| /* |
| * Copyright (C) 2010 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.android.cts.verifier.audioquality.experiments; |
| |
| import com.android.cts.verifier.R; |
| import com.android.cts.verifier.audioquality.AudioQualityVerifierActivity; |
| import com.android.cts.verifier.audioquality.CalibrateVolumeActivity; |
| import com.android.cts.verifier.audioquality.Native; |
| import com.android.cts.verifier.audioquality.Utils; |
| |
| import android.content.Context; |
| |
| /** |
| * Experiment to verify that the sound level has been correctly set. |
| * |
| * This experiment should be run first; if it fails the others may |
| * fail also. |
| */ |
| public class SoundLevelExperiment extends LoopbackExperiment { |
| private static final float ONSET_THRESH = 10.0f; |
| private static final int DURATION = 2; |
| private static final float TOLERANCE = 1.05f; |
| private static final float FREQ = 625.0f; |
| private static final float RAMP = 0.0f; |
| |
| public SoundLevelExperiment() { |
| super(true); |
| } |
| |
| @Override |
| protected String lookupName(Context context) { |
| return context.getString(R.string.aq_sound_level_exp); |
| } |
| |
| @Override |
| protected byte[] getStim(Context context) { |
| if (CalibrateVolumeActivity.USE_PINK) { |
| return Utils.getPinkNoise(context, CalibrateVolumeActivity.OUTPUT_AMPL, DURATION); |
| } else { |
| short[] sinusoid = mNative.generateSinusoid(FREQ, DURATION, |
| AudioQualityVerifierActivity.SAMPLE_RATE, CalibrateVolumeActivity.OUTPUT_AMPL, RAMP); |
| return Utils.shortToByteArray(sinusoid); |
| } |
| } |
| |
| @Override |
| protected void compare(byte[] stim, byte[] record) { |
| short[] pcm = Utils.byteToShortArray(record); |
| float[] results = mNative.measureRms(pcm, AudioQualityVerifierActivity.SAMPLE_RATE, ONSET_THRESH); |
| float rms = results[Native.MEASURE_RMS_RMS]; |
| float duration = results[Native.MEASURE_RMS_DURATION]; |
| String delta; |
| if (rms * TOLERANCE < CalibrateVolumeActivity.TARGET_RMS) { |
| setScore(getString(R.string.aq_fail)); |
| delta = getString(R.string.aq_status_low); |
| } else if (rms > CalibrateVolumeActivity.TARGET_RMS * TOLERANCE) { |
| setScore(getString(R.string.aq_fail)); |
| delta = getString(R.string.aq_status_high); |
| } else { |
| setScore(getString(R.string.aq_pass)); |
| delta = getString(R.string.aq_status_ok); |
| } |
| setReport(delta + ".\n" + String.format(getString(R.string.aq_level_report), |
| rms, CalibrateVolumeActivity.TARGET_RMS, |
| 100.0f * (TOLERANCE - 1.0f), duration)); |
| } |
| } |