aboutsummaryrefslogtreecommitdiff
path: root/include/linux/usb/audio-v2.h
blob: 383b94ba8c2002f4f07e73eedbf8adb92a6211e1 (plain)
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
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
/*
 * Copyright (c) 2010 Daniel Mack <daniel@caiaq.de>
 *
 * This software is distributed under the terms of the GNU General Public
 * License ("GPL") version 2, as published by the Free Software Foundation.
 *
 * This file holds USB constants and structures defined
 * by the USB Device Class Definition for Audio Devices in version 2.0.
 * Comments below reference relevant sections of the documents contained
 * in http://www.usb.org/developers/devclass_docs/Audio2.0_final.zip
 */

#ifndef __LINUX_USB_AUDIO_V2_H
#define __LINUX_USB_AUDIO_V2_H

#include <linux/types.h>

/* v1.0 and v2.0 of this standard have many things in common. For the rest
 * of the definitions, please refer to audio.h */

static inline bool uac2_control_is_readable(u32 bmControls, u8 control)
{
	return (bmControls >> (control * 2)) & 0x1;
}

static inline bool uac2_control_is_writeable(u32 bmControls, u8 control)
{
	return (bmControls >> (control * 2)) & 0x2;
}

/* 4.7.2.1 Clock Source Descriptor */

struct uac_clock_source_descriptor {
	__u8 bLength;
	__u8 bDescriptorType;
	__u8 bDescriptorSubtype;
	__u8 bClockID;
	__u8 bmAttributes;
	__u8 bmControls;
	__u8 bAssocTerminal;
	__u8 iClockSource;
} __attribute__((packed));

/* bmAttribute fields */
#define UAC_CLOCK_SOURCE_TYPE_EXT	0x0
#define UAC_CLOCK_SOURCE_TYPE_INT_FIXED	0x1
#define UAC_CLOCK_SOURCE_TYPE_INT_VAR	0x2
#define UAC_CLOCK_SOURCE_TYPE_INT_PROG	0x3
#define UAC_CLOCK_SOURCE_SYNCED_TO_SOF	(1 << 2)

/* 4.7.2.2 Clock Source Descriptor */

struct uac_clock_selector_descriptor {
	__u8 bLength;
	__u8 bDescriptorType;
	__u8 bDescriptorSubtype;
	__u8 bClockID;
	__u8 bNrInPins;
	__u8 baCSourceID[];
	/* bmControls, bAssocTerminal and iClockSource omitted */
} __attribute__((packed));

/* 4.7.2.3 Clock Multiplier Descriptor */

struct uac_clock_multiplier_descriptor {
	__u8 bLength;
	__u8 bDescriptorType;
	__u8 bDescriptorSubtype;
	__u8 bClockID;
	__u8 bCSourceID;
	__u8 bmControls;
	__u8 iClockMultiplier;
} __attribute__((packed));

/* 4.7.2.4 Input terminal descriptor */

struct uac2_input_terminal_descriptor {
	__u8 bLength;
	__u8 bDescriptorType;
	__u8 bDescriptorSubtype;
	__u8 bTerminalID;
	__u16 wTerminalType;
	__u8 bAssocTerminal;
	__u8 bCSourceID;
	__u8 bNrChannels;
	__u32 bmChannelConfig;
	__u8 iChannelNames;
	__u16 bmControls;
	__u8 iTerminal;
} __attribute__((packed));

/* 4.7.2.5 Output terminal descriptor */

struct uac2_output_terminal_descriptor {
	__u8 bLength;
	__u8 bDescriptorType;
	__u8 bDescriptorSubtype;
	__u8 bTerminalID;
	__u16 wTerminalType;
	__u8 bAssocTerminal;
	__u8 bSourceID;
	__u8 bCSourceID;
	__u16 bmControls;
	__u8 iTerminal;
} __attribute__((packed));



/* 4.7.2.8 Feature Unit Descriptor */

struct uac2_feature_unit_descriptor {
	__u8 bLength;
	__u8 bDescriptorType;
	__u8 bDescriptorSubtype;
	__u8 bUnitID;
	__u8 bSourceID;
	/* bmaControls is actually u32,
	 * but u8 is needed for the hybrid parser */
	__u8 bmaControls[0]; /* variable length */
} __attribute__((packed));

/* 4.9.2 Class-Specific AS Interface Descriptor */

struct uac_as_header_descriptor_v2 {
	__u8 bLength;
	__u8 bDescriptorType;
	__u8 bDescriptorSubtype;
	__u8 bTerminalLink;
	__u8 bmControls;
	__u8 bFormatType;
	__u32 bmFormats;
	__u8 bNrChannels;
	__u32 bmChannelConfig;
	__u8 iChannelNames;
} __attribute__((packed));

/* 4.10.1.2 Class-Specific AS Isochronous Audio Data Endpoint Descriptor */

struct uac2_iso_endpoint_descriptor {
	__u8  bLength;			/* in bytes: 8 */
	__u8  bDescriptorType;		/* USB_DT_CS_ENDPOINT */
	__u8  bDescriptorSubtype;	/* EP_GENERAL */
	__u8  bmAttributes;
	__u8  bmControls;
	__u8  bLockDelayUnits;
	__le16 wLockDelay;
} __attribute__((packed));

#define UAC2_CONTROL_PITCH		(3 << 0)
#define UAC2_CONTROL_DATA_OVERRUN	(3 << 2)
#define UAC2_CONTROL_DATA_UNDERRUN	(3 << 4)

/* 6.1 Interrupt Data Message */

#define UAC2_INTERRUPT_DATA_MSG_VENDOR	(1 << 0)
#define UAC2_INTERRUPT_DATA_MSG_EP	(1 << 1)

struct uac2_interrupt_data_msg {
	__u8 bInfo;
	__u8 bAttribute;
	__le16 wValue;
	__le16 wIndex;
} __attribute__((packed));

/* A.7 Audio Function Category Codes */
#define UAC2_FUNCTION_SUBCLASS_UNDEFINED	0x00
#define UAC2_FUNCTION_DESKTOP_SPEAKER		0x01
#define UAC2_FUNCTION_HOME_THEATER		0x02
#define UAC2_FUNCTION_MICROPHONE		0x03
#define UAC2_FUNCTION_HEADSET			0x04
#define UAC2_FUNCTION_TELEPHONE			0x05
#define UAC2_FUNCTION_CONVERTER			0x06
#define UAC2_FUNCTION_SOUND_RECORDER		0x07
#define UAC2_FUNCTION_IO_BOX			0x08
#define UAC2_FUNCTION_MUSICAL_INSTRUMENT	0x09
#define UAC2_FUNCTION_PRO_AUDIO			0x0a
#define UAC2_FUNCTION_AUDIO_VIDEO		0x0b
#define UAC2_FUNCTION_CONTROL_PANEL		0x0c
#define UAC2_FUNCTION_OTHER			0xff

/* A.9 Audio Class-Specific AC Interface Descriptor Subtypes */
/* see audio.h for the rest, which is identical to v1 */
#define UAC2_EFFECT_UNIT			0x07
#define UAC2_PROCESSING_UNIT_V2		0x08
#define UAC2_EXTENSION_UNIT_V2		0x09
#define UAC2_CLOCK_SOURCE		0x0a
#define UAC2_CLOCK_SELECTOR		0x0b
#define UAC2_CLOCK_MULTIPLIER		0x0c
#define UAC2_SAMPLE_RATE_CONVERTER	0x0d

/* A.10 Audio Class-Specific AS Interface Descriptor Subtypes */
/* see audio.h for the rest, which is identical to v1 */
#define UAC2_ENCODER			0x03
#define UAC2_DECODER			0x04

/* A.11 Effect Unit Effect Types */
#define UAC2_EFFECT_UNDEFINED		0x00
#define UAC2_EFFECT_PARAM_EQ		0x01
#define UAC2_EFFECT_REVERB		0x02
#define UAC2_EFFECT_MOD_DELAY		0x03
#define UAC2_EFFECT_DYN_RANGE_COMP	0x04

/* A.12 Processing Unit Process Types */
#define UAC2_PROCESS_UNDEFINED		0x00
#define UAC2_PROCESS_UP_DOWNMIX		0x01
#define UAC2_PROCESS_DOLBY_PROLOCIC	0x02
#define UAC2_PROCESS_STEREO_EXTENDER	0x03

/* A.14 Audio Class-Specific Request Codes */
#define UAC2_CS_CUR			0x01
#define UAC2_CS_RANGE			0x02
#define UAC2_CS_MEM			0x03

/* A.15 Encoder Type Codes */
#define UAC2_ENCODER_UNDEFINED		0x00
#define UAC2_ENCODER_OTHER		0x01
#define UAC2_ENCODER_MPEG		0x02
#define UAC2_ENCODER_AC3		0x03
#define UAC2_ENCODER_WMA		0x04
#define UAC2_ENCODER_DTS		0x05

/* A.16 Decoder Type Codes */
#define UAC2_DECODER_UNDEFINED		0x00
#define UAC2_DECODER_OTHER		0x01
#define UAC2_DECODER_MPEG		0x02
#define UAC2_DECODER_AC3		0x03
#define UAC2_DECODER_WMA		0x04
#define UAC2_DECODER_DTS		0x05

/* A.17.1 Clock Source Control Selectors */
#define UAC2_CS_UNDEFINED		0x00
#define UAC2_CS_CONTROL_SAM_FREQ	0x01
#define UAC2_CS_CONTROL_CLOCK_VALID	0x02

/* A.17.2 Clock Selector Control Selectors */
#define UAC2_CX_UNDEFINED		0x00
#define UAC2_CX_CLOCK_SELECTOR		0x01

/* A.17.3 Clock Multiplier Control Selectors */
#define UAC2_CM_UNDEFINED		0x00
#define UAC2_CM_NUMERATOR		0x01
#define UAC2_CM_DENOMINTATOR		0x02

/* A.17.4 Terminal Control Selectors */
#define UAC2_TE_UNDEFINED		0x00
#define UAC2_TE_COPY_PROTECT		0x01
#define UAC2_TE_CONNECTOR		0x02
#define UAC2_TE_OVERLOAD		0x03
#define UAC2_TE_CLUSTER			0x04
#define UAC2_TE_UNDERFLOW		0x05
#define UAC2_TE_OVERFLOW		0x06
#define UAC2_TE_LATENCY			0x07

/* A.17.5 Mixer Control Selectors */
#define UAC2_MU_UNDEFINED		0x00
#define UAC2_MU_MIXER			0x01
#define UAC2_MU_CLUSTER			0x02
#define UAC2_MU_UNDERFLOW		0x03
#define UAC2_MU_OVERFLOW		0x04
#define UAC2_MU_LATENCY			0x05

/* A.17.6 Selector Control Selectors */
#define UAC2_SU_UNDEFINED		0x00
#define UAC2_SU_SELECTOR		0x01
#define UAC2_SU_LATENCY			0x02

/* A.17.7 Feature Unit Control Selectors */
/* see audio.h for the rest, which is identical to v1 */
#define UAC2_FU_INPUT_GAIN		0x0b
#define UAC2_FU_INPUT_GAIN_PAD		0x0c
#define UAC2_FU_PHASE_INVERTER		0x0d
#define UAC2_FU_UNDERFLOW		0x0e
#define UAC2_FU_OVERFLOW		0x0f
#define UAC2_FU_LATENCY			0x10

/* A.17.8.1 Parametric Equalizer Section Effect Unit Control Selectors */
#define UAC2_PE_UNDEFINED		0x00
#define UAC2_PE_ENABLE			0x01
#define UAC2_PE_CENTERFREQ		0x02
#define UAC2_PE_QFACTOR			0x03
#define UAC2_PE_GAIN			0x04
#define UAC2_PE_UNDERFLOW		0x05
#define UAC2_PE_OVERFLOW		0x06
#define UAC2_PE_LATENCY			0x07

/* A.17.8.2 Reverberation Effect Unit Control Selectors */
#define UAC2_RV_UNDEFINED		0x00
#define UAC2_RV_ENABLE			0x01
#define UAC2_RV_TYPE			0x02
#define UAC2_RV_LEVEL			0x03
#define UAC2_RV_TIME			0x04
#define UAC2_RV_FEEDBACK		0x05
#define UAC2_RV_PREDELAY		0x06
#define UAC2_RV_DENSITY			0x07
#define UAC2_RV_HIFREQ_ROLLOFF		0x08
#define UAC2_RV_UNDERFLOW		0x09
#define UAC2_RV_OVERFLOW		0x0a
#define UAC2_RV_LATENCY			0x0b

/* A.17.8.3 Modulation Delay Effect Control Selectors */
#define UAC2_MD_UNDEFINED		0x00
#define UAC2_MD_ENABLE			0x01
#define UAC2_MD_BALANCE			0x02
#define UAC2_MD_RATE			0x03
#define UAC2_MD_DEPTH			0x04
#define UAC2_MD_TIME			0x05
#define UAC2_MD_FEEDBACK		0x06
#define UAC2_MD_UNDERFLOW		0x07
#define UAC2_MD_OVERFLOW		0x08
#define UAC2_MD_LATENCY			0x09

/* A.17.8.4 Dynamic Range Compressor Effect Unit Control Selectors */
#define UAC2_DR_UNDEFINED		0x00
#define UAC2_DR_ENABLE			0x01
#define UAC2_DR_COMPRESSION_RATE	0x02
#define UAC2_DR_MAXAMPL			0x03
#define UAC2_DR_THRESHOLD		0x04
#define UAC2_DR_ATTACK_TIME		0x05
#define UAC2_DR_RELEASE_TIME		0x06
#define UAC2_DR_UNDEFLOW		0x07
#define UAC2_DR_OVERFLOW		0x08
#define UAC2_DR_LATENCY			0x09

/* A.17.9.1 Up/Down-mix Processing Unit Control Selectors */
#define UAC2_UD_UNDEFINED		0x00
#define UAC2_UD_ENABLE			0x01
#define UAC2_UD_MODE_SELECT		0x02
#define UAC2_UD_CLUSTER			0x03
#define UAC2_UD_UNDERFLOW		0x04
#define UAC2_UD_OVERFLOW		0x05
#define UAC2_UD_LATENCY			0x06

/* A.17.9.2 Dolby Prologic[tm] Processing Unit Control Selectors */
#define UAC2_DP_UNDEFINED		0x00
#define UAC2_DP_ENABLE			0x01
#define UAC2_DP_MODE_SELECT		0x02
#define UAC2_DP_CLUSTER			0x03
#define UAC2_DP_UNDERFFLOW		0x04
#define UAC2_DP_OVERFLOW		0x05
#define UAC2_DP_LATENCY			0x06

/* A.17.9.3 Stereo Expander Processing Unit Control Selectors */
#define UAC2_ST_EXT_UNDEFINED		0x00
#define UAC2_ST_EXT_ENABLE		0x01
#define UAC2_ST_EXT_WIDTH		0x02
#define UAC2_ST_EXT_UNDEFLOW		0x03
#define UAC2_ST_EXT_OVERFLOW		0x04
#define UAC2_ST_EXT_LATENCY		0x05

/* A.17.10 Extension Unit Control Selectors */
#define UAC2_XU_UNDEFINED		0x00
#define UAC2_XU_ENABLE			0x01
#define UAC2_XU_CLUSTER			0x02
#define UAC2_XU_UNDERFLOW		0x03
#define UAC2_XU_OVERFLOW		0x04
#define UAC2_XU_LATENCY			0x05

/* A.17.11 AudioStreaming Interface Control Selectors */
#define UAC2_AS_UNDEFINED		0x00
#define UAC2_AS_ACT_ALT_SETTING		0x01
#define UAC2_AS_VAL_ALT_SETTINGS	0x02
#define UAC2_AS_AUDIO_DATA_FORMAT	0x03

/* A.17.12 Encoder Control Selectors */
#define UAC2_EN_UNDEFINED		0x00
#define UAC2_EN_BIT_RATE		0x01
#define UAC2_EN_QUALITY			0x02
#define UAC2_EN_VBR			0x03
#define UAC2_EN_TYPE			0x04
#define UAC2_EN_UNDERFLOW		0x05
#define UAC2_EN_OVERFLOW		0x06
#define UAC2_EN_ENCODER_ERROR		0x07
#define UAC2_EN_PARAM1			0x08
#define UAC2_EN_PARAM2			0x09
#define UAC2_EN_PARAM3			0x0a
#define UAC2_EN_PARAM4			0x0b
#define UAC2_EN_PARAM5			0x0c
#define UAC2_EN_PARAM6			0x0d
#define UAC2_EN_PARAM7			0x0e
#define UAC2_EN_PARAM8			0x0f

/* A.17.13.1 MPEG Decoder Control Selectors */
#define UAC2_MPEG_UNDEFINED		0x00
#define UAC2_MPEG_DUAL_CHANNEL		0x01
#define UAC2_MPEG_SECOND_STEREO		0x02
#define UAC2_MPEG_MULTILINGUAL		0x03
#define UAC2_MPEG_DYN_RANGE		0x04
#define UAC2_MPEG_SCALING		0x05
#define UAC2_MPEG_HILO_SCALING		0x06
#define UAC2_MPEG_UNDERFLOW		0x07
#define UAC2_MPEG_OVERFLOW		0x08
#define UAC2_MPEG_DECODER_ERROR		0x09

/* A17.13.2 AC3 Decoder Control Selectors */
#define UAC2_AC3_UNDEFINED		0x00
#define UAC2_AC3_MODE			0x01
#define UAC2_AC3_DYN_RANGE		0x02
#define UAC2_AC3_SCALING		0x03
#define UAC2_AC3_HILO_SCALING		0x04
#define UAC2_AC3_UNDERFLOW		0x05
#define UAC2_AC3_OVERFLOW		0x06
#define UAC2_AC3_DECODER_ERROR		0x07

/* A17.13.3 WMA Decoder Control Selectors */
#define UAC2_WMA_UNDEFINED		0x00
#define UAC2_WMA_UNDERFLOW		0x01
#define UAC2_WMA_OVERFLOW		0x02
#define UAC2_WMA_DECODER_ERROR		0x03

/* A17.13.4 DTS Decoder Control Selectors */
#define UAC2_DTS_UNDEFINED		0x00
#define UAC2_DTS_UNDERFLOW		0x01
#define UAC2_DTS_OVERFLOW		0x02
#define UAC2_DTS_DECODER_ERROR		0x03

/* A17.14 Endpoint Control Selectors */
#define UAC2_EP_CS_UNDEFINED		0x00
#define UAC2_EP_CS_PITCH		0x01
#define UAC2_EP_CS_DATA_OVERRUN		0x02
#define UAC2_EP_CS_DATA_UNDERRUN	0x03

#endif /* __LINUX_USB_AUDIO_V2_H */