protocol/lufa/LUFA-git/Demos/Device/ClassDriver/MIDI/Descriptors.c

   1 /*
   2              LUFA Library
   3      Copyright (C) Dean Camera, 2014.
   4
   5   dean [at] fourwalledcubicle [dot] com
   6            www.lufa-lib.org
   7 */
   8
   9 /*
  10   Copyright 2014  Dean Camera (dean [at] fourwalledcubicle [dot] com)
  11
  12   Permission to use, copy, modify, distribute, and sell this
  13   software and its documentation for any purpose is hereby granted
  14   without fee, provided that the above copyright notice appear in
  15   all copies and that both that the copyright notice and this
  16   permission notice and warranty disclaimer appear in supporting
  17   documentation, and that the name of the author not be used in
  18   advertising or publicity pertaining to distribution of the
  19   software without specific, written prior permission.
  20
  21   The author disclaims all warranties with regard to this
  22   software, including all implied warranties of merchantability
  23   and fitness.  In no event shall the author be liable for any
  24   special, indirect or consequential damages or any damages
  25   whatsoever resulting from loss of use, data or profits, whether
  26   in an action of contract, negligence or other tortious action,
  27   arising out of or in connection with the use or performance of
  28   this software.
  29 */
  30
  31 /** \file
  32  *
  33  *  USB Device Descriptors, for library use when in USB device mode. Descriptors are special
  34  *  computer-readable structures which the host requests upon device enumeration, to determine
  35  *  the device's capabilities and functions.
  36  */
  37
  38 #include "Descriptors.h"
  39
  40 /** Device descriptor structure. This descriptor, located in FLASH memory, describes the overall
  41  *  device characteristics, including the supported USB version, control endpoint size and the
  42  *  number of device configurations. The descriptor is read out by the USB host when the enumeration
  43  *  process begins.
  44  */
  45 const USB_Descriptor_Device_t PROGMEM DeviceDescriptor =
  46 {
  47         .Header                 = {.Size = sizeof(USB_Descriptor_Device_t), .Type = DTYPE_Device},
  48
  49         .USBSpecification       = VERSION_BCD(1,1,0),
  50         .Class                  = USB_CSCP_NoDeviceClass,
  51         .SubClass               = USB_CSCP_NoDeviceSubclass,
  52         .Protocol               = USB_CSCP_NoDeviceProtocol,
  53
  54         .Endpoint0Size          = FIXED_CONTROL_ENDPOINT_SIZE,
  55
  56         .VendorID               = 0x03EB,
  57         .ProductID              = 0x2048,
  58         .ReleaseNumber          = VERSION_BCD(0,0,1),
  59
  60         .ManufacturerStrIndex   = STRING_ID_Manufacturer,
  61         .ProductStrIndex        = STRING_ID_Product,
  62         .SerialNumStrIndex      = NO_DESCRIPTOR,
  63
  64         .NumberOfConfigurations = FIXED_NUM_CONFIGURATIONS
  65 };
  66
  67 /** Configuration descriptor structure. This descriptor, located in FLASH memory, describes the usage
  68  *  of the device in one of its supported configurations, including information about any device interfaces
  69  *  and endpoints. The descriptor is read out by the USB host during the enumeration process when selecting
  70  *  a configuration so that the host may correctly communicate with the USB device.
  71  */
  72 const USB_Descriptor_Configuration_t PROGMEM ConfigurationDescriptor =
  73 {
  74         .Config =
  75                 {
  76                         .Header                   = {.Size = sizeof(USB_Descriptor_Configuration_Header_t), .Type = DTYPE_Configuration},
  77
  78                         .TotalConfigurationSize   = sizeof(USB_Descriptor_Configuration_t),
  79                         .TotalInterfaces          = 2,
  80
  81                         .ConfigurationNumber      = 1,
  82                         .ConfigurationStrIndex    = NO_DESCRIPTOR,
  83
  84                         .ConfigAttributes         = (USB_CONFIG_ATTR_RESERVED | USB_CONFIG_ATTR_SELFPOWERED),
  85
  86                         .MaxPowerConsumption      = USB_CONFIG_POWER_MA(100)
  87                 },
  88
  89         .Audio_ControlInterface =
  90                 {
  91                         .Header                   = {.Size = sizeof(USB_Descriptor_Interface_t), .Type = DTYPE_Interface},
  92
  93                         .InterfaceNumber          = INTERFACE_ID_AudioControl,
  94                         .AlternateSetting         = 0,
  95
  96                         .TotalEndpoints           = 0,
  97
  98                         .Class                    = AUDIO_CSCP_AudioClass,
  99                         .SubClass                 = AUDIO_CSCP_ControlSubclass,
 100                         .Protocol                 = AUDIO_CSCP_ControlProtocol,
 101
 102                         .InterfaceStrIndex        = NO_DESCRIPTOR
 103                 },
 104
 105         .Audio_ControlInterface_SPC =
 106                 {
 107                         .Header                   = {.Size = sizeof(USB_Audio_Descriptor_Interface_AC_t), .Type = DTYPE_CSInterface},
 108                         .Subtype                  = AUDIO_DSUBTYPE_CSInterface_Header,
 109
 110                         .ACSpecification          = VERSION_BCD(1,0,0),
 111                         .TotalLength              = sizeof(USB_Audio_Descriptor_Interface_AC_t),
 112
 113                         .InCollection             = 1,
 114                         .InterfaceNumber          = INTERFACE_ID_AudioStream,
 115                 },
 116
 117         .Audio_StreamInterface =
 118                 {
 119                         .Header                   = {.Size = sizeof(USB_Descriptor_Interface_t), .Type = DTYPE_Interface},
 120
 121                         .InterfaceNumber          = INTERFACE_ID_AudioStream,
 122                         .AlternateSetting         = 0,
 123
 124                         .TotalEndpoints           = 2,
 125
 126                         .Class                    = AUDIO_CSCP_AudioClass,
 127                         .SubClass                 = AUDIO_CSCP_MIDIStreamingSubclass,
 128                         .Protocol                 = AUDIO_CSCP_StreamingProtocol,
 129
 130                         .InterfaceStrIndex        = NO_DESCRIPTOR
 131                 },
 132
 133         .Audio_StreamInterface_SPC =
 134                 {
 135                         .Header                   = {.Size = sizeof(USB_MIDI_Descriptor_AudioInterface_AS_t), .Type = DTYPE_CSInterface},
 136                         .Subtype                  = AUDIO_DSUBTYPE_CSInterface_General,
 137
 138                         .AudioSpecification       = VERSION_BCD(1,0,0),
 139
 140                         .TotalLength              = (sizeof(USB_Descriptor_Configuration_t) -
 141                                                      offsetof(USB_Descriptor_Configuration_t, Audio_StreamInterface_SPC))
 142                 },
 143
 144         .MIDI_In_Jack_Emb =
 145                 {
 146                         .Header                   = {.Size = sizeof(USB_MIDI_Descriptor_InputJack_t), .Type = DTYPE_CSInterface},
 147                         .Subtype                  = AUDIO_DSUBTYPE_CSInterface_InputTerminal,
 148
 149                         .JackType                 = MIDI_JACKTYPE_Embedded,
 150                         .JackID                   = 0x01,
 151
 152                         .JackStrIndex             = NO_DESCRIPTOR
 153                 },
 154
 155         .MIDI_In_Jack_Ext =
 156                 {
 157                         .Header                   = {.Size = sizeof(USB_MIDI_Descriptor_InputJack_t), .Type = DTYPE_CSInterface},
 158                         .Subtype                  = AUDIO_DSUBTYPE_CSInterface_InputTerminal,
 159
 160                         .JackType                 = MIDI_JACKTYPE_External,
 161                         .JackID                   = 0x02,
 162
 163                         .JackStrIndex             = NO_DESCRIPTOR
 164                 },
 165
 166         .MIDI_Out_Jack_Emb =
 167                 {
 168                         .Header                   = {.Size = sizeof(USB_MIDI_Descriptor_OutputJack_t), .Type = DTYPE_CSInterface},
 169                         .Subtype                  = AUDIO_DSUBTYPE_CSInterface_OutputTerminal,
 170
 171                         .JackType                 = MIDI_JACKTYPE_Embedded,
 172                         .JackID                   = 0x03,
 173
 174                         .NumberOfPins             = 1,
 175                         .SourceJackID             = {0x02},
 176                         .SourcePinID              = {0x01},
 177
 178                         .JackStrIndex             = NO_DESCRIPTOR
 179                 },
 180
 181         .MIDI_Out_Jack_Ext =
 182                 {
 183                         .Header                   = {.Size = sizeof(USB_MIDI_Descriptor_OutputJack_t), .Type = DTYPE_CSInterface},
 184                         .Subtype                  = AUDIO_DSUBTYPE_CSInterface_OutputTerminal,
 185
 186                         .JackType                 = MIDI_JACKTYPE_External,
 187                         .JackID                   = 0x04,
 188
 189                         .NumberOfPins             = 1,
 190                         .SourceJackID             = {0x01},
 191                         .SourcePinID              = {0x01},
 192
 193                         .JackStrIndex             = NO_DESCRIPTOR
 194                 },
 195
 196         .MIDI_In_Jack_Endpoint =
 197                 {
 198                         .Endpoint =
 199                                 {
 200                                         .Header              = {.Size = sizeof(USB_Audio_Descriptor_StreamEndpoint_Std_t), .Type = DTYPE_Endpoint},
 201
 202                                         .EndpointAddress     = MIDI_STREAM_OUT_EPADDR,
 203                                         .Attributes          = (EP_TYPE_BULK | ENDPOINT_ATTR_NO_SYNC | ENDPOINT_USAGE_DATA),
 204                                         .EndpointSize        = MIDI_STREAM_EPSIZE,
 205                                         .PollingIntervalMS   = 0x05
 206                                 },
 207
 208                         .Refresh                  = 0,
 209                         .SyncEndpointNumber       = 0
 210                 },
 211
 212         .MIDI_In_Jack_Endpoint_SPC =
 213                 {
 214                         .Header                   = {.Size = sizeof(USB_MIDI_Descriptor_Jack_Endpoint_t), .Type = DTYPE_CSEndpoint},
 215                         .Subtype                  = AUDIO_DSUBTYPE_CSEndpoint_General,
 216
 217                         .TotalEmbeddedJacks       = 0x01,
 218                         .AssociatedJackID         = {0x01}
 219                 },
 220
 221         .MIDI_Out_Jack_Endpoint =
 222                 {
 223                         .Endpoint =
 224                                 {
 225                                         .Header              = {.Size = sizeof(USB_Audio_Descriptor_StreamEndpoint_Std_t), .Type = DTYPE_Endpoint},
 226
 227                                         .EndpointAddress     = MIDI_STREAM_IN_EPADDR,
 228                                         .Attributes          = (EP_TYPE_BULK | ENDPOINT_ATTR_NO_SYNC | ENDPOINT_USAGE_DATA),
 229                                         .EndpointSize        = MIDI_STREAM_EPSIZE,
 230                                         .PollingIntervalMS   = 0x05
 231                                 },
 232
 233                         .Refresh                  = 0,
 234                         .SyncEndpointNumber       = 0
 235                 },
 236
 237         .MIDI_Out_Jack_Endpoint_SPC =
 238                 {
 239                         .Header                   = {.Size = sizeof(USB_MIDI_Descriptor_Jack_Endpoint_t), .Type = DTYPE_CSEndpoint},
 240                         .Subtype                  = AUDIO_DSUBTYPE_CSEndpoint_General,
 241
 242                         .TotalEmbeddedJacks       = 0x01,
 243                         .AssociatedJackID         = {0x03}
 244                 }
 245 };
 246
 247 /** Language descriptor structure. This descriptor, located in FLASH memory, is returned when the host requests
 248  *  the string descriptor with index 0 (the first index). It is actually an array of 16-bit integers, which indicate
 249  *  via the language ID table available at USB.org what languages the device supports for its string descriptors.
 250  */
 251 const USB_Descriptor_String_t PROGMEM LanguageString = USB_STRING_DESCRIPTOR_ARRAY(LANGUAGE_ID_ENG);
 252
 253 /** Manufacturer descriptor string. This is a Unicode string containing the manufacturer's details in human readable
 254  *  form, and is read out upon request by the host when the appropriate string ID is requested, listed in the Device
 255  *  Descriptor.
 256  */
 257 const USB_Descriptor_String_t PROGMEM ManufacturerString = USB_STRING_DESCRIPTOR(L"Dean Camera");
 258
 259 /** Product descriptor string. This is a Unicode string containing the product's details in human readable form,
 260  *  and is read out upon request by the host when the appropriate string ID is requested, listed in the Device
 261  *  Descriptor.
 262  */
 263 const USB_Descriptor_String_t PROGMEM ProductString = USB_STRING_DESCRIPTOR(L"LUFA MIDI Demo");
 264
 265 /** This function is called by the library when in device mode, and must be overridden (see library "USB Descriptors"
 266  *  documentation) by the application code so that the address and size of a requested descriptor can be given
 267  *  to the USB library. When the device receives a Get Descriptor request on the control endpoint, this function
 268  *  is called so that the descriptor details can be passed back and the appropriate descriptor sent back to the
 269  *  USB host.
 270  */
 271 uint16_t CALLBACK_USB_GetDescriptor(const uint16_t wValue,
 272                                     const uint8_t wIndex,
 273                                     const void** const DescriptorAddress)
 274 {
 275         const uint8_t  DescriptorType   = (wValue >> 8);
 276         const uint8_t  DescriptorNumber = (wValue & 0xFF);
 277
 278         const void* Address = NULL;
 279         uint16_t    Size    = NO_DESCRIPTOR;
 280
 281         switch (DescriptorType)
 282         {
 283                 case DTYPE_Device:
 284                         Address = &DeviceDescriptor;
 285                         Size    = sizeof(USB_Descriptor_Device_t);
 286                         break;
 287                 case DTYPE_Configuration:
 288                         Address = &ConfigurationDescriptor;
 289                         Size    = sizeof(USB_Descriptor_Configuration_t);
 290                         break;
 291                 case DTYPE_String:
 292                         switch (DescriptorNumber)
 293                         {
 294                                 case STRING_ID_Language:
 295                                         Address = &LanguageString;
 296                                         Size    = pgm_read_byte(&LanguageString.Header.Size);
 297                                         break;
 298                                 case STRING_ID_Manufacturer:
 299                                         Address = &ManufacturerString;
 300                                         Size    = pgm_read_byte(&ManufacturerString.Header.Size);
 301                                         break;
 302                                 case STRING_ID_Product:
 303                                         Address = &ProductString;
 304                                         Size    = pgm_read_byte(&ProductString.Header.Size);
 305                                         break;
 306                         }
 307
 308                         break;
 309         }
 310
 311         *DescriptorAddress = Address;
 312         return Size;
 313 }
 314