1 /*
2 * va_wayland_emgd.c - Wayland/EMGD helpers
3 *
4 * Copyright (c) 2012 Intel Corporation. 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 INTEL AND/OR ITS SUPPLIERS 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 #include "sysdeps.h"
28 #include <unistd.h>
29 #include <dlfcn.h>
30 #include "va_drmcommon.h"
31 #include "va_wayland_emgd.h"
32 #include "va_wayland_private.h"
33
34 /* XXX: Wayland/EMGD support currently lives in libwayland-emgd.so.* library */
35 #define LIBWAYLAND_EMGD_NAME "libwayland-emgd.so.1"
36
37 typedef struct va_wayland_emgd_context {
38 struct va_wayland_context base;
39 void *handle;
40 struct wl_emgd *emgd;
41 void *emgd_interface;
42 unsigned int is_created : 1;
43 struct wl_registry *registry;
44 } VADisplayContextWaylandEMGD;
45
46 static inline void
wl_emgd_destroy(struct wl_emgd * emgd)47 wl_emgd_destroy(struct wl_emgd *emgd)
48 {
49 wl_proxy_destroy((struct wl_proxy *)emgd);
50 }
51
52 static VAStatus
va_DisplayContextGetDriverName(VADisplayContextP pDisplayContext,char ** driver_name_ptr)53 va_DisplayContextGetDriverName(
54 VADisplayContextP pDisplayContext,
55 char **driver_name_ptr
56 )
57 {
58 *driver_name_ptr = strdup("emgd");
59 return VA_STATUS_SUCCESS;
60 }
61
62 void
va_wayland_emgd_destroy(VADisplayContextP pDisplayContext)63 va_wayland_emgd_destroy(VADisplayContextP pDisplayContext)
64 {
65 VADriverContextP const ctx = pDisplayContext->pDriverContext;
66 VADisplayContextWaylandEMGD * const wl_emgd_ctx = pDisplayContext->opaque;
67 struct drm_state * const drm_state = ctx->drm_state;
68
69 if (wl_emgd_ctx->emgd) {
70 wl_emgd_destroy(wl_emgd_ctx->emgd);
71 wl_emgd_ctx->emgd = NULL;
72 }
73 wl_emgd_ctx->is_created = 0;
74
75 if (wl_emgd_ctx->handle) {
76 dlclose(wl_emgd_ctx->handle);
77 wl_emgd_ctx->handle = NULL;
78 }
79
80 if (drm_state) {
81 if (drm_state->fd >= 0) {
82 close(drm_state->fd);
83 drm_state->fd = -1;
84 }
85 free(ctx->drm_state);
86 ctx->drm_state = NULL;
87 }
88 }
89
90 static void
registry_handle_global(void * data,struct wl_registry * registry,uint32_t id,const char * interface,uint32_t version)91 registry_handle_global(
92 void *data,
93 struct wl_registry *registry,
94 uint32_t id,
95 const char *interface,
96 uint32_t version
97 )
98 {
99 VADisplayContextWaylandEMGD *wl_emgd_ctx = data;
100
101 if (strcmp(interface, "wl_emgd") == 0) {
102 wl_emgd_ctx->emgd =
103 wl_registry_bind(registry, id, wl_emgd_ctx->emgd_interface, 1);
104 }
105 }
106
107 static const struct wl_registry_listener registry_listener = {
108 registry_handle_global,
109 NULL,
110 };
111
112 bool
va_wayland_emgd_create(VADisplayContextP pDisplayContext)113 va_wayland_emgd_create(VADisplayContextP pDisplayContext)
114 {
115 VADriverContextP const ctx = pDisplayContext->pDriverContext;
116 VADisplayContextWaylandEMGD *wl_emgd_ctx;
117 struct drm_state *drm_state;
118 uint32_t id;
119
120 wl_emgd_ctx = malloc(sizeof(*wl_emgd_ctx));
121 if (!wl_emgd_ctx)
122 return false;
123 wl_emgd_ctx->base.destroy = va_wayland_emgd_destroy;
124 wl_emgd_ctx->handle = NULL;
125 wl_emgd_ctx->emgd = NULL;
126 wl_emgd_ctx->emgd_interface = NULL;
127 wl_emgd_ctx->is_created = 0;
128 pDisplayContext->opaque = wl_emgd_ctx;
129 pDisplayContext->vaGetDriverName = va_DisplayContextGetDriverName;
130
131 drm_state = calloc(1, sizeof(struct drm_state));
132 if (!drm_state)
133 return false;
134 drm_state->fd = -1;
135 drm_state->auth_type = 0;
136 ctx->drm_state = drm_state;
137
138 wl_emgd_ctx->handle = dlopen(LIBWAYLAND_EMGD_NAME, RTLD_LAZY|RTLD_LOCAL);
139 if (!wl_emgd_ctx->handle)
140 return false;
141
142 wl_emgd_ctx->emgd_interface =
143 dlsym(wl_emgd_ctx->handle, "wl_emgd_interface");
144 if (!wl_emgd_ctx->emgd_interface)
145 return false;
146
147 wl_emgd_ctx->registry = wl_display_get_registry(ctx->native_dpy);
148 wl_registry_add_listener(wl_emgd_ctx->registry, ®istry_listener, wl_emgd_ctx);
149 wl_display_roundtrip(ctx->native_dpy);
150
151 /* registry_handle_global should have been called by the
152 * wl_display_roundtrip above
153 */
154 if (!wl_emgd_ctx->emgd)
155 return false;
156 return true;
157 }
158