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Diffstat (limited to 'lib/lufa/LUFA/Drivers/USB/Class/Host/AudioClassHost.h')
| -rw-r--r-- | lib/lufa/LUFA/Drivers/USB/Class/Host/AudioClassHost.h | 411 |
1 files changed, 411 insertions, 0 deletions
diff --git a/lib/lufa/LUFA/Drivers/USB/Class/Host/AudioClassHost.h b/lib/lufa/LUFA/Drivers/USB/Class/Host/AudioClassHost.h new file mode 100644 index 0000000000..f1f4207f19 --- /dev/null +++ b/lib/lufa/LUFA/Drivers/USB/Class/Host/AudioClassHost.h @@ -0,0 +1,411 @@ +/* + 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. +*/ + +/** \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_USBClassAudioHost_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_USBClassAudioHost_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, \c 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 + +/** @} */ + |