1 /**************************************************************************
2 *
3 * Copyright 2013 Advanced Micro Devices, Inc.
4 * All Rights Reserved.
5 *
6 * Permission is hereby granted, free of charge, to any person obtaining a
7 * copy of this software and associated documentation files (the
8 * "Software"), to deal in the Software without restriction, including
9 * without limitation the rights to use, copy, modify, merge, publish,
10 * distribute, sub license, and/or sell copies of the Software, and to
11 * permit persons to whom the Software is furnished to do so, subject to
12 * the following conditions:
13 *
14 * The above copyright notice and this permission notice (including the
15 * next paragraph) shall be included in all copies or substantial portions
16 * of the Software.
17 *
18 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
19 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
20 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
21 * IN NO EVENT SHALL THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR
22 * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
23 * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
24 * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
25 *
26 **************************************************************************/
27
28 #include <assert.h>
29 #include <string.h>
30 #include <stdbool.h>
31
32 #if defined(HAVE_X11_PLATFORM)
33 #include <X11/Xlib.h>
34 #else
35 #define XOpenDisplay(x) NULL
36 #define XCloseDisplay(x)
37 #define Display void
38 #endif
39
40 #include "util/simple_mtx.h"
41 #include "util/u_thread.h"
42 #include "util/u_memory.h"
43 #include "loader/loader.h"
44
45 #include "vid_omx_common.h"
46
47 static simple_mtx_t omx_lock = SIMPLE_MTX_INITIALIZER;
48 static Display *omx_display = NULL;
49 static struct vl_screen *omx_screen = NULL;
50 static unsigned omx_usecount = 0;
51 static const char *omx_render_node = NULL;
52 static int drm_fd;
53
omx_get_screen(void)54 struct vl_screen *omx_get_screen(void)
55 {
56 static bool first_time = true;
57 simple_mtx_lock(&omx_lock);
58
59 if (!omx_screen) {
60 if (first_time) {
61 omx_render_node = debug_get_option("OMX_RENDER_NODE", NULL);
62 first_time = false;
63 }
64 if (omx_render_node) {
65 drm_fd = loader_open_device(omx_render_node);
66 if (drm_fd < 0)
67 goto error;
68
69 omx_screen = vl_drm_screen_create(drm_fd);
70 if (!omx_screen) {
71 close(drm_fd);
72 goto error;
73 }
74 } else {
75 omx_display = XOpenDisplay(NULL);
76 if (!omx_display)
77 goto error;
78
79 omx_screen = vl_dri3_screen_create(omx_display, 0);
80 if (!omx_screen)
81 omx_screen = vl_dri2_screen_create(omx_display, 0);
82 if (!omx_screen) {
83 XCloseDisplay(omx_display);
84 goto error;
85 }
86 }
87 }
88
89 ++omx_usecount;
90
91 simple_mtx_unlock(&omx_lock);
92 return omx_screen;
93
94 error:
95 simple_mtx_unlock(&omx_lock);
96 return NULL;
97 }
98
omx_put_screen(void)99 void omx_put_screen(void)
100 {
101 simple_mtx_lock(&omx_lock);
102 if ((--omx_usecount) == 0) {
103 omx_screen->destroy(omx_screen);
104 omx_screen = NULL;
105
106 if (omx_render_node)
107 close(drm_fd);
108 else
109 XCloseDisplay(omx_display);
110 }
111 simple_mtx_unlock(&omx_lock);
112 }
113