mirror of
https://github.com/Pinball3D/Rabbit-R1.git
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77 lines
2.9 KiB
Java
77 lines
2.9 KiB
Java
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package androidx.media3.extractor.mp3;
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import android.util.Pair;
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import androidx.media3.common.util.Util;
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import androidx.media3.extractor.SeekMap;
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import androidx.media3.extractor.SeekPoint;
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import androidx.media3.extractor.metadata.id3.MlltFrame;
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import tech.rabbit.r1launcher.BuildConfig;
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/* loaded from: classes2.dex */
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final class MlltSeeker implements Seeker {
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private final long durationUs;
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private final long[] referencePositions;
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private final long[] referenceTimesMs;
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@Override // androidx.media3.extractor.mp3.Seeker
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public long getDataEndPosition() {
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return -1L;
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}
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@Override // androidx.media3.extractor.SeekMap
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public long getDurationUs() {
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return this.durationUs;
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}
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@Override // androidx.media3.extractor.SeekMap
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public boolean isSeekable() {
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return true;
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}
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public static MlltSeeker create(long j, MlltFrame mlltFrame, long j2) {
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int length = mlltFrame.bytesDeviations.length;
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int i = length + 1;
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long[] jArr = new long[i];
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long[] jArr2 = new long[i];
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jArr[0] = j;
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long j3 = 0;
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jArr2[0] = 0;
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for (int i2 = 1; i2 <= length; i2++) {
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int i3 = i2 - 1;
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j += mlltFrame.bytesBetweenReference + mlltFrame.bytesDeviations[i3];
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j3 += mlltFrame.millisecondsBetweenReference + mlltFrame.millisecondsDeviations[i3];
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jArr[i2] = j;
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jArr2[i2] = j3;
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}
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return new MlltSeeker(jArr, jArr2, j2);
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}
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private MlltSeeker(long[] jArr, long[] jArr2, long j) {
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this.referencePositions = jArr;
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this.referenceTimesMs = jArr2;
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this.durationUs = j == -9223372036854775807L ? Util.msToUs(jArr2[jArr2.length - 1]) : j;
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}
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@Override // androidx.media3.extractor.SeekMap
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public SeekMap.SeekPoints getSeekPoints(long j) {
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Pair<Long, Long> linearlyInterpolate = linearlyInterpolate(Util.usToMs(Util.constrainValue(j, 0L, this.durationUs)), this.referenceTimesMs, this.referencePositions);
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return new SeekMap.SeekPoints(new SeekPoint(Util.msToUs(((Long) linearlyInterpolate.first).longValue()), ((Long) linearlyInterpolate.second).longValue()));
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}
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@Override // androidx.media3.extractor.mp3.Seeker
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public long getTimeUs(long j) {
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return Util.msToUs(((Long) linearlyInterpolate(j, this.referencePositions, this.referenceTimesMs).second).longValue());
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}
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private static Pair<Long, Long> linearlyInterpolate(long j, long[] jArr, long[] jArr2) {
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int binarySearchFloor = Util.binarySearchFloor(jArr, j, true, true);
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long j2 = jArr[binarySearchFloor];
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long j3 = jArr2[binarySearchFloor];
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int i = binarySearchFloor + 1;
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if (i == jArr.length) {
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return Pair.create(Long.valueOf(j2), Long.valueOf(j3));
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}
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return Pair.create(Long.valueOf(j), Long.valueOf(((long) ((jArr[i] == j2 ? BuildConfig.SENTRY_SAMPLE_RATE : (j - j2) / (r6 - j2)) * (jArr2[i] - j3))) + j3));
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}
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}
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