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Add support for 'mett' sample description

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PiperOrigin-RevId: 333272292
This commit is contained in:
andrewlewis 2020-09-23 13:22:27 +01:00 committed by kim-vde
parent 7b51797d4b
commit 69ca49f939
2 changed files with 17 additions and 0 deletions
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3
library/extractor/src/main/java/com/google/android/exoplayer2/extractor/mp4/Atom.java
View File

@ -355,6 +355,9 @@ import java.util.List;
@SuppressWarnings("ConstantCaseForConstants")
public static final int TYPE_camm = 0x63616d6d;
@SuppressWarnings("ConstantCaseForConstants")
public static final int TYPE_mett = 0x6d657474;
@SuppressWarnings("ConstantCaseForConstants")
public static final int TYPE_alac = 0x616c6163;

14
library/extractor/src/main/java/com/google/android/exoplayer2/extractor/mp4/AtomParsers.java
View File

@ -891,6 +891,8 @@ import org.checkerframework.checker.nullness.compatqual.NullableType;
|| childAtomType == Atom.TYPE_c608) {
parseTextSampleEntry(stsd, childAtomType, childStartPosition, childAtomSize, trackId,
language, out);
} else if (childAtomType == Atom.TYPE_mett) {
parseMetaDataSampleEntry(stsd, childAtomType, childStartPosition, trackId, out);
} else if (childAtomType == Atom.TYPE_camm) {
out.format =
new Format.Builder()
@ -1097,6 +1099,18 @@ import org.checkerframework.checker.nullness.compatqual.NullableType;
.build();
}
private static void parseMetaDataSampleEntry(
ParsableByteArray parent, int atomType, int position, int trackId, StsdData out) {
parent.setPosition(position + Atom.HEADER_SIZE + StsdData.STSD_HEADER_SIZE);
if (atomType == Atom.TYPE_mett) {
parent.readNullTerminatedString(); // Skip optional content_encoding
@Nullable String mimeType = parent.readNullTerminatedString();
if (mimeType != null) {
out.format = new Format.Builder().setId(trackId).setSampleMimeType(mimeType).build();
}
}
}
/**
* Parses the edts atom (defined in ISO/IEC 14496-12 subsection 8.6.5).
*