You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
158 lines
6.5 KiB
158 lines
6.5 KiB
/*
|
|
LUFA Library
|
|
Copyright (C) Dean Camera, 2009.
|
|
|
|
dean [at] fourwalledcubicle [dot] com
|
|
www.fourwalledcubicle.com
|
|
*/
|
|
|
|
/*
|
|
Copyright 2009 Dean Camera (dean [at] fourwalledcubicle [dot] com)
|
|
|
|
Permission to use, copy, modify, and distribute this software
|
|
and its documentation for any purpose and without fee is hereby
|
|
granted, 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.
|
|
*/
|
|
|
|
/** \ingroup Group_USBClassAudio
|
|
* @defgroup Group_USBClassAudioDevice Audio Class Device Mode Driver
|
|
*
|
|
* \section Module Description
|
|
* Device Mode USB Class driver framework interface, for the Audio USB Class driver.
|
|
*
|
|
* @{
|
|
*/
|
|
|
|
#ifndef _AUDIO_CLASS_DEVICE_H_
|
|
#define _AUDIO_CLASS_DEVICE_H_
|
|
|
|
/* Includes: */
|
|
#include "../../USB.h"
|
|
#include "../Common/Audio.h"
|
|
|
|
#include <string.h>
|
|
|
|
/* Enable C linkage for C++ Compilers: */
|
|
#if defined(__cplusplus)
|
|
extern "C" {
|
|
#endif
|
|
|
|
/* Public Interface - May be used in end-application: */
|
|
/* Function Prototypes: */
|
|
/** Configures the endpoints of a given Audio interface, ready for use. This should be linked to the library
|
|
* \ref EVENT_USB_ConfigurationChanged() event so that the endpoints are configured when the configuration containing the
|
|
* given Audio interface is selected.
|
|
*
|
|
* \param AudioInterfaceInfo Pointer to a structure containing an Audio Class configuration and state.
|
|
*
|
|
* \return Boolean true if the endpoints were sucessfully configured, false otherwise
|
|
*/
|
|
bool Audio_Device_ConfigureEndpoints(USB_ClassInfo_Audio_t* AudioInterfaceInfo);
|
|
|
|
/** Processes incomming control requests from the host, that are directed to the given Audio class interface. This should be
|
|
* linked to the library \ref EVENT_USB_UnhandledControlPacket() event.
|
|
*
|
|
* \param AudioInterfaceInfo Pointer to a structure containing an Audio Class configuration and state.
|
|
*/
|
|
void Audio_Device_ProcessControlPacket(USB_ClassInfo_Audio_t* AudioInterfaceInfo);
|
|
|
|
/** General management task for a given Audio 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 AudioInterfaceInfo Pointer to a structure containing an Audio Class configuration and state.
|
|
*/
|
|
void Audio_Device_USBTask(USB_ClassInfo_Audio_t* AudioInterfaceInfo);
|
|
|
|
/** Reads the next 8-bit audio sample from the current audio interface.
|
|
*
|
|
* \note This should be preceeded immediately by a call to the USB_Audio_IsSampleReceived() function to ensure that
|
|
* the correct endpoint is selected and ready for data.
|
|
*
|
|
* \return Signed 8-bit audio sample from the audio interface
|
|
*/
|
|
int8_t Audio_Device_ReadSample8(void);
|
|
|
|
/** Reads the next 16-bit audio sample from the current audio interface.
|
|
*
|
|
* \note This should be preceeded immediately by a call to the USB_Audio_IsSampleReceived() function to ensure that
|
|
* the correct endpoint is selected and ready for data.
|
|
*
|
|
* \return Signed 16-bit audio sample from the audio interface
|
|
*/
|
|
int16_t Audio_Device_ReadSample16(void);
|
|
|
|
/** Reads the next 24-bit audio sample from the current audio interface.
|
|
*
|
|
* \note This should be preceeded immediately by a call to the USB_Audio_IsSampleReceived() function to ensure that
|
|
* the correct endpoint is selected and ready for data.
|
|
*
|
|
* \return Signed 24-bit audio sample from the audio interface
|
|
*/
|
|
int32_t Audio_Device_ReadSample24(void);
|
|
|
|
/** Writes the next 8-bit audio sample to the current audio interface.
|
|
*
|
|
* \note This should be preceeded immediately by a call to the USB_Audio_IsReadyForNextSample() function to ensure that
|
|
* the correct endpoint is selected and ready for data.
|
|
*
|
|
* \param Sample Signed 8-bit audio sample
|
|
*/
|
|
void Audio_Device_WriteSample8(int8_t Sample);
|
|
|
|
/** Writes the next 16-bit audio sample to the current audio interface.
|
|
*
|
|
* \note This should be preceeded immediately by a call to the USB_Audio_IsReadyForNextSample() function to ensure that
|
|
* the correct endpoint is selected and ready for data.
|
|
*
|
|
* \param Sample Signed 16-bit audio sample
|
|
*/
|
|
void Audio_Device_WriteSample16(int16_t Sample);
|
|
|
|
/** Writes the next 24-bit audio sample to the current audio interface.
|
|
*
|
|
* \note This should be preceeded immediately by a call to the USB_Audio_IsReadyForNextSample() function to ensure that
|
|
* the correct endpoint is selected and ready for data.
|
|
*
|
|
* \param Sample Signed 24-bit audio sample
|
|
*/
|
|
void Audio_Device_WriteSample24(int32_t Sample);
|
|
|
|
/** Determines if the given audio interface is ready for a sample to be read from it.
|
|
*
|
|
* \param AudioInterfaceInfo Pointer to a structure containing an Audio Class configuration and state.
|
|
*
|
|
* \return Boolean true if the given Audio interface has a sample to be read, false otherwise
|
|
*/
|
|
bool Audio_Device_IsSampleReceived(USB_ClassInfo_Audio_t* AudioInterfaceInfo);
|
|
|
|
/** Determines if the given audio interface is ready to accept the next sample to be written to it.
|
|
*
|
|
* \param AudioInterfaceInfo Pointer to a structure containing an Audio Class configuration and state.
|
|
*
|
|
* \return Boolean true if the given Audio interface is ready to accept the next sample, false otherwise
|
|
*/
|
|
bool Audio_Device_IsReadyForNextSample(USB_ClassInfo_Audio_t* AudioInterfaceInfo);
|
|
|
|
/* Disable C linkage for C++ Compilers: */
|
|
#if defined(__cplusplus)
|
|
}
|
|
#endif
|
|
|
|
#endif
|
|
|
|
/** @} */
|