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Check for section_syntax_indicator in TS tables

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Issue:#7325
PiperOrigin-RevId: 314321914
This commit is contained in:
aquilescanta 2020-06-02 14:53:15 +01:00 committed by Oliver Woodman
parent 7bc5fa855f
commit 5b06d89467
1 changed files with 17 additions and 6 deletions
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23
library/extractor/src/main/java/com/google/android/exoplayer2/extractor/ts/TsExtractor.java
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@ -463,10 +463,15 @@ public final class TsExtractor implements Extractor {
// See ISO/IEC 13818-1, section 2.4.4.4 for more information on table id assignment.
return;
}
// section_syntax_indicator(1), '0'(1), reserved(2), section_length(12),
// transport_stream_id (16), reserved (2), version_number (5), current_next_indicator (1),
// section_number (8), last_section_number (8)
sectionData.skipBytes(7);
// section_syntax_indicator(1), '0'(1), reserved(2), section_length(4)
int secondHeaderByte = sectionData.readUnsignedByte();
if ((secondHeaderByte & 0x80) == 0) {
// section_syntax_indicator must be 1. See ISO/IEC 13818-1, section 2.4.4.5.
return;
}
// section_length(8), transport_stream_id (16), reserved (2), version_number (5),
// current_next_indicator (1), section_number (8), last_section_number (8)
sectionData.skipBytes(6);
int programCount = sectionData.bytesLeft() / 4;
for (int i = 0; i < programCount; i++) {
@ -539,8 +544,14 @@ public final class TsExtractor implements Extractor {
timestampAdjusters.add(timestampAdjuster);
}
// section_syntax_indicator(1), '0'(1), reserved(2), section_length(12)
sectionData.skipBytes(2);
// section_syntax_indicator(1), '0'(1), reserved(2), section_length(4)
int secondHeaderByte = sectionData.readUnsignedByte();
if ((secondHeaderByte & 0x80) == 0) {
// section_syntax_indicator must be 1. See ISO/IEC 13818-1, section 2.4.4.9.
return;
}
// section_length(8)
sectionData.skipBytes(1);
int programNumber = sectionData.readUnsignedShort();
// Skip 3 bytes (24 bits), including: