Implementation of MediaCodecPlayer stage 1

media/base/android/au_queue.h

+// Copyright 2015 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef MEDIA_BASE_ANDROID_AU_QUEUE_H_
+#define MEDIA_BASE_ANDROID_AU_QUEUE_H_
+
+#include <deque>
+
+#include "base/macros.h"
+#include "base/synchronization/lock.h"
+#include "media/base/android/demuxer_stream_player_params.h"
+
+namespace media {
+
+class AUQueue {

[qinmin, 2015/05/12 23:58:23]

I prefer this to be called AccessUnitQueue, rather than AUQueue. Which is not
straightforward. Same to the file name.

[Tima Vaisburd, 2015/05/13 22:51:47]

Renamed.

+ public:
+  struct Info {
+    const AccessUnit* front_unit;
+    const DemuxerConfigs* configs;
+    int length;
+    bool has_eos;
+
+    Info()
+        : front_unit(nullptr), configs(nullptr), length(0), has_eos(false) {}
+  };
+
+  AUQueue();
+  virtual ~AUQueue();
+
+  void PushBack(const DemuxerData& frames);
+  void PopFront();
+  void Flush();
+
+  // Looks for the first key frame and if it exists,
+  // removes prior frames an returns true. If it does not

[qinmin, 2015/05/12 23:58:23]

nit: s/an/and/

[Tima Vaisburd, 2015/05/13 22:51:47]

Done, although this method does the wrong thing, as you pointed out.

+  // exist returns false.
+  bool SkipToKeyFrame();
+
+  void GetInfo(Info* info) const;
+
+  bool HasEOS() const;
+  int Length() const;
+
+ private:
+  DISALLOW_COPY_AND_ASSIGN(AUQueue);

[qinmin, 2015/05/12 23:58:23]

this should stay at the end of the class declaration.

[Tima Vaisburd, 2015/05/13 22:51:47]

Done.

+
+  std::deque<AccessUnit> access_units_;
+  std::deque<DemuxerConfigs> demuxer_configs_;
+  bool has_eos_;
+
+  mutable base::Lock lock_;
+

[qinmin, 2015/05/12 23:58:23]

nit: extra line

[Tima Vaisburd, 2015/05/13 22:51:47]

Removed.

+};
+
+}  // namespace media
+
+// For logging
+std::ostream& operator<<(std::ostream& os, const media::AccessUnit& au);
+
+#endif  // MEDIA_BASE_ANDROID_AU_QUEUE_H_