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_MODULES_VIDEO_RENDER_MAIN_SOURCE_VIDEO_RENDER_FRAMES_H_ // NOLINT 12 #define WEBRTC_MODULES_VIDEO_RENDER_MAIN_SOURCE_VIDEO_RENDER_FRAMES_H_ // NOLINT 13 14 #include <list> 15 16 #include "webrtc/modules/video_render/include/video_render.h" 17 18 namespace webrtc { 19 20 // Class definitions 21 class VideoRenderFrames { 22 public: 23 VideoRenderFrames(); 24 ~VideoRenderFrames(); 25 26 // Add a frame to the render queue 27 int32_t AddFrame(I420VideoFrame* new_frame); 28 29 // Get a frame for rendering, if it's time to render. 30 I420VideoFrame* FrameToRender(); 31 32 // Return an old frame 33 int32_t ReturnFrame(I420VideoFrame* old_frame); 34 35 // Releases all frames 36 int32_t ReleaseAllFrames(); 37 38 // Returns the number of ms to next frame to render 39 uint32_t TimeToNextFrameRelease(); 40 41 // Sets estimates delay in renderer 42 int32_t SetRenderDelay(const uint32_t render_delay); 43 44 private: 45 typedef std::list<I420VideoFrame*> FrameList; 46 47 // 10 seconds for 30 fps. 48 enum { KMaxNumberOfFrames = 300 }; 49 // Don't render frames with timestamp older than 500ms from now. 50 enum { KOldRenderTimestampMS = 500 }; 51 // Don't render frames with timestamp more than 10s into the future. 52 enum { KFutureRenderTimestampMS = 10000 }; 53 54 // Sorted list with framed to be rendered, oldest first. 55 FrameList incoming_frames_; 56 // Empty frames. 57 FrameList empty_frames_; 58 59 // Estimated delay from a frame is released until it's rendered. 60 uint32_t render_delay_ms_; 61 }; 62 63 } // namespace webrtc 64 65 #endif // WEBRTC_MODULES_VIDEO_RENDER_MAIN_SOURCE_VIDEO_RENDER_FRAMES_H_ // NOLINT 66