8b06200802
BUG=1662 R=henrike@webrtc.org Review URL: https://webrtc-codereview.appspot.com/1786004 git-svn-id: http://webrtc.googlecode.com/svn/trunk@4336 4adac7df-926f-26a2-2b94-8c16560cd09d
62 lines
2.0 KiB
C++
62 lines
2.0 KiB
C++
/*
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* Copyright (c) 2011 The WebRTC project authors. All Rights Reserved.
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*
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* Use of this source code is governed by a BSD-style license
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* that can be found in the LICENSE file in the root of the source
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* tree. An additional intellectual property rights grant can be found
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* in the file PATENTS. All contributing project authors may
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* be found in the AUTHORS file in the root of the source tree.
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*/
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#ifndef WEBRTC_MODULES_UTILITY_SOURCE_VIDEO_FRAMES_QUEUE_H_
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#define WEBRTC_MODULES_UTILITY_SOURCE_VIDEO_FRAMES_QUEUE_H_
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#ifdef WEBRTC_MODULE_UTILITY_VIDEO
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#include "webrtc/common_video/interface/i420_video_frame.h"
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#include "webrtc/engine_configurations.h"
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#include "webrtc/system_wrappers/interface/list_wrapper.h"
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#include "webrtc/typedefs.h"
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namespace webrtc {
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class VideoFramesQueue {
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public:
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VideoFramesQueue();
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~VideoFramesQueue();
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// Put newFrame (last) in the queue.
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int32_t AddFrame(const I420VideoFrame& newFrame);
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// Return the most current frame. I.e. the frame with the highest
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// VideoFrame::RenderTimeMs() that is lower than
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// TickTime::MillisecondTimestamp().
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I420VideoFrame* FrameToRecord();
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// Set the render delay estimate to renderDelay ms.
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int32_t SetRenderDelay(uint32_t renderDelay);
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protected:
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// Make ptrOldFrame available for re-use. I.e. put it in the empty frames
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// queue.
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int32_t ReturnFrame(I420VideoFrame* ptrOldFrame);
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private:
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// Don't allow the buffer to expand beyond KMaxNumberOfFrames VideoFrames.
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// 300 frames correspond to 10 seconds worth of frames at 30 fps.
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enum {KMaxNumberOfFrames = 300};
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// List of VideoFrame pointers. The list is sorted in the order of when the
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// VideoFrame was inserted into the list. The first VideoFrame in the list
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// was inserted first.
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ListWrapper _incomingFrames;
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// A list of frames that are free to be re-used.
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ListWrapper _emptyFrames;
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// Estimated render delay.
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uint32_t _renderDelayMs;
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};
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} // namespace webrtc
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#endif // WEBRTC_MODULE_UTILITY_VIDEO
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#endif // WEBRTC_MODULES_UTILITY_SOURCE_VIDEO_FRAMES_QUEUE_H_
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