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Fix voice announcement rounding problem

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We extracted integral parts before rounding, but String.format does
rounding which caused occasional issues. To alleviate, we need to round
before passing to String.format. All this rounding logic has now been
moved into appendDecimalUnit, and tests have been added to check that
rounding works correctly.

Fixes: #1285
This commit is contained in:
William Pettersson
2022-06-16 17:18:01 +01:00
committed by Dennis Guse
parent 895a5c2b2a
commit 128b95cd83
2 changed files with 65 additions and 22 deletions
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src/main/java/de/dennisguse/opentracks/services/announcement/VoiceAnnouncementUtils.java
+17 -22
View File
@@ -72,12 +72,9 @@ class VoiceAnnouncementUtils {
if (shouldVoiceAnnounceTotalDistance()) {
builder.append(context.getString(R.string.total_distance));
long distanceIntegerPart = (long) distanceInUnit;
// Extract the decimal part
String distanceFractionalPart = String.format("%.2f", (distanceInUnit - distanceIntegerPart)).substring(2);
// Units should always be english singular for TTS.
// See https://developer.android.com/reference/android/text/style/TtsSpan?hl=en#TYPE_MEASURE
appendDecimalUnit(builder, context.getResources().getQuantityString(distanceId, getQuantityCount(distanceInUnit), distanceInUnit), distanceIntegerPart, distanceFractionalPart, unitDistanceTTS);
appendDecimalUnit(builder, context.getResources().getQuantityString(distanceId, getQuantityCount(distanceInUnit), distanceInUnit), distanceInUnit, 2, unitDistanceTTS);
// Punctuation helps introduce natural pauses in TTS
builder.append(".");
}
@@ -95,27 +92,17 @@ class VoiceAnnouncementUtils {
if (isReportSpeed) {
if (shouldVoiceAnnounceAverageSpeedPace()) {
double speedInUnit = distancePerTime.to(unitSystem);
builder.append(" ")
.append(context.getString(R.string.speed));
long speedIntegerPart = (long) speedInUnit;
// Extract the decimal part
String speedFractionalPart = String.format("%.1f", (speedInUnit - speedIntegerPart)).substring(2);
appendDecimalUnit(builder, context.getResources().getQuantityString(speedId, getQuantityCount(speedInUnit), speedInUnit), speedIntegerPart, speedFractionalPart, unitSpeedTTS);
appendDecimalUnit(builder, context.getResources().getQuantityString(speedId, getQuantityCount(speedInUnit), speedInUnit), speedInUnit, 1, unitSpeedTTS);
builder.append(".");
}
if (shouldVoiceAnnounceLapSpeedPace() && currentDistancePerTime != null) {
double currentDistancePerTimeInUnit = currentDistancePerTime.to(unitSystem);
if (currentDistancePerTimeInUnit > 0) {
builder.append(" ")
.append(context.getString(R.string.lap_speed));
long currentDistanceIntegerPart = (long) currentDistancePerTimeInUnit;
// Extract the decimal part
String currentDistanceFractionalPart = String.format("%.1f", (currentDistancePerTimeInUnit - currentDistanceIntegerPart)).substring(2);
appendDecimalUnit(builder, context.getResources().getQuantityString(speedId, getQuantityCount(currentDistancePerTimeInUnit), currentDistancePerTimeInUnit), currentDistanceIntegerPart, currentDistanceFractionalPart, unitSpeedTTS);
appendDecimalUnit(builder, context.getResources().getQuantityString(speedId, getQuantityCount(currentDistancePerTimeInUnit), currentDistancePerTimeInUnit), currentDistancePerTimeInUnit, 1, unitSpeedTTS);
builder.append(".");
}
}
@@ -171,26 +158,34 @@ class VoiceAnnouncementUtils {
int seconds = (int) (duration.getSeconds() % 60);
if (hours > 0) {
appendDecimalUnit(builder, context.getResources().getQuantityString(R.plurals.voiceHours, hours, hours), hours, null, "hour");
appendDecimalUnit(builder, context.getResources().getQuantityString(R.plurals.voiceHours, hours, hours), hours, 0, "hour");
}
if (minutes > 0) {
appendDecimalUnit(builder, context.getResources().getQuantityString(R.plurals.voiceMinutes, minutes, minutes), minutes, null, "minute");
appendDecimalUnit(builder, context.getResources().getQuantityString(R.plurals.voiceMinutes, minutes, minutes), minutes, 0, "minute");
}
if (seconds > 0 || duration.isZero()) {
appendDecimalUnit(builder, context.getResources().getQuantityString(R.plurals.voiceSeconds, seconds, seconds), seconds, null, "second");
appendDecimalUnit(builder, context.getResources().getQuantityString(R.plurals.voiceSeconds, seconds, seconds), seconds, 0, "second");
}
}
/**
* Speaks as: 98.14 [UNIT] - ninety eight point one four [UNIT with correct plural form]
*
* @param number The number to speak
* @param precision The number of decimal places to announce
*/
private static void appendDecimalUnit(@NonNull SpannableStringBuilder builder, @NonNull String localizedText, long integerPart, @Nullable String fractionalPart, @NonNull String unit) {
private static void appendDecimalUnit(@NonNull SpannableStringBuilder builder, @NonNull String localizedText, double number, int precision, @NonNull String unit) {
TtsSpan.MeasureBuilder measureBuilder = new TtsSpan.MeasureBuilder()
.setUnit(unit);
if (fractionalPart == null) {
measureBuilder.setNumber(integerPart);
if (precision == 0) {
measureBuilder.setNumber((long)number);
} else {
// Round before extracting integral and decimal parts
double number = Math.round(Math.pow(10, precision) * number) / Math.pow(10.0, precision);
long integerPart = (long) number;
// Extract the decimal part
String fractionalPart = String.format("%." + precision + "f", (number - integerPart)).substring(2);
measureBuilder.setIntegerPart(integerPart)
.setFractionalPart(fractionalPart);
}