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
35#include <wayland-server.h>
36#include "wayland-drm.h"
37#include "wayland-drm-server-protocol.h"
38
39struct wl_drm {
40	struct wl_display *display;
41
42	void *user_data;
43	char *device_name;
44
45	struct wayland_drm_callbacks *callbacks;
46};
47
48static void
49destroy_buffer(struct wl_resource *resource)
50{
51	struct wl_drm_buffer *buffer = resource->data;
52	struct wl_drm *drm = buffer->drm;
53
54	drm->callbacks->release_buffer(drm->user_data, buffer);
55	free(buffer);
56}
57
58static void
59buffer_destroy(struct wl_client *client, struct wl_resource *resource)
60{
61	wl_resource_destroy(resource);
62}
63
64const static struct wl_buffer_interface drm_buffer_interface = {
65	buffer_destroy
66};
67
68static void
69create_buffer(struct wl_client *client, struct wl_resource *resource,
70              uint32_t id, uint32_t name, int32_t width, int32_t height,
71              uint32_t format,
72              int32_t offset0, int32_t stride0,
73              int32_t offset1, int32_t stride1,
74              int32_t offset2, int32_t stride2)
75{
76	struct wl_drm *drm = resource->data;
77	struct wl_drm_buffer *buffer;
78
79	buffer = calloc(1, sizeof *buffer);
80	if (buffer == NULL) {
81		wl_resource_post_no_memory(resource);
82		return;
83	}
84
85	buffer->drm = drm;
86	buffer->buffer.width = width;
87	buffer->buffer.height = height;
88	buffer->format = format;
89	buffer->offset[0] = offset0;
90	buffer->stride[0] = stride0;
91	buffer->offset[1] = offset1;
92	buffer->stride[1] = stride1;
93	buffer->offset[2] = offset2;
94	buffer->stride[2] = stride2;
95
96        drm->callbacks->reference_buffer(drm->user_data, name, buffer);
97	if (buffer->driver_buffer == NULL) {
98		wl_resource_post_error(resource,
99				       WL_DRM_ERROR_INVALID_NAME,
100				       "invalid name");
101		return;
102	}
103
104	buffer->buffer.resource.object.id = id;
105	buffer->buffer.resource.object.interface = &wl_buffer_interface;
106	buffer->buffer.resource.object.implementation =
107		(void (**)(void)) &drm_buffer_interface;
108	buffer->buffer.resource.data = buffer;
109
110	buffer->buffer.resource.destroy = destroy_buffer;
111	buffer->buffer.resource.client = resource->client;
112
113	wl_client_add_resource(resource->client, &buffer->buffer.resource);
114}
115
116static void
117drm_create_buffer(struct wl_client *client, struct wl_resource *resource,
118		  uint32_t id, uint32_t name, int32_t width, int32_t height,
119		  uint32_t stride, uint32_t format)
120{
121        switch (format) {
122        case WL_DRM_FORMAT_ARGB8888:
123        case WL_DRM_FORMAT_XRGB8888:
124        case WL_DRM_FORMAT_YUYV:
125                break;
126        default:
127                wl_resource_post_error(resource,
128                                       WL_DRM_ERROR_INVALID_FORMAT,
129                                       "invalid format");
130           return;
131        }
132
133        create_buffer(client, resource, id,
134                      name, width, height, format, 0, stride, 0, 0, 0, 0);
135}
136
137static void
138drm_create_planar_buffer(struct wl_client *client,
139                         struct wl_resource *resource,
140                         uint32_t id, uint32_t name,
141                         int32_t width, int32_t height, uint32_t format,
142                         int32_t offset0, int32_t stride0,
143                         int32_t offset1, int32_t stride1,
144                         int32_t offset2, int32_t stride2)
145{
146        switch (format) {
147	case WL_DRM_FORMAT_YUV410:
148	case WL_DRM_FORMAT_YUV411:
149	case WL_DRM_FORMAT_YUV420:
150	case WL_DRM_FORMAT_YUV422:
151	case WL_DRM_FORMAT_YUV444:
152	case WL_DRM_FORMAT_NV12:
153        case WL_DRM_FORMAT_NV16:
154                break;
155        default:
156                wl_resource_post_error(resource,
157                                       WL_DRM_ERROR_INVALID_FORMAT,
158                                       "invalid format");
159           return;
160        }
161
162        create_buffer(client, resource, id, name, width, height, format,
163                      offset0, stride0, offset1, stride1, offset2, stride2);
164}
165
166static void
167drm_authenticate(struct wl_client *client,
168		 struct wl_resource *resource, uint32_t id)
169{
170	struct wl_drm *drm = resource->data;
171
172	if (drm->callbacks->authenticate(drm->user_data, id) < 0)
173		wl_resource_post_error(resource,
174				       WL_DRM_ERROR_AUTHENTICATE_FAIL,
175				       "authenicate failed");
176	else
177		wl_resource_post_event(resource, WL_DRM_AUTHENTICATED);
178}
179
180const static struct wl_drm_interface drm_interface = {
181	drm_authenticate,
182	drm_create_buffer,
183        drm_create_planar_buffer
184};
185
186static void
187bind_drm(struct wl_client *client, void *data, uint32_t version, uint32_t id)
188{
189	struct wl_drm *drm = data;
190	struct wl_resource *resource;
191
192	resource = wl_client_add_object(client, &wl_drm_interface,
193					&drm_interface, id, data);
194	wl_resource_post_event(resource, WL_DRM_DEVICE, drm->device_name);
195	wl_resource_post_event(resource, WL_DRM_FORMAT,
196			       WL_DRM_FORMAT_ARGB8888);
197	wl_resource_post_event(resource, WL_DRM_FORMAT,
198			       WL_DRM_FORMAT_XRGB8888);
199        wl_resource_post_event(resource, WL_DRM_FORMAT, WL_DRM_FORMAT_YUV410);
200        wl_resource_post_event(resource, WL_DRM_FORMAT, WL_DRM_FORMAT_YUV411);
201        wl_resource_post_event(resource, WL_DRM_FORMAT, WL_DRM_FORMAT_YUV420);
202        wl_resource_post_event(resource, WL_DRM_FORMAT, WL_DRM_FORMAT_YUV422);
203        wl_resource_post_event(resource, WL_DRM_FORMAT, WL_DRM_FORMAT_YUV444);
204        wl_resource_post_event(resource, WL_DRM_FORMAT, WL_DRM_FORMAT_NV12);
205        wl_resource_post_event(resource, WL_DRM_FORMAT, WL_DRM_FORMAT_NV16);
206        wl_resource_post_event(resource, WL_DRM_FORMAT, WL_DRM_FORMAT_YUYV);
207}
208
209struct wl_drm *
210wayland_drm_init(struct wl_display *display, char *device_name,
211                 struct wayland_drm_callbacks *callbacks, void *user_data)
212{
213	struct wl_drm *drm;
214
215	drm = malloc(sizeof *drm);
216
217	drm->display = display;
218	drm->device_name = strdup(device_name);
219	drm->callbacks = callbacks;
220	drm->user_data = user_data;
221
222	wl_display_add_global(display, &wl_drm_interface, drm, bind_drm);
223
224	return drm;
225}
226
227void
228wayland_drm_uninit(struct wl_drm *drm)
229{
230	free(drm->device_name);
231
232	/* FIXME: need wl_display_del_{object,global} */
233
234	free(drm);
235}
236
237int
238wayland_buffer_is_drm(struct wl_buffer *buffer)
239{
240	return buffer->resource.object.implementation ==
241		(void (**)(void)) &drm_buffer_interface;
242}
243
244uint32_t
245wayland_drm_buffer_get_format(struct wl_buffer *buffer_base)
246{
247	struct wl_drm_buffer *buffer = (struct wl_drm_buffer *) buffer_base;
248
249	return buffer->format;
250}
251
252void *
253wayland_drm_buffer_get_buffer(struct wl_buffer *buffer_base)
254{
255	struct wl_drm_buffer *buffer = (struct wl_drm_buffer *) buffer_base;
256
257	return buffer->driver_buffer;
258}
259