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Switches the Acorn ADF implementation to using the new track_serialisation/sectors_from_segment route for decomposition of a track into sectors.

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Thomas Harte 2017-09-26 22:05:33 -04:00
parent 970c80f2e3
commit e3420f62c6
1 changed files with 15 additions and 15 deletions
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30
Storage/Disk/DiskImage/Formats/AcornADF.cpp
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@ -9,12 +9,13 @@
#include "AcornADF.hpp"
#include <sys/stat.h>
#include "../../Encodings/MFM/Parser.hpp"
#include "../../Encodings/MFM/Encoder.hpp"
#include "../../Track/TrackSerialiser.hpp"
#include "../../Encodings/MFM/SegmentParser.hpp"
namespace {
static const unsigned int sectors_per_track = 16;
static const unsigned int bytes_per_sector = 256;
static const size_t bytes_per_sector = 256;
static const unsigned int sector_size = 1;
}
@ -24,8 +25,8 @@ AcornADF::AcornADF(const char *file_name) :
Storage::FileHolder(file_name) {
// very loose validation: the file needs to be a multiple of 256 bytes
// and not ungainly large
if(file_stats_.st_size % bytes_per_sector) throw ErrorNotAcornADF;
if(file_stats_.st_size < 7 * bytes_per_sector) throw ErrorNotAcornADF;
if(file_stats_.st_size % (off_t)bytes_per_sector) throw ErrorNotAcornADF;
if(file_stats_.st_size < 7 * (off_t)bytes_per_sector) throw ErrorNotAcornADF;
// check that the initial directory's 'Hugo's are present
fseek(file_, 513, SEEK_SET);
@ -87,17 +88,16 @@ std::shared_ptr<Track> AcornADF::get_track_at_position(unsigned int head, unsign
}
void AcornADF::set_track_at_position(unsigned int head, unsigned int position, const std::shared_ptr<Track> &track) {
std::vector<uint8_t> parsed_track;
Storage::Encodings::MFM::Parser parser(true, track);
for(unsigned int c = 0; c < sectors_per_track; c++) {
std::shared_ptr<Storage::Encodings::MFM::Sector> sector = parser.get_sector(0, (uint8_t)position, (uint8_t)c);
if(sector) {
parsed_track.insert(parsed_track.end(), sector->data.begin(), sector->data.end());
} else {
// TODO: what's correct here? Warn the user that whatever has been written to the disk,
// it can no longer be stored as an SSD? If so, warn them by what route?
parsed_track.resize(parsed_track.size() + bytes_per_sector);
}
std::map<size_t, Storage::Encodings::MFM::Sector> sectors =
Storage::Encodings::MFM::sectors_from_segment(
Storage::Disk::track_serialisation(*track, Time(1, 100000)),
true);
std::vector<uint8_t> parsed_track(sectors_per_track*bytes_per_sector, 0);
for(auto &pair : sectors) {
if(pair.second.address.sector >= sectors_per_track) continue;
if(pair.second.size != sector_size) continue;
memcpy(&parsed_track[pair.second.address.sector * bytes_per_sector], pair.second.data.data(), std::min(pair.second.data.size(), bytes_per_sector));
}
long file_offset = get_file_offset_for_position(head, position);