TimeLord.cpp revision 18f16e6fba74eda173e1e7c869e6e2e2acc073ff
118f16e6fba74eda173e1e7c869e6e2e2acc073ffJohn Reck/* 218f16e6fba74eda173e1e7c869e6e2e2acc073ffJohn Reck * Copyright (C) 2014 The Android Open Source Project 318f16e6fba74eda173e1e7c869e6e2e2acc073ffJohn Reck * 418f16e6fba74eda173e1e7c869e6e2e2acc073ffJohn Reck * Licensed under the Apache License, Version 2.0 (the "License"); 518f16e6fba74eda173e1e7c869e6e2e2acc073ffJohn Reck * you may not use this file except in compliance with the License. 618f16e6fba74eda173e1e7c869e6e2e2acc073ffJohn Reck * You may obtain a copy of the License at 718f16e6fba74eda173e1e7c869e6e2e2acc073ffJohn Reck * 818f16e6fba74eda173e1e7c869e6e2e2acc073ffJohn Reck * http://www.apache.org/licenses/LICENSE-2.0 918f16e6fba74eda173e1e7c869e6e2e2acc073ffJohn Reck * 1018f16e6fba74eda173e1e7c869e6e2e2acc073ffJohn Reck * Unless required by applicable law or agreed to in writing, software 1118f16e6fba74eda173e1e7c869e6e2e2acc073ffJohn Reck * distributed under the License is distributed on an "AS IS" BASIS, 1218f16e6fba74eda173e1e7c869e6e2e2acc073ffJohn Reck * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 1318f16e6fba74eda173e1e7c869e6e2e2acc073ffJohn Reck * See the License for the specific language governing permissions and 1418f16e6fba74eda173e1e7c869e6e2e2acc073ffJohn Reck * limitations under the License. 1518f16e6fba74eda173e1e7c869e6e2e2acc073ffJohn Reck */ 1618f16e6fba74eda173e1e7c869e6e2e2acc073ffJohn Reck#include "TimeLord.h" 1718f16e6fba74eda173e1e7c869e6e2e2acc073ffJohn Reck 1818f16e6fba74eda173e1e7c869e6e2e2acc073ffJohn Recknamespace android { 1918f16e6fba74eda173e1e7c869e6e2e2acc073ffJohn Recknamespace uirenderer { 2018f16e6fba74eda173e1e7c869e6e2e2acc073ffJohn Recknamespace renderthread { 2118f16e6fba74eda173e1e7c869e6e2e2acc073ffJohn Reck 2218f16e6fba74eda173e1e7c869e6e2e2acc073ffJohn ReckTimeLord::TimeLord() 2318f16e6fba74eda173e1e7c869e6e2e2acc073ffJohn Reck : mFrameIntervalNanos(0) 2418f16e6fba74eda173e1e7c869e6e2e2acc073ffJohn Reck , mFrameTimeNanos(0) { 2518f16e6fba74eda173e1e7c869e6e2e2acc073ffJohn Reck} 2618f16e6fba74eda173e1e7c869e6e2e2acc073ffJohn Reck 2718f16e6fba74eda173e1e7c869e6e2e2acc073ffJohn Reckvoid TimeLord::vsyncReceived(nsecs_t vsync) { 2818f16e6fba74eda173e1e7c869e6e2e2acc073ffJohn Reck if (vsync > mFrameTimeNanos) { 2918f16e6fba74eda173e1e7c869e6e2e2acc073ffJohn Reck mFrameTimeNanos = vsync; 3018f16e6fba74eda173e1e7c869e6e2e2acc073ffJohn Reck } 3118f16e6fba74eda173e1e7c869e6e2e2acc073ffJohn Reck} 3218f16e6fba74eda173e1e7c869e6e2e2acc073ffJohn Reck 3318f16e6fba74eda173e1e7c869e6e2e2acc073ffJohn Recknsecs_t TimeLord::frameTimeMs() { 3418f16e6fba74eda173e1e7c869e6e2e2acc073ffJohn Reck // Logic copied from Choreographer.java 3518f16e6fba74eda173e1e7c869e6e2e2acc073ffJohn Reck nsecs_t now = systemTime(CLOCK_MONOTONIC); 3618f16e6fba74eda173e1e7c869e6e2e2acc073ffJohn Reck nsecs_t jitterNanos = now - mFrameTimeNanos; 3718f16e6fba74eda173e1e7c869e6e2e2acc073ffJohn Reck if (jitterNanos >= mFrameIntervalNanos) { 3818f16e6fba74eda173e1e7c869e6e2e2acc073ffJohn Reck nsecs_t lastFrameOffset = jitterNanos % mFrameIntervalNanos; 3918f16e6fba74eda173e1e7c869e6e2e2acc073ffJohn Reck mFrameTimeNanos = now - lastFrameOffset; 4018f16e6fba74eda173e1e7c869e6e2e2acc073ffJohn Reck } 4118f16e6fba74eda173e1e7c869e6e2e2acc073ffJohn Reck return nanoseconds_to_milliseconds(mFrameTimeNanos); 4218f16e6fba74eda173e1e7c869e6e2e2acc073ffJohn Reck} 4318f16e6fba74eda173e1e7c869e6e2e2acc073ffJohn Reck 4418f16e6fba74eda173e1e7c869e6e2e2acc073ffJohn Reck} /* namespace renderthread */ 4518f16e6fba74eda173e1e7c869e6e2e2acc073ffJohn Reck} /* namespace uirenderer */ 4618f16e6fba74eda173e1e7c869e6e2e2acc073ffJohn Reck} /* namespace android */ 47