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Avoid throwing an exception when an ID3 header is not found

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Issue:#1966

-------------
Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=136836332
This commit is contained in:
aquilescanta 2016-07-18 08:49:41 +01:00 committed by Oliver Woodman
parent eeb37d73e7
commit 6e69b98517
1 changed files with 11 additions and 1 deletions
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12
library/src/main/java/com/google/android/exoplayer2/extractor/ts/Id3Reader.java
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@ -15,6 +15,7 @@
*/
package com.google.android.exoplayer2.extractor.ts;
import android.util.Log;
import com.google.android.exoplayer2.C;
import com.google.android.exoplayer2.Format;
import com.google.android.exoplayer2.extractor.ExtractorOutput;
@ -28,6 +29,8 @@ import com.google.android.exoplayer2.util.ParsableByteArray;
*/
/* package */ final class Id3Reader implements ElementaryStreamReader {
private static final String TAG = "Id3Reader";
private static final int ID3_HEADER_SIZE = 10;
private final ParsableByteArray id3Header;
@ -82,7 +85,14 @@ import com.google.android.exoplayer2.util.ParsableByteArray;
headerBytesAvailable);
if (sampleBytesRead + headerBytesAvailable == ID3_HEADER_SIZE) {
// We've finished reading the ID3 header. Extract the sample size.
id3Header.setPosition(6); // 'ID3' (3) + version (2) + flags (1)
id3Header.setPosition(0);
if ('I' != id3Header.readUnsignedByte() || 'D' != id3Header.readUnsignedByte()
|| '3' != id3Header.readUnsignedByte()) {
Log.w(TAG, "Discarding invalid ID3 tag");
writingSample = false;
return;
}
id3Header.skipBytes(3); // version (2) + flags (1)
sampleSize = ID3_HEADER_SIZE + id3Header.readSynchSafeInt();
}
}