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Cleanup VorbisUtil

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Slightly cleanup VorbisUtil.
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OxygenCobalt 2022-01-09 18:52:54 -07:00
parent 90b3056820
commit 29d978fdd4
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1 changed files with 17 additions and 16 deletions
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33
library/extractor/src/main/java/com/google/android/exoplayer2/extractor/VorbisUtil.java
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@ -302,8 +302,9 @@ public final class VorbisUtil {
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. Decode it from Base64 and make it a
// PictureFrame.
// 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)));
@ -324,22 +325,22 @@ public final class VorbisUtil {
/**
* Transforms a picture metadata block into a picture frame.
*
* @param input The bytes of the picture.
* @return A picture frame from the input data.
* @param scratch The bytes of the picture.
* @return A picture frame from the scratch data.
*/
static PictureFrame buildPictureFrame(ParsableByteArray input) {
int pictureType = input.readInt();
int mimeTypeLength = input.readInt();
String mimeType = input.readString(mimeTypeLength, Charsets.US_ASCII);
int descriptionLength = input.readInt();
String description = input.readString(descriptionLength);
int width = input.readInt();
int height = input.readInt();
int depth = input.readInt();
int colors = input.readInt();
int pictureDataLength = input.readInt();
static PictureFrame buildPictureFrame(ParsableByteArray scratch) {
int pictureType = scratch.readInt();
int mimeTypeLength = scratch.readInt();
String mimeType = scratch.readString(mimeTypeLength, Charsets.US_ASCII);
int descriptionLength = scratch.readInt();
String description = scratch.readString(descriptionLength);
int width = scratch.readInt();
int height = scratch.readInt();
int depth = scratch.readInt();
int colors = scratch.readInt();
int pictureDataLength = scratch.readInt();
byte[] pictureData = new byte[pictureDataLength];
input.readBytes(pictureData, 0, pictureDataLength);
scratch.readBytes(pictureData, 0, pictureDataLength);
return new PictureFrame(
pictureType, mimeType, description, width, height, depth, colors, pictureData);