1 files changed, 92 insertions, 0 deletions
diff --git a/externals/oboe/tests/testAudioClock.cpp b/externals/oboe/tests/testAudioClock.cpp
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+++ b/externals/oboe/tests/testAudioClock.cpp
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+/*
+ * Copyright 2022 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+/*
+ * Test FlowGraph
+ */
+
+#include "math.h"
+#include "stdio.h"
+
+#include <gtest/gtest.h>
+#include <oboe/Oboe.h>
+
+using namespace oboe;
+
+#define NANOS_PER_MICROSECOND    ((int64_t) 1000)
+
+constexpr int64_t kSleepTimeMicroSec = 50 * 1000;
+constexpr double kMaxLatenessMicroSec = 20 * 1000;
+
+TEST(TestAudioClock, GetNanosecondsMonotonic) {
+
+    int64_t startNanos = AudioClock::getNanoseconds(CLOCK_MONOTONIC);
+    usleep(kSleepTimeMicroSec);
+    int64_t endNanos = AudioClock::getNanoseconds(CLOCK_MONOTONIC);
+    ASSERT_GE(endNanos, startNanos + kSleepTimeMicroSec * kNanosPerMicrosecond);
+    ASSERT_LT(endNanos, startNanos + ((kSleepTimeMicroSec + kMaxLatenessMicroSec)
+            * kNanosPerMicrosecond));
+}
+
+TEST(TestAudioClock, GetNanosecondsRealtime) {
+
+    int64_t startNanos = AudioClock::getNanoseconds(CLOCK_REALTIME);
+    usleep(kSleepTimeMicroSec);
+    int64_t endNanos = AudioClock::getNanoseconds(CLOCK_REALTIME);
+    ASSERT_GE(endNanos, startNanos + kSleepTimeMicroSec * kNanosPerMicrosecond);
+    ASSERT_LT(endNanos, startNanos + ((kSleepTimeMicroSec + kMaxLatenessMicroSec)
+            * kNanosPerMicrosecond));
+}
+
+TEST(TestAudioClock, SleepUntilNanoTimeMonotonic) {
+
+    int64_t startNanos = AudioClock::getNanoseconds(CLOCK_MONOTONIC);
+    AudioClock::sleepUntilNanoTime(startNanos + kSleepTimeMicroSec * kNanosPerMicrosecond, CLOCK_MONOTONIC);
+    int64_t endNanos = AudioClock::getNanoseconds(CLOCK_MONOTONIC);
+    ASSERT_GE(endNanos, startNanos + kSleepTimeMicroSec * kNanosPerMicrosecond);
+    ASSERT_LT(endNanos, startNanos + ((kSleepTimeMicroSec + kMaxLatenessMicroSec)
+            * kNanosPerMicrosecond));
+}
+
+TEST(TestAudioClock, SleepUntilNanoTimeRealtime) {
+
+    int64_t startNanos = AudioClock::getNanoseconds(CLOCK_REALTIME);
+    AudioClock::sleepUntilNanoTime(startNanos + kSleepTimeMicroSec * kNanosPerMicrosecond, CLOCK_REALTIME);
+    int64_t endNanos = AudioClock::getNanoseconds(CLOCK_REALTIME);
+    ASSERT_GE(endNanos, startNanos + kSleepTimeMicroSec * kNanosPerMicrosecond);
+    ASSERT_LT(endNanos, startNanos + ((kSleepTimeMicroSec + kMaxLatenessMicroSec)
+            * kNanosPerMicrosecond));
+}
+
+TEST(TestAudioClock, SleepForNanosMonotonic) {
+
+    int64_t startNanos = AudioClock::getNanoseconds(CLOCK_MONOTONIC);
+    AudioClock::sleepForNanos(kSleepTimeMicroSec * kNanosPerMicrosecond, CLOCK_MONOTONIC);
+    int64_t endNanos = AudioClock::getNanoseconds(CLOCK_MONOTONIC);
+    ASSERT_GE(endNanos, startNanos + kSleepTimeMicroSec * kNanosPerMicrosecond);
+    ASSERT_LT(endNanos, startNanos + ((kSleepTimeMicroSec + kMaxLatenessMicroSec)
+            * kNanosPerMicrosecond));
+}
+
+TEST(TestAudioClock, SleepForNanosRealtime) {
+
+    int64_t startNanos = AudioClock::getNanoseconds(CLOCK_REALTIME);
+    AudioClock::sleepForNanos(kSleepTimeMicroSec * kNanosPerMicrosecond, CLOCK_REALTIME);
+    int64_t endNanos = AudioClock::getNanoseconds(CLOCK_REALTIME);
+    ASSERT_GE(endNanos, startNanos + kSleepTimeMicroSec * kNanosPerMicrosecond);
+    ASSERT_LT(endNanos, startNanos + ((kSleepTimeMicroSec + kMaxLatenessMicroSec)
+            * kNanosPerMicrosecond));
+}