| /* |
| * Copyright (c) 2015 The WebRTC project authors. All Rights Reserved. |
| * |
| * Use of this source code is governed by a BSD-style license |
| * that can be found in the LICENSE file in the root of the source |
| * tree. An additional intellectual property rights grant can be found |
| * in the file PATENTS. All contributing project authors may |
| * be found in the AUTHORS file in the root of the source tree. |
| */ |
| #include "webrtc/modules/rtp_rtcp/source/time_util.h" |
| |
| #include "testing/gtest/include/gtest/gtest.h" |
| |
| namespace webrtc { |
| |
| TEST(TimeUtilTest, CompactNtp) { |
| const uint32_t kNtpSec = 0x12345678; |
| const uint32_t kNtpFrac = 0x23456789; |
| const NtpTime kNtp(kNtpSec, kNtpFrac); |
| const uint32_t kNtpMid = 0x56782345; |
| EXPECT_EQ(kNtpMid, CompactNtp(kNtp)); |
| } |
| |
| TEST(TimeUtilTest, CompactNtpToMs) { |
| const NtpTime ntp1(0x12345, 0x23456); |
| const NtpTime ntp2(0x12654, 0x64335); |
| uint32_t ms_diff = ntp2.ToMs() - ntp1.ToMs(); |
| uint32_t ntp_diff = CompactNtp(ntp2) - CompactNtp(ntp1); |
| |
| uint32_t ntp_to_ms_diff = CompactNtpIntervalToMs(ntp_diff); |
| |
| EXPECT_NEAR(ms_diff, ntp_to_ms_diff, 1); |
| } |
| |
| TEST(TimeUtilTest, CompactNtpToMsWithWrap) { |
| const NtpTime ntp1(0x1ffff, 0x23456); |
| const NtpTime ntp2(0x20000, 0x64335); |
| uint32_t ms_diff = ntp2.ToMs() - ntp1.ToMs(); |
| |
| // While ntp2 > ntp1, there compact ntp presentation happen to be opposite. |
| // That shouldn't be a problem as long as unsigned arithmetic is used. |
| ASSERT_GT(ntp2.ToMs(), ntp1.ToMs()); |
| ASSERT_LT(CompactNtp(ntp2), CompactNtp(ntp1)); |
| |
| uint32_t ntp_diff = CompactNtp(ntp2) - CompactNtp(ntp1); |
| uint32_t ntp_to_ms_diff = CompactNtpIntervalToMs(ntp_diff); |
| |
| EXPECT_NEAR(ms_diff, ntp_to_ms_diff, 1); |
| } |
| |
| TEST(TimeUtilTest, CompactNtpToMsLarge) { |
| const NtpTime ntp1(0x10000, 0x23456); |
| const NtpTime ntp2(0x1ffff, 0x64335); |
| uint32_t ms_diff = ntp2.ToMs() - ntp1.ToMs(); |
| // Ntp difference close to maximum of ~18 hours should convert correctly too. |
| ASSERT_GT(ms_diff, 18u * 3600 * 1000); |
| uint32_t ntp_diff = CompactNtp(ntp2) - CompactNtp(ntp1); |
| uint32_t ntp_to_ms_diff = CompactNtpIntervalToMs(ntp_diff); |
| |
| EXPECT_NEAR(ms_diff, ntp_to_ms_diff, 1); |
| } |
| } // namespace webrtc |