/*
 * @brief Host mode driver for the library USB Printer Class driver
 *
 * @note
 * Copyright(C) NXP Semiconductors, 2012
 * Copyright(C) Dean Camera, 2011, 2012
 * All rights reserved.
 *
 * @par
 * Software that is described herein is for illustrative purposes only
 * which provides customers with programming information regarding the
 * LPC products.  This software is supplied "AS IS" without any warranties of
 * any kind, and NXP Semiconductors and its licensor disclaim any and
 * all warranties, express or implied, including all implied warranties of
 * merchantability, fitness for a particular purpose and non-infringement of
 * intellectual property rights.  NXP Semiconductors assumes no responsibility
 * or liability for the use of the software, conveys no license or rights under any
 * patent, copyright, mask work right, or any other intellectual property rights in
 * or to any products. NXP Semiconductors reserves the right to make changes
 * in the software without notification. NXP Semiconductors also makes no
 * representation or warranty that such application will be suitable for the
 * specified use without further testing or modification.
 *
 * @par
 * Permission to use, copy, modify, and distribute this software and its
 * documentation is hereby granted, under NXP Semiconductors' and its
 * licensor's relevant copyrights in the software, without fee, provided that it
 * is used in conjunction with NXP Semiconductors microcontrollers.  This
 * copyright, permission, and disclaimer notice must appear in all copies of
 * this code.
 */

/** @ingroup Group_USBClassPrinter
 *  @defgroup Group_USBClassPrinterHost Printer Class Host Mode Driver
 *
 *  @section Sec_Dependencies Module Source Dependencies
 *  The following files must be built with any user project that uses this module:
 *    - LPCUSBlib/Drivers/USB/Class/Host/Printer.c <i>(Makefile source module name: LPCUSBlib_SRC_USBCLASS)</i>
 *
 *  @section Sec_ModDescription Module Description
 *  Host Mode USB Class driver framework interface, for the Printer USB Class driver.
 *
 *  @{
 */

#ifndef __PRINTER_CLASS_HOST_H__
#define __PRINTER_CLASS_HOST_H__

	/* Includes: */
		#include "../../USB.h"
		#include "../Common/PrinterClassCommon.h"

	/* Enable C linkage for C++ Compilers: */
		#if defined(__cplusplus)
			extern "C" {
		#endif

	/* Preprocessor Checks: */
		#if !defined(__INCLUDE_FROM_PRINTER_DRIVER)
			#error Do not include this file directly. Include LPCUSBlib/Drivers/USB.h instead.
		#endif

	/* Public Interface - May be used in end-application: */
		/* Type Defines: */
			/** @brief Printer Class Host Mode Configuration and State Structure.
			 *
			 *  Class state structure. An instance of this structure should be made within the user application,
			 *  and passed to each of the Printer class driver functions as the \c PRNTInterfaceInfo parameter. This
			 *  stores each Printer interface's configuration and state information.
			 */
			typedef struct
			{
				const struct
				{
					uint8_t  DataINPipeNumber; /**< Pipe number of the Printer interface's IN data pipe. */
					bool     DataINPipeDoubleBank; /**< Indicates if the Printer interface's IN data pipe should use double banking. */

					uint8_t  DataOUTPipeNumber; /**< Pipe number of the Printer interface's OUT data pipe. */
					bool     DataOUTPipeDoubleBank; /**< Indicates if the Printer interface's OUT data pipe should use double banking. */
					uint8_t  PortNumber;		/**< Port number that this interface is running.
												*/
				} Config; /**< Config data for the USB class interface within the device. All elements in this section
				           *   <b>must</b> be set or the interface will fail to enumerate and operate correctly.
				           */
				struct
				{
					bool IsActive; /**< Indicates if the current interface instance is connected to an attached device, valid
					                *   after @ref PRNT_Host_ConfigurePipes() is called and the Host state machine is in the
					                *   Configured state.
					                */
					uint8_t InterfaceNumber; /**< Interface index of the Printer interface within the attached device. */
					uint8_t AlternateSetting; /**< Alternate setting within the Printer Interface in the attached device. */

					uint16_t DataINPipeSize; /**< Size in bytes of the Printer interface's IN data pipe. */
					uint16_t DataOUTPipeSize;  /**< Size in bytes of the Printer interface's OUT data pipe. */
				} State; /**< State data for the USB class interface within the device. All elements in this section
						  *   <b>may</b> be set to initial values, but may also be ignored to default to sane values when
						  *   the interface is enumerated.
						  */
			} USB_ClassInfo_PRNT_Host_t;

		/* Enums: */
			enum PRNT_Host_EnumerationFailure_ErrorCodes_t
			{
				PRNT_ENUMERROR_NoError                    = 0, /**< Configuration Descriptor was processed successfully. */
				PRNT_ENUMERROR_InvalidConfigDescriptor    = 1, /**< The device returned an invalid Configuration Descriptor. */
				PRNT_ENUMERROR_NoCompatibleInterfaceFound = 2, /**< A compatible Printer interface was not found in the device's Configuration Descriptor. */
				PRNT_ENUMERROR_PipeConfigurationFailed    = 3, /**< One or more pipes for the specified interface could not be configured correctly. */
			};

		/* Function Prototypes: */
			/** @brief Host interface configuration routine, to configure a given Printer host interface instance using the
			 *  Configuration Descriptor read from an attached USB device. This function automatically updates the given Printer
			 *  instance's state values and configures the pipes required to communicate with the interface if it is found within
			 *  the device. This should be called once after the stack has enumerated the attached device, while the host state
			 *  machine is in the Addressed state.
			 *
			 *  @param PRNTInterfaceInfo      : Pointer to a structure containing a Printer Class host configuration and state.
			 *  @param ConfigDescriptorSize   : Length of the attached device's Configuration Descriptor.
			 *  @param DeviceConfigDescriptor : Pointer to a buffer containing the attached device's Configuration Descriptor.
			 *
			 *  @return A value from the @ref PRNT_Host_EnumerationFailure_ErrorCodes_t enum.
			 */
			uint8_t PRNT_Host_ConfigurePipes(USB_ClassInfo_PRNT_Host_t* const PRNTInterfaceInfo,
			                                 uint16_t ConfigDescriptorSize,
			                                 void* DeviceConfigDescriptor) ATTR_NON_NULL_PTR_ARG(1) ATTR_NON_NULL_PTR_ARG(3);

			/** @brief General management task for a given Printer host class interface, required for the correct operation of
			 *  the interface. This should be called frequently in the main program loop, before the master USB management task
			 *  @ref USB_USBTask().
			 *
			 *  @param PRNTInterfaceInfo  : Pointer to a structure containing a Printer Class host configuration and state.
			 *	@return	Nothing
			 */
			void PRNT_Host_USBTask(USB_ClassInfo_PRNT_Host_t* const PRNTInterfaceInfo) ATTR_NON_NULL_PTR_ARG(1);

			/** @brief Configures the printer to enable Bidirectional mode, if it is not already in this mode. This should be called
			 *  once the connected device's configuration has been set, to ensure the printer is ready to accept commands.
			 *
			 *  @param PRNTInterfaceInfo : Pointer to a structure containing a Printer Class host configuration and state.
			 *
			 *  @return A value from the @ref USB_Host_SendControlErrorCodes_t enum.
			 */
			uint8_t PRNT_Host_SetBidirectionalMode(USB_ClassInfo_PRNT_Host_t* const PRNTInterfaceInfo) ATTR_NON_NULL_PTR_ARG(1);

			/** @brief Retrieves the status of the virtual Printer port's inbound status lines. The result can then be masked against the
			 *  \c PRNT_PORTSTATUS_* macros to determine the printer port's status.
			 *
			 *  @param PRNTInterfaceInfo : Pointer to a structure containing a Printer Class host configuration and state.
			 *  @param PortStatus        : Location where the retrieved port status should be stored.
			 *
			 *  @return A value from the @ref USB_Host_SendControlErrorCodes_t enum.
			 */
			uint8_t PRNT_Host_GetPortStatus(USB_ClassInfo_PRNT_Host_t* const PRNTInterfaceInfo,
			                                uint8_t* const PortStatus)
			                                ATTR_NON_NULL_PTR_ARG(1) ATTR_NON_NULL_PTR_ARG(2);

			/** @brief Soft-resets the attached printer, readying it for new commands.
			 *
			 *  @param PRNTInterfaceInfo : Pointer to a structure containing a Printer Class host configuration and state.
			 *
			 *  @return A value from the @ref USB_Host_SendControlErrorCodes_t enum.
			 */
			uint8_t PRNT_Host_SoftReset(USB_ClassInfo_PRNT_Host_t* const PRNTInterfaceInfo) ATTR_NON_NULL_PTR_ARG(1);

			/** @brief Flushes any data waiting to be sent, ensuring that the send buffer is cleared.
			 *
			 *  @pre This function must only be called when the Host state machine is in the @ref HOST_STATE_Configured state or the
			 *       call will fail.
			 *
			 *  @param PRNTInterfaceInfo : Pointer to a structure containing a Printer Class host configuration and state.
			 *
			 *  @return A value from the @ref Pipe_WaitUntilReady_ErrorCodes_t enum.
			 */
			uint8_t PRNT_Host_Flush(USB_ClassInfo_PRNT_Host_t* const PRNTInterfaceInfo) ATTR_NON_NULL_PTR_ARG(1);

			/** @brief Sends the given null terminated string to the attached printer's input endpoint.
			 *
			 *  @pre This function must only be called when the Host state machine is in the @ref HOST_STATE_Configured state or the
			 *       call will fail.
			 *
			 *  @param PRNTInterfaceInfo : Pointer to a structure containing a Printer Class host configuration and state.
			 *  @param String            : Pointer to a null terminated string to send.
			 *
			 *  @return A value from the @ref Pipe_Stream_RW_ErrorCodes_t enum.
			 */
			uint8_t PRNT_Host_SendString(USB_ClassInfo_PRNT_Host_t* const PRNTInterfaceInfo,
			                             void* String) ATTR_NON_NULL_PTR_ARG(1) ATTR_NON_NULL_PTR_ARG(2);

			/** @brief Sends the given raw data stream to the attached printer's input endpoint. This should contain commands that the
			 *  printer is able to understand - for example, PCL data. Not all printers accept all printer languages; see
			 *  @ref PRNT_Host_GetDeviceID() for details on determining acceptable languages for an attached printer.
			 *
			 *  @pre This function must only be called when the Host state machine is in the @ref HOST_STATE_Configured state or the
			 *       call will fail.
			 *
			 *  @param PRNTInterfaceInfo : Pointer to a structure containing a Printer Class host configuration and state.
			 *  @param Buffer            : Pointer to a buffer containing the raw command stream to send to the printer.
			 *  @param Length            : Size in bytes of the command stream to be sent.
			 *
			 *  @return A value from the @ref Pipe_Stream_RW_ErrorCodes_t enum.
			 */
			uint8_t PRNT_Host_SendData(USB_ClassInfo_PRNT_Host_t* const PRNTInterfaceInfo,
			                           void* Buffer,
			                           const uint16_t Length) ATTR_NON_NULL_PTR_ARG(1) ATTR_NON_NULL_PTR_ARG(2);

			/** @brief Sends a given byte to the attached USB device, if connected. If a device is not connected when the function is called, the
			 *  byte is discarded. Bytes will be queued for transmission to the device until either the pipe bank becomes full, or the
			 *  @ref PRNT_Host_Flush() function is called to flush the pending data to the host. This allows for multiple bytes to be
			 *  packed into a single pipe packet, increasing data throughput.
			 *
			 *  @pre This function must only be called when the Host state machine is in the @ref HOST_STATE_Configured state or the
			 *       call will fail.
			 *
			 *  @param PRNTInterfaceInfo : Pointer to a structure containing a Printer Class host configuration and state.
			 *  @param Data              : Byte of data to send to the device.
			 *
			 *  @return A value from the @ref Pipe_WaitUntilReady_ErrorCodes_t enum.
			 */
			uint8_t PRNT_Host_SendByte(USB_ClassInfo_PRNT_Host_t* const PRNTInterfaceInfo,
			                           const uint8_t Data) ATTR_NON_NULL_PTR_ARG(1);

			/** @brief Determines the number of bytes received by the printer interface from the device, waiting to be read. This indicates the number
			 *  of bytes in the IN pipe bank only, and thus the number of calls to @ref PRNT_Host_ReceiveByte() which are guaranteed to succeed
			 *  immediately. If multiple bytes are to be received, they should be buffered by the user application, as the pipe bank will not be
			 *  released back to the USB controller until all bytes are read.
			 *
			 *  @pre This function must only be called when the Host state machine is in the @ref HOST_STATE_Configured state or the
			 *       call will fail.
			 *
			 *  @param PRNTInterfaceInfo : Pointer to a structure containing a Printer Class host configuration and state.
			 *
			 *  @return Total number of buffered bytes received from the device.
			 */
			uint16_t PRNT_Host_BytesReceived(USB_ClassInfo_PRNT_Host_t* const PRNTInterfaceInfo);

			/** @brief Reads a byte of data from the device. If no data is waiting to be read of if a USB device is not connected, the function
			 *  returns a negative value. The @ref PRNT_Host_BytesReceived() function may be queried in advance to determine how many bytes
			 *  are currently buffered in the Printer interface's data receive pipe.
			 *
			 *  @pre This function must only be called when the Host state machine is in the @ref HOST_STATE_Configured state or the
			 *       call will fail.
			 *
			 *  @param PRNTInterfaceInfo : Pointer to a structure containing a Printer Class host configuration and state.
			 *
			 *  @return Next received byte from the device, or a negative value if no data received.
			 */
			int16_t PRNT_Host_ReceiveByte(USB_ClassInfo_PRNT_Host_t* const PRNTInterfaceInfo);

			/** @brief Retrieves the attached printer device's ID string, formatted according to IEEE 1284. This string is sent as a
			 *  Unicode string from the device and is automatically converted to an ASCII encoded C string by this function, thus
			 *  the maximum reportable string length is two less than the size given (to accommodate the Unicode string length
			 *  bytes which are removed).
			 *
			 *  This string, when supported, contains the model, manufacturer and acceptable printer languages for the attached device.
			 *
			 *  @param PRNTInterfaceInfo : Pointer to a structure containing a Printer Class host configuration and state.
			 *  @param DeviceIDString    : Pointer to a buffer where the Device ID string should be stored, in ASCII format.
			 *  @param BufferSize        : Size in bytes of the buffer allocated for the Device ID string.
			 *
			 *  @return A value from the @ref Pipe_Stream_RW_ErrorCodes_t enum.
			 */
			uint8_t PRNT_Host_GetDeviceID(USB_ClassInfo_PRNT_Host_t* const PRNTInterfaceInfo,
			                              char* const DeviceIDString,
			                              const uint16_t BufferSize) ATTR_NON_NULL_PTR_ARG(1) ATTR_NON_NULL_PTR_ARG(2);

	/* Private Interface - For use in library only: */
	#if !defined(__DOXYGEN__)
		/* Function Prototypes: */
			#if defined(__INCLUDE_FROM_PRINTER_HOST_C)
				static uint8_t DCOMP_PRNT_Host_NextPRNTInterface(void* const CurrentDescriptor)
				                                                 ATTR_WARN_UNUSED_RESULT ATTR_NON_NULL_PTR_ARG(1);
				static uint8_t DCOMP_PRNT_Host_NextPRNTInterfaceEndpoint(void* const CurrentDescriptor)
				                                                         ATTR_WARN_UNUSED_RESULT ATTR_NON_NULL_PTR_ARG(1);
			#endif
	#endif

	/* Disable C linkage for C++ Compilers: */
		#if defined(__cplusplus)
			}
		#endif

#endif

/** @} */