Index: media/base/android/access_unit_queue.h |
diff --git a/media/base/android/access_unit_queue.h b/media/base/android/access_unit_queue.h |
deleted file mode 100644 |
index ff6ee0d14de7a1d956af3eaab9485d31454aa8b1..0000000000000000000000000000000000000000 |
--- a/media/base/android/access_unit_queue.h |
+++ /dev/null |
@@ -1,112 +0,0 @@ |
-// 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_ACCESS_UNIT_QUEUE_H_ |
-#define MEDIA_BASE_ANDROID_ACCESS_UNIT_QUEUE_H_ |
- |
-#include <stddef.h> |
- |
-#include <list> |
- |
-#include "base/macros.h" |
-#include "base/synchronization/lock.h" |
-#include "media/base/android/demuxer_stream_player_params.h" |
- |
-namespace media { |
- |
-// The queue of incoming data for MediaCodecDecoder. |
-// |
-// The data comes in the form of access units. Each access unit has a type. |
-// If the type is |kConfigChanged| the access unit itself has no data, but |
-// is accompanied with DemuxerConfigs. |
-// The queue should be accessed on the Media thread that puts the incoming data |
-// in and on the Decoder thread that gets the next access unit and eventually |
-// removes it from the queue. |
-class AccessUnitQueue { |
- public: |
- // Information about the queue state and the access unit at the front. |
- struct Info { |
- // The unit at front. Null if the queue is empty. This pointer may be |
- // invalidated by the next Advance() or Flush() call and must be used |
- // before the caller calls these methods. The |front_unit| is owned by |
- // the queue itself - never delete it through this pointer. |
- const AccessUnit* front_unit; |
- |
- // Configs for the front unit if it is |kConfigChanged|, null otherwise. |
- // The same validity rule applies: this pointer is only valid till the next |
- // Advance() or Flush() call, and |configs| is owned by the queue itself. |
- const DemuxerConfigs* configs; |
- |
- // Number of access units in the queue. |
- int length; |
- |
- // Number of access units in the queue excluding config units. |
- int data_length; |
- |
- // Whether End Of Stream has been added to the queue. Cleared by Flush(). |
- bool has_eos; |
- |
- Info() : front_unit(nullptr), configs(nullptr), length(0), has_eos(false) {} |
- }; |
- |
- AccessUnitQueue(); |
- ~AccessUnitQueue(); |
- |
- // Appends the incoming data to the queue. |
- void PushBack(const DemuxerData& frames); |
- |
- // Advances the front position to next unit. Logically the preceding units |
- // do not exist, but they can be physically removed later. |
- void Advance(); |
- |
- // Clears the queue, resets the length to zero and clears EOS condition. |
- void Flush(); |
- |
- // Looks back for the first key frame starting from the current one (i.e. |
- // the look-back is inclusive of the current front position). |
- // If the key frame exists, sets the current access unit to it and returns |
- // true. Otherwise returns false. |
- bool RewindToLastKeyFrame(); |
- |
- // Returns the information about the queue. |
- // The result is invalidated by the following Advance() or Flush call. |
- // There must be only one |Info| consumer at a time. |
- Info GetInfo() const; |
- |
- // For unit tests only. These methods are not thread safe. |
- size_t NumChunksForTesting() const { return chunks_.size(); } |
- void SetHistorySizeForTesting(size_t number_of_history_chunks); |
- |
- private: |
- // Returns the total number of access units (total_length) and the number of |
- // units excluding configiration change requests (data_length). The number is |
- // calculated between the current one and the end, incuding the current. |
- // Logically these are units that have not been consumed. |
- void GetUnconsumedAccessUnitLength(int* total_length, int* data_length) const; |
- |
- // The queue of data chunks. It owns the chunks. |
- typedef std::list<DemuxerData*> DataChunkQueue; |
- DataChunkQueue chunks_; |
- |
- // The chunk that contains the current access unit. |
- DataChunkQueue::iterator current_chunk_; |
- |
- // Index of the current access unit within the current chunk. |
- size_t index_in_chunk_; |
- |
- // Amount of chunks before the |current_chunk_| that's kept for history. |
- size_t history_chunks_amount_; |
- |
- // Indicates that a unit with End Of Stream flag has been appended. |
- bool has_eos_; |
- |
- // The lock protects all fields together. |
- mutable base::Lock lock_; |
- |
- DISALLOW_COPY_AND_ASSIGN(AccessUnitQueue); |
-}; |
- |
-} // namespace media |
- |
-#endif // MEDIA_BASE_ANDROID_ACCESS_UNIT_QUEUE_H_ |