include/linux/usb/audio-v2.h

   1 /*
   2  * Copyright (c) 2010 Daniel Mack <daniel@caiaq.de>
   3  *
   4  * This software is distributed under the terms of the GNU General Public
   5  * License ("GPL") version 2, as published by the Free Software Foundation.
   6  *
   7  * This file holds USB constants and structures defined
   8  * by the USB Device Class Definition for Audio Devices in version 2.0.
   9  * Comments below reference relevant sections of the documents contained
  10  * in http://www.usb.org/developers/devclass_docs/Audio2.0_final.zip
  11  */
  12
  13 #ifndef __LINUX_USB_AUDIO_V2_H
  14 #define __LINUX_USB_AUDIO_V2_H
  15
  16 #include <linux/types.h>
  17
  18 /* v1.0 and v2.0 of this standard have many things in common. For the rest
  19  * of the definitions, please refer to audio.h */
  20
  21 /*
  22  * bmControl field decoders
  23  *
  24  * From the USB Audio spec v2.0:
  25  *
  26  *   bmaControls() is a (ch+1)-element array of 4-byte bitmaps,
  27  *   each containing a set of bit pairs. If a Control is present,
  28  *   it must be Host readable. If a certain Control is not
  29  *   present then the bit pair must be set to 0b00.
  30  *   If a Control is present but read-only, the bit pair must be
  31  *   set to 0b01. If a Control is also Host programmable, the bit
  32  *   pair must be set to 0b11. The value 0b10 is not allowed.
  33  *
  34  */
  35
  36 static inline bool uac2_control_is_readable(u32 bmControls, u8 control)
  37 {
  38         return (bmControls >> (control * 2)) & 0x1;
  39 }
  40
  41 static inline bool uac2_control_is_writeable(u32 bmControls, u8 control)
  42 {
  43         return (bmControls >> (control * 2)) & 0x2;
  44 }
  45
  46 /* 4.7.2.1 Clock Source Descriptor */
  47
  48 struct uac_clock_source_descriptor {
  49         __u8 bLength;
  50         __u8 bDescriptorType;
  51         __u8 bDescriptorSubtype;
  52         __u8 bClockID;
  53         __u8 bmAttributes;
  54         __u8 bmControls;
  55         __u8 bAssocTerminal;
  56         __u8 iClockSource;
  57 } __attribute__((packed));
  58
  59 /* bmAttribute fields */
  60 #define UAC_CLOCK_SOURCE_TYPE_EXT       0x0
  61 #define UAC_CLOCK_SOURCE_TYPE_INT_FIXED 0x1
  62 #define UAC_CLOCK_SOURCE_TYPE_INT_VAR   0x2
  63 #define UAC_CLOCK_SOURCE_TYPE_INT_PROG  0x3
  64 #define UAC_CLOCK_SOURCE_SYNCED_TO_SOF  (1 << 2)
  65
  66 /* 4.7.2.2 Clock Source Descriptor */
  67
  68 struct uac_clock_selector_descriptor {
  69         __u8 bLength;
  70         __u8 bDescriptorType;
  71         __u8 bDescriptorSubtype;
  72         __u8 bClockID;
  73         __u8 bNrInPins;
  74         __u8 baCSourceID[];
  75         /* bmControls, bAssocTerminal and iClockSource omitted */
  76 } __attribute__((packed));
  77
  78 /* 4.7.2.3 Clock Multiplier Descriptor */
  79
  80 struct uac_clock_multiplier_descriptor {
  81         __u8 bLength;
  82         __u8 bDescriptorType;
  83         __u8 bDescriptorSubtype;
  84         __u8 bClockID;
  85         __u8 bCSourceID;
  86         __u8 bmControls;
  87         __u8 iClockMultiplier;
  88 } __attribute__((packed));
  89
  90 /* 4.7.2.4 Input terminal descriptor */
  91
  92 struct uac2_input_terminal_descriptor {
  93         __u8 bLength;
  94         __u8 bDescriptorType;
  95         __u8 bDescriptorSubtype;
  96         __u8 bTerminalID;
  97         __u16 wTerminalType;
  98         __u8 bAssocTerminal;
  99         __u8 bCSourceID;
 100         __u8 bNrChannels;
 101         __u32 bmChannelConfig;
 102         __u8 iChannelNames;
 103         __u16 bmControls;
 104         __u8 iTerminal;
 105 } __attribute__((packed));
 106
 107 /* 4.7.2.5 Output terminal descriptor */
 108
 109 struct uac2_output_terminal_descriptor {
 110         __u8 bLength;
 111         __u8 bDescriptorType;
 112         __u8 bDescriptorSubtype;
 113         __u8 bTerminalID;
 114         __u16 wTerminalType;
 115         __u8 bAssocTerminal;
 116         __u8 bSourceID;
 117         __u8 bCSourceID;
 118         __u16 bmControls;
 119         __u8 iTerminal;
 120 } __attribute__((packed));
 121
 122
 123
 124 /* 4.7.2.8 Feature Unit Descriptor */
 125
 126 struct uac2_feature_unit_descriptor {
 127         __u8 bLength;
 128         __u8 bDescriptorType;
 129         __u8 bDescriptorSubtype;
 130         __u8 bUnitID;
 131         __u8 bSourceID;
 132         /* bmaControls is actually u32,
 133          * but u8 is needed for the hybrid parser */
 134         __u8 bmaControls[0]; /* variable length */
 135 } __attribute__((packed));
 136
 137 /* 4.9.2 Class-Specific AS Interface Descriptor */
 138
 139 struct uac2_as_header_descriptor {
 140         __u8 bLength;
 141         __u8 bDescriptorType;
 142         __u8 bDescriptorSubtype;
 143         __u8 bTerminalLink;
 144         __u8 bmControls;
 145         __u8 bFormatType;
 146         __u32 bmFormats;
 147         __u8 bNrChannels;
 148         __u32 bmChannelConfig;
 149         __u8 iChannelNames;
 150 } __attribute__((packed));
 151
 152 /* 4.10.1.2 Class-Specific AS Isochronous Audio Data Endpoint Descriptor */
 153
 154 struct uac2_iso_endpoint_descriptor {
 155         __u8  bLength;                  /* in bytes: 8 */
 156         __u8  bDescriptorType;          /* USB_DT_CS_ENDPOINT */
 157         __u8  bDescriptorSubtype;       /* EP_GENERAL */
 158         __u8  bmAttributes;
 159         __u8  bmControls;
 160         __u8  bLockDelayUnits;
 161         __le16 wLockDelay;
 162 } __attribute__((packed));
 163
 164 #define UAC2_CONTROL_PITCH              (3 << 0)
 165 #define UAC2_CONTROL_DATA_OVERRUN       (3 << 2)
 166 #define UAC2_CONTROL_DATA_UNDERRUN      (3 << 4)
 167
 168 /* 6.1 Interrupt Data Message */
 169
 170 #define UAC2_INTERRUPT_DATA_MSG_VENDOR  (1 << 0)
 171 #define UAC2_INTERRUPT_DATA_MSG_EP      (1 << 1)
 172
 173 struct uac2_interrupt_data_msg {
 174         __u8 bInfo;
 175         __u8 bAttribute;
 176         __le16 wValue;
 177         __le16 wIndex;
 178 } __attribute__((packed));
 179
 180 /* A.7 Audio Function Category Codes */
 181 #define UAC2_FUNCTION_SUBCLASS_UNDEFINED        0x00
 182 #define UAC2_FUNCTION_DESKTOP_SPEAKER           0x01
 183 #define UAC2_FUNCTION_HOME_THEATER              0x02
 184 #define UAC2_FUNCTION_MICROPHONE                0x03
 185 #define UAC2_FUNCTION_HEADSET                   0x04
 186 #define UAC2_FUNCTION_TELEPHONE                 0x05
 187 #define UAC2_FUNCTION_CONVERTER                 0x06
 188 #define UAC2_FUNCTION_SOUND_RECORDER            0x07
 189 #define UAC2_FUNCTION_IO_BOX                    0x08
 190 #define UAC2_FUNCTION_MUSICAL_INSTRUMENT        0x09
 191 #define UAC2_FUNCTION_PRO_AUDIO                 0x0a
 192 #define UAC2_FUNCTION_AUDIO_VIDEO               0x0b
 193 #define UAC2_FUNCTION_CONTROL_PANEL             0x0c
 194 #define UAC2_FUNCTION_OTHER                     0xff
 195
 196 /* A.9 Audio Class-Specific AC Interface Descriptor Subtypes */
 197 /* see audio.h for the rest, which is identical to v1 */
 198 #define UAC2_EFFECT_UNIT                        0x07
 199 #define UAC2_PROCESSING_UNIT_V2         0x08
 200 #define UAC2_EXTENSION_UNIT_V2          0x09
 201 #define UAC2_CLOCK_SOURCE               0x0a
 202 #define UAC2_CLOCK_SELECTOR             0x0b
 203 #define UAC2_CLOCK_MULTIPLIER           0x0c
 204 #define UAC2_SAMPLE_RATE_CONVERTER      0x0d
 205
 206 /* A.10 Audio Class-Specific AS Interface Descriptor Subtypes */
 207 /* see audio.h for the rest, which is identical to v1 */
 208 #define UAC2_ENCODER                    0x03
 209 #define UAC2_DECODER                    0x04
 210
 211 /* A.11 Effect Unit Effect Types */
 212 #define UAC2_EFFECT_UNDEFINED           0x00
 213 #define UAC2_EFFECT_PARAM_EQ            0x01
 214 #define UAC2_EFFECT_REVERB              0x02
 215 #define UAC2_EFFECT_MOD_DELAY           0x03
 216 #define UAC2_EFFECT_DYN_RANGE_COMP      0x04
 217
 218 /* A.12 Processing Unit Process Types */
 219 #define UAC2_PROCESS_UNDEFINED          0x00
 220 #define UAC2_PROCESS_UP_DOWNMIX         0x01
 221 #define UAC2_PROCESS_DOLBY_PROLOCIC     0x02
 222 #define UAC2_PROCESS_STEREO_EXTENDER    0x03
 223
 224 /* A.14 Audio Class-Specific Request Codes */
 225 #define UAC2_CS_CUR                     0x01
 226 #define UAC2_CS_RANGE                   0x02
 227 #define UAC2_CS_MEM                     0x03
 228
 229 /* A.15 Encoder Type Codes */
 230 #define UAC2_ENCODER_UNDEFINED          0x00
 231 #define UAC2_ENCODER_OTHER              0x01
 232 #define UAC2_ENCODER_MPEG               0x02
 233 #define UAC2_ENCODER_AC3                0x03
 234 #define UAC2_ENCODER_WMA                0x04
 235 #define UAC2_ENCODER_DTS                0x05
 236
 237 /* A.16 Decoder Type Codes */
 238 #define UAC2_DECODER_UNDEFINED          0x00
 239 #define UAC2_DECODER_OTHER              0x01
 240 #define UAC2_DECODER_MPEG               0x02
 241 #define UAC2_DECODER_AC3                0x03
 242 #define UAC2_DECODER_WMA                0x04
 243 #define UAC2_DECODER_DTS                0x05
 244
 245 /* A.17.1 Clock Source Control Selectors */
 246 #define UAC2_CS_UNDEFINED               0x00
 247 #define UAC2_CS_CONTROL_SAM_FREQ        0x01
 248 #define UAC2_CS_CONTROL_CLOCK_VALID     0x02
 249
 250 /* A.17.2 Clock Selector Control Selectors */
 251 #define UAC2_CX_UNDEFINED               0x00
 252 #define UAC2_CX_CLOCK_SELECTOR          0x01
 253
 254 /* A.17.3 Clock Multiplier Control Selectors */
 255 #define UAC2_CM_UNDEFINED               0x00
 256 #define UAC2_CM_NUMERATOR               0x01
 257 #define UAC2_CM_DENOMINTATOR            0x02
 258
 259 /* A.17.4 Terminal Control Selectors */
 260 #define UAC2_TE_UNDEFINED               0x00
 261 #define UAC2_TE_COPY_PROTECT            0x01
 262 #define UAC2_TE_CONNECTOR               0x02
 263 #define UAC2_TE_OVERLOAD                0x03
 264 #define UAC2_TE_CLUSTER                 0x04
 265 #define UAC2_TE_UNDERFLOW               0x05
 266 #define UAC2_TE_OVERFLOW                0x06
 267 #define UAC2_TE_LATENCY                 0x07
 268
 269 /* A.17.5 Mixer Control Selectors */
 270 #define UAC2_MU_UNDEFINED               0x00
 271 #define UAC2_MU_MIXER                   0x01
 272 #define UAC2_MU_CLUSTER                 0x02
 273 #define UAC2_MU_UNDERFLOW               0x03
 274 #define UAC2_MU_OVERFLOW                0x04
 275 #define UAC2_MU_LATENCY                 0x05
 276
 277 /* A.17.6 Selector Control Selectors */
 278 #define UAC2_SU_UNDEFINED               0x00
 279 #define UAC2_SU_SELECTOR                0x01
 280 #define UAC2_SU_LATENCY                 0x02
 281
 282 /* A.17.7 Feature Unit Control Selectors */
 283 /* see audio.h for the rest, which is identical to v1 */
 284 #define UAC2_FU_INPUT_GAIN              0x0b
 285 #define UAC2_FU_INPUT_GAIN_PAD          0x0c
 286 #define UAC2_FU_PHASE_INVERTER          0x0d
 287 #define UAC2_FU_UNDERFLOW               0x0e
 288 #define UAC2_FU_OVERFLOW                0x0f
 289 #define UAC2_FU_LATENCY                 0x10
 290
 291 /* A.17.8.1 Parametric Equalizer Section Effect Unit Control Selectors */
 292 #define UAC2_PE_UNDEFINED               0x00
 293 #define UAC2_PE_ENABLE                  0x01
 294 #define UAC2_PE_CENTERFREQ              0x02
 295 #define UAC2_PE_QFACTOR                 0x03
 296 #define UAC2_PE_GAIN                    0x04
 297 #define UAC2_PE_UNDERFLOW               0x05
 298 #define UAC2_PE_OVERFLOW                0x06
 299 #define UAC2_PE_LATENCY                 0x07
 300
 301 /* A.17.8.2 Reverberation Effect Unit Control Selectors */
 302 #define UAC2_RV_UNDEFINED               0x00
 303 #define UAC2_RV_ENABLE                  0x01
 304 #define UAC2_RV_TYPE                    0x02
 305 #define UAC2_RV_LEVEL                   0x03
 306 #define UAC2_RV_TIME                    0x04
 307 #define UAC2_RV_FEEDBACK                0x05
 308 #define UAC2_RV_PREDELAY                0x06
 309 #define UAC2_RV_DENSITY                 0x07
 310 #define UAC2_RV_HIFREQ_ROLLOFF          0x08
 311 #define UAC2_RV_UNDERFLOW               0x09
 312 #define UAC2_RV_OVERFLOW                0x0a
 313 #define UAC2_RV_LATENCY                 0x0b
 314
 315 /* A.17.8.3 Modulation Delay Effect Control Selectors */
 316 #define UAC2_MD_UNDEFINED               0x00
 317 #define UAC2_MD_ENABLE                  0x01
 318 #define UAC2_MD_BALANCE                 0x02
 319 #define UAC2_MD_RATE                    0x03
 320 #define UAC2_MD_DEPTH                   0x04
 321 #define UAC2_MD_TIME                    0x05
 322 #define UAC2_MD_FEEDBACK                0x06
 323 #define UAC2_MD_UNDERFLOW               0x07
 324 #define UAC2_MD_OVERFLOW                0x08
 325 #define UAC2_MD_LATENCY                 0x09
 326
 327 /* A.17.8.4 Dynamic Range Compressor Effect Unit Control Selectors */
 328 #define UAC2_DR_UNDEFINED               0x00
 329 #define UAC2_DR_ENABLE                  0x01
 330 #define UAC2_DR_COMPRESSION_RATE        0x02
 331 #define UAC2_DR_MAXAMPL                 0x03
 332 #define UAC2_DR_THRESHOLD               0x04
 333 #define UAC2_DR_ATTACK_TIME             0x05
 334 #define UAC2_DR_RELEASE_TIME            0x06
 335 #define UAC2_DR_UNDEFLOW                0x07
 336 #define UAC2_DR_OVERFLOW                0x08
 337 #define UAC2_DR_LATENCY                 0x09
 338
 339 /* A.17.9.1 Up/Down-mix Processing Unit Control Selectors */
 340 #define UAC2_UD_UNDEFINED               0x00
 341 #define UAC2_UD_ENABLE                  0x01
 342 #define UAC2_UD_MODE_SELECT             0x02
 343 #define UAC2_UD_CLUSTER                 0x03
 344 #define UAC2_UD_UNDERFLOW               0x04
 345 #define UAC2_UD_OVERFLOW                0x05
 346 #define UAC2_UD_LATENCY                 0x06
 347
 348 /* A.17.9.2 Dolby Prologic[tm] Processing Unit Control Selectors */
 349 #define UAC2_DP_UNDEFINED               0x00
 350 #define UAC2_DP_ENABLE                  0x01
 351 #define UAC2_DP_MODE_SELECT             0x02
 352 #define UAC2_DP_CLUSTER                 0x03
 353 #define UAC2_DP_UNDERFFLOW              0x04
 354 #define UAC2_DP_OVERFLOW                0x05
 355 #define UAC2_DP_LATENCY                 0x06
 356
 357 /* A.17.9.3 Stereo Expander Processing Unit Control Selectors */
 358 #define UAC2_ST_EXT_UNDEFINED           0x00
 359 #define UAC2_ST_EXT_ENABLE              0x01
 360 #define UAC2_ST_EXT_WIDTH               0x02
 361 #define UAC2_ST_EXT_UNDEFLOW            0x03
 362 #define UAC2_ST_EXT_OVERFLOW            0x04
 363 #define UAC2_ST_EXT_LATENCY             0x05
 364
 365 /* A.17.10 Extension Unit Control Selectors */
 366 #define UAC2_XU_UNDEFINED               0x00
 367 #define UAC2_XU_ENABLE                  0x01
 368 #define UAC2_XU_CLUSTER                 0x02
 369 #define UAC2_XU_UNDERFLOW               0x03
 370 #define UAC2_XU_OVERFLOW                0x04
 371 #define UAC2_XU_LATENCY                 0x05
 372
 373 /* A.17.11 AudioStreaming Interface Control Selectors */
 374 #define UAC2_AS_UNDEFINED               0x00
 375 #define UAC2_AS_ACT_ALT_SETTING         0x01
 376 #define UAC2_AS_VAL_ALT_SETTINGS        0x02
 377 #define UAC2_AS_AUDIO_DATA_FORMAT       0x03
 378
 379 /* A.17.12 Encoder Control Selectors */
 380 #define UAC2_EN_UNDEFINED               0x00
 381 #define UAC2_EN_BIT_RATE                0x01
 382 #define UAC2_EN_QUALITY                 0x02
 383 #define UAC2_EN_VBR                     0x03
 384 #define UAC2_EN_TYPE                    0x04
 385 #define UAC2_EN_UNDERFLOW               0x05
 386 #define UAC2_EN_OVERFLOW                0x06
 387 #define UAC2_EN_ENCODER_ERROR           0x07
 388 #define UAC2_EN_PARAM1                  0x08
 389 #define UAC2_EN_PARAM2                  0x09
 390 #define UAC2_EN_PARAM3                  0x0a
 391 #define UAC2_EN_PARAM4                  0x0b
 392 #define UAC2_EN_PARAM5                  0x0c
 393 #define UAC2_EN_PARAM6                  0x0d
 394 #define UAC2_EN_PARAM7                  0x0e
 395 #define UAC2_EN_PARAM8                  0x0f
 396
 397 /* A.17.13.1 MPEG Decoder Control Selectors */
 398 #define UAC2_MPEG_UNDEFINED             0x00
 399 #define UAC2_MPEG_DUAL_CHANNEL          0x01
 400 #define UAC2_MPEG_SECOND_STEREO         0x02
 401 #define UAC2_MPEG_MULTILINGUAL          0x03
 402 #define UAC2_MPEG_DYN_RANGE             0x04
 403 #define UAC2_MPEG_SCALING               0x05
 404 #define UAC2_MPEG_HILO_SCALING          0x06
 405 #define UAC2_MPEG_UNDERFLOW             0x07
 406 #define UAC2_MPEG_OVERFLOW              0x08
 407 #define UAC2_MPEG_DECODER_ERROR         0x09
 408
 409 /* A17.13.2 AC3 Decoder Control Selectors */
 410 #define UAC2_AC3_UNDEFINED              0x00
 411 #define UAC2_AC3_MODE                   0x01
 412 #define UAC2_AC3_DYN_RANGE              0x02
 413 #define UAC2_AC3_SCALING                0x03
 414 #define UAC2_AC3_HILO_SCALING           0x04
 415 #define UAC2_AC3_UNDERFLOW              0x05
 416 #define UAC2_AC3_OVERFLOW               0x06
 417 #define UAC2_AC3_DECODER_ERROR          0x07
 418
 419 /* A17.13.3 WMA Decoder Control Selectors */
 420 #define UAC2_WMA_UNDEFINED              0x00
 421 #define UAC2_WMA_UNDERFLOW              0x01
 422 #define UAC2_WMA_OVERFLOW               0x02
 423 #define UAC2_WMA_DECODER_ERROR          0x03
 424
 425 /* A17.13.4 DTS Decoder Control Selectors */
 426 #define UAC2_DTS_UNDEFINED              0x00
 427 #define UAC2_DTS_UNDERFLOW              0x01
 428 #define UAC2_DTS_OVERFLOW               0x02
 429 #define UAC2_DTS_DECODER_ERROR          0x03
 430
 431 /* A17.14 Endpoint Control Selectors */
 432 #define UAC2_EP_CS_UNDEFINED            0x00
 433 #define UAC2_EP_CS_PITCH                0x01
 434 #define UAC2_EP_CS_DATA_OVERRUN         0x02
 435 #define UAC2_EP_CS_DATA_UNDERRUN        0x03
 436
 437 #endif /* __LINUX_USB_AUDIO_V2_H */
 438