headers/os/drivers/usb/USB_audio.h

   1 #ifndef USB_AUDIO_H
   2 #define USB_AUDIO_H
   3
   4 // (Partial) USB Device Class Definition for Audio Devices
   5 // R1: Release 1.0 March 18, 1998
   6 // R2: Release 2.0 May 31, 2006
   7
   8 #include <SupportDefs.h>
   9
  10 #define USB_AUDIO_DEVICE_CLASS                  0x01
  11 #define USB_AUDIO_CLASS_VERSION                 0x0100
  12
  13 enum {
  14         USB_AUDIO_INTERFACE_AUDIO_CLASS         = 0x01
  15 };
  16
  17 enum { // Audio Interface Subclasses
  18         USB_AUDIO_INTERFACE_UNDEFINED_SUBCLASS =        0x00,
  19         USB_AUDIO_INTERFACE_AUDIOCONTROL_SUBCLASS =     0x01,
  20         USB_AUDIO_INTERFACE_AUDIOSTREAMING_SUBCLASS,
  21         USB_AUDIO_INTERFACE_MIDISTREAMING_SUBCLASS
  22 };
  23
  24 enum { // Audio Interface Protocol Codes
  25         USB_AUDIO_PROTOCOL_UNDEFINED =  0x00
  26 };
  27
  28 enum { // Audio Interface Class-Specific Descriptor Types
  29         USB_AUDIO_CS_UNDEFINED                          = 0x20,
  30         USB_AUDIO_CS_DEVICE                                     = 0x21,
  31         USB_AUDIO_CS_CONFIGURATION                      = 0x22,
  32         USB_AUDIO_CS_STRING                                     = 0x23,
  33         USB_AUDIO_CS_INTERFACE                          = 0x24,
  34         USB_AUDIO_CS_ENDPOINT                           = 0x25
  35 };
  36
  37
  38 enum { // Audio Class-Specific AudioControl Interface descriptor subtypes
  39         USB_AUDIO_AC_DESCRIPTOR_UNDEFINED       = 0x00,
  40         USB_AUDIO_AC_HEADER                                     = 0x01,
  41         USB_AUDIO_AC_INPUT_TERMINAL                     = 0x02,
  42         USB_AUDIO_AC_OUTPUT_TERMINAL            = 0x03,
  43         USB_AUDIO_AC_MIXER_UNIT                         = 0x04,
  44         USB_AUDIO_AC_SELECTOR_UNIT                      = 0x05,
  45         USB_AUDIO_AC_FEATURE_UNIT                       = 0x06,
  46         USB_AUDIO_AC_PROCESSING_UNIT            = 0x07,
  47         USB_AUDIO_AC_EXTENSION_UNIT                     = 0x08,
  48         USB_AUDIO_AC_EFFECT_UNIT_R2                     = 0x07,
  49         USB_AUDIO_AC_PROCESSING_UNIT_R2         = 0x08,
  50         USB_AUDIO_AC_EXTENSION_UNIT_R2          = 0x09,
  51         USB_AUDIO_AC_CLOCK_SOURCE_R2            = 0x0A,
  52         USB_AUDIO_AC_CLOCK_SELECTOR_R2          = 0x0B,
  53         USB_AUDIO_AC_CLOCK_MULTIPLIER_R2        = 0x0C,
  54         USB_AUDIO_AC_SAMPLE_RATE_CONVERTER_R2 = 0x0D
  55 };
  56
  57
  58 // Class Specific Audio Control Interface Header
  59 // R1: Table 4-2 p.37 / R2: Table 4-5 p.48
  60 typedef struct {
  61         uint8   length;
  62         uint8   descriptor_type;                // USB_AUDIO_CS_INTERFACE
  63         uint8   descriptor_subtype;     // USB_AUDIO_AC_HEADER
  64         uint16  bcd_release_no;
  65         union {
  66                 struct {
  67                         uint16  total_length;
  68                         uint8   in_collection;
  69                         uint8   interface_numbers[0];
  70                 } _PACKED r1;
  71
  72                 struct {
  73                         uint8   function_category;
  74                         uint16  total_length;
  75                         uint8   bm_controls;
  76                 } _PACKED r2;
  77         };
  78 } _PACKED usb_audiocontrol_header_descriptor;
  79
  80
  81 // Input Terminal Descriptor
  82 // R1: Table 4-3 p.39 / R2: Table 4-9, page 53
  83 typedef struct {
  84         uint8   length;
  85         uint8   descriptor_type;                // USB_AUDIO_CS_INTERFACE
  86         uint8   descriptor_subtype;     // USB_AUDIO_AC_INPUT_TERMINAL
  87         uint8   terminal_id;
  88         uint16  terminal_type;
  89         uint8   assoc_terminal;
  90         union {
  91                 struct {
  92                         uint8   num_channels;
  93                         uint8   channel_config;
  94                         uint8   channel_names;
  95                         uint8   terminal;
  96                 } _PACKED r1;
  97
  98                 struct {
  99                         uint8   clock_source_id;
 100                         uint8   num_channels;
 101                         uint32  channel_config;
 102                         uint8   channel_names;
 103                         uint16  bm_controls;
 104                         uint8   terminal;
 105                 } _PACKED r2;
 106         };
 107 } _PACKED usb_audio_input_terminal_descriptor;
 108
 109
 110 // Output Terminal Descriptor
 111 // R1: Table 4-4 p.40 / R2: Table 4-10, page 54
 112 typedef struct {
 113         uint8   length;
 114         uint8   descriptor_type;                // USB_AUDIO_CS_INTERFACE
 115         uint8   descriptor_subtype;     // USB_AUDIO_AC_OUTPUT_TERMINAL
 116         uint8   terminal_id;
 117         uint16  terminal_type;
 118         uint8   assoc_terminal;
 119         uint8   source_id;
 120         union {
 121                 struct {
 122                         uint8   terminal;
 123                 } _PACKED r1;
 124
 125                 struct {
 126                         uint8   clock_source_id;
 127                         uint16  bm_controls;
 128                         uint8   terminal;
 129                 } _PACKED r2;
 130         };
 131 } _PACKED usb_audio_output_terminal_descriptor;
 132
 133
 134 // pseudo-descriptor for a section corresponding to logical output channels
 135 // used in mixer, processing and extension descriptions.
 136 typedef struct {
 137         uint8   num_output_pins;                // number of mixer output pins
 138         uint16  channel_config;                 // location of logical channels
 139         uint8   channel_names;                  // id of name string of first logical channel
 140 } _PACKED usb_audio_output_channels_descriptor_r1;
 141
 142 typedef struct {
 143         uint8   num_output_pins;                // number of mixer output pins
 144         uint32  channel_config;                 // location of logical channels
 145         uint8   channel_names;                  // id of name string of first logical channel
 146 } _PACKED usb_audio_output_channels_descriptor;
 147
 148
 149 // Mixer Unit Descriptor
 150 // R1: Table 4-5 p.41 / R2: Table 4-11, page 57
 151 typedef struct {
 152         uint8   length;
 153         uint8   descriptor_type;                // USB_AUDIO_CS_INTERFACE
 154         uint8   descriptor_subtype;     // USB_AUDIO_AC_MIXER_UNIT
 155         uint8   unit_id;
 156         uint8   num_input_pins;
 157         uint8   input_pins[1];
 158         // use usb_audio_output_channels_descriptor to parse the rest
 159 } _PACKED usb_audio_mixer_unit_descriptor;
 160
 161
 162 // Selector Unit Descriptor
 163 // R1: Table 4-6 p.43 / R2: Table 4-12, page 58
 164 typedef struct {
 165         uint8   length;
 166         uint8   descriptor_type;                // USB_AUDIO_CS_INTERFACE
 167         uint8   descriptor_subtype;     // USB_AUDIO_AC_SELECTOR_UNIT
 168         uint8   unit_id;
 169         uint8   num_input_pins;
 170         uint8   input_pins[1];
 171         // uint8 selector_string;
 172 } _PACKED usb_audio_selector_unit_descriptor;
 173
 174
 175 // Feature Unit Descriptor
 176 // R1: Table 4-7 p.43 / R2: Table 4-13, page 59
 177 typedef struct {
 178         uint8   length;
 179         uint8   descriptor_type;                // USB_AUDIO_CS_INTERFACE
 180         uint8   descriptor_subtype;     // USB_AUDIO_AC_FEATURE_UNIT
 181         uint8   unit_id;
 182         uint8   source_id;
 183         union {
 184                 struct {
 185                         uint8   control_size;
 186                         uint8   bma_controls[1];
 187                 //      uint8   feature_string;
 188                 } _PACKED r1;
 189
 190                 struct {
 191                         uint32  bma_controls[1];
 192                 //      uint8   feature_string;
 193                 } _PACKED r2;
 194         };
 195 } _PACKED usb_audio_feature_unit_descriptor;
 196
 197
 198 // Processing Unit Descriptor
 199 // R1: Table 4-8 p.45 / R2: Table 4-20, page 66
 200 typedef struct {
 201         uint8   length;
 202         uint8   descriptor_type;                // USB_AUDIO_CS_INTERFACE
 203         uint8   descriptor_subtype;     // USB_AUDIO_AC_PROCESSING_UNIT
 204         uint8   unit_id;
 205         uint16  process_type;
 206         uint8   num_input_pins;
 207         uint8   input_pins[1];
 208         // use usb_audio_output_channels_descriptor to parse the rest
 209 // TODO - the bmControl!!!!
 210 } _PACKED usb_audio_processing_unit_descriptor;
 211
 212 // Extension Unit Descriptor
 213 // R1: Table 4-15, p. 56 / R2: Table 4-24, p.73
 214 typedef struct {
 215         uint8   length;
 216         uint8   descriptor_type;                // USB_AUDIO_CS_INTERFACE
 217         uint8   descriptor_subtype;     // USB_AUDIO_AC_EXTENSION_UNIT
 218         uint8   unit_id;
 219         uint16  extension_code;
 220         uint8   num_input_pins;
 221         uint8   input_pins[1];
 222         // use usb_audio_output_channels_descriptor to parse the rest
 223 } _PACKED usb_audio_extension_unit_descriptor;
 224
 225
 226 enum { // Audio Class-Specific AudioStreaming Interface descriptor subtypes
 227         USB_AUDIO_AS_DESCRIPTOR_UNDEFINED       = 0x00,
 228         USB_AUDIO_AS_GENERAL                            = 0x01,
 229         USB_AUDIO_AS_FORMAT_TYPE                        = 0x02,
 230         USB_AUDIO_AS_FORMAT_SPECIFIC            = 0x03
 231 };
 232
 233 // Class Specific Audio Streaming Interface Descriptor
 234 // R1: Table 4-19 p.60 / R2: Table 4-27 p.76
 235 typedef struct {
 236         uint8   length;
 237         uint8   descriptor_type;                // USB_AUDIO_CS_INTERFACE
 238         uint8   descriptor_subtype;     // USB_AUDIO_AS_GENERAL
 239         uint8   terminal_link;
 240         union {
 241                 struct {
 242                         uint8   delay;
 243                         uint16  format_tag;
 244                 } _PACKED r1;
 245
 246                 struct {
 247                         uint8   bm_controls;
 248                         uint8   format_type;
 249                         uint32  bm_formats;
 250                         uint8   num_output_pins;
 251                         uint32  channel_config;
 252                         uint8   channel_names;
 253                 } _PACKED r2;
 254         };
 255 } _PACKED usb_audio_streaming_interface_descriptor;
 256
 257
 258 // Class-specific As Isochronous Audio Data Endpoint descriptor
 259 // R1: Table 4-21, p. 62 / R2: Table 4-34, page 87
 260 typedef struct {
 261         uint8   length;
 262         uint8   descriptor_type;                // USB_AUDIO_CS_ENDPOINT
 263         uint8   descriptor_subtype;     // USB_AUDIO_EP_GENERAL
 264         uint8   attributes;
 265         uint8   lock_delay_units;
 266         uint16  lock_delay;
 267 } _PACKED usb_audio_streaming_endpoint_descriptor;
 268
 269
 270 // Sampling Rate are represented as 3-byte integer
 271 typedef struct {
 272         uint8   bytes[3];
 273 } _PACKED usb_audio_sampling_freq;
 274
 275
 276 // Format Type I/II/III Descriptors
 277 // T1: Table 2-1, p.10 etc.
 278 // T2: Table 2-2, p.15 etc.
 279 typedef struct {
 280         uint8 length;
 281         uint8 descriptor_type;                          // USB_AUDIO_CS_INTERFACE
 282         uint8 descriptor_subtype;                       // USB_AUDIO_AS_FORMAT_TYPE
 283         uint8 format_type;                                      // USB_AUDIO_FORMAT_TYPE_I/II/III
 284         union {
 285                 struct {
 286                         uint8 nr_channels;
 287                         uint8 subframe_size;
 288                         uint8 bit_resolution;
 289                         uint8 sam_freq_type;
 290                         usb_audio_sampling_freq sam_freqs[1];
 291                 } _PACKED typeI;
 292
 293                 struct {
 294                         uint16 max_bit_rate;
 295                         uint16 samples_per_frame;
 296                         uint8 sam_freq_type;
 297                         usb_audio_sampling_freq sam_freqs[1];
 298                 } _PACKED typeII;
 299
 300                 struct {
 301                         uint8 nr_channels;
 302                         uint8 subframe_size;
 303                         uint8 bit_resolution;
 304                         uint8 sam_freq_type;
 305                         usb_audio_sampling_freq sam_freqs[1];
 306                 } _PACKED typeIII;
 307         };
 308 } _PACKED usb_audio_format_descriptor;
 309
 310
 311 enum { // Processing Unit Process Types  (for USB_AUDIO_AC_PROCESSING_UNIT)
 312         USB_AUDIO_UPDOWNMIX_PROCESS     = 0x01,
 313         USB_AUDIO_DOLBY_PROLOGIC_PROCESS,
 314         USB_AUDIO_3D_STEREO_EXTENDER_PROCESS,
 315         USB_AUDIO_REVERBERATION_PROCESS,
 316         USB_AUDIO_CHORUS_PROCESS,
 317         USB_AUDIO_DYN_RANGE_COMP_PROCESS
 318 };
 319
 320 enum { // Audio Class-Specific Request Codes
 321         USB_AUDIO_SET_CUR               = 0x01,
 322         USB_AUDIO_GET_CUR               = 0x81,
 323         USB_AUDIO_SET_MIN               = 0x02,
 324         USB_AUDIO_GET_MIN               = 0x82,
 325         USB_AUDIO_SET_MAX               = 0x03,
 326         USB_AUDIO_GET_MAX               = 0x83,
 327         USB_AUDIO_SET_RES               = 0x04,
 328         USB_AUDIO_GET_RES               = 0x84,
 329         USB_AUDIO_SET_MEM               = 0x05,
 330         USB_AUDIO_GET_MEM               = 0x85,
 331         USB_AUDIO_GET_STATUS    = 0xFF
 332 };
 333
 334 enum { // Terminal Control Selectors
 335         USB_AUDIO_COPY_PROTECT_CONTROL = 0x01
 336 };
 337
 338 // R2: A.17.5 Mixer Unit Control Selectors
 339 enum {
 340         USB_AUDIO_MU_CONTROL_UNDEFINED          = 0x00,
 341         USB_AUDIO_MIXER_CONTROL                         = 0x01,
 342         USB_AUDIO_CLUSTER_CONTROL                       = 0x02,
 343         USB_AUDIO_UNDERFLOW_CONTROL                     = 0x03,
 344         USB_AUDIO_OVERFLOW_CONTROL                      = 0x04,
 345         USB_AUDIO_LATENCY_CONTROL                       = 0x05
 346 };
 347
 348 /* A.10.2 Feature Unit Control Selectors */
 349 enum {
 350         USB_AUDIO_AC_FU_CONTROL_UNDEFINED       = 0x00,
 351         USB_AUDIO_MUTE_CONTROL                          = 0x01,
 352         USB_AUDIO_VOLUME_CONTROL                        = 0x02,
 353         USB_AUDIO_BASS_CONTROL                          = 0x03,
 354         USB_AUDIO_MID_CONTROL                           = 0x04,
 355         USB_AUDIO_TREBLE_CONTROL                        = 0x05,
 356         USB_AUDIO_GRAPHIC_EQUALIZER_CONTROL     = 0x06,
 357         USB_AUDIO_AUTOMATIC_GAIN_CONTROL        = 0x07,
 358         USB_AUDIO_DELAY_CONTROL                         = 0x08,
 359         USB_AUDIO_BASS_BOOST_CONTROL            = 0x09,
 360         USB_AUDIO_LOUDNESS_CONTROL                      = 0x0A
 361 };
 362
 363 /* A.10.3.1 Up/Down-mix Processing Unit Control Selectors */
 364 #define USB_AUDIO_UD_CONTROL_UNDEFINED 0x00
 365 #define USB_AUDIO_UD_ENABLED_CONTROL 0x01
 366 #define USB_AUDIO_UD_MODE_SELECT_CONTROL 0x02
 367
 368 /* A.10.3.2 Dolby Prologic(tm) Processing Unit Control Selectors */
 369 #define USB_AUDIO_DP_CONTROL_UNDEFINED 0x00
 370 #define USB_AUDIO_DP_ENABLE_CONTROL 0x01
 371 #define USB_AUDIO_DP_MODE_SELECT_CONTROL 0x02
 372
 373 /* A.10.3.3 3D Stereo Extender Processing Unit Control Selectors */
 374 #define USB_AUDIO_3D_CONTROL_UNDEFINED 0x00
 375 #define USB_AUDIO_3D_ENABLED_CONTROL 0x01
 376 #define USB_AUDIO_3D_SPACIOUSNESS_CONTROL 0x03
 377
 378 /* A.10.3.4 Reverberation Processing Unit Control Selectors */
 379 #define USB_AUDIO_RV_CONTROL_UNDEFINED 0x00
 380 #define USB_AUDIO_RV_ENABLE_CONTROL 0x01
 381 #define USB_AUDIO_RV_REVERB_LEVEL_CONTROL 0x02
 382 #define USB_AUDIO_RV_REVERB_TIME_CONTROL 0x03
 383 #define USB_AUDIO_RV_REVERB_FEEDBACK_CONTROL 0x04
 384
 385 /* A.10.3.5 Chorus Processing Unit Control Selectors */
 386 #define USB_AUDIO_CH_CONTROL_UNDEFINED 0x00
 387 #define USB_AUDIO_CH_ENABLE_CONTROL 0x01
 388 #define USB_AUDIO_CHORUS_LEVEL_CONTROL 0x02
 389 #define USB_AUDIO_CHORUS_RATE_CONTROL 0x03
 390 #define USB_AUDIO_CHORUS_DETH_CONTROL 0x04
 391
 392 /* A.10.3.6 Dynamic Range Compressor Processing Unit Control Selectors */
 393 #define USB_AUDIO_DR_CONTROL_UNDEFINED 0x00
 394 #define USB_AUDIO_DR_ENABLE_CONTROL 0x01
 395 #define USB_AUDIO_COMPRESSION_RATE_CONTROL 0x02
 396 #define USB_AUDIO_MAXAMPL_CONTROL 0x03
 397 #define USB_AUDIO_THRESHOLD_CONTROL 0x04
 398 #define USB_AUDIO_ATTACK_TIME 0x05
 399 #define USB_AUDIO_RELEASE_TIME 0x06
 400
 401 /* A.10.4 Extension Unit Control Selectors */
 402 #define USB_AUDIO_XU_CONTROL_UNDEFINED 0x00
 403 #define USB_AUDIO_XU_ENABLE_CONTROL 0x01
 404
 405 /* A.10.5 Endpoint Control Selectors */
 406 enum {
 407         USB_AUDIO_EP_CONTROL_UNDEFINED                  = 0x00,
 408         USB_AUDIO_SAMPLING_FREQ_CONTROL                 = 0x01,
 409         USB_AUDIO_PITCH_CONTROL                                 = 0x02
 410 };
 411
 412 /*
 413 typedef struct
 414 {
 415         uint8 length;
 416         uint8 type;
 417         uint8 subtype;
 418         uint8 unit_id;
 419         uint8 source_id;
 420         uint8 control_size;
 421         uint16 controls[0];
 422 } _PACKED usb_audio_feature_unit_descriptor;
 423
 424 typedef struct {
 425         uint8 length;
 426         uint8 type;
 427         uint8 subtype;
 428         uint8 format_type;
 429         uint8 num_channels;
 430         uint8 subframe_size;
 431         uint8 bit_resolution;
 432         uint8 sample_freq_type;
 433         uint8 sample_freq[3];   // [0] + [1] << 8 + [2] << 16
 434         //  if sample_freq_type != 1,
 435         // (sample_freq_type - 1) x uint8 sample_freq[3] follows...
 436 } _PACKED usb_audio_format_type_descriptor;
 437 */
 438 // bitset for feature control bitmap
 439 // Table 4-7, page 44, bmaControls field
 440 enum {
 441         BMA_CTL_MUTE_R1                 = 0X0001,
 442         BMA_CTL_VOLUME_R1               = 0X0002,
 443         BMA_CTL_BASS_R1                 = 0X0004,
 444         BMA_CTL_MID_R1                  = 0X0008,
 445         BMA_CTL_TREBLE_R1               = 0X0010,
 446         BMA_CTL_GRAPHEQ_R1              = 0X0020,
 447         BMA_CTL_AUTOGAIN_R1             = 0X0040,
 448         BMA_CTL_DELAY_R1                = 0X0080,
 449         BMA_CTL_BASSBOOST_R1    = 0X0100,
 450         BMA_CTL_LOUDNESS_R1             = 0X0200,
 451         // Release 2.0
 452         BMA_CTL_MUTE                    = 0X00000003,
 453         BMA_CTL_VOLUME                  = 0X0000000C,
 454         BMA_CTL_BASS                    = 0X00000030,
 455         BMA_CTL_MID                             = 0X000000C0,
 456         BMA_CTL_TREBLE                  = 0X00000300,
 457         BMA_CTL_GRAPHEQ                 = 0X00000C00,
 458         BMA_CTL_AUTOGAIN                = 0X00003000,
 459         BMA_CTL_DELAY                   = 0X0000C000,
 460         BMA_CTL_BASSBOOST               = 0X00030000,
 461         BMA_CTL_LOUDNESS                = 0X000C0000,
 462         BMA_CTL_INPUTGAIN               = 0X00300000,
 463         BMA_CTL_INPUTGAINPAD    = 0X00C00000,
 464         BMA_CTL_PHASEINVERTER   = 0X03000000,
 465         BMA_CTL_UNDERFLOW               = 0X0C000000,
 466         BMA_CTL_OVERFLOW                = 0X30000000
 467 };
 468
 469 // Table A-4, page 30
 470 // Format Type Codes
 471 enum {
 472         USB_AUDIO_FORMAT_TYPE_UNDEFINED         = 0x00,
 473         USB_AUDIO_FORMAT_TYPE_I                         = 0x01,
 474         USB_AUDIO_FORMAT_TYPE_II                        = 0x02,
 475         USB_AUDIO_FORMAT_TYPE_III                       = 0x03
 476 };
 477
 478 // Table A-1, page 29, wFormatTag
 479 // Audio Data Format Type I codes
 480 enum {
 481         USB_AUDIO_FORMAT_TYPE_I_UNDEFINED       = 0x0000,
 482         USB_AUDIO_FORMAT_PCM                            = 0x0001,
 483         USB_AUDIO_FORMAT_PCM8                           = 0x0002,
 484         USB_AUDIO_FORMAT_IEEE_FLOAT                     = 0x0003,
 485         USB_AUDIO_FORMAT_ALAW                           = 0x0004,
 486         USB_AUDIO_FORMAT_MULAW                          = 0x0005
 487 };
 488
 489
 490 enum {
 491         // USB Terminal Types
 492         USB_AUDIO_UNDEFINED_USB_IO                      = 0x100,
 493         USB_AUDIO_STREAMING_USB_IO                      = 0x101,
 494         USB_AUDIO_VENDOR_USB_IO                         = 0x1ff,
 495         // Input Terminal Types
 496         USB_AUDIO_UNDEFINED_IN                          = 0x200,
 497         USB_AUDIO_MICROPHONE_IN                         = 0x201,
 498         USB_AUDIO_DESKTOPMIC_IN                         = 0x202,
 499         USB_AUDIO_PERSONALMIC_IN                        = 0x203,
 500         USB_AUDIO_OMNI_MIC_IN                           = 0x204,
 501         USB_AUDIO_MICS_ARRAY_IN                         = 0x205,
 502         USB_AUDIO_PROC_MICS_ARRAY_IN            = 0x206,
 503         // Output Terminal Types
 504         USB_AUDIO_UNDEFINED_OUT                         = 0x300,
 505         USB_AUDIO_SPEAKER_OUT                           = 0x301,
 506         USB_AUDIO_HEAD_PHONES_OUT                       = 0x302,
 507         USB_AUDIO_HMD_AUDIO_OUT                         = 0x303,
 508         USB_AUDIO_DESKTOP_SPEAKER                       = 0x304,
 509         USB_AUDIO_ROOM_SPEAKER                          = 0x305,
 510         USB_AUDIO_COMM_SPEAKER                          = 0x306,
 511         USB_AUDIO_LFE_SPEAKER                           = 0x307,
 512         // Bi-directional Terminal Types
 513         USB_AUDIO_UNDEFINED_IO                          = 0x400,
 514         USB_AUDIO_HANDSET_IO                            = 0x401,
 515         USB_AUDIO_HEADSET_IO                            = 0x402,
 516         USB_AUDIO_SPEAKER_PHONE_IO                      = 0x403,
 517         USB_AUDIO_SPEAKER_PHONEES_IO            = 0x404,
 518         USB_AUDIO_SPEAKER_PHONEEC_IO            = 0x405,
 519         // Telephony Terminal Types
 520         USB_AUDIO_UNDEF_TELEPHONY_IO            = 0x500,
 521         USB_AUDIO_PHONE_LINE_IO                         = 0x501,
 522         USB_AUDIO_TELEPHONE_IO                          = 0x502,
 523         USB_AUDIO_DOWNLINE_PHONE_IO                     = 0x503,
 524         // External Terminal Types
 525         USB_AUDIO_UNDEFINEDEXT_IO                       = 0x600,
 526         USB_AUDIO_ANALOG_CONNECTOR_IO           = 0x601,
 527         USB_AUDIO_DAINTERFACE_IO                        = 0x602,
 528         USB_AUDIO_LINE_CONNECTOR_IO                     = 0x603,
 529         USB_AUDIO_LEGACY_CONNECTOR_IO           = 0x604,
 530         USB_AUDIO_SPDIF_INTERFACE_IO            = 0x605,
 531         USB_AUDIO_DA1394_STREAM_IO                      = 0x606,
 532         USB_AUDIO_DV1394_STREAMSOUND_IO         = 0x607,
 533         USB_AUDIO_ADAT_LIGHTPIPE_IO                     = 0x608,
 534         USB_AUDIO_TDIF_IO                                       = 0x609,
 535         USB_AUDIO_MADI_IO                                       = 0x60a,
 536         // Embedded Terminal Types
 537         USB_AUDIO_UNDEF_EMBEDDED_IO                     = 0x700,
 538         USB_AUDIO_LC_NOISE_SOURCE_OUT           = 0x701,
 539         USB_AUDIO_EQUALIZATION_NOISE_OUT        = 0x702,
 540         USB_AUDIO_CDPLAYER_IN                           = 0x703,
 541         USB_AUDIO_DAT_IO                                        = 0x704,
 542         USB_AUDIO_DCC_IO                                        = 0x705,
 543         USB_AUDIO_MINI_DISK_IO                          = 0x706,
 544         USB_AUDIO_ANALOG_TAPE_IO                        = 0x707,
 545         USB_AUDIO_PHONOGRAPH_IN                         = 0x708,
 546         USB_AUDIO_VCR_AUDIO_IN                          = 0x709,
 547         USB_AUDIO_VIDEO_DISC_AUDIO_IN           = 0x70a,
 548         USB_AUDIO_DVD_AUDIO_IN                          = 0x70b,
 549         USB_AUDIO_TV_TUNER_AUDIO_IN                     = 0x70c,
 550         USB_AUDIO_SAT_RECEIVER_AUDIO_IN         = 0x70d,
 551         USB_AUDIO_CABLE_TUNER_AUDIO_IN          = 0x70e,
 552         USB_AUDIO_DSS_AUDIO_IN                          = 0x70f,
 553         USB_AUDIO_RADIO_RECEIVER_IN                     = 0x710,
 554         USB_AUDIO_RADIO_TRANSMITTER_IN          = 0x711,
 555         USB_AUDIO_MULTI_TRACK_RECORDER_IO       = 0x712,
 556         USB_AUDIO_SYNTHESIZER_IO                        = 0x713,
 557         USB_AUDIO_PIANO_IO                                      = 0x714,
 558         USB_AUDIO_GUITAR_IO                                     = 0x715,
 559         USB_AUDIO_DRUMS_IO                                      = 0x716,
 560         USB_AUDIO_INSTRUMENT_IO                         = 0x717
 561 };
 562
 563
 564 #endif  // USB_AUDIO_H