ARM: omap4: tuna: Add input event reader to sensor HAL

Change-Id: I34a4a4dea8b30b22046889246f164c3ea40ab2a4
Signed-off-by: Danke Xie <d.xie@sta.samsung.com>

1 files changed, 48 insertions, 0 deletions

diff --git a/libsensors/InputEventReader.h b/libsensors/InputEventReader.h
new file mode 100644
index 0000000..736cc17
--- /dev/null
+++ b/libsensors/InputEventReader.h
@@ -0,0 +1,48 @@
+/*
+ * Copyright (C) 2008 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.
+ */
+
+#ifndef ANDROID_INPUT_EVENT_READER_H
+#define ANDROID_INPUT_EVENT_READER_H
+
+#include <stdint.h>
+#include <errno.h>
+#include <sys/cdefs.h>
+#include <sys/types.h>
+
+/*****************************************************************************/
+
+struct input_event;
+
+class InputEventCircularReader
+{
+    struct input_event* const mBuffer;
+    struct input_event* const mBufferEnd;
+    struct input_event* mHead;
+    struct input_event* mCurr;
+    size_t mEvents;
+    size_t mFreeSpace;
+
+public:
+    InputEventCircularReader(size_t numEvents);
+    ~InputEventCircularReader();
+    ssize_t fill(int fd);
+    bool readEvent(int fd, input_event const** events);
+    void next();
+};
+
+/*****************************************************************************/
+
+#endif  /* ANDROID_INPUT_EVENT_READER_H */