-/*\r
- LUFA Library\r
- Copyright (C) Dean Camera, 2011.\r
-\r
- dean [at] fourwalledcubicle [dot] com\r
- www.lufa-lib.org\r
-*/\r
-\r
-/*\r
- Copyright 2011 Dean Camera (dean [at] fourwalledcubicle [dot] com)\r
-\r
- Permission to use, copy, modify, distribute, and sell this\r
- software and its documentation for any purpose is hereby granted\r
- without fee, provided that the above copyright notice appear in\r
- all copies and that both that the copyright notice and this\r
- permission notice and warranty disclaimer appear in supporting\r
- documentation, and that the name of the author not be used in\r
- advertising or publicity pertaining to distribution of the\r
- software without specific, written prior permission.\r
-\r
- The author disclaim all warranties with regard to this\r
- software, including all implied warranties of merchantability\r
- and fitness. In no event shall the author be liable for any\r
- special, indirect or consequential damages or any damages\r
- whatsoever resulting from loss of use, data or profits, whether\r
- in an action of contract, negligence or other tortious action,\r
- arising out of or in connection with the use or performance of\r
- this software.\r
-*/\r
-\r
-/** \file\r
- * \brief Host mode driver for the library USB Audio 1.0 Class driver.\r
- *\r
- * Host mode driver for the library USB Audio 1.0 Class driver.\r
- *\r
- * \note This file should not be included directly. It is automatically included as needed by the USB module driver\r
- * dispatch header located in LUFA/Drivers/USB.h.\r
- */\r
-\r
-/** \ingroup Group_USBClassAudio\r
- * \defgroup Group_USBClassAudioHost Audio 1.0 Class Host Mode Driver\r
- *\r
- * \section Sec_Dependencies Module Source Dependencies\r
- * The following files must be built with any user project that uses this module:\r
- * - LUFA/Drivers/USB/Class/Host/Audio.c <i>(Makefile source module name: LUFA_SRC_USBCLASS)</i>\r
- *\r
- * \section Sec_ModDescription Module Description\r
- * Host Mode USB Class driver framework interface, for the Audio 1.0 USB Class driver.\r
- *\r
- * @{\r
- */\r
-\r
-#ifndef __AUDIO_CLASS_HOST_H__\r
-#define __AUDIO_CLASS_HOST_H__\r
-\r
- /* Includes: */\r
- #include "../../USB.h"\r
- #include "../Common/Audio.h"\r
-\r
- /* Enable C linkage for C++ Compilers: */\r
- #if defined(__cplusplus)\r
- extern "C" {\r
- #endif\r
-\r
- /* Preprocessor Checks: */\r
- #if !defined(__INCLUDE_FROM_AUDIO_DRIVER)\r
- #error Do not include this file directly. Include LUFA/Drivers/USB.h instead.\r
- #endif\r
-\r
- /* Public Interface - May be used in end-application: */\r
- /* Type Defines: */\r
- /** \brief Audio Class Host Mode Configuration and State Structure.\r
- *\r
- * Class state structure. An instance of this structure should be made within the user application,\r
- * and passed to each of the Audio class driver functions as the \c AudioInterfaceInfo parameter. This\r
- * stores each Audio interface's configuration and state information.\r
- */\r
- typedef struct\r
- {\r
- const struct\r
- {\r
- uint8_t DataINPipeNumber; /**< Pipe number of the Audio interface's IN data pipe. */\r
- uint8_t DataOUTPipeNumber; /**< Pipe number of the Audio interface's OUT data pipe. */\r
- } Config; /**< Config data for the USB class interface within the device. All elements in this section\r
- * <b>must</b> be set or the interface will fail to enumerate and operate correctly.\r
- */\r
- struct\r
- {\r
- bool IsActive; /**< Indicates if the current interface instance is connected to an attached device, valid\r
- * after \ref Audio_Host_ConfigurePipes() is called and the Host state machine is in the\r
- * Configured state.\r
- */\r
- uint8_t ControlInterfaceNumber; /**< Interface index of the Audio Control interface within the attached device. */\r
- uint8_t StreamingInterfaceNumber; /**< Interface index of the Audio Streaming interface within the attached device. */\r
- \r
- uint8_t EnabledStreamingAltIndex; /**< Alternative setting index of the Audio Streaming interface when the stream is enabled. */\r
-\r
- uint16_t DataINPipeSize; /**< Size in bytes of the Audio interface's IN data pipe. */\r
- uint16_t DataOUTPipeSize; /**< Size in bytes of the Audio interface's OUT data pipe. */\r
- } State; /**< State data for the USB class interface within the device. All elements in this section\r
- * <b>may</b> be set to initial values, but may also be ignored to default to sane values when\r
- * the interface is enumerated.\r
- */\r
- } USB_ClassInfo_Audio_Host_t;\r
-\r
- /* Enums: */\r
- /** Enum for the possible error codes returned by the \ref Audio_Host_ConfigurePipes() function. */\r
- enum AUDIO_Host_EnumerationFailure_ErrorCodes_t\r
- {\r
- AUDIO_ENUMERROR_NoError = 0, /**< Configuration Descriptor was processed successfully. */\r
- AUDIO_ENUMERROR_InvalidConfigDescriptor = 1, /**< The device returned an invalid Configuration Descriptor. */\r
- AUDIO_ENUMERROR_NoCompatibleInterfaceFound = 2, /**< A compatible AUDIO interface was not found in the device's Configuration Descriptor. */\r
- AUDIO_ENUMERROR_PipeConfigurationFailed = 3, /**< One or more pipes for the specified interface could not be configured correctly. */\r
- };\r
-\r
- /* Function Prototypes: */\r
- /** Host interface configuration routine, to configure a given Audio host interface instance using the Configuration\r
- * Descriptor read from an attached USB device. This function automatically updates the given Audio Host instance's\r
- * state values and configures the pipes required to communicate with the interface if it is found within the\r
- * device. This should be called once after the stack has enumerated the attached device, while the host state\r
- * machine is in the Addressed state.\r
- *\r
- * \param[in,out] AudioInterfaceInfo Pointer to a structure containing an Audio Class host configuration and state.\r
- * \param[in] ConfigDescriptorSize Length of the attached device's Configuration Descriptor.\r
- * \param[in] DeviceConfigDescriptor Pointer to a buffer containing the attached device's Configuration Descriptor.\r
- *\r
- * \return A value from the \ref AUDIO_Host_EnumerationFailure_ErrorCodes_t enum.\r
- */\r
- uint8_t Audio_Host_ConfigurePipes(USB_ClassInfo_Audio_Host_t* const AudioInterfaceInfo,\r
- uint16_t ConfigDescriptorSize,\r
- void* DeviceConfigDescriptor) ATTR_NON_NULL_PTR_ARG(1) ATTR_NON_NULL_PTR_ARG(3);\r
-\r
- /** Starts or stops the audio streaming for the given configured Audio Host interface, allowing for audio samples to be\r
- * send and/or received.\r
- *\r
- * \param[in,out] AudioInterfaceInfo Pointer to a structure containing an Audio Class host configuration and state.\r
- * \param[in] EnableStreaming Boolean true to enable streaming of the specified interface, false to disable\r
- *\r
- * \return A value from the \ref USB_Host_SendControlErrorCodes_t enum.\r
- */\r
- uint8_t Audio_Host_StartStopStreaming(USB_ClassInfo_Audio_Host_t* const AudioInterfaceInfo,\r
- bool EnableStreaming);\r
-\r
- /** Gets or sets the specified property of a streaming audio class endpoint that is bound to a pipe in the given\r
- * class instance.\r
- *\r
- * \param[in,out] AudioInterfaceInfo Pointer to a structure containing an Audio Class host configuration and state.\r
- * \param[in] DataPipeIndex Index of the data pipe whose bound endpoint is to be altered.\r
- * \param[in] EndpointProperty Property of the endpoint to get or set, a value from \ref Audio_ClassRequests_t.\r
- * \param[in] EndpointControl Parameter of the endpoint to get or set, a value from \ref Audio_EndpointControls_t.\r
- * \param[in,out] DataLength For SET operations, the length of the parameter data to set. For GET operations, the maximum\r
- * length of the retrieved data.\r
- * \param[in,out] Data Pointer to a location where the parameter data is stored for SET operations, or where\r
- * the retrieved data is to be stored for GET operations.\r
- *\r
- * \return A value from the \ref USB_Host_SendControlErrorCodes_t enum.\r
- */ \r
- uint8_t Audio_GetSetEndpointProperty(USB_ClassInfo_Audio_Host_t* const AudioInterfaceInfo,\r
- const uint8_t DataPipeIndex,\r
- const uint8_t EndpointProperty,\r
- const uint8_t EndpointControl,\r
- uint16_t const DataLength,\r
- void* const Data);\r
-\r
- /* Inline Functions: */\r
- /** General management task for a given Audio host class interface, required for the correct operation of\r
- * the interface. This should be called frequently in the main program loop, before the master USB management task\r
- * \ref USB_USBTask().\r
- *\r
- * \param[in,out] AudioInterfaceInfo Pointer to a structure containing an Audio Class host configuration and state.\r
- */\r
- static inline void Audio_Host_USBTask(USB_ClassInfo_Audio_Host_t* const AudioInterfaceInfo);\r
- static inline void Audio_Host_USBTask(USB_ClassInfo_Audio_Host_t* const AudioInterfaceInfo)\r
- {\r
- (void)AudioInterfaceInfo;\r
- }\r
-\r
- /** Determines if the given audio interface is ready for a sample to be read from it, and selects the streaming\r
- * IN pipe ready for reading.\r
- *\r
- * \pre This function must only be called when the Host state machine is in the \ref HOST_STATE_Configured state or\r
- * the call will fail.\r
- *\r
- * \param[in,out] AudioInterfaceInfo Pointer to a structure containing an Audio Class configuration and state.\r
- *\r
- * \return Boolean \c true if the given Audio interface has a sample to be read, \c false otherwise.\r
- */\r
- static inline bool Audio_Host_IsSampleReceived(USB_ClassInfo_Audio_Host_t* const AudioInterfaceInfo)\r
- ATTR_NON_NULL_PTR_ARG(1) ATTR_ALWAYS_INLINE;\r
- static inline bool Audio_Host_IsSampleReceived(USB_ClassInfo_Audio_Host_t* const AudioInterfaceInfo)\r
- {\r
- if ((USB_HostState != HOST_STATE_Configured) || !(AudioInterfaceInfo->State.IsActive))\r
- return false;\r
-\r
- bool SampleReceived = false;\r
-\r
- Pipe_SelectPipe(AudioInterfaceInfo->Config.DataOUTPipeNumber);\r
- Pipe_Unfreeze();\r
- SampleReceived = Pipe_IsINReceived();\r
- Pipe_Freeze();\r
- return SampleReceived;\r
- }\r
-\r
- /** Determines if the given audio interface is ready to accept the next sample to be written to it, and selects\r
- * the streaming OUT pipe ready for writing.\r
- *\r
- * \pre This function must only be called when the Host state machine is in the \ref HOST_STATE_Configured state or\r
- * the call will fail.\r
- *\r
- * \param[in,out] AudioInterfaceInfo Pointer to a structure containing an Audio Class configuration and state.\r
- *\r
- * \return Boolean \c true if the given Audio interface is ready to accept the next sample, \c false otherwise.\r
- */\r
- static inline bool Audio_Host_IsReadyForNextSample(USB_ClassInfo_Audio_Host_t* const AudioInterfaceInfo)\r
- ATTR_NON_NULL_PTR_ARG(1) ATTR_ALWAYS_INLINE;\r
- static inline bool Audio_Host_IsReadyForNextSample(USB_ClassInfo_Audio_Host_t* const AudioInterfaceInfo)\r
- {\r
- if ((USB_HostState != HOST_STATE_Configured) || !(AudioInterfaceInfo->State.IsActive))\r
- return false;\r
-\r
- Pipe_SelectPipe(AudioInterfaceInfo->Config.DataINPipeNumber);\r
- return Pipe_IsOUTReady();\r
- }\r
-\r
- /** Reads the next 8-bit audio sample from the current audio interface.\r
- *\r
- * \pre This should be preceded immediately by a call to the \ref Audio_Host_IsSampleReceived() function to ensure\r
- * that the correct pipe is selected and ready for data.\r
- *\r
- * \param[in,out] AudioInterfaceInfo Pointer to a structure containing an Audio Class configuration and state.\r
- *\r
- * \return Signed 8-bit audio sample from the audio interface.\r
- */\r
- static inline int8_t Audio_Host_ReadSample8(USB_ClassInfo_Audio_Host_t* const AudioInterfaceInfo)\r
- ATTR_NON_NULL_PTR_ARG(1) ATTR_ALWAYS_INLINE;\r
- static inline int8_t Audio_Host_ReadSample8(USB_ClassInfo_Audio_Host_t* const AudioInterfaceInfo)\r
- {\r
- int8_t Sample;\r
-\r
- (void)AudioInterfaceInfo;\r
-\r
- Sample = Pipe_Read_8();\r
-\r
- if (!(Pipe_BytesInPipe()))\r
- {\r
- Pipe_Unfreeze();\r
- Pipe_ClearIN();\r
- Pipe_Freeze();\r
- }\r
-\r
- return Sample;\r
- }\r
-\r
- /** Reads the next 16-bit audio sample from the current audio interface.\r
- *\r
- * \pre This should be preceded immediately by a call to the \ref Audio_Host_IsSampleReceived() function to ensure\r
- * that the correct pipe is selected and ready for data.\r
- *\r
- * \param[in,out] AudioInterfaceInfo Pointer to a structure containing an Audio Class configuration and state.\r
- *\r
- * \return Signed 16-bit audio sample from the audio interface.\r
- */\r
- static inline int16_t Audio_Host_ReadSample16(USB_ClassInfo_Audio_Host_t* const AudioInterfaceInfo)\r
- ATTR_NON_NULL_PTR_ARG(1) ATTR_ALWAYS_INLINE;\r
- static inline int16_t Audio_Host_ReadSample16(USB_ClassInfo_Audio_Host_t* const AudioInterfaceInfo)\r
- {\r
- int16_t Sample;\r
-\r
- (void)AudioInterfaceInfo;\r
-\r
- Sample = (int16_t)Pipe_Read_16_LE();\r
-\r
- if (!(Pipe_BytesInPipe()))\r
- {\r
- Pipe_Unfreeze();\r
- Pipe_ClearIN();\r
- Pipe_Freeze();\r
- }\r
-\r
- return Sample;\r
- }\r
-\r
- /** Reads the next 24-bit audio sample from the current audio interface.\r
- *\r
- * \pre This should be preceded immediately by a call to the \ref Audio_Host_IsSampleReceived() function to ensure\r
- * that the correct pipe is selected and ready for data.\r
- *\r
- * \param[in,out] AudioInterfaceInfo Pointer to a structure containing an Audio Class configuration and state.\r
- *\r
- * \return Signed 24-bit audio sample from the audio interface.\r
- */\r
- static inline int32_t Audio_Host_ReadSample24(USB_ClassInfo_Audio_Host_t* const AudioInterfaceInfo)\r
- ATTR_NON_NULL_PTR_ARG(1) ATTR_ALWAYS_INLINE;\r
- static inline int32_t Audio_Host_ReadSample24(USB_ClassInfo_Audio_Host_t* const AudioInterfaceInfo)\r
- {\r
- int32_t Sample;\r
-\r
- (void)AudioInterfaceInfo;\r
-\r
- Sample = (((uint32_t)Pipe_Read_8() << 16) | Pipe_Read_16_LE());\r
-\r
- if (!(Pipe_BytesInPipe()))\r
- {\r
- Pipe_Unfreeze();\r
- Pipe_ClearIN();\r
- Pipe_Freeze();\r
- }\r
-\r
- return Sample;\r
- }\r
-\r
- /** Writes the next 8-bit audio sample to the current audio interface.\r
- *\r
- * \pre This should be preceded immediately by a call to the \ref Audio_Host_IsReadyForNextSample() function to\r
- * ensure that the correct pipe is selected and ready for data.\r
- *\r
- * \param[in,out] AudioInterfaceInfo Pointer to a structure containing an Audio Class configuration and state.\r
- * \param[in] Sample Signed 8-bit audio sample.\r
- */\r
- static inline void Audio_Host_WriteSample8(USB_ClassInfo_Audio_Host_t* const AudioInterfaceInfo,\r
- const int8_t Sample) ATTR_NON_NULL_PTR_ARG(1) ATTR_ALWAYS_INLINE;\r
- static inline void Audio_Host_WriteSample8(USB_ClassInfo_Audio_Host_t* const AudioInterfaceInfo,\r
- const int8_t Sample)\r
- {\r
- Pipe_Write_8(Sample);\r
-\r
- if (Pipe_BytesInPipe() == AudioInterfaceInfo->State.DataINPipeSize)\r
- {\r
- Pipe_Unfreeze();\r
- Pipe_ClearOUT();\r
- Pipe_Freeze();\r
- }\r
- }\r
-\r
- /** Writes the next 16-bit audio sample to the current audio interface.\r
- *\r
- * \pre This should be preceded immediately by a call to the \ref Audio_Host_IsReadyForNextSample() function to\r
- * ensure that the correct pipe is selected and ready for data.\r
- *\r
- * \param[in,out] AudioInterfaceInfo Pointer to a structure containing an Audio Class configuration and state.\r
- * \param[in] Sample Signed 16-bit audio sample.\r
- */\r
- static inline void Audio_Host_WriteSample16(USB_ClassInfo_Audio_Host_t* const AudioInterfaceInfo,\r
- const int16_t Sample) ATTR_NON_NULL_PTR_ARG(1) ATTR_ALWAYS_INLINE;\r
- static inline void Audio_Host_WriteSample16(USB_ClassInfo_Audio_Host_t* const AudioInterfaceInfo,\r
- const int16_t Sample)\r
- {\r
- Pipe_Write_16_LE(Sample);\r
-\r
- if (Pipe_BytesInPipe() == AudioInterfaceInfo->State.DataINPipeSize)\r
- {\r
- Pipe_Unfreeze();\r
- Pipe_ClearOUT();\r
- Pipe_Freeze();\r
- }\r
- }\r
-\r
- /** Writes the next 24-bit audio sample to the current audio interface.\r
- *\r
- * \pre This should be preceded immediately by a call to the \ref Audio_Host_IsReadyForNextSample() function to\r
- * ensure that the correct pipe is selected and ready for data.\r
- *\r
- * \param[in,out] AudioInterfaceInfo Pointer to a structure containing an Audio Class configuration and state.\r
- * \param[in] Sample Signed 24-bit audio sample.\r
- */\r
- static inline void Audio_Host_WriteSample24(USB_ClassInfo_Audio_Host_t* const AudioInterfaceInfo,\r
- const int32_t Sample) ATTR_NON_NULL_PTR_ARG(1) ATTR_ALWAYS_INLINE;\r
- static inline void Audio_Host_WriteSample24(USB_ClassInfo_Audio_Host_t* const AudioInterfaceInfo,\r
- const int32_t Sample)\r
- {\r
- Pipe_Write_16_LE(Sample);\r
- Pipe_Write_8(Sample >> 16);\r
-\r
- if (Pipe_BytesInPipe() == AudioInterfaceInfo->State.DataINPipeSize)\r
- {\r
- Pipe_Unfreeze();\r
- Pipe_ClearOUT();\r
- Pipe_Freeze();\r
- }\r
- }\r
- \r
- /* Private Interface - For use in library only: */\r
- #if !defined(__DOXYGEN__)\r
- /* Function Prototypes: */\r
- #if defined(__INCLUDE_FROM_AUDIO_HOST_C)\r
- static uint8_t DComp_NextAudioControlInterface(void* CurrentDescriptor);\r
- static uint8_t DComp_NextAudioStreamInterface(void* CurrentDescriptor);\r
- static uint8_t DComp_NextAudioInterfaceDataEndpoint(void* CurrentDescriptor);\r
- #endif\r
- #endif\r
-\r
- /* Disable C linkage for C++ Compilers: */\r
- #if defined(__cplusplus)\r
- }\r
- #endif\r
-\r
-#endif\r
-\r
-/** @} */\r
-\r
+/*
+ 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 <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/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
+ * <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. */
+
+ 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
+ * <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] 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) ATTR_NON_NULL_PTR_ARG(1);
+ 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) ATTR_NON_NULL_PTR_ARG(1) ATTR_NON_NULL_PTR_ARG(6);
+ 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)
+ 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.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)
+ 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
+
+/** @} */
+
projects / pub / USBasp.git / blobdiff