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
|
/*
Copyright (C) 2004-2006, 2008-2009, 2012-2013
Rocky Bernstein <rocky@gnu.org>
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
/* Internal routines for CD I/O drivers. */
#ifndef CDIO_DRIVER_GENERIC_H_
#define CDIO_DRIVER_GENERIC_H_
#if defined(HAVE_CONFIG_H) && !defined(LIBCDIO_CONFIG_H)
# include "config.h"
#endif
#include <cdio/cdio.h>
#include <cdio/cdtext.h>
#include <cdio/iso9660.h>
#ifdef HAVE_STDBOOL_H
# include <stdbool.h>
#endif
#ifdef __cplusplus
extern "C" {
#endif /* __cplusplus */
/*!
Things common to private device structures. Even though not all
devices may have some of these fields, by listing common ones
we facilitate writing generic routines and even cut-and-paste
code.
*/
typedef struct {
char *source_name; /**< Name used in open. */
bool init; /**< True if structure has been initialized */
bool toc_init; /**< True if TOC read in */
bool b_cdtext_error; /**< True if trouble reading CD-Text */
int ioctls_debugged; /**< for debugging */
/* Only one of data_source or fd is used; fd is for CD-ROM
devices and the data_source for stream reading (bincue, nrg, toc,
network).
*/
CdioDataSource_t *data_source;
int fd; /**< File descriptor of device */
track_t i_first_track; /**< The starting track number. */
track_t i_tracks; /**< The number of tracks. */
uint8_t u_joliet_level; /**< 0 = no Joliet extensions.
1-3: Joliet level. */
iso9660_pvd_t pvd;
iso9660_svd_t svd;
CdIo_t *cdio; /**< a way to call general cdio routines. */
cdtext_t *cdtext; /**< CD-Text for disc. */
track_flags_t track_flags[CDIO_CD_MAX_TRACKS+1];
/* Memorized sense reply of the most recent SCSI command.
Recorded by driver implementations of cdio_funcs_t.run_mmc_cmd().
Read by API function mmc_get_cmd_scsi_sense().
*/
unsigned char scsi_mmc_sense[263]; /* See SPC-3 4.5.3 : 252 bytes legal
but 263 bytes possible */
int scsi_mmc_sense_valid; /* Number of valid sense bytes */
/* Memorized eventual system specific SCSI address tuple text.
Empty text means that there is no such text defined for the drive.
NULL means that the driver does not support "scsi-tuple".
To be read by cdio_get_arg("scsi-tuple").
System specific suffixes to the key may demand and eventually
guarantee a further specified format.
E.g. "scsi-tuple-linux" guarantees either "Bus,Host,Channel,Target,Lun",
or empty text, or NULL. No other forms.
*/
char *scsi_tuple;
} generic_img_private_t;
/*!
Bogus eject media when there is no ejectable media, e.g. a disk image
We always return 2. Should we also free resources?
*/
driver_return_code_t cdio_generic_unimplemented_eject_media (void *p_env);
/*!
Set the blocksize for subsequent reads.
@return -2 since it's not implemented.
*/
driver_return_code_t
cdio_generic_unimplemented_set_blocksize (void *p_user_data,
uint16_t i_blocksize);
/*!
Set the drive speed.
@return -2 since it's not implemented.
*/
driver_return_code_t cdio_generic_unimplemented_set_speed (void *p_user_data,
int i_speed);
/*!
Release and free resources associated with cd.
*/
void cdio_generic_free (void *p_env);
/*!
Initialize CD device.
*/
bool cdio_generic_init (void *p_env, int open_mode);
/*!
Reads into buf the next size bytes.
Returns -1 on error.
Is in fact libc's read().
*/
off_t cdio_generic_lseek (void *p_env, off_t offset, int whence);
/*!
Reads into buf the next size bytes.
Returns -1 on error.
Is in fact libc's read().
*/
ssize_t cdio_generic_read (void *p_env, void *p_buf, size_t size);
/*!
Reads a single form1 sector from cd device into data starting
from lsn. Returns 0 if no error.
*/
int cdio_generic_read_form1_sector (void * user_data, void *data,
lsn_t lsn);
/*!
Release and free resources associated with stream or disk image.
*/
void cdio_generic_stdio_free (void *env);
/*!
Return true if source_name could be a device containing a CD-ROM on
Win32
*/
bool cdio_is_device_win32(const char *source_name);
/*!
Return true if source_name could be a device containing a CD-ROM on
OS/2
*/
bool cdio_is_device_os2(const char *source_name);
/*!
Return true if source_name could be a device containing a CD-ROM on
most Unix servers with block and character devices.
*/
bool cdio_is_device_generic(const char *source_name);
/*!
Like above, but don't give a warning device doesn't exist.
*/
bool cdio_is_device_quiet_generic(const char *source_name);
/*!
Get cdtext information for a CdIo object .
@param obj the CD object that may contain CD-TEXT information.
@return the CD-TEXT object or NULL if obj is NULL
or CD-TEXT information does not exist.
*/
cdtext_t *get_cdtext_generic (void *p_user_data);
/*!
Return the number of of the first track.
CDIO_INVALID_TRACK is returned on error.
*/
track_t get_first_track_num_generic(void *p_user_data);
/*!
Return the number of tracks in the current medium.
*/
track_t get_num_tracks_generic(void *p_user_data);
/*!
Get disc type associated with cd object.
*/
discmode_t get_discmode_generic (void *p_user_data );
/*!
Same as above but only handles CD cases
*/
discmode_t get_discmode_cd_generic (void *p_user_data );
/*! Return number of channels in track: 2 or 4; -2 if not
implemented or -1 for error.
Not meaningful if track is not an audio track.
*/
int get_track_channels_generic(const void *p_user_data, track_t i_track);
/*! Return 1 if copy is permitted on the track, 0 if not, or -1 for error.
Is this meaningful if not an audio track?
*/
track_flag_t get_track_copy_permit_generic(void *p_user_data,
track_t i_track);
/*! Return 1 if track has pre-emphasis, 0 if not, or -1 for error.
Is this meaningful if not an audio track?
pre-emphasis is a non linear frequency response.
*/
track_flag_t get_track_preemphasis_generic(const void *p_user_data,
track_t i_track);
/*!
Read cdtext information for a CdIo object .
return true on success, false on error or CD-Text information does
not exist.
*/
uint8_t * read_cdtext_generic (void *p_env);
void set_track_flags(track_flags_t *p_track_flag, uint8_t flag);
/*! Read mode 1 or mode2 sectors (using cooked mode). */
driver_return_code_t read_data_sectors_generic (void *p_user_data,
void *p_buf, lsn_t i_lsn,
uint16_t i_blocksize,
uint32_t i_blocks);
#ifdef __cplusplus
}
#endif /* __cplusplus */
#endif /* CDIO_DRIVER_GENERIC_H_ */
/*
* Local variables:
* c-file-style: "gnu"
* tab-width: 8
* indent-tabs-mode: nil
* End:
*/
|
