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Adding GstVideoOverlay interface.
Original commit message from CVS: Adding GstVideoOverlay interface.
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10
gst-libs/gst/videooverlay/Makefile.am
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10
gst-libs/gst/videooverlay/Makefile.am
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libgstinterfacesincludedir = \
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$(includedir)/gstreamer-@GST_MAJORMINOR@/gst/videooverlay
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libgstinterfacesinclude_HEADERS = gstvideooverlay.h
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noinst_LTLIBRARIES = libgstvideooverlay.la
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libgstvideooverlay_la_SOURCES = gstvideooverlay.c
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libgstvideooverlay_la_CFLAGS = $(GST_CFLAGS) $(GST_OPT_CFLAGS)
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162
gst-libs/gst/videooverlay/gstvideooverlay.c
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gst-libs/gst/videooverlay/gstvideooverlay.c
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/*
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* GStreamer Video Overlay interface.
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*
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* Copyright (C) <2003> Julien Moutte <julien@moutte.net>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Library General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*/
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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#include "gstvideooverlay.h"
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/* VideoSink signals and args */
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enum {
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HAVE_VIDEO_OVERLAY,
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HAVE_SIZE,
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LAST_SIGNAL
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};
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static guint gst_video_overlay_signals[LAST_SIGNAL] = { 0 };
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/* Initing stuff */
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static void
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gst_video_overlay_base_init (gpointer g_class)
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{
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static gboolean initialized = FALSE;
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if (! initialized)
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{
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gst_video_overlay_signals[HAVE_SIZE] =
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g_signal_new ("have_size",
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GST_TYPE_VIDEO_OVERLAY, G_SIGNAL_RUN_LAST,
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G_STRUCT_OFFSET (GstVideoOverlayInterface, have_size),
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NULL, NULL,
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gst_marshal_VOID__INT_INT, G_TYPE_NONE, 2,
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G_TYPE_UINT, G_TYPE_UINT);
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gst_video_overlay_signals[HAVE_VIDEO_OVERLAY] =
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g_signal_new ("have_video_overlay",
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GST_TYPE_VIDEO_OVERLAY, G_SIGNAL_RUN_LAST,
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G_STRUCT_OFFSET (GstVideoOverlayInterface, have_video_overlay),
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NULL, NULL,
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g_cclosure_marshal_VOID__POINTER, G_TYPE_NONE, 1,
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G_TYPE_POINTER);
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initialized = TRUE;
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}
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}
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/* Public virtual methods */
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/**
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* gst_video_overlay_set_video_overlay:
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* @overlay: a #GstVideoOverlay to set the video overlay on.
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* @video_out: the #gpointer linking to video overlay.
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*
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* This will call the video overlay's set_video_overlay method. You should
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* use this method to tell to a video overlay to display video output to a
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* specific video overlay resource.
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*/
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void
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gst_video_overlay_set_video_overlay (GstVideoOverlay *overlay,
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GstVideoOverlayResource *resource)
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{
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GstVideoOverlayInterface *interface;
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g_return_if_fail (overlay != NULL);
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g_return_if_fail (GST_IS_VIDEO_OVERLAY (overlay));
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interface = GST_VIDEO_OVERLAY_GET_INTERFACE (overlay);
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if (interface->set_video_out)
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interface->set_video_out (overlay, resource);
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}
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/* Public methods */
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/**
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* gst_video_overlay_got_video_overlay:
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* @overlay: a #GstVideoOverlay which got a video overlay resource.
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* @video_out: a #gpointer linking to the video overlay ressource.
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*
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* This will fire an have_video_out signal.
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*
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* This function should be used by video overlay developpers.
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*/
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void
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gst_video_overlay_got_video_overlay (GstVideoOverlay *overlay,
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GstVideoOverlayResource *resource)
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{
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g_return_if_fail (overlay != NULL);
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g_return_if_fail (GST_IS_VIDEO_OVERLAY (overlay));
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g_signal_emit (G_OBJECT (overlay),
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gst_video_overlay_signals[HAVE_VIDEO_OVERLAY], 0, resource);
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}
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/**
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* gst_video_overlay_got_video_size:
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* @overlay: a #GstVideoOverlay which received video geometry.
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* @width: a width as a #gint.
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* @height: a height as a #gint.
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*
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* This will fire an have_size signal.
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*
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* This function should be used by video overlay developpers.
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*/
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void
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gst_video_overlay_got_video_size (GstVideoOverlay *overlay,
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gint width, gint height)
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{
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g_return_if_fail (overlay != NULL);
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g_return_if_fail (GST_IS_VIDEO_OVERLAY (overlay));
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g_signal_emit (G_OBJECT (overlay), gst_video_overlay_signals[HAVE_SIZE],
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0, width, height);
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}
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GType
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gst_video_overlay_get_type (void)
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{
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static GType overlay_type = 0;
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if (!overlay_type)
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{
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static const GTypeInfo overlay_info = {
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sizeof (GstVideoOverlayInterface), /* class_size */
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gst_video_overlay_base_init, /* base_init */
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NULL,
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NULL,
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NULL,
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NULL,
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0,
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0,
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NULL
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};
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overlay_type = g_type_register_static (G_TYPE_INTERFACE,
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"GstVideoOverlay",
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&overlay_info, 0);
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g_type_interface_add_prerequisite (overlay_type,
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GST_TYPE_INTERFACE);
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}
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return overlay_type;
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}
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89
gst-libs/gst/videooverlay/gstvideooverlay.h
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89
gst-libs/gst/videooverlay/gstvideooverlay.h
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/*
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* GStreamer Video Overlay interface.
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*
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* Copyright (C) <2003> Julien Moutte <julien@moutte.net>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Library General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*/
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#ifndef __GST_VIDEO_OVERLAY_H__
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#define __GST_VIDEO_OVERLAY_H__
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#include <gst/gst.h>
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G_BEGIN_DECLS
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#define GST_TYPE_VIDEO_OVERLAY (gst_video_overlay_get_type ())
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#define GST_VIDEO_OVERLAY(obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), GST_TYPE_VIDEO_OVERLAY, GstVideoOverlay))
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#define GST_IS_VIDEO_OVERLAY(obj) (G_TYPE_CHECK_INSTANCE_TYPE ((obj), GST_TYPE_VIDEO_OVERLAY))
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#define GST_VIDEO_OVERLAY_GET_INTERFACE(obj) (G_TYPE_INSTANCE_GET_INTERFACE ((obj), GST_TYPE_VIDEO_OVERLAY, GstVideoOverlayInterface))
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typedef struct _GstVideoOverlay GstVideoOverlay;
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typedef struct _GstVideoOverlayInterface GstVideoOverlayInterface;
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typedef struct _GstVideoOverlayResource GstVideoOverlayResource;
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typedef enum {
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GST_VIDEO_OVERLAY_RESOURCE_TYPE_XID,
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GST_VIDEO_OVERLAY_RESOURCE_TYPE_DIRECTFB
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} GstVideoOverlayResourceType;
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struct _GstVideoOverlayResource
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{
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GstVideoOverlayResourceType resource_type;
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union
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{
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struct
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{
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guint32 xid;
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} x_resource;
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struct
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{
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gpointer display_layer;
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gpointer window;
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} dfb_resource;
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} resource_data;
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};
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struct _GstVideoOverlay;
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struct GstVideoOverlayInterface {
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GTypeInterface parent_class;
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/* public virtual methods */
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void (*set_video_overlay) (GstVideoOverlay *overlay,
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GstVideoOverlayResource *resource);
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/* signals */
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void (*have_video_overlay) (GstVideoOverlay *overlay,
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GstVideoOverlayResource *resource);
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void (*have_size) (GstVideoOverlay *overlay, gint width, gint height);
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};
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GType gst_video_overlay_get_type (void);
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/* public virtual methods */
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void gst_video_overlay_set_video_overlay (GstVideoOverlay *overlay,
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GstVideoOverlayResource *resource);
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/* public methods to fire signals */
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void gst_video_overlay_got_video_overlay (GstVideoOverlay *overlay,
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GstVideoOverlayResource *resource);
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void gst_video_overlay_got_video_size (GstVideoOverlay *overlay,
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gint width, gint height);
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G_END_DECLS
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#endif /* __GST_VIDEO_OVERLAY_H__ */
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