1 /*
2 * Copyright (c) 2012 Intel Corporation. All Rights Reserved.
3 *
4 * Permission is hereby granted, free of charge, to any person obtaining a
5 * copy of this software and associated documentation files (the
6 * "Software"), to deal in the Software without restriction, including
7 * without limitation the rights to use, copy, modify, merge, publish,
8 * distribute, sub license, and/or sell copies of the Software, and to
9 * permit persons to whom the Software is furnished to do so, subject to
10 * the following conditions:
11 *
12 * The above copyright notice and this permission notice (including the
13 * next paragraph) shall be included in all copies or substantial portions
14 * of the Software.
15 *
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
17 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
18 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
19 * IN NO EVENT SHALL PRECISION INSIGHT AND/OR ITS SUPPLIERS BE LIABLE FOR
20 * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
21 * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
22 * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
23 */
24
25 #include <stdio.h>
26 #include <stdbool.h>
27 #include <va/va_x11.h>
28 #include "va_display.h"
29
30 static Display *x11_display;
31 static Window x11_window;
32
33 static VADisplay
va_open_display_x11(void)34 va_open_display_x11(void)
35 {
36 x11_display = XOpenDisplay(NULL);
37 if (!x11_display) {
38 fprintf(stderr, "error: can't connect to X server!\n");
39 return NULL;
40 }
41 return vaGetDisplay(x11_display);
42 }
43
44 static void
va_close_display_x11(VADisplay va_dpy)45 va_close_display_x11(VADisplay va_dpy)
46 {
47 if (!x11_display)
48 return;
49
50 if (x11_window) {
51 XUnmapWindow(x11_display, x11_window);
52 XDestroyWindow(x11_display, x11_window);
53 x11_window = None;
54 }
55 XCloseDisplay(x11_display);
56 x11_display = NULL;
57 }
58
59 static int
ensure_window(unsigned int width,unsigned int height)60 ensure_window(unsigned int width, unsigned int height)
61 {
62 Window win, rootwin;
63 unsigned int black_pixel, white_pixel;
64 int screen;
65
66 if (!x11_display)
67 return 0;
68
69 if (x11_window) {
70 XResizeWindow(x11_display, x11_window, width, height);
71 return 1;
72 }
73
74 screen = DefaultScreen(x11_display);
75 rootwin = RootWindow(x11_display, screen);
76 black_pixel = BlackPixel(x11_display, screen);
77 white_pixel = WhitePixel(x11_display, screen);
78
79 win = XCreateSimpleWindow(
80 x11_display,
81 rootwin,
82 0, 0, width, height,
83 1, black_pixel, white_pixel
84 );
85 if (!win)
86 return 0;
87 x11_window = win;
88
89 XMapWindow(x11_display, x11_window);
90 XSync(x11_display, False);
91 return 1;
92 }
93
94 static inline bool
validate_rect(const VARectangle * rect)95 validate_rect(const VARectangle *rect)
96 {
97 return (rect &&
98 rect->x >= 0 &&
99 rect->y >= 0 &&
100 rect->width > 0 &&
101 rect->height > 0);
102 }
103
104 static VAStatus
va_put_surface_x11(VADisplay va_dpy,VASurfaceID surface,const VARectangle * src_rect,const VARectangle * dst_rect)105 va_put_surface_x11(
106 VADisplay va_dpy,
107 VASurfaceID surface,
108 const VARectangle *src_rect,
109 const VARectangle *dst_rect
110 )
111 {
112 unsigned int win_width, win_height;
113
114 if (!va_dpy)
115 return VA_STATUS_ERROR_INVALID_DISPLAY;
116 if (surface == VA_INVALID_SURFACE)
117 return VA_STATUS_ERROR_INVALID_SURFACE;
118 if (!validate_rect(src_rect) || !validate_rect(dst_rect))
119 return VA_STATUS_ERROR_INVALID_PARAMETER;
120
121 win_width = dst_rect->x + dst_rect->width;
122 win_height = dst_rect->y + dst_rect->height;
123 if (!ensure_window(win_width, win_height))
124 return VA_STATUS_ERROR_ALLOCATION_FAILED;
125 return vaPutSurface(va_dpy, surface, x11_window,
126 src_rect->x, src_rect->y,
127 src_rect->width, src_rect->height,
128 dst_rect->x, dst_rect->y,
129 dst_rect->width, dst_rect->height,
130 NULL, 0,
131 VA_FRAME_PICTURE);
132 }
133
134 const VADisplayHooks va_display_hooks_x11 = {
135 "x11",
136 va_open_display_x11,
137 va_close_display_x11,
138 va_put_surface_x11,
139 };
140