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Add lyrics offset time support

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Some refactoring and formatting
This commit is contained in:
tkashkin 2017-07-08 04:52:35 +03:00
commit 3122923d5f
3 changed files with 59 additions and 30 deletions
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10
app/src/main/java/com/kabouzeid/gramophone/model/lyrics/AbsSynchronizedLyrics.java
View file

@ -3,9 +3,17 @@ package com.kabouzeid.gramophone.model.lyrics;
import android.util.SparseArray;
public abstract class AbsSynchronizedLyrics {
private static final int TIME_OFFSET_MS = 500; // time adjustment to display line before it actually starts
public final SparseArray<String> lines = new SparseArray<>();
public boolean isValid = false;
public int offset = 0;
/**
* @param data Lyrics string
* @param justCheck Set isValid = true and stop parsing if lyrics appears to be valid
* and has at least 1 line
*/
public static AbsSynchronizedLyrics parse(String data, boolean justCheck) {
return new SynchronizedLyricsLRC(data, justCheck); // no another formats at the moment
}
@ -20,7 +28,7 @@ public abstract class AbsSynchronizedLyrics {
}
public String getLine(int time) {
time += 500; // small time adjustment to display line before it actually starts
time += offset + AbsSynchronizedLyrics.TIME_OFFSET_MS;
int lastLineTime = lines.keyAt(0);

64
app/src/main/java/com/kabouzeid/gramophone/model/lyrics/SynchronizedLyricsLRC.java
View file

@ -4,9 +4,18 @@ import java.util.regex.Matcher;
import java.util.regex.Pattern;
public class SynchronizedLyricsLRC extends AbsSynchronizedLyrics {
private static Pattern LRC_LINE_PATTERN = Pattern.compile("((?:\\[.*?\\])+)(.*)");
private static Pattern LRC_TIME_PATTERN = Pattern.compile("\\[(\\d+):(\\d{2}(?:\\.\\d+)?)\\]");
private static final Pattern LRC_LINE_PATTERN = Pattern.compile("((?:\\[.*?\\])+)(.*)");
private static final Pattern LRC_TIME_PATTERN = Pattern.compile("\\[(\\d+):(\\d{2}(?:\\.\\d+)?)\\]");
private static final Pattern LRC_ATTRIBUTE_PATTERN = Pattern.compile("\\[(\\D+):(.+)\\]");
private static final float LRC_SECONDS_TO_MS_MULTIPLIER = 1000f;
private static final int LRC_MINUTES_TO_MS_MULTIPLIER = 60000;
/**
* @param data Lyrics string
* @param justCheck Set isValid = true and stop parsing if lyrics appears to be valid
* and has at least 1 line
*/
public SynchronizedLyricsLRC(String data, boolean justCheck) {
if (data == null || data.isEmpty()) {
return;
@ -20,27 +29,42 @@ public class SynchronizedLyricsLRC extends AbsSynchronizedLyrics {
continue;
}
Matcher matcher = SynchronizedLyricsLRC.LRC_LINE_PATTERN.matcher(line);
if (matcher.find()) {
String time = matcher.group(1);
String text = matcher.group(2);
Matcher timeMatcher = SynchronizedLyricsLRC.LRC_TIME_PATTERN.matcher(time);
while (timeMatcher.find()) {
int m = 0;
float s = 0f;
try {
m = Integer.parseInt(timeMatcher.group(1));
s = Float.parseFloat(timeMatcher.group(2));
} catch (NumberFormatException ex) {
ex.printStackTrace();
Matcher attrMatcher = SynchronizedLyricsLRC.LRC_ATTRIBUTE_PATTERN.matcher(line);
if (attrMatcher.find()) {
try {
String attr = attrMatcher.group(1).toLowerCase().trim();
String value = attrMatcher.group(2).toLowerCase().trim();
switch (attr) {
case "offset":
this.offset = Integer.parseInt(value);
break;
}
int ms = (int) (s * 1000f) + m * 60000;
} catch (Exception ex) {
ex.printStackTrace();
}
} else {
Matcher matcher = SynchronizedLyricsLRC.LRC_LINE_PATTERN.matcher(line);
if (matcher.find()) {
String time = matcher.group(1);
String text = matcher.group(2);
this.isValid = true;
if (justCheck) return;
Matcher timeMatcher = SynchronizedLyricsLRC.LRC_TIME_PATTERN.matcher(time);
while (timeMatcher.find()) {
int m = 0;
float s = 0f;
try {
m = Integer.parseInt(timeMatcher.group(1));
s = Float.parseFloat(timeMatcher.group(2));
} catch (NumberFormatException ex) {
ex.printStackTrace();
}
int ms = (int) (s * LRC_SECONDS_TO_MS_MULTIPLIER) + m * LRC_MINUTES_TO_MS_MULTIPLIER;
this.lines.append(ms, text);
this.isValid = true;
if (justCheck) return;
this.lines.append(ms, text);
}
}
}
}