Removed DOSBox OPL code, and made NukedOPL, the CD-ROM image code (incl. former cdrom_dosbox.cpp/h), and Raw Input mouse code C instead of C++, and fixed OPL2 emulation with NukedOPL.
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OBattler
295
src/cdrom/cdrom_image.c
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295
src/cdrom/cdrom_image.c
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/*
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* 86Box A hypervisor and IBM PC system emulator that specializes in
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* running old operating systems and software designed for IBM
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* PC systems and compatibles from 1981 through fairly recent
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* system designs based on the PCI bus.
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*
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* This file is part of the 86Box distribution.
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*
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* CD-ROM image support.
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*
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* Version: @(#)cdrom_image.c 1.0.11 2019/03/06
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*
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* Author: RichardG867,
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* Miran Grca, <mgrca8@gmail.com>
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* bit,
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*
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* Copyright 2015-2019 Richardg867.
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* Copyright 2015-2019 Miran Grca.
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* Copyright 2017-2019 bit.
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*/
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#define __USE_LARGEFILE64
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#define _LARGEFILE_SOURCE
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#define _LARGEFILE64_SOURCE
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#include <stdarg.h>
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#include <stdio.h>
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#include <stdint.h>
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#include <string.h>
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#include <stdlib.h>
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#include <wchar.h>
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#define HAVE_STDARG_H
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#include "../86box.h"
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#include "../config.h"
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#include "../plat.h"
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#include "../scsi/scsi_device.h"
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#include "cdrom_image_backend.h"
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#include "cdrom.h"
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#include "cdrom_image.h"
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#ifdef ENABLE_CDROM_IMAGE_LOG
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int cdrom_image_do_log = ENABLE_CDROM_IMAGE_LOG;
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void
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cdrom_image_log(const char *fmt, ...)
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{
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va_list ap;
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if (cdrom_image_do_log) {
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va_start(ap, fmt);
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pclog_ex(fmt, ap);
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va_end(ap);
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}
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}
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#else
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#define cdrom_image_log(fmt, ...)
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#endif
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/* 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:
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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
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of the audio while audio still plays. With an absolute conversion, the counter is fine. */
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#define MSFtoLBA(m,s,f) ((((m * 60) + s) * 75) + f)
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static void
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image_get_tracks(cdrom_t *dev, int *first, int *last)
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{
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cd_img_t *img = (cd_img_t *)dev->image;
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TMSF tmsf;
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cdi_get_audio_tracks(img, first, last, &tmsf);
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}
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static void
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image_get_track_info(cdrom_t *dev, uint32_t track, int end, track_info_t *ti)
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{
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cd_img_t *img = (cd_img_t *)dev->image;
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TMSF tmsf;
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cdi_get_audio_track_info(img, end, track, &ti->number, &tmsf, &ti->attr);
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ti->m = tmsf.min;
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ti->s = tmsf.sec;
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ti->f = tmsf.fr;
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}
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static void
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image_get_subchannel(cdrom_t *dev, uint32_t lba, subchannel_t *subc)
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{
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cd_img_t *img = (cd_img_t *)dev->image;
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TMSF rel_pos, abs_pos;
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cdi_get_audio_sub(img, lba, &subc->attr, &subc->track, &subc->index,
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&rel_pos, &abs_pos);
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subc->abs_m = abs_pos.min;
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subc->abs_s = abs_pos.sec;
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subc->abs_f = abs_pos.fr;
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subc->rel_m = rel_pos.min;
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subc->rel_s = rel_pos.sec;
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subc->rel_f = rel_pos.fr;
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}
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static int
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image_get_capacity(cdrom_t *dev)
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{
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cd_img_t *img = (cd_img_t *)dev->image;
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int first_track, last_track;
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int number, c;
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unsigned char attr;
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TMSF tmsf;
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uint32_t lb = 0;
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uint32_t address;
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if (!img)
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return 0;
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cdi_get_audio_tracks(img, &first_track, &last_track, &tmsf);
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for (c = 0; c <= last_track; c++) {
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cdi_get_audio_track_info(img, 0, c + 1, &number, &tmsf, &attr);
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address = MSFtoLBA(tmsf.min, tmsf.sec, tmsf.fr) - 150; /* Do the - 150 here as well. */
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if (address > lb)
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lb = address;
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}
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return lb;
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}
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static int
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image_is_track_audio(cdrom_t *dev, uint32_t pos, int ismsf)
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{
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cd_img_t *img = (cd_img_t *)dev->image;
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uint8_t attr;
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TMSF tmsf;
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int m, s, f;
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int number;
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if (!img || (dev->cd_status == CD_STATUS_DATA_ONLY))
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return 0;
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if (ismsf) {
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m = (pos >> 16) & 0xff;
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s = (pos >> 8) & 0xff;
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f = pos & 0xff;
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pos = MSFtoLBA(m, s, f) - 150;
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}
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/* GetTrack requires LBA. */
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cdi_get_audio_track_info(img, 0, cdi_get_track(img, pos), &number, &tmsf, &attr);
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return attr == AUDIO_TRACK;
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}
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static int
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image_sector_size(struct cdrom *dev, uint32_t lba)
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{
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cd_img_t *img = (cd_img_t *)dev->image;
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return cdi_get_sector_size(img, lba);
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}
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static int
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image_read_sector(struct cdrom *dev, int type, uint8_t *b, uint32_t lba)
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{
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cd_img_t *img = (cd_img_t *)dev->image;
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switch (type) {
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case CD_READ_DATA:
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return cdi_read_sector(img, b, 0, lba);
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case CD_READ_AUDIO:
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return cdi_read_sector(img, b, 1, lba);
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case CD_READ_RAW:
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if (cdi_get_sector_size(img, lba) == 2352)
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return cdi_read_sector(img, b, 1, lba);
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else
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return cdi_read_sector_sub(img, b, lba);
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default:
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cdrom_image_log("CD-ROM %i: Unknown CD read type\n", dev->id);
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return 0;
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}
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}
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static int
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image_track_type(cdrom_t *dev, uint32_t lba)
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{
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cd_img_t *img = (cd_img_t *)dev->image;
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if (img) {
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if (image_is_track_audio(dev, lba, 0))
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return CD_TRACK_AUDIO;
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else {
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if (cdi_is_mode2(img, lba))
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return CD_TRACK_MODE2 | cdi_get_mode2_form(img, lba);
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}
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}
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return 0;
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}
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static void
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image_exit(cdrom_t *dev)
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{
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cd_img_t *img = (cd_img_t *)dev->image;
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cdrom_image_log("CDROM: image_exit(%ls)\n", dev->image_path);
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dev->cd_status = CD_STATUS_EMPTY;
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if (img) {
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cdi_close(img);
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dev->image = NULL;
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}
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dev->ops = NULL;
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}
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static const cdrom_ops_t cdrom_image_ops = {
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image_get_tracks,
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image_get_track_info,
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image_get_subchannel,
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image_sector_size,
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image_read_sector,
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image_track_type,
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image_exit
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};
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static int
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image_open_abort(cdrom_t *dev)
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{
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cdrom_image_close(dev);
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dev->ops = NULL;
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dev->host_drive = 0;
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return 1;
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}
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int
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cdrom_image_open(cdrom_t *dev, const wchar_t *fn)
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{
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cd_img_t *img;
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wcscpy(dev->image_path, fn);
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/* Create new instance of the CDROM_Image class. */
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img = (cd_img_t *) malloc(sizeof(cd_img_t));
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/* This guarantees that if ops is not NULL, then
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neither is the image pointer. */
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if (!img)
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return image_open_abort(dev);
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memset(img, 0, sizeof(cd_img_t));
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dev->image = img;
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/* Open the image. */
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if (!cdi_set_device(img, fn))
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return image_open_abort(dev);
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/* All good, reset state. */
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if (! wcscasecmp(plat_get_extension((wchar_t *) fn), L"ISO"))
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dev->cd_status = CD_STATUS_DATA_ONLY;
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else
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dev->cd_status = CD_STATUS_STOPPED;
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dev->seek_pos = 0;
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dev->cd_buflen = 0;
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dev->cdrom_capacity = image_get_capacity(dev);
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cdrom_image_log("CD-ROM capacity: %i sectors (%i bytes)\n", dev->cdrom_capacity, dev->cdrom_capacity << 11);
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/* Attach this handler to the drive. */
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dev->ops = &cdrom_image_ops;
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return 0;
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}
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void
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cdrom_image_close(cdrom_t *dev)
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{
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cdrom_image_log("CDROM: image_close(%ls)\n", dev->image_path);
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if (dev && dev->ops && dev->ops->exit)
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dev->ops->exit(dev);
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}
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