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authorThe Android Open Source Project <initial-contribution@android.com>2009-03-04 04:28:42 +0100
committerThe Android Open Source Project <initial-contribution@android.com>2009-03-04 04:28:42 +0100
commitc24a8e688a6312764254beac2b2520bb0c5e998d (patch)
tree7df23711566b358047301d8413ee399105546e8b /minui/events.c
parentauto import from //depot/cupcake/@135843 (diff)
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Diffstat (limited to '')
-rw-r--r--minui/events.c82
1 files changed, 82 insertions, 0 deletions
diff --git a/minui/events.c b/minui/events.c
new file mode 100644
index 000000000..3aed2a860
--- /dev/null
+++ b/minui/events.c
@@ -0,0 +1,82 @@
+/*
+ * Copyright (C) 2007 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <fcntl.h>
+#include <dirent.h>
+#include <sys/poll.h>
+
+#include <linux/input.h>
+
+#include "minui.h"
+
+#define MAX_DEVICES 16
+
+static struct pollfd ev_fds[MAX_DEVICES];
+static unsigned ev_count = 0;
+
+int ev_init(void)
+{
+ DIR *dir;
+ struct dirent *de;
+ int fd;
+
+ dir = opendir("/dev/input");
+ if(dir != 0) {
+ while((de = readdir(dir))) {
+// fprintf(stderr,"/dev/input/%s\n", de->d_name);
+ if(strncmp(de->d_name,"event",5)) continue;
+ fd = openat(dirfd(dir), de->d_name, O_RDONLY);
+ if(fd < 0) continue;
+
+ ev_fds[ev_count].fd = fd;
+ ev_fds[ev_count].events = POLLIN;
+ ev_count++;
+ if(ev_count == MAX_DEVICES) break;
+ }
+ }
+
+ return 0;
+}
+
+void ev_exit(void)
+{
+ while (ev_count > 0) {
+ close(ev_fds[--ev_count].fd);
+ }
+}
+
+int ev_get(struct input_event *ev, unsigned dont_wait)
+{
+ int r;
+ unsigned n;
+
+ do {
+ r = poll(ev_fds, ev_count, dont_wait ? 0 : -1);
+
+ if(r > 0) {
+ for(n = 0; n < ev_count; n++) {
+ if(ev_fds[n].revents & POLLIN) {
+ r = read(ev_fds[n].fd, ev, sizeof(*ev));
+ if(r == sizeof(*ev)) return 0;
+ }
+ }
+ }
+ } while(dont_wait == 0);
+
+ return -1;
+}