1 /* 2 * Copyright (C) 2009 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 #include <stddef.h> 18 #include <sys/time.h> 19 20 #include <media/stagefright/TimeSource.h> 21 22 namespace android { 23 SystemTimeSource()24SystemTimeSource::SystemTimeSource() 25 : mStartTimeUs(GetSystemTimeUs()) { 26 } 27 getRealTimeUs()28int64_t SystemTimeSource::getRealTimeUs() { 29 return GetSystemTimeUs() - mStartTimeUs; 30 } 31 32 // static GetSystemTimeUs()33int64_t SystemTimeSource::GetSystemTimeUs() { 34 struct timeval tv; 35 gettimeofday(&tv, NULL); 36 37 return (int64_t)tv.tv_sec * 1000000 + tv.tv_usec; 38 } 39 40 } // namespace android 41 42