wayland-drm.c revision 8fafb0a67faa548cb16e122e214912a17835e369 
1/*
2 * Copyright © 2011 Kristian Høgsberg
3 * Copyright © 2011 Benjamin Franzke
4 *
5 * Permission is hereby granted, free of charge, to any person obtaining a
6 * copy of this software and associated documentation files (the "Software"),
7 * to deal in the Software without restriction, including without limitation
8 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
9 * and/or sell copies of the Software, and to permit persons to whom the
10 * Software is furnished to do so, subject to the following conditions:
11 *
12 * The above copyright notice and this permission notice (including the next
13 * paragraph) shall be included in all copies or substantial portions of the
14 * Software.
15 *
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
17 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
18 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
19 * NONINFRINGEMENT.  IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
20 * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
21 * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
22 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
23 * DEALINGS IN THE SOFTWARE.
24 *
25 * Authors:
26 *    Kristian Høgsberg <krh@bitplanet.net>
27 *    Benjamin Franzke <benjaminfranzke@googlemail.com>
28 */
29
30#include <stdio.h>
31#include <stdlib.h>
32#include <string.h>
33#include <stddef.h>
34#include <unistd.h>
35
36#include <wayland-server.h>
37#include "wayland-drm.h"
38#include "wayland-drm-server-protocol.h"
39
40#define MIN(x,y) (((x)<(y))?(x):(y))
41
42struct wl_drm {
43	struct wl_display *display;
44	struct wl_global *wl_drm_global;
45
46	void *user_data;
47	char *device_name;
48        uint32_t flags;
49
50	struct wayland_drm_callbacks *callbacks;
51
52        struct wl_buffer_interface buffer_interface;
53};
54
55static void
56destroy_buffer(struct wl_resource *resource)
57{
58	struct wl_drm_buffer *buffer = resource->data;
59	struct wl_drm *drm = buffer->drm;
60
61	drm->callbacks->release_buffer(drm->user_data, buffer);
62	free(buffer);
63}
64
65static void
66buffer_destroy(struct wl_client *client, struct wl_resource *resource)
67{
68	wl_resource_destroy(resource);
69}
70
71static void
72create_buffer(struct wl_client *client, struct wl_resource *resource,
73              uint32_t id, uint32_t name, int fd,
74              int32_t width, int32_t height,
75              uint32_t format,
76              int32_t offset0, int32_t stride0,
77              int32_t offset1, int32_t stride1,
78              int32_t offset2, int32_t stride2)
79{
80	struct wl_drm *drm = resource->data;
81	struct wl_drm_buffer *buffer;
82
83	buffer = calloc(1, sizeof *buffer);
84	if (buffer == NULL) {
85		wl_resource_post_no_memory(resource);
86		return;
87	}
88
89	buffer->drm = drm;
90	buffer->width = width;
91	buffer->height = height;
92	buffer->format = format;
93	buffer->offset[0] = offset0;
94	buffer->stride[0] = stride0;
95	buffer->offset[1] = offset1;
96	buffer->stride[1] = stride1;
97	buffer->offset[2] = offset2;
98	buffer->stride[2] = stride2;
99
100        drm->callbacks->reference_buffer(drm->user_data, name, fd, buffer);
101	if (buffer->driver_buffer == NULL) {
102		wl_resource_post_error(resource,
103				       WL_DRM_ERROR_INVALID_NAME,
104				       "invalid name");
105		return;
106	}
107
108	buffer->resource =
109		wl_resource_create(client, &wl_buffer_interface, 1, id);
110	if (!buffer->resource) {
111		wl_resource_post_no_memory(resource);
112		free(buffer);
113		return;
114	}
115
116	wl_resource_set_implementation(buffer->resource,
117				       (void (**)(void)) &drm->buffer_interface,
118				       buffer, destroy_buffer);
119}
120
121static void
122drm_create_buffer(struct wl_client *client, struct wl_resource *resource,
123		  uint32_t id, uint32_t name, int32_t width, int32_t height,
124		  uint32_t stride, uint32_t format)
125{
126        switch (format) {
127        case WL_DRM_FORMAT_ARGB8888:
128        case WL_DRM_FORMAT_XRGB8888:
129        case WL_DRM_FORMAT_YUYV:
130        case WL_DRM_FORMAT_RGB565:
131                break;
132        default:
133                wl_resource_post_error(resource,
134                                       WL_DRM_ERROR_INVALID_FORMAT,
135                                       "invalid format");
136           return;
137        }
138
139        create_buffer(client, resource, id,
140                      name, -1, width, height, format, 0, stride, 0, 0, 0, 0);
141}
142
143static void
144drm_create_planar_buffer(struct wl_client *client,
145                         struct wl_resource *resource,
146                         uint32_t id, uint32_t name,
147                         int32_t width, int32_t height, uint32_t format,
148                         int32_t offset0, int32_t stride0,
149                         int32_t offset1, int32_t stride1,
150                         int32_t offset2, int32_t stride2)
151{
152        switch (format) {
153	case WL_DRM_FORMAT_YUV410:
154	case WL_DRM_FORMAT_YUV411:
155	case WL_DRM_FORMAT_YUV420:
156	case WL_DRM_FORMAT_YUV422:
157	case WL_DRM_FORMAT_YUV444:
158	case WL_DRM_FORMAT_NV12:
159        case WL_DRM_FORMAT_NV16:
160                break;
161        default:
162                wl_resource_post_error(resource,
163                                       WL_DRM_ERROR_INVALID_FORMAT,
164                                       "invalid format");
165           return;
166        }
167
168        create_buffer(client, resource, id, name, -1, width, height, format,
169                      offset0, stride0, offset1, stride1, offset2, stride2);
170}
171
172static void
173drm_create_prime_buffer(struct wl_client *client,
174                        struct wl_resource *resource,
175                        uint32_t id, int fd,
176                        int32_t width, int32_t height, uint32_t format,
177                        int32_t offset0, int32_t stride0,
178                        int32_t offset1, int32_t stride1,
179                        int32_t offset2, int32_t stride2)
180{
181        create_buffer(client, resource, id, 0, fd, width, height, format,
182                      offset0, stride0, offset1, stride1, offset2, stride2);
183        close(fd);
184}
185
186static void
187drm_authenticate(struct wl_client *client,
188		 struct wl_resource *resource, uint32_t id)
189{
190	struct wl_drm *drm = resource->data;
191
192	if (drm->callbacks->authenticate(drm->user_data, id) < 0)
193		wl_resource_post_error(resource,
194				       WL_DRM_ERROR_AUTHENTICATE_FAIL,
195				       "authenicate failed");
196	else
197		wl_resource_post_event(resource, WL_DRM_AUTHENTICATED);
198}
199
200static const struct wl_drm_interface drm_interface = {
201	drm_authenticate,
202	drm_create_buffer,
203        drm_create_planar_buffer,
204        drm_create_prime_buffer
205};
206
207static void
208bind_drm(struct wl_client *client, void *data, uint32_t version, uint32_t id)
209{
210	struct wl_drm *drm = data;
211	struct wl_resource *resource;
212        uint32_t capabilities;
213
214	resource = wl_resource_create(client, &wl_drm_interface,
215				      MIN(version, 2), id);
216	if (!resource) {
217		wl_client_post_no_memory(client);
218		return;
219	}
220
221	wl_resource_set_implementation(resource, &drm_interface, data, NULL);
222
223	wl_resource_post_event(resource, WL_DRM_DEVICE, drm->device_name);
224	wl_resource_post_event(resource, WL_DRM_FORMAT,
225			       WL_DRM_FORMAT_ARGB8888);
226	wl_resource_post_event(resource, WL_DRM_FORMAT,
227			       WL_DRM_FORMAT_XRGB8888);
228        wl_resource_post_event(resource, WL_DRM_FORMAT,
229                               WL_DRM_FORMAT_RGB565);
230        wl_resource_post_event(resource, WL_DRM_FORMAT, WL_DRM_FORMAT_YUV410);
231        wl_resource_post_event(resource, WL_DRM_FORMAT, WL_DRM_FORMAT_YUV411);
232        wl_resource_post_event(resource, WL_DRM_FORMAT, WL_DRM_FORMAT_YUV420);
233        wl_resource_post_event(resource, WL_DRM_FORMAT, WL_DRM_FORMAT_YUV422);
234        wl_resource_post_event(resource, WL_DRM_FORMAT, WL_DRM_FORMAT_YUV444);
235        wl_resource_post_event(resource, WL_DRM_FORMAT, WL_DRM_FORMAT_NV12);
236        wl_resource_post_event(resource, WL_DRM_FORMAT, WL_DRM_FORMAT_NV16);
237        wl_resource_post_event(resource, WL_DRM_FORMAT, WL_DRM_FORMAT_YUYV);
238
239        capabilities = 0;
240        if (drm->flags & WAYLAND_DRM_PRIME)
241           capabilities |= WL_DRM_CAPABILITY_PRIME;
242
243        if (version >= 2)
244           wl_resource_post_event(resource, WL_DRM_CAPABILITIES, capabilities);
245}
246
247struct wl_drm_buffer *
248wayland_drm_buffer_get(struct wl_drm *drm, struct wl_resource *resource)
249{
250	if (resource == NULL)
251		return NULL;
252
253        if (wl_resource_instance_of(resource, &wl_buffer_interface,
254                                    &drm->buffer_interface))
255		return wl_resource_get_user_data(resource);
256        else
257		return NULL;
258}
259
260struct wl_drm *
261wayland_drm_init(struct wl_display *display, char *device_name,
262                 struct wayland_drm_callbacks *callbacks, void *user_data,
263                 uint32_t flags)
264{
265	struct wl_drm *drm;
266
267	drm = malloc(sizeof *drm);
268
269	drm->display = display;
270	drm->device_name = strdup(device_name);
271	drm->callbacks = callbacks;
272	drm->user_data = user_data;
273        drm->flags = flags;
274
275        drm->buffer_interface.destroy = buffer_destroy;
276
277	drm->wl_drm_global =
278		wl_global_create(display, &wl_drm_interface, 2,
279				 drm, bind_drm);
280
281	return drm;
282}
283
284void
285wayland_drm_uninit(struct wl_drm *drm)
286{
287	free(drm->device_name);
288
289	wl_global_destroy(drm->wl_drm_global);
290
291	free(drm);
292}
293
294uint32_t
295wayland_drm_buffer_get_format(struct wl_drm_buffer *buffer)
296{
297	return buffer->format;
298}
299
300void *
301wayland_drm_buffer_get_buffer(struct wl_drm_buffer *buffer)
302{
303	return buffer->driver_buffer;
304}
305