1 /*
2 * va_wayland.c - Wayland API
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 <stdarg.h>
29 #include "va_wayland.h"
30 #include "va_wayland_drm.h"
31 #include "va_wayland_emgd.h"
32 #include "va_wayland_private.h"
33 #include "va_backend.h"
34 #include "va_backend_wayland.h"
35
36 static inline VADriverContextP
get_driver_context(VADisplay dpy)37 get_driver_context(VADisplay dpy)
38 {
39 if (!vaDisplayIsValid(dpy))
40 return NULL;
41 return ((VADisplayContextP)dpy)->pDriverContext;
42 }
43
44 void
va_wayland_error(const char * format,...)45 va_wayland_error(const char *format, ...)
46 {
47 va_list args;
48
49 va_start(args, format);
50 fprintf(stderr, "VA error: wayland: ");
51 vfprintf(stderr, format, args);
52 fprintf(stderr, "\n");
53 va_end(args);
54 }
55
56 static int
va_DisplayContextIsValid(VADisplayContextP pDisplayContext)57 va_DisplayContextIsValid(VADisplayContextP pDisplayContext)
58 {
59 VADriverContextP const pDriverContext = pDisplayContext->pDriverContext;
60
61 return (pDriverContext &&
62 pDriverContext->display_type == VA_DISPLAY_WAYLAND);
63 }
64
65 static void
va_DisplayContextDestroy(VADisplayContextP pDisplayContext)66 va_DisplayContextDestroy(VADisplayContextP pDisplayContext)
67 {
68 VADriverContextP pDriverContext;
69 VADisplayContextWaylandP pDisplayContextWl;
70
71 if (!pDisplayContext)
72 return;
73
74 pDisplayContextWl = pDisplayContext->opaque;
75 if (pDisplayContextWl && pDisplayContextWl->destroy)
76 pDisplayContextWl->destroy(pDisplayContext);
77
78 pDriverContext = pDisplayContext->pDriverContext;
79 if (pDriverContext) {
80 free(pDriverContext->vtable_wayland);
81 pDriverContext->vtable_wayland = NULL;
82 free(pDriverContext);
83 pDisplayContext->pDriverContext = NULL;
84 }
85
86 free(pDisplayContext->opaque);
87 pDisplayContext->opaque = NULL;
88 free(pDisplayContext);
89 }
90
91 static VAStatus
va_DisplayContextGetDriverName(VADisplayContextP pDisplayContext,char ** name)92 va_DisplayContextGetDriverName(VADisplayContextP pDisplayContext, char **name)
93 {
94 *name = NULL;
95 return VA_STATUS_ERROR_UNKNOWN;
96 }
97
98 /* -------------------------------------------------------------------------- */
99 /* --- Public interface --- */
100 /* -------------------------------------------------------------------------- */
101
102 struct va_wayland_backend {
103 VADisplayContextCreateFunc create;
104 VADisplayContextDestroyFunc destroy;
105 };
106
107 static const struct va_wayland_backend g_backends[] = {
108 { va_wayland_drm_create,
109 va_wayland_drm_destroy },
110 { va_wayland_emgd_create,
111 va_wayland_emgd_destroy },
112 { NULL, }
113 };
114
115 VADisplay
vaGetDisplayWl(struct wl_display * display)116 vaGetDisplayWl(struct wl_display *display)
117 {
118 VADisplayContextP pDisplayContext = NULL;
119 VADriverContextP pDriverContext;
120 struct VADriverVTableWayland *vtable;
121 unsigned int i;
122
123 pDisplayContext = calloc(1, sizeof(*pDisplayContext));
124 if (!pDisplayContext)
125 return NULL;
126
127 pDisplayContext->vadpy_magic = VA_DISPLAY_MAGIC;
128 pDisplayContext->vaIsValid = va_DisplayContextIsValid;
129 pDisplayContext->vaDestroy = va_DisplayContextDestroy;
130 pDisplayContext->vaGetDriverName = va_DisplayContextGetDriverName;
131
132 pDriverContext = calloc(1, sizeof(*pDriverContext));
133 if (!pDriverContext)
134 goto error;
135 pDisplayContext->pDriverContext = pDriverContext;
136
137 pDriverContext->native_dpy = display;
138 pDriverContext->display_type = VA_DISPLAY_WAYLAND;
139
140 vtable = calloc(1, sizeof(*vtable));
141 if (!vtable)
142 goto error;
143 pDriverContext->vtable_wayland = vtable;
144
145 vtable->version = VA_WAYLAND_API_VERSION;
146
147 for (i = 0; g_backends[i].create != NULL; i++) {
148 if (g_backends[i].create(pDisplayContext))
149 break;
150 g_backends[i].destroy(pDisplayContext);
151 }
152
153 return (VADisplay)pDisplayContext;
154
155 error:
156 va_DisplayContextDestroy(pDisplayContext);
157 return NULL;
158 }
159
160 VAStatus
vaGetSurfaceBufferWl(VADisplay dpy,VASurfaceID surface,unsigned int flags,struct wl_buffer ** out_buffer)161 vaGetSurfaceBufferWl(
162 VADisplay dpy,
163 VASurfaceID surface,
164 unsigned int flags,
165 struct wl_buffer **out_buffer
166 )
167 {
168 VADriverContextP const ctx = get_driver_context(dpy);
169
170 if (!ctx)
171 return VA_STATUS_ERROR_INVALID_DISPLAY;
172 if (!ctx->vtable_wayland || !ctx->vtable_wayland->vaGetSurfaceBufferWl)
173 return VA_STATUS_ERROR_UNIMPLEMENTED;
174 return ctx->vtable_wayland->vaGetSurfaceBufferWl(ctx, surface, flags,
175 out_buffer);
176 }
177
178 VAStatus
vaGetImageBufferWl(VADisplay dpy,VAImageID image,unsigned int flags,struct wl_buffer ** out_buffer)179 vaGetImageBufferWl(
180 VADisplay dpy,
181 VAImageID image,
182 unsigned int flags,
183 struct wl_buffer **out_buffer
184 )
185 {
186 VADriverContextP const ctx = get_driver_context(dpy);
187
188 if (!ctx)
189 return VA_STATUS_ERROR_INVALID_DISPLAY;
190 if (!ctx->vtable_wayland || !ctx->vtable_wayland->vaGetImageBufferWl)
191 return VA_STATUS_ERROR_UNIMPLEMENTED;
192 return ctx->vtable_wayland->vaGetImageBufferWl(ctx, image, flags,
193 out_buffer);
194 }
195