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CDROM: Synthesize lead-out area and stop reading when reached

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This commit is contained in:
Connor McLaughlin
2020-05-08 10:50:22 +10:00
parent c67e877d82
commit 5b389ae13d
7 changed files with 54 additions and 10 deletions
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26
src/core/cdrom.cpp
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@ -1448,6 +1448,17 @@ void CDROM::DoTOCRead()
SetAsyncInterrupt(Interrupt::Complete);
}
void CDROM::StopReadingWithDataEnd()
{
ClearAsyncInterrupt();
m_async_response_fifo.Push(m_secondary_status.bits);
SetAsyncInterrupt(Interrupt::DataEnd);
m_secondary_status.ClearActiveBits();
m_drive_state = DriveState::Idle;
m_drive_event->Deactivate();
}
void CDROM::DoSectorRead()
{
if (!m_reader.WaitForReadToComplete())
@ -1456,6 +1467,13 @@ void CDROM::DoSectorRead()
// TODO: Error handling
// TODO: Check SubQ checksum.
const CDImage::SubChannelQ& subq = m_reader.GetSectorSubQ();
if (subq.track_number_bcd == CDImage::LEAD_OUT_TRACK_NUMBER)
{
Log_DevPrintf("Read reached lead-out area of disc at LBA %u, pausing", m_reader.GetLastReadSector());
StopReadingWithDataEnd();
return;
}
const bool is_data_sector = subq.control.data;
if (!is_data_sector)
{
@ -1471,13 +1489,7 @@ void CDROM::DoSectorRead()
Log_DevPrintf("Auto pause at the end of track %u (LBA %u)", m_play_track_number_bcd,
m_reader.GetLastReadSector());
ClearAsyncInterrupt();
m_async_response_fifo.Push(m_secondary_status.bits);
SetAsyncInterrupt(Interrupt::DataEnd);
m_secondary_status.ClearActiveBits();
m_drive_state = DriveState::Idle;
m_drive_event->Deactivate();
StopReadingWithDataEnd();
return;
}
}

1
src/core/cdrom.h
View File

@ -234,6 +234,7 @@ private:
void ProcessDataSector(const u8* raw_sector, const CDImage::SubChannelQ& subq);
void ProcessXAADPCMSector(const u8* raw_sector, const CDImage::SubChannelQ& subq);
void ProcessCDDASector(const u8* raw_sector, const CDImage::SubChannelQ& subq);
void StopReadingWithDataEnd();
void BeginSeeking(bool logical, bool read_after_seek, bool play_after_seek);
void ResetCurrentXAFile();
void LoadDataFIFO();