Update MiNT CD-ROM driver
--HG-- extra : convert_revision : svn%3Ac70aab31-4412-0410-b14c-859654838e24/trunk%40728
This commit is contained in:
Patrice Mandin
parent
096219e44c
commit
343e317a59
1 changed files with 21 additions and 170 deletions
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@ -20,11 +20,6 @@
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slouken@libsdl.org
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*/
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#ifdef SAVE_RCSID
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static char rcsid =
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"@(#) $Id$";
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#endif
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/*
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Atari MetaDOS CD-ROM functions
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@ -43,17 +38,18 @@ static char rcsid =
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#include "SDL_cdrom.h"
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#include "SDL_syscdrom.h"
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/* Some ioctl() errno values which occur when the tray is empty */
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#ifndef ENOMEDIUM
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#define ENOMEDIUM ENOENT
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#endif
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#define ERRNO_TRAYEMPTY(errno) \
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((errno == EIO) || (errno == ENOENT) || \
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(errno == EINVAL) || (errno == ENOMEDIUM))
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/* The maximum number of CD-ROM drives we'll detect */
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#define MAX_DRIVES 32
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/* Type of CD-ROM drive */
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#define DRIVE_TYPE_NOCD -1
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#define DRIVE_TYPE_STANDARD 0
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#define DRIVE_TYPE_CDAR 1
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typedef struct {
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int type; /* Standard, or old CDAR-type CD drive ? */
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unsigned char device[3]; /* Physical device letter + ':' + '\0' */
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metaopen_t metaopen; /* Infos on opened drive */
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} metados_drive_t;
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@ -65,8 +61,6 @@ static const char *SDL_SYS_CDName(int drive);
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static int SDL_SYS_CDOpen(int drive);
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static void SDL_SYS_CDClose(SDL_CD *cdrom);
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static int SDL_SYS_CDioctl(int id, int command, void *arg);
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/* Commands using ioctl() */
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static int SDL_SYS_CDGetTOC(SDL_CD *cdrom);
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static CDstatus SDL_SYS_CDStatus(SDL_CD *cdrom, int *position);
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static int SDL_SYS_CDPlay(SDL_CD *cdrom, int start, int length);
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@ -75,16 +69,12 @@ static int SDL_SYS_CDResume(SDL_CD *cdrom);
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static int SDL_SYS_CDStop(SDL_CD *cdrom);
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static int SDL_SYS_CDEject(SDL_CD *cdrom);
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/* Commands using Meta*() CDAR functions */
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static int SDL_SYS_CD_BcdToBinary(int value);
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static int SDL_SYS_CDGetTOC_CDAR(SDL_CD *cdrom);
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static CDstatus SDL_SYS_CDStatus_CDAR(SDL_CD *cdrom, int *position);
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int SDL_SYS_CDInit(void)
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{
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metainit_t metainit={0,0,0,0};
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metaopen_t metaopen;
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int i, handle;
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struct cdrom_subchnl info;
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Metainit(&metainit);
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if (metainit.version == NULL) {
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@ -104,7 +94,6 @@ int SDL_SYS_CDInit(void)
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SDL_numcds = 0;
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for (i='A'; i<='Z'; i++) {
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metados_drives[SDL_numcds].type = DRIVE_TYPE_NOCD;
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metados_drives[SDL_numcds].device[0] = 0;
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metados_drives[SDL_numcds].device[1] = ':';
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metados_drives[SDL_numcds].device[2] = 0;
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@ -113,20 +102,10 @@ int SDL_SYS_CDInit(void)
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handle = Metaopen(i, &metaopen);
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if (handle == 0) {
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if ( (metaopen.name[0]=='C') && (metaopen.name[1]=='D') &&
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(metaopen.name[2]=='A') && (metaopen.name[3]=='R')) {
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/* Drive compatible with CDAR */
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metados_drives[SDL_numcds].type = DRIVE_TYPE_CDAR;
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info.cdsc_format = CDROM_MSF;
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if ( (Metaioctl(i, METADOS_IOCTL_MAGIC, CDROMSUBCHNL, &info) == 0) || ERRNO_TRAYEMPTY(errno) ) {
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metados_drives[SDL_numcds].device[0] = i;
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++SDL_numcds;
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} else {
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/* Check for a CD-ROM device */
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if ((Metastatus(i, NULL) & 0x7fff) >= 0) {
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/* Drive compatible with new ioctl functions */
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metados_drives[SDL_numcds].type = DRIVE_TYPE_STANDARD;
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metados_drives[SDL_numcds].device[0] = i;
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++SDL_numcds;
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}
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}
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Metaclose(i);
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@ -188,94 +167,12 @@ static int SDL_SYS_CDioctl(int id, int command, void *arg)
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return(retval);
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}
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static int SDL_SYS_CD_BcdToBinary(int value)
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{
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int tmp;
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tmp = (value>>4) & 0xf;
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return (tmp*10)+(value & 0xf);
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}
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static int SDL_SYS_CDGetTOC_CDAR(SDL_CD *cdrom)
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{
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int errorcode, i, minute, second, frame;
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metatocentry_t *toc_entries;
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metadiscinfo_t disc_info;
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/* First, read disc info */
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errorcode = Metadiscinfo(metados_drives[cdrom->id].device[0], &disc_info);
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if (errorcode<0) {
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#ifdef DEBUG_CDROM
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fprintf(stderr, "Can not read disc info\n");
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#endif
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return -1;
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}
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cdrom->numtracks = disc_info.last - disc_info.first + 1;
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/* Then read toc entries for tracks */
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toc_entries = (metatocentry_t *)malloc(100*sizeof(metatocentry_t));
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if (toc_entries == NULL) {
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#ifdef DEBUG_CDROM
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fprintf(stderr, "Can not allocate memory for TOC entries\n");
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#endif
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return -1;
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}
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errorcode = Metagettoc(metados_drives[cdrom->id].device[0], 0, toc_entries);
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if (errorcode<0) {
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#ifdef DEBUG_CDROM
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fprintf(stderr, "Can not read TOC\n");
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#endif
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free(toc_entries);
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return -1;
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}
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i=0;
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for (;;) {
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if ((toc_entries[i].track==0) && (toc_entries[i].minute==0) &&
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(toc_entries[i].second==0) && (toc_entries[i].frame==0)
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) {
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break;
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}
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if (toc_entries[i].track == CDROM_LEADOUT_CDAR) {
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cdrom->track[i].id = CDROM_LEADOUT;
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} else {
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cdrom->track[i].id = toc_entries[i].track;
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}
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if (disc_info.disctype == 0) {
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cdrom->track[i].type = SDL_AUDIO_TRACK;
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} else {
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cdrom->track[i].type = SDL_DATA_TRACK;
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}
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minute = SDL_SYS_CD_BcdToBinary(toc_entries[i].minute);
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second = SDL_SYS_CD_BcdToBinary(toc_entries[i].second);
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frame = SDL_SYS_CD_BcdToBinary(toc_entries[i].frame);
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cdrom->track[i].offset = MSF_TO_FRAMES(minute, second, frame);
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if ( i > 0 ) {
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cdrom->track[i-1].length = cdrom->track[i].offset - cdrom->track[i-1].offset;
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}
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++i;
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}
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free(toc_entries);
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return 0;
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}
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static int SDL_SYS_CDGetTOC(SDL_CD *cdrom)
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{
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int i,okay;
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struct cdrom_tochdr toc;
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struct cdrom_tocentry entry;
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/* CDAR compatible drive ? */
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if (metados_drives[cdrom->id].type == DRIVE_TYPE_CDAR) {
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return SDL_SYS_CDGetTOC_CDAR(cdrom);
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}
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/* Use standard ioctl() */
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if (SDL_SYS_CDioctl(cdrom->id, CDROMREADTOCHDR, &toc)<0) {
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return -1;
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@ -320,26 +217,19 @@ static int SDL_SYS_CDGetTOC(SDL_CD *cdrom)
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}
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/* Get CD-ROM status */
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static CDstatus SDL_SYS_CDStatus_CDAR(SDL_CD *cdrom, int *position)
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{
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return CD_ERROR;
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}
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static CDstatus SDL_SYS_CDStatus(SDL_CD *cdrom, int *position)
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{
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CDstatus status;
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struct cdrom_tochdr toc;
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struct cdrom_subchnl info;
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/* CDAR compatible drive ? */
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if (metados_drives[cdrom->id].type == DRIVE_TYPE_CDAR) {
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return SDL_SYS_CDStatus_CDAR(cdrom, position);
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}
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/* Standard ioctl */
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info.cdsc_format = CDROM_MSF;
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if ( SDL_SYS_CDioctl(cdrom->id, CDROMSUBCHNL, &info) < 0 ) {
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status = CD_TRAYEMPTY;
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if ( ERRNO_TRAYEMPTY(errno) ) {
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status = CD_TRAYEMPTY;
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} else {
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status = CD_ERROR;
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}
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} else {
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switch (info.cdsc_audiostatus) {
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case CDROM_AUDIO_INVALID:
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@ -384,30 +274,10 @@ static CDstatus SDL_SYS_CDStatus(SDL_CD *cdrom, int *position)
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}
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/* Start play */
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static int SDL_SYS_CDPlay_CDAR(SDL_CD *cdrom, int start, int length)
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{
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struct cdrom_msf playtime;
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FRAMES_TO_MSF(start,
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&playtime.cdmsf_min0, &playtime.cdmsf_sec0, &playtime.cdmsf_frame0);
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FRAMES_TO_MSF(start+length,
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&playtime.cdmsf_min1, &playtime.cdmsf_sec1, &playtime.cdmsf_frame1);
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return Metasetsongtime(metados_drives[cdrom->id].device[0], 0,
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(playtime.cdmsf_min0<<16)|(playtime.cdmsf_sec0<<8)|(playtime.cdmsf_frame0),
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(playtime.cdmsf_min1<<16)|(playtime.cdmsf_sec1<<8)|(playtime.cdmsf_frame1)
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);
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}
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static int SDL_SYS_CDPlay(SDL_CD *cdrom, int start, int length)
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{
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struct cdrom_msf playtime;
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/* CDAR compatible drive ? */
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if (metados_drives[cdrom->id].type == DRIVE_TYPE_CDAR) {
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return SDL_SYS_CDPlay_CDAR(cdrom, start, length);
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}
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FRAMES_TO_MSF(start,
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&playtime.cdmsf_min0, &playtime.cdmsf_sec0, &playtime.cdmsf_frame0);
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FRAMES_TO_MSF(start+length,
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@ -417,49 +287,30 @@ static int SDL_SYS_CDPlay(SDL_CD *cdrom, int start, int length)
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playtime.cdmsf_min0, playtime.cdmsf_sec0, playtime.cdmsf_frame0,
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playtime.cdmsf_min1, playtime.cdmsf_sec1, playtime.cdmsf_frame1);
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#endif
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return(SDL_SYS_CDioctl(cdrom->id, CDROMPLAYMSF, &playtime));
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return SDL_SYS_CDioctl(cdrom->id, CDROMPLAYMSF, &playtime);
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}
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/* Pause play */
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static int SDL_SYS_CDPause(SDL_CD *cdrom)
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{
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/* CDAR compatible drive ? */
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if (metados_drives[cdrom->id].type == DRIVE_TYPE_CDAR) {
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return -1;
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}
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return(SDL_SYS_CDioctl(cdrom->id, CDROMPAUSE, 0));
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return SDL_SYS_CDioctl(cdrom->id, CDROMPAUSE, 0);
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}
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/* Resume play */
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static int SDL_SYS_CDResume(SDL_CD *cdrom)
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{
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/* CDAR compatible drive ? */
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if (metados_drives[cdrom->id].type == DRIVE_TYPE_CDAR) {
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return -1;
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}
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return(SDL_SYS_CDioctl(cdrom->id, CDROMRESUME, 0));
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return SDL_SYS_CDioctl(cdrom->id, CDROMRESUME, 0);
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}
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/* Stop play */
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static int SDL_SYS_CDStop(SDL_CD *cdrom)
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{
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/* CDAR compatible drive ? */
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if (metados_drives[cdrom->id].type == DRIVE_TYPE_CDAR) {
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return Metastopaudio(metados_drives[cdrom->id].device[0]);
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}
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return(SDL_SYS_CDioctl(cdrom->id, CDROMSTOP, 0));
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return SDL_SYS_CDioctl(cdrom->id, CDROMSTOP, 0);
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}
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/* Eject the CD-ROM */
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static int SDL_SYS_CDEject(SDL_CD *cdrom)
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{
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/* CDAR compatible drive ? */
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if (metados_drives[cdrom->id].type == DRIVE_TYPE_CDAR) {
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return -1;
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}
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return(SDL_SYS_CDioctl(cdrom->id, CDROMEJECT, 0));
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return SDL_SYS_CDioctl(cdrom->id, CDROMEJECT, 0);
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}
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