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                 uint8_t InterfaceIndex = (USB_ControlRequest.wIndex & 0xFF);
  48
  49                 if ((InterfaceIndex != AudioInterfaceInfo->Config.ControlInterfaceNumber) &&
  50                     (InterfaceIndex != AudioInterfaceInfo->Config.StreamingInterfaceNumber))
  51
  52                   return;
  53         }
  54         else if ((USB_ControlRequest.bmRequestType & CONTROL_REQTYPE_RECIPIENT) == REQREC_ENDPOINT)
  55         {
  56                 uint8_t EndpointIndex = (USB_ControlRequest.wIndex & 0xFF);
  57
  58                 if ((EndpointIndex != (ENDPOINT_DIR_IN  | AudioInterfaceInfo->Config.DataINEndpointNumber)) &&
  59                     (EndpointIndex != (ENDPOINT_DIR_OUT | AudioInterfaceInfo->Config.DataOUTEndpointNumber)))
  60                 {
  61                         return;
  62                 }
  63         }
  64
  65         switch (USB_ControlRequest.bRequest)
  66         {
  67                 case REQ_SetInterface:
  68                         if (USB_ControlRequest.bmRequestType == (REQDIR_HOSTTODEVICE | REQTYPE_STANDARD | REQREC_INTERFACE))
  69                         {
  70                                 Endpoint_ClearSETUP();
  71                                 Endpoint_ClearStatusStage();
  72
  73                                 AudioInterfaceInfo->State.InterfaceEnabled = ((USB_ControlRequest.wValue & 0xFF) != 0);
  74                                 EVENT_Audio_Device_StreamStartStop(AudioInterfaceInfo);
  75                         }
  76
  77                         break;
  78                 case AUDIO_REQ_GetStatus:
  79                         if ((USB_ControlRequest.bmRequestType == (REQDIR_HOSTTODEVICE | REQTYPE_CLASS | REQREC_INTERFACE)) ||
  80                             (USB_ControlRequest.bmRequestType == (REQDIR_HOSTTODEVICE | REQTYPE_CLASS | REQREC_ENDPOINT)))
  81                         {
  82                                 Endpoint_ClearSETUP();
  83                                 Endpoint_ClearStatusStage();
  84                         }
  85
  86                         break;
  87                 case AUDIO_REQ_SetCurrent:
  88                 case AUDIO_REQ_SetMinimum:
  89                 case AUDIO_REQ_SetMaximum:
  90                 case AUDIO_REQ_SetResolution:
  91                         if (USB_ControlRequest.bmRequestType == (REQDIR_HOSTTODEVICE | REQTYPE_CLASS | REQREC_ENDPOINT))
  92                         {
  93                                 uint8_t EndpointProperty = USB_ControlRequest.bRequest;
  94                                 uint8_t EndpointAddress  = (uint8_t)USB_ControlRequest.wIndex;
  95                                 uint8_t EndpointControl  = (USB_ControlRequest.wValue >> 8);
  96
  97                                 if (CALLBACK_Audio_Device_GetSetEndpointProperty(AudioInterfaceInfo, EndpointProperty, EndpointAddress,
  98                                                                                  EndpointControl, NULL, NULL))
  99                                 {
 100                                         uint16_t ValueLength = USB_ControlRequest.wLength;
 101                                         uint8_t  Value[ValueLength];
 102
 103                                         Endpoint_ClearSETUP();
 104                                         Endpoint_Read_Control_Stream_LE(Value, ValueLength);
 105                                         Endpoint_ClearIN();
 106
 107                                         CALLBACK_Audio_Device_GetSetEndpointProperty(AudioInterfaceInfo, EndpointProperty, EndpointAddress,
 108                                                                                      EndpointControl, &ValueLength, Value);
 109                                 }
 110                         }
 111                         else if (USB_ControlRequest.bmRequestType == (REQDIR_HOSTTODEVICE | REQTYPE_CLASS | REQREC_INTERFACE))
 112                         {
 113                                 uint8_t  Property  = USB_ControlRequest.bRequest;
 114                                 uint8_t  Entity    = (USB_ControlRequest.wIndex >> 8);
 115                                 uint16_t Parameter = USB_ControlRequest.wValue;
 116
 117                                 if (CALLBACK_Audio_Device_GetSetInterfaceProperty(AudioInterfaceInfo, Property, Entity,
 118                                                                                   Parameter, NULL, NULL))
 119                                 {
 120                                         uint16_t ValueLength = USB_ControlRequest.wLength;
 121                                         uint8_t  Value[ValueLength];
 122
 123                                         Endpoint_ClearSETUP();
 124                                         Endpoint_Read_Control_Stream_LE(Value, ValueLength);
 125                                         Endpoint_ClearIN();
 126
 127                                         CALLBACK_Audio_Device_GetSetInterfaceProperty(AudioInterfaceInfo, Property, Entity,
 128                                                                                   Parameter, &ValueLength, Value);
 129                                 }
 130                         }
 131
 132                         break;
 133                 case AUDIO_REQ_GetCurrent:
 134                 case AUDIO_REQ_GetMinimum:
 135                 case AUDIO_REQ_GetMaximum:
 136                 case AUDIO_REQ_GetResolution:
 137                         if (USB_ControlRequest.bmRequestType == (REQDIR_DEVICETOHOST | REQTYPE_CLASS | REQREC_ENDPOINT))
 138                         {
 139                                 uint8_t  EndpointProperty = USB_ControlRequest.bRequest;
 140                                 uint8_t  EndpointAddress  = (uint8_t)USB_ControlRequest.wIndex;
 141                                 uint8_t  EndpointControl  = (USB_ControlRequest.wValue >> 8);
 142                                 uint16_t ValueLength      = USB_ControlRequest.wLength;
 143                                 uint8_t  Value[ValueLength];
 144
 145                                 if (CALLBACK_Audio_Device_GetSetEndpointProperty(AudioInterfaceInfo, EndpointProperty, EndpointAddress,
 146                                                                                  EndpointControl, &ValueLength, Value))
 147                                 {
 148                                         Endpoint_ClearSETUP();
 149                                         Endpoint_Write_Control_Stream_LE(Value, ValueLength);
 150                                         Endpoint_ClearOUT();
 151                                 }
 152                         }
 153                         else if (USB_ControlRequest.bmRequestType == (REQDIR_DEVICETOHOST | REQTYPE_CLASS | REQREC_INTERFACE))
 154                         {
 155                                 uint8_t  Property    = USB_ControlRequest.bRequest;
 156                                 uint8_t  Entity      = (USB_ControlRequest.wIndex >> 8);
 157                                 uint16_t Parameter   = USB_ControlRequest.wValue;
 158                                 uint16_t ValueLength = USB_ControlRequest.wLength;
 159                                 uint8_t  Value[ValueLength];
 160
 161                                 if (CALLBACK_Audio_Device_GetSetInterfaceProperty(AudioInterfaceInfo, Property, Entity,
 162                                                                                   Parameter, &ValueLength, Value))
 163                                 {
 164                                         Endpoint_ClearSETUP();
 165                                         Endpoint_Write_Control_Stream_LE(Value, ValueLength);
 166                                         Endpoint_ClearOUT();
 167                                 }
 168                         }
 169
 170                         break;
 171         }
 172 }
 173
 174 bool Audio_Device_ConfigureEndpoints(USB_ClassInfo_Audio_Device_t* const AudioInterfaceInfo)
 175 {
 176         memset(&AudioInterfaceInfo->State, 0x00, sizeof(AudioInterfaceInfo->State));
 177
 178         for (uint8_t EndpointNum = 1; EndpointNum < ENDPOINT_TOTAL_ENDPOINTS; EndpointNum++)
 179         {
 180                 uint16_t Size;
 181                 uint8_t  Type;
 182                 uint8_t  Direction;
 183                 bool     DoubleBanked;
 184
 185                 if (EndpointNum == AudioInterfaceInfo->Config.DataINEndpointNumber)
 186                 {
 187                         Size         = AudioInterfaceInfo->Config.DataINEndpointSize;
 188                         Direction    = ENDPOINT_DIR_IN;
 189                         Type         = EP_TYPE_ISOCHRONOUS;
 190                         DoubleBanked = true;
 191                 }
 192                 else if (EndpointNum == AudioInterfaceInfo->Config.DataOUTEndpointNumber)
 193                 {
 194                         Size         = AudioInterfaceInfo->Config.DataOUTEndpointSize;
 195                         Direction    = ENDPOINT_DIR_OUT;
 196                         Type         = EP_TYPE_ISOCHRONOUS;
 197                         DoubleBanked = true;
 198                 }
 199                 else
 200                 {
 201                         continue;
 202                 }
 203
 204                 if (!(Endpoint_ConfigureEndpoint(EndpointNum, Type, Direction, Size,
 205                                                  DoubleBanked ? ENDPOINT_BANK_DOUBLE : ENDPOINT_BANK_SINGLE)))
 206                 {
 207                         return false;
 208                 }
 209         }
 210
 211         return true;
 212 }
 213
 214 // cppcheck-suppress unusedFunction
 215 void Audio_Device_Event_Stub(void)
 216 {
 217
 218 }
 219
 220 #endif
 221