1 /* 2 * Copyright (c) 2012 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_VIDEO_RENDER_FRAMES_H_ 12 #define WEBRTC_COMMON_VIDEO_VIDEO_RENDER_FRAMES_H_ 13 14 #include <stdint.h> 15 16 #include <list> 17 18 #include "webrtc/video_frame.h" 19 20 namespace webrtc { 21 22 // Class definitions 23 class VideoRenderFrames { 24 public: 25 VideoRenderFrames(); 26 27 // Add a frame to the render queue 28 int32_t AddFrame(const VideoFrame& new_frame); 29 30 // Get a frame for rendering, or a zero-size frame if it's not time to render. 31 VideoFrame FrameToRender(); 32 33 // Releases all frames 34 int32_t ReleaseAllFrames(); 35 36 // Returns the number of ms to next frame to render 37 uint32_t TimeToNextFrameRelease(); 38 39 // Sets estimates delay in renderer 40 int32_t SetRenderDelay(const uint32_t render_delay); 41 42 private: 43 // 10 seconds for 30 fps. 44 enum { KMaxNumberOfFrames = 300 }; 45 // Don't render frames with timestamp older than 500ms from now. 46 enum { KOldRenderTimestampMS = 500 }; 47 // Don't render frames with timestamp more than 10s into the future. 48 enum { KFutureRenderTimestampMS = 10000 }; 49 50 // Sorted list with framed to be rendered, oldest first. 51 std::list<VideoFrame> incoming_frames_; 52 53 // Estimated delay from a frame is released until it's rendered. 54 uint32_t render_delay_ms_; 55 }; 56 57 } // namespace webrtc 58 59 #endif // WEBRTC_COMMON_VIDEO_VIDEO_RENDER_FRAMES_H_ 60
