1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
|
/******************************************************************
* CopyPolicy: GNU Public License 2 applies
* Copyright (C) 1998 Monty xiphmont@mit.edu
*
* Top-level interface module for cdrom drive access. SCSI, ATAPI, etc
* specific stuff are in other modules. Note that SCSI does use
* specialized ioctls; these appear in common_interface.c where the
* generic_scsi stuff is in scsi_interface.c.
*
******************************************************************/
#include "low_interface.h"
#include "common_interface.h"
#include "utils.h"
static void _clean_messages(cdrom_drive *d){
if(d){
if(d->messagebuf)free(d->messagebuf);
if(d->errorbuf)free(d->errorbuf);
d->messagebuf=NULL;
d->errorbuf=NULL;
}
}
/* doubles as "cdrom_drive_free()" */
int cdda_close(cdrom_drive *d){
if(d){
if(d->opened)
d->enable_cdda(d,0);
_clean_messages(d);
if(d->cdda_device_name)free(d->cdda_device_name);
if(d->ioctl_device_name)free(d->ioctl_device_name);
if(d->drive_model)free(d->drive_model);
if(d->cdda_fd!=-1)close(d->cdda_fd);
if(d->ioctl_fd!=-1 && d->ioctl_fd!=d->cdda_fd)close(d->ioctl_fd);
if(d->sg)free(d->sg);
free(d);
}
return(0);
}
/* finish initializing the drive! */
int cdda_open(cdrom_drive *d){
int ret;
if(d->opened)return(0);
switch(d->interface){
case GENERIC_SCSI:
if((ret=scsi_init_drive(d)))
return(ret);
break;
case COOKED_IOCTL:
if((ret=cooked_init_drive(d)))
return(ret);
break;
#ifdef CDDA_TEST
case TEST_INTERFACE:
if((ret=test_init_drive(d)))
return(ret);
break;
#endif
default:
cderror(d,"100: Interface not supported\n");
return(-100);
}
/* Check TOC, enable for CDDA */
/* Some drives happily return a TOC even if there is no disc... */
{
int i;
for(i=0;i<d->tracks;i++)
if(d->disc_toc[i].dwStartSector<0 ||
d->disc_toc[i+1].dwStartSector==0){
d->opened=0;
cderror(d,"009: CDROM reporting illegal table of contents\n");
return(-9);
}
}
if((ret=d->enable_cdda(d,1)))
return(ret);
/* d->select_speed(d,d->maxspeed); most drives are full speed by default */
if(d->bigendianp==-1)d->bigendianp=data_bigendianp(d);
return(0);
}
int cdda_speed_set(cdrom_drive *d, int speed)
{
return d->set_speed ? d->set_speed(d, speed) : 0;
}
long cdda_read(cdrom_drive *d, void *buffer, long beginsector, long sectors){
if(d->opened){
if(sectors>0){
sectors=d->read_audio(d,buffer,beginsector,sectors);
if(sectors!=-1){
/* byteswap? */
if(d->bigendianp==-1) /* not determined yet */
d->bigendianp=data_bigendianp(d);
if(d->bigendianp!=bigendianp()){
int i;
u_int16_t *p=(u_int16_t *)buffer;
long els=sectors*CD_FRAMESIZE_RAW/2;
for(i=0;i<els;i++)p[i]=swap16(p[i]);
}
}
}
return(sectors);
}
cderror(d,"400: Device not open\n");
return(-400);
}
void cdda_verbose_set(cdrom_drive *d,int err_action, int mes_action){
d->messagedest=mes_action;
d->errordest=err_action;
}
extern char *cdda_messages(cdrom_drive *d){
char *ret=d->messagebuf;
d->messagebuf=NULL;
return(ret);
}
extern char *cdda_errors(cdrom_drive *d){
char *ret=d->errorbuf;
d->errorbuf=NULL;
return(ret);
}
|
