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Ignore obviously sectors with obviously impossible IDs.

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This commit is contained in:
David Given
2019-02-21 21:01:52 +01:00
parent ed9b7ef6b3
commit 498b8572a2
1 changed files with 8 additions and 2 deletions
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10
lib/brother/decoder.cc
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@@ -52,8 +52,8 @@ SectorVector BrotherDecoder::decodeToSectors(const RawRecordVector& rawRecords,
{
std::vector<std::unique_ptr<Sector>> sectors;
bool headerIsValid = false;
int nextTrack = 0;
int nextSector = 0;
unsigned nextTrack = 0;
unsigned nextSector = 0;
for (auto& rawrecord : rawRecords)
{
@@ -77,6 +77,12 @@ SectorVector BrotherDecoder::decodeToSectors(const RawRecordVector& rawRecords,
nextTrack = decode_header_gcr(read_be16(toBytes(ii+32, ii+48)));
nextSector = decode_header_gcr(read_be16(toBytes(ii+48, ii+64)));
/* Sanity check the sector; sector IDs above 11 can't exist but appear
* occasionally due to read bit errors. */
if (nextSector > 11)
break;
headerIsValid = true;
break;
}