Open Source Computer Vision Library https://opencv.org/
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#include <android/log.h>
#define LOG_TAG "JNIpart"
//#define LOGD(...)
#define LOGD(...) ((void)__android_log_print(ANDROID_LOG_DEBUG, LOG_TAG, __VA_ARGS__))
#define LOGE(...) ((void)__android_log_print(ANDROID_LOG_ERROR, LOG_TAG, __VA_ARGS__))
#include <time.h> // clock_gettime
static inline int64_t getTimeMs()
{
struct timespec now;
clock_gettime(CLOCK_MONOTONIC, &now);
return (int64_t) now.tv_sec*1000 + now.tv_nsec/1000000;
}
static inline int getTimeInterval(int64_t startTime)
{
return int(getTimeMs() - startTime);
}