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Fix nits in FloatAudioMixingAlgorithmTest.
* Reorder methods. * Arrange, act, assert split. PiperOrigin-RevId: 517158351
This commit is contained in:
samrobinson
microkatz
parent
de3678e461
commit
78373991b8
1 changed files with 181 additions and 181 deletions
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@ -66,192 +66,12 @@ public final class FloatAudioMixingAlgorithmTest {
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assertThat(algorithm.supportsSourceAudioFormat(AUDIO_FORMAT_MONO_PCM_16BIT)).isTrue();
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}
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@Test
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public void mixStereoFloatIntoStereoFloat() {
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AudioMixingAlgorithm algorithm = new FloatAudioMixingAlgorithm(AUDIO_FORMAT_STEREO_PCM_FLOAT);
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ByteBuffer mixingBuffer = createByteBuffer(new float[] {0.25f, -0.25f, 0.5f, -0.5f});
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ByteBuffer sourceBuffer = createByteBuffer(new float[] {-0.5f, 0.25f, -0.25f, 0.5f});
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algorithm.mix(
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sourceBuffer,
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AUDIO_FORMAT_STEREO_PCM_FLOAT,
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STEREO_TO_STEREO.scaleBy(0.5f),
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/* frameCount= */ 2,
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mixingBuffer);
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assertWithMessage("Source buffer").that(sourceBuffer.remaining()).isEqualTo(0);
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assertWithMessage("Mixing buffer").that(mixingBuffer.remaining()).isEqualTo(0);
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mixingBuffer.flip();
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assertThat(createFloatArray(mixingBuffer)).isEqualTo(new float[] {0f, -0.125f, 0.375f, -0.25f});
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}
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@Test
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public void mixMonoFloatIntoStereoFloat() {
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AudioMixingAlgorithm algorithm = new FloatAudioMixingAlgorithm(AUDIO_FORMAT_STEREO_PCM_FLOAT);
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ByteBuffer mixingBuffer = createByteBuffer(new float[] {0.25f, -0.25f, 0.5f, -0.5f});
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ByteBuffer sourceBuffer = createByteBuffer(new float[] {-0.5f, 0.5f});
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algorithm.mix(
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sourceBuffer,
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AUDIO_FORMAT_MONO_PCM_FLOAT,
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MONO_TO_STEREO.scaleBy(0.5f),
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/* frameCount= */ 2,
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mixingBuffer);
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assertWithMessage("Source buffer").that(sourceBuffer.remaining()).isEqualTo(0);
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assertWithMessage("Mixing buffer").that(mixingBuffer.remaining()).isEqualTo(0);
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mixingBuffer.flip();
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assertThat(createFloatArray(mixingBuffer)).isEqualTo(new float[] {0f, -0.5f, 0.75f, -0.25f});
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}
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@Test
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public void mixStereoFloatIntoMonoFloat() {
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AudioMixingAlgorithm algorithm = new FloatAudioMixingAlgorithm(AUDIO_FORMAT_MONO_PCM_FLOAT);
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ByteBuffer mixingBuffer = createByteBuffer(new float[] {0.25f, 0.5f});
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ByteBuffer sourceBuffer = createByteBuffer(new float[] {-0.5f, 0.25f, -0.25f, 0.5f});
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algorithm.mix(
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sourceBuffer,
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AUDIO_FORMAT_STEREO_PCM_FLOAT,
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STEREO_TO_MONO.scaleBy(0.5f),
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/* frameCount= */ 2,
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mixingBuffer);
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assertWithMessage("Source buffer").that(sourceBuffer.remaining()).isEqualTo(0);
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assertWithMessage("Mixing buffer").that(mixingBuffer.remaining()).isEqualTo(0);
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mixingBuffer.flip();
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assertThat(createFloatArray(mixingBuffer)).isEqualTo(new float[] {0.1875f, 0.5625f});
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}
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@Test
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public void mixMonoFloatIntoMonoFloat() {
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AudioMixingAlgorithm algorithm = new FloatAudioMixingAlgorithm(AUDIO_FORMAT_MONO_PCM_FLOAT);
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ByteBuffer mixingBuffer = createByteBuffer(new float[] {0.25f, -0.25f});
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ByteBuffer sourceBuffer = createByteBuffer(new float[] {0.5f, 0.25f});
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algorithm.mix(
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sourceBuffer,
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AUDIO_FORMAT_MONO_PCM_FLOAT,
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MONO_TO_MONO.scaleBy(0.5f),
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/* frameCount= */ 2,
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mixingBuffer);
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assertWithMessage("Source buffer").that(sourceBuffer.remaining()).isEqualTo(0);
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assertWithMessage("Mixing buffer").that(mixingBuffer.remaining()).isEqualTo(0);
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mixingBuffer.flip();
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assertThat(createFloatArray(mixingBuffer)).isEqualTo(new float[] {0.5f, -0.125f});
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}
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@Test
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public void mixStereoS16IntoStereoFloat() {
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AudioMixingAlgorithm algorithm = new FloatAudioMixingAlgorithm(AUDIO_FORMAT_STEREO_PCM_FLOAT);
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ByteBuffer mixingBuffer = createByteBuffer(new float[] {0.25f, -0.25f, 0.5f, -0.5f});
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ByteBuffer sourceBuffer =
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createByteBuffer(
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new short[] {
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-16384 /* -0.5f */,
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8192 /* 0.25000762962f */,
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-8192 /* -0.25f */,
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16384 /* 0.50001525925f */
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});
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algorithm.mix(
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sourceBuffer,
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AUDIO_FORMAT_STEREO_PCM_16BIT,
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STEREO_TO_STEREO.scaleBy(0.5f),
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/* frameCount= */ 2,
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mixingBuffer);
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assertWithMessage("Source buffer").that(sourceBuffer.remaining()).isEqualTo(0);
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assertWithMessage("Mixing buffer").that(mixingBuffer.remaining()).isEqualTo(0);
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mixingBuffer.flip();
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assertThat(createFloatArray(mixingBuffer))
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.usingTolerance(1f / Short.MAX_VALUE)
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.containsExactly(new float[] {0f, -0.125f, 0.375f, -0.25f})
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.inOrder();
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}
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@Test
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public void mixMonoS16IntoStereoFloat() {
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AudioMixingAlgorithm algorithm = new FloatAudioMixingAlgorithm(AUDIO_FORMAT_STEREO_PCM_FLOAT);
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ByteBuffer mixingBuffer = createByteBuffer(new float[] {0.25f, -0.25f, 0.5f, -0.5f});
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ByteBuffer sourceBuffer =
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createByteBuffer(new short[] {-16384 /* -0.5f */, 16384 /* 0.50001525925f */});
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algorithm.mix(
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sourceBuffer,
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AUDIO_FORMAT_MONO_PCM_16BIT,
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MONO_TO_STEREO.scaleBy(0.5f),
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/* frameCount= */ 2,
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mixingBuffer);
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assertWithMessage("Source buffer").that(sourceBuffer.remaining()).isEqualTo(0);
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assertWithMessage("Mixing buffer").that(mixingBuffer.remaining()).isEqualTo(0);
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mixingBuffer.flip();
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assertThat(createFloatArray(mixingBuffer))
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.usingTolerance(1f / Short.MAX_VALUE)
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.containsExactly(new float[] {0f, -0.5f, 0.75f, -0.25f})
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.inOrder();
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}
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@Test
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public void mixStereoS16IntoMonoFloat() {
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AudioMixingAlgorithm algorithm = new FloatAudioMixingAlgorithm(AUDIO_FORMAT_MONO_PCM_FLOAT);
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ByteBuffer mixingBuffer = createByteBuffer(new float[] {0.25f, 0.5f});
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ByteBuffer sourceBuffer =
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createByteBuffer(
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new short[] {
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-16384 /* -0.5f */,
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8192 /* 0.25000762962f */,
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-8192 /* -0.25f */,
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16384 /* 0.50001525925f */
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});
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algorithm.mix(
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sourceBuffer,
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AUDIO_FORMAT_STEREO_PCM_16BIT,
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STEREO_TO_MONO.scaleBy(0.5f),
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/* frameCount= */ 2,
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mixingBuffer);
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assertWithMessage("Source buffer").that(sourceBuffer.remaining()).isEqualTo(0);
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assertWithMessage("Mixing buffer").that(mixingBuffer.remaining()).isEqualTo(0);
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mixingBuffer.flip();
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assertThat(createFloatArray(mixingBuffer))
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.usingTolerance(1f / Short.MAX_VALUE)
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.containsExactly(new float[] {0.1875f, 0.5625f})
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.inOrder();
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}
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@Test
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public void mixMonoS16IntoMonoFloat() {
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AudioMixingAlgorithm algorithm = new FloatAudioMixingAlgorithm(AUDIO_FORMAT_MONO_PCM_FLOAT);
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ByteBuffer mixingBuffer = createByteBuffer(new float[] {0.25f, 0.5f});
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ByteBuffer sourceBuffer =
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createByteBuffer(new short[] {-16384 /* -0.5f */, 8192 /* 0.25000762962f */});
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algorithm.mix(
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sourceBuffer,
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AUDIO_FORMAT_MONO_PCM_16BIT,
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MONO_TO_MONO.scaleBy(0.5f),
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/* frameCount= */ 2,
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mixingBuffer);
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assertWithMessage("Source buffer").that(sourceBuffer.remaining()).isEqualTo(0);
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assertWithMessage("Mixing buffer").that(mixingBuffer.remaining()).isEqualTo(0);
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mixingBuffer.flip();
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assertThat(createFloatArray(mixingBuffer))
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.usingTolerance(1f / Short.MAX_VALUE)
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.containsExactly(new float[] {0f, 0.625f})
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.inOrder();
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}
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@Test
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public void doesNotSupportSampleRateConversion() {
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AudioMixingAlgorithm algorithm =
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new FloatAudioMixingAlgorithm(
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new AudioFormat(/* sampleRate= */ 44100, /* channelCount= */ 2, C.ENCODING_PCM_FLOAT));
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assertThat(
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algorithm.supportsSourceAudioFormat(
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new AudioFormat(
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@ -264,6 +84,7 @@ public final class FloatAudioMixingAlgorithmTest {
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AudioMixingAlgorithm algorithm =
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new FloatAudioMixingAlgorithm(
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new AudioFormat(/* sampleRate= */ 44100, /* channelCount= */ 2, C.ENCODING_PCM_FLOAT));
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assertThat(
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algorithm.supportsSourceAudioFormat(
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new AudioFormat(
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@ -275,4 +96,183 @@ public final class FloatAudioMixingAlgorithmTest {
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/* sampleRate= */ 44100, /* channelCount= */ 2, C.ENCODING_PCM_32BIT)))
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.isFalse();
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}
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@Test
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public void mixStereoFloatIntoStereoFloat() {
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AudioMixingAlgorithm algorithm = new FloatAudioMixingAlgorithm(AUDIO_FORMAT_STEREO_PCM_FLOAT);
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ByteBuffer mixingBuffer = createByteBuffer(new float[] {0.25f, -0.25f, 0.5f, -0.5f});
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ByteBuffer sourceBuffer = createByteBuffer(new float[] {-0.5f, 0.25f, -0.25f, 0.5f});
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algorithm.mix(
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sourceBuffer,
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AUDIO_FORMAT_STEREO_PCM_FLOAT,
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STEREO_TO_STEREO.scaleBy(0.5f),
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/* frameCount= */ 2,
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mixingBuffer);
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assertWithMessage("Source buffer").that(sourceBuffer.remaining()).isEqualTo(0);
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assertWithMessage("Mixing buffer").that(mixingBuffer.remaining()).isEqualTo(0);
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mixingBuffer.flip();
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assertThat(createFloatArray(mixingBuffer)).isEqualTo(new float[] {0f, -0.125f, 0.375f, -0.25f});
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}
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@Test
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public void mixMonoFloatIntoStereoFloat() {
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AudioMixingAlgorithm algorithm = new FloatAudioMixingAlgorithm(AUDIO_FORMAT_STEREO_PCM_FLOAT);
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ByteBuffer mixingBuffer = createByteBuffer(new float[] {0.25f, -0.25f, 0.5f, -0.5f});
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ByteBuffer sourceBuffer = createByteBuffer(new float[] {-0.5f, 0.5f});
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algorithm.mix(
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sourceBuffer,
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AUDIO_FORMAT_MONO_PCM_FLOAT,
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MONO_TO_STEREO.scaleBy(0.5f),
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/* frameCount= */ 2,
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mixingBuffer);
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assertWithMessage("Source buffer").that(sourceBuffer.remaining()).isEqualTo(0);
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assertWithMessage("Mixing buffer").that(mixingBuffer.remaining()).isEqualTo(0);
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mixingBuffer.flip();
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assertThat(createFloatArray(mixingBuffer)).isEqualTo(new float[] {0f, -0.5f, 0.75f, -0.25f});
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}
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@Test
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public void mixStereoS16IntoStereoFloat() {
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AudioMixingAlgorithm algorithm = new FloatAudioMixingAlgorithm(AUDIO_FORMAT_STEREO_PCM_FLOAT);
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ByteBuffer mixingBuffer = createByteBuffer(new float[] {0.25f, -0.25f, 0.5f, -0.5f});
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ByteBuffer sourceBuffer =
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createByteBuffer(
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new short[] {
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-16384 /* -0.5f */,
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8192 /* 0.25000762962f */,
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-8192 /* -0.25f */,
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16384 /* 0.50001525925f */
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});
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algorithm.mix(
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sourceBuffer,
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AUDIO_FORMAT_STEREO_PCM_16BIT,
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STEREO_TO_STEREO.scaleBy(0.5f),
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/* frameCount= */ 2,
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mixingBuffer);
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assertWithMessage("Source buffer").that(sourceBuffer.remaining()).isEqualTo(0);
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assertWithMessage("Mixing buffer").that(mixingBuffer.remaining()).isEqualTo(0);
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mixingBuffer.flip();
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assertThat(createFloatArray(mixingBuffer))
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.usingTolerance(1f / Short.MAX_VALUE)
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.containsExactly(new float[] {0f, -0.125f, 0.375f, -0.25f})
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.inOrder();
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}
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@Test
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public void mixMonoS16IntoStereoFloat() {
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AudioMixingAlgorithm algorithm = new FloatAudioMixingAlgorithm(AUDIO_FORMAT_STEREO_PCM_FLOAT);
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ByteBuffer mixingBuffer = createByteBuffer(new float[] {0.25f, -0.25f, 0.5f, -0.5f});
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ByteBuffer sourceBuffer =
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createByteBuffer(new short[] {-16384 /* -0.5f */, 16384 /* 0.50001525925f */});
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algorithm.mix(
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sourceBuffer,
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AUDIO_FORMAT_MONO_PCM_16BIT,
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MONO_TO_STEREO.scaleBy(0.5f),
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/* frameCount= */ 2,
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mixingBuffer);
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assertWithMessage("Source buffer").that(sourceBuffer.remaining()).isEqualTo(0);
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assertWithMessage("Mixing buffer").that(mixingBuffer.remaining()).isEqualTo(0);
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mixingBuffer.flip();
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assertThat(createFloatArray(mixingBuffer))
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.usingTolerance(1f / Short.MAX_VALUE)
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.containsExactly(new float[] {0f, -0.5f, 0.75f, -0.25f})
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.inOrder();
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}
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@Test
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public void mixStereoFloatIntoMonoFloat() {
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AudioMixingAlgorithm algorithm = new FloatAudioMixingAlgorithm(AUDIO_FORMAT_MONO_PCM_FLOAT);
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ByteBuffer mixingBuffer = createByteBuffer(new float[] {0.25f, 0.5f});
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ByteBuffer sourceBuffer = createByteBuffer(new float[] {-0.5f, 0.25f, -0.25f, 0.5f});
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algorithm.mix(
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sourceBuffer,
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AUDIO_FORMAT_STEREO_PCM_FLOAT,
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STEREO_TO_MONO.scaleBy(0.5f),
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/* frameCount= */ 2,
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mixingBuffer);
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assertWithMessage("Source buffer").that(sourceBuffer.remaining()).isEqualTo(0);
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assertWithMessage("Mixing buffer").that(mixingBuffer.remaining()).isEqualTo(0);
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mixingBuffer.flip();
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assertThat(createFloatArray(mixingBuffer)).isEqualTo(new float[] {0.1875f, 0.5625f});
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}
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@Test
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public void mixMonoFloatIntoMonoFloat() {
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AudioMixingAlgorithm algorithm = new FloatAudioMixingAlgorithm(AUDIO_FORMAT_MONO_PCM_FLOAT);
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ByteBuffer mixingBuffer = createByteBuffer(new float[] {0.25f, -0.25f});
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ByteBuffer sourceBuffer = createByteBuffer(new float[] {0.5f, 0.25f});
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algorithm.mix(
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sourceBuffer,
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AUDIO_FORMAT_MONO_PCM_FLOAT,
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MONO_TO_MONO.scaleBy(0.5f),
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/* frameCount= */ 2,
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mixingBuffer);
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assertWithMessage("Source buffer").that(sourceBuffer.remaining()).isEqualTo(0);
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assertWithMessage("Mixing buffer").that(mixingBuffer.remaining()).isEqualTo(0);
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mixingBuffer.flip();
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assertThat(createFloatArray(mixingBuffer)).isEqualTo(new float[] {0.5f, -0.125f});
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}
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@Test
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public void mixStereoS16IntoMonoFloat() {
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AudioMixingAlgorithm algorithm = new FloatAudioMixingAlgorithm(AUDIO_FORMAT_MONO_PCM_FLOAT);
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ByteBuffer mixingBuffer = createByteBuffer(new float[] {0.25f, 0.5f});
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ByteBuffer sourceBuffer =
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createByteBuffer(
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new short[] {
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-16384 /* -0.5f */,
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8192 /* 0.25000762962f */,
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-8192 /* -0.25f */,
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16384 /* 0.50001525925f */
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});
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algorithm.mix(
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sourceBuffer,
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AUDIO_FORMAT_STEREO_PCM_16BIT,
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STEREO_TO_MONO.scaleBy(0.5f),
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/* frameCount= */ 2,
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mixingBuffer);
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assertWithMessage("Source buffer").that(sourceBuffer.remaining()).isEqualTo(0);
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assertWithMessage("Mixing buffer").that(mixingBuffer.remaining()).isEqualTo(0);
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mixingBuffer.flip();
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assertThat(createFloatArray(mixingBuffer))
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.usingTolerance(1f / Short.MAX_VALUE)
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.containsExactly(new float[] {0.1875f, 0.5625f})
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.inOrder();
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}
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@Test
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public void mixMonoS16IntoMonoFloat() {
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AudioMixingAlgorithm algorithm = new FloatAudioMixingAlgorithm(AUDIO_FORMAT_MONO_PCM_FLOAT);
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ByteBuffer mixingBuffer = createByteBuffer(new float[] {0.25f, 0.5f});
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ByteBuffer sourceBuffer =
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createByteBuffer(new short[] {-16384 /* -0.5f */, 8192 /* 0.25000762962f */});
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algorithm.mix(
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sourceBuffer,
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AUDIO_FORMAT_MONO_PCM_16BIT,
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MONO_TO_MONO.scaleBy(0.5f),
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/* frameCount= */ 2,
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mixingBuffer);
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assertWithMessage("Source buffer").that(sourceBuffer.remaining()).isEqualTo(0);
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assertWithMessage("Mixing buffer").that(mixingBuffer.remaining()).isEqualTo(0);
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mixingBuffer.flip();
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assertThat(createFloatArray(mixingBuffer))
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.usingTolerance(1f / Short.MAX_VALUE)
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.containsExactly(new float[] {0f, 0.625f})
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.inOrder();
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}
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}
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