1 /* 2 * Copyright (c) 2015 The WebRTC project authors. All Rights Reserved. 3 * 4 * Use of this source code is governed by a BSD-style license 5 * that can be found in the LICENSE file in the root of the source 6 * tree. An additional intellectual property rights grant can be found 7 * in the file PATENTS. All contributing project authors may 8 * be found in the AUTHORS file in the root of the source tree. 9 */ 10 11 #ifndef WEBRTC_COMMON_VIDEO_INCLUDE_I420_BUFFER_POOL_H_ 12 #define WEBRTC_COMMON_VIDEO_INCLUDE_I420_BUFFER_POOL_H_ 13 14 #include <list> 15 16 #include "webrtc/base/thread_checker.h" 17 #include "webrtc/common_video/include/video_frame_buffer.h" 18 19 namespace webrtc { 20 21 // Simple buffer pool to avoid unnecessary allocations of I420Buffer objects. 22 // The pool manages the memory of the I420Buffer returned from CreateBuffer. 23 // When the I420Buffer is destructed, the memory is returned to the pool for use 24 // by subsequent calls to CreateBuffer. If the resolution passed to CreateBuffer 25 // changes, old buffers will be purged from the pool. 26 class I420BufferPool { 27 public: 28 I420BufferPool(); 29 // Returns a buffer from the pool, or creates a new buffer if no suitable 30 // buffer exists in the pool. 31 rtc::scoped_refptr<VideoFrameBuffer> CreateBuffer(int width, int height); 32 // Clears buffers_ and detaches the thread checker so that it can be reused 33 // later from another thread. 34 void Release(); 35 36 private: 37 rtc::ThreadChecker thread_checker_; 38 std::list<rtc::scoped_refptr<I420Buffer>> buffers_; 39 }; 40 41 } // namespace webrtc 42 43 #endif // WEBRTC_COMMON_VIDEO_INCLUDE_I420_BUFFER_POOL_H_ 44
