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Add additional SEF data types.

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PiperOrigin-RevId: 342034166
This commit is contained in:
samrobinson 2020-11-12 14:18:42 +00:00 committed by Christos Tsilopoulos
parent e3c725aa38
commit a038b421dd
1 changed files with 44 additions and 10 deletions
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54
library/extractor/src/main/java/com/google/android/exoplayer2/extractor/mp4/SefReader.java
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@ -63,10 +63,20 @@ import java.util.List;
/** Supported data types. */
@Documented
@Retention(RetentionPolicy.SOURCE)
@IntDef({TYPE_SLOW_MOTION_DATA})
@IntDef({
TYPE_SLOW_MOTION_DATA,
TYPE_SUPER_SLOW_MOTION_DATA,
TYPE_SUPER_SLOW_MOTION_BGM,
TYPE_SUPER_SLOW_MOTION_EDIT_DATA,
TYPE_SUPER_SLOW_DEFLICKERING_ON
})
private @interface DataType {}
private static final int TYPE_SLOW_MOTION_DATA = 0x0890;
private static final int TYPE_SLOW_MOTION_DATA = 0x0890; // 2192
private static final int TYPE_SUPER_SLOW_MOTION_DATA = 0x0b00; // 2816
private static final int TYPE_SUPER_SLOW_MOTION_BGM = 0x0b01; // 2817
private static final int TYPE_SUPER_SLOW_MOTION_EDIT_DATA = 0x0b03; // 2819
private static final int TYPE_SUPER_SLOW_DEFLICKERING_ON = 0x0b04; // 2820
private static final String TAG = "SefReader";
@ -150,14 +160,20 @@ import java.util.List;
for (int i = 0; i < sdrsLength / LENGTH_OF_ONE_SDR; i++) {
scratch.skipBytes(2); // SDR data sub info flag and reserved bits (2).
@DataType int dataType = scratch.readLittleEndianShort();
if (dataType == TYPE_SLOW_MOTION_DATA) {
// The read int is the distance from the tail info to the start of the metadata.
// Calculated as an offset from the start by working backwards.
long startOffset = streamLength - tailLength - scratch.readLittleEndianInt();
int size = scratch.readLittleEndianInt();
dataReferences.add(new DataReference(dataType, startOffset, size));
} else {
scratch.skipBytes(8); // startPosition (4), size (4).
switch (dataType) {
case TYPE_SLOW_MOTION_DATA:
case TYPE_SUPER_SLOW_MOTION_DATA:
case TYPE_SUPER_SLOW_MOTION_BGM:
case TYPE_SUPER_SLOW_MOTION_EDIT_DATA:
case TYPE_SUPER_SLOW_DEFLICKERING_ON:
// The read int is the distance from the tail info to the start of the metadata.
// Calculated as an offset from the start by working backwards.
long startOffset = streamLength - tailLength - scratch.readLittleEndianInt();
int size = scratch.readLittleEndianInt();
dataReferences.add(new DataReference(dataType, startOffset, size));
break;
default:
scratch.skipBytes(8); // startPosition (4), size (4).
}
}
@ -208,6 +224,24 @@ import java.util.List;
}
}
@DataType
private static int nameToDataType(String name) throws ParserException {
switch (name) {
case "SlowMotion_Data":
return TYPE_SLOW_MOTION_DATA;
case "Super_SlowMotion_Data":
return TYPE_SUPER_SLOW_MOTION_DATA;
case "Super_SlowMotion_BGM":
return TYPE_SUPER_SLOW_MOTION_BGM;
case "Super_SlowMotion_Edit_Data":
return TYPE_SUPER_SLOW_MOTION_EDIT_DATA;
case "Super_SlowMotion_Deflickering_On":
return TYPE_SUPER_SLOW_DEFLICKERING_ON;
default:
throw new ParserException("Invalid SEF name");
}
}
private static final class DataReference {
@DataType public final int dataType;
public final long startOffset;