Added new EVENT_Audio_StreamStartStopChange() event to the Audio Device Class driver to detect stream start/stop events.pull/1469/head
Dean Camera
14 years ago
parent
605ef921cc
commit
e572ee7ff2
File diff suppressed because one or more lines are too long
@ -0,0 +1,208 @@
|
||||
/*
|
||||
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 (!(DataINEndpoint) || !(DataOUTEndpoint))
|
||||
{
|
||||
if (!(AudioControlInterface) ||
|
||||
USB_GetNextDescriptorComp(&ConfigDescriptorSize, &ConfigDescriptorData,
|
||||
DComp_NextAudioInterfaceDataEndpoint) != DESCRIPTOR_SEARCH_COMP_Found)
|
||||
{
|
||||
if (!(AudioControlInterface) ||
|
||||
USB_GetNextDescriptorComp(&ConfigDescriptorSize, &ConfigDescriptorData,
|
||||
DComp_NextAudioStreamInterface) != DESCRIPTOR_SEARCH_COMP_Found)
|
||||
{
|
||||
if (USB_GetNextDescriptorComp(&ConfigDescriptorSize, &ConfigDescriptorData,
|
||||
DComp_NextAudioControlInterface) != DESCRIPTOR_SEARCH_COMP_Found)
|
||||
{
|
||||
return AUDIO_ENUMERROR_NoCompatibleInterfaceFound;
|
||||
}
|
||||
|
||||
AudioControlInterface = DESCRIPTOR_PCAST(ConfigDescriptorData, USB_Descriptor_Interface_t);
|
||||
|
||||
if (USB_GetNextDescriptorComp(&ConfigDescriptorSize, &ConfigDescriptorData,
|
||||
DComp_NextAudioStreamInterface) != DESCRIPTOR_SEARCH_COMP_Found)
|
||||
{
|
||||
return AUDIO_ENUMERROR_NoCompatibleInterfaceFound;
|
||||
}
|
||||
}
|
||||
|
||||
AudioStreamingInterface = DESCRIPTOR_PCAST(ConfigDescriptorData, USB_Descriptor_Interface_t);
|
||||
|
||||
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_BULK;
|
||||
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_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_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_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,
|
||||
bool EnableStreaming)
|
||||
{
|
||||
if (!(AudioInterfaceInfo->State.IsActive))
|
||||
return HOST_SENDCONTROL_DeviceDisconnected;
|
||||
|
||||
return USB_Host_SetInterfaceAltSetting(AudioInterfaceInfo->State.StreamingInterfaceNumber,
|
||||
EnableStreaming ? AudioInterfaceInfo->State.EnabledStreamingAltIndex : 0);
|
||||
}
|
||||
|
||||
#endif
|
||||
|
||||
@ -0,0 +1,355 @@
|
||||
/*
|
||||
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 Class driver.
|
||||
*
|
||||
* Host mode driver for the library USB Audio 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 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 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. */
|
||||
uint8_t DataOUTPipeNumber; /**< Pipe number of the Audio interface's OUT data pipe. */
|
||||
} 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.
|
||||
*
|
||||
* \note The pipe index numbers as given in the interface's configuration structure must not overlap with any other
|
||||
* interface, or pipe bank corruption will occur. Gaps in the allocated pipe numbers or non-sequential indexes
|
||||
* within a single interface is allowed, but no two interfaces of any type have have interleaved pipe indexes.
|
||||
* \n\n
|
||||
*
|
||||
* \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,
|
||||
bool EnableStreaming);
|
||||
|
||||
/* 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;
|
||||
|
||||
Pipe_SelectPipe(AudioInterfaceInfo->Config.DataOUTPipeNumber);
|
||||
return Pipe_IsINReceived();
|
||||
}
|
||||
|
||||
/** 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.DataINPipeNumber);
|
||||
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_ClearIN();
|
||||
|
||||
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_ClearIN();
|
||||
|
||||
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_ClearIN();
|
||||
|
||||
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_BytesInPipe() == AudioInterfaceInfo->State.DataINPipeSize)
|
||||
Pipe_ClearOUT();
|
||||
}
|
||||
|
||||
/** 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_BytesInPipe() == AudioInterfaceInfo->State.DataINPipeSize)
|
||||
Pipe_ClearOUT();
|
||||
}
|
||||
|
||||
/** 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_BytesInPipe() == AudioInterfaceInfo->State.DataINPipeSize)
|
||||
Pipe_ClearOUT();
|
||||
}
|
||||
|
||||
/* Private Interface - For use in library only: */
|
||||
#if !defined(__DOXYGEN__)
|
||||
/* Function Prototypes: */
|
||||
#if defined(__INCLUDE_FROM_AUDIO_HOST_C)
|
||||
static uint8_t DComp_NextAudioControlInterface(void* CurrentDescriptor);
|
||||
static uint8_t DComp_NextAudioStreamInterface(void* CurrentDescriptor);
|
||||
static uint8_t DComp_NextAudioInterfaceDataEndpoint(void* CurrentDescriptor);
|
||||
#endif
|
||||
#endif
|
||||
|
||||
/* Disable C linkage for C++ Compilers: */
|
||||
#if defined(__cplusplus)
|
||||
}
|
||||
#endif
|
||||
|
||||
#endif
|
||||
|
||||
/** @} */
|
||||
|
||||
Loading…
Reference in new issue