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/* GStreamer
* Copyright (C) <2005> Julien Moutte <>
* 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
* 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.
#ifndef __GST_XVCONTEXT_H__
#define __GST_XVCONTEXT_H__
#ifdef HAVE_XSHM
#include <sys/types.h>
#include <sys/ipc.h>
#include <sys/shm.h>
#endif /* HAVE_XSHM */
#include <X11/Xlib.h>
#include <X11/Xutil.h>
#ifdef HAVE_XSHM
#include <X11/extensions/XShm.h>
#endif /* HAVE_XSHM */
#include <X11/extensions/Xv.h>
#include <X11/extensions/Xvlib.h>
#include <string.h>
#include <math.h>
#include <stdlib.h>
#include <gst/video/video.h>
typedef struct _GstXvContextConfig GstXvContextConfig;
typedef struct _GstXvImageFormat GstXvImageFormat;
typedef struct _GstXvContext GstXvContext;
* GstXvContextConfig:
* current configuration of the context
struct _GstXvContextConfig
gchar *display_name;
guint adaptor_nr;
/* port attributes */
gboolean autopaint_colorkey;
gint colorkey;
gboolean double_buffer;
gint brightness;
gint contrast;
gint hue;
gint saturation;
gboolean cb_changed;
* GstXvImageFormat:
* @format: the image format
* @caps: generated #GstCaps for this image format
* Structure storing image format to #GstCaps association.
struct _GstXvImageFormat
gint format;
GstVideoFormat vformat;
GstCaps *caps;
#define GST_TYPE_XVCONTEXT (gst_xvcontext_get_type())
#define GST_XVCONTEXT_CAST(obj) ((GstXvContext *)obj)
* GstXvContext:
* @disp: the X11 Display of this context
* @screen: the default Screen of Display @disp
* @screen_num: the Screen number of @screen
* @visual: the default Visual of Screen @screen
* @root: the root Window of Display @disp
* @white: the value of a white pixel on Screen @screen
* @black: the value of a black pixel on Screen @screen
* @depth: the color depth of Display @disp
* @bpp: the number of bits per pixel on Display @disp
* @endianness: the endianness of image bytes on Display @disp
* @width: the width in pixels of Display @disp
* @height: the height in pixels of Display @disp
* @widthmm: the width in millimeters of Display @disp
* @heightmm: the height in millimeters of Display @disp
* @par: the pixel aspect ratio calculated from @width, @widthmm and @height,
* @heightmm ratio
* @use_xshm: used to known wether of not XShm extension is usable or not even
* if the Extension is present
* @xv_port_id: the XVideo port ID
* @im_format: used to store at least a valid format for XShm calls checks
* @formats_list: list of supported image formats on @xv_port_id
* @channels_list: list of #GstColorBalanceChannels
* @caps: the #GstCaps that Display @disp can accept
* Structure used to store various informations collected/calculated for a
* Display.
struct _GstXvContext
GstMiniObject parent;
GMutex lock;
Display *disp;
Screen *screen;
gint screen_num;
Visual *visual;
Window root;
gulong white, black;
gint depth;
gint bpp;
gint endianness;
gint width, height;
gint widthmm, heightmm;
GValue *par; /* calculated pixel aspect ratio */
gboolean use_xshm;
XvPortID xv_port_id;
guint nb_adaptors;
gchar **adaptors;
guint adaptor_nr;
gint im_format;
/* port features */
gboolean have_autopaint_colorkey;
gboolean have_colorkey;
gboolean have_double_buffer;
gboolean have_iturbt709;
GList *formats_list;
GList *channels_list;
GstCaps *caps;
/* Optimisation storage for buffer_alloc return */
GstCaps *last_caps;
gint last_format;
gint last_width;
gint last_height;
GType gst_xvcontext_get_type (void);
void gst_xvcontext_config_clear (GstXvContextConfig *config);
GstXvContext * gst_xvcontext_new (GstXvContextConfig *config, GError **error);
/* refcounting */
static inline GstXvContext *
gst_xvcontext_ref (GstXvContext * xvcontext)
return GST_XVCONTEXT_CAST (gst_mini_object_ref (GST_MINI_OBJECT_CAST (
static inline void
gst_xvcontext_unref (GstXvContext * xvcontext)
gst_mini_object_unref (GST_MINI_OBJECT_CAST (xvcontext));
gint gst_xvcontext_get_format_from_info (GstXvContext * xvcontext,
GstVideoInfo * info);
void gst_xvcontext_set_synchronous (GstXvContext * xvcontext,
gboolean synchronous);
void gst_xvcontext_update_colorbalance (GstXvContext * xvcontext,
GstXvContextConfig * config);
void gst_xvcontext_set_colorimetry (GstXvContext * xvcontext,
GstVideoColorimetry *colorimetry);
typedef struct _GstXWindow GstXWindow;
* GstXWindow:
* @win: the Window ID of this X11 window
* @width: the width in pixels of Window @win
* @height: the height in pixels of Window @win
* @internal: used to remember if Window @win was created internally or passed
* through the #GstVideoOverlay interface
* @gc: the Graphical Context of Window @win
* Structure used to store informations about a Window.
struct _GstXWindow
GstXvContext *context;
Window win;
gint width, height;
gboolean have_render_rect;
GstVideoRectangle render_rect;
gboolean internal;
GC gc;
GstXWindow * gst_xvcontext_create_xwindow (GstXvContext * context,
gint width, gint height);
GstXWindow * gst_xvcontext_create_xwindow_from_xid (GstXvContext * context, XID xid);
void gst_xwindow_destroy (GstXWindow * window);
void gst_xwindow_set_event_handling (GstXWindow * window, gboolean handle_events);
void gst_xwindow_set_title (GstXWindow * window, const gchar * title);
void gst_xwindow_update_geometry (GstXWindow * window);
void gst_xwindow_clear (GstXWindow * window);
void gst_xwindow_set_render_rectangle (GstXWindow * window,
gint x, gint y, gint width, gint height);
#endif /* __GST_XVCONTEXT_H__ */