如何同步線程以捕獲相同數量的幀？

Question

我正在開發Kinect應用程序。 我有兩個線程，一個用於讀取關節的值（包含20個關節的x，y，z坐標），另一個用於讀取深度值（每幀76800個短值）。 從開始按鈕到結束按鈕，我一直在記錄這些值。 我希望編寫相同數量的關節框架和深度，但是我總是以很多關節框架告終。 我捕獲了150個深度幀，但捕獲了180個聯合幀，我認為這是因為深度寫入緩沖區的數據量很大。 關節每幀只寫60個浮子，但深度為76800短褲。

如何從每個幀中捕獲相等數量的幀？ （Kinect捕獲深度並以25到30 FPS進行協調）

此日志還顯示了每個不相等的被調用線程的數量：

112/11/9 4:19:58: SKELETON

112/11/9 4:19:58: DEPTH

112/11/9 4:19:58: SKELETON

112/11/9 4:19:58: SKELETON

112/11/9 4:19:58: DEPTH

112/11/9 4:19:58: SKELETON

112/11/9 4:19:59: DEPTH

112/11/9 4:19:59: DEPTH

112/11/9 4:19:59: SKELETON

112/11/9 4:19:59: SKELETON

112/11/9 4:19:59: SKELETON

112/11/9 4:19:59: DEPTH

112/11/9 4:19:59: DEPTH

112/11/9 4:19:59: SKELETON

112/11/9 4:19:59: SKELETON

112/11/9 4:19:59: DEPTH

112/11/9 4:19:59: SKELETON


112/11/9 4:19:59: SKELETON

112/11/9 4:19:59: SKELETON


112/11/9 4:19:59: SKELETON

112/11/9 4:19:59: DEPTH

112/11/9 4:19:59: SKELETON

112/11/9 4:19:59: DEPTH

112/11/9 4:19:59: SKELETON

112/11/9 4:19:59: SKELETON

112/11/9 4:19:59: DEPTH


112/11/9 4:19:59: SKELETON

112/11/9 4:19:59: DEPTH

112/11/9 4:19:59: DEPTH

112/11/9 4:19:59: SKELETON

112/11/9 4:19:59: SKELETON


112/11/9 4:19:59: DEPTH

112/11/9 4:20:0: SKELETON

112/11/9 4:20:0: SKELETON

112/11/9 4:20:0: SKELETON

112/11/9 4:20:0: DEPTH

112/11/9 4:20:0: SKELETON

112/11/9 4:20:0: DEPTH

112/11/9 4:20:0: DEPTH

112/11/9 4:20:0: SKELETON

112/11/9 4:20:0: SKELETON

112/11/9 4:20:0: DEPTH

112/11/9 4:20:0: SKELETON

112/11/9 4:20:0: DEPTH

112/11/9 4:20:0: SKELETON

112/11/9 4:20:0: DEPTH

112/11/9 4:20:0: SKELETON

112/11/9 4:20:0: DEPTH

112/11/9 4:20:0: SKELETON

112/11/9 4:20:0: SKELETON

112/11/9 4:20:0: SKELETON

112/11/9 4:20:0: SKELETON

112/11/9 4:20:0: DEPTH

112/11/9 4:20:0: SKELETON

112/11/9 4:20:0: DEPTH

112/11/9 4:20:0: SKELETON

112/11/9 4:20:0: SKELETON

112/11/9 4:20:0: SKELETON

112/11/9 4:20:1: SKELETON

112/11/9 4:20:1: DEPTH

112/11/9 4:20:1: DEPTH

112/11/9 4:20:1: SKELETON

112/11/9 4:20:1: SKELETON

112/11/9 4:20:1: DEPTH

112/11/9 4:20:1: SKELETON

112/11/9 4:20:1: DEPTH

112/11/9 4:20:1: SKELETON

112/11/9 4:20:1: DEPTH

112/11/9 4:20:1: DEPTH

112/11/9 4:20:1: SKELETON

112/11/9 4:20:1: SKELETON

112/11/9 4:20:1: SKELETON

112/11/9 4:20:1: DEPTH

112/11/9 4:20:1: DEPTH

112/11/9 4:20:1: DEPTH

112/11/9 4:20:1: SKELETON

112/11/9 4:20:1: DEPTH

112/11/9 4:20:1: DEPTH

112/11/9 4:20:1: SKELETON

112/11/9 4:20:1: SKELETON

112/11/9 4:20:1: SKELETON

112/11/9 4:20:1: SKELETON

112/11/9 4:20:1: DEPTH

112/11/9 4:20:1: SKELETON

112/11/9 4:20:1: DEPTH

112/11/9 4:20:1: SKELETON

112/11/9 4:20:1: DEPTH

112/11/9 4:20:1: SKELETON

112/11/9 4:20:1: DEPTH

112/11/9 4:20:1: SKELETON

112/11/9 4:20:2: DEPTH

112/11/9 4:20:2: SKELETON

112/11/9 4:20:2: SKELETON

112/11/9 4:20:2: SKELETON

112/11/9 4:20:2: SKELETON

112/11/9 4:20:2: SKELETON

112/11/9 4:20:2: DEPTH

112/11/9 4:20:2: DEPTH

112/11/9 4:20:2: DEPTH

112/11/9 4:20:2: DEPTH

112/11/9 4:20:2: SKELETON

112/11/9 4:20:2: SKELETON

112/11/9 4:20:2: SKELETON

112/11/9 4:20:2: SKELETON

112/11/9 4:20:2: SKELETON

112/11/9 4:20:2: SKELETON

112/11/9 4:20:2: SKELETON

112/11/9 4:20:2: SKELETON

112/11/9 4:20:2: DEPTH

112/11/9 4:20:2: SKELETON

112/11/9 4:20:2: SKELETON

112/11/9 4:20:2: DEPTH

112/11/9 4:20:2: SKELETON

112/11/9 4:20:2: SKELETON

112/11/9 4:20:2: DEPTH

112/11/9 4:20:2: SKELETON

112/11/9 4:20:2: SKELETON

112/11/9 4:20:2: SKELETON

112/11/9 4:20:2: DEPTH

112/11/9 4:20:3: DEPTH

112/11/9 4:20:3: SKELETON

112/11/9 4:20:3: SKELETON

112/11/9 4:20:3: DEPTH

112/11/9 4:20:3: DEPTH

112/11/9 4:20:3: SKELETON

112/11/9 4:20:3: DEPTH

112/11/9 4:20:3: SKELETON

112/11/9 4:20:3: DEPTH

112/11/9 4:20:3: SKELETON

112/11/9 4:20:3: SKELETON

112/11/9 4:20:3: SKELETON

112/11/9 4:20:3: SKELETON

112/11/9 4:20:3: SKELETON


112/11/9 4:20:3: SKELETON

112/11/9 4:20:3: DEPTH

112/11/9 4:20:3: DEPTH


112/11/9 4:20:3: DEPTH

112/11/9 4:20:3: SKELETON

112/11/9 4:20:3: SKELETON

112/11/9 4:20:3: DEPTH

112/11/9 4:20:3: SKELETON

112/11/9 4:20:3: DEPTH

112/11/9 4:20:4: SKELETON

112/11/9 4:20:4: DEPTH

112/11/9 4:20:4: DEPTH

112/11/9 4:20:4: SKELETON

112/11/9 4:20:4: SKELETON

112/11/9 4:20:4: DEPTH

112/11/9 4:20:4: DEPTH

112/11/9 4:20:4: DEPTH

112/11/9 4:20:4: SKELETON

112/11/9 4:20:4: SKELETON

112/11/9 4:20:4: DEPTH

112/11/9 4:20:4: DEPTH

112/11/9 4:20:4: SKELETON

112/11/9 4:20:4: SKELETON

112/11/9 4:20:4: DEPTH

112/11/9 4:20:4: DEPTH

112/11/9 4:20:4: DEPTH

112/11/9 4:20:4: SKELETON

112/11/9 4:20:4: SKELETON

112/11/9 4:20:5: DEPTH

112/11/9 4:20:5: SKELETON

112/11/9 4:20:5: DEPTH

112/11/9 4:20:5: SKELETON

112/11/9 4:20:5: SKELETON

112/11/9 4:20:5: DEPTH

112/11/9 4:20:5: DEPTH

112/11/9 4:20:5: SKELETON

112/11/9 4:20:5: DEPTH

112/11/9 4:20:5: SKELETON

112/11/9 4:20:5: DEPTH

112/11/9 4:20:5: SKELETON

112/11/9 4:20:5: SKELETON

112/11/9 4:20:5: DEPTH

112/11/9 4:20:5: SKELETON

112/11/9 4:20:5: DEPTH


112/11/9 4:20:5: SKELETON

112/11/9 4:20:5: DEPTH


112/11/9 4:20:5: SKELETON

112/11/9 4:20:5: DEPTH

112/11/9 4:20:5: DEPTH

112/11/9 4:20:5: SKELETON


112/11/9 4:20:5: SKELETON

112/11/9 4:20:5: DEPTH

112/11/9 4:20:5: DEPTH

112/11/9 4:20:6: SKELETON

112/11/9 4:20:6: DEPTH

112/11/9 4:20:6: DEPTH

112/11/9 4:20:6: SKELETON

112/11/9 4:20:6: SKELETON

112/11/9 4:20:6: DEPTH

112/11/9 4:20:6: SKELETON

112/11/9 4:20:6: SKELETON


112/11/9 4:20:6: SKELETON

112/11/9 4:20:6: SKELETON

112/11/9 4:20:6: SKELETON

112/11/9 4:20:6: DEPTH

112/11/9 4:20:6: SKELETON

112/11/9 4:20:6: DEPTH

112/11/9 4:20:6: SKELETON

112/11/9 4:20:6: SKELETON

112/11/9 4:20:6: SKELETON

112/11/9 4:20:6: SKELETON

112/11/9 4:20:6: DEPTH

112/11/9 4:20:6: SKELETON

112/11/9 4:20:6: SKELETON

112/11/9 4:20:6: SKELETON

112/11/9 4:20:6: DEPTH

112/11/9 4:20:6: DEPTH
N
112/11/9 4:20:7: SKELETON

112/11/9 4:20:7: DEPTH

112/11/9 4:20:7: DEPTH

112/11/9 4:20:7: SKELETON

112/11/9 4:20:7: SKELETON

112/11/9 4:20:7: DEPTH

112/11/9 4:20:8: SKELETON

112/11/9 4:20:8: DEPTH

112/11/9 4:20:8: SKELETON

112/11/9 4:20:8: SKELETON

112/11/9 4:20:8: DEPTH

112/11/9 4:20:8: DEPTH

112/11/9 4:20:8: SKELETON

112/11/9 4:20:8: SKELETON

112/11/9 4:20:8: SKELETON

112/11/9 4:20:8: SKELETON

112/11/9 4:20:8: DEPTH

112/11/9 4:20:8: SKELETON

112/11/9 4:20:8: SKELETON

112/11/9 4:20:8: DEPTH

112/11/9 4:20:8: DEPTH

112/11/9 4:20:8: SKELETON

112/11/9 4:20:8: DEPTH

112/11/9 4:20:8: SKELETON

112/11/9 4:20:8: SKELETON

112/11/9 4:20:8: DEPTH

112/11/9 4:20:8: DEPTH

112/11/9 4:20:8: SKELETON

112/11/9 4:20:8: SKELETON

112/11/9 4:20:8: SKELETON

112/11/9 4:20:8: DEPTH

112/11/9 4:20:8: SKELETON

112/11/9 4:20:8: SKELETON

112/11/9 4:20:8: SKELETON

112/11/9 4:20:8: DEPTH

112/11/9 4:20:8: SKELETON

112/11/9 4:20:8: SKELETON

112/11/9 4:20:8: DEPTH

112/11/9 4:20:9: SKELETON

112/11/9 4:20:9: DEPTH

112/11/9 4:20:9: SKELETON

112/11/9 4:20:9: SKELETON

112/11/9 4:20:9: DEPTH

112/11/9 4:20:9: SKELETON

112/11/9 4:20:9: DEPTH

112/11/9 4:20:9: SKELETON

112/11/9 4:20:9: DEPTH

112/11/9 4:20:9: SKELETON

112/11/9 4:20:9: DEPTH

112/11/9 4:20:9: SKELETON

112/11/9 4:20:9: SKELETON

112/11/9 4:20:9: DEPTH

112/11/9 4:20:9: SKELETON

112/11/9 4:20:9: DEPTH

112/11/9 4:20:9: DEPTH

112/11/9 4:20:9: SKELETON

112/11/9 4:20:9: SKELETON

112/11/9 4:20:9: SKELETON

112/11/9 4:20:9: DEPTH

112/11/9 4:20:9: SKELETON

112/11/9 4:20:9: SKELETON

112/11/9 4:20:9: SKELETON

112/11/9 4:20:9: DEPTH

112/11/9 4:20:9: SKELETON

112/11/9 4:20:9: SKELETON

112/11/9 4:20:9: SKELETON

112/11/9 4:20:10: DEPTH

112/11/9 4:20:10: SKELETON

112/11/9 4:20:10: SKELETON

112/11/9 4:20:10: SKELETON

112/11/9 4:20:10: DEPTH

112/11/9 4:20:10: SKELETON

112/11/9 4:20:10: SKELETON

112/11/9 4:20:10: DEPTH

112/11/9 4:20:10: SKELETON

112/11/9 4:20:10: SKELETON

112/11/9 4:20:10: SKELETON

112/11/9 4:20:10: DEPTH

112/11/9 4:20:10: SKELETON

112/11/9 4:20:10: SKELETON


112/11/9 4:20:10: DEPTH

112/11/9 4:20:10: SKELETON

112/11/9 4:20:10: SKELETON

112/11/9 4:20:10: DEPTH

112/11/9 4:20:10: SKELETON

112/11/9 4:20:10: DEPTH

112/11/9 4:20:10: SKELETON

112/11/9 4:20:10: DEPTH

112/11/9 4:20:10: SKELETON

112/11/9 4:20:10: SKELETON

112/11/9 4:20:10: DEPTH

112/11/9 4:20:10: SKELETON

112/11/9 4:20:10: DEPTH

112/11/9 4:20:10: SKELETON

112/11/9 4:20:11: SKELETON

112/11/9 4:20:11: DEPTH

112/11/9 4:20:11: SKELETON

112/11/9 4:20:11: DEPTH

112/11/9 4:20:11: SKELETON

112/11/9 4:20:11: DEPTH

112/11/9 4:20:11: SKELETON

112/11/9 4:20:11: DEPTH

112/11/9 4:20:11: SKELETON

112/11/9 4:20:11: SKELETON

112/11/9 4:20:11: DEPTH

112/11/9 4:20:11: SKELETON

112/11/9 4:20:11: DEPTH

112/11/9 4:20:11: SKELETON

112/11/9 4:20:11: DEPTH

112/11/9 4:20:11: SKELETON

112/11/9 4:20:11: SKELETON

112/11/9 4:20:11: DEPTH

112/11/9 4:20:11: SKELETON

112/11/9 4:20:11: DEPTH

112/11/9 4:20:11: SKELETON

112/11/9 4:20:11: SKELETON

112/11/9 4:20:11: DEPTH

112/11/9 4:20:11: DEPTH

112/11/9 4:20:11: SKELETON

112/11/9 4:20:11: DEPTH
N
112/11/9 4:20:12: DEPTH

112/11/9 4:20:12: SKELETON

112/11/9 4:20:12: DEPTH

112/11/9 4:20:12: SKELETON

112/11/9 4:20:12: DEPTH

112/11/9 4:20:12: SKELETON

112/11/9 4:20:12: SKELETON

112/11/9 4:20:12: DEPTH

112/11/9 4:20:12: SKELETON

112/11/9 4:20:12: DEPTH

112/11/9 4:20:12: SKELETON

112/11/9 4:20:12: DEPTH

112/11/9 4:20:12: SKELETON

112/11/9 4:20:12: DEPTH

112/11/9 4:20:12: SKELETON

112/11/9 4:20:12: DEPTH

112/11/9 4:20:12: SKELETON

112/11/9 4:20:12: DEPTH

112/11/9 4:20:12: SKELETON

112/11/9 4:20:12: SKELETON

112/11/9 4:20:12: DEPTH

112/11/9 4:20:12: DEPTH

112/11/9 4:20:12: SKELETON

112/11/9 4:20:12: SKELETON

112/11/9 4:20:12: DEPTH

112/11/9 4:20:13: SKELETON

112/11/9 4:20:13: DEPTH

112/11/9 4:20:13: SKELETON

112/11/9 4:20:13: SKELETON

112/11/9 4:20:13: DEPTH

112/11/9 4:20:13: SKELETON

112/11/9 4:20:13: DEPTH

112/11/9 4:20:13: DEPTH

112/11/9 4:20:13: SKELETON

112/11/9 4:20:13: SKELETON

112/11/9 4:20:13: SKELETON

112/11/9 4:20:13: DEPTH

112/11/9 4:20:13: SKELETON

112/11/9 4:20:13: DEPTH

112/11/9 4:20:13: SKELETON

112/11/9 4:20:13: DEPTH

112/11/9 4:20:13: SKELETON

112/11/9 4:20:13: SKELETON

112/11/9 4:20:13: DEPTH

112/11/9 4:20:13: DEPTH

112/11/9 4:20:13: DEPTH

112/11/9 4:20:13: SKELETON

112/11/9 4:20:13: DEPTH

112/11/9 4:20:13: SKELETON

112/11/9 4:20:13: SKELETON

112/11/9 4:20:13: SKELETON

112/11/9 4:20:14: SKELETON

112/11/9 4:20:14: DEPTH

112/11/9 4:20:14: SKELETON

112/11/9 4:20:14: DEPTH

112/11/9 4:20:14: SKELETON

112/11/9 4:20:14: SKELETON

112/11/9 4:20:14: DEPTH

112/11/9 4:20:14: DEPTH

112/11/9 4:20:14: SKELETON

112/11/9 4:20:14: SKELETON

112/11/9 4:20:14: DEPTH

112/11/9 4:20:14: SKELETON

112/11/9 4:20:14: SKELETON

112/11/9 4:20:14: DEPTH

112/11/9 4:20:14: SKELETON

112/11/9 4:20:14: SKELETON

112/11/9 4:20:14: DEPTH

112/11/9 4:20:14: SKELETON

112/11/9 4:20:14: DEPTH

112/11/9 4:20:14: SKELETON

112/11/9 4:20:14: DEPTH

112/11/9 4:20:14: SKELETON

112/11/9 4:20:14: SKELETON

112/11/9 4:20:14: DEPTH

112/11/9 4:20:15: SKELETON

112/11/9 4:20:15: DEPTH

112/11/9 4:20:15: SKELETON

112/11/9 4:20:15: DEPTH

112/11/9 4:20:15: SKELETON

112/11/9 4:20:15: DEPTH

112/11/9 4:20:15: DEPTH

112/11/9 4:20:15: SKELETON

112/11/9 4:20:15: SKELETON

112/11/9 4:20:15: DEPTH

Answer 1

共享表受鎖和條件變量保護，該變量對已捕獲的每種類型的幀數進行計數。 如果一個線程發現它捕獲了比另一個線程更多的幀，則將其阻塞在條件變量上。 當任一線程完成獲取幀時，它將增加其類型的計數並廣播條件變量。