From 343947abc8b7c126f966fd32a0b18bff6c2cecd1 Mon Sep 17 00:00:00 2001
From: Robert Shih <robertshih@google.com>
Date: Fri, 7 Feb 2014 16:59:35 -0800
Subject: Stagefright: added WebM muxer.

Change-Id: I50bbf9c6f089b205d5ecef1371bfdd2028b3b358
---
 media/libstagefright/webm/LinkedBlockingQueue.h | 79 +++++++++++++++++++++++++
 1 file changed, 79 insertions(+)
 create mode 100644 media/libstagefright/webm/LinkedBlockingQueue.h

(limited to 'media/libstagefright/webm/LinkedBlockingQueue.h')

diff --git a/media/libstagefright/webm/LinkedBlockingQueue.h b/media/libstagefright/webm/LinkedBlockingQueue.h
new file mode 100644
index 0000000..0b6a9a1
--- /dev/null
+++ b/media/libstagefright/webm/LinkedBlockingQueue.h
@@ -0,0 +1,79 @@
+/*
+ * Copyright (C) 2014 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 LINKEDBLOCKINGQUEUE_H_
+#define LINKEDBLOCKINGQUEUE_H_
+
+#include <utils/List.h>
+#include <utils/Mutex.h>
+#include <utils/Condition.h>
+
+namespace android {
+
+template<typename T>
+class LinkedBlockingQueue {
+    List<T> mList;
+    Mutex mLock;
+    Condition mContentAvailableCondition;
+
+    T front(bool remove) {
+        Mutex::Autolock autolock(mLock);
+        while (mList.empty()) {
+            mContentAvailableCondition.wait(mLock);
+        }
+        T e = *(mList.begin());
+        if (remove) {
+            mList.erase(mList.begin());
+        }
+        return e;
+    }
+
+    DISALLOW_EVIL_CONSTRUCTORS(LinkedBlockingQueue);
+
+public:
+    LinkedBlockingQueue() {
+    }
+
+    ~LinkedBlockingQueue() {
+    }
+
+    bool empty() {
+        Mutex::Autolock autolock(mLock);
+        return mList.empty();
+    }
+
+    void clear() {
+        Mutex::Autolock autolock(mLock);
+        mList.clear();
+    }
+
+    T peek() {
+        return front(false);
+    }
+
+    T take() {
+        return front(true);
+    }
+
+    void push(T e) {
+        Mutex::Autolock autolock(mLock);
+        mList.push_back(e);
+        mContentAvailableCondition.signal();
+    }
+};
+
+} /* namespace android */
+#endif /* LINKEDBLOCKINGQUEUE_H_ */
-- 
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