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 Class-Specific AC Interface Descriptor */
  47 struct uac2_ac_header_descriptor {
  48         __u8  bLength;                  /* 9 */
  49         __u8  bDescriptorType;          /* USB_DT_CS_INTERFACE */
  50         __u8  bDescriptorSubtype;       /* UAC_MS_HEADER */
  51         __le16 bcdADC;                  /* 0x0200 */
  52         __u8  bCategory;
  53         __le16 wTotalLength;            /* includes Unit and Terminal desc. */
  54         __u8  bmControls;
  55 } __packed;
  56
  57 /* 2.3.1.6 Type I Format Type Descriptor (Frmts20 final.pdf)*/
  58 struct uac2_format_type_i_descriptor {
  59         __u8  bLength;                  /* in bytes: 6 */
  60         __u8  bDescriptorType;          /* USB_DT_CS_INTERFACE */
  61         __u8  bDescriptorSubtype;       /* FORMAT_TYPE */
  62         __u8  bFormatType;              /* FORMAT_TYPE_1 */
  63         __u8  bSubslotSize;             /* {1,2,3,4} */
  64         __u8  bBitResolution;
  65 } __packed;
  66
  67 /* 4.7.2.1 Clock Source Descriptor */
  68
  69 struct uac_clock_source_descriptor {
  70         __u8 bLength;
  71         __u8 bDescriptorType;
  72         __u8 bDescriptorSubtype;
  73         __u8 bClockID;
  74         __u8 bmAttributes;
  75         __u8 bmControls;
  76         __u8 bAssocTerminal;
  77         __u8 iClockSource;
  78 } __attribute__((packed));
  79
  80 /* bmAttribute fields */
  81 #define UAC_CLOCK_SOURCE_TYPE_EXT       0x0
  82 #define UAC_CLOCK_SOURCE_TYPE_INT_FIXED 0x1
  83 #define UAC_CLOCK_SOURCE_TYPE_INT_VAR   0x2
  84 #define UAC_CLOCK_SOURCE_TYPE_INT_PROG  0x3
  85 #define UAC_CLOCK_SOURCE_SYNCED_TO_SOF  (1 << 2)
  86
  87 /* 4.7.2.2 Clock Source Descriptor */
  88
  89 struct uac_clock_selector_descriptor {
  90         __u8 bLength;
  91         __u8 bDescriptorType;
  92         __u8 bDescriptorSubtype;
  93         __u8 bClockID;
  94         __u8 bNrInPins;
  95         __u8 baCSourceID[];
  96         /* bmControls, bAssocTerminal and iClockSource omitted */
  97 } __attribute__((packed));
  98
  99 /* 4.7.2.3 Clock Multiplier Descriptor */
 100
 101 struct uac_clock_multiplier_descriptor {
 102         __u8 bLength;
 103         __u8 bDescriptorType;
 104         __u8 bDescriptorSubtype;
 105         __u8 bClockID;
 106         __u8 bCSourceID;
 107         __u8 bmControls;
 108         __u8 iClockMultiplier;
 109 } __attribute__((packed));
 110
 111 /* 4.7.2.4 Input terminal descriptor */
 112
 113 struct uac2_input_terminal_descriptor {
 114         __u8 bLength;
 115         __u8 bDescriptorType;
 116         __u8 bDescriptorSubtype;
 117         __u8 bTerminalID;
 118         __le16 wTerminalType;
 119         __u8 bAssocTerminal;
 120         __u8 bCSourceID;
 121         __u8 bNrChannels;
 122         __le32 bmChannelConfig;
 123         __u8 iChannelNames;
 124         __le16 bmControls;
 125         __u8 iTerminal;
 126 } __attribute__((packed));
 127
 128 /* 4.7.2.5 Output terminal descriptor */
 129
 130 struct uac2_output_terminal_descriptor {
 131         __u8 bLength;
 132         __u8 bDescriptorType;
 133         __u8 bDescriptorSubtype;
 134         __u8 bTerminalID;
 135         __le16 wTerminalType;
 136         __u8 bAssocTerminal;
 137         __u8 bSourceID;
 138         __u8 bCSourceID;
 139         __le16 bmControls;
 140         __u8 iTerminal;
 141 } __attribute__((packed));
 142
 143
 144
 145 /* 4.7.2.8 Feature Unit Descriptor */
 146
 147 struct uac2_feature_unit_descriptor {
 148         __u8 bLength;
 149         __u8 bDescriptorType;
 150         __u8 bDescriptorSubtype;
 151         __u8 bUnitID;
 152         __u8 bSourceID;
 153         /* bmaControls is actually u32,
 154          * but u8 is needed for the hybrid parser */
 155         __u8 bmaControls[0]; /* variable length */
 156 } __attribute__((packed));
 157
 158 /* 4.9.2 Class-Specific AS Interface Descriptor */
 159
 160 struct uac2_as_header_descriptor {
 161         __u8 bLength;
 162         __u8 bDescriptorType;
 163         __u8 bDescriptorSubtype;
 164         __u8 bTerminalLink;
 165         __u8 bmControls;
 166         __u8 bFormatType;
 167         __le32 bmFormats;
 168         __u8 bNrChannels;
 169         __le32 bmChannelConfig;
 170         __u8 iChannelNames;
 171 } __attribute__((packed));
 172
 173 #define UAC2_FORMAT_TYPE_I_RAW_DATA     (1 << 31)
 174
 175 /* 4.10.1.2 Class-Specific AS Isochronous Audio Data Endpoint Descriptor */
 176
 177 struct uac2_iso_endpoint_descriptor {
 178         __u8  bLength;                  /* in bytes: 8 */
 179         __u8  bDescriptorType;          /* USB_DT_CS_ENDPOINT */
 180         __u8  bDescriptorSubtype;       /* EP_GENERAL */
 181         __u8  bmAttributes;
 182         __u8  bmControls;
 183         __u8  bLockDelayUnits;
 184         __le16 wLockDelay;
 185 } __attribute__((packed));
 186
 187 #define UAC2_CONTROL_PITCH              (3 << 0)
 188 #define UAC2_CONTROL_DATA_OVERRUN       (3 << 2)
 189 #define UAC2_CONTROL_DATA_UNDERRUN      (3 << 4)
 190
 191 /* 6.1 Interrupt Data Message */
 192
 193 #define UAC2_INTERRUPT_DATA_MSG_VENDOR  (1 << 0)
 194 #define UAC2_INTERRUPT_DATA_MSG_EP      (1 << 1)
 195
 196 struct uac2_interrupt_data_msg {
 197         __u8 bInfo;
 198         __u8 bAttribute;
 199         __le16 wValue;
 200         __le16 wIndex;
 201 } __attribute__((packed));
 202
 203 /* A.7 Audio Function Category Codes */
 204 #define UAC2_FUNCTION_SUBCLASS_UNDEFINED        0x00
 205 #define UAC2_FUNCTION_DESKTOP_SPEAKER           0x01
 206 #define UAC2_FUNCTION_HOME_THEATER              0x02
 207 #define UAC2_FUNCTION_MICROPHONE                0x03
 208 #define UAC2_FUNCTION_HEADSET                   0x04
 209 #define UAC2_FUNCTION_TELEPHONE                 0x05
 210 #define UAC2_FUNCTION_CONVERTER                 0x06
 211 #define UAC2_FUNCTION_SOUND_RECORDER            0x07
 212 #define UAC2_FUNCTION_IO_BOX                    0x08
 213 #define UAC2_FUNCTION_MUSICAL_INSTRUMENT        0x09
 214 #define UAC2_FUNCTION_PRO_AUDIO                 0x0a
 215 #define UAC2_FUNCTION_AUDIO_VIDEO               0x0b
 216 #define UAC2_FUNCTION_CONTROL_PANEL             0x0c
 217 #define UAC2_FUNCTION_OTHER                     0xff
 218
 219 /* A.9 Audio Class-Specific AC Interface Descriptor Subtypes */
 220 /* see audio.h for the rest, which is identical to v1 */
 221 #define UAC2_EFFECT_UNIT                        0x07
 222 #define UAC2_PROCESSING_UNIT_V2         0x08
 223 #define UAC2_EXTENSION_UNIT_V2          0x09
 224 #define UAC2_CLOCK_SOURCE               0x0a
 225 #define UAC2_CLOCK_SELECTOR             0x0b
 226 #define UAC2_CLOCK_MULTIPLIER           0x0c
 227 #define UAC2_SAMPLE_RATE_CONVERTER      0x0d
 228
 229 /* A.10 Audio Class-Specific AS Interface Descriptor Subtypes */
 230 /* see audio.h for the rest, which is identical to v1 */
 231 #define UAC2_ENCODER                    0x03
 232 #define UAC2_DECODER                    0x04
 233
 234 /* A.11 Effect Unit Effect Types */
 235 #define UAC2_EFFECT_UNDEFINED           0x00
 236 #define UAC2_EFFECT_PARAM_EQ            0x01
 237 #define UAC2_EFFECT_REVERB              0x02
 238 #define UAC2_EFFECT_MOD_DELAY           0x03
 239 #define UAC2_EFFECT_DYN_RANGE_COMP      0x04
 240
 241 /* A.12 Processing Unit Process Types */
 242 #define UAC2_PROCESS_UNDEFINED          0x00
 243 #define UAC2_PROCESS_UP_DOWNMIX         0x01
 244 #define UAC2_PROCESS_DOLBY_PROLOCIC     0x02
 245 #define UAC2_PROCESS_STEREO_EXTENDER    0x03
 246
 247 /* A.14 Audio Class-Specific Request Codes */
 248 #define UAC2_CS_CUR                     0x01
 249 #define UAC2_CS_RANGE                   0x02
 250 #define UAC2_CS_MEM                     0x03
 251
 252 /* A.15 Encoder Type Codes */
 253 #define UAC2_ENCODER_UNDEFINED          0x00
 254 #define UAC2_ENCODER_OTHER              0x01
 255 #define UAC2_ENCODER_MPEG               0x02
 256 #define UAC2_ENCODER_AC3                0x03
 257 #define UAC2_ENCODER_WMA                0x04
 258 #define UAC2_ENCODER_DTS                0x05
 259
 260 /* A.16 Decoder Type Codes */
 261 #define UAC2_DECODER_UNDEFINED          0x00
 262 #define UAC2_DECODER_OTHER              0x01
 263 #define UAC2_DECODER_MPEG               0x02
 264 #define UAC2_DECODER_AC3                0x03
 265 #define UAC2_DECODER_WMA                0x04
 266 #define UAC2_DECODER_DTS                0x05
 267
 268 /* A.17.1 Clock Source Control Selectors */
 269 #define UAC2_CS_UNDEFINED               0x00
 270 #define UAC2_CS_CONTROL_SAM_FREQ        0x01
 271 #define UAC2_CS_CONTROL_CLOCK_VALID     0x02
 272
 273 /* A.17.2 Clock Selector Control Selectors */
 274 #define UAC2_CX_UNDEFINED               0x00
 275 #define UAC2_CX_CLOCK_SELECTOR          0x01
 276
 277 /* A.17.3 Clock Multiplier Control Selectors */
 278 #define UAC2_CM_UNDEFINED               0x00
 279 #define UAC2_CM_NUMERATOR               0x01
 280 #define UAC2_CM_DENOMINTATOR            0x02
 281
 282 /* A.17.4 Terminal Control Selectors */
 283 #define UAC2_TE_UNDEFINED               0x00
 284 #define UAC2_TE_COPY_PROTECT            0x01
 285 #define UAC2_TE_CONNECTOR               0x02
 286 #define UAC2_TE_OVERLOAD                0x03
 287 #define UAC2_TE_CLUSTER                 0x04
 288 #define UAC2_TE_UNDERFLOW               0x05
 289 #define UAC2_TE_OVERFLOW                0x06
 290 #define UAC2_TE_LATENCY                 0x07
 291
 292 /* A.17.5 Mixer Control Selectors */
 293 #define UAC2_MU_UNDEFINED               0x00
 294 #define UAC2_MU_MIXER                   0x01
 295 #define UAC2_MU_CLUSTER                 0x02
 296 #define UAC2_MU_UNDERFLOW               0x03
 297 #define UAC2_MU_OVERFLOW                0x04
 298 #define UAC2_MU_LATENCY                 0x05
 299
 300 /* A.17.6 Selector Control Selectors */
 301 #define UAC2_SU_UNDEFINED               0x00
 302 #define UAC2_SU_SELECTOR                0x01
 303 #define UAC2_SU_LATENCY                 0x02
 304
 305 /* A.17.7 Feature Unit Control Selectors */
 306 /* see audio.h for the rest, which is identical to v1 */
 307 #define UAC2_FU_INPUT_GAIN              0x0b
 308 #define UAC2_FU_INPUT_GAIN_PAD          0x0c
 309 #define UAC2_FU_PHASE_INVERTER          0x0d
 310 #define UAC2_FU_UNDERFLOW               0x0e
 311 #define UAC2_FU_OVERFLOW                0x0f
 312 #define UAC2_FU_LATENCY                 0x10
 313
 314 /* A.17.8.1 Parametric Equalizer Section Effect Unit Control Selectors */
 315 #define UAC2_PE_UNDEFINED               0x00
 316 #define UAC2_PE_ENABLE                  0x01
 317 #define UAC2_PE_CENTERFREQ              0x02
 318 #define UAC2_PE_QFACTOR                 0x03
 319 #define UAC2_PE_GAIN                    0x04
 320 #define UAC2_PE_UNDERFLOW               0x05
 321 #define UAC2_PE_OVERFLOW                0x06
 322 #define UAC2_PE_LATENCY                 0x07
 323
 324 /* A.17.8.2 Reverberation Effect Unit Control Selectors */
 325 #define UAC2_RV_UNDEFINED               0x00
 326 #define UAC2_RV_ENABLE                  0x01
 327 #define UAC2_RV_TYPE                    0x02
 328 #define UAC2_RV_LEVEL                   0x03
 329 #define UAC2_RV_TIME                    0x04
 330 #define UAC2_RV_FEEDBACK                0x05
 331 #define UAC2_RV_PREDELAY                0x06
 332 #define UAC2_RV_DENSITY                 0x07
 333 #define UAC2_RV_HIFREQ_ROLLOFF          0x08
 334 #define UAC2_RV_UNDERFLOW               0x09
 335 #define UAC2_RV_OVERFLOW                0x0a
 336 #define UAC2_RV_LATENCY                 0x0b
 337
 338 /* A.17.8.3 Modulation Delay Effect Control Selectors */
 339 #define UAC2_MD_UNDEFINED               0x00
 340 #define UAC2_MD_ENABLE                  0x01
 341 #define UAC2_MD_BALANCE                 0x02
 342 #define UAC2_MD_RATE                    0x03
 343 #define UAC2_MD_DEPTH                   0x04
 344 #define UAC2_MD_TIME                    0x05
 345 #define UAC2_MD_FEEDBACK                0x06
 346 #define UAC2_MD_UNDERFLOW               0x07
 347 #define UAC2_MD_OVERFLOW                0x08
 348 #define UAC2_MD_LATENCY                 0x09
 349
 350 /* A.17.8.4 Dynamic Range Compressor Effect Unit Control Selectors */
 351 #define UAC2_DR_UNDEFINED               0x00
 352 #define UAC2_DR_ENABLE                  0x01
 353 #define UAC2_DR_COMPRESSION_RATE        0x02
 354 #define UAC2_DR_MAXAMPL                 0x03
 355 #define UAC2_DR_THRESHOLD               0x04
 356 #define UAC2_DR_ATTACK_TIME             0x05
 357 #define UAC2_DR_RELEASE_TIME            0x06
 358 #define UAC2_DR_UNDEFLOW                0x07
 359 #define UAC2_DR_OVERFLOW                0x08
 360 #define UAC2_DR_LATENCY                 0x09
 361
 362 /* A.17.9.1 Up/Down-mix Processing Unit Control Selectors */
 363 #define UAC2_UD_UNDEFINED               0x00
 364 #define UAC2_UD_ENABLE                  0x01
 365 #define UAC2_UD_MODE_SELECT             0x02
 366 #define UAC2_UD_CLUSTER                 0x03
 367 #define UAC2_UD_UNDERFLOW               0x04
 368 #define UAC2_UD_OVERFLOW                0x05
 369 #define UAC2_UD_LATENCY                 0x06
 370
 371 /* A.17.9.2 Dolby Prologic[tm] Processing Unit Control Selectors */
 372 #define UAC2_DP_UNDEFINED               0x00
 373 #define UAC2_DP_ENABLE                  0x01
 374 #define UAC2_DP_MODE_SELECT             0x02
 375 #define UAC2_DP_CLUSTER                 0x03
 376 #define UAC2_DP_UNDERFFLOW              0x04
 377 #define UAC2_DP_OVERFLOW                0x05
 378 #define UAC2_DP_LATENCY                 0x06
 379
 380 /* A.17.9.3 Stereo Expander Processing Unit Control Selectors */
 381 #define UAC2_ST_EXT_UNDEFINED           0x00
 382 #define UAC2_ST_EXT_ENABLE              0x01
 383 #define UAC2_ST_EXT_WIDTH               0x02
 384 #define UAC2_ST_EXT_UNDEFLOW            0x03
 385 #define UAC2_ST_EXT_OVERFLOW            0x04
 386 #define UAC2_ST_EXT_LATENCY             0x05
 387
 388 /* A.17.10 Extension Unit Control Selectors */
 389 #define UAC2_XU_UNDEFINED               0x00
 390 #define UAC2_XU_ENABLE                  0x01
 391 #define UAC2_XU_CLUSTER                 0x02
 392 #define UAC2_XU_UNDERFLOW               0x03
 393 #define UAC2_XU_OVERFLOW                0x04
 394 #define UAC2_XU_LATENCY                 0x05
 395
 396 /* A.17.11 AudioStreaming Interface Control Selectors */
 397 #define UAC2_AS_UNDEFINED               0x00
 398 #define UAC2_AS_ACT_ALT_SETTING         0x01
 399 #define UAC2_AS_VAL_ALT_SETTINGS        0x02
 400 #define UAC2_AS_AUDIO_DATA_FORMAT       0x03
 401
 402 /* A.17.12 Encoder Control Selectors */
 403 #define UAC2_EN_UNDEFINED               0x00
 404 #define UAC2_EN_BIT_RATE                0x01
 405 #define UAC2_EN_QUALITY                 0x02
 406 #define UAC2_EN_VBR                     0x03
 407 #define UAC2_EN_TYPE                    0x04
 408 #define UAC2_EN_UNDERFLOW               0x05
 409 #define UAC2_EN_OVERFLOW                0x06
 410 #define UAC2_EN_ENCODER_ERROR           0x07
 411 #define UAC2_EN_PARAM1                  0x08
 412 #define UAC2_EN_PARAM2                  0x09
 413 #define UAC2_EN_PARAM3                  0x0a
 414 #define UAC2_EN_PARAM4                  0x0b
 415 #define UAC2_EN_PARAM5                  0x0c
 416 #define UAC2_EN_PARAM6                  0x0d
 417 #define UAC2_EN_PARAM7                  0x0e
 418 #define UAC2_EN_PARAM8                  0x0f
 419
 420 /* A.17.13.1 MPEG Decoder Control Selectors */
 421 #define UAC2_MPEG_UNDEFINED             0x00
 422 #define UAC2_MPEG_DUAL_CHANNEL          0x01
 423 #define UAC2_MPEG_SECOND_STEREO         0x02
 424 #define UAC2_MPEG_MULTILINGUAL          0x03
 425 #define UAC2_MPEG_DYN_RANGE             0x04
 426 #define UAC2_MPEG_SCALING               0x05
 427 #define UAC2_MPEG_HILO_SCALING          0x06
 428 #define UAC2_MPEG_UNDERFLOW             0x07
 429 #define UAC2_MPEG_OVERFLOW              0x08
 430 #define UAC2_MPEG_DECODER_ERROR         0x09
 431
 432 /* A17.13.2 AC3 Decoder Control Selectors */
 433 #define UAC2_AC3_UNDEFINED              0x00
 434 #define UAC2_AC3_MODE                   0x01
 435 #define UAC2_AC3_DYN_RANGE              0x02
 436 #define UAC2_AC3_SCALING                0x03
 437 #define UAC2_AC3_HILO_SCALING           0x04
 438 #define UAC2_AC3_UNDERFLOW              0x05
 439 #define UAC2_AC3_OVERFLOW               0x06
 440 #define UAC2_AC3_DECODER_ERROR          0x07
 441
 442 /* A17.13.3 WMA Decoder Control Selectors */
 443 #define UAC2_WMA_UNDEFINED              0x00
 444 #define UAC2_WMA_UNDERFLOW              0x01
 445 #define UAC2_WMA_OVERFLOW               0x02
 446 #define UAC2_WMA_DECODER_ERROR          0x03
 447
 448 /* A17.13.4 DTS Decoder Control Selectors */
 449 #define UAC2_DTS_UNDEFINED              0x00
 450 #define UAC2_DTS_UNDERFLOW              0x01
 451 #define UAC2_DTS_OVERFLOW               0x02
 452 #define UAC2_DTS_DECODER_ERROR          0x03
 453
 454 /* A17.14 Endpoint Control Selectors */
 455 #define UAC2_EP_CS_UNDEFINED            0x00
 456 #define UAC2_EP_CS_PITCH                0x01
 457 #define UAC2_EP_CS_DATA_OVERRUN         0x02
 458 #define UAC2_EP_CS_DATA_UNDERRUN        0x03
 459
 460 #endif /* __LINUX_USB_AUDIO_V2_H */
 461