From 0ec2b55a7c9bc616ad8c78e75410dd27bae1b8b6 Mon Sep 17 00:00:00 2001 From: Dean Camera Date: Thu, 16 Jun 2011 12:18:46 +0000 Subject: Add missing SVN eol-style properties to source files to prevent mixed end-of-line characters. --- LUFA/Drivers/USB/Class/Host/Audio.c | 494 +++++++++++----------- LUFA/Drivers/USB/Class/Host/Audio.h | 820 ++++++++++++++++++------------------ 2 files changed, 657 insertions(+), 657 deletions(-) (limited to 'LUFA/Drivers/USB/Class') diff --git a/LUFA/Drivers/USB/Class/Host/Audio.c b/LUFA/Drivers/USB/Class/Host/Audio.c index 088872de4..72b17f33a 100644 --- a/LUFA/Drivers/USB/Class/Host/Audio.c +++ b/LUFA/Drivers/USB/Class/Host/Audio.c @@ -1,247 +1,247 @@ -/* - LUFA Library - Copyright (C) Dean Camera, 2011. - - dean [at] fourwalledcubicle [dot] com - www.lufa-lib.org -*/ - -/* - Copyright 2011 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. -*/ - -#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 "Audio.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.DataINPipeNumber && !(DataINEndpoint)) || - (AudioInterfaceInfo->Config.DataOUTPipeNumber && !(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_DESCRIPTOR_DIR_IN) - DataINEndpoint = EndpointData; - else - DataOUTEndpoint = EndpointData; - } - - for (uint8_t PipeNum = 1; PipeNum < PIPE_TOTAL_PIPES; PipeNum++) - { - uint16_t Size; - uint8_t Type; - uint8_t Token; - uint8_t EndpointAddress; - bool DoubleBanked; - - if (PipeNum == AudioInterfaceInfo->Config.DataINPipeNumber) - { - Size = DataINEndpoint->EndpointSize; - EndpointAddress = DataINEndpoint->EndpointAddress; - Token = PIPE_TOKEN_IN; - Type = EP_TYPE_ISOCHRONOUS; - DoubleBanked = true; - - AudioInterfaceInfo->State.DataINPipeSize = DataINEndpoint->EndpointSize; - } - else if (PipeNum == AudioInterfaceInfo->Config.DataOUTPipeNumber) - { - Size = DataOUTEndpoint->EndpointSize; - EndpointAddress = DataOUTEndpoint->EndpointAddress; - Token = PIPE_TOKEN_OUT; - Type = EP_TYPE_ISOCHRONOUS; - DoubleBanked = true; - - AudioInterfaceInfo->State.DataOUTPipeSize = DataOUTEndpoint->EndpointSize; - } - else - { - continue; - } - - if (!(Pipe_ConfigurePipe(PipeNum, Type, Token, EndpointAddress, Size, - DoubleBanked ? PIPE_BANK_DOUBLE : PIPE_BANK_SINGLE))) - { - 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 - +/* + LUFA Library + Copyright (C) Dean Camera, 2011. + + dean [at] fourwalledcubicle [dot] com + www.lufa-lib.org +*/ + +/* + Copyright 2011 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. +*/ + +#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 "Audio.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.DataINPipeNumber && !(DataINEndpoint)) || + (AudioInterfaceInfo->Config.DataOUTPipeNumber && !(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_DESCRIPTOR_DIR_IN) + DataINEndpoint = EndpointData; + else + DataOUTEndpoint = EndpointData; + } + + for (uint8_t PipeNum = 1; PipeNum < PIPE_TOTAL_PIPES; PipeNum++) + { + uint16_t Size; + uint8_t Type; + uint8_t Token; + uint8_t EndpointAddress; + bool DoubleBanked; + + if (PipeNum == AudioInterfaceInfo->Config.DataINPipeNumber) + { + Size = DataINEndpoint->EndpointSize; + EndpointAddress = DataINEndpoint->EndpointAddress; + Token = PIPE_TOKEN_IN; + Type = EP_TYPE_ISOCHRONOUS; + DoubleBanked = true; + + AudioInterfaceInfo->State.DataINPipeSize = DataINEndpoint->EndpointSize; + } + else if (PipeNum == AudioInterfaceInfo->Config.DataOUTPipeNumber) + { + Size = DataOUTEndpoint->EndpointSize; + EndpointAddress = DataOUTEndpoint->EndpointAddress; + Token = PIPE_TOKEN_OUT; + Type = EP_TYPE_ISOCHRONOUS; + DoubleBanked = true; + + AudioInterfaceInfo->State.DataOUTPipeSize = DataOUTEndpoint->EndpointSize; + } + else + { + continue; + } + + if (!(Pipe_ConfigurePipe(PipeNum, Type, Token, EndpointAddress, Size, + DoubleBanked ? PIPE_BANK_DOUBLE : PIPE_BANK_SINGLE))) + { + 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 + diff --git a/LUFA/Drivers/USB/Class/Host/Audio.h b/LUFA/Drivers/USB/Class/Host/Audio.h index c4a832bf1..dafe9e6fb 100644 --- a/LUFA/Drivers/USB/Class/Host/Audio.h +++ b/LUFA/Drivers/USB/Class/Host/Audio.h @@ -1,410 +1,410 @@ -/* - LUFA Library - Copyright (C) Dean Camera, 2011. - - dean [at] fourwalledcubicle [dot] com - www.lufa-lib.org -*/ - -/* - Copyright 2011 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/Audio.c (Makefile source module name: LUFA_SRC_USBCLASS) - * - * \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/Audio.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 - { - const struct - { - uint8_t DataINPipeNumber; /**< Pipe number of the Audio interface's IN data pipe. If this interface should not - * bind to an IN endpoint, this may be set to 0 to disable audio input streaming for - * this driver instance. - */ - uint8_t DataOUTPipeNumber; /**< Pipe number of the Audio interface's OUT data pipe. If this interface should not - * bind to an OUT endpoint, this may be set to 0 to disable audio output streaming for - * this driver instance. - */ - } Config; /**< Config data for the USB class interface within the device. All elements in this section - * must 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. */ - - uint16_t DataINPipeSize; /**< Size in bytes of the Audio interface's IN data pipe. */ - uint16_t DataOUTPipeSize; /**< Size in bytes of the Audio interface's OUT data pipe. */ - } State; /**< State data for the USB class interface within the device. All elements in this section - * may 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] DeviceConfigDescriptor 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* DeviceConfigDescriptor) 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); - - /** 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); - - /* 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); - 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.DataINPipeNumber); - 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.DataOUTPipeNumber); - 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) - { - 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) - { - 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) - { - 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); - static uint8_t DCOMP_Audio_Host_NextAudioStreamInterface(void* CurrentDescriptor); - static uint8_t DCOMP_Audio_Host_NextAudioInterfaceDataEndpoint(void* CurrentDescriptor); - #endif - #endif - - /* Disable C linkage for C++ Compilers: */ - #if defined(__cplusplus) - } - #endif - -#endif - -/** @} */ - +/* + LUFA Library + Copyright (C) Dean Camera, 2011. + + dean [at] fourwalledcubicle [dot] com + www.lufa-lib.org +*/ + +/* + Copyright 2011 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/Audio.c (Makefile source module name: LUFA_SRC_USBCLASS) + * + * \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/Audio.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 + { + const struct + { + uint8_t DataINPipeNumber; /**< Pipe number of the Audio interface's IN data pipe. If this interface should not + * bind to an IN endpoint, this may be set to 0 to disable audio input streaming for + * this driver instance. + */ + uint8_t DataOUTPipeNumber; /**< Pipe number of the Audio interface's OUT data pipe. If this interface should not + * bind to an OUT endpoint, this may be set to 0 to disable audio output streaming for + * this driver instance. + */ + } Config; /**< Config data for the USB class interface within the device. All elements in this section + * must 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. */ + + uint16_t DataINPipeSize; /**< Size in bytes of the Audio interface's IN data pipe. */ + uint16_t DataOUTPipeSize; /**< Size in bytes of the Audio interface's OUT data pipe. */ + } State; /**< State data for the USB class interface within the device. All elements in this section + * may 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] DeviceConfigDescriptor 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* DeviceConfigDescriptor) 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); + + /** 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); + + /* 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); + 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.DataINPipeNumber); + 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.DataOUTPipeNumber); + 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) + { + 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) + { + 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) + { + 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); + static uint8_t DCOMP_Audio_Host_NextAudioStreamInterface(void* CurrentDescriptor); + static uint8_t DCOMP_Audio_Host_NextAudioInterfaceDataEndpoint(void* CurrentDescriptor); + #endif + #endif + + /* Disable C linkage for C++ Compilers: */ + #if defined(__cplusplus) + } + #endif + +#endif + +/** @} */ + -- cgit v1.2.3