/*
LUFA Library
Copyright (C) Dean Camera, 2010.
-
+
dean [at] fourwalledcubicle [dot] com
www.fourwalledcubicle.com
*/
/*
Copyright 2010 Dean Camera (dean [at] fourwalledcubicle [dot] com)
- Permission to use, copy, modify, distribute, and sell this
+ 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
+ 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
+ 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
*/
/** \file
- * \brief Device mode driver for the library USB Audio Class driver.
+ * \brief Device mode driver for the library USB Audio 1.0 Class driver.
*
- * Device mode driver for the library USB Audio Class driver.
+ * Device 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 class driver
* dispatch header located in LUFA/Drivers/USB/Class/Audio.h.
*
* \section Sec_Dependencies Module Source Dependencies
* The following files must be built with any user project that uses this module:
- * - LUFA/Drivers/USB/Class/Device/Audio.c
+ * - LUFA/Drivers/USB/Class/Device/Audio.c <i>(Makefile source module name: LUFA_SRC_USBCLASS)</i>
*
* \section Module Description
- * Device Mode USB Class driver framework interface, for the Audio USB Class driver.
+ * Device Mode USB Class driver framework interface, for the Audio 1.0 USB Class driver.
*
* @{
*/
/* Includes: */
#include "../../USB.h"
#include "../Common/Audio.h"
-
+
#include <string.h>
/* Enable C linkage for C++ Compilers: */
const struct
{
uint8_t StreamingInterfaceNumber; /**< Index of the Audio Streaming interface within the device this
- * structure controls
+ * structure controls.
*/
uint8_t DataINEndpointNumber; /**< Endpoint number of the incoming Audio Streaming data, if available
- * (zero if unused)
+ * (zero if unused).
*/
uint16_t DataINEndpointSize; /**< Size in bytes of the incoming Audio Streaming data endpoint, if available
- * (zero if unused)
+ * (zero if unused).
*/
uint8_t DataOUTEndpointNumber; /**< Endpoint number of the outgoing Audio Streaming data, if available
- * (zero if unused)
+ * (zero if unused).
*/
uint16_t DataOUTEndpointSize; /**< Size in bytes of the outgoing Audio Streaming data endpoint, if available
- * (zero if unused)
- */
+ * (zero if unused).
+ */
} 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.
*/
*/
} State; /**< State data for the USB class interface within the device. All elements in this section
* are reset to their defaults when the interface is enumerated.
- */
+ */
} USB_ClassInfo_Audio_Device_t;
-
+
/* Function Prototypes: */
/** Configures the endpoints of a given Audio interface, ready for use. This should be linked to the library
* \ref EVENT_USB_Device_ConfigurationChanged() event so that the endpoints are configured when the configuration containing the
* given Audio interface is selected.
*
- * \param[in,out] AudioInterfaceInfo Pointer to a structure containing an Audio Class configuration and state
+ * \note The endpoint index numbers as given in the interface's configuration structure must not overlap with any other
+ * interface, or endpoint bank corruption will occur. Gaps in the allocated endpoint numbers or non-sequential indexes
+ * within a single interface is allowed, but no two interfaces of any type have have interleaved endpoint indexes.
*
- * \return Boolean true if the endpoints were successfully configured, false otherwise
+ * \param[in,out] AudioInterfaceInfo Pointer to a structure containing an Audio Class configuration and state.
+ *
+ * \return Boolean true if the endpoints were successfully configured, false otherwise.
*/
bool Audio_Device_ConfigureEndpoints(USB_ClassInfo_Audio_Device_t* const AudioInterfaceInfo) ATTR_NON_NULL_PTR_ARG(1);
/** Processes incoming control requests from the host, that are directed to the given Audio class interface. This should be
* linked to the library \ref EVENT_USB_Device_UnhandledControlRequest() event.
*
- * \param[in,out] AudioInterfaceInfo Pointer to a structure containing an Audio Class configuration and state
+ * \param[in,out] AudioInterfaceInfo Pointer to a structure containing an Audio Class configuration and state.
*/
void Audio_Device_ProcessControlRequest(USB_ClassInfo_Audio_Device_t* const AudioInterfaceInfo) ATTR_NON_NULL_PTR_ARG(1);
-
- /* Inline Functions: */
+
+ /* Inline Functions: */
/** 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[in,out] AudioInterfaceInfo Pointer to a structure containing an Audio Class configuration and state
+ * \param[in,out] AudioInterfaceInfo Pointer to a structure containing an Audio Class configuration and state.
*/
- static inline void Audio_Device_USBTask(USB_ClassInfo_Audio_Device_t* const AudioInterfaceInfo);
+ static inline void Audio_Device_USBTask(USB_ClassInfo_Audio_Device_t* const AudioInterfaceInfo)
+ ATTR_NON_NULL_PTR_ARG(1) ATTR_ALWAYS_INLINE;
static inline void Audio_Device_USBTask(USB_ClassInfo_Audio_Device_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
* OUT endpoint ready for reading.
*
- * \note This function must only be called when the Device state machine is in the DEVICE_STATE_Configured state or
- * the call will fail.
+ * \pre This function must only be called when the Device state machine is in the \ref DEVICE_STATE_Configured state or
+ * the call will fail.
*
- * \param[in,out] AudioInterfaceInfo Pointer to a structure containing an Audio Class configuration and state
+ * \param[in,out] 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
- */
+ * \return Boolean true if the given Audio interface has a sample to be read, false otherwise.
+ */
+ static inline bool Audio_Device_IsSampleReceived(USB_ClassInfo_Audio_Device_t* const AudioInterfaceInfo)
+ ATTR_NON_NULL_PTR_ARG(1) ATTR_ALWAYS_INLINE;
static inline bool Audio_Device_IsSampleReceived(USB_ClassInfo_Audio_Device_t* const AudioInterfaceInfo)
{
if ((USB_DeviceState != DEVICE_STATE_Configured) || !(AudioInterfaceInfo->State.InterfaceEnabled))
return false;
-
- Endpoint_SelectEndpoint(AudioInterfaceInfo->Config.DataOUTEndpointNumber);
+
+ Endpoint_SelectEndpoint(AudioInterfaceInfo->Config.DataOUTEndpointNumber);
return Endpoint_IsOUTReceived();
}
/** Determines if the given audio interface is ready to accept the next sample to be written to it, and selects
* the streaming IN endpoint ready for writing.
*
- * \note This function must only be called when the Device state machine is in the DEVICE_STATE_Configured state or
- * the call will fail.
+ * \pre This function must only be called when the Device state machine is in the \ref DEVICE_STATE_Configured state or
+ * the call will fail.
*
- * \param[in,out] AudioInterfaceInfo Pointer to a structure containing an Audio Class configuration and state
+ * \param[in,out] 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
+ * \return Boolean true if the given Audio interface is ready to accept the next sample, false otherwise.
*/
static inline bool Audio_Device_IsReadyForNextSample(USB_ClassInfo_Audio_Device_t* const AudioInterfaceInfo)
+ ATTR_NON_NULL_PTR_ARG(1) ATTR_ALWAYS_INLINE;
+ static inline bool Audio_Device_IsReadyForNextSample(USB_ClassInfo_Audio_Device_t* const AudioInterfaceInfo)
{
if ((USB_DeviceState != DEVICE_STATE_Configured) || !(AudioInterfaceInfo->State.InterfaceEnabled))
return false;
-
+
Endpoint_SelectEndpoint(AudioInterfaceInfo->Config.DataINEndpointNumber);
return Endpoint_IsINReady();
}
/** Reads the next 8-bit audio sample from the current audio interface.
*
- * \note This should be preceded immediately by a call to the USB_Audio_IsSampleReceived() function to ensure that
- * the correct endpoint is selected and ready for data.
+ * \pre This should be preceded immediately by a call to the \ref Audio_Device_IsSampleReceived() function to ensure
+ * ensure the correct endpoint is selected and ready for data.
*
- * \param[in,out] AudioInterfaceInfo Pointer to a structure containing an Audio Class configuration and state
+ * \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
+ * \return Signed 8-bit audio sample from the audio interface.
*/
- static inline int8_t Audio_Device_ReadSample8(USB_ClassInfo_Audio_Device_t* const AudioInterfaceInfo) ATTR_ALWAYS_INLINE;
+ static inline int8_t Audio_Device_ReadSample8(USB_ClassInfo_Audio_Device_t* const AudioInterfaceInfo)
+ ATTR_NON_NULL_PTR_ARG(1) ATTR_ALWAYS_INLINE;
static inline int8_t Audio_Device_ReadSample8(USB_ClassInfo_Audio_Device_t* const AudioInterfaceInfo)
{
int8_t Sample;
-
+
(void)AudioInterfaceInfo;
Sample = Endpoint_Read_Byte();
if (!(Endpoint_BytesInEndpoint()))
Endpoint_ClearOUT();
-
+
return Sample;
}
/** Reads the next 16-bit audio sample from the current audio interface.
*
- * \note This should be preceded immediately by a call to the USB_Audio_IsSampleReceived() function to ensure that
- * the correct endpoint is selected and ready for data.
+ * \pre This should be preceded immediately by a call to the \ref Audio_Device_IsSampleReceived() function to ensure
+ * that the correct endpoint is selected and ready for data.
*
- * \param[in,out] AudioInterfaceInfo Pointer to a structure containing an Audio Class configuration and state
+ * \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
+ * \return Signed 16-bit audio sample from the audio interface.
*/
- static inline int16_t Audio_Device_ReadSample16(USB_ClassInfo_Audio_Device_t* const AudioInterfaceInfo) ATTR_ALWAYS_INLINE;
+ static inline int16_t Audio_Device_ReadSample16(USB_ClassInfo_Audio_Device_t* const AudioInterfaceInfo)
+ ATTR_NON_NULL_PTR_ARG(1) ATTR_ALWAYS_INLINE;
static inline int16_t Audio_Device_ReadSample16(USB_ClassInfo_Audio_Device_t* const AudioInterfaceInfo)
{
int16_t Sample;
(void)AudioInterfaceInfo;
Sample = (int16_t)Endpoint_Read_Word_LE();
-
+
if (!(Endpoint_BytesInEndpoint()))
Endpoint_ClearOUT();
/** Reads the next 24-bit audio sample from the current audio interface.
*
- * \note This should be preceded immediately by a call to the USB_Audio_IsSampleReceived() function to ensure that
- * the correct endpoint is selected and ready for data.
+ * \pre This should be preceded immediately by a call to the \ref Audio_Device_IsSampleReceived() function to ensure
+ * that the correct endpoint is selected and ready for data.
*
- * \param[in,out] AudioInterfaceInfo Pointer to a structure containing an Audio Class configuration and state
+ * \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
+ * \return Signed 24-bit audio sample from the audio interface.
*/
- static inline int32_t Audio_Device_ReadSample24(USB_ClassInfo_Audio_Device_t* const AudioInterfaceInfo) ATTR_ALWAYS_INLINE;
+ static inline int32_t Audio_Device_ReadSample24(USB_ClassInfo_Audio_Device_t* const AudioInterfaceInfo)
+ ATTR_NON_NULL_PTR_ARG(1) ATTR_ALWAYS_INLINE;
static inline int32_t Audio_Device_ReadSample24(USB_ClassInfo_Audio_Device_t* const AudioInterfaceInfo)
{
int32_t Sample;
(void)AudioInterfaceInfo;
Sample = (((uint32_t)Endpoint_Read_Byte() << 16) | Endpoint_Read_Word_LE());
-
+
if (!(Endpoint_BytesInEndpoint()))
Endpoint_ClearOUT();
/** Writes the next 8-bit audio sample to the current audio interface.
*
- * \note This should be preceded immediately by a call to the USB_Audio_IsReadyForNextSample() function to ensure that
- * the correct endpoint is selected and ready for data.
+ * \pre This should be preceded immediately by a call to the \ref Audio_Device_IsReadyForNextSample() function to
+ * ensure that the correct endpoint 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
+ * \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_Device_WriteSample8(USB_ClassInfo_Audio_Device_t* const AudioInterfaceInfo,
- const int8_t Sample) ATTR_ALWAYS_INLINE;
+ const int8_t Sample) ATTR_NON_NULL_PTR_ARG(1) ATTR_ALWAYS_INLINE;
static inline void Audio_Device_WriteSample8(USB_ClassInfo_Audio_Device_t* const AudioInterfaceInfo,
const int8_t Sample)
{
/** Writes the next 16-bit audio sample to the current audio interface.
*
- * \note This should be preceded immediately by a call to the USB_Audio_IsReadyForNextSample() function to ensure that
- * the correct endpoint is selected and ready for data.
+ * \pre This should be preceded immediately by a call to the \ref Audio_Device_IsReadyForNextSample() function to
+ * ensure that the correct endpoint 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
+ * \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_Device_WriteSample16(USB_ClassInfo_Audio_Device_t* const AudioInterfaceInfo,
- const int16_t Sample) ATTR_ALWAYS_INLINE;
+ const int16_t Sample) ATTR_NON_NULL_PTR_ARG(1) ATTR_ALWAYS_INLINE;
static inline void Audio_Device_WriteSample16(USB_ClassInfo_Audio_Device_t* const AudioInterfaceInfo,
const int16_t Sample)
{
/** Writes the next 24-bit audio sample to the current audio interface.
*
- * \note This should be preceded immediately by a call to the USB_Audio_IsReadyForNextSample() function to ensure that
- * the correct endpoint is selected and ready for data.
+ * \pre This should be preceded immediately by a call to the \ref Audio_Device_IsReadyForNextSample() function to
+ * ensure that the correct endpoint 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
+ * \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_Device_WriteSample24(USB_ClassInfo_Audio_Device_t* const AudioInterfaceInfo,
- const int32_t Sample) ATTR_ALWAYS_INLINE;
+ const int32_t Sample) ATTR_NON_NULL_PTR_ARG(1) ATTR_ALWAYS_INLINE;
static inline void Audio_Device_WriteSample24(USB_ClassInfo_Audio_Device_t* const AudioInterfaceInfo,
const int32_t Sample)
{
#if defined(__cplusplus)
}
#endif
-
+
#endif
/** @} */
+
projects / pub / USBasp.git / blobdiff