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/*
* DRM based vblank test program
* Copyright 2008 Tungsten Graphics
* Jakob Bornecrantz <jakob@tungstengraphics.com>
* Copyright 2008 Intel Corporation
* Jesse Barnes <jesse.barnes@intel.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.
*/
#include <assert.h>
#include <stdio.h>
#include <stdlib.h>
#include <stdint.h>
#include <unistd.h>
#include <string.h>
#include <errno.h>
#include <poll.h>
#include <sys/time.h>
#if HAVE_SYS_SELECT_H
#include <sys/select.h>
#endif
#include "xf86drm.h"
#include "xf86drmMode.h"
#include "util/common.h"
#include "util/kms.h"
extern char *optarg;
extern int optind, opterr, optopt;
static char optstr[] = "D:M:s";
int secondary = 0;
struct vbl_info {
unsigned int vbl_count;
struct timeval start;
};
static void vblank_handler(int fd, unsigned int frame, unsigned int sec,
unsigned int usec, void *data)
{
drmVBlank vbl;
struct timeval end;
struct vbl_info *info = data;
double t;
vbl.request.type = DRM_VBLANK_RELATIVE | DRM_VBLANK_EVENT;
if (secondary)
vbl.request.type |= DRM_VBLANK_SECONDARY;
vbl.request.sequence = 1;
vbl.request.signal = (unsigned long)data;
drmWaitVBlank(fd, &vbl);
info->vbl_count++;
if (info->vbl_count == 60) {
gettimeofday(&end, NULL);
t = end.tv_sec + end.tv_usec * 1e-6 -
(info->start.tv_sec + info->start.tv_usec * 1e-6);
fprintf(stderr, "freq: %.02fHz\n", info->vbl_count / t);
info->vbl_count = 0;
info->start = end;
}
}
static void usage(char *name)
{
fprintf(stderr, "usage: %s [-DMs]\n", name);
fprintf(stderr, "\n");
fprintf(stderr, "options:\n");
fprintf(stderr, " -D DEVICE open the given device\n");
fprintf(stderr, " -M MODULE open the given module\n");
fprintf(stderr, " -s use secondary pipe\n");
exit(0);
}
int main(int argc, char **argv)
{
const char *device = NULL, *module = NULL;
int c, fd, ret;
drmVBlank vbl;
drmEventContext evctx;
struct vbl_info handler_info;
opterr = 0;
while ((c = getopt(argc, argv, optstr)) != -1) {
switch (c) {
case 'D':
device = optarg;
break;
case 'M':
module = optarg;
break;
case 's':
secondary = 1;
break;
default:
usage(argv[0]);
break;
}
}
fd = util_open(device, module);
if (fd < 0)
return 1;
/* Get current count first */
vbl.request.type = DRM_VBLANK_RELATIVE;
if (secondary)
vbl.request.type |= DRM_VBLANK_SECONDARY;
vbl.request.sequence = 0;
ret = drmWaitVBlank(fd, &vbl);
if (ret != 0) {
printf("drmWaitVBlank (relative) failed ret: %i\n", ret);
return -1;
}
printf("starting count: %d\n", vbl.request.sequence);
handler_info.vbl_count = 0;
gettimeofday(&handler_info.start, NULL);
/* Queue an event for frame + 1 */
vbl.request.type = DRM_VBLANK_RELATIVE | DRM_VBLANK_EVENT;
if (secondary)
vbl.request.type |= DRM_VBLANK_SECONDARY;
vbl.request.sequence = 1;
vbl.request.signal = (unsigned long)&handler_info;
ret = drmWaitVBlank(fd, &vbl);
if (ret != 0) {
printf("drmWaitVBlank (relative, event) failed ret: %i\n", ret);
return -1;
}
/* Set up our event handler */
memset(&evctx, 0, sizeof evctx);
evctx.version = DRM_EVENT_CONTEXT_VERSION;
evctx.vblank_handler = vblank_handler;
evctx.page_flip_handler = NULL;
/* Poll for events */
while (1) {
struct timeval timeout = { .tv_sec = 3, .tv_usec = 0 };
fd_set fds;
FD_ZERO(&fds);
FD_SET(0, &fds);
FD_SET(fd, &fds);
ret = select(fd + 1, &fds, NULL, NULL, &timeout);
if (ret <= 0) {
fprintf(stderr, "select timed out or error (ret %d)\n",
ret);
continue;
} else if (FD_ISSET(0, &fds)) {
break;
}
ret = drmHandleEvent(fd, &evctx);
if (ret != 0) {
printf("drmHandleEvent failed: %i\n", ret);
return -1;
}
}
return 0;
}
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