457 lines
10 KiB
C++
457 lines
10 KiB
C++
/* Mednafen - Multi-system Emulator
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (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
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#define EXTERNAL_LIBCDIO_CONFIG_H 1
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#include "../mednafen.h"
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#include "../general.h"
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#include "CDAccess.h"
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#include "CDAccess_Physical.h"
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#include <time.h>
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#include <stdlib.h>
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#include <string>
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#include <vector>
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#include <cdio/cdio.h>
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#include <cdio/mmc.h>
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#include <cdio/logging.h>
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#if LIBCDIO_VERSION_NUM >= 83
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#include <cdio/mmc_cmds.h>
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#endif
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using namespace CDUtility;
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static bool Logging = false;
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static std::string LogMessage;
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static void LogHandler(cdio_log_level_t level, const char message[])
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{
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if(!Logging)
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return;
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try
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{
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if(LogMessage.size() > 0)
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LogMessage.append(" - ");
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LogMessage.append(message);
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}
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catch(...) // Don't throw exceptions through libcdio's code.
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{
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LogMessage.clear();
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}
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}
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static INLINE void StartLogging(void)
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{
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Logging = true;
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LogMessage.clear();
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}
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static INLINE void ClearLogging(void)
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{
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LogMessage.clear();
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}
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static INLINE std::string StopLogging(void)
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{
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std::string ret = LogMessage;
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Logging = false;
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LogMessage.clear();
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return(ret);
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}
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void CDAccess_Physical::DetermineFeatures(void)
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{
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uint8 buf[256];
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mmc_cdb_t cdb = {{0, }};
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CDIO_MMC_SET_COMMAND(cdb.field, CDIO_MMC_GPCMD_MODE_SENSE_10);
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memset(buf, 0, sizeof(buf));
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cdb.field[2] = 0x2A;
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cdb.field[7] = sizeof(buf) >> 8;
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cdb.field[8] = sizeof(buf) & 0xFF;
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StartLogging();
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if(mmc_run_cmd ((CdIo *)p_cdio, MMC_TIMEOUT_DEFAULT,
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&cdb,
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SCSI_MMC_DATA_READ,
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sizeof(buf),
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buf))
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{
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throw(MDFN_Error(0, _("MMC [MODE SENSE 10] command failed: %s"), StopLogging().c_str()));
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}
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else
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{
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const uint8 *pd = &buf[8];
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StopLogging();
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if(pd[0] != 0x2A || pd[1] < 0x14)
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{
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throw(MDFN_Error(0, _("MMC [MODE SENSE 10] command returned bogus data for mode page 0x2A.")));
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}
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if(!(pd[4] & 0x10))
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{
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throw(MDFN_Error(0, _("Drive does not support reading Mode 2 Form 1 sectors.")));
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}
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if(!(pd[4] & 0x20))
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{
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throw(MDFN_Error(0, _("Drive does not support reading Mode 2 Form 2 sectors.")));
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}
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if(!(pd[5] & 0x01))
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{
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throw(MDFN_Error(0, _("Reading CD-DA sectors via \"READ CD\" is not supported.")));
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}
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if(!(pd[5] & 0x02))
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{
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throw(MDFN_Error(0, _("Read CD-DA sectors via \"READ CD\" are not positionally-accurate.")));
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}
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if(!(pd[5] & 0x04))
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{
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throw(MDFN_Error(0, _("Reading raw subchannel data via \"READ CD\" is not supported.")));
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}
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}
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}
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void CDAccess_Physical::PreventAllowMediumRemoval(bool prevent)
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{
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#if 0
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mmc_cdb_t cdb = {{0, }};
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uint8 buf[8];
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cdb.field[0] = 0x1E;
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cdb.field[1] = 0x00;
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cdb.field[2] = 0x00;
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cdb.field[3] = 0x00;
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cdb.field[4] = 0x00; //prevent;
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cdb.field[5] = 0x00;
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printf("%d\n", mmc_run_cmd_len (p_cdio, MMC_TIMEOUT_DEFAULT,
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&cdb, 6,
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SCSI_MMC_DATA_READ, 0, buf));
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assert(0);
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#endif
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}
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// To be used in the future for constructing semi-raw TOC data.
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#if 0
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static uint8 cond_hex_to_bcd(uint8 val)
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{
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if( ((val & 0xF) > 0x9) || ((val & 0xF0) > 0x90) )
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return val;
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return U8_to_BCD(val);
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}
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#endif
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void CDAccess_Physical::ReadPhysDiscInfo(unsigned retry)
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{
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mmc_cdb_t cdb = {{0, }};
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std::vector<uint8> toc_buffer;
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int64 start_time = time(NULL);
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int cdio_rc;
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toc_buffer.resize(0x3FFF); // (2**(8 * 2 - 1 - 1)) - 1, in case the drive has buggy firmware which chops upper bits off or overflows with values near
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// the max of a 16-bit signed value
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cdb.field[0] = 0x43; // Read TOC
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cdb.field[1] = 0x00;
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cdb.field[2] = 0x02; // Format 0010b
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cdb.field[3] = 0x00;
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cdb.field[4] = 0x00;
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cdb.field[5] = 0x00;
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cdb.field[6] = 0x01; // First session number
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cdb.field[7] = toc_buffer.size() >> 8;
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cdb.field[8] = toc_buffer.size() & 0xFF;
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cdb.field[9] = 0x00;
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StartLogging();
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while((cdio_rc = mmc_run_cmd ((CdIo *)p_cdio, MMC_TIMEOUT_DEFAULT,
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&cdb,
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SCSI_MMC_DATA_READ,
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toc_buffer.size(),
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&toc_buffer[0])))
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{
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if(!retry || time(NULL) >= (start_time + retry))
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{
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throw(MDFN_Error(0, _("Error reading disc TOC: %s"), StopLogging().c_str()));
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}
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else
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ClearLogging();
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}
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StopLogging();
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PhysTOC.Clear();
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{
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int32 len_counter = MDFN_de16msb(&toc_buffer[0]) - 2;
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uint8 *tbi = &toc_buffer[4];
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if(len_counter < 0 || (len_counter % 11) != 0)
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throw MDFN_Error(0, _("READ TOC command response data is of an invalid length."));
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while(len_counter)
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{
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// Ref: MMC-3 draft revision 10g, page 221
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uint8 sess MDFN_NOWARN_UNUSED = tbi[0];
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uint8 adr_ctrl = tbi[1];
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uint8 tno MDFN_NOWARN_UNUSED = tbi[2];
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uint8 point = tbi[3];
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uint8 min MDFN_NOWARN_UNUSED = tbi[4];
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uint8 sec MDFN_NOWARN_UNUSED = tbi[5];
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uint8 frame MDFN_NOWARN_UNUSED = tbi[6];
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uint8 hour_phour MDFN_NOWARN_UNUSED = tbi[7];
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uint8 pmin = tbi[8];
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uint8 psec = tbi[9];
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uint8 pframe = tbi[10];
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if((adr_ctrl >> 4) == 1)
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{
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switch(((adr_ctrl >> 4) << 8) | point)
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{
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case 0x101 ... 0x163:
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PhysTOC.tracks[point].adr = adr_ctrl >> 4;
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PhysTOC.tracks[point].control = adr_ctrl & 0xF;
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PhysTOC.tracks[point].lba = AMSF_to_LBA(pmin, psec, pframe);
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break;
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case 0x1A0:
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PhysTOC.first_track = pmin;
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PhysTOC.disc_type = psec;
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break;
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case 0x1A1:
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PhysTOC.last_track = pmin;
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break;
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case 0x1A2:
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PhysTOC.tracks[100].adr = adr_ctrl >> 4;
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PhysTOC.tracks[100].control = adr_ctrl & 0xF;
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PhysTOC.tracks[100].lba = AMSF_to_LBA(pmin, psec, pframe);
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break;
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default:
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//MDFN_printf("%02x %02x\n", adr_ctrl >> 4, point);
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break;
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}
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}
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tbi += 11;
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len_counter -= 11;
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}
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}
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if(PhysTOC.first_track < 1 || PhysTOC.first_track > 99)
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{
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throw(MDFN_Error(0, _("Invalid first track: %d\n"), PhysTOC.first_track));
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}
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if(PhysTOC.last_track > 99 || PhysTOC.last_track < PhysTOC.first_track)
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{
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throw(MDFN_Error(0, _("Invalid last track: %d\n"), PhysTOC.last_track));
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}
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// Convenience leadout track duplication.
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if(PhysTOC.last_track < 99)
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PhysTOC.tracks[PhysTOC.last_track + 1] = PhysTOC.tracks[100];
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}
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void CDAccess_Physical::Read_TOC(TOC *toc)
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{
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*toc = PhysTOC;
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}
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void CDAccess_Physical::Read_Raw_Sector(uint8 *buf, int32 lba)
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{
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mmc_cdb_t cdb = {{0, }};
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int cdio_rc;
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CDIO_MMC_SET_COMMAND(cdb.field, CDIO_MMC_GPCMD_READ_CD);
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CDIO_MMC_SET_READ_TYPE (cdb.field, CDIO_MMC_READ_TYPE_ANY);
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CDIO_MMC_SET_READ_LBA (cdb.field, lba);
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CDIO_MMC_SET_READ_LENGTH24(cdb.field, 1);
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StartLogging();
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if(SkipSectorRead[(lba >> 3) & 0xFFFF] & (1 << (lba & 7)))
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{
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printf("Read(skipped): %d\n", lba);
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memset(buf, 0, 2352);
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cdb.field[9] = 0x00;
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cdb.field[10] = 0x01;
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if((cdio_rc = mmc_run_cmd ((CdIo *)p_cdio, MMC_TIMEOUT_DEFAULT,
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&cdb,
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SCSI_MMC_DATA_READ,
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96,
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buf + 2352)))
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{
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throw(MDFN_Error(0, _("MMC Read Error: %s"), StopLogging().c_str()));
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}
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}
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else
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{
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cdb.field[9] = 0xF8;
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cdb.field[10] = 0x01;
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if((cdio_rc = mmc_run_cmd ((CdIo *)p_cdio, MMC_TIMEOUT_DEFAULT,
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&cdb,
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SCSI_MMC_DATA_READ,
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2352 + 96,
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buf)))
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{
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throw(MDFN_Error(0, _("MMC Read Error: %s"), StopLogging().c_str()));
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}
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}
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StopLogging();
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}
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CDAccess_Physical::CDAccess_Physical(const std::string& path)
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{
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char **devices = NULL;
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char **parseit = NULL;
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p_cdio = NULL;
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cdio_init();
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cdio_log_set_handler(LogHandler);
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//
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//
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//
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try
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{
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devices = cdio_get_devices(DRIVER_DEVICE);
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parseit = devices;
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if(parseit)
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{
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MDFN_printf(_("Connected physical devices:\n"));
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MDFN_indent(1);
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while(*parseit)
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{
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MDFN_printf("%s\n", *parseit);
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parseit++;
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}
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MDFN_indent(-1);
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}
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if(!parseit || parseit == devices)
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{
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throw(MDFN_Error(0, _("No CDROM drives detected(or no disc present).")));
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}
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if(devices)
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{
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cdio_free_device_list(devices);
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devices = NULL;
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}
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StartLogging();
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p_cdio = cdio_open_cd(path.c_str());
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if(!p_cdio)
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{
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throw(MDFN_Error(0, _("Error opening physical CD: %s"), StopLogging().c_str()));
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}
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StopLogging();
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//PreventAllowMediumRemoval(true);
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ReadPhysDiscInfo(0);
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//
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// Determine how we can read this CD.
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//
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DetermineFeatures();
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memset(SkipSectorRead, 0, sizeof(SkipSectorRead));
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}
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catch(std::exception &e)
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{
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if(devices)
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cdio_free_device_list(devices);
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if(p_cdio)
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cdio_destroy((CdIo *)p_cdio);
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throw;
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}
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}
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CDAccess_Physical::~CDAccess_Physical()
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{
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cdio_destroy((CdIo *)p_cdio);
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}
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bool CDAccess_Physical::Is_Physical(void) throw()
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{
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return(true);
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}
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void CDAccess_Physical::Eject(bool eject_status)
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{
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int cdio_rc;
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StartLogging();
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#if LIBCDIO_VERSION_NUM >= 83
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if((cdio_rc = mmc_start_stop_unit((CdIo *)p_cdio, eject_status, false, 0, 0)) != 0)
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{
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if(cdio_rc != DRIVER_OP_UNSUPPORTED) // Don't error out if it's just an unsupported operation.
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throw(MDFN_Error(0, _("Error ejecting medium: %s"), StopLogging().c_str()));
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}
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#else
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if((cdio_rc = mmc_start_stop_media((CdIo *)p_cdio, eject_status, false, 0)) != 0)
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{
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if(cdio_rc != DRIVER_OP_UNSUPPORTED) // Don't error out if it's just an unsupported operation.
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throw(MDFN_Error(0, _("Error ejecting medium: %s"), StopLogging().c_str()));
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}
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#endif
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StopLogging();
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if(!eject_status)
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{
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try
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{
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ReadPhysDiscInfo(10);
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}
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catch(std::exception &e)
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{
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#if LIBCDIO_VERSION_NUM >= 83
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mmc_start_stop_unit((CdIo *)p_cdio, true, false, 0, 0); // Eject disc, if possible.
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#else
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mmc_start_stop_media((CdIo *)p_cdio, true, false, 0); // Eject disc, if possible.
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#endif
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throw;
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}
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}
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}
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