| /* |
| * Copyright (c) 2015 The WebRTC project authors. All Rights Reserved. |
| * |
| * Use of this source code is governed by a BSD-style license |
| * that can be found in the LICENSE file in the root of the source |
| * tree. An additional intellectual property rights grant can be found |
| * in the file PATENTS. All contributing project authors may |
| * be found in the AUTHORS file in the root of the source tree. |
| */ |
| |
| #ifndef WEBRTC_COMMON_VIDEO_INTERFACE_I420_BUFFER_POOL_H_ |
| #define WEBRTC_COMMON_VIDEO_INTERFACE_I420_BUFFER_POOL_H_ |
| |
| #include <list> |
| |
| #include "webrtc/base/thread_checker.h" |
| #include "webrtc/common_video/interface/video_frame_buffer.h" |
| |
| namespace webrtc { |
| |
| // Simple buffer pool to avoid unnecessary allocations of I420Buffer objects. |
| // The pool manages the memory of the I420Buffer returned from CreateBuffer. |
| // When the I420Buffer is destructed, the memory is returned to the pool for use |
| // by subsequent calls to CreateBuffer. If the resolution passed to CreateBuffer |
| // changes, old buffers will be purged from the pool. |
| class I420BufferPool { |
| public: |
| I420BufferPool(); |
| // Returns a buffer from the pool, or creates a new buffer if no suitable |
| // buffer exists in the pool. |
| rtc::scoped_refptr<VideoFrameBuffer> CreateBuffer(int width, int height); |
| // Clears buffers_ and detaches the thread checker so that it can be reused |
| // later from another thread. |
| void Release(); |
| |
| private: |
| rtc::ThreadChecker thread_checker_; |
| std::list<rtc::scoped_refptr<I420Buffer>> buffers_; |
| }; |
| |
| } // namespace webrtc |
| |
| #endif // WEBRTC_COMMON_VIDEO_INTERFACE_I420_BUFFER_POOL_H_ |