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use non-blocking read and ignore EV_SYN

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Vincent Wei
2020-11-10 20:34:47 +08:00
parent b47d207bd2
commit 7530c4b5bd
1 changed files with 11 additions and 12 deletions
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src/ial/singletouchkey.c
+11 -12
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@@ -74,20 +74,19 @@ static int get_touch_data (short *x, short *y, short *button)
while (read (sg_tp_event_fd, &data, sizeof (data)) == sizeof (data)) {
/* return for end of event data sequece. */
/* do nothing for EV_SYN due to non-blocking read.
if (data.type == EV_SYN) {
switch (data.code) {
case SYN_REPORT:
case SYN_MT_REPORT:
break;
case SYN_DROPPED:
default:
_WRN_PRINTF ("unknow event code for EV_SYN event: 0x%x, 0x%x\n", data.code, data.value);
if (data.code == SYN_REPORT) {
return 0;
}
else if (data.code == SYN_MT_REPORT) {
continue;
}
else {
return -1;
}
return 0;
}
*/
if (data.type == EV_KEY) {
switch (data.code) {
@@ -189,7 +188,7 @@ static int wait_event (int which, int maxfd, fd_set *in, fd_set *out, fd_set *ex
if (FD_ISSET (sg_tp_event_fd, in)) {
retvalue |= IAL_MOUSEEVENT;
}
else if (sg_key_event_fd >= 0 && FD_ISSET (sg_key_event_fd, in)) {
if (sg_key_event_fd >= 0 && FD_ISSET (sg_key_event_fd, in)) {
retvalue |= IAL_KEYEVENT;
}
}
@@ -215,7 +214,7 @@ BOOL ial_InitSingleTouchKey (INPUT* input, const char* mdev, const char* mtype)
return FALSE;
}
sg_tp_event_fd = open (touch_dev, O_RDONLY /*| O_NONBLOCK*/);
sg_tp_event_fd = open (touch_dev, O_RDONLY | O_NONBLOCK);
if (sg_tp_event_fd < 0) {
_WRN_PRINTF ("failed when opening touch event device: %s\n", touch_dev);
return FALSE;