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CDImage: Add memory CD image class

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This commit is contained in:
Connor McLaughlin
2020-07-22 00:03:07 +10:00
parent 8b91bf5e57
commit 3187d07d03
6 changed files with 231 additions and 51 deletions
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108
src/common/cd_image.h
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@ -1,5 +1,6 @@
#pragma once
#include "bitfield.h"
#include "progress_callback.h"
#include "types.h"
#include <array>
#include <memory>
@ -161,57 +162,6 @@ public:
};
static_assert(sizeof(SubChannelQ) == SUBCHANNEL_BYTES_PER_FRAME, "SubChannelQ is correct size");
// Helper functions.
static u32 GetBytesPerSector(TrackMode mode);
// Opening disc image.
static std::unique_ptr<CDImage> Open(const char* filename);
static std::unique_ptr<CDImage> OpenBinImage(const char* filename);
static std::unique_ptr<CDImage> OpenCueSheetImage(const char* filename);
static std::unique_ptr<CDImage> OpenCHDImage(const char* filename);
// Accessors.
const std::string& GetFileName() const { return m_filename; }
LBA GetPositionOnDisc() const { return m_position_on_disc; }
Position GetMSFPositionOnDisc() const { return Position::FromLBA(m_position_on_disc); }
LBA GetPositionInTrack() const { return m_position_in_track; }
Position GetMSFPositionInTrack() const { return Position::FromLBA(m_position_in_track); }
LBA GetLBACount() const { return m_lba_count; }
u32 GetIndexNumber() const { return m_current_index->index_number; }
u32 GetTrackNumber() const { return m_current_index->track_number; }
u32 GetTrackCount() const { return static_cast<u32>(m_tracks.size()); }
LBA GetTrackStartPosition(u8 track) const;
Position GetTrackStartMSFPosition(u8 track) const;
LBA GetTrackLength(u8 track) const;
Position GetTrackMSFLength(u8 track) const;
TrackMode GetTrackMode(u8 track) const;
LBA GetTrackIndexPosition(u8 track, u8 index) const;
LBA GetTrackIndexLength(u8 track, u8 index) const;
u32 GetFirstTrackNumber() const { return m_tracks.front().track_number; }
u32 GetLastTrackNumber() const { return m_tracks.back().track_number; }
// Seek to data LBA.
bool Seek(LBA lba);
// Seek to disc position (MSF).
bool Seek(const Position& pos);
// Seek to track and position.
bool Seek(u32 track_number, const Position& pos_in_track);
// Seek to track and LBA.
bool Seek(u32 track_number, LBA lba);
// Read from the current LBA. Returns the number of sectors read.
u32 Read(ReadMode read_mode, u32 sector_count, void* buffer);
// Read a single raw sector from the current LBA.
bool ReadRawSector(void* buffer);
// Reads sub-channel Q for the current LBA.
virtual bool ReadSubChannelQ(SubChannelQ* subq);
protected:
struct Track
{
u32 track_number;
@ -237,9 +187,65 @@ protected:
bool is_pregap;
};
// Helper functions.
static u32 GetBytesPerSector(TrackMode mode);
// Opening disc image.
static std::unique_ptr<CDImage> Open(const char* filename);
static std::unique_ptr<CDImage> OpenBinImage(const char* filename);
static std::unique_ptr<CDImage> OpenCueSheetImage(const char* filename);
static std::unique_ptr<CDImage> OpenCHDImage(const char* filename);
static std::unique_ptr<CDImage>
CreateMemoryImage(CDImage* image, ProgressCallback* progress = ProgressCallback::NullProgressCallback);
// Accessors.
const std::string& GetFileName() const { return m_filename; }
LBA GetPositionOnDisc() const { return m_position_on_disc; }
Position GetMSFPositionOnDisc() const { return Position::FromLBA(m_position_on_disc); }
LBA GetPositionInTrack() const { return m_position_in_track; }
Position GetMSFPositionInTrack() const { return Position::FromLBA(m_position_in_track); }
LBA GetLBACount() const { return m_lba_count; }
u32 GetIndexNumber() const { return m_current_index->index_number; }
u32 GetTrackNumber() const { return m_current_index->track_number; }
u32 GetTrackCount() const { return static_cast<u32>(m_tracks.size()); }
LBA GetTrackStartPosition(u8 track) const;
Position GetTrackStartMSFPosition(u8 track) const;
LBA GetTrackLength(u8 track) const;
Position GetTrackMSFLength(u8 track) const;
TrackMode GetTrackMode(u8 track) const;
LBA GetTrackIndexPosition(u8 track, u8 index) const;
LBA GetTrackIndexLength(u8 track, u8 index) const;
u32 GetFirstTrackNumber() const { return m_tracks.front().track_number; }
u32 GetLastTrackNumber() const { return m_tracks.back().track_number; }
u32 GetIndexCount() const { return static_cast<u32>(m_indices.size()); }
const Track& GetTrack(u32 track) const;
const Index& GetIndex(u32 i) const;
// Seek to data LBA.
bool Seek(LBA lba);
// Seek to disc position (MSF).
bool Seek(const Position& pos);
// Seek to track and position.
bool Seek(u32 track_number, const Position& pos_in_track);
// Seek to track and LBA.
bool Seek(u32 track_number, LBA lba);
// Read from the current LBA. Returns the number of sectors read.
u32 Read(ReadMode read_mode, u32 sector_count, void* buffer);
// Read a single raw sector from the current LBA.
bool ReadRawSector(void* buffer);
// Reads sub-channel Q for the current LBA.
virtual bool ReadSubChannelQ(SubChannelQ* subq);
// Reads a single sector from an index.
virtual bool ReadSectorFromIndex(void* buffer, const Index& index, LBA lba_in_index) = 0;
protected:
const Index* GetIndexForDiscPosition(LBA pos);
const Index* GetIndexForTrackPosition(u32 track_number, LBA track_pos);