aboutsummaryrefslogtreecommitdiffstats
blob: 6de82a4a719f8f73a7e44161cb8038a36a8ab6a4 (plain) (blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
/*
 * DRM based mode setting test program
 * Copyright (C) 2013 Red Hat
 * Author: Rob Clark <robdclark@gmail.com>
 *
 * Permission is hereby granted, free of charge, to any person obtaining a
 * copy of this software and associated documentation files (the "Software"),
 * to deal in the Software without restriction, including without limitation
 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
 * and/or sell copies of the Software, and to permit persons to whom the
 * Software is furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
 * IN THE SOFTWARE.
 */

#ifdef HAVE_CONFIG_H
#include "config.h"
#endif

#include <assert.h>
#include <errno.h>
#include <stdio.h>
#include <stdlib.h>
#include <stdint.h>
#include <string.h>
#include <signal.h>
#include <sys/time.h>
#include <pthread.h>
#include <unistd.h>

#include "xf86drm.h"
#include "xf86drmMode.h"

#include "util/common.h"

#include "buffers.h"
#include "cursor.h"

struct cursor {
	int fd;
	uint32_t bo_handle;
	uint32_t crtc_id;
	uint32_t crtc_w, crtc_h;
	uint32_t w, h;

	/* current state */
	uint32_t enabled, x, y;
	int32_t dx, dy;
};

#define MAX_CURSORS 8
static struct cursor cursors[MAX_CURSORS];
static int ncursors;

static pthread_t cursor_thread;
static int cursor_running;

/*
 * Timer driven program loops through these steps to move/enable/disable
 * the cursor
 */

struct cursor_step {
	void (*run)(struct cursor *cursor, const struct cursor_step *step);
	uint32_t msec;
	uint32_t repeat;
	int arg;
};

static uint32_t indx, count;

static void set_cursor(struct cursor *cursor, const struct cursor_step *step)
{
	int enabled = (step->arg ^ count) & 0x1;
	uint32_t handle = 0;

	if (enabled)
		handle = cursor->bo_handle;

	cursor->enabled = enabled;

	drmModeSetCursor(cursor->fd, cursor->crtc_id, handle, cursor->w, cursor->h);
}

static void move_cursor(struct cursor *cursor, const struct cursor_step *step)
{
	int x = cursor->x;
	int y = cursor->y;

	if (!cursor->enabled)
		drmModeSetCursor(cursor->fd, cursor->crtc_id,
				cursor->bo_handle, cursor->w, cursor->h);

	/* calculate new cursor position: */
	x += cursor->dx * step->arg;
	y += cursor->dy * step->arg;

	if (x < 0) {
		x = 0;
		cursor->dx = 1;
	} else if (x > (int)cursor->crtc_w) {
		x = cursor->crtc_w - 1;
		cursor->dx = -1;
	}

	if (y < 0) {
		y = 0;
		cursor->dy = 1;
	} else if (y > (int)cursor->crtc_h) {
		y = cursor->crtc_h - 1;
		cursor->dy = -1;
	}

	cursor->x = x;
	cursor->y = y;

	drmModeMoveCursor(cursor->fd, cursor->crtc_id, x, y);
}

static const struct cursor_step steps[] = {
		{  set_cursor, 10,   0,  1 },  /* enable */
		{ move_cursor,  1, 100,  1 },
		{ move_cursor,  1,  10, 10 },
		{  set_cursor,  1, 100,  0 },  /* disable/enable loop */
		{ move_cursor,  1,  10, 10 },
		{ move_cursor,  9, 100,  1 },
		{ move_cursor, 11, 100,  5 },
		{  set_cursor, 17,  10,  0 },  /* disable/enable loop */
		{ move_cursor,  9, 100,  1 },
		{  set_cursor, 13,  10,  0 },  /* disable/enable loop */
		{ move_cursor,  9, 100,  1 },
		{  set_cursor, 13,  10,  0 },  /* disable/enable loop */
		{  set_cursor, 10,   0,  0 },  /* disable */
};

static void *cursor_thread_func(void *data)
{
	while (cursor_running) {
		const struct cursor_step *step = &steps[indx % ARRAY_SIZE(steps)];
		int i;

		for (i = 0; i < ncursors; i++) {
			struct cursor *cursor = &cursors[i];
			step->run(cursor, step);
		}

		/* iterate to next count/step: */
		if (count < step->repeat) {
			count++;
		} else {
			count = 0;
			indx++;
		}

		usleep(1000 * step->msec);
	}

	return NULL;
}

int cursor_init(int fd, uint32_t bo_handle, uint32_t crtc_id,
		uint32_t crtc_w, uint32_t crtc_h, uint32_t w, uint32_t h)
{
	struct cursor *cursor = &cursors[ncursors];

	assert(ncursors < MAX_CURSORS);

	cursor->fd = fd;
	cursor->bo_handle = bo_handle;
	cursor->crtc_id = crtc_id;
	cursor->crtc_w = crtc_w;
	cursor->crtc_h = crtc_h;
	cursor->w = w;
	cursor->h = h;

	cursor->enabled = 0;
	cursor->x = w/2;
	cursor->y = h/2;
	cursor->dx = 1;
	cursor->dy = 1;

	ncursors++;

	return 0;
}

int cursor_start(void)
{
	cursor_running = 1;
	pthread_create(&cursor_thread, NULL, cursor_thread_func, NULL);
	printf("starting cursor\n");
	return 0;
}

int cursor_stop(void)
{
	cursor_running = 0;
	pthread_join(cursor_thread, NULL);
	printf("cursor stopped\n");
	return 0;
}