package androidx.media3.exoplayer.upstream.experimental;

import androidx.media3.common.util.Assertions;
import androidx.media3.common.util.UnstableApi;
import androidx.media3.common.util.Util;
import java.util.ArrayDeque;
import java.util.TreeSet;

/* JADX INFO: loaded from: classes.dex */
@UnstableApi
public class SlidingPercentileBandwidthStatistic implements BandwidthStatistic {
    public static final int DEFAULT_MAX_SAMPLES_COUNT = 10;
    public static final double DEFAULT_PERCENTILE = 0.5d;
    private long bitrateEstimate;
    private final int maxSampleCount;
    private final double percentile;
    private final ArrayDeque<Sample> samples;
    private final TreeSet<Sample> sortedSamples;
    private double weightSum;

    public static class Sample implements Comparable<Sample> {
        private final long bitrate;
        private final double weight;

        public Sample(long j4, double d6) {
            this.bitrate = j4;
            this.weight = d6;
        }

        @Override // java.lang.Comparable
        public int compareTo(Sample sample) {
            return Util.compareLong(this.bitrate, sample.bitrate);
        }
    }

    public SlidingPercentileBandwidthStatistic() {
        this(10, 0.5d);
    }

    private long calculateBitrateEstimate() {
        if (this.samples.isEmpty()) {
            return Long.MIN_VALUE;
        }
        double d6 = this.weightSum * this.percentile;
        double d7 = 0.0d;
        long j4 = 0;
        double d8 = 0.0d;
        for (Sample sample : this.sortedSamples) {
            double d9 = d7 + (sample.weight / 2.0d);
            if (d9 >= d6) {
                if (j4 == 0) {
                    return sample.bitrate;
                }
                return j4 + ((long) (((d6 - d8) * (sample.bitrate - j4)) / (d9 - d8)));
            }
            j4 = sample.bitrate;
            d8 = d9;
            d7 = (sample.weight / 2.0d) + d9;
        }
        return j4;
    }

    @Override // androidx.media3.exoplayer.upstream.experimental.BandwidthStatistic
    public void addSample(long j4, long j6) {
        while (this.samples.size() >= this.maxSampleCount) {
            Sample sampleRemove = this.samples.remove();
            this.sortedSamples.remove(sampleRemove);
            this.weightSum -= sampleRemove.weight;
        }
        double dSqrt = Math.sqrt(j4);
        Sample sample = new Sample((j4 * 8000000) / j6, dSqrt);
        this.samples.add(sample);
        this.sortedSamples.add(sample);
        this.weightSum += dSqrt;
        this.bitrateEstimate = calculateBitrateEstimate();
    }

    @Override // androidx.media3.exoplayer.upstream.experimental.BandwidthStatistic
    public long getBandwidthEstimate() {
        return this.bitrateEstimate;
    }

    @Override // androidx.media3.exoplayer.upstream.experimental.BandwidthStatistic
    public void reset() {
        this.samples.clear();
        this.sortedSamples.clear();
        this.weightSum = 0.0d;
        this.bitrateEstimate = Long.MIN_VALUE;
    }

    public SlidingPercentileBandwidthStatistic(int i6, double d6) {
        Assertions.checkArgument(d6 >= 0.0d && d6 <= 1.0d);
        this.maxSampleCount = i6;
        this.percentile = d6;
        this.samples = new ArrayDeque<>();
        this.sortedSamples = new TreeSet<>();
        this.bitrateEstimate = Long.MIN_VALUE;
    }
}