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take byte offset into account when unsynchronizing an id3 frame

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Issue #5673

PiperOrigin-RevId: 241328598
This commit is contained in:
bachinger 2019-04-01 16:26:29 +01:00 committed by Oliver Woodman
parent 5fd4fddfac
commit e612511afc
2 changed files with 6 additions and 3 deletions
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3
RELEASENOTES.md
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@ -90,7 +90,8 @@
* Prevent seeking when ICY metadata is present to prevent playback problems
([#5658](https://github.com/google/ExoPlayer/issues/5658)).
* Use full BCP 47 language tags in `Format`.
* Select audio track based on system language if no preference is provided.
* Take byte offset into account when unsynchronizing an id3 frame
([#5673](https://github.com/google/ExoPlayer/issues/5673)).
### 2.9.6 ###

6
library/core/src/main/java/com/google/android/exoplayer2/metadata/id3/Id3Decoder.java
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@ -713,9 +713,11 @@ public final class Id3Decoder implements MetadataDecoder {
*/
private static int removeUnsynchronization(ParsableByteArray data, int length) {
byte[] bytes = data.data;
for (int i = data.getPosition(); i + 1 < length; i++) {
int startPosition = data.getPosition();
for (int i = startPosition; i + 1 < startPosition + length; i++) {
if ((bytes[i] & 0xFF) == 0xFF && bytes[i + 1] == 0x00) {
System.arraycopy(bytes, i + 2, bytes, i + 1, length - i - 2);
int relativePosition = i - startPosition;
System.arraycopy(bytes, i + 2, bytes, i + 1, length - relativePosition - 2);
length--;
}
}