| /* |
| * Copyright (C) 2017 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. |
| */ |
| package com.google.android.exoplayer2.audio; |
| |
| import static com.google.common.truth.Truth.assertThat; |
| import static org.junit.Assert.fail; |
| |
| import androidx.test.ext.junit.runners.AndroidJUnit4; |
| import com.google.android.exoplayer2.C; |
| import com.google.android.exoplayer2.audio.AudioProcessor.AudioFormat; |
| import com.google.android.exoplayer2.audio.AudioProcessor.UnhandledAudioFormatException; |
| import org.junit.Before; |
| import org.junit.Test; |
| import org.junit.runner.RunWith; |
| |
| /** Unit test for {@link SonicAudioProcessor}. */ |
| @RunWith(AndroidJUnit4.class) |
| public final class SonicAudioProcessorTest { |
| |
| private static final AudioFormat AUDIO_FORMAT_22050_HZ = |
| new AudioFormat( |
| /* sampleRate= */ 22050, /* channelCount= */ 2, /* encoding= */ C.ENCODING_PCM_16BIT); |
| private static final AudioFormat AUDIO_FORMAT_44100_HZ = |
| new AudioFormat( |
| /* sampleRate= */ 44100, /* channelCount= */ 2, /* encoding= */ C.ENCODING_PCM_16BIT); |
| private static final AudioFormat AUDIO_FORMAT_48000_HZ = |
| new AudioFormat( |
| /* sampleRate= */ 48000, /* channelCount= */ 2, /* encoding= */ C.ENCODING_PCM_16BIT); |
| |
| private SonicAudioProcessor sonicAudioProcessor; |
| |
| @Before |
| public void setUp() { |
| sonicAudioProcessor = new SonicAudioProcessor(); |
| } |
| |
| @Test |
| public void reconfigureWithSameSampleRate() throws Exception { |
| // When configured for resampling from 44.1 kHz to 48 kHz, the output sample rate is correct. |
| sonicAudioProcessor.setOutputSampleRateHz(48000); |
| AudioFormat outputAudioFormat = sonicAudioProcessor.configure(AUDIO_FORMAT_44100_HZ); |
| assertThat(sonicAudioProcessor.isActive()).isTrue(); |
| assertThat(outputAudioFormat.sampleRate).isEqualTo(48000); |
| // When reconfigured with 48 kHz input, there is no resampling. |
| outputAudioFormat = sonicAudioProcessor.configure(AUDIO_FORMAT_48000_HZ); |
| assertThat(sonicAudioProcessor.isActive()).isFalse(); |
| assertThat(outputAudioFormat.sampleRate).isEqualTo(48000); |
| // When reconfigure with 44.1 kHz input, resampling is enabled again. |
| outputAudioFormat = sonicAudioProcessor.configure(AUDIO_FORMAT_44100_HZ); |
| assertThat(sonicAudioProcessor.isActive()).isTrue(); |
| assertThat(outputAudioFormat.sampleRate).isEqualTo(48000); |
| } |
| |
| @Test |
| public void noSampleRateChange() throws Exception { |
| // Configure for resampling 44.1 kHz to 48 kHz. |
| sonicAudioProcessor.setOutputSampleRateHz(48000); |
| sonicAudioProcessor.configure(AUDIO_FORMAT_44100_HZ); |
| assertThat(sonicAudioProcessor.isActive()).isTrue(); |
| // Reconfigure to not modify the sample rate. |
| sonicAudioProcessor.setOutputSampleRateHz(SonicAudioProcessor.SAMPLE_RATE_NO_CHANGE); |
| sonicAudioProcessor.configure(AUDIO_FORMAT_22050_HZ); |
| // The sample rate is unmodified, and the audio processor is not active. |
| assertThat(sonicAudioProcessor.isActive()).isFalse(); |
| } |
| |
| @Test |
| public void isActiveWithSpeedChange() throws Exception { |
| sonicAudioProcessor.setSpeed(1.5f); |
| sonicAudioProcessor.configure(AUDIO_FORMAT_44100_HZ); |
| sonicAudioProcessor.flush(); |
| assertThat(sonicAudioProcessor.isActive()).isTrue(); |
| } |
| |
| @Test |
| public void isNotActiveWithNoChange() throws Exception { |
| sonicAudioProcessor.configure(AUDIO_FORMAT_44100_HZ); |
| assertThat(sonicAudioProcessor.isActive()).isFalse(); |
| } |
| |
| @Test |
| public void doesNotSupportNon16BitInput() throws Exception { |
| try { |
| sonicAudioProcessor.configure( |
| new AudioFormat( |
| /* sampleRate= */ 44100, /* channelCount= */ 2, /* encoding= */ C.ENCODING_PCM_8BIT)); |
| fail(); |
| } catch (UnhandledAudioFormatException e) { |
| // Expected. |
| } |
| try { |
| sonicAudioProcessor.configure( |
| new AudioFormat( |
| /* sampleRate= */ 44100, |
| /* channelCount= */ 2, |
| /* encoding= */ C.ENCODING_PCM_24BIT)); |
| fail(); |
| } catch (UnhandledAudioFormatException e) { |
| // Expected. |
| } |
| try { |
| sonicAudioProcessor.configure( |
| new AudioFormat( |
| /* sampleRate= */ 44100, |
| /* channelCount= */ 2, |
| /* encoding= */ C.ENCODING_PCM_32BIT)); |
| fail(); |
| } catch (UnhandledAudioFormatException e) { |
| // Expected. |
| } |
| } |
| |
| } |