chromium/third_party/webrtc/common_video/include/video_frame_buffer_pool.h

/*
 *  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 COMMON_VIDEO_INCLUDE_VIDEO_FRAME_BUFFER_POOL_H_
#define COMMON_VIDEO_INCLUDE_VIDEO_FRAME_BUFFER_POOL_H_

#include <stddef.h>

#include <list>

#include "api/scoped_refptr.h"
#include "api/video/i010_buffer.h"
#include "api/video/i210_buffer.h"
#include "api/video/i410_buffer.h"
#include "api/video/i420_buffer.h"
#include "api/video/i422_buffer.h"
#include "api/video/i444_buffer.h"
#include "api/video/nv12_buffer.h"
#include "rtc_base/race_checker.h"

namespace webrtc {

// Simple buffer pool to avoid unnecessary allocations of video frame buffers.
// The pool manages the memory of the I420Buffer/NV12Buffer returned from
// Create(I420|NV12)Buffer. When the buffer is destructed, the memory is
// returned to the pool for use by subsequent calls to Create(I420|NV12)Buffer.
// If the resolution passed to Create(I420|NV12)Buffer changes or requested
// pixel format changes, old buffers will be purged from the pool.
// Note that Create(I420|NV12)Buffer will crash if more than
// kMaxNumberOfFramesBeforeCrash are created. This is to prevent memory leaks
// where frames are not returned.
class VideoFrameBufferPool { … };

}  // namespace webrtc

#endif  // COMMON_VIDEO_INCLUDE_VIDEO_FRAME_BUFFER_POOL_H_