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Fix Cea608 caption valid

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PiperOrigin-RevId: 222797622
This commit is contained in:
olly 2018-11-26 10:58:41 +00:00 committed by Oliver Woodman
parent 03101444af
commit 17eadcc433
1 changed files with 4 additions and 4 deletions
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8
library/core/src/main/java/com/google/android/exoplayer2/text/cea/Cea608Decoder.java
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@ -298,7 +298,6 @@ public final class Cea608Decoder extends CeaDecoder {
int ccByte1 = ccData.readUnsignedByte();
int ccByte2 = ccData.readUnsignedByte();
// Only examine valid CEA-608 packets
// TODO: We're currently ignoring the top 5 marker bits, which should all be 1s according
// to the CEA-608 specification. We need to determine if the data should be handled
// differently when that is not the case.
@ -323,11 +322,12 @@ public final class Cea608Decoder extends CeaDecoder {
continue;
}
if ((ccHeader & CC_VALID_FLAG) != CC_VALID_FLAG) {
if (captionValid) {
boolean previousCaptionValid = captionValid;
captionValid = (ccHeader & CC_VALID_FLAG) == CC_VALID_FLAG;
if (!captionValid) {
if (previousCaptionValid) {
// The encoder has flipped the validity bit to indicate captions are being turned off.
resetCueBuilders();
captionValid = false;
captionDataProcessed = true;
}
continue;