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// Copyright (c) 2014 The Chromium OS Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include <gtest/gtest.h>
extern "C" {
#include "rate_estimator.h"
}
static struct timespec window = {.tv_sec = 0, .tv_nsec = 10000000};
TEST(RateEstimatorTest, EstimateOutputLinear) {
struct rate_estimator* re;
struct timespec t = {.tv_sec = 1, .tv_nsec = 0};
int i, rc, level, tmp;
re = rate_estimator_create(10000, &window, 0.0f);
level = 240;
for (i = 0; i < 20; i++) {
rc = rate_estimator_check(re, level, &t);
EXPECT_EQ(0, rc);
/* Test that output device consumes 5 frames. */
tmp = rand() % 10;
rate_estimator_add_frames(re, 5 + tmp);
level += tmp;
t.tv_nsec += 500000;
}
t.tv_nsec += 1;
rc = rate_estimator_check(re, level, &t);
EXPECT_EQ(1, rc);
EXPECT_GT(10000, rate_estimator_get_rate(re));
EXPECT_LT(9999, rate_estimator_get_rate(re));
rate_estimator_destroy(re);
}
TEST(RateEstimatorTest, EstimateOutputLinear2) {
struct rate_estimator* re;
struct timespec t = {.tv_sec = 1, .tv_nsec = 0};
int level = 240;
int i, rc, tmp;
int interval_nsec[5] = {1000000, 1500000, 2000000, 2500000, 3000000};
int frames_written[5] = {30, 25, 20, 15, 10};
re = rate_estimator_create(7470, &window, 0.0f);
for (i = 0; i < 5; i++) {
rc = rate_estimator_check(re, level, &t);
EXPECT_EQ(0, rc);
tmp = rand() % 10;
rate_estimator_add_frames(re, frames_written[i] + tmp);
level += tmp;
t.tv_nsec += interval_nsec[i];
}
t.tv_nsec += 1;
rc = rate_estimator_check(re, level, &t);
EXPECT_EQ(1, rc);
/* Calculated rate is 7475.72 */
EXPECT_GT(7476, rate_estimator_get_rate(re));
EXPECT_LT(7475, rate_estimator_get_rate(re));
rate_estimator_destroy(re);
}
TEST(RateEstimatorTest, EstimateRateSkewTooLarge) {
struct rate_estimator* re;
struct timespec t = {.tv_sec = 1, .tv_nsec = 0};
int level = 240;
int i, rc, tmp;
int interval_nsec[5] = {1000000, 1500000, 2000000, 2500000, 3000000};
int frames_written[5] = {30, 25, 20, 15, 10};
re = rate_estimator_create(10000, &window, 0.0f);
for (i = 0; i < 5; i++) {
rc = rate_estimator_check(re, level, &t);
EXPECT_EQ(0, rc);
tmp = rand() % 10;
rate_estimator_add_frames(re, frames_written[i] + tmp);
level += tmp;
t.tv_nsec += interval_nsec[i];
}
t.tv_nsec += 1;
rc = rate_estimator_check(re, level, &t);
EXPECT_EQ(1, rc);
/* Estimated rate too far from allowed max rate skew */
EXPECT_EQ(10000, rate_estimator_get_rate(re));
rate_estimator_destroy(re);
}
TEST(RateEstimatorTest, EstimateOutputSmooth) {
struct rate_estimator* re;
struct timespec t = {.tv_sec = 1, .tv_nsec = 0};
int rc;
re = rate_estimator_create(10010, &window, 0.9f);
rc = rate_estimator_check(re, 240, &t);
EXPECT_EQ(0, rc);
/* Test that output device consumes 100 frames in
* 10ms. */
rate_estimator_add_frames(re, 55);
t.tv_nsec += 5000000;
rc = rate_estimator_check(re, 245, &t);
EXPECT_EQ(0, rc);
rate_estimator_add_frames(re, 55);
t.tv_nsec += 5000001;
rc = rate_estimator_check(re, 250, &t);
EXPECT_EQ(1, rc);
/* Assert the rate is smoothed 10010 * 0.9 + 10000 * 0.1 */
EXPECT_LT(10008, rate_estimator_get_rate(re));
EXPECT_GT(10009, rate_estimator_get_rate(re));
rate_estimator_destroy(re);
}
TEST(RateEstimatorTest, EstimateInputLinear) {
struct rate_estimator* re;
struct timespec t = {.tv_sec = 1, .tv_nsec = 0};
int i, rc, level, tmp;
re = rate_estimator_create(10000, &window, 0.0f);
level = 1200;
for (i = 0; i < 20; i++) {
rc = rate_estimator_check(re, level, &t);
EXPECT_EQ(0, rc);
/* Test that stream consumes 5 frames. */
tmp = rand() % 10;
rate_estimator_add_frames(re, -(5 + tmp));
level -= tmp;
t.tv_nsec += 500000;
}
t.tv_nsec += 1;
rc = rate_estimator_check(re, level, &t);
EXPECT_EQ(1, rc);
EXPECT_GT(10000, rate_estimator_get_rate(re));
EXPECT_LT(9999, rate_estimator_get_rate(re));
rate_estimator_destroy(re);
}
TEST(RateEstimatorTest, EstimateInputLinear2) {
struct rate_estimator* re;
struct timespec t;
int rc;
static struct timespec this_window = {.tv_sec = 0, .tv_nsec = 100000000};
re = rate_estimator_create(10000, &this_window, 0.0f);
t.tv_sec = 1;
t.tv_nsec = 0;
rc = rate_estimator_check(re, 200, &t);
EXPECT_EQ(0, rc);
t.tv_nsec += 50000000;
rc = rate_estimator_check(re, 700, &t);
EXPECT_EQ(0, rc);
rate_estimator_add_frames(re, -100);
t.tv_nsec += 50000000;
rc = rate_estimator_check(re, 1100, &t);
t.tv_nsec += 1;
rc = rate_estimator_check(re, 1100, &t);
EXPECT_EQ(1, rc);
EXPECT_GT(10000, rate_estimator_get_rate(re));
EXPECT_LT(9999, rate_estimator_get_rate(re));
rate_estimator_destroy(re);
}
int main(int argc, char** argv) {
::testing::InitGoogleTest(&argc, argv);
return RUN_ALL_TESTS();
}
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