279 lines
6.8 KiB
C
279 lines
6.8 KiB
C
/*
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$Id: cooked_interface.c,v 1.10 2005/01/15 02:23:04 rocky Exp $
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Copyright (C) 2004, 2005 Rocky Bernstein <rocky@panix.com>
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Original interface.c Copyright (C) 1994-1997
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Eissfeldt heiko@colossus.escape.de
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Current blenderization Copyright (C) 1998-1999 Monty xiphmont@mit.edu
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Copyright (C) 1998 Monty xiphmont@mit.edu
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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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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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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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/******************************************************************
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*
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* CDROM code specific to the cooked ioctl interface
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*
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******************************************************************/
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#include "common_interface.h"
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#include "low_interface.h"
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#include "utils.h"
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/*! reads TOC via libcdio and returns the number of tracks in the disc.
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0 is returned if there was an error.
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*/
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static int
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cooked_readtoc (cdrom_drive_t *d)
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{
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int i;
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track_t i_track;
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/* Save TOC Entries */
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d->tracks = cdio_get_num_tracks(d->p_cdio) ;
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if (CDIO_INVALID_TRACK == d->tracks) return 0;
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i_track = cdio_get_first_track_num(d->p_cdio);
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for ( i=0; i < d->tracks; i++) {
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d->disc_toc[i].bTrack = i_track;
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d->disc_toc[i].dwStartSector = cdio_get_track_lsn(d->p_cdio, i_track);
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i_track++;
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}
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d->disc_toc[i].bTrack = i_track;
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d->disc_toc[i].dwStartSector = cdio_get_track_lsn(d->p_cdio,
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CDIO_CDROM_LEADOUT_TRACK);
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d->cd_extra=FixupTOC(d, i_track);
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return --i_track; /* without lead-out */
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}
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/* Set operating speed */
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static int
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cooked_setspeed(cdrom_drive_t *d, int speed)
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{
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#if SET_SPEED_FIXED
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if(d->ioctl_fd!=-1)
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return ioctl(d->ioctl_fd, CDROM_SELECT_SPEED, speed);
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else
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#endif
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return 0;
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}
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/* read 'SectorBurst' adjacent sectors of audio sectors
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* to Buffer '*p' beginning at sector 'lSector'
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*/
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static long int
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cooked_read (cdrom_drive_t *d, void *p, lsn_t begin, long sectors)
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{
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int retry_count,err;
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char *buffer=(char *)p;
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/* read d->nsectors at a time, max. */
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sectors=( sectors > d->nsectors && d->nsectors > 0 ? d->nsectors : sectors);
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retry_count=0;
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do {
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err = cdio_read_audio_sectors( d->p_cdio, buffer, begin, sectors);
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if ( 0 != err ) {
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if (!d->error_retry) return -7;
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if (sectors==1) {
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/* *Could* be I/O or media error. I think. If we're at
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30 retries, we better skip this unhappy little
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sector. */
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if (retry_count>MAX_RETRIES-1) {
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char b[256];
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snprintf(b, sizeof(b),
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"010: Unable to access sector %ld: skipping...\n",
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(long int) begin);
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cderror(d, b);
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return -10;
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}
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break;
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}
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if(retry_count>4)
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if(sectors>1)
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sectors=sectors*3/4;
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retry_count++;
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if (retry_count>MAX_RETRIES) {
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cderror(d,"007: Unknown, unrecoverable error reading data\n");
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return(-7);
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}
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} else
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break;
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} while (err);
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return(sectors);
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}
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/* hook */
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static int Dummy (cdrom_drive_t *d,int Switch)
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{
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return(0);
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}
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static int
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verify_read_command(cdrom_drive_t *d)
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{
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int i;
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int16_t *buff=malloc(CDIO_CD_FRAMESIZE_RAW);
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int audioflag=0;
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cdmessage(d,"Verifying drive can read CDDA...\n");
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d->enable_cdda(d,1);
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for(i=1;i<=d->tracks;i++){
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if(cdda_track_audiop(d,i)==1){
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long firstsector=cdda_track_firstsector(d,i);
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long lastsector=cdda_track_lastsector(d,i);
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long sector=(firstsector+lastsector)>>1;
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audioflag=1;
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if(d->read_audio(d,buff,sector,1)>0){
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cdmessage(d,"\tExpected command set reads OK.\n");
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d->enable_cdda(d,0);
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free(buff);
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return(0);
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}
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}
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}
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d->enable_cdda(d,0);
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if(!audioflag){
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cdmessage(d,"\tCould not find any audio tracks on this disk.\n");
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return(-403);
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}
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cdmessage(d,"\n\tUnable to read any data; "
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"drive probably not CDDA capable.\n");
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cderror(d,"006: Could not read any data from drive\n");
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free(buff);
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return(-6);
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}
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#include "drive_exceptions.h"
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#ifdef HAVE_LINUX_MAJOR_H
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static void
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check_exceptions(cdrom_drive_t *d, const exception_t *list)
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{
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int i=0;
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while(list[i].model){
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if(!strncmp(list[i].model,d->drive_model,strlen(list[i].model))){
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if(list[i].bigendianp!=-1)d->bigendianp=list[i].bigendianp;
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return;
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}
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i++;
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}
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}
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#endif /* HAVE_LINUX_MAJOR_H */
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/* set function pointers to use the ioctl routines */
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int
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cooked_init_drive (cdrom_drive_t *d){
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int ret;
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#if HAVE_LINUX_MAJOR_H
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switch(d->drive_type){
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case MATSUSHITA_CDROM_MAJOR: /* sbpcd 1 */
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case MATSUSHITA_CDROM2_MAJOR: /* sbpcd 2 */
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case MATSUSHITA_CDROM3_MAJOR: /* sbpcd 3 */
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case MATSUSHITA_CDROM4_MAJOR: /* sbpcd 4 */
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/* don't make the buffer too big; this sucker don't preempt */
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cdmessage(d,"Attempting to set sbpcd buffer size...\n");
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d->nsectors=8;
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#if BUFSIZE_DETERMINATION_FIXED
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while(1){
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/* this ioctl returns zero on error; exactly wrong, but that's
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what it does. */
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if (ioctl(d->ioctl_fd, CDROMAUDIOBUFSIZ, d->nsectors)==0) {
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d->nsectors>>=1;
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if(d->nsectors==0){
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char buffer[256];
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d->nsectors=8;
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sprintf(buffer,"\tTrouble setting buffer size. Defaulting to %d sectors.\n",
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d->nsectors);
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cdmessage(d,buffer);
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break; /* Oh, well. Try to read anyway.*/
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}
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} else {
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char buffer[256];
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sprintf(buffer,"\tSetting read block size at %d sectors (%ld bytes).\n",
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d->nsectors,(long)d->nsectors*CDIO_CD_FRAMESIZE_RAW);
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cdmessage(d,buffer);
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break;
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}
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}
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#endif /* BUFSIZE_DETERMINATION_FIXED */
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break;
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case IDE0_MAJOR:
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case IDE1_MAJOR:
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case IDE2_MAJOR:
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case IDE3_MAJOR:
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d->nsectors=8; /* it's a define in the linux kernel; we have no
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way of determining other than this guess tho */
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d->bigendianp=0;
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d->is_atapi=1;
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check_exceptions(d, atapi_list);
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break;
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default:
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d->nsectors=25; /* The max for SCSI MMC2 */
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}
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#else
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{
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char buffer[256];
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d->nsectors = 8;
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sprintf(buffer,"\tSetting read block size at %d sectors (%ld bytes).\n",
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d->nsectors,(long)d->nsectors*CDIO_CD_FRAMESIZE_RAW);
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cdmessage(d,buffer);
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}
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#endif /*HAVE_LINUX_MAJOR_H*/
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d->enable_cdda = Dummy;
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d->read_audio = cooked_read;
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d->set_speed = cooked_setspeed;
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d->read_toc = cooked_readtoc;
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ret=d->tracks=d->read_toc(d);
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if(d->tracks<1)
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return(ret);
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d->opened=1;
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if((ret=verify_read_command(d)))return(ret);
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d->error_retry=1;
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return(0);
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}
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