protocol/lufa/LUFA-120730/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         }
  55         else if ((USB_ControlRequest.bmRequestType & CONTROL_REQTYPE_RECIPIENT) == REQREC_ENDPOINT)
  56         {
  57                 uint8_t EndpointAddress = (USB_ControlRequest.wIndex & 0xFF);
  58
  59                 if ((EndpointAddress != AudioInterfaceInfo->Config.DataINEndpoint.Address) &&
  60                     (EndpointAddress != AudioInterfaceInfo->Config.DataOUTEndpoint.Address))
  61                 {
  62                         return;
  63                 }
  64         }
  65
  66         switch (USB_ControlRequest.bRequest)
  67         {
  68                 case REQ_SetInterface:
  69                         if (USB_ControlRequest.bmRequestType == (REQDIR_HOSTTODEVICE | REQTYPE_STANDARD | REQREC_INTERFACE))
  70                         {
  71                                 Endpoint_ClearSETUP();
  72                                 Endpoint_ClearStatusStage();
  73
  74                                 AudioInterfaceInfo->State.InterfaceEnabled = ((USB_ControlRequest.wValue & 0xFF) != 0);
  75                                 EVENT_Audio_Device_StreamStartStop(AudioInterfaceInfo);
  76                         }
  77
  78                         break;
  79                 case AUDIO_REQ_GetStatus:
  80                         if ((USB_ControlRequest.bmRequestType == (REQDIR_HOSTTODEVICE | REQTYPE_CLASS | REQREC_INTERFACE)) ||
  81                             (USB_ControlRequest.bmRequestType == (REQDIR_HOSTTODEVICE | REQTYPE_CLASS | REQREC_ENDPOINT)))
  82                         {
  83                                 Endpoint_ClearSETUP();
  84                                 Endpoint_ClearStatusStage();
  85                         }
  86
  87                         break;
  88                 case AUDIO_REQ_SetCurrent:
  89                 case AUDIO_REQ_SetMinimum:
  90                 case AUDIO_REQ_SetMaximum:
  91                 case AUDIO_REQ_SetResolution:
  92                         if ((USB_ControlRequest.bmRequestType & CONTROL_REQTYPE_RECIPIENT) == REQREC_ENDPOINT)
  93                         {
  94                                 uint8_t EndpointProperty = USB_ControlRequest.bRequest;
  95                                 uint8_t EndpointAddress  = (uint8_t)USB_ControlRequest.wIndex;
  96                                 uint8_t EndpointControl  = (USB_ControlRequest.wValue >> 8);
  97
  98                                 if (CALLBACK_Audio_Device_GetSetEndpointProperty(AudioInterfaceInfo, EndpointProperty, EndpointAddress,
  99                                                                                  EndpointControl, NULL, NULL))
 100                                 {
 101                                         uint16_t ValueLength = USB_ControlRequest.wLength;
 102                                         uint8_t  Value[ValueLength];
 103
 104                                         Endpoint_ClearSETUP();
 105                                         Endpoint_Read_Control_Stream_LE(Value, ValueLength);
 106                                         Endpoint_ClearIN();
 107
 108                                         CALLBACK_Audio_Device_GetSetEndpointProperty(AudioInterfaceInfo, EndpointProperty, EndpointAddress,
 109                                                                                      EndpointControl, &ValueLength, Value);
 110                                 }
 111                         }
 112                         else if ((USB_ControlRequest.bmRequestType & CONTROL_REQTYPE_RECIPIENT) == REQREC_INTERFACE)
 113                         {
 114                                 uint8_t  Property  = USB_ControlRequest.bRequest;
 115                                 uint8_t  Entity    = (USB_ControlRequest.wIndex >> 8);
 116                                 uint16_t Parameter = USB_ControlRequest.wValue;
 117
 118                                 if (CALLBACK_Audio_Device_GetSetInterfaceProperty(AudioInterfaceInfo, Property, Entity,
 119                                                                                   Parameter, NULL, NULL))
 120                                 {
 121                                         uint16_t ValueLength = USB_ControlRequest.wLength;
 122                                         uint8_t  Value[ValueLength];
 123
 124                                         Endpoint_ClearSETUP();
 125                                         Endpoint_Read_Control_Stream_LE(Value, ValueLength);
 126                                         Endpoint_ClearIN();
 127
 128                                         CALLBACK_Audio_Device_GetSetInterfaceProperty(AudioInterfaceInfo, Property, Entity,
 129                                                                                   Parameter, &ValueLength, Value);
 130                                 }
 131                         }
 132
 133                         break;
 134                 case AUDIO_REQ_GetCurrent:
 135                 case AUDIO_REQ_GetMinimum:
 136                 case AUDIO_REQ_GetMaximum:
 137                 case AUDIO_REQ_GetResolution:
 138                         if ((USB_ControlRequest.bmRequestType & CONTROL_REQTYPE_RECIPIENT) == REQREC_ENDPOINT)
 139                         {
 140                                 uint8_t  EndpointProperty = USB_ControlRequest.bRequest;
 141                                 uint8_t  EndpointAddress  = (uint8_t)USB_ControlRequest.wIndex;
 142                                 uint8_t  EndpointControl  = (USB_ControlRequest.wValue >> 8);
 143                                 uint16_t ValueLength      = USB_ControlRequest.wLength;
 144                                 uint8_t  Value[ValueLength];
 145
 146                                 if (CALLBACK_Audio_Device_GetSetEndpointProperty(AudioInterfaceInfo, EndpointProperty, EndpointAddress,
 147                                                                                  EndpointControl, &ValueLength, Value))
 148                                 {
 149                                         Endpoint_ClearSETUP();
 150                                         Endpoint_Write_Control_Stream_LE(Value, ValueLength);
 151                                         Endpoint_ClearOUT();
 152                                 }
 153                         }
 154                         else if ((USB_ControlRequest.bmRequestType & CONTROL_REQTYPE_RECIPIENT) == REQREC_INTERFACE)
 155                         {
 156                                 uint8_t  Property    = USB_ControlRequest.bRequest;
 157                                 uint8_t  Entity      = (USB_ControlRequest.wIndex >> 8);
 158                                 uint16_t Parameter   = USB_ControlRequest.wValue;
 159                                 uint16_t ValueLength = USB_ControlRequest.wLength;
 160                                 uint8_t  Value[ValueLength];
 161
 162                                 if (CALLBACK_Audio_Device_GetSetInterfaceProperty(AudioInterfaceInfo, Property, Entity,
 163                                                                                   Parameter, &ValueLength, Value))
 164                                 {
 165                                         Endpoint_ClearSETUP();
 166                                         Endpoint_Write_Control_Stream_LE(Value, ValueLength);
 167                                         Endpoint_ClearOUT();
 168                                 }
 169                         }
 170
 171                         break;
 172         }
 173 }
 174
 175 bool Audio_Device_ConfigureEndpoints(USB_ClassInfo_Audio_Device_t* const AudioInterfaceInfo)
 176 {
 177         memset(&AudioInterfaceInfo->State, 0x00, sizeof(AudioInterfaceInfo->State));
 178
 179         AudioInterfaceInfo->Config.DataINEndpoint.Type  = EP_TYPE_ISOCHRONOUS;
 180         AudioInterfaceInfo->Config.DataOUTEndpoint.Type = EP_TYPE_ISOCHRONOUS;
 181
 182         if (!(Endpoint_ConfigureEndpointTable(&AudioInterfaceInfo->Config.DataINEndpoint, 1)))
 183           return false;
 184
 185         if (!(Endpoint_ConfigureEndpointTable(&AudioInterfaceInfo->Config.DataOUTEndpoint, 1)))
 186           return false;
 187
 188         return true;
 189 }
 190
 191 // cppcheck-suppress unusedFunction
 192 void Audio_Device_Event_Stub(void)
 193 {
 194
 195 }
 196
 197 #endif
 198