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 "os/os_thread.h"
41 #include "util/u_memory.h"
42 #include "loader/loader.h"
43
44 #include "vid_omx_common.h"
45
46 static mtx_t omx_lock = _MTX_INITIALIZER_NP;
47 static Display *omx_display = NULL;
48 static struct vl_screen *omx_screen = NULL;
49 static unsigned omx_usecount = 0;
50 static const char *omx_render_node = NULL;
51 static int drm_fd;
52
omx_get_screen(void)53 struct vl_screen *omx_get_screen(void)
54 {
55 static bool first_time = true;
56 mtx_lock(&omx_lock);
57
58 if (!omx_screen) {
59 if (first_time) {
60 omx_render_node = debug_get_option("OMX_RENDER_NODE", NULL);
61 first_time = false;
62 }
63 if (omx_render_node) {
64 drm_fd = loader_open_device(omx_render_node);
65 if (drm_fd < 0)
66 goto error;
67
68 omx_screen = vl_drm_screen_create(drm_fd);
69 if (!omx_screen) {
70 close(drm_fd);
71 goto error;
72 }
73 } else {
74 omx_display = XOpenDisplay(NULL);
75 if (!omx_display)
76 goto error;
77
78 omx_screen = vl_dri3_screen_create(omx_display, 0);
79 if (!omx_screen)
80 omx_screen = vl_dri2_screen_create(omx_display, 0);
81 if (!omx_screen) {
82 XCloseDisplay(omx_display);
83 goto error;
84 }
85 }
86 }
87
88 ++omx_usecount;
89
90 mtx_unlock(&omx_lock);
91 return omx_screen;
92
93 error:
94 mtx_unlock(&omx_lock);
95 return NULL;
96 }
97
omx_put_screen(void)98 void omx_put_screen(void)
99 {
100 mtx_lock(&omx_lock);
101 if ((--omx_usecount) == 0) {
102 omx_screen->destroy(omx_screen);
103 omx_screen = NULL;
104
105 if (omx_render_node)
106 close(drm_fd);
107 else
108 XCloseDisplay(omx_display);
109 }
110 mtx_unlock(&omx_lock);
111 }
112