ZLMediaKit/srt/Common.hpp

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#ifndef ZLMEDIAKIT_SRT_COMMON_H
#define ZLMEDIAKIT_SRT_COMMON_H
#include <chrono>
namespace SRT
{
using SteadyClock = std::chrono::steady_clock;
using TimePoint = std::chrono::time_point<SteadyClock>;
using Microseconds = std::chrono::microseconds;
using Milliseconds = std::chrono::milliseconds;
inline int64_t DurationCountMicroseconds( SteadyClock::duration dur){
return std::chrono::duration_cast<std::chrono::microseconds>(dur).count();
}
inline uint32_t loadUint32(uint8_t *ptr) {
return ptr[0] << 24 | ptr[1] << 16 | ptr[2] << 8 | ptr[3];
}
inline uint16_t loadUint16(uint8_t *ptr) {
return ptr[0] << 8 | ptr[1];
}
inline void storeUint32(uint8_t *buf, uint32_t val) {
buf[0] = val >> 24;
buf[1] = (val >> 16) & 0xff;
buf[2] = (val >> 8) & 0xff;
buf[3] = val & 0xff;
}
inline void storeUint16(uint8_t *buf, uint16_t val) {
buf[0] = (val >> 8) & 0xff;
buf[1] = val & 0xff;
}
inline void storeUint32LE(uint8_t *buf, uint32_t val) {
buf[0] = val & 0xff;
buf[1] = (val >> 8) & 0xff;
buf[2] = (val >> 16) & 0xff;
buf[3] = (val >>24) & 0xff;
}
inline void storeUint16LE(uint8_t *buf, uint16_t val) {
buf[0] = val & 0xff;
buf[1] = (val>>8) & 0xff;
}
inline uint32_t srtVersion(int major, int minor, int patch)
{
return patch + minor*0x100 + major*0x10000;
}
class UTicker {
public:
UTicker() {
_created = _begin = SteadyClock::now();
}
~UTicker() {
}
/**
* 获取创建时间,单位微妙
*/
int64_t elapsedTime(TimePoint now) const {
return DurationCountMicroseconds(now - _begin);
}
/**
* 获取上次resetTime后至今的时间单位毫秒
*/
int64_t createdTime(TimePoint now) const {
return DurationCountMicroseconds(now - _created);
}
/**
* 重置计时器
*/
void resetTime(TimePoint now) {
_begin = now;
}
private:
TimePoint _begin;
TimePoint _created;
};
} // namespace SRT
#endif //ZLMEDIAKIT_SRT_COMMON_H