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1 | /* |
2 | * <linux/usb/audio.h> -- USB Audio definitions. | |
3 | * | |
4 | * Copyright (C) 2006 Thumtronics Pty Ltd. | |
5 | * Developed for Thumtronics by Grey Innovation | |
6 | * Ben Williamson <ben.williamson@greyinnovation.com> | |
7 | * | |
8 | * This software is distributed under the terms of the GNU General Public | |
9 | * License ("GPL") version 2, as published by the Free Software Foundation. | |
10 | * | |
11 | * This file holds USB constants and structures defined | |
12 | * by the USB Device Class Definition for Audio Devices. | |
13 | * Comments below reference relevant sections of that document: | |
14 | * | |
15 | * http://www.usb.org/developers/devclass_docs/audio10.pdf | |
16 | * | |
17 | * Types and defines in this file are either specific to version 1.0 of | |
18 | * this standard or common for newer versions. | |
19 | */ | |
20 | ||
21 | #ifndef _UAPI__LINUX_USB_AUDIO_H | |
22 | #define _UAPI__LINUX_USB_AUDIO_H | |
23 | ||
24 | #include <linux/types.h> | |
25 | ||
26 | /* bInterfaceProtocol values to denote the version of the standard used */ | |
27 | #define UAC_VERSION_1 0x00 | |
28 | #define UAC_VERSION_2 0x20 | |
29 | ||
30 | /* A.2 Audio Interface Subclass Codes */ | |
31 | #define USB_SUBCLASS_AUDIOCONTROL 0x01 | |
32 | #define USB_SUBCLASS_AUDIOSTREAMING 0x02 | |
33 | #define USB_SUBCLASS_MIDISTREAMING 0x03 | |
34 | ||
35 | /* A.5 Audio Class-Specific AC Interface Descriptor Subtypes */ | |
36 | #define UAC_HEADER 0x01 | |
37 | #define UAC_INPUT_TERMINAL 0x02 | |
38 | #define UAC_OUTPUT_TERMINAL 0x03 | |
39 | #define UAC_MIXER_UNIT 0x04 | |
40 | #define UAC_SELECTOR_UNIT 0x05 | |
41 | #define UAC_FEATURE_UNIT 0x06 | |
42 | #define UAC1_PROCESSING_UNIT 0x07 | |
43 | #define UAC1_EXTENSION_UNIT 0x08 | |
44 | ||
45 | /* A.6 Audio Class-Specific AS Interface Descriptor Subtypes */ | |
46 | #define UAC_AS_GENERAL 0x01 | |
47 | #define UAC_FORMAT_TYPE 0x02 | |
48 | #define UAC_FORMAT_SPECIFIC 0x03 | |
49 | ||
50 | /* A.7 Processing Unit Process Types */ | |
51 | #define UAC_PROCESS_UNDEFINED 0x00 | |
52 | #define UAC_PROCESS_UP_DOWNMIX 0x01 | |
53 | #define UAC_PROCESS_DOLBY_PROLOGIC 0x02 | |
54 | #define UAC_PROCESS_STEREO_EXTENDER 0x03 | |
55 | #define UAC_PROCESS_REVERB 0x04 | |
56 | #define UAC_PROCESS_CHORUS 0x05 | |
57 | #define UAC_PROCESS_DYN_RANGE_COMP 0x06 | |
58 | ||
59 | /* A.8 Audio Class-Specific Endpoint Descriptor Subtypes */ | |
60 | #define UAC_EP_GENERAL 0x01 | |
61 | ||
62 | /* A.9 Audio Class-Specific Request Codes */ | |
63 | #define UAC_SET_ 0x00 | |
64 | #define UAC_GET_ 0x80 | |
65 | ||
66 | #define UAC__CUR 0x1 | |
67 | #define UAC__MIN 0x2 | |
68 | #define UAC__MAX 0x3 | |
69 | #define UAC__RES 0x4 | |
70 | #define UAC__MEM 0x5 | |
71 | ||
72 | #define UAC_SET_CUR (UAC_SET_ | UAC__CUR) | |
73 | #define UAC_GET_CUR (UAC_GET_ | UAC__CUR) | |
74 | #define UAC_SET_MIN (UAC_SET_ | UAC__MIN) | |
75 | #define UAC_GET_MIN (UAC_GET_ | UAC__MIN) | |
76 | #define UAC_SET_MAX (UAC_SET_ | UAC__MAX) | |
77 | #define UAC_GET_MAX (UAC_GET_ | UAC__MAX) | |
78 | #define UAC_SET_RES (UAC_SET_ | UAC__RES) | |
79 | #define UAC_GET_RES (UAC_GET_ | UAC__RES) | |
80 | #define UAC_SET_MEM (UAC_SET_ | UAC__MEM) | |
81 | #define UAC_GET_MEM (UAC_GET_ | UAC__MEM) | |
82 | ||
83 | #define UAC_GET_STAT 0xff | |
84 | ||
85 | /* A.10 Control Selector Codes */ | |
86 | ||
87 | /* A.10.1 Terminal Control Selectors */ | |
88 | #define UAC_TERM_COPY_PROTECT 0x01 | |
89 | ||
90 | /* A.10.2 Feature Unit Control Selectors */ | |
91 | #define UAC_FU_MUTE 0x01 | |
92 | #define UAC_FU_VOLUME 0x02 | |
93 | #define UAC_FU_BASS 0x03 | |
94 | #define UAC_FU_MID 0x04 | |
95 | #define UAC_FU_TREBLE 0x05 | |
96 | #define UAC_FU_GRAPHIC_EQUALIZER 0x06 | |
97 | #define UAC_FU_AUTOMATIC_GAIN 0x07 | |
98 | #define UAC_FU_DELAY 0x08 | |
99 | #define UAC_FU_BASS_BOOST 0x09 | |
100 | #define UAC_FU_LOUDNESS 0x0a | |
101 | ||
102 | #define UAC_CONTROL_BIT(CS) (1 << ((CS) - 1)) | |
103 | ||
104 | /* A.10.3.1 Up/Down-mix Processing Unit Controls Selectors */ | |
105 | #define UAC_UD_ENABLE 0x01 | |
106 | #define UAC_UD_MODE_SELECT 0x02 | |
107 | ||
108 | /* A.10.3.2 Dolby Prologic (tm) Processing Unit Controls Selectors */ | |
109 | #define UAC_DP_ENABLE 0x01 | |
110 | #define UAC_DP_MODE_SELECT 0x02 | |
111 | ||
112 | /* A.10.3.3 3D Stereo Extender Processing Unit Control Selectors */ | |
113 | #define UAC_3D_ENABLE 0x01 | |
114 | #define UAC_3D_SPACE 0x02 | |
115 | ||
116 | /* A.10.3.4 Reverberation Processing Unit Control Selectors */ | |
117 | #define UAC_REVERB_ENABLE 0x01 | |
118 | #define UAC_REVERB_LEVEL 0x02 | |
119 | #define UAC_REVERB_TIME 0x03 | |
120 | #define UAC_REVERB_FEEDBACK 0x04 | |
121 | ||
122 | /* A.10.3.5 Chorus Processing Unit Control Selectors */ | |
123 | #define UAC_CHORUS_ENABLE 0x01 | |
124 | #define UAC_CHORUS_LEVEL 0x02 | |
125 | #define UAC_CHORUS_RATE 0x03 | |
126 | #define UAC_CHORUS_DEPTH 0x04 | |
127 | ||
128 | /* A.10.3.6 Dynamic Range Compressor Unit Control Selectors */ | |
129 | #define UAC_DCR_ENABLE 0x01 | |
130 | #define UAC_DCR_RATE 0x02 | |
131 | #define UAC_DCR_MAXAMPL 0x03 | |
132 | #define UAC_DCR_THRESHOLD 0x04 | |
133 | #define UAC_DCR_ATTACK_TIME 0x05 | |
134 | #define UAC_DCR_RELEASE_TIME 0x06 | |
135 | ||
136 | /* A.10.4 Extension Unit Control Selectors */ | |
137 | #define UAC_XU_ENABLE 0x01 | |
138 | ||
139 | /* MIDI - A.1 MS Class-Specific Interface Descriptor Subtypes */ | |
140 | #define UAC_MS_HEADER 0x01 | |
141 | #define UAC_MIDI_IN_JACK 0x02 | |
142 | #define UAC_MIDI_OUT_JACK 0x03 | |
143 | ||
144 | /* MIDI - A.1 MS Class-Specific Endpoint Descriptor Subtypes */ | |
145 | #define UAC_MS_GENERAL 0x01 | |
146 | ||
147 | /* Terminals - 2.1 USB Terminal Types */ | |
148 | #define UAC_TERMINAL_UNDEFINED 0x100 | |
149 | #define UAC_TERMINAL_STREAMING 0x101 | |
150 | #define UAC_TERMINAL_VENDOR_SPEC 0x1FF | |
151 | ||
152 | /* Terminal Control Selectors */ | |
153 | /* 4.3.2 Class-Specific AC Interface Descriptor */ | |
154 | struct uac1_ac_header_descriptor { | |
155 | __u8 bLength; /* 8 + n */ | |
156 | __u8 bDescriptorType; /* USB_DT_CS_INTERFACE */ | |
157 | __u8 bDescriptorSubtype; /* UAC_MS_HEADER */ | |
158 | __le16 bcdADC; /* 0x0100 */ | |
159 | __le16 wTotalLength; /* includes Unit and Terminal desc. */ | |
160 | __u8 bInCollection; /* n */ | |
161 | __u8 baInterfaceNr[]; /* [n] */ | |
162 | } __attribute__ ((packed)); | |
163 | ||
164 | #define UAC_DT_AC_HEADER_SIZE(n) (8 + (n)) | |
165 | ||
166 | /* As above, but more useful for defining your own descriptors: */ | |
167 | #define DECLARE_UAC_AC_HEADER_DESCRIPTOR(n) \ | |
168 | struct uac1_ac_header_descriptor_##n { \ | |
169 | __u8 bLength; \ | |
170 | __u8 bDescriptorType; \ | |
171 | __u8 bDescriptorSubtype; \ | |
172 | __le16 bcdADC; \ | |
173 | __le16 wTotalLength; \ | |
174 | __u8 bInCollection; \ | |
175 | __u8 baInterfaceNr[n]; \ | |
176 | } __attribute__ ((packed)) | |
177 | ||
178 | /* 4.3.2.1 Input Terminal Descriptor */ | |
179 | struct uac_input_terminal_descriptor { | |
180 | __u8 bLength; /* in bytes: 12 */ | |
181 | __u8 bDescriptorType; /* CS_INTERFACE descriptor type */ | |
182 | __u8 bDescriptorSubtype; /* INPUT_TERMINAL descriptor subtype */ | |
183 | __u8 bTerminalID; /* Constant uniquely terminal ID */ | |
184 | __le16 wTerminalType; /* USB Audio Terminal Types */ | |
185 | __u8 bAssocTerminal; /* ID of the Output Terminal associated */ | |
186 | __u8 bNrChannels; /* Number of logical output channels */ | |
187 | __le16 wChannelConfig; | |
188 | __u8 iChannelNames; | |
189 | __u8 iTerminal; | |
190 | } __attribute__ ((packed)); | |
191 | ||
192 | #define UAC_DT_INPUT_TERMINAL_SIZE 12 | |
193 | ||
194 | /* Terminals - 2.2 Input Terminal Types */ | |
195 | #define UAC_INPUT_TERMINAL_UNDEFINED 0x200 | |
196 | #define UAC_INPUT_TERMINAL_MICROPHONE 0x201 | |
197 | #define UAC_INPUT_TERMINAL_DESKTOP_MICROPHONE 0x202 | |
198 | #define UAC_INPUT_TERMINAL_PERSONAL_MICROPHONE 0x203 | |
199 | #define UAC_INPUT_TERMINAL_OMNI_DIR_MICROPHONE 0x204 | |
200 | #define UAC_INPUT_TERMINAL_MICROPHONE_ARRAY 0x205 | |
201 | #define UAC_INPUT_TERMINAL_PROC_MICROPHONE_ARRAY 0x206 | |
202 | ||
203 | /* Terminals - control selectors */ | |
204 | ||
205 | #define UAC_TERMINAL_CS_COPY_PROTECT_CONTROL 0x01 | |
206 | ||
207 | /* 4.3.2.2 Output Terminal Descriptor */ | |
208 | struct uac1_output_terminal_descriptor { | |
209 | __u8 bLength; /* in bytes: 9 */ | |
210 | __u8 bDescriptorType; /* CS_INTERFACE descriptor type */ | |
211 | __u8 bDescriptorSubtype; /* OUTPUT_TERMINAL descriptor subtype */ | |
212 | __u8 bTerminalID; /* Constant uniquely terminal ID */ | |
213 | __le16 wTerminalType; /* USB Audio Terminal Types */ | |
214 | __u8 bAssocTerminal; /* ID of the Input Terminal associated */ | |
215 | __u8 bSourceID; /* ID of the connected Unit or Terminal*/ | |
216 | __u8 iTerminal; | |
217 | } __attribute__ ((packed)); | |
218 | ||
219 | #define UAC_DT_OUTPUT_TERMINAL_SIZE 9 | |
220 | ||
221 | /* Terminals - 2.3 Output Terminal Types */ | |
222 | #define UAC_OUTPUT_TERMINAL_UNDEFINED 0x300 | |
223 | #define UAC_OUTPUT_TERMINAL_SPEAKER 0x301 | |
224 | #define UAC_OUTPUT_TERMINAL_HEADPHONES 0x302 | |
225 | #define UAC_OUTPUT_TERMINAL_HEAD_MOUNTED_DISPLAY_AUDIO 0x303 | |
226 | #define UAC_OUTPUT_TERMINAL_DESKTOP_SPEAKER 0x304 | |
227 | #define UAC_OUTPUT_TERMINAL_ROOM_SPEAKER 0x305 | |
228 | #define UAC_OUTPUT_TERMINAL_COMMUNICATION_SPEAKER 0x306 | |
229 | #define UAC_OUTPUT_TERMINAL_LOW_FREQ_EFFECTS_SPEAKER 0x307 | |
230 | ||
231 | /* Set bControlSize = 2 as default setting */ | |
232 | #define UAC_DT_FEATURE_UNIT_SIZE(ch) (7 + ((ch) + 1) * 2) | |
233 | ||
234 | /* As above, but more useful for defining your own descriptors: */ | |
235 | #define DECLARE_UAC_FEATURE_UNIT_DESCRIPTOR(ch) \ | |
236 | struct uac_feature_unit_descriptor_##ch { \ | |
237 | __u8 bLength; \ | |
238 | __u8 bDescriptorType; \ | |
239 | __u8 bDescriptorSubtype; \ | |
240 | __u8 bUnitID; \ | |
241 | __u8 bSourceID; \ | |
242 | __u8 bControlSize; \ | |
243 | __le16 bmaControls[ch + 1]; \ | |
244 | __u8 iFeature; \ | |
245 | } __attribute__ ((packed)) | |
246 | ||
247 | /* 4.3.2.3 Mixer Unit Descriptor */ | |
248 | struct uac_mixer_unit_descriptor { | |
249 | __u8 bLength; | |
250 | __u8 bDescriptorType; | |
251 | __u8 bDescriptorSubtype; | |
252 | __u8 bUnitID; | |
253 | __u8 bNrInPins; | |
254 | __u8 baSourceID[]; | |
255 | } __attribute__ ((packed)); | |
256 | ||
257 | static inline __u8 uac_mixer_unit_bNrChannels(struct uac_mixer_unit_descriptor *desc) | |
258 | { | |
259 | return desc->baSourceID[desc->bNrInPins]; | |
260 | } | |
261 | ||
262 | static inline __u32 uac_mixer_unit_wChannelConfig(struct uac_mixer_unit_descriptor *desc, | |
263 | int protocol) | |
264 | { | |
265 | if (protocol == UAC_VERSION_1) | |
266 | return (desc->baSourceID[desc->bNrInPins + 2] << 8) | | |
267 | desc->baSourceID[desc->bNrInPins + 1]; | |
268 | else | |
269 | return (desc->baSourceID[desc->bNrInPins + 4] << 24) | | |
270 | (desc->baSourceID[desc->bNrInPins + 3] << 16) | | |
271 | (desc->baSourceID[desc->bNrInPins + 2] << 8) | | |
272 | (desc->baSourceID[desc->bNrInPins + 1]); | |
273 | } | |
274 | ||
275 | static inline __u8 uac_mixer_unit_iChannelNames(struct uac_mixer_unit_descriptor *desc, | |
276 | int protocol) | |
277 | { | |
278 | return (protocol == UAC_VERSION_1) ? | |
279 | desc->baSourceID[desc->bNrInPins + 3] : | |
280 | desc->baSourceID[desc->bNrInPins + 5]; | |
281 | } | |
282 | ||
283 | static inline __u8 *uac_mixer_unit_bmControls(struct uac_mixer_unit_descriptor *desc, | |
284 | int protocol) | |
285 | { | |
286 | return (protocol == UAC_VERSION_1) ? | |
287 | &desc->baSourceID[desc->bNrInPins + 4] : | |
288 | &desc->baSourceID[desc->bNrInPins + 6]; | |
289 | } | |
290 | ||
291 | static inline __u8 uac_mixer_unit_iMixer(struct uac_mixer_unit_descriptor *desc) | |
292 | { | |
293 | __u8 *raw = (__u8 *) desc; | |
294 | return raw[desc->bLength - 1]; | |
295 | } | |
296 | ||
297 | /* 4.3.2.4 Selector Unit Descriptor */ | |
298 | struct uac_selector_unit_descriptor { | |
299 | __u8 bLength; | |
300 | __u8 bDescriptorType; | |
301 | __u8 bDescriptorSubtype; | |
302 | __u8 bUintID; | |
303 | __u8 bNrInPins; | |
304 | __u8 baSourceID[]; | |
305 | } __attribute__ ((packed)); | |
306 | ||
307 | static inline __u8 uac_selector_unit_iSelector(struct uac_selector_unit_descriptor *desc) | |
308 | { | |
309 | __u8 *raw = (__u8 *) desc; | |
310 | return raw[desc->bLength - 1]; | |
311 | } | |
312 | ||
313 | /* 4.3.2.5 Feature Unit Descriptor */ | |
314 | struct uac_feature_unit_descriptor { | |
315 | __u8 bLength; | |
316 | __u8 bDescriptorType; | |
317 | __u8 bDescriptorSubtype; | |
318 | __u8 bUnitID; | |
319 | __u8 bSourceID; | |
320 | __u8 bControlSize; | |
321 | __u8 bmaControls[0]; /* variable length */ | |
322 | } __attribute__((packed)); | |
323 | ||
324 | static inline __u8 uac_feature_unit_iFeature(struct uac_feature_unit_descriptor *desc) | |
325 | { | |
326 | __u8 *raw = (__u8 *) desc; | |
327 | return raw[desc->bLength - 1]; | |
328 | } | |
329 | ||
330 | /* 4.3.2.6 Processing Unit Descriptors */ | |
331 | struct uac_processing_unit_descriptor { | |
332 | __u8 bLength; | |
333 | __u8 bDescriptorType; | |
334 | __u8 bDescriptorSubtype; | |
335 | __u8 bUnitID; | |
8bd226f9 | 336 | __le16 wProcessType; |
5e1ddb48 DH |
337 | __u8 bNrInPins; |
338 | __u8 baSourceID[]; | |
339 | } __attribute__ ((packed)); | |
340 | ||
341 | static inline __u8 uac_processing_unit_bNrChannels(struct uac_processing_unit_descriptor *desc) | |
342 | { | |
343 | return desc->baSourceID[desc->bNrInPins]; | |
344 | } | |
345 | ||
346 | static inline __u32 uac_processing_unit_wChannelConfig(struct uac_processing_unit_descriptor *desc, | |
347 | int protocol) | |
348 | { | |
349 | if (protocol == UAC_VERSION_1) | |
350 | return (desc->baSourceID[desc->bNrInPins + 2] << 8) | | |
351 | desc->baSourceID[desc->bNrInPins + 1]; | |
352 | else | |
353 | return (desc->baSourceID[desc->bNrInPins + 4] << 24) | | |
354 | (desc->baSourceID[desc->bNrInPins + 3] << 16) | | |
355 | (desc->baSourceID[desc->bNrInPins + 2] << 8) | | |
356 | (desc->baSourceID[desc->bNrInPins + 1]); | |
357 | } | |
358 | ||
359 | static inline __u8 uac_processing_unit_iChannelNames(struct uac_processing_unit_descriptor *desc, | |
360 | int protocol) | |
361 | { | |
362 | return (protocol == UAC_VERSION_1) ? | |
363 | desc->baSourceID[desc->bNrInPins + 3] : | |
364 | desc->baSourceID[desc->bNrInPins + 5]; | |
365 | } | |
366 | ||
367 | static inline __u8 uac_processing_unit_bControlSize(struct uac_processing_unit_descriptor *desc, | |
368 | int protocol) | |
369 | { | |
370 | return (protocol == UAC_VERSION_1) ? | |
371 | desc->baSourceID[desc->bNrInPins + 4] : | |
372 | desc->baSourceID[desc->bNrInPins + 6]; | |
373 | } | |
374 | ||
375 | static inline __u8 *uac_processing_unit_bmControls(struct uac_processing_unit_descriptor *desc, | |
376 | int protocol) | |
377 | { | |
378 | return (protocol == UAC_VERSION_1) ? | |
379 | &desc->baSourceID[desc->bNrInPins + 5] : | |
380 | &desc->baSourceID[desc->bNrInPins + 7]; | |
381 | } | |
382 | ||
383 | static inline __u8 uac_processing_unit_iProcessing(struct uac_processing_unit_descriptor *desc, | |
384 | int protocol) | |
385 | { | |
386 | __u8 control_size = uac_processing_unit_bControlSize(desc, protocol); | |
b531f81b PM |
387 | return *(uac_processing_unit_bmControls(desc, protocol) |
388 | + control_size); | |
5e1ddb48 DH |
389 | } |
390 | ||
391 | static inline __u8 *uac_processing_unit_specific(struct uac_processing_unit_descriptor *desc, | |
392 | int protocol) | |
393 | { | |
394 | __u8 control_size = uac_processing_unit_bControlSize(desc, protocol); | |
b531f81b PM |
395 | return uac_processing_unit_bmControls(desc, protocol) |
396 | + control_size + 1; | |
5e1ddb48 DH |
397 | } |
398 | ||
399 | /* 4.5.2 Class-Specific AS Interface Descriptor */ | |
400 | struct uac1_as_header_descriptor { | |
401 | __u8 bLength; /* in bytes: 7 */ | |
402 | __u8 bDescriptorType; /* USB_DT_CS_INTERFACE */ | |
403 | __u8 bDescriptorSubtype; /* AS_GENERAL */ | |
404 | __u8 bTerminalLink; /* Terminal ID of connected Terminal */ | |
405 | __u8 bDelay; /* Delay introduced by the data path */ | |
406 | __le16 wFormatTag; /* The Audio Data Format */ | |
407 | } __attribute__ ((packed)); | |
408 | ||
409 | #define UAC_DT_AS_HEADER_SIZE 7 | |
410 | ||
411 | /* Formats - A.1.1 Audio Data Format Type I Codes */ | |
412 | #define UAC_FORMAT_TYPE_I_UNDEFINED 0x0 | |
413 | #define UAC_FORMAT_TYPE_I_PCM 0x1 | |
414 | #define UAC_FORMAT_TYPE_I_PCM8 0x2 | |
415 | #define UAC_FORMAT_TYPE_I_IEEE_FLOAT 0x3 | |
416 | #define UAC_FORMAT_TYPE_I_ALAW 0x4 | |
417 | #define UAC_FORMAT_TYPE_I_MULAW 0x5 | |
418 | ||
419 | struct uac_format_type_i_continuous_descriptor { | |
420 | __u8 bLength; /* in bytes: 8 + (ns * 3) */ | |
421 | __u8 bDescriptorType; /* USB_DT_CS_INTERFACE */ | |
422 | __u8 bDescriptorSubtype; /* FORMAT_TYPE */ | |
423 | __u8 bFormatType; /* FORMAT_TYPE_1 */ | |
424 | __u8 bNrChannels; /* physical channels in the stream */ | |
425 | __u8 bSubframeSize; /* */ | |
426 | __u8 bBitResolution; | |
427 | __u8 bSamFreqType; | |
428 | __u8 tLowerSamFreq[3]; | |
429 | __u8 tUpperSamFreq[3]; | |
430 | } __attribute__ ((packed)); | |
431 | ||
432 | #define UAC_FORMAT_TYPE_I_CONTINUOUS_DESC_SIZE 14 | |
433 | ||
434 | struct uac_format_type_i_discrete_descriptor { | |
435 | __u8 bLength; /* in bytes: 8 + (ns * 3) */ | |
436 | __u8 bDescriptorType; /* USB_DT_CS_INTERFACE */ | |
437 | __u8 bDescriptorSubtype; /* FORMAT_TYPE */ | |
438 | __u8 bFormatType; /* FORMAT_TYPE_1 */ | |
439 | __u8 bNrChannels; /* physical channels in the stream */ | |
440 | __u8 bSubframeSize; /* */ | |
441 | __u8 bBitResolution; | |
442 | __u8 bSamFreqType; | |
443 | __u8 tSamFreq[][3]; | |
444 | } __attribute__ ((packed)); | |
445 | ||
446 | #define DECLARE_UAC_FORMAT_TYPE_I_DISCRETE_DESC(n) \ | |
447 | struct uac_format_type_i_discrete_descriptor_##n { \ | |
448 | __u8 bLength; \ | |
449 | __u8 bDescriptorType; \ | |
450 | __u8 bDescriptorSubtype; \ | |
451 | __u8 bFormatType; \ | |
452 | __u8 bNrChannels; \ | |
453 | __u8 bSubframeSize; \ | |
454 | __u8 bBitResolution; \ | |
455 | __u8 bSamFreqType; \ | |
456 | __u8 tSamFreq[n][3]; \ | |
457 | } __attribute__ ((packed)) | |
458 | ||
459 | #define UAC_FORMAT_TYPE_I_DISCRETE_DESC_SIZE(n) (8 + (n * 3)) | |
460 | ||
461 | struct uac_format_type_i_ext_descriptor { | |
462 | __u8 bLength; | |
463 | __u8 bDescriptorType; | |
464 | __u8 bDescriptorSubtype; | |
465 | __u8 bFormatType; | |
466 | __u8 bSubslotSize; | |
467 | __u8 bBitResolution; | |
468 | __u8 bHeaderLength; | |
469 | __u8 bControlSize; | |
470 | __u8 bSideBandProtocol; | |
471 | } __attribute__((packed)); | |
472 | ||
473 | /* Formats - Audio Data Format Type I Codes */ | |
474 | ||
475 | #define UAC_FORMAT_TYPE_II_MPEG 0x1001 | |
476 | #define UAC_FORMAT_TYPE_II_AC3 0x1002 | |
477 | ||
478 | struct uac_format_type_ii_discrete_descriptor { | |
479 | __u8 bLength; | |
480 | __u8 bDescriptorType; | |
481 | __u8 bDescriptorSubtype; | |
482 | __u8 bFormatType; | |
483 | __le16 wMaxBitRate; | |
484 | __le16 wSamplesPerFrame; | |
485 | __u8 bSamFreqType; | |
486 | __u8 tSamFreq[][3]; | |
487 | } __attribute__((packed)); | |
488 | ||
489 | struct uac_format_type_ii_ext_descriptor { | |
490 | __u8 bLength; | |
491 | __u8 bDescriptorType; | |
492 | __u8 bDescriptorSubtype; | |
493 | __u8 bFormatType; | |
8bd226f9 RB |
494 | __le16 wMaxBitRate; |
495 | __le16 wSamplesPerFrame; | |
5e1ddb48 DH |
496 | __u8 bHeaderLength; |
497 | __u8 bSideBandProtocol; | |
498 | } __attribute__((packed)); | |
499 | ||
500 | /* type III */ | |
501 | #define UAC_FORMAT_TYPE_III_IEC1937_AC3 0x2001 | |
502 | #define UAC_FORMAT_TYPE_III_IEC1937_MPEG1_LAYER1 0x2002 | |
503 | #define UAC_FORMAT_TYPE_III_IEC1937_MPEG2_NOEXT 0x2003 | |
504 | #define UAC_FORMAT_TYPE_III_IEC1937_MPEG2_EXT 0x2004 | |
505 | #define UAC_FORMAT_TYPE_III_IEC1937_MPEG2_LAYER1_LS 0x2005 | |
506 | #define UAC_FORMAT_TYPE_III_IEC1937_MPEG2_LAYER23_LS 0x2006 | |
507 | ||
508 | /* Formats - A.2 Format Type Codes */ | |
509 | #define UAC_FORMAT_TYPE_UNDEFINED 0x0 | |
510 | #define UAC_FORMAT_TYPE_I 0x1 | |
511 | #define UAC_FORMAT_TYPE_II 0x2 | |
512 | #define UAC_FORMAT_TYPE_III 0x3 | |
513 | #define UAC_EXT_FORMAT_TYPE_I 0x81 | |
514 | #define UAC_EXT_FORMAT_TYPE_II 0x82 | |
515 | #define UAC_EXT_FORMAT_TYPE_III 0x83 | |
516 | ||
517 | struct uac_iso_endpoint_descriptor { | |
518 | __u8 bLength; /* in bytes: 7 */ | |
519 | __u8 bDescriptorType; /* USB_DT_CS_ENDPOINT */ | |
520 | __u8 bDescriptorSubtype; /* EP_GENERAL */ | |
521 | __u8 bmAttributes; | |
522 | __u8 bLockDelayUnits; | |
523 | __le16 wLockDelay; | |
524 | } __attribute__((packed)); | |
525 | #define UAC_ISO_ENDPOINT_DESC_SIZE 7 | |
526 | ||
527 | #define UAC_EP_CS_ATTR_SAMPLE_RATE 0x01 | |
528 | #define UAC_EP_CS_ATTR_PITCH_CONTROL 0x02 | |
529 | #define UAC_EP_CS_ATTR_FILL_MAX 0x80 | |
530 | ||
531 | /* status word format (3.7.1.1) */ | |
532 | ||
533 | #define UAC1_STATUS_TYPE_ORIG_MASK 0x0f | |
534 | #define UAC1_STATUS_TYPE_ORIG_AUDIO_CONTROL_IF 0x0 | |
535 | #define UAC1_STATUS_TYPE_ORIG_AUDIO_STREAM_IF 0x1 | |
536 | #define UAC1_STATUS_TYPE_ORIG_AUDIO_STREAM_EP 0x2 | |
537 | ||
538 | #define UAC1_STATUS_TYPE_IRQ_PENDING (1 << 7) | |
539 | #define UAC1_STATUS_TYPE_MEM_CHANGED (1 << 6) | |
540 | ||
541 | struct uac1_status_word { | |
542 | __u8 bStatusType; | |
543 | __u8 bOriginator; | |
544 | } __attribute__((packed)); | |
545 | ||
546 | ||
547 | #endif /* _UAPI__LINUX_USB_AUDIO_H */ |