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Remove TrackMetadataProvider interface

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This interface was used by Boxes.moov. This CL removes the interface and just uses the Track object directly.

Since Track is package-private it seems fine to use it directly.
The drawback with interface is that, with every new field addition in the
Track class, we need to update the interface as well (if we need to access that field for moov box).

PiperOrigin-RevId: 669295399
This commit is contained in:
sheenachhabra 2024-08-30 05:44:07 -07:00 committed by Copybara-Service
parent 613c7a6aa7
commit 791483f2d3
2 changed files with 11 additions and 46 deletions
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33
libraries/muxer/src/main/java/androidx/media3/muxer/Boxes.java
View File

@ -52,19 +52,6 @@ import org.checkerframework.checker.nullness.qual.PolyNull;
/** Writes out various types of boxes as per MP4 (ISO/IEC 14496-12) standards. */
/* package */ final class Boxes {
/** Provides track's metadata like media format, written samples. */
public interface TrackMetadataProvider {
Format format();
int videoUnitTimebase();
ImmutableList<BufferInfo> writtenSamples();
ImmutableList<Long> writtenChunkOffsets();
ImmutableList<Integer> writtenChunkSampleCounts();
}
/** Total number of bytes in an integer. */
private static final int BYTES_PER_INTEGER = 4;
@ -125,7 +112,7 @@ import org.checkerframework.checker.nullness.qual.PolyNull;
/** Returns the moov box. */
@SuppressWarnings("InlinedApi")
public static ByteBuffer moov(
List<? extends TrackMetadataProvider> tracks,
List<Track> tracks,
MetadataCollector metadataCollector,
long minInputPtsUs,
boolean isFragmentedMp4,
@ -142,17 +129,17 @@ import org.checkerframework.checker.nullness.qual.PolyNull;
int nextTrackId = 1;
long videoDurationUs = 0L;
for (int i = 0; i < tracks.size(); i++) {
TrackMetadataProvider track = tracks.get(i);
if (!isFragmentedMp4 && track.writtenSamples().isEmpty()) {
Track track = tracks.get(i);
if (!isFragmentedMp4 && track.writtenSamples.isEmpty()) {
continue;
}
Format format = track.format();
Format format = track.format;
String languageCode = bcp47LanguageTagToIso3(format.language);
// Generate the sample durations to calculate the total duration for tkhd box.
List<Integer> sampleDurationsVu =
convertPresentationTimestampsToDurationsVu(
track.writtenSamples(),
track.writtenSamples,
minInputPtsUs,
track.videoUnitTimebase(),
lastSampleDurationBehavior);
@ -168,12 +155,12 @@ import org.checkerframework.checker.nullness.qual.PolyNull;
ByteBuffer stts = stts(sampleDurationsVu);
ByteBuffer ctts =
MimeTypes.isVideo(format.sampleMimeType)
? ctts(track.writtenSamples(), sampleDurationsVu, track.videoUnitTimebase())
? ctts(track.writtenSamples, sampleDurationsVu, track.videoUnitTimebase())
: ByteBuffer.allocate(0);
ByteBuffer stsz = stsz(track.writtenSamples());
ByteBuffer stsc = stsc(track.writtenChunkSampleCounts());
ByteBuffer stsz = stsz(track.writtenSamples);
ByteBuffer stsc = stsc(track.writtenChunkSampleCounts);
ByteBuffer chunkOffsetBox =
isFragmentedMp4 ? stco(track.writtenChunkOffsets()) : co64(track.writtenChunkOffsets());
isFragmentedMp4 ? stco(track.writtenChunkOffsets) : co64(track.writtenChunkOffsets);
String handlerType;
String handlerName;
@ -190,7 +177,7 @@ import org.checkerframework.checker.nullness.qual.PolyNull;
sampleEntryBox = videoSampleEntry(format);
stsdBox = stsd(sampleEntryBox);
stblBox =
stbl(stsdBox, stts, ctts, stsz, stsc, chunkOffsetBox, stss(track.writtenSamples()));
stbl(stsdBox, stts, ctts, stsz, stsc, chunkOffsetBox, stss(track.writtenSamples));
break;
case C.TRACK_TYPE_AUDIO:
handlerType = "soun";

24
libraries/muxer/src/main/java/androidx/media3/muxer/Track.java
View File

@ -20,7 +20,6 @@ import android.media.MediaCodec.BufferInfo;
import androidx.media3.common.Format;
import androidx.media3.common.MimeTypes;
import androidx.media3.muxer.Muxer.TrackToken;
import com.google.common.collect.ImmutableList;
import java.nio.ByteBuffer;
import java.util.ArrayDeque;
import java.util.ArrayList;
@ -28,7 +27,7 @@ import java.util.Deque;
import java.util.List;
/** Represents a single track (audio, video, metadata etc.). */
/* package */ final class Track implements TrackToken, Boxes.TrackMetadataProvider {
/* package */ final class Track implements TrackToken {
public final Format format;
public final int sortKey;
public final List<BufferInfo> writtenSamples;
@ -99,30 +98,9 @@ import java.util.List;
pendingSamplesByteBuffer.addLast(byteBufferToAdd);
}
@Override
public int videoUnitTimebase() {
return MimeTypes.isAudio(format.sampleMimeType)
? 48_000 // TODO: b/270583563 - Update these with actual values from mediaFormat.
: 90_000;
}
@Override
public ImmutableList<BufferInfo> writtenSamples() {
return ImmutableList.copyOf(writtenSamples);
}
@Override
public ImmutableList<Long> writtenChunkOffsets() {
return ImmutableList.copyOf(writtenChunkOffsets);
}
@Override
public ImmutableList<Integer> writtenChunkSampleCounts() {
return ImmutableList.copyOf(writtenChunkSampleCounts);
}
@Override
public Format format() {
return format;
}
}