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https://github.com/libretro/beetle-psx-libretro.git
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5d227ea4b8
Since the subchannel data is either computed from scratch or read from a separate sbi file, it's entirely unnecessary. This avoids a synchronous file read in PreSeekHack in the CD controller code which otherwise completely defeats async read behavior. It also makes the sector read hint provided to the background thread more useful.
82 lines
1.8 KiB
C++
82 lines
1.8 KiB
C++
#ifndef __MDFN_CDACCESS_IMAGE_H
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#define __MDFN_CDACCESS_IMAGE_H
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#include <map>
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class Stream;
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class AudioReader;
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struct CDRFILE_TRACK_INFO
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{
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int32_t LBA;
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uint32_t DIFormat;
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uint8_t subq_control;
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int32_t pregap;
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int32_t pregap_dv;
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int32_t postgap;
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int32_t index[2];
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int32_t sectors; // Not including pregap sectors!
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Stream *fp;
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bool FirstFileInstance;
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bool RawAudioMSBFirst;
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long FileOffset;
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unsigned int SubchannelMode;
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uint32_t LastSamplePos;
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AudioReader *AReader;
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};
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class CDAccess_Image : public CDAccess
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{
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public:
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CDAccess_Image(bool *success, const char *path, bool image_memcache);
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virtual ~CDAccess_Image();
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virtual bool Read_Raw_Sector(uint8_t *buf, int32_t lba);
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virtual bool Read_Raw_PW(uint8_t *buf, int32_t lba);
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virtual bool Read_TOC(TOC *toc);
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virtual void Eject(bool eject_status);
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private:
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int32_t NumTracks;
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int32_t FirstTrack;
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int32_t LastTrack;
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int32_t total_sectors;
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uint8_t disc_type;
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CDRFILE_TRACK_INFO Tracks[100]; // Track #0(HMM?) through 99
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struct cpp11_array_doodad
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{
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uint8 data[12];
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};
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std::map<uint32, cpp11_array_doodad> SubQReplaceMap;
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std::string base_dir;
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bool ImageOpen(const char *path, bool image_memcache);
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int LoadSBI(const char* sbi_path);
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void Cleanup(void);
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// MakeSubPQ will OR the simulated P and Q subchannel data into SubPWBuf.
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void MakeSubPQ(int32_t lba, uint8_t *SubPWBuf);
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bool ParseTOCFileLineInfo(CDRFILE_TRACK_INFO *track, const int tracknum,
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const std::string &filename, const char *binoffset, const char *msfoffset,
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const char *length, bool image_memcache, std::map<std::string, Stream*> &toc_streamcache);
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uint32_t GetSectorCount(CDRFILE_TRACK_INFO *track);
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};
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#endif
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