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Adding GstVideoOverlay interface.

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Original commit message from CVS:
Adding GstVideoOverlay interface.
This commit is contained in:
Julien Moutte 2003-11-15 15:02:49 +00:00
parent 82ae9c504e
commit a7c2690ff8
3 changed files with 261 additions and 0 deletions
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10
gst-libs/gst/videooverlay/Makefile.am Normal file
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libgstinterfacesincludedir = \
$(includedir)/gstreamer-@GST_MAJORMINOR@/gst/videooverlay
libgstinterfacesinclude_HEADERS = gstvideooverlay.h
noinst_LTLIBRARIES = libgstvideooverlay.la
libgstvideooverlay_la_SOURCES = gstvideooverlay.c
libgstvideooverlay_la_CFLAGS = $(GST_CFLAGS) $(GST_OPT_CFLAGS)

162
gst-libs/gst/videooverlay/gstvideooverlay.c Normal file
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/*
* GStreamer Video Overlay interface.
*
* Copyright (C) <2003> Julien Moutte <julien@moutte.net>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program 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 General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "gstvideooverlay.h"
/* VideoSink signals and args */
enum {
HAVE_VIDEO_OVERLAY,
HAVE_SIZE,
LAST_SIGNAL
};
static guint gst_video_overlay_signals[LAST_SIGNAL] = { 0 };
/* Initing stuff */
static void
gst_video_overlay_base_init (gpointer g_class)
{
static gboolean initialized = FALSE;
if (! initialized)
{
gst_video_overlay_signals[HAVE_SIZE] =
g_signal_new ("have_size",
GST_TYPE_VIDEO_OVERLAY, G_SIGNAL_RUN_LAST,
G_STRUCT_OFFSET (GstVideoOverlayInterface, have_size),
NULL, NULL,
gst_marshal_VOID__INT_INT, G_TYPE_NONE, 2,
G_TYPE_UINT, G_TYPE_UINT);
gst_video_overlay_signals[HAVE_VIDEO_OVERLAY] =
g_signal_new ("have_video_overlay",
GST_TYPE_VIDEO_OVERLAY, G_SIGNAL_RUN_LAST,
G_STRUCT_OFFSET (GstVideoOverlayInterface, have_video_overlay),
NULL, NULL,
g_cclosure_marshal_VOID__POINTER, G_TYPE_NONE, 1,
G_TYPE_POINTER);
initialized = TRUE;
}
}
/* Public virtual methods */
/**
* gst_video_overlay_set_video_overlay:
* @overlay: a #GstVideoOverlay to set the video overlay on.
* @video_out: the #gpointer linking to video overlay.
*
* This will call the video overlay's set_video_overlay method. You should
* use this method to tell to a video overlay to display video output to a
* specific video overlay resource.
*/
void
gst_video_overlay_set_video_overlay (GstVideoOverlay *overlay,
GstVideoOverlayResource *resource)
{
GstVideoOverlayInterface *interface;
g_return_if_fail (overlay != NULL);
g_return_if_fail (GST_IS_VIDEO_OVERLAY (overlay));
interface = GST_VIDEO_OVERLAY_GET_INTERFACE (overlay);
if (interface->set_video_out)
interface->set_video_out (overlay, resource);
}
/* Public methods */
/**
* gst_video_overlay_got_video_overlay:
* @overlay: a #GstVideoOverlay which got a video overlay resource.
* @video_out: a #gpointer linking to the video overlay ressource.
*
* This will fire an have_video_out signal.
*
* This function should be used by video overlay developpers.
*/
void
gst_video_overlay_got_video_overlay (GstVideoOverlay *overlay,
GstVideoOverlayResource *resource)
{
g_return_if_fail (overlay != NULL);
g_return_if_fail (GST_IS_VIDEO_OVERLAY (overlay));
g_signal_emit (G_OBJECT (overlay),
gst_video_overlay_signals[HAVE_VIDEO_OVERLAY], 0, resource);
}
/**
* gst_video_overlay_got_video_size:
* @overlay: a #GstVideoOverlay which received video geometry.
* @width: a width as a #gint.
* @height: a height as a #gint.
*
* This will fire an have_size signal.
*
* This function should be used by video overlay developpers.
*/
void
gst_video_overlay_got_video_size (GstVideoOverlay *overlay,
gint width, gint height)
{
g_return_if_fail (overlay != NULL);
g_return_if_fail (GST_IS_VIDEO_OVERLAY (overlay));
g_signal_emit (G_OBJECT (overlay), gst_video_overlay_signals[HAVE_SIZE],
0, width, height);
}
GType
gst_video_overlay_get_type (void)
{
static GType overlay_type = 0;
if (!overlay_type)
{
static const GTypeInfo overlay_info = {
sizeof (GstVideoOverlayInterface), /* class_size */
gst_video_overlay_base_init, /* base_init */
NULL,
NULL,
NULL,
NULL,
0,
0,
NULL
};
overlay_type = g_type_register_static (G_TYPE_INTERFACE,
"GstVideoOverlay",
&overlay_info, 0);
g_type_interface_add_prerequisite (overlay_type,
GST_TYPE_INTERFACE);
}
return overlay_type;
}

89
gst-libs/gst/videooverlay/gstvideooverlay.h Normal file
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/*
* GStreamer Video Overlay interface.
*
* Copyright (C) <2003> Julien Moutte <julien@moutte.net>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program 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 General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
#ifndef __GST_VIDEO_OVERLAY_H__
#define __GST_VIDEO_OVERLAY_H__
#include <gst/gst.h>
G_BEGIN_DECLS
#define GST_TYPE_VIDEO_OVERLAY (gst_video_overlay_get_type ())
#define GST_VIDEO_OVERLAY(obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), GST_TYPE_VIDEO_OVERLAY, GstVideoOverlay))
#define GST_IS_VIDEO_OVERLAY(obj) (G_TYPE_CHECK_INSTANCE_TYPE ((obj), GST_TYPE_VIDEO_OVERLAY))
#define GST_VIDEO_OVERLAY_GET_INTERFACE(obj) (G_TYPE_INSTANCE_GET_INTERFACE ((obj), GST_TYPE_VIDEO_OVERLAY, GstVideoOverlayInterface))
typedef struct _GstVideoOverlay GstVideoOverlay;
typedef struct _GstVideoOverlayInterface GstVideoOverlayInterface;
typedef struct _GstVideoOverlayResource GstVideoOverlayResource;
typedef enum {
GST_VIDEO_OVERLAY_RESOURCE_TYPE_XID,
GST_VIDEO_OVERLAY_RESOURCE_TYPE_DIRECTFB
} GstVideoOverlayResourceType;
struct _GstVideoOverlayResource
{
GstVideoOverlayResourceType resource_type;
union
{
struct
{
guint32 xid;
} x_resource;
struct
{
gpointer display_layer;
gpointer window;
} dfb_resource;
} resource_data;
};
struct _GstVideoOverlay;
struct GstVideoOverlayInterface {
GTypeInterface parent_class;
/* public virtual methods */
void (*set_video_overlay) (GstVideoOverlay *overlay,
GstVideoOverlayResource *resource);
/* signals */
void (*have_video_overlay) (GstVideoOverlay *overlay,
GstVideoOverlayResource *resource);
void (*have_size) (GstVideoOverlay *overlay, gint width, gint height);
};
GType gst_video_overlay_get_type (void);
/* public virtual methods */
void gst_video_overlay_set_video_overlay (GstVideoOverlay *overlay,
GstVideoOverlayResource *resource);
/* public methods to fire signals */
void gst_video_overlay_got_video_overlay (GstVideoOverlay *overlay,
GstVideoOverlayResource *resource);
void gst_video_overlay_got_video_size (GstVideoOverlay *overlay,
gint width, gint height);
G_END_DECLS
#endif /* __GST_VIDEO_OVERLAY_H__ */