Initial checkin of "foundation" library for future stagefright development.

Change-Id: I11714dcaa647d0437a13e4c5b953b35e712da8f3

1 files changed, 75 insertions, 0 deletions

diff --git a/include/media/stagefright/foundation/ALooper.h b/include/media/stagefright/foundation/ALooper.h
new file mode 100644
index 0000000..69ad837
--- /dev/null
+++ b/include/media/stagefright/foundation/ALooper.h
@@ -0,0 +1,75 @@
+/*
+ * Copyright (C) 2010 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 A_LOOPER_H_
+
+#define A_LOOPER_H_
+
+#include <media/stagefright/foundation/ABase.h>
+#include <utils/Errors.h>
+#include <utils/KeyedVector.h>
+#include <utils/List.h>
+#include <utils/RefBase.h>
+#include <utils/threads.h>
+
+namespace android {
+
+struct AHandler;
+struct AMessage;
+
+struct ALooper : public RefBase {
+    typedef int32_t event_id;
+    typedef int32_t handler_id;
+
+    ALooper();
+
+    handler_id registerHandler(const sp<AHandler> &handler);
+    void unregisterHandler(handler_id handlerID);
+
+    status_t start(bool runOnCallingThread = false);
+    status_t stop();
+
+    static int64_t GetNowUs();
+
+protected:
+    virtual ~ALooper();
+
+private:
+    friend struct ALooperRoster;
+
+    struct Event {
+        int64_t mWhenUs;
+        sp<AMessage> mMessage;
+    };
+
+    Mutex mLock;
+    Condition mQueueChangedCondition;
+
+    List<Event> mEventQueue;
+
+    struct LooperThread;
+    sp<LooperThread> mThread;
+    bool mRunningLocally;
+
+    void post(const sp<AMessage> &msg, int64_t delayUs);
+    bool loop();
+
+    DISALLOW_EVIL_CONSTRUCTORS(ALooper);
+};
+
+}  // namespace android
+
+#endif  // A_LOOPER_H_