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
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
|
//=================== VideoCD ==========================
#if defined(linux) || defined(sun) || defined(__bsdi__)
#if defined(linux)
#include <linux/cdrom.h>
#elif defined(sun)
#include <sys/cdio.h>
static int sun_vcd_read(int, int*);
#elif defined(__bsdi__)
#include <dvd.h>
#endif
static struct cdrom_tocentry vcd_entry;
static inline void vcd_set_msf(unsigned int sect){
vcd_entry.cdte_addr.msf.frame=sect%75;
sect=sect/75;
vcd_entry.cdte_addr.msf.second=sect%60;
sect=sect/60;
vcd_entry.cdte_addr.msf.minute=sect;
}
static inline unsigned int vcd_get_msf(){
return vcd_entry.cdte_addr.msf.frame +
(vcd_entry.cdte_addr.msf.second+
vcd_entry.cdte_addr.msf.minute*60)*75;
}
int vcd_seek_to_track(int fd,int track){
vcd_entry.cdte_format = CDROM_MSF;
vcd_entry.cdte_track = track;
if (ioctl(fd, CDROMREADTOCENTRY, &vcd_entry)) {
perror("ioctl dif1");
return -1;
}
return VCD_SECTOR_DATA*vcd_get_msf();
}
int vcd_get_track_end(int fd,int track){
struct cdrom_tochdr tochdr;
if (ioctl(fd,CDROMREADTOCHDR,&tochdr)==-1)
{ perror("read CDROM toc header: "); return -1; }
vcd_entry.cdte_format = CDROM_MSF;
vcd_entry.cdte_track = track<tochdr.cdth_trk1?(track+1):CDROM_LEADOUT;
if (ioctl(fd, CDROMREADTOCENTRY, &vcd_entry)) {
perror("ioctl dif2");
return -1;
}
return VCD_SECTOR_DATA*vcd_get_msf();
}
void vcd_read_toc(int fd){
struct cdrom_tochdr tochdr;
int i;
if (ioctl(fd,CDROMREADTOCHDR,&tochdr)==-1)
{ perror("read CDROM toc header: "); return; }
for (i=tochdr.cdth_trk0 ; i<=tochdr.cdth_trk1 ; i++){
struct cdrom_tocentry tocentry;
tocentry.cdte_track = i;
tocentry.cdte_format = CDROM_MSF;
if (ioctl(fd,CDROMREADTOCENTRY,&tocentry)==-1)
{ perror("read CDROM toc entry: "); return; }
mp_msg(MSGT_OPEN,MSGL_INFO,"track %02d: adr=%d ctrl=%d format=%d %02d:%02d:%02d mode: %d\n",
(int)tocentry.cdte_track,
(int)tocentry.cdte_adr,
(int)tocentry.cdte_ctrl,
(int)tocentry.cdte_format,
(int)tocentry.cdte_addr.msf.minute,
(int)tocentry.cdte_addr.msf.second,
(int)tocentry.cdte_addr.msf.frame,
(int)tocentry.cdte_datamode
);
}
}
static char vcd_buf[VCD_SECTOR_SIZE];
static int vcd_read(int fd,char *mem){
#if defined(linux) || defined(__bsdi__)
memcpy(vcd_buf,&vcd_entry.cdte_addr.msf,sizeof(struct cdrom_msf));
if(ioctl(fd,CDROMREADRAW,vcd_buf)==-1) return 0; // EOF?
memcpy(mem,&vcd_buf[VCD_SECTOR_OFFS],VCD_SECTOR_DATA);
#elif defined(sun)
{
int offset;
if (sun_vcd_read(fd, &offset) <= 0) return 0;
memcpy(mem,&vcd_buf[offset],VCD_SECTOR_DATA);
}
#endif
vcd_entry.cdte_addr.msf.frame++;
if (vcd_entry.cdte_addr.msf.frame==75){
vcd_entry.cdte_addr.msf.frame=0;
vcd_entry.cdte_addr.msf.second++;
if (vcd_entry.cdte_addr.msf.second==60){
vcd_entry.cdte_addr.msf.second=0;
vcd_entry.cdte_addr.msf.minute++;
}
}
return VCD_SECTOR_DATA;
}
#ifdef sun
#include <sys/scsi/generic/commands.h>
#include <sys/scsi/impl/uscsi.h>
#define SUN_XAREAD 1 /*fails on atapi drives*/
#define SUN_MODE2READ 2 /*fails on atapi drives*/
#define SUN_SCSIREAD 3
#define SUN_VCDREAD SUN_SCSIREAD
static int sun_vcd_read(int fd, int *offset)
{
#if SUN_VCDREAD == SUN_XAREAD
struct cdrom_cdxa cdxa;
cdxa.cdxa_addr = vcd_get_msf();
cdxa.cdxa_length = 1;
cdxa.cdxa_data = vcd_buf;
cdxa.cdxa_format = CDROM_XA_SECTOR_DATA;
if(ioctl(fd,CDROMCDXA,&cdxa)==-1) {
perror("CDROMCDXA");
return 0;
}
*offset = 0;
#elif SUN_VCDREAD == SUN_MODE2READ
struct cdrom_read cdread;
cdread.cdread_lba = 4*vcd_get_msf();
cdread.cdread_bufaddr = vcd_buf;
cdread.cdread_buflen = 2336;
if(ioctl(fd,CDROMREADMODE2,&cdread)==-1) {
perror("CDROMREADMODE2");
return 0;
}
*offset = 8;
#elif SUN_VCDREAD == SUN_SCSIREAD
struct uscsi_cmd sc;
union scsi_cdb cdb;
int lba = vcd_get_msf();
int blocks = 1;
int sector_type;
int sync, header_code, user_data, edc_ecc, error_field;
int sub_channel;
/* sector_type = 3; *//* mode2 */
sector_type = 5; /* mode2/form2 */
sync = 0;
header_code = 0;
user_data = 1;
edc_ecc = 0;
error_field = 0;
sub_channel = 0;
memset(&cdb, 0, sizeof(cdb));
memset(&sc, 0, sizeof(sc));
cdb.scc_cmd = 0xBE;
cdb.cdb_opaque[1] = (sector_type) << 2;
cdb.cdb_opaque[2] = (lba >> 24) & 0xff;
cdb.cdb_opaque[3] = (lba >> 16) & 0xff;
cdb.cdb_opaque[4] = (lba >> 8) & 0xff;
cdb.cdb_opaque[5] = lba & 0xff;
cdb.cdb_opaque[6] = (blocks >> 16) & 0xff;
cdb.cdb_opaque[7] = (blocks >> 8) & 0xff;
cdb.cdb_opaque[8] = blocks & 0xff;
cdb.cdb_opaque[9] = (sync << 7) |
(header_code << 5) |
(user_data << 4) |
(edc_ecc << 3) |
(error_field << 1);
cdb.cdb_opaque[10] = sub_channel;
sc.uscsi_cdb = (caddr_t)&cdb;
sc.uscsi_cdblen = 12;
sc.uscsi_bufaddr = vcd_buf;
sc.uscsi_buflen = 2336;
sc.uscsi_flags = USCSI_ISOLATE | USCSI_READ;
sc.uscsi_timeout = 20;
if (ioctl(fd, USCSICMD, &sc)) {
perror("USCSICMD: READ CD");
return -1;
}
if (sc.uscsi_status) {
fprintf(stderr, "scsi command failed with status %d\n", sc.uscsi_status);
return -1;
}
*offset = 0;
return 1;
#else
#error SUN_VCDREAD
#endif
}
#endif /*sun*/
//================== VCD CACHE =======================
#ifdef VCD_CACHE
static int vcd_cache_size=0;
static char *vcd_cache_data=NULL;
static int *vcd_cache_sectors=NULL;
static int vcd_cache_index=0; // index to first free (or oldest) cache sector
static int vcd_cache_current=-1;
void vcd_cache_init(int s){
vcd_cache_size=s;
vcd_cache_sectors=malloc(s*sizeof(int));
vcd_cache_data=malloc(s*VCD_SECTOR_SIZE);
memset(vcd_cache_sectors,255,s*sizeof(int));
}
static inline void vcd_cache_seek(int sect){
vcd_cache_current=sect;
}
int vcd_cache_read(int fd,char* mem){
int i;
char* vcd_buf;
for(i=0;i<vcd_cache_size;i++)
if(vcd_cache_sectors[i]==vcd_cache_current){
// found in the cache! :)
vcd_buf=&vcd_cache_data[i*VCD_SECTOR_SIZE];
++vcd_cache_current;
memcpy(mem,&vcd_buf[VCD_SECTOR_OFFS],VCD_SECTOR_DATA);
return VCD_SECTOR_DATA;
}
// NEW cache entry:
vcd_buf=&vcd_cache_data[vcd_cache_index*VCD_SECTOR_SIZE];
vcd_cache_sectors[vcd_cache_index]=vcd_cache_current;
++vcd_cache_index;if(vcd_cache_index>=vcd_cache_size)vcd_cache_index=0;
// read data!
vcd_set_msf(vcd_cache_current);
#if defined(linux) || defined(__bsdi__)
memcpy(vcd_buf,&vcd_entry.cdte_addr.msf,sizeof(struct cdrom_msf));
if(ioctl(fd,CDROMREADRAW,vcd_buf)==-1) return 0; // EOF?
memcpy(mem,&vcd_buf[VCD_SECTOR_OFFS],VCD_SECTOR_DATA);
#elif defined(sun)
{
int offset;
if (sun_vcd_read(fd, &offset) <= 0) return 0;
memcpy(mem,&vcd_buf[offset],VCD_SECTOR_DATA);
}
#endif
++vcd_cache_current;
return VCD_SECTOR_DATA;
}
#endif
#else /* linux || sun */
int vcd_seek_to_track(int fd,int track)
{
return -1;
}
int vcd_get_track_end(int fd,int track)
{
return -1;
}
void vcd_read_toc(int fd)
{
}
static char vcd_buf[VCD_SECTOR_SIZE];
static int vcd_read(int fd,char *mem)
{
return -1;
}
#endif /* !linux && !sun */
|
