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/*
* Copyright (C) 2013 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 android.speech.tts;
import android.text.TextUtils;
/**
* Writes data about a given speech synthesis request to the event logs. The data that is logged
* includes the calling app, length of the utterance, speech rate / pitch, the latency, and overall
* time taken.
*/
class EventLogger extends AbstractEventLogger {
private final SynthesisRequest mRequest;
EventLogger(SynthesisRequest request, int callerUid, int callerPid, String serviceApp) {
super(callerUid, callerPid, serviceApp);
mRequest = request;
}
@Override
protected void logFailure(int statusCode) {
// We don't report stopped syntheses because their overall
// total time spent will be inaccurate (will not correlate with
// the length of the utterance).
if (statusCode != TextToSpeech.STOPPED) {
EventLogTags.writeTtsSpeakFailure(mServiceApp, mCallerUid, mCallerPid,
getUtteranceLength(), getLocaleString(),
mRequest.getSpeechRate(), mRequest.getPitch());
}
}
@Override
protected void logSuccess(long audioLatency, long engineLatency, long engineTotal) {
EventLogTags.writeTtsSpeakSuccess(mServiceApp, mCallerUid, mCallerPid,
getUtteranceLength(), getLocaleString(),
mRequest.getSpeechRate(), mRequest.getPitch(),
engineLatency, engineTotal, audioLatency);
}
/**
* @return the length of the utterance for the given synthesis, 0
* if the utterance was {@code null}.
*/
private int getUtteranceLength() {
final String utterance = mRequest.getText();
return utterance == null ? 0 : utterance.length();
}
/**
* Returns a formatted locale string from the synthesis params of the
* form lang-country-variant.
*/
private String getLocaleString() {
StringBuilder sb = new StringBuilder(mRequest.getLanguage());
if (!TextUtils.isEmpty(mRequest.getCountry())) {
sb.append('-');
sb.append(mRequest.getCountry());
if (!TextUtils.isEmpty(mRequest.getVariant())) {
sb.append('-');
sb.append(mRequest.getVariant());
}
}
return sb.toString();
}
}
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