package com.google.android.exoplayer2.extractor.mp3;

import com.google.android.exoplayer2.C;
import com.google.android.exoplayer2.extractor.MpegAudioHeader;
import com.google.android.exoplayer2.extractor.mp3.Mp3Extractor;
import com.google.android.exoplayer2.util.ParsableByteArray;
import com.google.android.exoplayer2.util.Util;

final class VbriSeeker implements Mp3Extractor.Seeker {
    private final long durationUs;
    private final long[] positions;
    private final long[] timesUs;

    public boolean isSeekable() {
        return true;
    }

    public static VbriSeeker create(MpegAudioHeader mpegAudioHeader, ParsableByteArray parsableByteArray, long j, long j2) {
        int i;
        long j3;
        MpegAudioHeader mpegAudioHeader2 = mpegAudioHeader;
        ParsableByteArray parsableByteArray2 = parsableByteArray;
        long j4 = j2;
        parsableByteArray2.skipBytes(10);
        int readInt = parsableByteArray.readInt();
        if (readInt <= 0) {
            return null;
        }
        int i2 = mpegAudioHeader2.sampleRate;
        long scaleLargeTimestamp = Util.scaleLargeTimestamp((long) readInt, C.MICROS_PER_SECOND * ((long) (i2 >= 32000 ? 1152 : 576)), (long) i2);
        int readUnsignedShort = parsableByteArray.readUnsignedShort();
        int readUnsignedShort2 = parsableByteArray.readUnsignedShort();
        int readUnsignedShort3 = parsableByteArray.readUnsignedShort();
        int i3 = 2;
        parsableByteArray2.skipBytes(2);
        long j5 = j + ((long) mpegAudioHeader2.frameSize);
        int i4 = readUnsignedShort + 1;
        long[] jArr = new long[i4];
        long[] jArr2 = new long[i4];
        jArr[0] = 0;
        jArr2[0] = j5;
        int i5 = 1;
        while (i5 < i4) {
            if (readUnsignedShort3 == 1) {
                i = parsableByteArray.readUnsignedByte();
            } else if (readUnsignedShort3 == i3) {
                i = parsableByteArray.readUnsignedShort();
            } else if (readUnsignedShort3 == 3) {
                i = parsableByteArray.readUnsignedInt24();
            } else if (readUnsignedShort3 != 4) {
                return null;
            } else {
                i = parsableByteArray.readUnsignedIntToInt();
            }
            int i6 = i4;
            j5 += (long) (i * readUnsignedShort2);
            int i7 = readUnsignedShort2;
            int i8 = readUnsignedShort3;
            jArr[i5] = (((long) i5) * scaleLargeTimestamp) / ((long) readUnsignedShort);
            if (j4 == -1) {
                j3 = j5;
            } else {
                j3 = Math.min(j4, j5);
            }
            jArr2[i5] = j3;
            i5++;
            ParsableByteArray parsableByteArray3 = parsableByteArray;
            i4 = i6;
            readUnsignedShort2 = i7;
            readUnsignedShort3 = i8;
            i3 = 2;
        }
        return new VbriSeeker(jArr, jArr2, scaleLargeTimestamp);
    }

    private VbriSeeker(long[] jArr, long[] jArr2, long j) {
        this.timesUs = jArr;
        this.positions = jArr2;
        this.durationUs = j;
    }

    public long getPosition(long j) {
        return this.positions[Util.binarySearchFloor(this.timesUs, j, true, true)];
    }

    public long getTimeUs(long j) {
        return this.timesUs[Util.binarySearchFloor(this.positions, j, true, true)];
    }

    public long getDurationUs() {
        return this.durationUs;
    }
}