1 files changed, 223 insertions, 0 deletions

diff --git a/lib/lufa/LUFA/Drivers/USB/Class/Host/AudioClassHost.c b/lib/lufa/LUFA/Drivers/USB/Class/Host/AudioClassHost.c
new file mode 100644
index 000000000..9f1a6dc2c
--- /dev/null
+++ b/lib/lufa/LUFA/Drivers/USB/Class/Host/AudioClassHost.c
@@ -0,0 +1,223 @@
+/*
+             LUFA Library
+     Copyright (C) Dean Camera, 2017.
+
+  dean [at] fourwalledcubicle [dot] com
+           www.lufa-lib.org
+*/
+
+/*
+  Copyright 2017  Dean Camera (dean [at] fourwalledcubicle [dot] com)
+
+  Permission to use, copy, modify, distribute, and sell this
+  software and its documentation for any purpose is hereby granted
+  without fee, provided that the above copyright notice appear in
+  all copies and that both that the copyright notice and this
+  permission notice and warranty disclaimer appear in supporting
+  documentation, and that the name of the author not be used in
+  advertising or publicity pertaining to distribution of the
+  software without specific, written prior permission.
+
+  The author disclaims all warranties with regard to this
+  software, including all implied warranties of merchantability
+  and fitness.  In no event shall the author be liable for any
+  special, indirect or consequential damages or any damages
+  whatsoever resulting from loss of use, data or profits, whether
+  in an action of contract, negligence or other tortious action,
+  arising out of or in connection with the use or performance of
+  this software.
+*/
+
+#define  __INCLUDE_FROM_USB_DRIVER
+#include "../../Core/USBMode.h"
+
+#if defined(USB_CAN_BE_HOST)
+
+#define  __INCLUDE_FROM_AUDIO_DRIVER
+#define  __INCLUDE_FROM_AUDIO_HOST_C
+#include "AudioClassHost.h"
+
+uint8_t Audio_Host_ConfigurePipes(USB_ClassInfo_Audio_Host_t* const AudioInterfaceInfo,
+                                  uint16_t ConfigDescriptorSize,
+                                  void* ConfigDescriptorData)
+{
+        USB_Descriptor_Endpoint_t*  DataINEndpoint          = NULL;
+        USB_Descriptor_Endpoint_t*  DataOUTEndpoint         = NULL;
+        USB_Descriptor_Interface_t* AudioControlInterface   = NULL;
+        USB_Descriptor_Interface_t* AudioStreamingInterface = NULL;
+
+        memset(&AudioInterfaceInfo->State, 0x00, sizeof(AudioInterfaceInfo->State));
+
+        if (DESCRIPTOR_TYPE(ConfigDescriptorData) != DTYPE_Configuration)
+          return AUDIO_ENUMERROR_InvalidConfigDescriptor;
+
+        while ((AudioInterfaceInfo->Config.DataINPipe.Address  && !(DataINEndpoint)) ||
+               (AudioInterfaceInfo->Config.DataOUTPipe.Address && !(DataOUTEndpoint)))
+        {
+                if (!(AudioControlInterface) ||
+                    USB_GetNextDescriptorComp(&ConfigDescriptorSize, &ConfigDescriptorData,
+                                              DCOMP_Audio_Host_NextAudioInterfaceDataEndpoint) != DESCRIPTOR_SEARCH_COMP_Found)
+                {
+                        if (!(AudioControlInterface) ||
+                            USB_GetNextDescriptorComp(&ConfigDescriptorSize, &ConfigDescriptorData,
+                                                      DCOMP_Audio_Host_NextAudioStreamInterface) != DESCRIPTOR_SEARCH_COMP_Found)
+                        {
+                                if (USB_GetNextDescriptorComp(&ConfigDescriptorSize, &ConfigDescriptorData,
+                                                              DCOMP_Audio_Host_NextAudioControlInterface) != DESCRIPTOR_SEARCH_COMP_Found)
+                                {
+                                        return AUDIO_ENUMERROR_NoCompatibleInterfaceFound;
+                                }
+
+                                AudioControlInterface = DESCRIPTOR_PCAST(ConfigDescriptorData, USB_Descriptor_Interface_t);
+
+                                if (USB_GetNextDescriptorComp(&ConfigDescriptorSize, &ConfigDescriptorData,
+                                                              DCOMP_Audio_Host_NextAudioStreamInterface) != DESCRIPTOR_SEARCH_COMP_Found)
+                                {
+                                        return AUDIO_ENUMERROR_NoCompatibleInterfaceFound;
+                                }
+                        }
+
+                        AudioStreamingInterface = DESCRIPTOR_PCAST(ConfigDescriptorData, USB_Descriptor_Interface_t);
+
+                        DataINEndpoint  = NULL;
+                        DataOUTEndpoint = NULL;
+
+                        continue;
+                }
+
+                USB_Descriptor_Endpoint_t* EndpointData = DESCRIPTOR_PCAST(ConfigDescriptorData, USB_Descriptor_Endpoint_t);
+
+                if ((EndpointData->EndpointAddress & ENDPOINT_DIR_MASK) == ENDPOINT_DIR_IN)
+                  DataINEndpoint  = EndpointData;
+                else
+                  DataOUTEndpoint = EndpointData;
+        }
+
+        AudioInterfaceInfo->Config.DataINPipe.Size   = le16_to_cpu(DataINEndpoint->EndpointSize);
+        AudioInterfaceInfo->Config.DataINPipe.EndpointAddress = DataINEndpoint->EndpointAddress;
+        AudioInterfaceInfo->Config.DataINPipe.Type   = EP_TYPE_ISOCHRONOUS;
+        AudioInterfaceInfo->Config.DataINPipe.Banks  = 2;
+
+        AudioInterfaceInfo->Config.DataOUTPipe.Size  = le16_to_cpu(DataOUTEndpoint->EndpointSize);
+        AudioInterfaceInfo->Config.DataOUTPipe.EndpointAddress = DataOUTEndpoint->EndpointAddress;
+        AudioInterfaceInfo->Config.DataOUTPipe.Type  = EP_TYPE_ISOCHRONOUS;
+        AudioInterfaceInfo->Config.DataOUTPipe.Banks = 2;
+
+        if (!(Pipe_ConfigurePipeTable(&AudioInterfaceInfo->Config.DataINPipe, 1)))
+          return AUDIO_ENUMERROR_PipeConfigurationFailed;
+
+        if (!(Pipe_ConfigurePipeTable(&AudioInterfaceInfo->Config.DataOUTPipe, 1)))
+          return AUDIO_ENUMERROR_PipeConfigurationFailed;
+
+        AudioInterfaceInfo->State.ControlInterfaceNumber    = AudioControlInterface->InterfaceNumber;
+        AudioInterfaceInfo->State.StreamingInterfaceNumber  = AudioStreamingInterface->InterfaceNumber;
+        AudioInterfaceInfo->State.EnabledStreamingAltIndex  = AudioStreamingInterface->AlternateSetting;
+        AudioInterfaceInfo->State.IsActive = true;
+
+        return AUDIO_ENUMERROR_NoError;
+}
+
+static uint8_t DCOMP_Audio_Host_NextAudioControlInterface(void* CurrentDescriptor)
+{
+        USB_Descriptor_Header_t* Header = DESCRIPTOR_PCAST(CurrentDescriptor, USB_Descriptor_Header_t);
+
+        if (Header->Type == DTYPE_Interface)
+        {
+                USB_Descriptor_Interface_t* Interface = DESCRIPTOR_PCAST(CurrentDescriptor, USB_Descriptor_Interface_t);
+
+                if ((Interface->Class    == AUDIO_CSCP_AudioClass) &&
+                    (Interface->SubClass == AUDIO_CSCP_ControlSubclass) &&
+                    (Interface->Protocol == AUDIO_CSCP_ControlProtocol))
+                {
+                        return DESCRIPTOR_SEARCH_Found;
+                }
+        }
+
+        return DESCRIPTOR_SEARCH_NotFound;
+}
+
+static uint8_t DCOMP_Audio_Host_NextAudioStreamInterface(void* CurrentDescriptor)
+{
+        USB_Descriptor_Header_t* Header = DESCRIPTOR_PCAST(CurrentDescriptor, USB_Descriptor_Header_t);
+
+        if (Header->Type == DTYPE_Interface)
+        {
+                USB_Descriptor_Interface_t* Interface = DESCRIPTOR_PCAST(CurrentDescriptor, USB_Descriptor_Interface_t);
+
+                if ((Interface->Class    == AUDIO_CSCP_AudioClass) &&
+                    (Interface->SubClass == AUDIO_CSCP_AudioStreamingSubclass) &&
+                    (Interface->Protocol == AUDIO_CSCP_StreamingProtocol))
+                {
+                        return DESCRIPTOR_SEARCH_Found;
+                }
+        }
+
+        return DESCRIPTOR_SEARCH_NotFound;
+}
+
+static uint8_t DCOMP_Audio_Host_NextAudioInterfaceDataEndpoint(void* CurrentDescriptor)
+{
+        USB_Descriptor_Header_t* Header = DESCRIPTOR_PCAST(CurrentDescriptor, USB_Descriptor_Header_t);
+
+        if (Header->Type == DTYPE_Endpoint)
+        {
+                USB_Descriptor_Endpoint_t* Endpoint = DESCRIPTOR_PCAST(CurrentDescriptor, USB_Descriptor_Endpoint_t);
+
+                if ((Endpoint->Attributes & EP_TYPE_MASK) == EP_TYPE_ISOCHRONOUS)
+                  return DESCRIPTOR_SEARCH_Found;
+        }
+        else if (Header->Type == DTYPE_Interface)
+        {
+                return DESCRIPTOR_SEARCH_Fail;
+        }
+
+        return DESCRIPTOR_SEARCH_NotFound;
+}
+
+uint8_t Audio_Host_StartStopStreaming(USB_ClassInfo_Audio_Host_t* const AudioInterfaceInfo,
+                                                  const bool EnableStreaming)
+{
+        if (!(AudioInterfaceInfo->State.IsActive))
+          return HOST_SENDCONTROL_DeviceDisconnected;
+
+        return USB_Host_SetInterfaceAltSetting(AudioInterfaceInfo->State.StreamingInterfaceNumber,
+                                               EnableStreaming ? AudioInterfaceInfo->State.EnabledStreamingAltIndex : 0);
+}
+
+uint8_t Audio_Host_GetSetEndpointProperty(USB_ClassInfo_Audio_Host_t* const AudioInterfaceInfo,
+                                                      const uint8_t DataPipeIndex,
+                                                      const uint8_t EndpointProperty,
+                                                      const uint8_t EndpointControl,
+                                                      const uint16_t DataLength,
+                                                      void* const Data)
+{
+        if (!(AudioInterfaceInfo->State.IsActive))
+          return HOST_SENDCONTROL_DeviceDisconnected;
+
+        uint8_t RequestType;
+        uint8_t EndpointAddress;
+
+        if (EndpointProperty & 0x80)
+          RequestType = (REQDIR_DEVICETOHOST | REQTYPE_CLASS | REQREC_ENDPOINT);
+        else
+          RequestType = (REQDIR_HOSTTODEVICE | REQTYPE_CLASS | REQREC_ENDPOINT);
+
+        Pipe_SelectPipe(DataPipeIndex);
+        EndpointAddress = Pipe_GetBoundEndpointAddress();
+
+        USB_ControlRequest = (USB_Request_Header_t)
+                {
+                        .bmRequestType = RequestType,
+                        .bRequest      = EndpointProperty,
+                        .wValue        = ((uint16_t)EndpointControl << 8),
+                        .wIndex        = EndpointAddress,
+                        .wLength       = DataLength,
+                };
+
+        Pipe_SelectPipe(PIPE_CONTROLPIPE);
+
+        return USB_Host_SendControlRequest(Data);
+}
+
+#endif
+