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Attempts to pick an intelligent place to pad out tracks.

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This commit is contained in:
Thomas Harte 2018-07-03 20:10:22 -04:00
parent 6e34e60f8a
commit 5b3512f1df
1 changed files with 11 additions and 2 deletions
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13
Storage/Disk/DiskImage/Formats/NIB.cpp
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@ -147,20 +147,29 @@ void NIB::set_tracks(const std::map<Track::Address, std::shared_ptr<Track>> &tra
std::vector<uint8_t> track;
track.reserve(track_length);
uint8_t shifter = 0;
int bit_count = 0;
size_t sync_location = 0, location = 0;
for(const auto bit: segment.data) {
shifter = static_cast<uint8_t>((shifter << 1) | (bit ? 1 : 0));
++bit_count;
++location;
if(shifter & 0x80) {
track.push_back(shifter);
if(bit_count == 10) {
sync_location = location;
}
shifter = 0;
bit_count = 0;
}
}
// Pad out to track_length.
// Trim or pad out to track_length.
if(track.size() > track_length) {
track.resize(track_length);
} else {
while(track.size() < track_length) {
track.push_back(0xff);
std::vector<uint8_t> extra_data(static_cast<size_t>(track_length) - track.size(), 0xff);
track.insert(track.begin() + static_cast<off_t>(sync_location), extra_data.begin(), extra_data.end());
}
}