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Feat: Downloading: Add opus audio metadata tags

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This adds a simple timestamp to downloaded opus files in the form of a COMMENT tag.
This commit is contained in:
Mira 2025-12-30 12:47:57 +01:00
parent cd056a7f7f
commit e3f75f5455
1 changed files with 18 additions and 4 deletions
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22
app/src/main/java/org/schabi/newpipe/streams/OggFromWebMWriter.java
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@ -13,6 +13,7 @@ import java.io.Closeable;
import java.io.IOException;
import java.nio.ByteBuffer;
import java.nio.ByteOrder;
import java.time.OffsetDateTime;
/**
* @author kapodamy
@ -272,11 +273,24 @@ public class OggFromWebMWriter implements Closeable {
@Nullable
private byte[] makeMetadata() {
if ("A_OPUS".equals(webmTrack.codecId)) {
return new byte[]{
final var commentFormat = "COMMENT=Downloaded using NewPipe on %s";
final var commentStr = String.format(commentFormat, OffsetDateTime.now().toString());
final var comment = commentStr.getBytes();
final var head = ByteBuffer.allocate(20 + comment.length);
head.order(ByteOrder.LITTLE_ENDIAN);
head.put(new byte[]{
// Byte order is LE, i.e. LSB first
0x4F, 0x70, 0x75, 0x73, 0x54, 0x61, 0x67, 0x73, // "OpusTags" binary string
0x00, 0x00, 0x00, 0x00, // writing application string size (not present)
0x00, 0x00, 0x00, 0x00 // additional tags count (zero means no tags)
};
0x00, 0x00, 0x00, 0x00, // vendor string of length 0
0x01, 0x00, 0x00, 0x00, // additional tags count
// + 4 bytes for the comment string length
// + N bytes for the comment string itself
});
head.putInt(comment.length);
head.put(comment);
return head.array();
} else if ("A_VORBIS".equals(webmTrack.codecId)) {
return new byte[]{
0x03, // ¿¿¿???