/* 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., 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 * * 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 "osxvideosink.h" #include #import "cocoawindow.h" GST_DEBUG_CATEGORY (gst_debug_osx_video_sink); #define GST_CAT_DEFAULT gst_debug_osx_video_sink static const GstElementDetails gst_osx_video_sink_details = GST_ELEMENT_DETAILS ("OSX Video sink", "Sink/Video", "OSX native videosink", "Zaheer Abbas Merali "); 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 ); enum { ARG_0, ARG_EMBED }; static GstVideoSinkClass *parent_class = NULL; /* 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; GstStructure *s; GstMessage *msg; NSAutoreleasePool *pool = [[NSAutoreleasePool alloc] init]; g_return_val_if_fail (GST_IS_OSX_VIDEO_SINK (osxvideosink), NULL); GST_DEBUG_OBJECT (osxvideosink, "Creating new OSX window"); osxwindow = g_new0 (GstOSXWindow, 1); osxwindow->width = width; osxwindow->height = height; /* 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_LOG_OBJECT (osxvideosink, "'have-ns-view' message sent"); [pool release]; return osxwindow; } 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]; if (osxvideosink->osxwindow) { [osxvideosink->osxwindow->gstview release]; g_free (osxvideosink->osxwindow); osxvideosink->osxwindow = NULL; } [pool release]; } /* This function resizes a GstXWindow */ static void gst_osx_video_sink_osxwindow_resize (GstOSXVideoSink * osxvideosink, GstOSXWindow * osxwindow, guint width, guint height) { 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); [osxwindow->gstview setVideoSize:width :height]; [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: /* Creating our window and our image */ 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)); 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; break; case GST_STATE_CHANGE_READY_TO_NULL: gst_osx_video_sink_osxwindow_destroy (osxvideosink); break; default: break; } return ret; } static GstFlowReturn gst_osx_video_sink_show_frame (GstBaseSink * bsink, GstBuffer * buf) { GstOSXVideoSink *osxvideosink; guint8 *viewdata; NSAutoreleasePool *pool = [[NSAutoreleasePool alloc] init]; osxvideosink = GST_OSX_VIDEO_SINK (bsink); viewdata = (guint8 *) [osxvideosink->osxwindow->gstview getTextureBuffer]; GST_DEBUG ("show_frame"); memcpy (viewdata, GST_BUFFER_DATA (buf), GST_BUFFER_SIZE (buf)); [osxvideosink->osxwindow->gstview displayTexture]; [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: /* Ignore, just here for backwards compatibility */ 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, TRUE); 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; } 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", "For ABI compatiblity only, do not use", 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)