mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
synced 2024-11-23 02:01:12 +00:00
3b7f397863
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>
247 lines
7.2 KiB
C
247 lines
7.2 KiB
C
/* GStreamer
|
|
* Copyright (C) <2005> Julien Moutte <julien@moutte.net>
|
|
*
|
|
* 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., 51 Franklin St, Fifth Floor,
|
|
* Boston, MA 02110-1301, USA.
|
|
*/
|
|
|
|
#ifndef __GST_X_IMAGE_SINK_H__
|
|
#define __GST_X_IMAGE_SINK_H__
|
|
|
|
#include <gst/video/gstvideosink.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 <string.h>
|
|
#include <math.h>
|
|
|
|
/* Helper functions */
|
|
#include <gst/video/video.h>
|
|
|
|
G_BEGIN_DECLS
|
|
#define GST_TYPE_X_IMAGE_SINK \
|
|
(gst_x_image_sink_get_type())
|
|
#define GST_X_IMAGE_SINK(obj) \
|
|
(G_TYPE_CHECK_INSTANCE_CAST((obj), GST_TYPE_X_IMAGE_SINK, GstXImageSink))
|
|
#define GST_X_IMAGE_SINK_CLASS(klass) \
|
|
(G_TYPE_CHECK_CLASS_CAST((klass), GST_TYPE_X_IMAGE_SINK, GstXImageSinkClass))
|
|
#define GST_IS_X_IMAGE_SINK(obj) \
|
|
(G_TYPE_CHECK_INSTANCE_TYPE((obj), GST_TYPE_X_IMAGE_SINK))
|
|
#define GST_IS_X_IMAGE_SINK_CLASS(klass) \
|
|
(G_TYPE_CHECK_CLASS_TYPE((klass), GST_TYPE_X_IMAGE_SINK))
|
|
|
|
typedef struct _GstXContext GstXContext;
|
|
typedef struct _GstXWindow GstXWindow;
|
|
typedef struct _GstXTouchDevice GstXTouchDevice;
|
|
|
|
typedef struct _GstXImageSink GstXImageSink;
|
|
typedef struct _GstXImageSinkClass GstXImageSinkClass;
|
|
|
|
#include "ximagepool.h"
|
|
|
|
/*
|
|
* GstXContext:
|
|
* @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 whether of not XShm extension is usable or not even
|
|
* if the Extension is present
|
|
* @use_xkb: used to known wether of not Xkb extension is usable or not even
|
|
* if the Extension is present
|
|
* @use_xi2: used to known wether of not XInput2 extension is usable or not even
|
|
* if the Extension is present
|
|
* @xi_opcode: XInput opcode
|
|
* @caps: the #GstCaps that Display @disp can accept
|
|
*
|
|
* Structure used to store various information collected/calculated for a
|
|
* Display.
|
|
*/
|
|
struct _GstXContext
|
|
{
|
|
Display *disp;
|
|
|
|
Screen *screen;
|
|
gint screen_num;
|
|
|
|
Visual *visual;
|
|
|
|
Window root;
|
|
|
|
gulong white, black;
|
|
|
|
gint depth;
|
|
gint bpp;
|
|
|
|
gint width, height;
|
|
gint widthmm, heightmm;
|
|
GValue *par; /* calculated pixel aspect ratio */
|
|
|
|
gboolean use_xshm;
|
|
gboolean use_xkb;
|
|
gboolean use_xi2;
|
|
|
|
int xi_opcode;
|
|
|
|
GstCaps *caps;
|
|
GstCaps *last_caps;
|
|
};
|
|
|
|
/*
|
|
* 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 information about a Window.
|
|
*/
|
|
struct _GstXWindow
|
|
{
|
|
Window win;
|
|
gint width, height;
|
|
gboolean internal;
|
|
GC gc;
|
|
};
|
|
|
|
/*
|
|
* GstXTouchDevice:
|
|
* @name: the name of this decive
|
|
* @id: the device ID of this device
|
|
* @pressure_valuator: index of the valuator that encodes pressure data, if present
|
|
* @abs_pressure: if pressure is reported in absolute or relative values
|
|
* @current_pressure: stores the most recent pressure value for this device
|
|
* @pressure_min: lowest possible pressure value
|
|
* @pressure_max: highest possible pressure value
|
|
*
|
|
* Structure used to store information about a touchscreen device.
|
|
*/
|
|
struct _GstXTouchDevice {
|
|
gchar *name;
|
|
gint id, pressure_valuator;
|
|
gboolean abs_pressure;
|
|
gdouble current_pressure, pressure_min, pressure_max;
|
|
};
|
|
|
|
/**
|
|
* GstXImageSink:
|
|
* @display_name: the name of the Display we want to render to
|
|
* @xcontext: our instance's #GstXContext
|
|
* @xwindow: the #GstXWindow we are rendering to
|
|
* @ximage: internal #GstXImage used to store incoming buffers and render when
|
|
* not using the buffer_alloc optimization mechanism
|
|
* @cur_image: a reference to the last #GstXImage that was put to @xwindow. It
|
|
* is used when Expose events are received to redraw the latest video frame
|
|
* @event_thread: a thread listening for events on @xwindow and handling them
|
|
* @running: used to inform @event_thread if it should run/shutdown
|
|
* @fps_n: the framerate fraction numerator
|
|
* @fps_d: the framerate fraction denominator
|
|
* @last_touch: timestamp of the last received touch event
|
|
* @touch_devices: list of known touchscreen devices
|
|
* @x_lock: used to protect X calls as we are not using the XLib in threaded
|
|
* mode
|
|
* @flow_lock: used to protect data flow routines from external calls such as
|
|
* events from @event_thread or methods from the #GstVideoOverlay interface
|
|
* @par: used to override calculated pixel aspect ratio from @xcontext
|
|
* @pool_lock: used to protect the buffer pool
|
|
* @buffer_pool: a list of #GstXImageBuffer that could be reused at next buffer
|
|
* allocation call
|
|
* @synchronous: used to store if XSynchronous should be used or not (for
|
|
* debugging purpose only)
|
|
* @keep_aspect: used to remember if reverse negotiation scaling should respect
|
|
* aspect ratio
|
|
* @handle_events: used to know if we should handle select XEvents or not
|
|
*
|
|
* The #GstXImageSink data structure.
|
|
*/
|
|
struct _GstXImageSink
|
|
{
|
|
/* Our element stuff */
|
|
GstVideoSink videosink;
|
|
|
|
char *display_name;
|
|
|
|
GstXContext *xcontext;
|
|
GstXWindow *xwindow;
|
|
GstBuffer *cur_image;
|
|
|
|
GThread *event_thread;
|
|
gboolean running;
|
|
|
|
GstVideoInfo info;
|
|
|
|
/* Framerate numerator and denominator */
|
|
gint fps_n;
|
|
gint fps_d;
|
|
|
|
#ifdef HAVE_XI2
|
|
Time last_touch;
|
|
GArray *touch_devices;
|
|
#endif
|
|
|
|
GMutex x_lock;
|
|
GMutex flow_lock;
|
|
|
|
/* object-set pixel aspect ratio */
|
|
GValue *par;
|
|
|
|
/* the buffer pool */
|
|
GstBufferPool *pool;
|
|
|
|
gboolean synchronous;
|
|
gboolean keep_aspect;
|
|
gboolean handle_events;
|
|
gboolean handle_expose;
|
|
gboolean draw_border;
|
|
|
|
/* stream metadata */
|
|
gchar *media_title;
|
|
};
|
|
|
|
struct _GstXImageSinkClass
|
|
{
|
|
GstVideoSinkClass parent_class;
|
|
};
|
|
|
|
GType gst_x_image_sink_get_type (void);
|
|
GST_ELEMENT_REGISTER_DECLARE (ximagesink);
|
|
|
|
G_END_DECLS
|
|
#endif /* __GST_X_IMAGE_SINK_H__ */
|