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
|
#ifndef __USBAUDIO_H
#define __USBAUDIO_H
/*
* (Tentative) USB Audio Driver for ALSA
*
* Copyright (c) 2002 by Takashi Iwai <tiwai@suse.de>
*
*
* 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 2 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, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
/*
*/
#define USB_SUBCLASS_AUDIO_CONTROL 0x01
#define USB_SUBCLASS_AUDIO_STREAMING 0x02
#define USB_SUBCLASS_MIDI_STREAMING 0x03
#define USB_SUBCLASS_VENDOR_SPEC 0xff
#define CS_AUDIO_UNDEFINED 0x20
#define CS_AUDIO_DEVICE 0x21
#define CS_AUDIO_CONFIGURATION 0x22
#define CS_AUDIO_STRING 0x23
#define CS_AUDIO_INTERFACE 0x24
#define CS_AUDIO_ENDPOINT 0x25
#define HEADER 0x01
#define INPUT_TERMINAL 0x02
#define OUTPUT_TERMINAL 0x03
#define MIXER_UNIT 0x04
#define SELECTOR_UNIT 0x05
#define FEATURE_UNIT 0x06
#define PROCESSING_UNIT 0x07
#define EXTENSION_UNIT 0x08
#define AS_GENERAL 0x01
#define FORMAT_TYPE 0x02
#define FORMAT_SPECIFIC 0x03
#define EP_GENERAL 0x01
#define MS_GENERAL 0x01
#define MIDI_IN_JACK 0x02
#define MIDI_OUT_JACK 0x03
/* endpoint attributes */
#define EP_ATTR_MASK 0x0c
#define EP_ATTR_ASYNC 0x04
#define EP_ATTR_ADAPTIVE 0x08
#define EP_ATTR_SYNC 0x0c
/* cs endpoint attributes */
#define EP_CS_ATTR_SAMPLE_RATE 0x01
#define EP_CS_ATTR_PITCH_CONTROL 0x02
#define EP_CS_ATTR_FILL_MAX 0x80
/* Audio Class specific Request Codes */
#define SET_CUR 0x01
#define GET_CUR 0x81
#define SET_MIN 0x02
#define GET_MIN 0x82
#define SET_MAX 0x03
#define GET_MAX 0x83
#define SET_RES 0x04
#define GET_RES 0x84
#define SET_MEM 0x05
#define GET_MEM 0x85
#define GET_STAT 0xff
/* Terminal Control Selectors */
#define COPY_PROTECT_CONTROL 0x01
/* Endpoint Control Selectors */
#define SAMPLING_FREQ_CONTROL 0x01
#define PITCH_CONTROL 0x02
/* Format Types */
#define USB_FORMAT_TYPE_I 0x01
#define USB_FORMAT_TYPE_II 0x02
#define USB_FORMAT_TYPE_III 0x03
/* type I */
#define USB_AUDIO_FORMAT_PCM 0x01
#define USB_AUDIO_FORMAT_PCM8 0x02
#define USB_AUDIO_FORMAT_IEEE_FLOAT 0x03
#define USB_AUDIO_FORMAT_ALAW 0x04
#define USB_AUDIO_FORMAT_MU_LAW 0x05
/* type II */
#define USB_AUDIO_FORMAT_MPEG 0x1001
#define USB_AUDIO_FORMAT_AC3 0x1002
/* type III */
#define USB_AUDIO_FORMAT_IEC1937_AC3 0x2001
#define USB_AUDIO_FORMAT_IEC1937_MPEG1_LAYER1 0x2002
#define USB_AUDIO_FORMAT_IEC1937_MPEG2_NOEXT 0x2003
#define USB_AUDIO_FORMAT_IEC1937_MPEG2_EXT 0x2004
#define USB_AUDIO_FORMAT_IEC1937_MPEG2_LAYER1_LS 0x2005
#define USB_AUDIO_FORMAT_IEC1937_MPEG2_LAYER23_LS 0x2006
/* maximum number of endpoints per interface */
#define MIDI_MAX_ENDPOINTS 2
/* handling of USB vendor/product ID pairs as 32-bit numbers */
#define USB_ID(vendor, product) (((vendor) << 16) | (product))
#define USB_ID_VENDOR(id) ((id) >> 16)
#define USB_ID_PRODUCT(id) ((u16)(id))
/*
*/
typedef struct snd_usb_audio snd_usb_audio_t;
struct snd_usb_audio {
int index;
struct usb_device *dev;
snd_card_t *card;
u32 usb_id;
int shutdown;
int num_interfaces;
struct list_head pcm_list; /* list of pcm streams */
int pcm_devs;
struct list_head midi_list; /* list of midi interfaces */
int next_midi_device;
struct list_head mixer_list; /* list of mixer interfaces */
};
/*
* Information about devices with broken descriptors
*/
/* special values for .ifnum */
#define QUIRK_NO_INTERFACE -2
#define QUIRK_ANY_INTERFACE -1
/* quirk type */
#define QUIRK_MIDI_FIXED_ENDPOINT 0
#define QUIRK_MIDI_YAMAHA 1
#define QUIRK_MIDI_MIDIMAN 2
#define QUIRK_COMPOSITE 3
#define QUIRK_AUDIO_FIXED_ENDPOINT 4
#define QUIRK_AUDIO_STANDARD_INTERFACE 5
#define QUIRK_MIDI_STANDARD_INTERFACE 6
#define QUIRK_AUDIO_EDIROL_UA700_UA25 7
#define QUIRK_AUDIO_EDIROL_UA1000 8
#define QUIRK_IGNORE_INTERFACE 9
#define QUIRK_MIDI_NOVATION 10
#define QUIRK_MIDI_MOTU 11
#define QUIRK_MIDI_EMAGIC 12
typedef struct snd_usb_audio_quirk snd_usb_audio_quirk_t;
typedef struct snd_usb_midi_endpoint_info snd_usb_midi_endpoint_info_t;
struct snd_usb_audio_quirk {
const char *vendor_name;
const char *product_name;
int16_t ifnum;
int16_t type;
const void *data;
};
/* data for QUIRK_MIDI_FIXED_ENDPOINT */
struct snd_usb_midi_endpoint_info {
int8_t out_ep; /* ep number, 0 autodetect */
uint8_t out_interval; /* interval for interrupt endpoints */
int8_t in_ep;
uint8_t in_interval;
uint16_t out_cables; /* bitmask */
uint16_t in_cables; /* bitmask */
};
/* for QUIRK_MIDI_YAMAHA, data is NULL */
/* for QUIRK_MIDI_MIDIMAN, data points to a snd_usb_midi_endpoint_info
* structure (out_cables and in_cables only) */
/* for QUIRK_COMPOSITE, data points to an array of snd_usb_audio_quirk
* structures, terminated with .ifnum = -1 */
/* for QUIRK_AUDIO_FIXED_ENDPOINT, data points to an audioformat structure */
/* for QUIRK_AUDIO/MIDI_STANDARD_INTERFACE, data is NULL */
/* for QUIRK_AUDIO_EDIROL_UA700_UA25/UA1000, data is NULL */
/* for QUIRK_IGNORE_INTERFACE, data is NULL */
/* for QUIRK_MIDI_NOVATION and _MOTU, data is NULL */
/* for QUIRK_MIDI_EMAGIC, data points to a snd_usb_midi_endpoint_info
* structure (out_cables and in_cables only) */
/*
*/
#define combine_word(s) ((*s) | ((unsigned int)(s)[1] << 8))
#define combine_triple(s) (combine_word(s) | ((unsigned int)(s)[2] << 16))
#define combine_quad(s) (combine_triple(s) | ((unsigned int)(s)[3] << 24))
unsigned int snd_usb_combine_bytes(unsigned char *bytes, int size);
void *snd_usb_find_desc(void *descstart, int desclen, void *after, u8 dtype);
void *snd_usb_find_csint_desc(void *descstart, int desclen, void *after, u8 dsubtype);
int snd_usb_ctl_msg(struct usb_device *dev, unsigned int pipe, __u8 request, __u8 requesttype, __u16 value, __u16 index, void *data, __u16 size, int timeout);
int snd_usb_create_mixer(snd_usb_audio_t *chip, int ctrlif);
void snd_usb_mixer_disconnect(struct list_head *p);
int snd_usb_create_midi_interface(snd_usb_audio_t *chip, struct usb_interface *iface, const snd_usb_audio_quirk_t *quirk);
void snd_usbmidi_input_stop(struct list_head* p);
void snd_usbmidi_input_start(struct list_head* p);
void snd_usbmidi_disconnect(struct list_head *p);
/*
* retrieve usb_interface descriptor from the host interface
* (conditional for compatibility with the older API)
*/
#ifndef get_iface_desc
#define get_iface_desc(iface) (&(iface)->desc)
#define get_endpoint(alt,ep) (&(alt)->endpoint[ep].desc)
#define get_ep_desc(ep) (&(ep)->desc)
#define get_cfg_desc(cfg) (&(cfg)->desc)
#endif
#ifndef usb_pipe_needs_resubmit
#define usb_pipe_needs_resubmit(pipe) 1
#endif
#ifndef snd_usb_complete_callback
#define snd_usb_complete_callback(x) (x)
#endif
#ifndef snd_usb_get_speed
#define snd_usb_get_speed(dev) ((dev)->speed)
#endif
#endif /* __USBAUDIO_H */
|
