mirror of
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259 lines
10 KiB
Java
259 lines
10 KiB
Java
package com.google.android.exoplayer2.source;
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import android.net.Uri;
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import com.google.android.exoplayer2.Format;
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import com.google.android.exoplayer2.FormatHolder;
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import com.google.android.exoplayer2.MediaItem;
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import com.google.android.exoplayer2.SeekParameters;
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import com.google.android.exoplayer2.decoder.DecoderInputBuffer;
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import com.google.android.exoplayer2.source.MediaPeriod;
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import com.google.android.exoplayer2.source.MediaSource;
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import com.google.android.exoplayer2.trackselection.ExoTrackSelection;
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import com.google.android.exoplayer2.upstream.Allocator;
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import com.google.android.exoplayer2.upstream.TransferListener;
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import com.google.android.exoplayer2.util.Assertions;
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import com.google.android.exoplayer2.util.Util;
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import java.util.ArrayList;
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/* loaded from: classes2.dex */
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public final class SilenceMediaSource extends BaseMediaSource {
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private static final int CHANNEL_COUNT = 2;
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private static final Format FORMAT;
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public static final String MEDIA_ID = "SilenceMediaSource";
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private static final MediaItem MEDIA_ITEM;
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private static final int PCM_ENCODING = 2;
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private static final int SAMPLE_RATE_HZ = 44100;
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private static final byte[] SILENCE_SAMPLE;
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private final long durationUs;
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private final MediaItem mediaItem;
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@Override // com.google.android.exoplayer2.source.MediaSource
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public MediaItem getMediaItem() {
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return this.mediaItem;
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}
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@Override // com.google.android.exoplayer2.source.MediaSource
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public void maybeThrowSourceInfoRefreshError() {
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}
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@Override // com.google.android.exoplayer2.source.MediaSource
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public void releasePeriod(MediaPeriod mediaPeriod) {
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}
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@Override // com.google.android.exoplayer2.source.BaseMediaSource
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protected void releaseSourceInternal() {
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}
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/* loaded from: classes2.dex */
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public static final class Factory {
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private long durationUs;
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private Object tag;
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public Factory setDurationUs(long j) {
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this.durationUs = j;
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return this;
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}
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public Factory setTag(Object obj) {
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this.tag = obj;
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return this;
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}
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public SilenceMediaSource createMediaSource() {
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Assertions.checkState(this.durationUs > 0);
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return new SilenceMediaSource(this.durationUs, SilenceMediaSource.MEDIA_ITEM.buildUpon().setTag(this.tag).build());
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}
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}
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static {
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Format build = new Format.Builder().setSampleMimeType("audio/raw").setChannelCount(2).setSampleRate(SAMPLE_RATE_HZ).setPcmEncoding(2).build();
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FORMAT = build;
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MEDIA_ITEM = new MediaItem.Builder().setMediaId("SilenceMediaSource").setUri(Uri.EMPTY).setMimeType(build.sampleMimeType).build();
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SILENCE_SAMPLE = new byte[Util.getPcmFrameSize(2, 2) * 1024];
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}
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public SilenceMediaSource(long j) {
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this(j, MEDIA_ITEM);
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}
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private SilenceMediaSource(long j, MediaItem mediaItem) {
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Assertions.checkArgument(j >= 0);
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this.durationUs = j;
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this.mediaItem = mediaItem;
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}
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@Override // com.google.android.exoplayer2.source.BaseMediaSource
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protected void prepareSourceInternal(TransferListener transferListener) {
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refreshSourceInfo(new SinglePeriodTimeline(this.durationUs, true, false, false, (Object) null, this.mediaItem));
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}
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@Override // com.google.android.exoplayer2.source.MediaSource
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public MediaPeriod createPeriod(MediaSource.MediaPeriodId mediaPeriodId, Allocator allocator, long j) {
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return new SilenceMediaPeriod(this.durationUs);
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}
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/* loaded from: classes2.dex */
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private static final class SilenceMediaPeriod implements MediaPeriod {
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private static final TrackGroupArray TRACKS = new TrackGroupArray(new TrackGroup(SilenceMediaSource.FORMAT));
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private final long durationUs;
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private final ArrayList<SampleStream> sampleStreams = new ArrayList<>();
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@Override // com.google.android.exoplayer2.source.MediaPeriod, com.google.android.exoplayer2.source.SequenceableLoader
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public boolean continueLoading(long j) {
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return false;
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}
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@Override // com.google.android.exoplayer2.source.MediaPeriod
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public void discardBuffer(long j, boolean z) {
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}
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@Override // com.google.android.exoplayer2.source.MediaPeriod, com.google.android.exoplayer2.source.SequenceableLoader
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public long getBufferedPositionUs() {
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return Long.MIN_VALUE;
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}
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@Override // com.google.android.exoplayer2.source.MediaPeriod, com.google.android.exoplayer2.source.SequenceableLoader
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public long getNextLoadPositionUs() {
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return Long.MIN_VALUE;
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}
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@Override // com.google.android.exoplayer2.source.MediaPeriod
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public TrackGroupArray getTrackGroups() {
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return TRACKS;
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}
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@Override // com.google.android.exoplayer2.source.MediaPeriod, com.google.android.exoplayer2.source.SequenceableLoader
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public boolean isLoading() {
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return false;
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}
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@Override // com.google.android.exoplayer2.source.MediaPeriod
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public void maybeThrowPrepareError() {
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}
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@Override // com.google.android.exoplayer2.source.MediaPeriod
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public long readDiscontinuity() {
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return -9223372036854775807L;
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}
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@Override // com.google.android.exoplayer2.source.MediaPeriod, com.google.android.exoplayer2.source.SequenceableLoader
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public void reevaluateBuffer(long j) {
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}
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public SilenceMediaPeriod(long j) {
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this.durationUs = j;
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}
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@Override // com.google.android.exoplayer2.source.MediaPeriod
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public void prepare(MediaPeriod.Callback callback, long j) {
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callback.onPrepared(this);
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}
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@Override // com.google.android.exoplayer2.source.MediaPeriod
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public long selectTracks(ExoTrackSelection[] exoTrackSelectionArr, boolean[] zArr, SampleStream[] sampleStreamArr, boolean[] zArr2, long j) {
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long constrainSeekPosition = constrainSeekPosition(j);
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for (int i = 0; i < exoTrackSelectionArr.length; i++) {
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SampleStream sampleStream = sampleStreamArr[i];
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if (sampleStream != null && (exoTrackSelectionArr[i] == null || !zArr[i])) {
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this.sampleStreams.remove(sampleStream);
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sampleStreamArr[i] = null;
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}
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if (sampleStreamArr[i] == null && exoTrackSelectionArr[i] != null) {
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SilenceSampleStream silenceSampleStream = new SilenceSampleStream(this.durationUs);
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silenceSampleStream.seekTo(constrainSeekPosition);
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this.sampleStreams.add(silenceSampleStream);
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sampleStreamArr[i] = silenceSampleStream;
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zArr2[i] = true;
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}
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}
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return constrainSeekPosition;
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}
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@Override // com.google.android.exoplayer2.source.MediaPeriod
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public long seekToUs(long j) {
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long constrainSeekPosition = constrainSeekPosition(j);
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for (int i = 0; i < this.sampleStreams.size(); i++) {
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((SilenceSampleStream) this.sampleStreams.get(i)).seekTo(constrainSeekPosition);
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}
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return constrainSeekPosition;
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}
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@Override // com.google.android.exoplayer2.source.MediaPeriod
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public long getAdjustedSeekPositionUs(long j, SeekParameters seekParameters) {
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return constrainSeekPosition(j);
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}
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private long constrainSeekPosition(long j) {
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return Util.constrainValue(j, 0L, this.durationUs);
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}
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}
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/* loaded from: classes2.dex */
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private static final class SilenceSampleStream implements SampleStream {
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private final long durationBytes;
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private long positionBytes;
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private boolean sentFormat;
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@Override // com.google.android.exoplayer2.source.SampleStream
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public boolean isReady() {
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return true;
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}
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@Override // com.google.android.exoplayer2.source.SampleStream
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public void maybeThrowError() {
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}
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public SilenceSampleStream(long j) {
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this.durationBytes = SilenceMediaSource.getAudioByteCount(j);
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seekTo(0L);
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}
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public void seekTo(long j) {
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this.positionBytes = Util.constrainValue(SilenceMediaSource.getAudioByteCount(j), 0L, this.durationBytes);
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}
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@Override // com.google.android.exoplayer2.source.SampleStream
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public int readData(FormatHolder formatHolder, DecoderInputBuffer decoderInputBuffer, int i) {
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if (!this.sentFormat || (i & 2) != 0) {
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formatHolder.format = SilenceMediaSource.FORMAT;
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this.sentFormat = true;
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return -5;
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}
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long j = this.durationBytes;
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long j2 = this.positionBytes;
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long j3 = j - j2;
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if (j3 != 0) {
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decoderInputBuffer.timeUs = SilenceMediaSource.getAudioPositionUs(j2);
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decoderInputBuffer.addFlag(1);
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int min = (int) Math.min(SilenceMediaSource.SILENCE_SAMPLE.length, j3);
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if ((i & 4) == 0) {
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decoderInputBuffer.ensureSpaceForWrite(min);
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decoderInputBuffer.data.put(SilenceMediaSource.SILENCE_SAMPLE, 0, min);
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}
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if ((i & 1) == 0) {
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this.positionBytes += min;
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}
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return -4;
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}
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decoderInputBuffer.addFlag(4);
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return -4;
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}
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@Override // com.google.android.exoplayer2.source.SampleStream
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public int skipData(long j) {
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long j2 = this.positionBytes;
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seekTo(j);
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return (int) ((this.positionBytes - j2) / SilenceMediaSource.SILENCE_SAMPLE.length);
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}
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}
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/* JADX INFO: Access modifiers changed from: private */
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public static long getAudioByteCount(long j) {
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return Util.getPcmFrameSize(2, 2) * ((j * 44100) / 1000000);
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}
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/* JADX INFO: Access modifiers changed from: private */
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public static long getAudioPositionUs(long j) {
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return ((j / Util.getPcmFrameSize(2, 2)) * 1000000) / 44100;
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}
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}
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