2017-08-05 17:47:05 +00:00
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/******************************************************************************/
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/* Mednafen - Multi-system Emulator */
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/******************************************************************************/
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/* CDAccess_CHD.h:
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** Copyright (C) 2017 Romain Tisserand
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**
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** This program is free software; you can redistribute it and/or
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** modify it under the terms of the GNU General Public License
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** as published by the Free Software Foundation; either version 2
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** of the License, or (at your option) any later version.
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**
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** This program is distributed in the hope that it will be useful,
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** but WITHOUT ANY WARRANTY; without even the implied warranty of
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** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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** GNU General Public License for more details.
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**
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** You should have received a copy of the GNU General Public License
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** along with this program; if not, write to the Free Software Foundation, Inc.,
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** 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*/
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2020-10-05 21:30:44 +00:00
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#include "../FileStream.h"
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#include "../MemoryStream.h"
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2017-08-05 17:47:05 +00:00
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#include "CDAccess.h"
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2020-11-03 18:14:41 +00:00
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#include <libchdr/chd.h>
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2017-08-05 17:47:05 +00:00
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struct CHDFILE_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[100];
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int32_t sectors; // Not including pregap sectors!
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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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uint32_t fileOffset;
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};
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class CDAccess_CHD : public CDAccess
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{
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public:
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CDAccess_CHD(const std::string& path, bool image_memcache);
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virtual ~CDAccess_CHD();
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virtual bool Read_Raw_Sector(uint8 *buf, int32 lba);
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virtual bool Fast_Read_Raw_PW_TSRE(uint8* pwbuf, int32 lba);
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virtual bool Read_TOC(TOC *toc);
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private:
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bool Load(const std::string& path, bool image_memcache);
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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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int32_t MakeSubPQ(int32_t lba, uint8_t *SubPWBuf) const;
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bool Read_CHD_Hunk_RAW(uint8_t *buf, int32_t lba, CHDFILE_TRACK_INFO* track);
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2017-08-07 14:38:59 +00:00
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bool Read_CHD_Hunk_M1(uint8_t *buf, int32_t lba, CHDFILE_TRACK_INFO* track);
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bool Read_CHD_Hunk_M2(uint8_t *buf, int32_t lba, CHDFILE_TRACK_INFO* track);
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2017-08-05 17:47:05 +00:00
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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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TOC toc;
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CHDFILE_TRACK_INFO Tracks[100]; // Track #0(HMM?) through 99
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//struct disc;
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//struct session sessions[DISC_MAX_SESSIONS];
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int num_sessions;
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//struct track tracks[DISC_MAX_TRACKS];
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int num_tracks;
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chd_file *chd;
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/* hunk data cache */
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uint8_t *hunkmem;
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/* last hunknum read */
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int oldhunk;
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};
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