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- Committer: Bazaar Package Importer
- Author(s): Bryce Harrington
- Date: 2011-02-21 18:35:33 UTC
- Revision ID: james.westby@ubuntu.com-20110221183533-4dm0eushai2b571k
Tags: upstream-0.1~git20101129.ac93a3d3
Import upstream version 0.1~git20101129.ac93a3d3
- files added:
- clients
- compositor
- data
- m4
- protocol
- spec
- wayland
added
removed
compositor/compositor-drm.c
1
/*
2
* Copyright © 2008-2010 Kristian Høgsberg
3
*
4
* This program is free software; you can redistribute it and/or modify
5
* it under the terms of the GNU General Public License as published by
6
* the Free Software Foundation; either version 2 of the License, or
7
* (at your option) any later version.
8
*
9
* This program is distributed in the hope that it will be useful,
10
* but WITHOUT ANY WARRANTY; without even the implied warranty of
11
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12
* GNU General Public License for more details.
13
*
14
* You should have received a copy of the GNU General Public License
15
* along with this program; if not, write to the Free Software Foundation,
16
* Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
17
*/
18
19
#include <stdio.h>
20
#include <stdlib.h>
21
#include <string.h>
22
#include <fcntl.h>
23
#include <unistd.h>
24
25
#include <signal.h>
26
#include <linux/kd.h>
27
#include <linux/vt.h>
28
#include <linux/input.h>
29
30
#define GL_GLEXT_PROTOTYPES
31
#define EGL_EGLEXT_PROTOTYPES
32
#include <GLES2/gl2.h>
33
#include <GLES2/gl2ext.h>
34
#include <EGL/egl.h>
35
#include <EGL/eglext.h>
36
37
#include "compositor.h"
38
39
struct drm_compositor {
40
struct wlsc_compositor base;
41
42
struct udev *udev;
43
struct wl_event_source *drm_source;
44
45
struct wl_event_source *term_signal_source;
46
47
/* tty handling state */
48
int tty_fd;
49
uint32_t vt_active : 1;
50
51
struct termios terminal_attributes;
52
struct wl_event_source *tty_input_source;
53
struct wl_event_source *enter_vt_source;
54
struct wl_event_source *leave_vt_source;
55
};
56
57
struct drm_output {
58
struct wlsc_output base;
59
60
drmModeModeInfo mode;
61
uint32_t crtc_id;
62
uint32_t connector_id;
63
GLuint rbo[2];
64
uint32_t fb_id[2];
65
EGLImageKHR image[2];
66
uint32_t current;
67
};
68
69
struct drm_input {
70
struct wlsc_input_device base;
71
};
72
73
struct evdev_input_device {
74
struct drm_input *master;
75
struct wl_event_source *source;
76
int tool, new_x, new_y;
77
int base_x, base_y;
78
int fd;
79
};
80
81
static void evdev_input_device_data(int fd, uint32_t mask, void *data)
82
{
83
struct drm_compositor *c;
84
struct evdev_input_device *device = data;
85
struct input_event ev[8], *e, *end;
86
int len, value, dx, dy, absolute_event;
87
int x, y;
88
uint32_t time;
89
90
c = (struct drm_compositor *) device->master->base.ec;
91
if (!c->vt_active)
92
return;
93
94
dx = 0;
95
dy = 0;
96
absolute_event = 0;
97
x = device->master->base.x;
98
y = device->master->base.y;
99
100
len = read(fd, &ev, sizeof ev);
101
if (len < 0 || len % sizeof e[0] != 0) {
102
/* FIXME: handle error... reopen device? */;
103
return;
104
}
105
106
e = ev;
107
end = (void *) ev + len;
108
for (e = ev; e < end; e++) {
109
/* Get the signed value, earlier kernels had this as unsigned */
110
value = e->value;
111
time = e->time.tv_sec * 1000 + e->time.tv_usec / 1000;
112
113
switch (e->type) {
114
case EV_REL:
115
switch (e->code) {
116
case REL_X:
117
dx += value;
118
break;
119
120
case REL_Y:
121
dy += value;
122
break;
123
}
124
break;
125
126
case EV_ABS:
127
absolute_event = 1;
128
switch (e->code) {
129
case ABS_X:
130
if (device->new_x) {
131
device->base_x = x - value;
132
device->new_x = 0;
133
}
134
x = device->base_x + value;
135
break;
136
case ABS_Y:
137
if (device->new_y) {
138
device->base_y = y - value;
139
device->new_y = 0;
140
}
141
y = device->base_y + value;
142
break;
143
}
144
break;
145
146
case EV_KEY:
147
if (value == 2)
148
break;
149
150
switch (e->code) {
151
case BTN_TOUCH:
152
case BTN_TOOL_PEN:
153
case BTN_TOOL_RUBBER:
154
case BTN_TOOL_BRUSH:
155
case BTN_TOOL_PENCIL:
156
case BTN_TOOL_AIRBRUSH:
157
case BTN_TOOL_FINGER:
158
case BTN_TOOL_MOUSE:
159
case BTN_TOOL_LENS:
160
if (device->tool == 0 && value) {
161
device->new_x = 1;
162
device->new_y = 1;
163
}
164
device->tool = value ? e->code : 0;
165
break;
166
167
case BTN_LEFT:
168
case BTN_RIGHT:
169
case BTN_MIDDLE:
170
case BTN_SIDE:
171
case BTN_EXTRA:
172
case BTN_FORWARD:
173
case BTN_BACK:
174
case BTN_TASK:
175
notify_button(&device->master->base,
176
time, e->code, value);
177
break;
178
179
default:
180
notify_key(&device->master->base,
181
time, e->code, value);
182
break;
183
}
184
}
185
}
186
187
if (dx != 0 || dy != 0)
188
notify_motion(&device->master->base, time, x + dx, y + dy);
189
if (absolute_event && device->tool)
190
notify_motion(&device->master->base, time, x, y);
191
}
192
193
static struct evdev_input_device *
194
evdev_input_device_create(struct drm_input *master,
195
struct wl_display *display, const char *path)
196
{
197
struct evdev_input_device *device;
198
struct wl_event_loop *loop;
199
200
device = malloc(sizeof *device);
201
if (device == NULL)
202
return NULL;
203
204
device->tool = 1;
205
device->new_x = 1;
206
device->new_y = 1;
207
device->master = master;
208
209
device->fd = open(path, O_RDONLY);
210
if (device->fd < 0) {
211
free(device);
212
fprintf(stderr, "couldn't create pointer for %s: %m\n", path);
213
return NULL;
214
}
215
216
loop = wl_display_get_event_loop(display);
217
device->source = wl_event_loop_add_fd(loop, device->fd,
218
WL_EVENT_READABLE,
219
evdev_input_device_data, device);
220
if (device->source == NULL) {
221
close(device->fd);
222
free(device);
223
return NULL;
224
}
225
226
return device;
227
}
228
229
static void
230
drm_input_create(struct drm_compositor *c)
231
{
232
struct drm_input *input;
233
struct udev_enumerate *e;
234
struct udev_list_entry *entry;
235
struct udev_device *device;
236
const char *path;
237
238
input = malloc(sizeof *input);
239
if (input == NULL)
240
return;
241
242
memset(input, 0, sizeof *input);
243
wlsc_input_device_init(&input->base, &c->base);
244
245
e = udev_enumerate_new(c->udev);
246
udev_enumerate_add_match_subsystem(e, "input");
247
udev_enumerate_add_match_property(e, "WAYLAND_SEAT", "1");
248
udev_enumerate_scan_devices(e);
249
udev_list_entry_foreach(entry, udev_enumerate_get_list_entry(e)) {
250
path = udev_list_entry_get_name(entry);
251
device = udev_device_new_from_syspath(c->udev, path);
252
evdev_input_device_create(input, c->base.wl_display,
253
udev_device_get_devnode(device));
254
}
255
udev_enumerate_unref(e);
256
257
c->base.input_device = &input->base;
258
}
259
260
static void
261
drm_compositor_present(struct wlsc_compositor *ec)
262
{
263
struct drm_compositor *c = (struct drm_compositor *) ec;
264
struct drm_output *output;
265
266
wl_list_for_each(output, &ec->output_list, base.link) {
267
output->current ^= 1;
268
269
glFramebufferRenderbuffer(GL_FRAMEBUFFER,
270
GL_COLOR_ATTACHMENT0,
271
GL_RENDERBUFFER,
272
output->rbo[output->current]);
273
274
drmModePageFlip(c->base.drm.fd, output->crtc_id,
275
output->fb_id[output->current ^ 1],
276
DRM_MODE_PAGE_FLIP_EVENT, output);
277
}
278
}
279
280
static void
281
page_flip_handler(int fd, unsigned int frame,
282
unsigned int sec, unsigned int usec, void *data)
283
{
284
struct wlsc_output *output = data;
285
struct wlsc_compositor *compositor = output->compositor;
286
uint32_t msecs;
287
288
msecs = sec * 1000 + usec / 1000;
289
wlsc_compositor_finish_frame(compositor, msecs);
290
}
291
292
static void
293
on_drm_input(int fd, uint32_t mask, void *data)
294
{
295
drmEventContext evctx;
296
297
memset(&evctx, 0, sizeof evctx);
298
evctx.version = DRM_EVENT_CONTEXT_VERSION;
299
evctx.page_flip_handler = page_flip_handler;
300
drmHandleEvent(fd, &evctx);
301
}
302
303
static int
304
init_egl(struct drm_compositor *ec, struct udev_device *device)
305
{
306
EGLint major, minor;
307
const char *extensions, *filename;
308
int fd;
309
static const EGLint context_attribs[] = {
310
EGL_CONTEXT_CLIENT_VERSION, 2,
311
EGL_NONE
312
};
313
314
filename = udev_device_get_devnode(device);
315
fd = open(filename, O_RDWR);
316
if (fd < 0) {
317
/* Probably permissions error */
318
fprintf(stderr, "couldn't open %s, skipping\n",
319
udev_device_get_devnode(device));
320
return -1;
321
}
322
323
wlsc_drm_init(&ec->base, fd, filename);
324
325
ec->base.display = eglGetDRMDisplayMESA(ec->base.drm.fd);
326
if (ec->base.display == NULL) {
327
fprintf(stderr, "failed to create display\n");
328
return -1;
329
}
330
331
if (!eglInitialize(ec->base.display, &major, &minor)) {
332
fprintf(stderr, "failed to initialize display\n");
333
return -1;
334
}
335
336
extensions = eglQueryString(ec->base.display, EGL_EXTENSIONS);
337
if (!strstr(extensions, "EGL_KHR_surfaceless_opengl")) {
338
fprintf(stderr, "EGL_KHR_surfaceless_opengl not available\n");
339
return -1;
340
}
341
342
if (!eglBindAPI(EGL_OPENGL_ES_API)) {
343
fprintf(stderr, "failed to bind api EGL_OPENGL_ES_API\n");
344
return -1;
345
}
346
347
ec->base.context = eglCreateContext(ec->base.display, NULL,
348
EGL_NO_CONTEXT, context_attribs);
349
if (ec->base.context == NULL) {
350
fprintf(stderr, "failed to create context\n");
351
return -1;
352
}
353
354
if (!eglMakeCurrent(ec->base.display, EGL_NO_SURFACE,
355
EGL_NO_SURFACE, ec->base.context)) {
356
fprintf(stderr, "failed to make context current\n");
357
return -1;
358
}
359
360
return 0;
361
}
362
363
static drmModeModeInfo builtin_1024x768 = {
364
63500, /* clock */
365
1024, 1072, 1176, 1328, 0,
366
768, 771, 775, 798, 0,
367
59920,
368
DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC,
369
0,
370
"1024x768"
371
};
372
373
static int
374
create_output_for_connector(struct drm_compositor *ec,
375
drmModeRes *resources,
376
drmModeConnector *connector)
377
{
378
struct drm_output *output;
379
drmModeEncoder *encoder;
380
drmModeModeInfo *mode;
381
int i, ret;
382
EGLint handle, stride, attribs[] = {
383
EGL_WIDTH, 0,
384
EGL_HEIGHT, 0,
385
EGL_DRM_BUFFER_FORMAT_MESA, EGL_DRM_BUFFER_FORMAT_ARGB32_MESA,
386
EGL_DRM_BUFFER_USE_MESA, EGL_DRM_BUFFER_USE_SCANOUT_MESA,
387
EGL_NONE
388
};
389
390
output = malloc(sizeof *output);
391
if (output == NULL)
392
return -1;
393
394
if (connector->count_modes > 0)
395
mode = &connector->modes[0];
396
else
397
mode = &builtin_1024x768;
398
399
encoder = drmModeGetEncoder(ec->base.drm.fd, connector->encoders[0]);
400
if (encoder == NULL) {
401
fprintf(stderr, "No encoder for connector.\n");
402
return -1;
403
}
404
405
for (i = 0; i < resources->count_crtcs; i++) {
406
if (encoder->possible_crtcs & (1 << i))
407
break;
408
}
409
if (i == resources->count_crtcs) {
410
fprintf(stderr, "No usable crtc for encoder.\n");
411
return -1;
412
}
413
414
memset(output, 0, sizeof *output);
415
wlsc_output_init(&output->base, &ec->base, 0, 0,
416
mode->hdisplay, mode->vdisplay);
417
418
output->crtc_id = resources->crtcs[i];
419
output->connector_id = connector->connector_id;
420
output->mode = *mode;
421
422
drmModeFreeEncoder(encoder);
423
424
glGenRenderbuffers(2, output->rbo);
425
for (i = 0; i < 2; i++) {
426
glBindRenderbuffer(GL_RENDERBUFFER, output->rbo[i]);
427
428
attribs[1] = output->base.width;
429
attribs[3] = output->base.height;
430
output->image[i] =
431
eglCreateDRMImageMESA(ec->base.display, attribs);
432
glEGLImageTargetRenderbufferStorageOES(GL_RENDERBUFFER,
433
output->image[i]);
434
eglExportDRMImageMESA(ec->base.display, output->image[i],
435
NULL, &handle, &stride);
436
437
ret = drmModeAddFB(ec->base.drm.fd,
438
output->base.width, output->base.height,
439
32, 32, stride, handle, &output->fb_id[i]);
440
if (ret) {
441
fprintf(stderr, "failed to add fb %d: %m\n", i);
442
return -1;
443
}
444
}
445
446
output->current = 0;
447
glFramebufferRenderbuffer(GL_FRAMEBUFFER,
448
GL_COLOR_ATTACHMENT0,
449
GL_RENDERBUFFER,
450
output->rbo[output->current]);
451
ret = drmModeSetCrtc(ec->base.drm.fd, output->crtc_id,
452
output->fb_id[output->current ^ 1], 0, 0,
453
&output->connector_id, 1, &output->mode);
454
if (ret) {
455
fprintf(stderr, "failed to set mode: %m\n");
456
return -1;
457
}
458
459
wl_list_insert(ec->base.output_list.prev, &output->base.link);
460
461
return 0;
462
}
463
464
static int
465
create_outputs(struct drm_compositor *ec, int option_connector)
466
{
467
drmModeConnector *connector;
468
drmModeRes *resources;
469
int i;
470
471
resources = drmModeGetResources(ec->base.drm.fd);
472
if (!resources) {
473
fprintf(stderr, "drmModeGetResources failed\n");
474
return -1;
475
}
476
477
for (i = 0; i < resources->count_connectors; i++) {
478
connector = drmModeGetConnector(ec->base.drm.fd, resources->connectors[i]);
479
if (connector == NULL)
480
continue;
481
482
if (connector->connection == DRM_MODE_CONNECTED &&
483
(option_connector == 0 ||
484
connector->connector_id == option_connector))
485
if (create_output_for_connector(ec, resources, connector) < 0)
486
return -1;
487
488
drmModeFreeConnector(connector);
489
}
490
491
if (wl_list_empty(&ec->base.output_list)) {
492
fprintf(stderr, "No currently active connector found.\n");
493
return -1;
494
}
495
496
drmModeFreeResources(resources);
497
498
return 0;
499
}
500
501
static void on_enter_vt(int signal_number, void *data)
502
{
503
struct drm_compositor *ec = data;
504
struct drm_output *output;
505
int ret;
506
507
ret = drmSetMaster(ec->base.drm.fd);
508
if (ret) {
509
fprintf(stderr, "failed to set drm master\n");
510
kill(0, SIGTERM);
511
return;
512
}
513
514
fprintf(stderr, "enter vt\n");
515
516
ioctl(ec->tty_fd, VT_RELDISP, VT_ACKACQ);
517
ret = ioctl(ec->tty_fd, KDSETMODE, KD_GRAPHICS);
518
if (ret)
519
fprintf(stderr, "failed to set KD_GRAPHICS mode on console: %m\n");
520
ec->vt_active = 1;
521
522
wl_list_for_each(output, &ec->base.output_list, base.link) {
523
ret = drmModeSetCrtc(ec->base.drm.fd, output->crtc_id,
524
output->fb_id[output->current ^ 1], 0, 0,
525
&output->connector_id, 1, &output->mode);
526
if (ret)
527
fprintf(stderr,
528
"failed to set mode for connector %d: %m\n",
529
output->connector_id);
530
}
531
}
532
533
static void on_leave_vt(int signal_number, void *data)
534
{
535
struct drm_compositor *ec = data;
536
int ret;
537
538
ret = drmDropMaster(ec->base.drm.fd);
539
if (ret) {
540
fprintf(stderr, "failed to drop drm master\n");
541
kill(0, SIGTERM);
542
return;
543
}
544
545
ioctl (ec->tty_fd, VT_RELDISP, 1);
546
ret = ioctl(ec->tty_fd, KDSETMODE, KD_TEXT);
547
if (ret)
548
fprintf(stderr, "failed to set KD_TEXT mode on console: %m\n");
549
ec->vt_active = 0;
550
}
551
552
static void
553
on_tty_input(int fd, uint32_t mask, void *data)
554
{
555
struct drm_compositor *ec = data;
556
557
/* Ignore input to tty. We get keyboard events from evdev
558
*/
559
tcflush(ec->tty_fd, TCIFLUSH);
560
}
561
562
static void on_term_signal(int signal_number, void *data)
563
{
564
struct drm_compositor *ec = data;
565
566
if (tcsetattr(ec->tty_fd, TCSANOW, &ec->terminal_attributes) < 0)
567
fprintf(stderr, "could not restore terminal to canonical mode\n");
568
569
exit(0);
570
}
571
572
static int setup_tty(struct drm_compositor *ec, struct wl_event_loop *loop)
573
{
574
struct termios raw_attributes;
575
struct vt_mode mode = { 0 };
576
int ret;
577
578
ec->tty_fd = open("/dev/tty0", O_RDWR | O_NOCTTY);
579
if (ec->tty_fd <= 0) {
580
fprintf(stderr, "failed to open active tty: %m\n");
581
return -1;
582
}
583
584
if (tcgetattr(ec->tty_fd, &ec->terminal_attributes) < 0) {
585
fprintf(stderr, "could not get terminal attributes: %m\n");
586
return -1;
587
}
588
589
/* Ignore control characters and disable echo */
590
raw_attributes = ec->terminal_attributes;
591
cfmakeraw(&raw_attributes);
592
593
/* Fix up line endings to be normal (cfmakeraw hoses them) */
594
raw_attributes.c_oflag |= OPOST | OCRNL;
595
596
if (tcsetattr(ec->tty_fd, TCSANOW, &raw_attributes) < 0)
597
fprintf(stderr, "could not put terminal into raw mode: %m\n");
598
599
ec->term_signal_source =
600
wl_event_loop_add_signal(loop, SIGTERM, on_term_signal, ec);
601
602
ec->tty_input_source =
603
wl_event_loop_add_fd(loop, ec->tty_fd,
604
WL_EVENT_READABLE, on_tty_input, ec);
605
606
ret = ioctl(ec->tty_fd, KDSETMODE, KD_GRAPHICS);
607
if (ret)
608
fprintf(stderr, "failed to set KD_GRAPHICS mode on tty: %m\n");
609
610
ec->vt_active = 1;
611
mode.mode = VT_PROCESS;
612
mode.relsig = SIGUSR1;
613
mode.acqsig = SIGUSR2;
614
if (!ioctl(ec->tty_fd, VT_SETMODE, &mode) < 0) {
615
fprintf(stderr, "failed to take control of vt handling\n");
616
}
617
618
ec->leave_vt_source =
619
wl_event_loop_add_signal(loop, SIGUSR1, on_leave_vt, ec);
620
ec->enter_vt_source =
621
wl_event_loop_add_signal(loop, SIGUSR2, on_enter_vt, ec);
622
623
return 0;
624
}
625
626
static int
627
drm_authenticate(struct wlsc_compositor *c, uint32_t id)
628
{
629
struct drm_compositor *ec = (struct drm_compositor *) c;
630
631
return drmAuthMagic(ec->base.drm.fd, id);
632
}
633
634
struct wlsc_compositor *
635
drm_compositor_create(struct wl_display *display, int connector)
636
{
637
struct drm_compositor *ec;
638
struct udev_enumerate *e;
639
struct udev_list_entry *entry;
640
struct udev_device *device;
641
const char *path;
642
struct wl_event_loop *loop;
643
644
ec = malloc(sizeof *ec);
645
if (ec == NULL)
646
return NULL;
647
648
memset(ec, 0, sizeof *ec);
649
ec->udev = udev_new();
650
if (ec->udev == NULL) {
651
fprintf(stderr, "failed to initialize udev context\n");
652
return NULL;
653
}
654
655
e = udev_enumerate_new(ec->udev);
656
udev_enumerate_add_match_subsystem(e, "drm");
657
udev_enumerate_add_match_property(e, "WAYLAND_SEAT", "1");
658
udev_enumerate_scan_devices(e);
659
device = NULL;
660
udev_list_entry_foreach(entry, udev_enumerate_get_list_entry(e)) {
661
path = udev_list_entry_get_name(entry);
662
device = udev_device_new_from_syspath(ec->udev, path);
663
break;
664
}
665
udev_enumerate_unref(e);
666
667
if (device == NULL) {
668
fprintf(stderr, "no drm device found\n");
669
return NULL;
670
}
671
672
ec->base.wl_display = display;
673
if (init_egl(ec, device) < 0) {
674
fprintf(stderr, "failed to initialize egl\n");
675
return NULL;
676
}
677
678
/* Can't init base class until we have a current egl context */
679
if (wlsc_compositor_init(&ec->base, display) < 0)
680
return NULL;
681
682
if (create_outputs(ec, connector) < 0) {
683
fprintf(stderr, "failed to create output for %s\n", path);
684
return NULL;
685
}
686
687
drm_input_create(ec);
688
689
loop = wl_display_get_event_loop(ec->base.wl_display);
690
ec->drm_source =
691
wl_event_loop_add_fd(loop, ec->base.drm.fd,
692
WL_EVENT_READABLE, on_drm_input, ec);
693
setup_tty(ec, loop);
694
ec->base.authenticate = drm_authenticate;
695
ec->base.present = drm_compositor_present;
696
ec->base.focus = 1;
697
698
return &ec->base;
699
}
Loggerhead is a web-based interface for Breezy
Version: 2.0.1