From 23580ca27a0a8109312fdd36cc363ad1f4719889 Mon Sep 17 00:00:00 2001
From: The Android Open Source Project <initial-contribution@android.com>
Date: Tue, 21 Oct 2008 07:00:00 -0700
Subject: Initial Contribution

---
 minui/events.c | 82 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 82 insertions(+)
 create mode 100644 minui/events.c

(limited to 'minui/events.c')

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;
+}
-- 
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