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Add maybeInflate() which inflates only if the source buffer starts with the INFLATE_HEADER

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Sven Wischnowsky 2025-01-03 20:54:59 +01:00 committed by Ian Baker
parent 0254b2d16e
commit 3cd0e1ad3d
1 changed files with 24 additions and 0 deletions
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24
libraries/common/src/main/java/androidx/media3/common/util/Util.java
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@ -212,6 +212,8 @@ public final class Util {
private static final String ISM_HLS_FORMAT_EXTENSION = "format=m3u8-aapl";
private static final String ISM_DASH_FORMAT_EXTENSION = "format=mpd-time-csf";
private static final int INFLATE_HEADER = 0x78;
// Replacement map of ISO language codes used for normalization.
@Nullable private static HashMap<String, String> languageTagReplacementMap;
@ -3102,6 +3104,28 @@ public final class Util {
}
}
/**
* Uncompresses the data in {@code input} if it starts with {@code INFLATE_HEADER}
* ({@code 0x78}).
*
* @param input Wraps the compressed input data.
* @param output Wraps an output buffer to be used to store the uncompressed data. If {@code
* output.data} isn't big enough to hold the uncompressed data, a new array is created. If
* {@code true} is returned then the output's position will be set to 0 and its limit will be
* set to the length of the uncompressed data.
* @param inflater If not null, used to uncompressed the input. Otherwise a new {@link Inflater}
* is created.
* @return Whether the input is uncompressed successfully.
*/
@UnstableApi
public static boolean maybeInflate(
ParsableByteArray input, ParsableByteArray output, @Nullable Inflater inflater) {
if (input.bytesLeft() > 0 && input.peekUnsignedByte() == INFLATE_HEADER) {
return inflate(input, output, inflater);
}
return false;
}
/**
* Returns whether the app is running on a TV device.
*