1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/media/omx-plugin/include/ics/utils/Timers.h Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,144 @@
1.4 +/*
1.5 + * Copyright (C) 2005 The Android Open Source Project
1.6 + *
1.7 + * Licensed under the Apache License, Version 2.0 (the "License");
1.8 + * you may not use this file except in compliance with the License.
1.9 + * You may obtain a copy of the License at
1.10 + *
1.11 + * http://www.apache.org/licenses/LICENSE-2.0
1.12 + *
1.13 + * Unless required by applicable law or agreed to in writing, software
1.14 + * distributed under the License is distributed on an "AS IS" BASIS,
1.15 + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
1.16 + * See the License for the specific language governing permissions and
1.17 + * limitations under the License.
1.18 + */
1.19 +
1.20 +//
1.21 +// Timer functions.
1.22 +//
1.23 +#ifndef _LIBS_UTILS_TIMERS_H
1.24 +#define _LIBS_UTILS_TIMERS_H
1.25 +
1.26 +#include <stdint.h>
1.27 +#include <sys/types.h>
1.28 +#include <sys/time.h>
1.29 +
1.30 +// ------------------------------------------------------------------
1.31 +// C API
1.32 +
1.33 +#ifdef __cplusplus
1.34 +extern "C" {
1.35 +#endif
1.36 +
1.37 +typedef int64_t nsecs_t; // nano-seconds
1.38 +
1.39 +static inline nsecs_t seconds_to_nanoseconds(nsecs_t secs)
1.40 +{
1.41 + return secs*1000000000;
1.42 +}
1.43 +
1.44 +static inline nsecs_t milliseconds_to_nanoseconds(nsecs_t secs)
1.45 +{
1.46 + return secs*1000000;
1.47 +}
1.48 +
1.49 +static inline nsecs_t microseconds_to_nanoseconds(nsecs_t secs)
1.50 +{
1.51 + return secs*1000;
1.52 +}
1.53 +
1.54 +static inline nsecs_t nanoseconds_to_seconds(nsecs_t secs)
1.55 +{
1.56 + return secs/1000000000;
1.57 +}
1.58 +
1.59 +static inline nsecs_t nanoseconds_to_milliseconds(nsecs_t secs)
1.60 +{
1.61 + return secs/1000000;
1.62 +}
1.63 +
1.64 +static inline nsecs_t nanoseconds_to_microseconds(nsecs_t secs)
1.65 +{
1.66 + return secs/1000;
1.67 +}
1.68 +
1.69 +static inline nsecs_t s2ns(nsecs_t v) {return seconds_to_nanoseconds(v);}
1.70 +static inline nsecs_t ms2ns(nsecs_t v) {return milliseconds_to_nanoseconds(v);}
1.71 +static inline nsecs_t us2ns(nsecs_t v) {return microseconds_to_nanoseconds(v);}
1.72 +static inline nsecs_t ns2s(nsecs_t v) {return nanoseconds_to_seconds(v);}
1.73 +static inline nsecs_t ns2ms(nsecs_t v) {return nanoseconds_to_milliseconds(v);}
1.74 +static inline nsecs_t ns2us(nsecs_t v) {return nanoseconds_to_microseconds(v);}
1.75 +
1.76 +static inline nsecs_t seconds(nsecs_t v) { return s2ns(v); }
1.77 +static inline nsecs_t milliseconds(nsecs_t v) { return ms2ns(v); }
1.78 +static inline nsecs_t microseconds(nsecs_t v) { return us2ns(v); }
1.79 +
1.80 +enum {
1.81 + SYSTEM_TIME_REALTIME = 0, // system-wide realtime clock
1.82 + SYSTEM_TIME_MONOTONIC = 1, // monotonic time since unspecified starting point
1.83 + SYSTEM_TIME_PROCESS = 2, // high-resolution per-process clock
1.84 + SYSTEM_TIME_THREAD = 3 // high-resolution per-thread clock
1.85 +};
1.86 +
1.87 +// return the system-time according to the specified clock
1.88 +#ifdef __cplusplus
1.89 +nsecs_t systemTime(int clock = SYSTEM_TIME_MONOTONIC);
1.90 +#else
1.91 +nsecs_t systemTime(int clock);
1.92 +#endif // def __cplusplus
1.93 +
1.94 +/**
1.95 + * Returns the number of milliseconds to wait between the reference time and the timeout time.
1.96 + * If the timeout is in the past relative to the reference time, returns 0.
1.97 + * If the timeout is more than INT_MAX milliseconds in the future relative to the reference time,
1.98 + * such as when timeoutTime == LLONG_MAX, returns -1 to indicate an infinite timeout delay.
1.99 + * Otherwise, returns the difference between the reference time and timeout time
1.100 + * rounded up to the next millisecond.
1.101 + */
1.102 +int toMillisecondTimeoutDelay(nsecs_t referenceTime, nsecs_t timeoutTime);
1.103 +
1.104 +#ifdef __cplusplus
1.105 +} // extern "C"
1.106 +#endif
1.107 +
1.108 +// ------------------------------------------------------------------
1.109 +// C++ API
1.110 +
1.111 +#ifdef __cplusplus
1.112 +
1.113 +namespace android {
1.114 +/*
1.115 + * Time the duration of something.
1.116 + *
1.117 + * Includes some timeval manipulation functions.
1.118 + */
1.119 +class DurationTimer {
1.120 +public:
1.121 + DurationTimer() {}
1.122 + ~DurationTimer() {}
1.123 +
1.124 + // Start the timer.
1.125 + void start();
1.126 + // Stop the timer.
1.127 + void stop();
1.128 + // Get the duration in microseconds.
1.129 + long long durationUsecs() const;
1.130 +
1.131 + // Subtract two timevals. Returns the difference (ptv1-ptv2) in
1.132 + // microseconds.
1.133 + static long long subtractTimevals(const struct timeval* ptv1,
1.134 + const struct timeval* ptv2);
1.135 +
1.136 + // Add the specified amount of time to the timeval.
1.137 + static void addToTimeval(struct timeval* ptv, long usec);
1.138 +
1.139 +private:
1.140 + struct timeval mStartWhen;
1.141 + struct timeval mStopWhen;
1.142 +};
1.143 +
1.144 +}; // android
1.145 +#endif // def __cplusplus
1.146 +
1.147 +#endif // _LIBS_UTILS_TIMERS_H
