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1/*
2 * Copyright © 2011 Intel Corporation
3 *
4 * Permission is hereby granted, free of charge, to any person obtaining a
5 * copy of this software and associated documentation files (the "Software"),
6 * to deal in the Software without restriction, including without limitation
7 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
8 * and/or sell copies of the Software, and to permit persons to whom the
9 * Software is furnished to do so, subject to the following conditions:
10 *
11 * The above copyright notice and this permission notice (including the next
12 * paragraph) shall be included in all copies or substantial portions of the
13 * Software.
14 *
15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
16 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
17 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
18 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
19 * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
20 * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
21 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
22 * DEALINGS IN THE SOFTWARE.
23 *
24 * Authors:
25 * Benjamin Franzke <benjaminfranzke@googlemail.com>
26 */
27
28#define _BSD_SOURCE
29
30#include <stddef.h>
31#include <stdio.h>
32#include <stdlib.h>
33#include <string.h>
34#include <stdint.h>
35
36#include <sys/types.h>
37#include <sys/stat.h>
38#include <unistd.h>
39
40#include "gbm.h"
41#include "gbmint.h"
42#include "common.h"
43#include "backend.h"
44
45#define ARRAY_SIZE(a) (sizeof(a)/sizeof((a)[0]))
46
47struct gbm_device *devices[16];
48
49static int device_num = 0;
50
51GBM_EXPORT int
52gbm_device_get_fd(struct gbm_device *gbm)
53{
54 return gbm->fd;
55}
56
57/* FIXME: maybe superfluous, use udev subclass from the fd? */
58GBM_EXPORT const char *
59gbm_device_get_backend_name(struct gbm_device *gbm)
60{
61 return gbm->name;
62}
63
64int
65gbm_device_is_format_supported(struct gbm_device *gbm,
66 enum gbm_bo_format format,
67 uint32_t usage)
68{
69 return gbm->is_format_supported(gbm, format, usage);
70}
71
72GBM_EXPORT void
73gbm_device_destroy(struct gbm_device *gbm)
74{
75 gbm->refcount--;
76 if (gbm->refcount == 0)
77 gbm->destroy(gbm);
78}
79
80GBM_EXPORT struct gbm_device *
81_gbm_mesa_get_device(int fd)
82{
83 struct gbm_device *gbm = NULL;
84 struct stat buf;
85 dev_t dev;
86 int i;
87
88 if (fd < 0 || fstat(fd, &buf) < 0 || !S_ISCHR(buf.st_mode)) {
89 fprintf(stderr, "_gbm_mesa_get_device: invalid fd: %d\n", fd);
90 return NULL;
91 }
92
93 for (i = 0; i < device_num; ++i) {
94 dev = devices[i]->stat.st_rdev;
95 if (major(dev) == major(buf.st_rdev) &&
96 minor(dev) == minor(buf.st_rdev)) {
97 gbm = devices[i];
98 gbm->refcount++;
99 break;
100 }
101 }
102
103 return gbm;
104}
105
106GBM_EXPORT struct gbm_device *
107gbm_create_device(int fd)
108{
109 struct gbm_device *gbm = NULL;
110 struct stat buf;
111
112 if (fd < 0 || fstat(fd, &buf) < 0 || !S_ISCHR(buf.st_mode)) {
113 fprintf(stderr, "gbm_create_device: invalid fd: %d\n", fd);
114 return NULL;
115 }
116
117 if (device_num == 0)
118 memset(devices, 0, sizeof devices);
119
120 gbm = _gbm_create_device(fd);
121 if (gbm == NULL)
122 return NULL;
123
124 gbm->dummy = gbm_create_device;
125 gbm->stat = buf;
126 gbm->refcount = 1;
127
128 if (device_num < ARRAY_SIZE(devices)-1)
129 devices[device_num++] = gbm;
130
131 return gbm;
132}
133
134GBM_EXPORT unsigned int
135gbm_bo_get_width(struct gbm_bo *bo)
136{
137 return bo->width;
138}
139
140GBM_EXPORT unsigned int
141gbm_bo_get_height(struct gbm_bo *bo)
142{
143 return bo->height;
144}
145
146GBM_EXPORT uint32_t
147gbm_bo_get_pitch(struct gbm_bo *bo)
148{
149 return bo->pitch;
150}
151
152GBM_EXPORT union gbm_bo_handle
153gbm_bo_get_handle(struct gbm_bo *bo)
154{
155 return bo->handle;
156}
157
158GBM_EXPORT void
159gbm_bo_destroy(struct gbm_bo *bo)
160{
161 bo->gbm->bo_destroy(bo);
162}
163
164GBM_EXPORT struct gbm_bo *
165gbm_bo_create(struct gbm_device *gbm,
166 uint32_t width, uint32_t height,
167 enum gbm_bo_format format, uint32_t usage)
168{
169 if (width == 0 || height == 0)
170 return NULL;
171
172 if (usage & GBM_BO_USE_CURSOR_64X64 &&
173 (width != 64 || height != 64))
174 return NULL;
175
176 return gbm->bo_create(gbm, width, height, format, usage);
177}
178
179GBM_EXPORT struct gbm_bo *
180gbm_bo_create_from_egl_image(struct gbm_device *gbm,
181 void *egl_dpy, void *egl_image,
182 uint32_t width, uint32_t height,
183 uint32_t usage)
184{
185 if (width == 0 || height == 0)
186 return NULL;
187
188 return gbm->bo_create_from_egl_image(gbm, egl_dpy, egl_image,
189 width, height, usage);
190}