Now includes LUFA-120730 in repository

1 files changed, 411 insertions, 0 deletions

diff --git a/protocol/lufa/LUFA-120730/LUFA/Drivers/USB/Class/Host/AudioClassHost.h b/protocol/lufa/LUFA-120730/LUFA/Drivers/USB/Class/Host/AudioClassHost.h
new file mode 100644
index 0000000000..6cb78a6210
--- /dev/null
+++ b/protocol/lufa/LUFA-120730/LUFA/Drivers/USB/Class/Host/AudioClassHost.h
@@ -0,0 +1,411 @@
+/*

+             LUFA Library

+     Copyright (C) Dean Camera, 2012.

+

+  dean [at] fourwalledcubicle [dot] com

+           www.lufa-lib.org

+*/

+

+/*

+  Copyright 2012  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 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.

+*/

+

+/** \file

+ *  \brief Host mode driver for the library USB Audio 1.0 Class driver.

+ *

+ *  Host mode driver for the library USB Audio 1.0 Class driver.

+ *

+ *  \note This file should not be included directly. It is automatically included as needed by the USB module driver

+ *        dispatch header located in LUFA/Drivers/USB.h.

+ */

+

+/** \ingroup Group_USBClassAudio

+ *  \defgroup Group_USBClassAudioHost Audio 1.0 Class Host Mode Driver

+ *

+ *  \section Sec_Dependencies Module Source Dependencies

+ *  The following files must be built with any user project that uses this module:

+ *    - LUFA/Drivers/USB/Class/Host/AudioClassHost.c <i>(Makefile source module name: LUFA_SRC_USBCLASS)</i>

+ *

+ *  \section Sec_ModDescription Module Description

+ *  Host Mode USB Class driver framework interface, for the Audio 1.0 USB Class driver.

+ *

+ *  @{

+ */

+

+#ifndef __AUDIO_CLASS_HOST_H__

+#define __AUDIO_CLASS_HOST_H__

+

+	/* Includes: */

+		#include "../../USB.h"

+		#include "../Common/AudioClassCommon.h"

+

+	/* Enable C linkage for C++ Compilers: */

+		#if defined(__cplusplus)

+			extern "C" {

+		#endif

+

+	/* Preprocessor Checks: */

+		#if !defined(__INCLUDE_FROM_AUDIO_DRIVER)

+			#error Do not include this file directly. Include LUFA/Drivers/USB.h instead.

+		#endif

+

+	/* Public Interface - May be used in end-application: */

+		/* Type Defines: */

+			/** \brief Audio 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 Audio class driver functions as the \c AudioInterfaceInfo parameter. This

+			 *  stores each Audio interface's configuration and state information.

+			 */

+			typedef struct

+			{

+				struct

+				{

+					USB_Pipe_Table_t DataINPipe; /**< Data IN Pipe configuration table. */

+					USB_Pipe_Table_t DataOUTPipe; /**< Data OUT Pipe configuration table. */

+				} 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 Audio_Host_ConfigurePipes() is called and the Host state machine is in the

+					                *   Configured state.

+					                */

+					uint8_t ControlInterfaceNumber; /**< Interface index of the Audio Control interface within the attached device. */

+					uint8_t StreamingInterfaceNumber; /**< Interface index of the Audio Streaming interface within the attached device. */

+

+					uint8_t EnabledStreamingAltIndex; /**< Alternative setting index of the Audio Streaming interface when the stream is enabled. */

+				} 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_Audio_Host_t;

+

+		/* Enums: */

+			/** Enum for the possible error codes returned by the \ref Audio_Host_ConfigurePipes() function. */

+			enum AUDIO_Host_EnumerationFailure_ErrorCodes_t

+			{

+				AUDIO_ENUMERROR_NoError                    = 0, /**< Configuration Descriptor was processed successfully. */

+				AUDIO_ENUMERROR_InvalidConfigDescriptor    = 1, /**< The device returned an invalid Configuration Descriptor. */

+				AUDIO_ENUMERROR_NoCompatibleInterfaceFound = 2, /**< A compatible AUDIO interface was not found in the device's Configuration Descriptor. */

+				AUDIO_ENUMERROR_PipeConfigurationFailed    = 3, /**< One or more pipes for the specified interface could not be configured correctly. */

+			};

+

+		/* Function Prototypes: */

+			/** Host interface configuration routine, to configure a given Audio host interface instance using the Configuration

+			 *  Descriptor read from an attached USB device. This function automatically updates the given Audio Host 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[in,out] AudioInterfaceInfo    Pointer to a structure containing an Audio Class host configuration and state.

+			 *  \param[in]     ConfigDescriptorSize  Length of the attached device's Configuration Descriptor.

+			 *  \param[in]     ConfigDescriptorData  Pointer to a buffer containing the attached device's Configuration Descriptor.

+			 *

+			 *  \return A value from the \ref AUDIO_Host_EnumerationFailure_ErrorCodes_t enum.

+			 */

+			uint8_t Audio_Host_ConfigurePipes(USB_ClassInfo_Audio_Host_t* const AudioInterfaceInfo,

+			                                  uint16_t ConfigDescriptorSize,

+			                                  void* ConfigDescriptorData) ATTR_NON_NULL_PTR_ARG(1) ATTR_NON_NULL_PTR_ARG(3);

+

+			/** Starts or stops the audio streaming for the given configured Audio Host interface, allowing for audio samples to be

+			 *  send and/or received.

+			 *

+			 *  \param[in,out] AudioInterfaceInfo  Pointer to a structure containing an Audio Class host configuration and state.

+			 *  \param[in]     EnableStreaming     Boolean true to enable streaming of the specified interface, false to disable

+			 *

+			 *  \return A value from the \ref USB_Host_SendControlErrorCodes_t enum.

+			 */

+			uint8_t Audio_Host_StartStopStreaming(USB_ClassInfo_Audio_Host_t* const AudioInterfaceInfo,

+			                                      const bool EnableStreaming) ATTR_NON_NULL_PTR_ARG(1);

+

+			/** Gets or sets the specified property of a streaming audio class endpoint that is bound to a pipe in the given

+			 *  class instance.

+			 *

+			 *  \param[in,out] AudioInterfaceInfo  Pointer to a structure containing an Audio Class host configuration and state.

+			 *  \param[in]     DataPipeIndex       Index of the data pipe whose bound endpoint is to be altered.

+			 *  \param[in]     EndpointProperty    Property of the endpoint to get or set, a value from \ref Audio_ClassRequests_t.

+			 *  \param[in]     EndpointControl     Parameter of the endpoint to get or set, a value from \ref Audio_EndpointControls_t.

+			 *  \param[in,out] DataLength          For SET operations, the length of the parameter data to set. For GET operations, the maximum

+			 *                                     length of the retrieved data.

+			 *  \param[in,out] Data                Pointer to a location where the parameter data is stored for SET operations, or where

+			 *                                     the retrieved data is to be stored for GET operations.

+			 *

+			 *  \return A value from the \ref USB_Host_SendControlErrorCodes_t enum.

+			 */

+			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) ATTR_NON_NULL_PTR_ARG(1) ATTR_NON_NULL_PTR_ARG(6);

+

+		/* Inline Functions: */

+			/** General management task for a given Audio 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[in,out] AudioInterfaceInfo  Pointer to a structure containing an Audio Class host configuration and state.

+			 */

+			static inline void Audio_Host_USBTask(USB_ClassInfo_Audio_Host_t* const AudioInterfaceInfo)

+			                                      ATTR_NON_NULL_PTR_ARG(1) ATTR_ALWAYS_INLINE;

+			static inline void Audio_Host_USBTask(USB_ClassInfo_Audio_Host_t* const AudioInterfaceInfo)

+			{

+				(void)AudioInterfaceInfo;

+			}

+

+			/** Determines if the given audio interface is ready for a sample to be read from it, and selects the streaming

+			 *  IN pipe ready for reading.

+			 *

+			 *  \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[in,out] AudioInterfaceInfo  Pointer to a structure containing an Audio Class configuration and state.

+			 *

+			 *  \return Boolean \c true if the given Audio interface has a sample to be read, \c false otherwise.

+			 */

+			static inline bool Audio_Host_IsSampleReceived(USB_ClassInfo_Audio_Host_t* const AudioInterfaceInfo)

+			                                               ATTR_NON_NULL_PTR_ARG(1) ATTR_ALWAYS_INLINE;

+			static inline bool Audio_Host_IsSampleReceived(USB_ClassInfo_Audio_Host_t* const AudioInterfaceInfo)

+			{

+				if ((USB_HostState != HOST_STATE_Configured) || !(AudioInterfaceInfo->State.IsActive))

+				  return false;

+

+				bool SampleReceived = false;

+

+				Pipe_SelectPipe(AudioInterfaceInfo->Config.DataINPipe.Address);

+				Pipe_Unfreeze();

+				SampleReceived = Pipe_IsINReceived();

+				Pipe_Freeze();

+

+				return SampleReceived;

+			}

+

+			/** Determines if the given audio interface is ready to accept the next sample to be written to it, and selects

+			 *  the streaming OUT pipe ready for writing.

+			 *

+			 *  \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[in,out] AudioInterfaceInfo  Pointer to a structure containing an Audio Class configuration and state.

+			 *

+			 *  \return Boolean \c true if the given Audio interface is ready to accept the next sample, \c false otherwise.

+			 */

+			static inline bool Audio_Host_IsReadyForNextSample(USB_ClassInfo_Audio_Host_t* const AudioInterfaceInfo)

+			                                                   ATTR_NON_NULL_PTR_ARG(1) ATTR_ALWAYS_INLINE;

+			static inline bool Audio_Host_IsReadyForNextSample(USB_ClassInfo_Audio_Host_t* const AudioInterfaceInfo)

+			{

+				if ((USB_HostState != HOST_STATE_Configured) || !(AudioInterfaceInfo->State.IsActive))

+				  return false;

+

+				Pipe_SelectPipe(AudioInterfaceInfo->Config.DataOUTPipe.Address);

+				return Pipe_IsOUTReady();

+			}

+

+			/** Reads the next 8-bit audio sample from the current audio interface.

+			 *

+			 *  \pre This should be preceded immediately by a call to the \ref Audio_Host_IsSampleReceived() function to ensure

+			 *       that the correct pipe is selected and ready for data.

+			 *

+			 *  \param[in,out] AudioInterfaceInfo  Pointer to a structure containing an Audio Class configuration and state.

+			 *

+			 *  \return  Signed 8-bit audio sample from the audio interface.

+			 */

+			static inline int8_t Audio_Host_ReadSample8(USB_ClassInfo_Audio_Host_t* const AudioInterfaceInfo)

+			                                            ATTR_NON_NULL_PTR_ARG(1) ATTR_ALWAYS_INLINE;

+			static inline int8_t Audio_Host_ReadSample8(USB_ClassInfo_Audio_Host_t* const AudioInterfaceInfo)

+			{

+				int8_t Sample;

+

+				(void)AudioInterfaceInfo;

+

+				Sample = Pipe_Read_8();

+

+				if (!(Pipe_BytesInPipe()))

+				{

+					Pipe_Unfreeze();

+					Pipe_ClearIN();

+					Pipe_Freeze();

+				}

+

+				return Sample;

+			}

+

+			/** Reads the next 16-bit audio sample from the current audio interface.

+			 *

+			 *  \pre This should be preceded immediately by a call to the \ref Audio_Host_IsSampleReceived() function to ensure

+			 *       that the correct pipe is selected and ready for data.

+			 *

+			 *  \param[in,out] AudioInterfaceInfo  Pointer to a structure containing an Audio Class configuration and state.

+			 *

+			 *  \return  Signed 16-bit audio sample from the audio interface.

+			 */

+			static inline int16_t Audio_Host_ReadSample16(USB_ClassInfo_Audio_Host_t* const AudioInterfaceInfo)

+			                                              ATTR_NON_NULL_PTR_ARG(1) ATTR_ALWAYS_INLINE;

+			static inline int16_t Audio_Host_ReadSample16(USB_ClassInfo_Audio_Host_t* const AudioInterfaceInfo)

+			{

+				int16_t Sample;

+

+				(void)AudioInterfaceInfo;

+

+				Sample = (int16_t)Pipe_Read_16_LE();

+

+				if (!(Pipe_BytesInPipe()))

+				{

+					Pipe_Unfreeze();

+					Pipe_ClearIN();

+					Pipe_Freeze();

+				}

+

+				return Sample;

+			}

+

+			/** Reads the next 24-bit audio sample from the current audio interface.

+			 *

+			 *  \pre This should be preceded immediately by a call to the \ref Audio_Host_IsSampleReceived() function to ensure

+			 *       that the correct pipe is selected and ready for data.

+			 *

+			 *  \param[in,out] AudioInterfaceInfo  Pointer to a structure containing an Audio Class configuration and state.

+			 *

+			 *  \return Signed 24-bit audio sample from the audio interface.

+			 */

+			static inline int32_t Audio_Host_ReadSample24(USB_ClassInfo_Audio_Host_t* const AudioInterfaceInfo)

+			                                              ATTR_NON_NULL_PTR_ARG(1) ATTR_ALWAYS_INLINE;

+			static inline int32_t Audio_Host_ReadSample24(USB_ClassInfo_Audio_Host_t* const AudioInterfaceInfo)

+			{

+				int32_t Sample;

+

+				(void)AudioInterfaceInfo;

+

+				Sample = (((uint32_t)Pipe_Read_8() << 16) | Pipe_Read_16_LE());

+

+				if (!(Pipe_BytesInPipe()))

+				{

+					Pipe_Unfreeze();

+					Pipe_ClearIN();

+					Pipe_Freeze();

+				}

+

+				return Sample;

+			}

+

+			/** Writes the next 8-bit audio sample to the current audio interface.

+			 *

+			 *  \pre This should be preceded immediately by a call to the \ref Audio_Host_IsReadyForNextSample() function to

+			 *       ensure that the correct pipe is selected and ready for data.

+			 *

+			 *  \param[in,out] AudioInterfaceInfo  Pointer to a structure containing an Audio Class configuration and state.

+			 *  \param[in]     Sample              Signed 8-bit audio sample.

+			 */

+			static inline void Audio_Host_WriteSample8(USB_ClassInfo_Audio_Host_t* const AudioInterfaceInfo,

+			                                           const int8_t Sample) ATTR_NON_NULL_PTR_ARG(1) ATTR_ALWAYS_INLINE;

+			static inline void Audio_Host_WriteSample8(USB_ClassInfo_Audio_Host_t* const AudioInterfaceInfo,

+			                                           const int8_t Sample)

+			{

+				(void)AudioInterfaceInfo;

+

+				Pipe_Write_8(Sample);

+

+				if (!(Pipe_IsReadWriteAllowed()))

+				{

+					Pipe_Unfreeze();

+					Pipe_ClearOUT();

+					Pipe_WaitUntilReady();

+					Pipe_Freeze();

+				}

+			}

+

+			/** Writes the next 16-bit audio sample to the current audio interface.

+			 *

+			 *  \pre This should be preceded immediately by a call to the \ref Audio_Host_IsReadyForNextSample() function to

+			 *       ensure that the correct pipe is selected and ready for data.

+			 *

+			 *  \param[in,out] AudioInterfaceInfo  Pointer to a structure containing an Audio Class configuration and state.

+			 *  \param[in]     Sample              Signed 16-bit audio sample.

+			 */

+			static inline void Audio_Host_WriteSample16(USB_ClassInfo_Audio_Host_t* const AudioInterfaceInfo,

+			                                            const int16_t Sample) ATTR_NON_NULL_PTR_ARG(1) ATTR_ALWAYS_INLINE;

+			static inline void Audio_Host_WriteSample16(USB_ClassInfo_Audio_Host_t* const AudioInterfaceInfo,

+			                                            const int16_t Sample)

+			{

+				(void)AudioInterfaceInfo;

+

+				Pipe_Write_16_LE(Sample);

+

+				if (!(Pipe_IsReadWriteAllowed()))

+				{

+					Pipe_Unfreeze();

+					Pipe_ClearOUT();

+					Pipe_WaitUntilReady();

+					Pipe_Freeze();

+				}

+			}

+

+			/** Writes the next 24-bit audio sample to the current audio interface.

+			 *

+			 *  \pre This should be preceded immediately by a call to the \ref Audio_Host_IsReadyForNextSample() function to

+			 *       ensure that the correct pipe is selected and ready for data.

+			 *

+			 *  \param[in,out] AudioInterfaceInfo  Pointer to a structure containing an Audio Class configuration and state.

+			 *  \param[in]     Sample              Signed 24-bit audio sample.

+			 */

+			static inline void Audio_Host_WriteSample24(USB_ClassInfo_Audio_Host_t* const AudioInterfaceInfo,

+			                                            const int32_t Sample) ATTR_NON_NULL_PTR_ARG(1) ATTR_ALWAYS_INLINE;

+			static inline void Audio_Host_WriteSample24(USB_ClassInfo_Audio_Host_t* const AudioInterfaceInfo,

+			                                            const int32_t Sample)

+			{

+				(void)AudioInterfaceInfo;

+

+				Pipe_Write_16_LE(Sample);

+				Pipe_Write_8(Sample >> 16);

+

+				if (!(Pipe_IsReadWriteAllowed()))

+				{

+					Pipe_Unfreeze();

+					Pipe_ClearOUT();

+					Pipe_WaitUntilReady();

+					Pipe_Freeze();

+				}

+			}

+

+	/* Private Interface - For use in library only: */

+	#if !defined(__DOXYGEN__)

+		/* Function Prototypes: */

+			#if defined(__INCLUDE_FROM_AUDIO_HOST_C)

+				static uint8_t DCOMP_Audio_Host_NextAudioControlInterface(void* CurrentDescriptor)

+				                                                          ATTR_WARN_UNUSED_RESULT ATTR_NON_NULL_PTR_ARG(1);

+				static uint8_t DCOMP_Audio_Host_NextAudioStreamInterface(void* CurrentDescriptor)

+				                                                         ATTR_WARN_UNUSED_RESULT ATTR_NON_NULL_PTR_ARG(1);

+				static uint8_t DCOMP_Audio_Host_NextAudioInterfaceDataEndpoint(void* CurrentDescriptor)

+				                                                               ATTR_WARN_UNUSED_RESULT ATTR_NON_NULL_PTR_ARG(1);

+			#endif

+	#endif

+

+	/* Disable C linkage for C++ Compilers: */

+		#if defined(__cplusplus)

+			}

+		#endif

+

+#endif

+

+/** @} */

+