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a412ceb4d920d173542c69f73cd1051b146f554e
86Box/src/cdrom/cdrom_image.cc
OBattler a412ceb4d9 Applied all relevant PCem commits; 
Extensively cleaned up and changed the CD-ROM code;
Removed CD-ROM IOCTTL (it was causing performance and stability issues);
Turned a lot of things into device_t's;
Added the PS/1 Model 2011 XTA and standalone XTA hard disk controllers, ported from Varcem;
Numerous FDC fixes for the PS/1 Model 2121;
NVR changes ported from Varcem;
The PCap code no longer requires libpcap to be compiled;
Numerous fixes to various SCSI controllers;
Updated NukedOPL to 1.8;
Fixes to OpenAL initialization and closing, should give less Audio issues now;
Revorked parts of the common (S)VGA code (also based on code from QEMU);
Removed the Removable SCSI hard disks (they were a never finished experiment so there was no need to keep them there);
Cleaned up the SCSI hard disk and Iomega ZIP code (but more cleanups of that are coming in the future);
In some occasions (IDE hard disks in multiple sector mode and SCSI hard disks) the status bar icon is no longer updated, should improve performance a bit;
Redid the way the tertiary and quaternary IDE controllers are configured (and they are now device_t's);
Extensively reworked the IDE code and fixed quite a few bugs;
Fixes to XT MFM, AT MFM, and AT ESDI code;
Some changes to XTIDE and MCA ESDI code;
Some fixes to the CD-ROM image handler.
2018-04-25 23:51:13 +02:00

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/*
* 86Box A hypervisor and IBM PC system emulator that specializes in
* running old operating systems and software designed for IBM
* PC systems and compatibles from 1981 through fairly recent
* system designs based on the PCI bus.
*
* This file is part of the 86Box distribution.
*
* CD-ROM image support.
*
* Version: @(#)cdrom_image.cc 1.0.0 2018/03/29
*
* Author: RichardG867,
* Miran Grca, <mgrca8@gmail.com>
* bit,
*
* Copyright 2015-2018 Richardg867.
* Copyright 2015-2018 Miran Grca.
* Copyright 2017,2018 bit.
*/
#define __USE_LARGEFILE64
#define _LARGEFILE_SOURCE
#define _LARGEFILE64_SOURCE
#include <stdarg.h>
#include <stdio.h>
#include <stdint.h>
#include <string.h>
#include <stdlib.h>
#include <wchar.h>
#include "../config.h"
#include "../plat.h"
#include "../scsi/scsi.h"
#include "cdrom_dosbox.h"
#include "cdrom.h"
#include "cdrom_image.h"
#include "cdrom_null.h"
#define CD_STATUS_EMPTY 0
#define CD_STATUS_DATA_ONLY 1
#define CD_STATUS_PLAYING 2
#define CD_STATUS_PAUSED 3
#define CD_STATUS_STOPPED 4
/* The addresses sent from the guest are absolute, ie. a LBA of 0 corresponds to a MSF of 00:00:00. Otherwise, the counter displayed by the guest is wrong:
there is a seeming 2 seconds in which audio plays but counter does not move, while a data track before audio jumps to 2 seconds before the actual start
of the audio while audio still plays. With an absolute conversion, the counter is fine. */
#define MSFtoLBA(m,s,f) ((((m*60)+s)*75)+f)
extern CDROM image_cdrom;
typedef struct __attribute__((__packed__))
{
uint8_t user_data[2048],
ecc[288];
} m1_data_t;
typedef struct __attribute__((__packed__))
{
uint8_t sub_header[8],
user_data[2328];
} m2_data_t;
typedef union __attribute__((__packed__))
{
m1_data_t m1_data;
m2_data_t m2_data;
uint8_t raw_data[2336];
} sector_data_t;
typedef struct __attribute__((__packed__))
{
uint8_t sync[12];
uint8_t header[4];
sector_data_t data;
} sector_raw_data_t;
typedef union __attribute__((__packed__))
{
sector_raw_data_t sector_data;
uint8_t raw_data[2352];
} sector_t;
typedef struct __attribute__((__packed__))
{
sector_t sector;
uint8_t c2[296];
uint8_t subchannel_raw[96];
uint8_t subchannel_q[16];
uint8_t subchannel_rw[96];
} cdrom_sector_t;
typedef union __attribute__((__packed__))
{
cdrom_sector_t cdrom_sector;
uint8_t buffer[2856];
} sector_buffer_t;
sector_buffer_t cdrom_sector_buffer;
int cdrom_sector_size;
uint8_t raw_buffer[2448];
uint8_t extra_buffer[296];
enum
{
CD_STOPPED = 0,
CD_PLAYING,
CD_PAUSED
};
#ifdef ENABLE_CDROM_IMAGE_LOG
int cdrom_image_do_log = ENABLE_CDROM_IMAGE_LOG;
#endif
static CDROM_Interface_Image* cdimg[CDROM_NUM] = { NULL, NULL, NULL, NULL };
static char afn[1024];
void image_close(uint8_t id);
void
cdrom_image_log(const char *format, ...)
{
#ifdef ENABLE_CDROM_IMAGE_LOG
if (cdrom_image_do_log) {
va_list ap;
va_start(ap, format);
vprintf(format, ap);
va_end(ap);
fflush(stdout);
}
#endif
}
int
image_audio_callback(uint8_t id, int16_t *output, int len)
{
cdrom_t *dev = cdrom[id];
int ret = 1;
if (!cdrom_drives[id].sound_on || (dev->cd_state != CD_PLAYING) || cdrom_image[id].image_is_iso) {
cdrom_image_log("image_audio_callback(i): Not playing\n", id);
if (dev->cd_state == CD_PLAYING)
dev->seek_pos += (len >> 11);
memset(output, 0, len * 2);
return 0;
}
while (dev->cd_buflen < len) {
if (dev->seek_pos < dev->cd_end) {
if (!cdimg[id]->ReadSector((unsigned char*)&dev->cd_buffer[dev->cd_buflen], true,
dev->seek_pos)) {
memset(&dev->cd_buffer[dev->cd_buflen], 0, (BUF_SIZE - dev->cd_buflen) * 2);
dev->cd_state = CD_STOPPED;
dev->cd_buflen = len;
ret = 0;
} else {
dev->seek_pos++;
dev->cd_buflen += (RAW_SECTOR_SIZE / 2);
ret = 1;
}
} else {
memset(&dev->cd_buffer[dev->cd_buflen], 0, (BUF_SIZE - dev->cd_buflen) * 2);
dev->cd_state = CD_STOPPED;
dev->cd_buflen = len;
ret = 0;
}
}
memcpy(output, dev->cd_buffer, len * 2);
memmove(dev->cd_buffer, &dev->cd_buffer[len], (BUF_SIZE - len) * 2);
dev->cd_buflen -= len;
return ret;
}
void
image_audio_stop(uint8_t id)
{
cdrom_t *dev = cdrom[id];
dev->cd_state = CD_STOPPED;
}
static uint8_t
image_playaudio(uint8_t id, uint32_t pos, uint32_t len, int ismsf)
{
cdrom_t *dev = cdrom[id];
if (!cdimg[id])
return 0;
int number;
unsigned char attr;
TMSF tmsf;
int m = 0, s = 0, f = 0;
cdimg[id]->GetAudioTrackInfo(cdimg[id]->GetTrack(pos), number, tmsf, attr);
if (attr == DATA_TRACK) {
cdrom_image_log("Can't play data track\n");
dev->seek_pos = 0;
dev->cd_state = CD_STOPPED;
return 0;
}
cdrom_image_log("Play audio - %08X %08X %i\n", pos, len, ismsf);
if (ismsf == 2) {
cdimg[id]->GetAudioTrackInfo(pos, number, tmsf, attr);
pos = MSFtoLBA(tmsf.min, tmsf.sec, tmsf.fr) - 150;
cdimg[id]->GetAudioTrackInfo(len, number, tmsf, attr);
len = MSFtoLBA(tmsf.min, tmsf.sec, tmsf.fr) - 150;
} else if (ismsf == 1) {
m = (pos >> 16) & 0xff;
s = (pos >> 8) & 0xff;
f = pos & 0xff;
if (pos == 0xffffff) {
cdrom_image_log("Playing from current position (MSF)\n");
pos = dev->seek_pos;
} else
pos = MSFtoLBA(m, s, f) - 150;
m = (len >> 16) & 0xff;
s = (len >> 8) & 0xff;
f = len & 0xff;
len = MSFtoLBA(m, s, f) - 150;
cdrom_image_log("MSF - pos = %08X len = %08X\n", pos, len);
} else if (ismsf == 0) {
if (pos == 0xffffffff) {
cdrom_image_log("Playing from current position\n");
pos = dev->seek_pos;
}
len += pos;
}
dev->seek_pos = pos;
dev->cd_end = len;
dev->cd_state = CD_PLAYING;
dev->cd_buflen = 0;
return 1;
}
static void
image_pause(uint8_t id)
{
cdrom_t *dev = cdrom[id];
if (!cdimg[id] || cdrom_image[id].image_is_iso) return;
if (dev->cd_state == CD_PLAYING)
dev->cd_state = CD_PAUSED;
}
static void
image_resume(uint8_t id)
{
cdrom_t *dev = cdrom[id];
if (!cdimg[id] || cdrom_image[id].image_is_iso)
return;
if (dev->cd_state == CD_PAUSED)
dev->cd_state = CD_PLAYING;
}
static void
image_stop(uint8_t id)
{
cdrom_t *dev = cdrom[id];
if (!cdimg[id] || cdrom_image[id].image_is_iso)
return;
dev->cd_state = CD_STOPPED;
}
static int
image_ready(uint8_t id)
{
if (!cdimg[id] || (wcslen(cdrom_image[id].image_path) == 0))
return 0;
return 1;
}
static int
image_get_last_block(uint8_t id)
{
int first_track, last_track;
int number, c;
unsigned char attr;
TMSF tmsf;
uint32_t lb=0;
if (!cdimg[id])
return 0;
cdimg[id]->GetAudioTracks(first_track, last_track, tmsf);
for (c = 0; c <= last_track; c++) {
uint32_t address;
cdimg[id]->GetAudioTrackInfo(c+1, number, tmsf, attr);
address = MSFtoLBA(tmsf.min, tmsf.sec, tmsf.fr) - 150; /* Do the - 150 here as well. */
if (address > lb)
lb = address;
}
return lb;
}
static int
image_medium_changed(uint8_t id)
{
/* There is no way to change the medium within an already mounted image. */
return 0;
}
static uint8_t
image_getcurrentsubchannel(uint8_t id, uint8_t *b, int msf)
{
cdrom_t *dev = cdrom[id];
uint8_t ret;
int pos = 0;
uint32_t cdpos;
TMSF relPos, absPos;
unsigned char attr, track, index;
cdpos = dev->seek_pos;
if (!cdimg[id])
return 0;
cdimg[id]->GetAudioSub(cdpos, attr, track, index, relPos, absPos);
if (cdrom_image[id].image_is_iso)
ret = 0x15;
else {
if (dev->cd_state == CD_PLAYING)
ret = 0x11;
else if (dev->cd_state == CD_PAUSED)
ret = 0x12;
else
ret = 0x13;
}
b[pos++] = attr;
b[pos++] = track;
b[pos++] = index;
if (msf) {
b[pos + 3] = (uint8_t) absPos.fr;
b[pos + 2] = (uint8_t) absPos.sec;
b[pos + 1] = (uint8_t) absPos.min;
b[pos] = 0;
pos += 4;
b[pos + 3] = (uint8_t) relPos.fr;
b[pos + 2] = (uint8_t) relPos.sec;
b[pos + 1] = (uint8_t) relPos.min;
b[pos] = 0;
pos += 4;
} else {
uint32_t dat = MSFtoLBA(absPos.min, absPos.sec, absPos.fr) - 150;
b[pos++] = (dat >> 24) & 0xff;
b[pos++] = (dat >> 16) & 0xff;
b[pos++] = (dat >> 8) & 0xff;
b[pos++] = dat & 0xff;
dat = MSFtoLBA(relPos.min, relPos.sec, relPos.fr);
b[pos++] = (dat >> 24) & 0xff;
b[pos++] = (dat >> 16) & 0xff;
b[pos++] = (dat >> 8) & 0xff;
b[pos++] = dat & 0xff;
}
return ret;
}
static int
image_is_track_audio(uint8_t id, uint32_t pos, int ismsf)
{
int m, s, f;
unsigned char attr;
TMSF tmsf;
int number;
if (!cdimg[id] || cdrom_image[id].image_is_iso)
return 0;
if (ismsf) {
m = (pos >> 16) & 0xff;
s = (pos >> 8) & 0xff;
f = pos & 0xff;
pos = MSFtoLBA(m, s, f) - 150;
}
/* GetTrack requires LBA. */
cdimg[id]->GetAudioTrackInfo(cdimg[id]->GetTrack(pos), number, tmsf, attr);
return attr == AUDIO_TRACK;
}
static int
is_legal(int id, int cdrom_sector_type, int cdrom_sector_flags, int audio, int mode2)
{
if (!(cdrom_sector_flags & 0x70)) { /* 0x00/0x08/0x80/0x88 are illegal modes */
cdrom_image_log("CD-ROM %i: [Any Mode] 0x00/0x08/0x80/0x88 are illegal modes\n", id);
return 0;
}
if ((cdrom_sector_type != 1) && !audio) {
if (!(cdrom_sector_flags & 0x70)) { /* 0x00/0x08/0x80/0x88 are illegal modes */
cdrom_image_log("CD-ROM %i: [Any Data Mode] 0x00/0x08/0x80/0x88 are illegal modes\n", id);
return 0;
}
if ((cdrom_sector_flags & 0x06) == 0x06) {
cdrom_image_log("CD-ROM %i: [Any Data Mode] Invalid error flags\n", id);
return 0;
}
if (((cdrom_sector_flags & 0x700) == 0x300) || ((cdrom_sector_flags & 0x700) > 0x400)) {
cdrom_image_log("CD-ROM %i: [Any Data Mode] Invalid subchannel data flags (%02X)\n", id, cdrom_sector_flags & 0x700);
return 0;
}
if ((cdrom_sector_flags & 0x18) == 0x08) { /* EDC/ECC without user data is an illegal mode */
cdrom_image_log("CD-ROM %i: [Any Data Mode] EDC/ECC without user data is an illegal mode\n", id);
return 0;
}
if (((cdrom_sector_flags & 0xf0) == 0x90) || ((cdrom_sector_flags & 0xf0) == 0xc0)) { /* 0x90/0x98/0xC0/0xC8 are illegal modes */
cdrom_image_log("CD-ROM %i: [Any Data Mode] 0x90/0x98/0xC0/0xC8 are illegal modes\n", id);
return 0;
}
if (((cdrom_sector_type > 3) && (cdrom_sector_type != 8)) || (mode2 && (mode2 & 0x03))) {
if ((cdrom_sector_flags & 0xf0) == 0x30) { /* 0x30/0x38 are illegal modes */
cdrom_image_log("CD-ROM %i: [Any XA Mode 2] 0x30/0x38 are illegal modes\n", id);
return 0;
}
if (((cdrom_sector_flags & 0xf0) == 0xb0) || ((cdrom_sector_flags & 0xf0) == 0xd0)) { /* 0xBx and 0xDx are illegal modes */
cdrom_image_log("CD-ROM %i: [Any XA Mode 2] 0xBx and 0xDx are illegal modes\n", id);
return 0;
}
}
}
return 1;
}
static void
read_sector_to_buffer(uint8_t id, uint8_t *raw_buffer, uint32_t msf, uint32_t lba, int mode2, int len)
{
uint8_t *bb = raw_buffer;
cdimg[id]->ReadSector(raw_buffer + 16, false, lba);
/* Sync bytes */
bb[0] = 0;
memset(bb + 1, 0xff, 10);
bb[11] = 0;
bb += 12;
/* Sector header */
bb[0] = (msf >> 16) & 0xff;
bb[1] = (msf >> 8) & 0xff;
bb[2] = msf & 0xff;
bb[3] = 1; /* mode 1 data */
bb += mode2 ? 12 : 4;
bb += len;
if (mode2 && ((mode2 & 0x03) == 1))
memset(bb, 0, 280);
else if (!mode2)
memset(bb, 0, 288);
}
static void
read_audio(int id, uint32_t lba, uint8_t *b)
{
if (cdimg[id]->GetSectorSize(lba) == 2352)
cdimg[id]->ReadSector(raw_buffer, true, lba);
else
cdimg[id]->ReadSectorSub(raw_buffer, lba);
memcpy(b, raw_buffer, 2352);
cdrom_sector_size = 2352;
}
static void
read_mode1(int id, int cdrom_sector_flags, uint32_t lba, uint32_t msf, int mode2, uint8_t *b)
{
if ((cdrom_image[id].image_is_iso) || (cdimg[id]->GetSectorSize(lba) == 2048))
read_sector_to_buffer(id, raw_buffer, msf, lba, mode2, 2048);
else if (cdimg[id]->GetSectorSize(lba) == 2352)
cdimg[id]->ReadSector(raw_buffer, true, lba);
else
cdimg[id]->ReadSectorSub(raw_buffer, lba);
cdrom_sector_size = 0;
if (cdrom_sector_flags & 0x80) { /* Sync */
cdrom_image_log("CD-ROM %i: [Mode 1] Sync\n", id);
memcpy(b, raw_buffer, 12);
cdrom_sector_size += 12;
b += 12;
}
if (cdrom_sector_flags & 0x20) { /* Header */
cdrom_image_log("CD-ROM %i: [Mode 1] Header\n", id);
memcpy(b, raw_buffer + 12, 4);
cdrom_sector_size += 4;
b += 4;
}
if (cdrom_sector_flags & 0x40) { /* Sub-header */
if (!(cdrom_sector_flags & 0x10)) { /* No user data */
cdrom_image_log("CD-ROM %i: [Mode 1] Sub-header\n", id);
memcpy(b, raw_buffer + 16, 8);
cdrom_sector_size += 8;
b += 8;
}
}
if (cdrom_sector_flags & 0x10) { /* User data */
cdrom_image_log("CD-ROM %i: [Mode 1] User data\n", id);
memcpy(b, raw_buffer + 16, 2048);
cdrom_sector_size += 2048;
b += 2048;
}
if (cdrom_sector_flags & 0x08) { /* EDC/ECC */
cdrom_image_log("CD-ROM %i: [Mode 1] EDC/ECC\n", id);
memcpy(b, raw_buffer + 2064, 288);
cdrom_sector_size += 288;
b += 288;
}
}
static void
read_mode2_non_xa(int id, int cdrom_sector_flags, uint32_t lba, uint32_t msf, int mode2, uint8_t *b)
{
if ((cdrom_image[id].image_is_iso) || (cdimg[id]->GetSectorSize(lba) == 2336))
read_sector_to_buffer(id, raw_buffer, msf, lba, mode2, 2336);
else if (cdimg[id]->GetSectorSize(lba) == 2352)
cdimg[id]->ReadSector(raw_buffer, true, lba);
else
cdimg[id]->ReadSectorSub(raw_buffer, lba);
cdrom_sector_size = 0;
if (cdrom_sector_flags & 0x80) { /* Sync */
cdrom_image_log("CD-ROM %i: [Mode 2 Formless] Sync\n", id);
memcpy(b, raw_buffer, 12);
cdrom_sector_size += 12;
b += 12;
}
if (cdrom_sector_flags & 0x20) { /* Header */
cdrom_image_log("CD-ROM %i: [Mode 2 Formless] Header\n", id);
memcpy(b, raw_buffer + 12, 4);
cdrom_sector_size += 4;
b += 4;
}
/* Mode 1 sector, expected type is 1 type. */
if (cdrom_sector_flags & 0x40) { /* Sub-header */
cdrom_image_log("CD-ROM %i: [Mode 2 Formless] Sub-header\n", id);
memcpy(b, raw_buffer + 16, 8);
cdrom_sector_size += 8;
b += 8;
}
if (cdrom_sector_flags & 0x10) { /* User data */
cdrom_image_log("CD-ROM %i: [Mode 2 Formless] User data\n", id);
memcpy(b, raw_buffer + 24, 2336);
cdrom_sector_size += 2336;
b += 2336;
}
}
static void
read_mode2_xa_form1(int id, int cdrom_sector_flags, uint32_t lba, uint32_t msf, int mode2, uint8_t *b)
{
if ((cdrom_image[id].image_is_iso) || (cdimg[id]->GetSectorSize(lba) == 2048))
read_sector_to_buffer(id, raw_buffer, msf, lba, mode2, 2048);
else if (cdimg[id]->GetSectorSize(lba) == 2352)
cdimg[id]->ReadSector(raw_buffer, true, lba);
else
cdimg[id]->ReadSectorSub(raw_buffer, lba);
cdrom_sector_size = 0;
if (cdrom_sector_flags & 0x80) { /* Sync */
cdrom_image_log("CD-ROM %i: [XA Mode 2 Form 1] Sync\n", id);
memcpy(b, raw_buffer, 12);
cdrom_sector_size += 12;
b += 12;
}
if (cdrom_sector_flags & 0x20) { /* Header */
cdrom_image_log("CD-ROM %i: [XA Mode 2 Form 1] Header\n", id);
memcpy(b, raw_buffer + 12, 4);
cdrom_sector_size += 4;
b += 4;
}
if (cdrom_sector_flags & 0x40) { /* Sub-header */
cdrom_image_log("CD-ROM %i: [XA Mode 2 Form 1] Sub-header\n", id);
memcpy(b, raw_buffer + 16, 8);
cdrom_sector_size += 8;
b += 8;
}
if (cdrom_sector_flags & 0x10) { /* User data */
cdrom_image_log("CD-ROM %i: [XA Mode 2 Form 1] User data\n", id);
memcpy(b, raw_buffer + 24, 2048);
cdrom_sector_size += 2048;
b += 2048;
}
if (cdrom_sector_flags & 0x08) { /* EDC/ECC */
cdrom_image_log("CD-ROM %i: [XA Mode 2 Form 1] EDC/ECC\n", id);
memcpy(b, raw_buffer + 2072, 280);
cdrom_sector_size += 280;
b += 280;
}
}
static void
read_mode2_xa_form2(int id, int cdrom_sector_flags, uint32_t lba, uint32_t msf, int mode2, uint8_t *b)
{
if ((cdrom_image[id].image_is_iso) || (cdimg[id]->GetSectorSize(lba) == 2324))
read_sector_to_buffer(id, raw_buffer, msf, lba, mode2, 2324);
else if (cdimg[id]->GetSectorSize(lba) == 2352)
cdimg[id]->ReadSector(raw_buffer, true, lba);
else
cdimg[id]->ReadSectorSub(raw_buffer, lba);
cdrom_sector_size = 0;
if (cdrom_sector_flags & 0x80) { /* Sync */
cdrom_image_log("CD-ROM %i: [XA Mode 2 Form 2] Sync\n", id);
memcpy(b, raw_buffer, 12);
cdrom_sector_size += 12;
b += 12;
}
if (cdrom_sector_flags & 0x20) { /* Header */
cdrom_image_log("CD-ROM %i: [XA Mode 2 Form 2] Header\n", id);
memcpy(b, raw_buffer + 12, 4);
cdrom_sector_size += 4;
b += 4;
}
if (cdrom_sector_flags & 0x40) { /* Sub-header */
cdrom_image_log("CD-ROM %i: [XA Mode 2 Form 2] Sub-header\n", id);
memcpy(b, raw_buffer + 16, 8);
cdrom_sector_size += 8;
b += 8;
}
if (cdrom_sector_flags & 0x10) { /* User data */
cdrom_image_log("CD-ROM %i: [XA Mode 2 Form 2] User data\n", id);
memcpy(b, raw_buffer + 24, 2328);
cdrom_sector_size += 2328;
b += 2328;
}
}
static int
image_readsector_raw(uint8_t id, uint8_t *buffer, int sector, int ismsf, int cdrom_sector_type,
int cdrom_sector_flags, int *len)
{
uint8_t *b, *temp_b;
uint32_t msf, lba;
int audio, mode2;
int m, s, f;
if (!cdimg[id])
return 0;
if (!cdrom_drives[id].host_drive)
return 0;
b = temp_b = buffer;
*len = 0;
if (ismsf) {
m = (sector >> 16) & 0xff;
s = (sector >> 8) & 0xff;
f = sector & 0xff;
lba = MSFtoLBA(m, s, f) - 150;
msf = sector;
} else {
lba = sector;
msf = cdrom_lba_to_msf_accurate(sector);
}
if (cdrom_image[id].image_is_iso) {
audio = 0;
mode2 = cdimg[id]->IsMode2(lba) ? 1 : 0;
} else {
audio = image_is_track_audio(id, sector, ismsf);
mode2 = cdimg[id]->IsMode2(lba) ? 1 : 0;
}
mode2 <<= 2;
mode2 |= cdimg[id]->GetMode2Form(lba);
memset(raw_buffer, 0, 2448);
memset(extra_buffer, 0, 296);
if (!(cdrom_sector_flags & 0xf0)) { /* 0x00 and 0x08 are illegal modes */
cdrom_image_log("CD-ROM %i: [Mode 1] 0x00 and 0x08 are illegal modes\n", id);
return 0;
}
if (!is_legal(id, cdrom_sector_type, cdrom_sector_flags, audio, mode2))
return 0;
if ((cdrom_sector_type == 3) || ((cdrom_sector_type > 4) && (cdrom_sector_type != 8))) {
if (cdrom_sector_type == 3)
cdrom_image_log("CD-ROM %i: Attempting to read a Yellowbook Mode 2 data sector from an image\n", id);
if (cdrom_sector_type > 4)
cdrom_image_log("CD-ROM %i: Attempting to read a XA Mode 2 Form 2 data sector from an image\n", id);
return 0;
} else if (cdrom_sector_type == 1) {
if (!audio || cdrom_image[id].image_is_iso) {
cdrom_image_log("CD-ROM %i: [Audio] Attempting to read an audio sector from a data image\n", id);
return 0;
}
read_audio(id, lba, temp_b);
} else if (cdrom_sector_type == 2) {
if (audio || mode2) {
cdrom_image_log("CD-ROM %i: [Mode 1] Attempting to read a sector of another type\n", id);
return 0;
}
read_mode1(id, cdrom_sector_flags, lba, msf, mode2, temp_b);
} else if (cdrom_sector_type == 3) {
if (audio || !mode2 || (mode2 & 0x03)) {
cdrom_image_log("CD-ROM %i: [Mode 2 Formless] Attempting to read a sector of another type\n", id);
return 0;
}
read_mode2_non_xa(id, cdrom_sector_flags, lba, msf, mode2, temp_b);
} else if (cdrom_sector_type == 4) {
if (audio || !mode2 || ((mode2 & 0x03) != 1)) {
cdrom_image_log("CD-ROM %i: [XA Mode 2 Form 1] Attempting to read a sector of another type\n", id);
return 0;
}
read_mode2_xa_form1(id, cdrom_sector_flags, lba, msf, mode2, temp_b);
} else if (cdrom_sector_type == 5) {
if (audio || !mode2 || ((mode2 & 0x03) != 2)) {
cdrom_image_log("CD-ROM %i: [XA Mode 2 Form 2] Attempting to read a sector of another type\n", id);
return 0;
}
read_mode2_xa_form2(id, cdrom_sector_flags, lba, msf, mode2, temp_b);
} else if (cdrom_sector_type == 8) {
if (audio) {
cdrom_image_log("CD-ROM %i: [Any Data] Attempting to read a data sector from an audio track\n", id);
return 0;
}
if (mode2 && ((mode2 & 0x03) == 1))
read_mode2_xa_form1(id, cdrom_sector_flags, lba, msf, mode2, temp_b);
else if (!mode2)
read_mode1(id, cdrom_sector_flags, lba, msf, mode2, temp_b);
else {
cdrom_image_log("CD-ROM %i: [Any Data] Attempting to read a data sector whose cooked size is not 2048 bytes\n", id);
return 0;
}
} else {
if (mode2) {
if ((mode2 & 0x03) == 0x01)
read_mode2_xa_form1(id, cdrom_sector_flags, lba, msf, mode2, temp_b);
else if ((mode2 & 0x03) == 0x02)
read_mode2_xa_form2(id, cdrom_sector_flags, lba, msf, mode2, temp_b);
else
read_mode2_non_xa(id, cdrom_sector_flags, lba, msf, mode2, temp_b);
} else {
if (audio)
read_audio(id, lba, temp_b);
else
read_mode1(id, cdrom_sector_flags, lba, msf, mode2, temp_b);
}
}
if ((cdrom_sector_flags & 0x06) == 0x02) {
/* Add error flags. */
cdrom_image_log("CD-ROM %i: Error flags\n", id);
memcpy(b + cdrom_sector_size, extra_buffer, 294);
cdrom_sector_size += 294;
} else if ((cdrom_sector_flags & 0x06) == 0x04) {
/* Add error flags. */
cdrom_image_log("CD-ROM %i: Full error flags\n", id);
memcpy(b + cdrom_sector_size, extra_buffer, 296);
cdrom_sector_size += 296;
}
if ((cdrom_sector_flags & 0x700) == 0x100) {
cdrom_image_log("CD-ROM %i: Raw subchannel data\n", id);
memcpy(b + cdrom_sector_size, raw_buffer + 2352, 96);
cdrom_sector_size += 96;
} else if ((cdrom_sector_flags & 0x700) == 0x200) {
cdrom_image_log("CD-ROM %i: Q subchannel data\n", id);
memcpy(b + cdrom_sector_size, raw_buffer + 2352, 16);
cdrom_sector_size += 16;
} else if ((cdrom_sector_flags & 0x700) == 0x400) {
cdrom_image_log("CD-ROM %i: R/W subchannel data\n", id);
memcpy(b + cdrom_sector_size, raw_buffer + 2352, 96);
cdrom_sector_size += 96;
}
*len = cdrom_sector_size;
return 1;
}
static uint32_t
image_size(uint8_t id)
{
cdrom_t *dev = cdrom[id];
return dev->cdrom_capacity;
}
static int
image_readtoc(uint8_t id, unsigned char *b, unsigned char starttrack, int msf, int maxlen, int single)
{
int number, len = 4;
int c, d, first_track, last_track;
uint32_t temp;
unsigned char attr;
TMSF tmsf;
if (!cdimg[id])
return 0;
cdimg[id]->GetAudioTracks(first_track, last_track, tmsf);
b[2] = first_track;
b[3] = last_track;
d = 0;
for (c = 0; c <= last_track; c++) {
cdimg[id]->GetAudioTrackInfo(c+1, number, tmsf, attr);
if (number >= starttrack) {
d=c;
break;
}
}
if (starttrack != 0xAA) {
cdimg[id]->GetAudioTrackInfo(c+1, number, tmsf, attr);
b[2] = number;
}
for (c = d; c <= last_track; c++) {
cdimg[id]->GetAudioTrackInfo(c+1, number, tmsf, attr);
b[len++] = 0; /* reserved */
b[len++] = attr;
b[len++] = number; /* track number */
b[len++] = 0; /* reserved */
if (msf) {
b[len++] = 0;
b[len++] = tmsf.min;
b[len++] = tmsf.sec;
b[len++] = tmsf.fr;
} else {
temp = MSFtoLBA(tmsf.min, tmsf.sec, tmsf.fr) - 150;
b[len++] = temp >> 24;
b[len++] = temp >> 16;
b[len++] = temp >> 8;
b[len++] = temp;
}
if (single)
break;
}
b[0] = (uint8_t)(((len-2) >> 8) & 0xff);
b[1] = (uint8_t)((len-2) & 0xff);
return len;
}
static int
image_readtoc_session(uint8_t id, unsigned char *b, int msf, int maxlen)
{
int number, len = 4;
TMSF tmsf;
unsigned char attr;
uint32_t temp;
if (!cdimg[id])
return 0;
cdimg[id]->GetAudioTrackInfo(1, number, tmsf, attr);
if (number == 0)
number = 1;
b[2] = b[3] = 1;
b[len++] = 0; /* reserved */
b[len++] = attr;
b[len++] = number; /* track number */
b[len++] = 0; /* reserved */
if (msf) {
b[len++] = 0;
b[len++] = tmsf.min;
b[len++] = tmsf.sec;
b[len++] = tmsf.fr;
} else {
temp = MSFtoLBA(tmsf.min, tmsf.sec, tmsf.fr) - 150; /* Do the - 150. */
b[len++] = temp >> 24;
b[len++] = temp >> 16;
b[len++] = temp >> 8;
b[len++] = temp;
}
if (maxlen < len)
return maxlen;
return len;
}
static int
image_readtoc_raw(uint8_t id, unsigned char *b, int maxlen)
{
int track, len = 4;
int first_track, last_track;
int number;
unsigned char attr;
TMSF tmsf;
if (!cdimg[id])
return 0;
cdimg[id]->GetAudioTracks(first_track, last_track, tmsf);
b[2] = first_track;
b[3] = last_track;
for (track = first_track; track <= last_track; track++) {
cdimg[id]->GetAudioTrackInfo(track, number, tmsf, attr);
b[len++] = track;
b[len++]= attr;
b[len++]=0;
b[len++]=0;
b[len++]=0;
b[len++]=0;
b[len++]=0;
b[len++]=0;
b[len++] = tmsf.min;
b[len++] = tmsf.sec;
b[len++] = tmsf.fr;
}
return len;
}
static int
image_status(uint8_t id)
{
cdrom_t *dev = cdrom[id];
if (!cdimg[id])
return CD_STATUS_EMPTY;
if (cdrom_image[id].image_is_iso)
return CD_STATUS_DATA_ONLY;
if (cdimg[id]->HasAudioTracks()) {
switch(dev->cd_state) {
case CD_PLAYING:
return CD_STATUS_PLAYING;
case CD_PAUSED:
return CD_STATUS_PAUSED;
case CD_STOPPED:
default:
return CD_STATUS_STOPPED;
}
}
return CD_STATUS_DATA_ONLY;
}
void
image_reset(UNUSED(uint8_t id))
{
return;
}
void
image_close(uint8_t id)
{
cdrom_t *dev = cdrom[id];
dev->cd_state = CD_STOPPED;
if (cdimg[id]) {
delete cdimg[id];
cdimg[id] = NULL;
}
}
int
image_open(uint8_t id, wchar_t *fn)
{
cdrom_t *dev = cdrom[id];
wcscpy(cdrom_image[id].image_path, fn);
if (! wcscasecmp(plat_get_extension(fn), L"ISO"))
cdrom_image[id].image_is_iso = 1;
else
cdrom_image[id].image_is_iso = 0;
cdimg[id] = new CDROM_Interface_Image();
memset(afn, 0, sizeof(afn));
wcstombs(afn, fn, sizeof(afn));
if (!cdimg[id]->SetDevice(afn, false)) {
image_close(id);
cdrom_set_null_handler(id);
cdrom_image_log("[f] image_open(): cdrom[%i]->handler = %08X\n", id, cdrom[id]->handler);
return 1;
}
dev->cd_state = CD_STOPPED;
dev->seek_pos = 0;
dev->cd_buflen = 0;
dev->cdrom_capacity = image_get_last_block(id) + 1;
cdrom[id]->handler = &image_cdrom;
return 0;
}
static void
image_exit(uint8_t id)
{
cdrom_t *dev = cdrom[id];
dev->handler_inited = 0;
}
/* TODO: Check for what data type a mixed CD is. */
static int image_media_type_id(uint8_t id)
{
if (image_size(id) > 405000)
return 65; /* DVD. */
else {
if (cdrom_image[id].image_is_iso)
return 1; /* Data CD. */
else
return 3; /* Mixed mode CD. */
}
}
CDROM image_cdrom =
{
image_ready,
image_medium_changed,
image_media_type_id,
image_audio_callback,
image_audio_stop,
image_readtoc,
image_readtoc_session,
image_readtoc_raw,
image_getcurrentsubchannel,
image_readsector_raw,
image_playaudio,
image_pause,
image_resume,
image_size,
image_status,
image_stop,
image_exit
};
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