| /* |
| * Copyright (c) 2011 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_MODULES_UTILITY_SOURCE_VIDEO_FRAMES_QUEUE_H_ |
| #define WEBRTC_MODULES_UTILITY_SOURCE_VIDEO_FRAMES_QUEUE_H_ |
| |
| #ifdef WEBRTC_MODULE_UTILITY_VIDEO |
| |
| #include <list> |
| |
| #include "webrtc/common_video/interface/i420_video_frame.h" |
| #include "webrtc/engine_configurations.h" |
| #include "webrtc/typedefs.h" |
| |
| namespace webrtc { |
| |
| class VideoFramesQueue { |
| public: |
| VideoFramesQueue(); |
| ~VideoFramesQueue(); |
| |
| // Put newFrame (last) in the queue. |
| int32_t AddFrame(const I420VideoFrame& newFrame); |
| |
| // Return the most current frame. I.e. the frame with the highest |
| // VideoFrame::RenderTimeMs() that is lower than |
| // TickTime::MillisecondTimestamp(). |
| I420VideoFrame* FrameToRecord(); |
| |
| // Set the render delay estimate to renderDelay ms. |
| int32_t SetRenderDelay(uint32_t renderDelay); |
| |
| protected: |
| // Make ptrOldFrame available for re-use. I.e. put it in the empty frames |
| // queue. |
| int32_t ReturnFrame(I420VideoFrame* ptrOldFrame); |
| |
| private: |
| typedef std::list<I420VideoFrame*> FrameList; |
| // Don't allow the buffer to expand beyond KMaxNumberOfFrames VideoFrames. |
| // 300 frames correspond to 10 seconds worth of frames at 30 fps. |
| enum {KMaxNumberOfFrames = 300}; |
| |
| // List of VideoFrame pointers. The list is sorted in the order of when the |
| // VideoFrame was inserted into the list. The first VideoFrame in the list |
| // was inserted first. |
| FrameList _incomingFrames; |
| // A list of frames that are free to be re-used. |
| FrameList _emptyFrames; |
| |
| // Estimated render delay. |
| uint32_t _renderDelayMs; |
| }; |
| } // namespace webrtc |
| #endif // WEBRTC_MODULE_UTILITY_VIDEO |
| #endif // WEBRTC_MODULES_UTILITY_SOURCE_VIDEO_FRAMES_QUEUE_H_ |