mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
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9389754d1a
Send touch events for XI_TouchBegin, XI_TouchEnd, and XI_TouchUpdate events, grouping events with identical timestamps into one TOUCH_FRAME. Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/1633>
290 lines
8.2 KiB
C
290 lines
8.2 KiB
C
/* GStreamer
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* Copyright (C) <2005> Julien Moutte <julien@moutte.net>
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library 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 GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
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* Boston, MA 02110-1301, USA.
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*/
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#ifndef __GST_XVCONTEXT_H__
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#define __GST_XVCONTEXT_H__
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#ifdef HAVE_XSHM
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#include <sys/types.h>
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#include <sys/ipc.h>
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#include <sys/shm.h>
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#endif /* HAVE_XSHM */
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#include <X11/Xlib.h>
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#include <X11/Xutil.h>
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#ifdef HAVE_XSHM
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#include <X11/extensions/XShm.h>
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#endif /* HAVE_XSHM */
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#include <X11/extensions/Xv.h>
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#include <X11/extensions/Xvlib.h>
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#include <string.h>
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#include <math.h>
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#include <stdlib.h>
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#include <gst/video/video.h>
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G_BEGIN_DECLS
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typedef struct _GstXvContextConfig GstXvContextConfig;
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typedef struct _GstXvImageFormat GstXvImageFormat;
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typedef struct _GstXvContext GstXvContext;
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typedef struct _GstXvTouchDevice GstXvTouchDevice;
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/**
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* GstXvContextConfig:
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*
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* current configuration of the context
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*/
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struct _GstXvContextConfig
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{
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gchar *display_name;
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guint adaptor_nr;
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/* port attributes */
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gboolean autopaint_colorkey;
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gint colorkey;
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gboolean double_buffer;
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gint brightness;
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gint contrast;
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gint hue;
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gint saturation;
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gboolean cb_changed;
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};
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/**
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* GstXvImageFormat:
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* @format: the image format
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* @caps: generated #GstCaps for this image format
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*
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* Structure storing image format to #GstCaps association.
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*/
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struct _GstXvImageFormat
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{
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gint format;
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GstVideoFormat vformat;
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GstCaps *caps;
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};
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#define GST_TYPE_XVCONTEXT (gst_xvcontext_get_type())
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#define GST_IS_XVCONTEXT(obj) (GST_IS_MINI_OBJECT_TYPE(obj, GST_TYPE_XVCONTEXT))
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#define GST_XVCONTEXT_CAST(obj) ((GstXvContext *)obj)
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#define GST_XVCONTEXT(obj) (GST_XVCONTEXT_CAST(obj))
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/*
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* GstXvContext:
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* @disp: the X11 Display of this context
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* @screen: the default Screen of Display @disp
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* @screen_num: the Screen number of @screen
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* @visual: the default Visual of Screen @screen
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* @root: the root Window of Display @disp
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* @white: the value of a white pixel on Screen @screen
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* @black: the value of a black pixel on Screen @screen
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* @depth: the color depth of Display @disp
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* @bpp: the number of bits per pixel on Display @disp
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* @endianness: the endianness of image bytes on Display @disp
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* @width: the width in pixels of Display @disp
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* @height: the height in pixels of Display @disp
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* @widthmm: the width in millimeters of Display @disp
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* @heightmm: the height in millimeters of Display @disp
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* @par: the pixel aspect ratio calculated from @width, @widthmm and @height,
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* @heightmm ratio
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* @use_xshm: used to known whether of not XShm extension is usable or not even
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* if the Extension is present
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* @use_xkb: used to known wether of not Xkb extension is usable or not even
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* if the Extension is present
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* @use_xi2: used to known wether of not XInput extension is usable or not even
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* if the Extension is present
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* @xi_opcode: XInput opcode
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* @xv_port_id: the XVideo port ID
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* @im_format: used to store at least a valid format for XShm calls checks
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* @formats_list: list of supported image formats on @xv_port_id
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* @channels_list: list of #GstColorBalanceChannels
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* @caps: the #GstCaps that Display @disp can accept
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*
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* Structure used to store various information collected/calculated for a
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* Display.
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*/
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struct _GstXvContext
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{
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GstMiniObject parent;
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GMutex lock;
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Display *disp;
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Screen *screen;
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gint screen_num;
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Visual *visual;
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Window root;
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gulong white, black;
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gint depth;
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gint bpp;
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gint endianness;
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gint width, height;
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gint widthmm, heightmm;
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GValue *par; /* calculated pixel aspect ratio */
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gboolean use_xshm;
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gboolean use_xkb;
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gboolean use_xi2;
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int xi_opcode;
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XvPortID xv_port_id;
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guint nb_adaptors;
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gchar **adaptors;
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guint adaptor_nr;
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gint im_format;
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/* port features */
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gboolean have_autopaint_colorkey;
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gboolean have_colorkey;
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gboolean have_double_buffer;
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gboolean have_iturbt709;
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gboolean have_xvcolorspace;
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GList *formats_list;
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GList *channels_list;
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GstCaps *caps;
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/* Optimisation storage for buffer_alloc return */
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GstCaps *last_caps;
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gint last_format;
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gint last_width;
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gint last_height;
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};
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GType gst_xvcontext_get_type (void);
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void gst_xvcontext_config_clear (GstXvContextConfig *config);
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GstXvContext * gst_xvcontext_new (GstXvContextConfig *config, GError **error);
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/* refcounting */
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static inline GstXvContext *
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gst_xvcontext_ref (GstXvContext * xvcontext)
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{
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return GST_XVCONTEXT_CAST (gst_mini_object_ref (GST_MINI_OBJECT_CAST (
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xvcontext)));
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}
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static inline void
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gst_xvcontext_unref (GstXvContext * xvcontext)
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{
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gst_mini_object_unref (GST_MINI_OBJECT_CAST (xvcontext));
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}
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gint gst_xvcontext_get_format_from_info (GstXvContext * xvcontext,
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const GstVideoInfo * info);
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void gst_xvcontext_set_synchronous (GstXvContext * xvcontext,
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gboolean synchronous);
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void gst_xvcontext_update_colorbalance (GstXvContext * xvcontext,
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GstXvContextConfig * config);
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void gst_xvcontext_set_colorimetry (GstXvContext * xvcontext,
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GstVideoColorimetry *colorimetry);
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typedef struct _GstXWindow GstXWindow;
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/*
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* GstXWindow:
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* @win: the Window ID of this X11 window
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* @width: the width in pixels of Window @win
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* @height: the height in pixels of Window @win
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* @internal: used to remember if Window @win was created internally or passed
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* through the #GstVideoOverlay interface
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* @gc: the Graphical Context of Window @win
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* @last_touch: timestamp of the last received touch event
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* @touch_devices: list of known touchscreen devices
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*
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* Structure used to store information about a Window.
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*/
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struct _GstXWindow
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{
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GstXvContext *context;
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Window win;
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gint width, height;
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gboolean have_render_rect;
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GstVideoRectangle render_rect;
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gboolean internal;
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GC gc;
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#ifdef HAVE_XI2
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Time last_touch;
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GArray *touch_devices;
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#endif
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};
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/*
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* GstXvTouchDevice:
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* @name: the name of this decive
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* @id: the device ID of this device
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* @pressure_valuator: index of the valuator that encodes pressure data, if present
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* @abs_pressure: if pressure is reported in absolute or relative values
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* @current_pressure: stores the most recent pressure value for this device
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* @pressure_min: lowest possible pressure value
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* @pressure_max: highest possible pressure value
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*
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* Structure used to store information about a touchscreen device.
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*/
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struct _GstXvTouchDevice {
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gchar *name;
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gint id, pressure_valuator;
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gboolean abs_pressure;
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gdouble current_pressure, pressure_min, pressure_max;
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};
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G_END_DECLS
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GstXWindow * gst_xvcontext_create_xwindow (GstXvContext * context,
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gint width, gint height);
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GstXWindow * gst_xvcontext_create_xwindow_from_xid (GstXvContext * context, XID xid);
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void gst_xwindow_destroy (GstXWindow * window);
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#ifdef HAVE_XI2
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void gst_xwindow_select_touch_events (GstXvContext * context, GstXWindow * window);
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#endif
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void gst_xwindow_set_event_handling (GstXWindow * window, gboolean handle_events);
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void gst_xwindow_set_title (GstXWindow * window, const gchar * title);
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void gst_xwindow_update_geometry (GstXWindow * window);
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void gst_xwindow_clear (GstXWindow * window);
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void gst_xwindow_set_render_rectangle (GstXWindow * window,
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gint x, gint y, gint width, gint height);
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#endif /* __GST_XVCONTEXT_H__ */
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