mirror of
https://github.com/TomHarte/CLK.git
synced 2024-07-27 17:29:38 +00:00
Made a first attempt at HFE support.
This commit is contained in:
parent
e6683e7f2d
commit
c8c1792c3f
@ -8,11 +8,20 @@
|
|||||||
|
|
||||||
#include "HFE.hpp"
|
#include "HFE.hpp"
|
||||||
|
|
||||||
|
#include "../PCMTrack.hpp"
|
||||||
|
|
||||||
using namespace Storage::Disk;
|
using namespace Storage::Disk;
|
||||||
|
|
||||||
HFE::HFE(const char *file_name) :
|
HFE::HFE(const char *file_name) :
|
||||||
Storage::FileHolder(file_name) {
|
Storage::FileHolder(file_name) {
|
||||||
throw ErrorNotHFE;
|
if(!check_signature("HXCPICFE", 8)) throw ErrorNotHFE;
|
||||||
|
|
||||||
|
if(fgetc(file_)) throw ErrorNotHFE;
|
||||||
|
track_count_ = (unsigned int)fgetc(file_);
|
||||||
|
head_count_ = (unsigned int)fgetc(file_);
|
||||||
|
|
||||||
|
fseek(file_, 7, SEEK_CUR);
|
||||||
|
track_list_offset_ = (long)fgetc16le() << 9;
|
||||||
}
|
}
|
||||||
|
|
||||||
HFE::~HFE() {
|
HFE::~HFE() {
|
||||||
@ -31,5 +40,28 @@ bool HFE::get_is_read_only() {
|
|||||||
}
|
}
|
||||||
|
|
||||||
std::shared_ptr<Track> HFE::get_uncached_track_at_position(unsigned int head, unsigned int position) {
|
std::shared_ptr<Track> HFE::get_uncached_track_at_position(unsigned int head, unsigned int position) {
|
||||||
return nullptr;
|
// Get track position and length from the lookup table; data is then always interleaved
|
||||||
|
// based on an assumption of two heads.
|
||||||
|
fseek(file_, track_list_offset_ + position * 4, SEEK_SET);
|
||||||
|
|
||||||
|
long track_offset = (long)fgetc16le() << 9;
|
||||||
|
uint16_t track_length = fgetc16le();
|
||||||
|
|
||||||
|
fseek(file_, track_offset, SEEK_SET);
|
||||||
|
if(head) fseek(file_, 256, SEEK_CUR);
|
||||||
|
|
||||||
|
PCMSegment segment;
|
||||||
|
uint16_t side_length = track_length / 2;
|
||||||
|
segment.data.resize(side_length);
|
||||||
|
|
||||||
|
uint16_t c = 0;
|
||||||
|
while(c < side_length) {
|
||||||
|
uint16_t length = (uint16_t)std::min(256, side_length - c);
|
||||||
|
fread(&segment.data[c], 1, length, file_);
|
||||||
|
c += length;
|
||||||
|
fseek(file_, 256, SEEK_CUR);
|
||||||
|
}
|
||||||
|
|
||||||
|
std::shared_ptr<Track> track(new PCMTrack(segment));
|
||||||
|
return track;
|
||||||
}
|
}
|
||||||
|
@ -43,6 +43,7 @@ class HFE: public Disk, public Storage::FileHolder {
|
|||||||
|
|
||||||
unsigned int head_count_;
|
unsigned int head_count_;
|
||||||
unsigned int track_count_;
|
unsigned int track_count_;
|
||||||
|
long track_list_offset_;
|
||||||
};
|
};
|
||||||
|
|
||||||
}
|
}
|
||||||
|
Loading…
Reference in New Issue
Block a user