Rabbit-R1/switch port/java/sources/androidx/media3/exoplayer/source/SilenceMediaSource.java
2024-05-21 17:08:36 -04:00

260 lines
10 KiB
Java

package androidx.media3.exoplayer.source;
import android.net.Uri;
import androidx.media3.common.Format;
import androidx.media3.common.MediaItem;
import androidx.media3.common.TrackGroup;
import androidx.media3.common.util.Assertions;
import androidx.media3.common.util.Util;
import androidx.media3.datasource.TransferListener;
import androidx.media3.decoder.DecoderInputBuffer;
import androidx.media3.exoplayer.FormatHolder;
import androidx.media3.exoplayer.SeekParameters;
import androidx.media3.exoplayer.source.MediaPeriod;
import androidx.media3.exoplayer.source.MediaSource;
import androidx.media3.exoplayer.trackselection.ExoTrackSelection;
import androidx.media3.exoplayer.upstream.Allocator;
import java.util.ArrayList;
/* loaded from: classes2.dex */
public final class SilenceMediaSource extends BaseMediaSource {
private static final int CHANNEL_COUNT = 2;
private static final Format FORMAT;
public static final String MEDIA_ID = "SilenceMediaSource";
private static final MediaItem MEDIA_ITEM;
private static final int PCM_ENCODING = 2;
private static final int SAMPLE_RATE_HZ = 44100;
private static final byte[] SILENCE_SAMPLE;
private final long durationUs;
private final MediaItem mediaItem;
@Override // androidx.media3.exoplayer.source.MediaSource
public MediaItem getMediaItem() {
return this.mediaItem;
}
@Override // androidx.media3.exoplayer.source.MediaSource
public void maybeThrowSourceInfoRefreshError() {
}
@Override // androidx.media3.exoplayer.source.MediaSource
public void releasePeriod(MediaPeriod mediaPeriod) {
}
@Override // androidx.media3.exoplayer.source.BaseMediaSource
protected void releaseSourceInternal() {
}
/* loaded from: classes2.dex */
public static final class Factory {
private long durationUs;
private Object tag;
public Factory setDurationUs(long j) {
this.durationUs = j;
return this;
}
public Factory setTag(Object obj) {
this.tag = obj;
return this;
}
public SilenceMediaSource createMediaSource() {
Assertions.checkState(this.durationUs > 0);
return new SilenceMediaSource(this.durationUs, SilenceMediaSource.MEDIA_ITEM.buildUpon().setTag(this.tag).build());
}
}
static {
Format build = new Format.Builder().setSampleMimeType("audio/raw").setChannelCount(2).setSampleRate(SAMPLE_RATE_HZ).setPcmEncoding(2).build();
FORMAT = build;
MEDIA_ITEM = new MediaItem.Builder().setMediaId("SilenceMediaSource").setUri(Uri.EMPTY).setMimeType(build.sampleMimeType).build();
SILENCE_SAMPLE = new byte[Util.getPcmFrameSize(2, 2) * 1024];
}
public SilenceMediaSource(long j) {
this(j, MEDIA_ITEM);
}
private SilenceMediaSource(long j, MediaItem mediaItem) {
Assertions.checkArgument(j >= 0);
this.durationUs = j;
this.mediaItem = mediaItem;
}
@Override // androidx.media3.exoplayer.source.BaseMediaSource
protected void prepareSourceInternal(TransferListener transferListener) {
refreshSourceInfo(new SinglePeriodTimeline(this.durationUs, true, false, false, (Object) null, this.mediaItem));
}
@Override // androidx.media3.exoplayer.source.MediaSource
public MediaPeriod createPeriod(MediaSource.MediaPeriodId mediaPeriodId, Allocator allocator, long j) {
return new SilenceMediaPeriod(this.durationUs);
}
/* loaded from: classes2.dex */
private static final class SilenceMediaPeriod implements MediaPeriod {
private static final TrackGroupArray TRACKS = new TrackGroupArray(new TrackGroup(SilenceMediaSource.FORMAT));
private final long durationUs;
private final ArrayList<SampleStream> sampleStreams = new ArrayList<>();
@Override // androidx.media3.exoplayer.source.MediaPeriod, androidx.media3.exoplayer.source.SequenceableLoader
public boolean continueLoading(long j) {
return false;
}
@Override // androidx.media3.exoplayer.source.MediaPeriod
public void discardBuffer(long j, boolean z) {
}
@Override // androidx.media3.exoplayer.source.MediaPeriod, androidx.media3.exoplayer.source.SequenceableLoader
public long getBufferedPositionUs() {
return Long.MIN_VALUE;
}
@Override // androidx.media3.exoplayer.source.MediaPeriod, androidx.media3.exoplayer.source.SequenceableLoader
public long getNextLoadPositionUs() {
return Long.MIN_VALUE;
}
@Override // androidx.media3.exoplayer.source.MediaPeriod
public TrackGroupArray getTrackGroups() {
return TRACKS;
}
@Override // androidx.media3.exoplayer.source.MediaPeriod, androidx.media3.exoplayer.source.SequenceableLoader
public boolean isLoading() {
return false;
}
@Override // androidx.media3.exoplayer.source.MediaPeriod
public void maybeThrowPrepareError() {
}
@Override // androidx.media3.exoplayer.source.MediaPeriod
public long readDiscontinuity() {
return -9223372036854775807L;
}
@Override // androidx.media3.exoplayer.source.MediaPeriod, androidx.media3.exoplayer.source.SequenceableLoader
public void reevaluateBuffer(long j) {
}
public SilenceMediaPeriod(long j) {
this.durationUs = j;
}
@Override // androidx.media3.exoplayer.source.MediaPeriod
public void prepare(MediaPeriod.Callback callback, long j) {
callback.onPrepared(this);
}
@Override // androidx.media3.exoplayer.source.MediaPeriod
public long selectTracks(ExoTrackSelection[] exoTrackSelectionArr, boolean[] zArr, SampleStream[] sampleStreamArr, boolean[] zArr2, long j) {
long constrainSeekPosition = constrainSeekPosition(j);
for (int i = 0; i < exoTrackSelectionArr.length; i++) {
SampleStream sampleStream = sampleStreamArr[i];
if (sampleStream != null && (exoTrackSelectionArr[i] == null || !zArr[i])) {
this.sampleStreams.remove(sampleStream);
sampleStreamArr[i] = null;
}
if (sampleStreamArr[i] == null && exoTrackSelectionArr[i] != null) {
SilenceSampleStream silenceSampleStream = new SilenceSampleStream(this.durationUs);
silenceSampleStream.seekTo(constrainSeekPosition);
this.sampleStreams.add(silenceSampleStream);
sampleStreamArr[i] = silenceSampleStream;
zArr2[i] = true;
}
}
return constrainSeekPosition;
}
@Override // androidx.media3.exoplayer.source.MediaPeriod
public long seekToUs(long j) {
long constrainSeekPosition = constrainSeekPosition(j);
for (int i = 0; i < this.sampleStreams.size(); i++) {
((SilenceSampleStream) this.sampleStreams.get(i)).seekTo(constrainSeekPosition);
}
return constrainSeekPosition;
}
@Override // androidx.media3.exoplayer.source.MediaPeriod
public long getAdjustedSeekPositionUs(long j, SeekParameters seekParameters) {
return constrainSeekPosition(j);
}
private long constrainSeekPosition(long j) {
return Util.constrainValue(j, 0L, this.durationUs);
}
}
/* loaded from: classes2.dex */
private static final class SilenceSampleStream implements SampleStream {
private final long durationBytes;
private long positionBytes;
private boolean sentFormat;
@Override // androidx.media3.exoplayer.source.SampleStream
public boolean isReady() {
return true;
}
@Override // androidx.media3.exoplayer.source.SampleStream
public void maybeThrowError() {
}
public SilenceSampleStream(long j) {
this.durationBytes = SilenceMediaSource.getAudioByteCount(j);
seekTo(0L);
}
public void seekTo(long j) {
this.positionBytes = Util.constrainValue(SilenceMediaSource.getAudioByteCount(j), 0L, this.durationBytes);
}
@Override // androidx.media3.exoplayer.source.SampleStream
public int readData(FormatHolder formatHolder, DecoderInputBuffer decoderInputBuffer, int i) {
if (!this.sentFormat || (i & 2) != 0) {
formatHolder.format = SilenceMediaSource.FORMAT;
this.sentFormat = true;
return -5;
}
long j = this.durationBytes;
long j2 = this.positionBytes;
long j3 = j - j2;
if (j3 != 0) {
decoderInputBuffer.timeUs = SilenceMediaSource.getAudioPositionUs(j2);
decoderInputBuffer.addFlag(1);
int min = (int) Math.min(SilenceMediaSource.SILENCE_SAMPLE.length, j3);
if ((i & 4) == 0) {
decoderInputBuffer.ensureSpaceForWrite(min);
decoderInputBuffer.data.put(SilenceMediaSource.SILENCE_SAMPLE, 0, min);
}
if ((i & 1) == 0) {
this.positionBytes += min;
}
return -4;
}
decoderInputBuffer.addFlag(4);
return -4;
}
@Override // androidx.media3.exoplayer.source.SampleStream
public int skipData(long j) {
long j2 = this.positionBytes;
seekTo(j);
return (int) ((this.positionBytes - j2) / SilenceMediaSource.SILENCE_SAMPLE.length);
}
}
/* JADX INFO: Access modifiers changed from: private */
public static long getAudioByteCount(long j) {
return Util.getPcmFrameSize(2, 2) * ((j * 44100) / 1000000);
}
/* JADX INFO: Access modifiers changed from: private */
public static long getAudioPositionUs(long j) {
return ((j / Util.getPcmFrameSize(2, 2)) * 1000000) / 44100;
}
}