu into the menubar */
menuItem = [[NSMenuItem alloc] initWithTitle:@"" action:nil keyEquivalent:@""];
[menuItem setSubmenu:appleMenu];
[[NSApp mainMenu] addItem:menuItem];
[menuItem release];
/* Tell the application object that this is now the application menu */
[NSApp setAppleMenu:appleMenu];
[appleMenu release];
/* Create the window menu */
windowMenu = [[NSMenu alloc] initWithTitle:@"Window"];
/* "Minimize" item */
menuItem = [[NSMenuItem alloc] initWithTitle:@"Minimize" action:@selector(performMiniaturize:) keyEquivalent:@/*"m"*/""];
[windowMenu addItem:menuItem];
[menuItem release];
/* Put menu into the menubar */
menuItem = [[NSMenuItem alloc] initWithTitle:@"Window" action:nil keyEquivalent:@""];
[menuItem setSubmenu:windowMenu];
[[NSApp mainMenu] addItem:menuItem];
[menuItem release];
/* Tell the application object that this is now the window menu */
[NSApp setWindowsMenu:windowMenu];
[windowMenu release];
}
/* This function handles osx window creation */
static GstOSXWindow *
gst_osx_video_sink_osxwindow_new (GstOSXVideoSink * osxvideosink, gint width,
gint height)
{
NSRect rect;
GstOSXWindow *osxwindow = NULL;
g_return_val_if_fail (GST_IS_OSX_VIDEO_SINK (osxvideosink), NULL);
osxwindow = g_new0 (GstOSXWindow, 1);
osxwindow->width = width;
osxwindow->height = height;
osxwindow->internal = TRUE;
osxwindow->pool = [[NSAutoreleasePool alloc] init];
if (osxvideosink->embed == FALSE) {
ProcessSerialNumber psn;
unsigned int 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;
if (!GetCurrentProcess(&psn)) {
TransformProcessType(&psn, kProcessTransformToForegroundApplication);
SetFrontProcess(&psn);
}
[NSApplication sharedApplication];
osxwindow->win =[[GstOSXVideoSinkWindow alloc]
initWithContentRect: rect
styleMask: mask
backing: NSBackingStoreBuffered
defer: NO
screen: nil];
[osxwindow->win autorelease];
[NSApplication sharedApplication];
[osxwindow->win makeKeyAndOrderFront:NSApp];
osxwindow->gstview =[osxwindow->win gstView];
[osxwindow->gstview autorelease];
if (osxvideosink->fullscreen)
[osxwindow->gstview setFullScreen:YES];
CreateApplicationMenus();
[NSApp finishLaunching];
[NSApp setDelegate:[[GstAppDelegate alloc] init]];
[NSApp setRunning];
// insert event dispatch in the glib main loop
g_idle_add ((GSourceFunc) cocoa_event_loop, osxvideosink);
} else {
GstStructure *s;
GstMessage *msg;
gchar * tmp;
/* Needs to be embedded */
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];
[osxwindow->gstview autorelease];
s = gst_structure_new ("have-ns-view",
"nsview", G_TYPE_POINTER, osxwindow->gstview,
nil);
tmp = gst_structure_to_string (s);
GST_DEBUG_OBJECT (osxvideosink, "Sending message %s",
tmp);
g_free (tmp);
msg = gst_message_new_element (GST_OBJECT (osxvideosink), s);
gst_element_post_message (GST_ELEMENT (osxvideosink), msg);
GST_LOG_OBJECT (osxvideosink, "'have-ns-view' message sent");
}
return osxwindow;
}
/* This function destroys a GstXWindow */
static void
gst_osx_video_sink_osxwindow_destroy (GstOSXVideoSink * osxvideosink,
GstOSXWindow * osxwindow)
{
g_return_if_fail (osxwindow != NULL);
g_return_if_fail (GST_IS_OSX_VIDEO_SINK (osxvideosink));
[osxwindow->pool release];
g_free (osxwindow);
}
/* This function resizes a GstXWindow */
static void
gst_osx_video_sink_osxwindow_resize (GstOSXVideoSink * osxvideosink,
GstOSXWindow * osxwindow, guint width, guint height)
{
NSSize size;
NSAutoreleasePool *subPool = [[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;
size.width = width;
size.height = height;
/* Call relevant cocoa function to resize window */
[osxwindow->win setContentSize:size];
[subPool release];
}
static void
gst_osx_video_sink_osxwindow_clear (GstOSXVideoSink * osxvideosink,
GstOSXWindow * osxwindow)
{
g_return_if_fail (osxwindow != NULL);
g_return_if_fail (GST_IS_OSX_VIDEO_SINK (osxvideosink));
}
/* Element stuff */
static gboolean
gst_osx_video_sink_setcaps (GstBaseSink * bsink, GstCaps * caps)
{
GstOSXVideoSink *osxvideosink;
GstStructure *structure;
gboolean res, result = FALSE;
gint video_width, video_height;
const GValue *framerate;
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);
framerate = gst_structure_get_value (structure, "framerate");
res &= (framerate != NULL);
if (!res) {
goto beach;
}
osxvideosink->fps_n = gst_value_get_fraction_numerator (framerate);
osxvideosink->fps_d = gst_value_get_fraction_denominator (framerate);
GST_DEBUG_OBJECT (osxvideosink, "our format is: %dx%d video at %d/%d fps",
video_width, video_height, osxvideosink->fps_n, osxvideosink->fps_d);
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;
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:
/* Creating our window and our image */
if (!osxvideosink->osxwindow) {
GST_VIDEO_SINK_WIDTH (osxvideosink) = 320;
GST_VIDEO_SINK_HEIGHT (osxvideosink) = 240;
osxvideosink->osxwindow =
gst_osx_video_sink_osxwindow_new (osxvideosink,
GST_VIDEO_SINK_WIDTH (osxvideosink),
GST_VIDEO_SINK_HEIGHT (osxvideosink));
gst_osx_video_sink_osxwindow_clear (osxvideosink,
osxvideosink->osxwindow);
} else {
if (osxvideosink->osxwindow->internal)
gst_osx_video_sink_osxwindow_resize (osxvideosink,
osxvideosink->osxwindow, GST_VIDEO_SINK_WIDTH (osxvideosink),
GST_VIDEO_SINK_HEIGHT (osxvideosink));
}
break;
case GST_STATE_CHANGE_READY_TO_PAUSED:
GST_DEBUG ("ready to paused");
if (osxvideosink->osxwindow)
gst_osx_video_sink_osxwindow_clear (osxvideosink,
osxvideosink->osxwindow);
osxvideosink->time = 0;
break;
case GST_STATE_CHANGE_PAUSED_TO_PLAYING:
break;
case GST_STATE_CHANGE_PLAYING_TO_PAUSED:
break;
case GST_STATE_CHANGE_PAUSED_TO_READY:
osxvideosink->fps_n = 0;
osxvideosink->fps_d = 0;
osxvideosink->sw_scaling_failed = FALSE;
GST_VIDEO_SINK_WIDTH (osxvideosink) = 0;
GST_VIDEO_SINK_HEIGHT (osxvideosink) = 0;
break;
case GST_STATE_CHANGE_READY_TO_NULL:
if (osxvideosink->osxwindow) {
gst_osx_video_sink_osxwindow_destroy (osxvideosink,
osxvideosink->osxwindow);
osxvideosink->osxwindow = NULL;
}
break;
}
return (GST_ELEMENT_CLASS (parent_class))->change_state (element, transition);
}
static GstFlowReturn
gst_osx_video_sink_show_frame (GstBaseSink * bsink, GstBuffer * buf)
{
GstOSXVideoSink *osxvideosink;
osxvideosink = GST_OSX_VIDEO_SINK (bsink);
char *viewdata =[osxvideosink->osxwindow->gstview getTextureBuffer];
GST_DEBUG ("show_frame");
memcpy (viewdata, GST_BUFFER_DATA (buf), GST_BUFFER_SIZE (buf));
[osxvideosink->osxwindow->gstview displayTexture];
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);
break;
case ARG_FULLSCREEN:
osxvideosink->fullscreen = g_value_get_boolean (value);
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_FULLSCREEN:
g_value_set_boolean (value, osxvideosink->fullscreen);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static void
gst_osx_video_sink_init (GstOSXVideoSink * osxvideosink)
{
osxvideosink->osxwindow = NULL;
osxvideosink->fps_n = 0;
osxvideosink->fps_d = 0;
osxvideosink->pixel_width = osxvideosink->pixel_height = 1;
osxvideosink->sw_scaling_failed = FALSE;
osxvideosink->embed = FALSE;
osxvideosink->fullscreen = FALSE;
}
static void
gst_osx_video_sink_base_init (gpointer g_class)
{
GstElementClass *element_class = GST_ELEMENT_CLASS (g_class);
gst_element_class_set_details (element_class, &gst_osx_video_sink_details);
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_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);
gobject_class->set_property = gst_osx_video_sink_set_property;
gobject_class->get_property = gst_osx_video_sink_get_property;
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", "When enabled, it "
"can be embedded", FALSE, G_PARAM_READWRITE));
/**
* GstOSXVideoSink:fullscreen
*
* Set to #TRUE to have the video displayed in fullscreen.
**/
g_object_class_install_property (gobject_class, ARG_FULLSCREEN,
g_param_spec_boolean ("fullscreen", "fullscreen",
"When enabled, the view " "is fullscreen", FALSE,
G_PARAM_READWRITE));
}
/* ============================================================= */
/* */
/* 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,
};
osxvideosink_type = g_type_register_static (GST_TYPE_VIDEO_SINK,
"GstOSXVideoSink", &osxvideosink_info, 0);
}
return osxvideosink_type;
}
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)