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CDROM: Differentiate between logical and physical hold

This commit is contained in:
Connor McLaughlin 2021-06-15 22:33:21 +10:00
parent 16c02c8559
commit 2548f75267
1 changed files with 11 additions and 8 deletions
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19
src/core/cdrom.cpp
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@ -794,7 +794,7 @@ TickCount CDROM::GetTicksForSeek(CDImage::LBA new_lba, bool ignore_speed_change)
if (lba_diff < 32)
{
ticks += static_cast<u32>(GetTicksForRead()) * std::min<u32>(BASE_SECTORS_PER_TRACK, lba_diff) * 2;
ticks += static_cast<u32>(GetTicksForRead()) * std::min<u32>(BASE_SECTORS_PER_TRACK, lba_diff);
}
else
{
@ -803,12 +803,12 @@ TickCount CDROM::GetTicksForSeek(CDImage::LBA new_lba, bool ignore_speed_change)
// 1000ms for the whole disc
ticks += std::max<u32>(
20000,
static_cast<u32>(
((static_cast<u64>(lba_diff) * static_cast<u64>(tps) * static_cast<u64>(1000)) / (72 * 60 * 75)) / 1000));
20000, static_cast<u32>(((static_cast<u64>(lba_diff) * static_cast<u64>(tps) * static_cast<u64>(1000)) /
(72 * CDImage::FRAMES_PER_MINUTE)) /
1000));
// 300ms for non-short seeks
if (lba_diff >= 2550)
// 300ms for non-short seeks (1 minute)
if (lba_diff >= CDImage::FRAMES_PER_MINUTE)
ticks += static_cast<u32>((u64(tps) * 300) / 1000);
}
@ -1865,13 +1865,16 @@ void CDROM::UpdatePhysicalPosition()
const u32 sector_diff = diff / GetTicksForRead();
if (sector_diff > 0)
{
const CDImage::LBA hold_offset = m_last_sector_header_valid ? 2 : 0;
const CDImage::LBA sectors_per_track = BASE_SECTORS_PER_TRACK + hold_offset;
const CDImage::LBA hold_position = m_current_lba + hold_offset;
const CDImage::LBA base =
(m_current_lba >= BASE_SECTORS_PER_TRACK) ? (m_current_lba - BASE_SECTORS_PER_TRACK) : m_current_lba;
(hold_position >= sectors_per_track) ? (hold_position - sectors_per_track) : hold_position;
if (m_physical_lba < base)
m_physical_lba = base;
const CDImage::LBA old_offset = m_physical_lba - base;
const CDImage::LBA new_offset = (old_offset + sector_diff) % BASE_SECTORS_PER_TRACK;
const CDImage::LBA new_offset = (old_offset + sector_diff) % sectors_per_track;
const CDImage::LBA new_physical_lba = base + new_offset;
#ifdef _DEBUG
const CDImage::Position old_pos(CDImage::Position::FromLBA(m_physical_lba));