LUFA/Drivers/USB/Class/Device/AudioClassDevice.c

   1 /*
   2              LUFA Library
   3      Copyright (C) Dean Camera, 2012.
   4
   5   dean [at] fourwalledcubicle [dot] com
   6            www.lufa-lib.org
   7 */
   8
   9 /*
  10   Copyright 2012  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 disclaim 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 #define  __INCLUDE_FROM_USB_DRIVER
  32 #include "../../Core/USBMode.h"
  33
  34 #if defined(USB_CAN_BE_DEVICE)
  35
  36 #define  __INCLUDE_FROM_AUDIO_DRIVER
  37 #define  __INCLUDE_FROM_AUDIO_DEVICE_C
  38 #include "AudioClassDevice.h"
  39
  40 void Audio_Device_ProcessControlRequest(USB_ClassInfo_Audio_Device_t* const AudioInterfaceInfo)
  41 {
  42         if (!(Endpoint_IsSETUPReceived()))
  43           return;
  44
  45         if ((USB_ControlRequest.bmRequestType & CONTROL_REQTYPE_RECIPIENT) == REQREC_INTERFACE)
  46         {
  47                 if ((USB_ControlRequest.wIndex & 0xFF) != AudioInterfaceInfo->Config.StreamingInterfaceNumber)
  48                   return;
  49         }
  50         else if ((USB_ControlRequest.bmRequestType & CONTROL_REQTYPE_RECIPIENT) == REQREC_ENDPOINT)
  51         {
  52                 bool EndpointFilterMatch = false;
  53
  54                 EndpointFilterMatch |= (AudioInterfaceInfo->Config.DataINEndpointNumber &&
  55                                         ((uint8_t)USB_ControlRequest.wIndex == (ENDPOINT_DIR_IN  | AudioInterfaceInfo->Config.DataINEndpointNumber)));
  56
  57                 EndpointFilterMatch |= (AudioInterfaceInfo->Config.DataOUTEndpointNumber &&
  58                                         ((uint8_t)USB_ControlRequest.wIndex == (ENDPOINT_DIR_OUT | AudioInterfaceInfo->Config.DataOUTEndpointNumber)));
  59
  60                 if (!(EndpointFilterMatch))
  61                   return;
  62         }
  63
  64         switch (USB_ControlRequest.bRequest)
  65         {
  66                 case REQ_SetInterface:
  67                         if (USB_ControlRequest.bmRequestType == (REQDIR_HOSTTODEVICE | REQTYPE_STANDARD | REQREC_INTERFACE))
  68                         {
  69                                 Endpoint_ClearSETUP();
  70                                 Endpoint_ClearStatusStage();
  71
  72                                 AudioInterfaceInfo->State.InterfaceEnabled = ((USB_ControlRequest.wValue & 0xFF) != 0);
  73                                 EVENT_Audio_Device_StreamStartStop(AudioInterfaceInfo);
  74                         }
  75
  76                         break;
  77                 case AUDIO_REQ_GetStatus:
  78                         if ((USB_ControlRequest.bmRequestType == (REQDIR_HOSTTODEVICE | REQTYPE_CLASS | REQREC_INTERFACE)) ||
  79                             (USB_ControlRequest.bmRequestType == (REQDIR_HOSTTODEVICE | REQTYPE_CLASS | REQREC_ENDPOINT)))
  80                         {
  81                                 Endpoint_ClearSETUP();
  82                                 Endpoint_ClearStatusStage();
  83                         }
  84
  85                         break;
  86                 case AUDIO_REQ_SetCurrent:
  87                 case AUDIO_REQ_SetMinimum:
  88                 case AUDIO_REQ_SetMaximum:
  89                 case AUDIO_REQ_SetResolution:
  90                         if (USB_ControlRequest.bmRequestType == (REQDIR_HOSTTODEVICE | REQTYPE_CLASS | REQREC_ENDPOINT))
  91                         {
  92                                 uint8_t EndpointProperty = USB_ControlRequest.bRequest;
  93                                 uint8_t EndpointAddress  = (uint8_t)USB_ControlRequest.wIndex;
  94                                 uint8_t EndpointControl  = (USB_ControlRequest.wValue >> 8);
  95
  96                                 if (CALLBACK_Audio_Device_GetSetEndpointProperty(AudioInterfaceInfo, EndpointProperty, EndpointAddress,
  97                                                                                  EndpointControl, NULL, NULL))
  98                                 {
  99                                         uint16_t ValueLength = USB_ControlRequest.wLength;
 100                                         uint8_t  Value[ValueLength];
 101
 102                                         Endpoint_ClearSETUP();
 103                                         Endpoint_Read_Control_Stream_LE(Value, ValueLength);
 104                                         Endpoint_ClearIN();
 105
 106                                         CALLBACK_Audio_Device_GetSetEndpointProperty(AudioInterfaceInfo, EndpointProperty, EndpointAddress,
 107                                                                                      EndpointControl, &ValueLength, Value);
 108                                 }
 109                         }
 110                         else if (USB_ControlRequest.bmRequestType == (REQDIR_HOSTTODEVICE | REQTYPE_CLASS | REQREC_INTERFACE))
 111                         {
 112                                 uint8_t  Property  = USB_ControlRequest.bRequest;
 113                                 uint8_t  Entity    = (USB_ControlRequest.wIndex >> 8);
 114                                 uint16_t Parameter = USB_ControlRequest.wValue;
 115
 116                                 if (CALLBACK_Audio_Device_GetSetInterfaceProperty(AudioInterfaceInfo, Property, Entity,
 117                                                                                   Parameter, NULL, NULL))
 118                                 {
 119                                         uint16_t ValueLength = USB_ControlRequest.wLength;
 120                                         uint8_t  Value[ValueLength];
 121
 122                                         Endpoint_ClearSETUP();
 123                                         Endpoint_Read_Control_Stream_LE(Value, ValueLength);
 124                                         Endpoint_ClearIN();
 125
 126                                         CALLBACK_Audio_Device_GetSetInterfaceProperty(AudioInterfaceInfo, Property, Entity,
 127                                                                                   Parameter, NULL, NULL);
 128                                 }
 129                         }
 130
 131                         break;
 132                 case AUDIO_REQ_GetCurrent:
 133                 case AUDIO_REQ_GetMinimum:
 134                 case AUDIO_REQ_GetMaximum:
 135                 case AUDIO_REQ_GetResolution:
 136                         if (USB_ControlRequest.bmRequestType == (REQDIR_DEVICETOHOST | REQTYPE_CLASS | REQREC_ENDPOINT))
 137                         {
 138                                 uint8_t  EndpointProperty = USB_ControlRequest.bRequest;
 139                                 uint8_t  EndpointAddress  = (uint8_t)USB_ControlRequest.wIndex;
 140                                 uint8_t  EndpointControl  = (USB_ControlRequest.wValue >> 8);
 141                                 uint16_t ValueLength      = USB_ControlRequest.wLength;
 142                                 uint8_t  Value[ValueLength];
 143
 144                                 if (CALLBACK_Audio_Device_GetSetEndpointProperty(AudioInterfaceInfo, EndpointProperty, EndpointAddress,
 145                                                                                  EndpointControl, &ValueLength, Value))
 146                                 {
 147                                         Endpoint_ClearSETUP();
 148                                         Endpoint_Write_Control_Stream_LE(Value, ValueLength);
 149                                         Endpoint_ClearOUT();
 150                                 }
 151                         }
 152                         else if (USB_ControlRequest.bmRequestType == (REQDIR_DEVICETOHOST | REQTYPE_CLASS | REQREC_INTERFACE))
 153                         {
 154                                 uint8_t  Property    = USB_ControlRequest.bRequest;
 155                                 uint8_t  Entity      = (USB_ControlRequest.wIndex >> 8);
 156                                 uint16_t Parameter   = USB_ControlRequest.wValue;
 157                                 uint16_t ValueLength = USB_ControlRequest.wLength;
 158                                 uint8_t  Value[ValueLength];
 159
 160                                 if (CALLBACK_Audio_Device_GetSetInterfaceProperty(AudioInterfaceInfo, Property, Entity,
 161                                                                                   Parameter, &ValueLength, Value))
 162                                 {
 163                                         Endpoint_ClearSETUP();
 164                                         Endpoint_Write_Control_Stream_LE(Value, ValueLength);
 165                                         Endpoint_ClearOUT();
 166                                 }
 167                         }
 168
 169                         break;
 170         }
 171 }
 172
 173 bool Audio_Device_ConfigureEndpoints(USB_ClassInfo_Audio_Device_t* const AudioInterfaceInfo)
 174 {
 175         memset(&AudioInterfaceInfo->State, 0x00, sizeof(AudioInterfaceInfo->State));
 176
 177         for (uint8_t EndpointNum = 1; EndpointNum < ENDPOINT_TOTAL_ENDPOINTS; EndpointNum++)
 178         {
 179                 uint16_t Size;
 180                 uint8_t  Type;
 181                 uint8_t  Direction;
 182                 bool     DoubleBanked;
 183
 184                 if (EndpointNum == AudioInterfaceInfo->Config.DataINEndpointNumber)
 185                 {
 186                         Size         = AudioInterfaceInfo->Config.DataINEndpointSize;
 187                         Direction    = ENDPOINT_DIR_IN;
 188                         Type         = EP_TYPE_ISOCHRONOUS;
 189                         DoubleBanked = true;
 190                 }
 191                 else if (EndpointNum == AudioInterfaceInfo->Config.DataOUTEndpointNumber)
 192                 {
 193                         Size         = AudioInterfaceInfo->Config.DataOUTEndpointSize;
 194                         Direction    = ENDPOINT_DIR_OUT;
 195                         Type         = EP_TYPE_ISOCHRONOUS;
 196                         DoubleBanked = true;
 197                 }
 198                 else
 199                 {
 200                         continue;
 201                 }
 202
 203                 if (!(Endpoint_ConfigureEndpoint(EndpointNum, Type, Direction, Size,
 204                                                  DoubleBanked ? ENDPOINT_BANK_DOUBLE : ENDPOINT_BANK_SINGLE)))
 205                 {
 206                         return false;
 207                 }
 208         }
 209
 210         return true;
 211 }
 212
 213 void Audio_Device_Event_Stub(void)
 214 {
 215
 216 }
 217
 218 #endif
 219