RASCSI/cpp/devices/cd_track.cpp

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//---------------------------------------------------------------------------
//
// SCSI Target Emulator RaSCSI Reloaded
// for Raspberry Pi
//
// Copyright (C) 2001-2006 (ytanaka@ipc-tokai.or.jp)
// Copyright (C) 2014-2020 GIMONS
// Copyright (C) akuker
//
// Licensed under the BSD 3-Clause License.
// See LICENSE file in the project root folder.
//
//---------------------------------------------------------------------------
#include "cd_track.h"
#include <cassert>
void CDTrack::Init(int track, uint32_t first, uint32_t last)
{
assert(!valid);
assert(track >= 1);
assert(first < last);
// Set and enable track number
track_no = track;
valid = true;
// Remember LBA
first_lba = first;
last_lba = last;
}
void CDTrack::SetPath(bool cdda, string_view path)
{
assert(valid);
// CD-DA or data
audio = cdda;
// Remember the path
imgpath = path;
}
string CDTrack::GetPath() const
{
assert(valid);
return imgpath;
}
//---------------------------------------------------------------------------
//
// Gets the start of LBA
//
//---------------------------------------------------------------------------
uint32_t CDTrack::GetFirst() const
{
assert(valid);
assert(first_lba < last_lba);
return first_lba;
}
//---------------------------------------------------------------------------
//
// Get the end of LBA
//
//---------------------------------------------------------------------------
uint32_t CDTrack::GetLast() const
{
assert(valid);
assert(first_lba < last_lba);
return last_lba;
}
uint32_t CDTrack::GetBlocks() const
{
assert(valid);
assert(first_lba < last_lba);
// Calculate from start LBA and end LBA
return last_lba - first_lba + 1;
}
int CDTrack::GetTrackNo() const
{
assert(valid);
assert(track_no >= 1);
return track_no;
}
//---------------------------------------------------------------------------
//
// Is valid block
//
//---------------------------------------------------------------------------
bool CDTrack::IsValid(uint32_t lba) const
{
// false if the track itself is invalid
if (!valid) {
return false;
}
// If the block is BEFORE the first block
if (lba < first_lba) {
return false;
}
// If the block is AFTER the last block
if (last_lba < lba) {
return false;
}
// This track is valid
return true;
}
bool CDTrack::IsAudio() const
{
assert(valid);
return audio;
}