#include "screencast/utils/clock.h"

#include <cassert>
#include <cstdint>

int main () {
    assert ( sc::rtp_timestamp_from_ns ( 0 ) == 0u );
    assert ( sc::rtp_timestamp_from_ns ( 1'000'000'000ULL ) == 90'000u );
    assert ( sc::rtp_timestamp_from_ns ( 500'000'000ULL ) == 45'000u );
    assert ( sc::rtp_timestamp_from_ns ( 16'666'667ULL ) == 1'500u );

    // A multiple of the wrap period should wrap back to zero.
    // Period in ns = ceil(2^32 * 100_000 / 9) because the helper uses
    // integer floor division (ns * 9 / 100_000).
    constexpr uint64_t period_ns = ( ( 1ULL << 32 ) * 100'000ULL + 9ULL - 1ULL ) / 9ULL;
    static_assert ( sc::rtp_timestamp_from_ns ( period_ns ) == 0u );
    static_assert ( sc::rtp_timestamp_from_ns ( period_ns + 1'000'000'000ULL ) == 90'000u );

    return 0;
}