| // Copyright 2016 The Chromium 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 "media/base/audio_latency.h" |
| |
| #include <stdint.h> |
| |
| #include "base/logging.h" |
| #include "base/time/time.h" |
| #include "build/build_config.h" |
| #include "media/base/limits.h" |
| #include "testing/gtest/include/gtest/gtest.h" |
| |
| namespace media { |
| |
| // TODO(olka): extend unit tests, use real-world sample rates. |
| |
| TEST(AudioLatency, HighLatencyBufferSizes) { |
| #if defined(OS_WIN) |
| for (int i = 6400; i <= 204800; i *= 2) { |
| EXPECT_EQ(2 * (i / 100), |
| AudioLatency::GetHighLatencyBufferSize(i, i / 100)); |
| } |
| #else |
| for (int i = 6400; i <= 204800; i *= 2) |
| EXPECT_EQ(2 * (i / 100), AudioLatency::GetHighLatencyBufferSize(i, 32)); |
| #endif // defined(OS_WIN) |
| } |
| |
| TEST(AudioLatency, InteractiveBufferSizes) { |
| for (int i = 6400; i <= 204800; i *= 2) |
| EXPECT_EQ(i / 100, AudioLatency::GetInteractiveBufferSize(i / 100)); |
| } |
| |
| TEST(AudioLatency, RtcBufferSizes) { |
| for (int i = 6400; i < 204800; i *= 2) { |
| EXPECT_EQ(i / 100, AudioLatency::GetRtcBufferSize(i, 0)); |
| #if defined(OS_WIN) |
| EXPECT_EQ(500, AudioLatency::GetRtcBufferSize(i, 500)); |
| #elif defined(OS_ANDROID) |
| EXPECT_EQ(i / 50, AudioLatency::GetRtcBufferSize(i, i / 50 - 1)); |
| EXPECT_EQ(i / 50 + 1, AudioLatency::GetRtcBufferSize(i, i / 50 + 1)); |
| #else |
| EXPECT_EQ(i / 100, AudioLatency::GetRtcBufferSize(i, 500)); |
| #endif // defined(OS_WIN) |
| } |
| } |
| |
| TEST(AudioLatency, ExactBufferSizes) { |
| const int hardware_buffer_size = 256; |
| const int hardware_sample_rate = 44100; |
| const int max_webaudio_buffer_size = 8192; |
| |
| #if defined(OS_MACOSX) || defined(USE_CRAS) |
| const int minimum_buffer_size = limits::kMinAudioBufferSize; |
| #else |
| const int minimum_buffer_size = hardware_buffer_size; |
| #endif |
| |
| EXPECT_EQ(minimum_buffer_size, |
| media::AudioLatency::GetExactBufferSize( |
| base::TimeDelta::FromSecondsD(0.0), hardware_sample_rate, |
| hardware_buffer_size)); |
| EXPECT_EQ( |
| minimum_buffer_size, |
| media::AudioLatency::GetExactBufferSize( |
| base::TimeDelta::FromSecondsD( |
| minimum_buffer_size / static_cast<double>(hardware_sample_rate)), |
| hardware_sample_rate, hardware_buffer_size)); |
| EXPECT_EQ(minimum_buffer_size * 2, |
| media::AudioLatency::GetExactBufferSize( |
| base::TimeDelta::FromSecondsD( |
| (minimum_buffer_size * 2) / |
| static_cast<double>(hardware_sample_rate)), |
| hardware_sample_rate, hardware_buffer_size)); |
| EXPECT_EQ(minimum_buffer_size * 2, |
| media::AudioLatency::GetExactBufferSize( |
| base::TimeDelta::FromSecondsD( |
| (minimum_buffer_size * 1.1) / |
| static_cast<double>(hardware_sample_rate)), |
| hardware_sample_rate, hardware_buffer_size)); |
| EXPECT_EQ(max_webaudio_buffer_size, |
| media::AudioLatency::GetExactBufferSize( |
| base::TimeDelta::FromSecondsD(10.0), hardware_sample_rate, |
| hardware_buffer_size)); |
| |
| #if defined(OS_MACOSX) |
| EXPECT_EQ(limits::kMaxAudioBufferSize, |
| media::AudioLatency::GetExactBufferSize( |
| base::TimeDelta::FromSecondsD( |
| limits::kMaxAudioBufferSize / |
| static_cast<double>(hardware_sample_rate)), |
| hardware_sample_rate, hardware_buffer_size)); |
| EXPECT_EQ(max_webaudio_buffer_size, |
| media::AudioLatency::GetExactBufferSize( |
| base::TimeDelta::FromSecondsD( |
| (limits::kMaxAudioBufferSize * 1.1) / |
| static_cast<double>(hardware_sample_rate)), |
| hardware_sample_rate, hardware_buffer_size)); |
| #endif |
| |
| int previous_buffer_size = 0; |
| for (int i = 0; i < 1000; i++) { |
| int buffer_size = media::AudioLatency::GetExactBufferSize( |
| base::TimeDelta::FromSecondsD(i / 1000.0), hardware_sample_rate, |
| hardware_buffer_size); |
| EXPECT_GE(buffer_size, previous_buffer_size); |
| EXPECT_EQ(buffer_size, |
| buffer_size / minimum_buffer_size * minimum_buffer_size); |
| previous_buffer_size = buffer_size; |
| } |
| } |
| } // namespace media |