Add CTS test for AudioTrack float playback
Bug: 15720368
Change-Id: I577f113d64e1f7d302430601c11704a42c65a86e
diff --git a/tests/tests/media/src/android/media/cts/AudioTrackTest.java b/tests/tests/media/src/android/media/cts/AudioTrackTest.java
index b076e6b..c14e42b 100644
--- a/tests/tests/media/src/android/media/cts/AudioTrackTest.java
+++ b/tests/tests/media/src/android/media/cts/AudioTrackTest.java
@@ -1322,6 +1322,16 @@
return vai;
}
+ public static float[] createSoundDataInFloatArray(int bufferSize, final int sampleRate,
+ double frequency) {
+ final double rad = 2 * Math.PI * frequency / sampleRate;
+ float[] vaf = new float[bufferSize];
+ for (int j = 0; j < vaf.length; j++) {
+ vaf[j] = (float) (Math.sin(j * rad));
+ }
+ return vaf;
+ }
+
public void testPlayStreamData() throws Exception {
// constants for test
final String TEST_NAME = "testPlayStreamData";
@@ -1359,6 +1369,60 @@
track.release();
}
+ public void testPlayStreamFloat() throws Exception {
+ // constants for test
+ final String TEST_NAME = "testPlayStreamFloat";
+ final int TEST_SR_ARRAY[] = {
+ 22050,
+ 44100,
+ 48000,
+ };
+ final int TEST_CONF_ARRAY[] = {
+ AudioFormat.CHANNEL_OUT_MONO,
+ AudioFormat.CHANNEL_OUT_STEREO,
+ };
+ final int TEST_FORMAT = AudioFormat.ENCODING_PCM_FLOAT;
+ final int TEST_MODE = AudioTrack.MODE_STREAM;
+ final int TEST_STREAM_TYPE = AudioManager.STREAM_MUSIC;
+
+ double frequency = 800; // frequency changes for each test
+ for (int TEST_SR : TEST_SR_ARRAY) {
+ for (int TEST_CONF : TEST_CONF_ARRAY) {
+ // -------- initialization --------------
+ int minBufferSize = AudioTrack.getMinBufferSize(TEST_SR, TEST_CONF, TEST_FORMAT);
+ int bufferSize = 3 * minBufferSize;
+ // Note: stereo will have twice the frequency
+ float data[] = createSoundDataInFloatArray(bufferSize, TEST_SR,
+ frequency);
+ AudioTrack track = new AudioTrack(TEST_STREAM_TYPE, TEST_SR,
+ TEST_CONF, TEST_FORMAT, minBufferSize, TEST_MODE);
+ // -------- test --------------
+ assertTrue(TEST_NAME, track.getState() == AudioTrack.STATE_INITIALIZED);
+ boolean hasPlayed = false;
+ int written = 0;
+ while (written < data.length) {
+ if (data.length - written <= minBufferSize) {
+ written += track.write(data, written, data.length - written,
+ AudioTrack.WRITE_BLOCKING);
+ } else {
+ written += track.write(data, written, minBufferSize,
+ AudioTrack.WRITE_BLOCKING);
+ if (!hasPlayed) {
+ track.play();
+ hasPlayed = true;
+ }
+ }
+ }
+ Thread.sleep(WAIT_MSEC);
+ track.stop();
+ Thread.sleep(WAIT_MSEC);
+ // -------- tear down --------------
+ track.release();
+ frequency += 200; // increment test tone frequency
+ }
+ }
+ }
+
public void testGetTimestamp() throws Exception {
// constants for test
final String TEST_NAME = "testGetTimestamp";
