/*
             LUFA Library
     Copyright (C) Dean Camera, 2009.
              
  dean [at] fourwalledcubicle [dot] com
      www.fourwalledcubicle.com
*/

/*
  Copyright 2009  Dean Camera (dean [at] fourwalledcubicle [dot] com)

  Permission to use, copy, modify, and distribute this software
  and its documentation for any purpose and without fee is hereby
  granted, 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 disclaim 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.
*/

#include "../../HighLevel/USBMode.h"
#if defined(USB_CAN_BE_HOST)

#define INCLUDE_FROM_SI_CLASS_HOST_C
#include "StillImage.h"

#warning The Still Image Host mode Class driver is currently incomplete and is for preview purposes only.

uint8_t SI_Host_ConfigurePipes(USB_ClassInfo_SI_Host_t* SIInterfaceInfo, uint16_t ConfigDescriptorLength,
                              uint8_t* DeviceConfigDescriptor)
{
	uint8_t  FoundEndpoints = 0;
	
	memset(&SIInterfaceInfo->State, 0x00, sizeof(SIInterfaceInfo->State));
	
	if (DESCRIPTOR_TYPE(DeviceConfigDescriptor) != DTYPE_Configuration)
	  return SI_ENUMERROR_InvalidConfigDescriptor;
	
	if (USB_GetNextDescriptorComp(&ConfigDescriptorLength, &DeviceConfigDescriptor,
	                              DComp_SI_Host_NextSIInterface) != DESCRIPTOR_SEARCH_COMP_Found)
	{
		return SI_ENUMERROR_NoSIInterfaceFound;
	}

	while (FoundEndpoints != (SI_FOUND_EVENTS_IN | SI_FOUND_DATAPIPE_IN | SI_FOUND_DATAPIPE_OUT))
	{
		if (USB_GetNextDescriptorComp(&ConfigDescriptorLength, &DeviceConfigDescriptor,
		                              DComp_SI_Host_NextSIInterfaceEndpoint) != DESCRIPTOR_SEARCH_COMP_Found)
		{
			return SI_ENUMERROR_EndpointsNotFound;
		}
		
		USB_Descriptor_Endpoint_t* EndpointData = DESCRIPTOR_PCAST(DeviceConfigDescriptor, USB_Descriptor_Endpoint_t);

		if ((EndpointData->Attributes & EP_TYPE_MASK) == EP_TYPE_INTERRUPT)
		{
			if (EndpointData->EndpointAddress & ENDPOINT_DESCRIPTOR_DIR_IN)
			{
				Pipe_ConfigurePipe(SIInterfaceInfo->Config.EventsPipeNumber, EP_TYPE_INTERRUPT, PIPE_TOKEN_IN,
								   EndpointData->EndpointAddress, EndpointData->EndpointSize,
								   PIPE_BANK_DOUBLE);			
				SIInterfaceInfo->State.EventsPipeSize = EndpointData->EndpointSize;

				Pipe_SetInterruptPeriod(EndpointData->PollingIntervalMS);
				
				FoundEndpoints |= SI_FOUND_EVENTS_IN;
			}
		}
		else
		{
			if (EndpointData->EndpointAddress & ENDPOINT_DESCRIPTOR_DIR_IN)
			{
				Pipe_ConfigurePipe(SIInterfaceInfo->Config.DataINPipeNumber, EP_TYPE_BULK, PIPE_TOKEN_IN,
								   EndpointData->EndpointAddress, EndpointData->EndpointSize,
								   PIPE_BANK_DOUBLE);
				SIInterfaceInfo->State.DataINPipeSize = EndpointData->EndpointSize;

				FoundEndpoints |= SI_FOUND_DATAPIPE_IN;
			}
			else
			{
				Pipe_ConfigurePipe(SIInterfaceInfo->Config.DataOUTPipeNumber, EP_TYPE_BULK, PIPE_TOKEN_OUT,
								   EndpointData->EndpointAddress, EndpointData->EndpointSize,
								   PIPE_BANK_DOUBLE);
				SIInterfaceInfo->State.DataOUTPipeSize = EndpointData->EndpointSize;

				FoundEndpoints |= SI_FOUND_DATAPIPE_OUT;
			}
		}
	}

	SIInterfaceInfo->State.IsActive = true;
	return SI_ENUMERROR_NoError;
}

uint8_t DComp_SI_Host_NextSIInterface(void* CurrentDescriptor)
{
	if (DESCRIPTOR_TYPE(CurrentDescriptor) == DTYPE_Interface)
	{
		USB_Descriptor_Interface_t* CurrentInterface = DESCRIPTOR_PCAST(CurrentDescriptor,
		                                                                USB_Descriptor_Interface_t);

		if ((CurrentInterface->Class    == STILL_IMAGE_CLASS)    &&
		    (CurrentInterface->SubClass == STILL_IMAGE_SUBCLASS) &&
		    (CurrentInterface->Protocol == STILL_IMAGE_PROTOCOL))
		{
			return DESCRIPTOR_SEARCH_Found;
		}
	}
	
	return DESCRIPTOR_SEARCH_NotFound;
}

uint8_t DComp_SI_Host_NextSIInterfaceEndpoint(void* CurrentDescriptor)
{
	if (DESCRIPTOR_TYPE(CurrentDescriptor) == DTYPE_Endpoint)
	{
		USB_Descriptor_Endpoint_t* CurrentEndpoint = DESCRIPTOR_PCAST(CurrentDescriptor,
		                                                              USB_Descriptor_Endpoint_t);
	
		uint8_t EndpointType = (CurrentEndpoint->Attributes & EP_TYPE_MASK);

		if (((EndpointType == EP_TYPE_BULK) || (EndpointType == EP_TYPE_INTERRUPT)) &&
		    (!(Pipe_IsEndpointBound(CurrentEndpoint->EndpointAddress))))
		{
			return DESCRIPTOR_SEARCH_Found;
		}
	}
	else if (DESCRIPTOR_TYPE(CurrentDescriptor) == DTYPE_Interface)
	{
		return DESCRIPTOR_SEARCH_Fail;
	}

	return DESCRIPTOR_SEARCH_NotFound;
}

void SI_Host_USBTask(USB_ClassInfo_SI_Host_t* SIInterfaceInfo)
{

}

static uint8_t SImage_Host_SendBlockHeader(USB_ClassInfo_SI_Host_t* SIInterfaceInfo, SI_PIMA_Container_t* PIMAHeader)
{
	uint8_t ErrorCode;
	
	PIMAHeader->TransactionID = SIInterfaceInfo->State.TransactionID++;

	Pipe_SelectPipe(SIInterfaceInfo->Config.DataOUTPipeNumber);
	Pipe_Unfreeze();

	if ((ErrorCode = Pipe_Write_Stream_LE(PIMAHeader, PIMA_COMMAND_SIZE(0), NO_STREAM_CALLBACK)) != PIPE_RWSTREAM_NoError)
	  return ErrorCode;
	
	uint8_t ParamBytes = (PIMAHeader->DataLength - PIMA_COMMAND_SIZE(0));

	if (ParamBytes)
	{
		if ((ErrorCode = Pipe_Write_Stream_LE(&PIMAHeader->Params, ParamBytes, NO_STREAM_CALLBACK)) != PIPE_RWSTREAM_NoError)
		  return ErrorCode;
	}
	
	Pipe_ClearOUT();	
	Pipe_Freeze();
	
	return PIPE_RWSTREAM_NoError;
}

static uint8_t SImage_Host_ReceiveBlockHeader(USB_ClassInfo_SI_Host_t* SIInterfaceInfo, SI_PIMA_Container_t* PIMAHeader)
{
	uint16_t TimeoutMSRem = COMMAND_DATA_TIMEOUT_MS;

	Pipe_SelectPipe(SIInterfaceInfo->Config.DataINPipeNumber);
	Pipe_Unfreeze();
	
	while (!(Pipe_IsReadWriteAllowed()))
	{
		if (USB_INT_HasOccurred(USB_INT_HSOFI))
		{
			USB_INT_Clear(USB_INT_HSOFI);
			TimeoutMSRem--;

			if (!(TimeoutMSRem))
			{
				return PIPE_RWSTREAM_Timeout;
			}
		}
		
		Pipe_Freeze();
		Pipe_SelectPipe(SIInterfaceInfo->Config.DataOUTPipeNumber);
		Pipe_Unfreeze();

		if (Pipe_IsStalled())
		{
			USB_Host_ClearPipeStall(SIInterfaceInfo->Config.DataOUTPipeNumber);
			return PIPE_RWSTREAM_PipeStalled;
		}

		Pipe_Freeze();
		Pipe_SelectPipe(SIInterfaceInfo->Config.DataINPipeNumber);
		Pipe_Unfreeze();

		if (Pipe_IsStalled())
		{
			USB_Host_ClearPipeStall(SIInterfaceInfo->Config.DataINPipeNumber);
			return PIPE_RWSTREAM_PipeStalled;
		}
		  
		if (USB_HostState == HOST_STATE_Unattached)
		  return PIPE_RWSTREAM_DeviceDisconnected;
	}
	
	Pipe_Read_Stream_LE(PIMAHeader, PIMA_COMMAND_SIZE(0), NO_STREAM_CALLBACK);
	
	if (PIMAHeader->Type == CType_ResponseBlock)
	{
		uint8_t ParamBytes = (PIMAHeader->DataLength - PIMA_COMMAND_SIZE(0));

		if (ParamBytes)
		  Pipe_Read_Stream_LE(&PIMAHeader->Params, ParamBytes, NO_STREAM_CALLBACK);
		
		Pipe_ClearIN();
		
		PIMAHeader->Code &= 0x0000000F;
	}
	
	Pipe_Freeze();
	
	return PIPE_RWSTREAM_NoError;
}

static uint8_t SImage_Host_SendData(USB_ClassInfo_SI_Host_t* SIInterfaceInfo, void* Buffer, uint16_t Bytes)
{
	uint8_t ErrorCode;

	Pipe_SelectPipe(SIInterfaceInfo->Config.DataOUTPipeNumber);
	Pipe_Unfreeze();
	
	ErrorCode = Pipe_Write_Stream_LE(Buffer, Bytes, NO_STREAM_CALLBACK);

	Pipe_ClearOUT();
	Pipe_Freeze();
	
	return ErrorCode;
}

static uint8_t SImage_Host_ReadData(USB_ClassInfo_SI_Host_t* SIInterfaceInfo, void* Buffer, uint16_t Bytes)
{
	uint8_t ErrorCode;

	Pipe_SelectPipe(SIInterfaceInfo->Config.DataINPipeNumber);
	Pipe_Unfreeze();

	ErrorCode = Pipe_Read_Stream_LE(Buffer, Bytes, NO_STREAM_CALLBACK);

	Pipe_Freeze();
	
	return ErrorCode;
}

static bool SImage_Host_IsEventReceived(USB_ClassInfo_SI_Host_t* SIInterfaceInfo)
{
	bool IsEventReceived = false;

	Pipe_SelectPipe(SIInterfaceInfo->Config.EventsPipeNumber);
	Pipe_Unfreeze();
	
	if (Pipe_BytesInPipe())
	  IsEventReceived = true;
	
	Pipe_Freeze();
	
	return IsEventReceived;
}

static uint8_t SImage_Host_ReceiveEventHeader(USB_ClassInfo_SI_Host_t* SIInterfaceInfo, SI_PIMA_Container_t* PIMAHeader)
{
	uint8_t ErrorCode;

	Pipe_SelectPipe(SIInterfaceInfo->Config.EventsPipeNumber);
	Pipe_Unfreeze();
	
	ErrorCode = Pipe_Read_Stream_LE(PIMAHeader, sizeof(SI_PIMA_Container_t), NO_STREAM_CALLBACK);
	
	Pipe_ClearIN();
	Pipe_Freeze();
	
	return ErrorCode;
}

uint8_t SImage_Host_OpenSession(USB_ClassInfo_SI_Host_t* SIInterfaceInfo)
{
	if ((USB_HostState != HOST_STATE_Configured) || !(SIInterfaceInfo->State.IsActive))
	  return HOST_SENDCONTROL_DeviceDisconnect;

	uint8_t ErrorCode;

	SI_PIMA_Container_t PIMABlock = (SI_PIMA_Container_t)
							{
								.DataLength    = PIMA_COMMAND_SIZE(0),
								.Type          = CType_CommandBlock,
								.Code          = 0x1002,
								.Params        = {},
							};
							
	if ((ErrorCode = SImage_Host_SendBlockHeader(SIInterfaceInfo, &PIMABlock)) != PIPE_RWSTREAM_NoError)
	  return ErrorCode;
	  
	if ((ErrorCode = SImage_Host_ReceiveBlockHeader(SIInterfaceInfo, &PIMABlock)) != PIPE_RWSTREAM_NoError)
	  return ErrorCode;
	  
	SIInterfaceInfo->State.TransactionID = 0;
	SIInterfaceInfo->State.IsSessionOpen = true;

	return PIPE_RWSTREAM_NoError;
}

uint8_t SImage_Host_CloseSession(USB_ClassInfo_SI_Host_t* SIInterfaceInfo)
{
	if ((USB_HostState != HOST_STATE_Configured) || !(SIInterfaceInfo->State.IsActive))
	  return HOST_SENDCONTROL_DeviceDisconnect;

	uint8_t ErrorCode;

	SI_PIMA_Container_t PIMABlock = (SI_PIMA_Container_t)
							{
								.DataLength    = PIMA_COMMAND_SIZE(0),
								.Type          = CType_CommandBlock,
								.Code          = 0x1003,
								.Params        = {},
							};
							
	if ((ErrorCode = SImage_Host_SendBlockHeader(SIInterfaceInfo, &PIMABlock)) != PIPE_RWSTREAM_NoError)
	  return ErrorCode;
	  
	if ((ErrorCode = SImage_Host_ReceiveBlockHeader(SIInterfaceInfo, &PIMABlock)) != PIPE_RWSTREAM_NoError)
	  return ErrorCode;

	SIInterfaceInfo->State.IsSessionOpen = false;

	if ((PIMABlock.Type != CType_ResponseBlock) || (PIMABlock.Code != 0x2001))
	  return SI_ERROR_LOGICAL_CMD_FAILED;

	return PIPE_RWSTREAM_NoError;
}

uint8_t SImage_Host_SendCommand(USB_ClassInfo_SI_Host_t* SIInterfaceInfo, uint16_t Operation, uint8_t UsedParams,
                                uint32_t Param1, uint32_t Param2, uint32_t Param3, void* DataBuff)
{
	if ((USB_HostState != HOST_STATE_Configured) || !(SIInterfaceInfo->State.IsActive))
	  return HOST_SENDCONTROL_DeviceDisconnect;

	uint8_t ErrorCode;

	SI_PIMA_Container_t PIMABlock = (SI_PIMA_Container_t)
							{
								.DataLength    = PIMA_COMMAND_SIZE(UsedParams),
								.Type          = CType_CommandBlock,
								.Code          = Operation,
								.Params        = {Param1, Param2, Param3},
							};
							
	if ((ErrorCode = SImage_Host_SendBlockHeader(SIInterfaceInfo, &PIMABlock)) != PIPE_RWSTREAM_NoError)
	  return ErrorCode;
	  
	if ((ErrorCode = SImage_Host_ReceiveBlockHeader(SIInterfaceInfo, &PIMABlock)) != PIPE_RWSTREAM_NoError)
	  return ErrorCode;

	if ((PIMABlock.Type != CType_ResponseBlock) || (PIMABlock.Code != 0x2001))
	  return SI_ERROR_LOGICAL_CMD_FAILED;

	return PIPE_RWSTREAM_NoError;
}

#endif