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Clean up VorbisUtil

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Try to eliminate some nitpicks regarding VorbisUtil.
This commit is contained in:
OxygenCobalt 2022-01-17 08:04:34 -07:00
parent 0ea8567b6b
commit 9597ecbb31
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2 changed files with 21 additions and 18 deletions
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2
library/extractor/src/main/java/com/google/android/exoplayer2/extractor/FlacStreamMetadata.java
View file

@ -269,7 +269,7 @@ public final class FlacStreamMetadata {
@Nullable
Metadata appendedMetadata =
getMetadataCopyWithAppendedEntriesFrom(
VorbisUtil.buildMetadata(vorbisComments, Collections.emptyList()));
VorbisUtil.buildMetadata(vorbisComments));
return new FlacStreamMetadata(
minBlockSizeSamples,
maxBlockSizeSamples,

37
library/extractor/src/main/java/com/google/android/exoplayer2/extractor/VorbisUtil.java
View file

@ -270,7 +270,8 @@ public final class VorbisUtil {
* All others will be transformed into vorbis comments.
*
* @param vorbisComments The raw input of comments, as a key-value pair KEY=VAL.
* @return A metadata instance containing the processed tags.
* @return A Metadata instance containing the parsed metadata entries. Null if there are no
* valid metadata entries that can be parsed.
*/
@Nullable
public static Metadata buildMetadata(List<String> vorbisComments) {
@ -285,7 +286,8 @@ public final class VorbisUtil {
*
* @param vorbisComments The raw input of comments, as a key-value pair KEY=VAL.
* @param pictureFrames Any picture frames that were parsed beforehand.
* @return A metadata instance containing the processed tags.
* @return A Metadata instance containing the parsed metadata entries. Null if there are no
* valid metadata entries that can be parsed.
*/
@Nullable
public static Metadata buildMetadata(List<String> vorbisComments, List<PictureFrame> pictureFrames) {
@ -300,21 +302,22 @@ public final class VorbisUtil {
if (keyAndValue.length != 2) {
Log.w(TAG, "Failed to parse Vorbis comment: " + vorbisComment);
} else {
if (keyAndValue[0].equals("METADATA_BLOCK_PICTURE")) {
// This tag is a special cover art tag, outlined by
// https://wiki.xiph.org/index.php/VorbisComment#Cover_art.
// Decode it from Base64 and transform it into a PictureFrame.
try {
byte[] decoded = Base64.decode(keyAndValue[1], Base64.DEFAULT);
metadataEntries.add(buildPictureFrame(new ParsableByteArray(decoded)));
} catch (Exception e) {
Log.w(TAG, "Failed to parse vorbis picture");
}
} else {
VorbisComment entry = new VorbisComment(keyAndValue[0], keyAndValue[1]);
metadataEntries.add(entry);
continue;
}
if (keyAndValue[0].equals("METADATA_BLOCK_PICTURE")) {
// This tag is a special cover art tag, outlined by
// https://wiki.xiph.org/index.php/VorbisComment#Cover_art.
// Decode it from Base64 and transform it into a PictureFrame.
try {
byte[] decoded = Base64.decode(keyAndValue[1], Base64.DEFAULT);
metadataEntries.add(buildPictureFrame(new ParsableByteArray(decoded)));
} catch (Exception e) {
Log.w(TAG, "Failed to parse vorbis picture");
}
} else {
VorbisComment entry = new VorbisComment(keyAndValue[0], keyAndValue[1]);
metadataEntries.add(entry);
}
}
metadataEntries.addAll(pictureFrames);
@ -328,7 +331,7 @@ public final class VorbisUtil {
* @param scratch The bytes of the picture.
* @return A picture frame from the scratch data.
*/
static PictureFrame buildPictureFrame(ParsableByteArray scratch) {
public static PictureFrame buildPictureFrame(ParsableByteArray scratch) {
int pictureType = scratch.readInt();
int mimeTypeLength = scratch.readInt();
String mimeType = scratch.readString(mimeTypeLength, Charsets.US_ASCII);