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 COMMON_VIDEO_VIDEO_RENDER_FRAMES_H_ 12 #define COMMON_VIDEO_VIDEO_RENDER_FRAMES_H_ 13 14 #include <stddef.h> 15 #include <stdint.h> 16 17 #include <list> 18 19 #include "absl/types/optional.h" 20 #include "api/video/video_frame.h" 21 22 namespace webrtc { 23 24 // Class definitions 25 class VideoRenderFrames { 26 public: 27 explicit VideoRenderFrames(uint32_t render_delay_ms); 28 VideoRenderFrames(const VideoRenderFrames&) = delete; 29 ~VideoRenderFrames(); 30 31 // Add a frame to the render queue 32 int32_t AddFrame(VideoFrame&& new_frame); 33 34 // Get a frame for rendering, or false if it's not time to render. 35 absl::optional<VideoFrame> FrameToRender(); 36 37 // Returns the number of ms to next frame to render 38 uint32_t TimeToNextFrameRelease(); 39 40 bool HasPendingFrames() const; 41 42 private: 43 // Sorted list with framed to be rendered, oldest first. 44 std::list<VideoFrame> incoming_frames_; 45 46 // Estimated delay from a frame is released until it's rendered. 47 const uint32_t render_delay_ms_; 48 49 int64_t last_render_time_ms_ = 0; 50 size_t frames_dropped_ = 0; 51 }; 52 53 } // namespace webrtc 54 55 #endif // COMMON_VIDEO_VIDEO_RENDER_FRAMES_H_ 56