dxd::usb_stream_device::stream Class Reference

USB stream. More...

#include <dxd_usb_stream.h>

Inheritance diagram for dxd::usb_stream_device::stream:

Collaboration diagram for dxd::usb_stream_device::stream:

Public Member Functions
template<typename return_t = os_result, typename exec_t >
return_t	each (exec_t exec)
void	free ()
	frees circular backing store and frame buffers
os_result	initialize (::IOMemoryDescriptor *iokit_memory_descriptor)
	IOKit memory initializer.
os_result	initialize (::IOMemoryDescriptor *iokit_memory_descriptor)
	IOKit memory initializer.
os_result	initialize (::IOMemoryDescriptor *iokit_memory_descriptor, size_t offset, size_t size)
	IOKit memory initializer.
os_result	initialize (::IOMemoryDescriptor *iokit_memory_descriptor, size_t offset, size_t size)
	IOKit memory initializer.
os_result	initialize (::IOMemoryDescriptor *iokit_memory_descriptor, size_t offset=0)
	IOKit kernel map initializer.
os_result	initialize (const void *data, size_t size)
	IOKit memory initializer.
os_result	initialize (const void *data, size_t size)
	IOKit memory initializer.
os_result	initialize (const::MDL *mdl)
os_result	initialize (const::MDL *mdl)
os_result	initialize (const::MDL *mdl, size_t offset, size_t size)
os_result	initialize (const::MDL *mdl, size_t offset, size_t size)
os_result	initialize (size_t size, unsigned int limit=64, unsigned int alignment=0, bool contigous=false)
	IOKit buffer initializer.
os_result	initialize (unsigned int buffers)
	creates circular backing store and frame buffers for non-isoc streaming
os_result	initialize (unsigned int line_size, unsigned int cycles, unsigned int samplerate)
	creates circular backing store and frame buffers for isoc streaming
os_result	initialize (void *data, size_t size)
	IOKit memory initializer.
os_result	initialize (void *data, size_t size)
	IOKit memory initializer.
os_result	line_size (unsigned int line_size)
	sets the line_size
	operator const dx::circular * () const
	operator const::IOMemoryDescriptor * () const
	IOKit IOMemoryDescriptor* implicit cast.
	operator const::IOMemoryDescriptor * () const
	IOKit IOMemoryDescriptor* implicit cast.
	operator const::IOMemoryMap * () const
	operator dx::circular * () const
	operator uint64_t () const
	IOKit physical address (only relevant for contigous memory)
	operator uint64_t () const
	IOKit physical address (only relevant for contigous memory)
dx::circular *	operator-> ()
const dx::circular *	operator-> () const
	operator to use mapping like pointer
	operator::IOMemoryDescriptor * ()
	operator::IOMemoryDescriptor * ()
	operator::IOMemoryMap * ()
	operator::MDL * () const
	operator::MDL * () const
item_t *	pop ()
	pop item from head
doubly::linked::abstract::event *	pop (doubly::linked::abstract::event *item)
	pop item
list &	print ()
doubly::linked::abstract::event *	push (doubly::linked::abstract::event *item)
	push item to head
item_t *	push (item_t *item)
	push item to head
template<typename reference_t >
int	release (reference_t &reference)
void	retain ()
dx::uint24	samplerate () const
os_result	samplerate (dx::uint24 samplerate)
	sets the sampling rate
os_result	signal ()
size_t	size () const
	IOKit memory size.
size_t	size () const
	IOKit memory size.
size_t	size () const
	kernel mapping size
os_result	start (bool force=false) override
	starts the USB streaming
os_result	stop (bool force=false) override
	stream (class usb_stream_device &usb_stream_device, const dx::stream::open< dx::usb::endpoint > &open)
	USB endpoint constructor.
os_result	synchronize ()
	synchronizes to isoc device cycles
	~stream () override
	stream destructor

Public Attributes
event	data
	data available event
event	gap
	gap (space) available event
atomic< int >	references {}
os_result	status =not_initialized

Protected Types
enum	direction { in =::kEndpointDescriptorDirectionIn , out =::kEndpointDescriptorDirectionOut }
enum	type {   isoc =::kEndpointDescriptorTransferTypeIsochronous , bulk =::kEndpointDescriptorTransferTypeBulk , interrupt =::kEndpointDescriptorTransferTypeInterrupt , control = ::UsbdPipeTypeControl ,   isoc =::kEndpointDescriptorTransferTypeIsochronous , bulk =::kEndpointDescriptorTransferTypeBulk , interrupt =::kEndpointDescriptorTransferTypeInterrupt }
enum	type {   isoc =::kEndpointDescriptorTransferTypeIsochronous , bulk =::kEndpointDescriptorTransferTypeBulk , interrupt =::kEndpointDescriptorTransferTypeInterrupt , control = ::UsbdPipeTypeControl ,   isoc =::kEndpointDescriptorTransferTypeIsochronous , bulk =::kEndpointDescriptorTransferTypeBulk , interrupt =::kEndpointDescriptorTransferTypeInterrupt }

Protected Member Functions
os_result	abort ()
	IOKit: abort all outstanding requests and waits until all requests have been finalized.
os_result	abort ()
	WDK pipe abort.
os_result	clear ()
os_result	clear ()
	WDK pipe stall reset, toggle.
direction	direction () const
direction	direction () const
os_result	max_frame_size (unsigned int frame_size)
os_result	max_frame_size (unsigned int frame_size)
	operator::USBD_PIPE_HANDLE () const
os_result	read (::IOMemoryDescriptor *memory, uint64_t &sequence, isoc_frame *frame, unsigned int frames) const
	IOKit: USB synchronous irq/bulk read request.
os_result	read (::MDL *mdl, uint64_t &sequence, isoc_frame *frame, unsigned int frames)
os_result	receive (::IOMemoryDescriptor *memory)
	IOKit: USB asynchronous irq/bulk receive request.
os_result	receive (::IOMemoryDescriptor *memory, uint64_t &sequence, isoc_frame *frame, unsigned int frames)
	IOKit: USB asynchronous isochronous read request.
os_result	receive (::MDL *mdl)
	WDK: USB asynchronous irq/bulk receive request.
os_result	receive (::MDL *mdl, uint64_t &sequence, isoc_frame *frame, unsigned int frames)
os_result	state () const
	IOKit: IOUSBPipe* implicit cast.
os_result	transmit (const ::MDL *mdl)
	WDK: USB asynchronous irq/bulk transmit request.
os_result	transmit (const ::MDL *mdl, uint64_t &sequence, isoc_frame *frame, unsigned int frames)
os_result	transmit (const::IOMemoryDescriptor *memory, uint64_t &sequence, isoc_frame *frame, unsigned int frames)
	IOKit: USB asynchronous isochronous write request.
type	type () const
type	type () const
template<typename data_t >
os_result	write (const data_t &data) const
template<dx::scope scope_t, typename data_t >
os_result	write (const data_t &data) const
template<typename data_t >
os_result	write (const data_t &data) const
os_result	write (const void *data, size_t size) const
template<dx::scope scope_t>
os_result	write (const void *data, size_t size) const
os_result	write (const void *data, size_t size) const
os_result	write (const::IOMemoryDescriptor *memory) const
	IOKit: USB synchronous irq/bulk write request.
os_result	write (const::MDL *mdl) const
	WDK: USB synchronous isochronous write request.

Protected Attributes
dx::circular *	_vm
	kernel virtual address mapping
unsigned char	address
unsigned short	frame_size =1
unsigned char	interval =1
::IOMemoryMap *	iokit_memory_map

Friends
struct	dx::circular

Detailed Description

USB stream.

Handling of high speed/low latency/high performance streams:

• 3 requests with dedicated buffers are circulating: (a) actually handled - (p) to be prepared - (w) request waiting for device 0:(p) (a) (w) 1:(w) (p) (a) 2:(a) (w) (p) This way there is always at least one request scheduled(w). When data ready is signalled a new request is first scheduled(p) and the (a) actual data is handled. The cycle starts by scheduling (p) and (w).

Exceptions

os_result

an error returned by the underlaying KPIs is reflected by the methods return value. The object status can be retrieved by the status member.

Member Enumeration Documentation

direction

enum dxd::usb_device::pipe::direction

inherited

Enumerator
in
out

type [1/2]

enum dxd::usb_device::pipe::type

inherited

Enumerator
isoc
bulk
interrupt
control
isoc
bulk
interrupt

type [2/2]

enum dxd::usb_device::pipe::type

inherited

bills "compiler" still does exercises - until it learnt a bit more c++ enums need to go here to be available during rest of class definition.

Enumerator
isoc
bulk
interrupt
control
isoc
bulk
interrupt

Constructor & Destructor Documentation

stream()

dxd::usb_stream_device::stream::stream ( class usb_stream_device & usb_stream_device, const dx::stream::open< dx::usb::endpoint > & open )

inline

USB endpoint constructor.

Checks the underlaying pipe construction state,

Todo

default sample rate from clock description

Todo

dxd::usb::stream: follow dxd stream changes

check process creation status

Parameters

usb_stream_device	USB device
open	stream metrics

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~stream()

dxd::usb_stream_device::stream::~stream ( )

inlineoverridevirtual

stream destructor

Reimplemented from dxd::stream.

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Member Function Documentation

abort() [1/2]

os_result dxd::usb_device::pipe::abort ( )

inlineinherited

IOKit: abort all outstanding requests and waits until all requests have been finalized.

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abort() [2/2]

os_result dxd::usb_device::pipe::abort ( )

inlineinherited

WDK pipe abort.

clear() [1/2]

os_result dxd::usb_device::pipe::clear ( )

inlineinherited

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clear() [2/2]

os_result dxd::usb_device::pipe::clear ( )

inlineinherited

WDK pipe stall reset, toggle.

direction() [1/2]

direction dxd::usb_device::pipe::direction ( ) const

inlineinherited

direction() [2/2]

direction dxd::usb_device::pipe::direction ( ) const

inlineinherited

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each()

template<typename item_t = link>

template<typename return_t = os_result, typename exec_t >

return_t dxd::linked::list< item_t >::each ( exec_t exec )

inlineinherited

free()

void dxd::usb_stream_device::stream::free ( )

inline

frees circular backing store and frame buffers

stops any outstanding requests,

releases intermittent device frame buffer,

unmaps kernel mapping to backing store

and release backing store.

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initialize() [1/16]

template<dx::scope scope_t = dx::kernel>

os_result dxd::memory< scope_t >::initialize ( ::IOMemoryDescriptor * iokit_memory_descriptor )

inlineinherited

IOKit memory initializer.

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initialize() [2/16]

os_result dxd::memory< scope_t >::initialize ( ::IOMemoryDescriptor * iokit_memory_descriptor )

inlineinherited

IOKit memory initializer.

initialize() [3/16]

os_result dxd::memory< scope_t >::initialize ( ::IOMemoryDescriptor * iokit_memory_descriptor, size_t offset, size_t size )

inlineinherited

IOKit memory initializer.

initialize() [4/16]

template<dx::scope scope_t = dx::kernel>

os_result dxd::memory< scope_t >::initialize ( ::IOMemoryDescriptor * iokit_memory_descriptor, size_t offset, size_t size )

inlineinherited

IOKit memory initializer.

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initialize() [5/16]

os_result dxd::map< scope_t, dx::circular >::initialize ( ::IOMemoryDescriptor * iokit_memory_descriptor, size_t offset = 0 )

inlineinherited

IOKit kernel map initializer.

map<kernel> maps an IOMemoryDescriptor (typically cast of a dxd::memory or buffer class) into the kernel address space.

https://developer.apple.com/library/content/qa/qa1197/_index.html

Allows re-initialization.

Checks buffer object,

maps the buffer into the kernel (will fail if offset is given)

and obtains a kernel virtual address (apply offset here instead).

Parameters

iokit_memory_descriptor	IOMemoryDescriptor to be mapped into the kernel address space
offset	offset into memory descriptor to create mapping

initialize() [6/16]

template<dx::scope scope_t = dx::kernel>

os_result dxd::memory< scope_t >::initialize ( const void * data, size_t size )

inherited

IOKit memory initializer.

Parameters

data	virtual base address of range to create memory descriptor from
size	size of range to create memory descriptor from

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initialize() [7/16]

os_result dxd::memory< scope_t >::initialize ( const void * data, size_t size )

inherited

IOKit memory initializer.

Parameters

data	virtual base address of range to create memory descriptor from
size	size of range to create memory descriptor from

initialize() [8/16]

os_result dxd::memory< scope_t >::initialize ( const::MDL * mdl )

inlineinherited

in contrast to an IOKit MemoryDescriptor MDLs do not support reference counting. take care when creating a dxd::memory from a dxd::buffer: although the dxd::memory holds an MDL to the buffer the buffer itself is not retained after the dxd::buffer is released!

initialize() [9/16]

template<dx::scope scope_t = dx::kernel>

os_result dxd::memory< scope_t >::initialize ( const::MDL * mdl )

inlineinherited

in contrast to an IOKit MemoryDescriptor MDLs do not support reference counting. take care when creating a dxd::memory from a dxd::buffer: although the dxd::memory holds an MDL to the buffer the buffer itself is not retained after the dxd::buffer is released!

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initialize() [10/16]

template<dx::scope scope_t = dx::kernel>

os_result dxd::memory< scope_t >::initialize ( const::MDL * mdl, size_t offset, size_t size )

inlineinherited

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initialize() [11/16]

os_result dxd::memory< scope_t >::initialize ( const::MDL * mdl, size_t offset, size_t size )

inlineinherited

initialize() [12/16]

os_result dxd::buffer< scope_t, 64 , 0 , false >::initialize ( size_t size, unsigned int limit = limit_t, unsigned int alignment = alignment_t, bool contigous = contigous_t )

inlineinherited

IOKit buffer initializer.

Allows re-initialization.

Creates a buffer and associated memory descriptor.

Wires down the backing store memory.

Parameters

size	size to be alloced by buffer object
limit	limit physical memory address space
alignment	enforce physical memory alignment
contigous	enforce contiguos physical memory

initialize() [13/16]

os_result dxd::usb_stream_device::stream::initialize ( unsigned int buffers )

inline

creates circular backing store and frame buffers for non-isoc streaming

create streaming backing store (twice the required size to accomodate single request wrap arounds)

map it

initializes circular buffer

creates frames inside backing store for continously overlapped streaming requests

creates intermittent device frame buffer

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initialize() [14/16]

os_result dxd::usb_stream_device::stream::initialize ( unsigned int line_size, unsigned int cycles, unsigned int samplerate )

inline

creates circular backing store and frame buffers for isoc streaming

Todo

initialize also RX isoc when no extralines are required

generates isoc cycle metrics from sample rate,

update max frame size

Todo

reset max frame size when pipe is closed

create backing store memory,

map it

initializes circular buffer

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initialize() [15/16]

os_result dxd::memory< scope_t >::initialize ( void * data, size_t size )

inherited

IOKit memory initializer.

Parameters

data	virtual base address of range to create memory descriptor from
size	size of range to create memory descriptor from

initialize() [16/16]

template<dx::scope scope_t = dx::kernel>

os_result dxd::memory< scope_t >::initialize ( void * data, size_t size )

inherited

IOKit memory initializer.

Parameters

data	virtual base address of range to create memory descriptor from
size	size of range to create memory descriptor from

line_size()

os_result dxd::usb_stream_device::stream::line_size ( unsigned int line_size )

inline

sets the line_size

may reinitialize streaming (different buffering!)

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max_frame_size() [1/2]

os_result dxd::usb_device::pipe::max_frame_size ( unsigned int frame_size )

inlineinherited

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max_frame_size() [2/2]

os_result dxd::usb_device::pipe::max_frame_size ( unsigned int frame_size )

inlineinherited

Todo

implement WDK USB max_frame_size() bandwidth adjustment

operator const dx::circular *()

dxd::map< scope_t, dx::circular >::operator const dx::circular * ( ) const

inlineinherited

operator const::IOMemoryDescriptor *() [1/2]

template<dx::scope scope_t = dx::kernel>

dxd::memory< scope_t >::operator const::IOMemoryDescriptor * ( ) const

inlineinherited

IOKit IOMemoryDescriptor* implicit cast.

operator const::IOMemoryDescriptor *() [2/2]

dxd::memory< scope_t >::operator const::IOMemoryDescriptor * ( ) const

inlineinherited

IOKit IOMemoryDescriptor* implicit cast.

operator const::IOMemoryMap *()

dxd::map< scope_t, dx::circular >::operator const::IOMemoryMap * ( ) const

inlineinherited

operator dx::circular *()

dxd::map< scope_t, dx::circular >::operator dx::circular * ( ) const

inlineinherited

operator uint64_t() [1/2]

dxd::memory< scope_t >::operator uint64_t ( ) const

inlineinherited

IOKit physical address (only relevant for contigous memory)

operator uint64_t() [2/2]

template<dx::scope scope_t = dx::kernel>

dxd::memory< scope_t >::operator uint64_t ( ) const

inlineinherited

IOKit physical address (only relevant for contigous memory)

operator->() [1/2]

dx::circular * dxd::map< scope_t, dx::circular >::operator-> ( )

inlineinherited

operator->() [2/2]

const dx::circular * dxd::map< scope_t, dx::circular >::operator-> ( ) const

inlineinherited

operator to use mapping like pointer

operator::IOMemoryDescriptor *() [1/2]

template<dx::scope scope_t = dx::kernel>

dxd::memory< scope_t >::operator::IOMemoryDescriptor * ( )

inlineinherited

operator::IOMemoryDescriptor *() [2/2]

dxd::memory< scope_t >::operator::IOMemoryDescriptor * ( )

inlineinherited

operator::IOMemoryMap *()

dxd::map< scope_t, dx::circular >::operator::IOMemoryMap * ( )

inlineinherited

operator::MDL *() [1/2]

dxd::memory< scope_t >::operator::MDL * ( ) const

inlineinherited

operator::MDL *() [2/2]

template<dx::scope scope_t = dx::kernel>

dxd::memory< scope_t >::operator::MDL * ( ) const

inlineinherited

operator::USBD_PIPE_HANDLE()

dxd::usb_device::pipe::operator::USBD_PIPE_HANDLE ( ) const

inlineinherited

pop() [1/2]

template<typename item_t = link>

item_t * dxd::linked::list< item_t >::pop ( )

inlineinherited

pop item from head

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pop() [2/2]

doubly::linked::abstract::event * dxd::doubly::linked::list< doubly::linked::abstract::event >::pop ( doubly::linked::abstract::event * item )

inlineinherited

pop item

print()

list & dxd::doubly::linked::list< doubly::linked::abstract::event >::print ( )

inlineinherited

push() [1/2]

doubly::linked::abstract::event * dxd::doubly::linked::list< doubly::linked::abstract::event >::push ( doubly::linked::abstract::event * item )

inlineinherited

push item to head

push() [2/2]

template<typename item_t = link>

item_t * dxd::linked::list< item_t >::push ( item_t * item )

inlineinherited

push item to head

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read() [1/2]

os_result dxd::usb_device::pipe::read ( ::IOMemoryDescriptor * memory, uint64_t & sequence, isoc_frame * frame, unsigned int frames ) const

inlineinherited

IOKit: USB synchronous irq/bulk read request.

IOKit: USB synchronous isochronous read request

Parameters

memory

memory descriptor of the data to be read

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read() [2/2]

os_result dxd::usb_device::pipe::read ( ::MDL * mdl, uint64_t & sequence, isoc_frame * frame, unsigned int frames )

inlineinherited

Parameters

mdl	memory descriptor of the data to be read

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receive() [1/4]

os_result dxd::usb_device::pipe::receive ( ::IOMemoryDescriptor * memory )

inlineinherited

IOKit: USB asynchronous irq/bulk receive request.

Parameters

memory

memory descriptor of the data to be read

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receive() [2/4]

os_result dxd::usb_device::pipe::receive ( ::IOMemoryDescriptor * memory, uint64_t & sequence, isoc_frame * frame, unsigned int frames )

inlineinherited

IOKit: USB asynchronous isochronous read request.

Parameters

memory

memory descriptor of the data to be read

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receive() [3/4]

os_result dxd::usb_device::pipe::receive ( ::MDL * mdl )

inlineinherited

WDK: USB asynchronous irq/bulk receive request.

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receive() [4/4]

os_result dxd::usb_device::pipe::receive ( ::MDL * mdl, uint64_t & sequence, isoc_frame * frame, unsigned int frames )

inlineinherited

Parameters

mdl	memory descriptor of the data to be read

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release()

template<typename reference_t >

int dxd::referenced::release ( reference_t & reference )

inlineinherited

retain()

void dxd::referenced::retain ( )

inlineinherited

samplerate() [1/2]

dx::uint24 dxd::usb_stream_device::stream::samplerate ( ) const

inline

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samplerate() [2/2]

os_result dxd::usb_stream_device::stream::samplerate ( dx::uint24 samplerate )

inline

sets the sampling rate

may reinitialize streaming (different buffering!)

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signal()

os_result dxd::broadcast::signal ( )

inlineinherited

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size() [1/3]

template<dx::scope scope_t = dx::kernel>

size_t dxd::memory< scope_t >::size ( ) const

inlineinherited

IOKit memory size.

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size() [2/3]

size_t dxd::memory< scope_t >::size ( ) const

inlineinherited

IOKit memory size.

size() [3/3]

size_t dxd::map< scope_t, dx::circular >::size ( ) const

inlineinherited

kernel mapping size

start()

os_result dxd::usb_stream_device::stream::start ( bool force = false )

inlineoverridevirtual

starts the USB streaming

initializes/resets circular buffer

synchronizes to isoc device cycles,

estimate upcoming timestamp

Todo

compute timestamp in ticks (not nsec)!

scheduling all but one isoc requests at least 1 sequence ahead; aligned to whole cycles,

if stream is sync master

it starts the sync master thread

else starts the USB stream listener

initiates new async cycle: issue requests

Implements dxd::stream.

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state()

os_result dxd::usb_device::pipe::state ( ) const

inlineinherited

IOKit: IOUSBPipe* implicit cast.

IOKit: IOUSBPipe* operator

for internal use only

Deprecated

If you end-up using this operator in a consolidated driver source, you probably work around the dynax driver framework mechanics and should re-think your design.

Todo

find out if isInactive() is equivalent to getState()

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stop()

os_result dxd::usb_stream_device::stream::stop ( bool force = false )

inlineoverridevirtual

If stream is sync master on bulk/irq pipe

it signals the sync master mode thread,

and waits for thread to finish

todo: move abort before master wait to avoid blocking if device doesn't handle transaction

Implements dxd::stream.

synchronize()

os_result dxd::usb_stream_device::stream::synchronize ( )

inline

synchronizes to isoc device cycles

scheduling isoc sync request at least 1 complete cycles ahead; aligned to whole cycles,

correcting invalid frames

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transmit() [1/3]

os_result dxd::usb_device::pipe::transmit ( const ::MDL * mdl )

inlineinherited

WDK: USB asynchronous irq/bulk transmit request.

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transmit() [2/3]

os_result dxd::usb_device::pipe::transmit ( const ::MDL * mdl, uint64_t & sequence, isoc_frame * frame, unsigned int frames )

inlineinherited

Parameters

mdl	memory descriptor of the data to be written

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transmit() [3/3]

os_result dxd::usb_device::pipe::transmit ( const::IOMemoryDescriptor * memory, uint64_t & sequence, isoc_frame * frame, unsigned int frames )

inlineinherited

IOKit: USB asynchronous isochronous write request.

Parameters

memory

memory descriptor of the data to be written

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type() [1/2]

type dxd::usb_device::pipe::type ( ) const

inlineinherited

type() [2/2]

type dxd::usb_device::pipe::type ( ) const

inlineinherited

write() [1/8]

template<typename data_t >

os_result dxd::usb_device::pipe::write ( const data_t & data ) const

inlineinherited

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write() [2/8]

template<dx::scope scope_t, typename data_t >

os_result dxd::usb_device::pipe::write ( const data_t & data ) const

inlineinherited

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write() [3/8]

template<typename data_t >

os_result dxd::usb_device::pipe::write ( const data_t & data ) const

inlineinherited

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write() [4/8]

os_result dxd::usb_device::pipe::write ( const void * data, size_t size ) const

inlineinherited

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write() [5/8]

template<dx::scope scope_t>

os_result dxd::usb_device::pipe::write ( const void * data, size_t size ) const

inlineinherited

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write() [6/8]

os_result dxd::usb_device::pipe::write ( const void * data, size_t size ) const

inlineinherited

write() [7/8]

os_result dxd::usb_device::pipe::write ( const::IOMemoryDescriptor * memory ) const

inlineinherited

IOKit: USB synchronous irq/bulk write request.

Parameters

memory

memory descriptor of the data to be written

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write() [8/8]

os_result dxd::usb_device::pipe::write ( const::MDL * mdl ) const

inlineinherited

WDK: USB synchronous isochronous write request.

Todo

return number of written bytes

WDK: USB synchronous irq/bulk write request

Todo

return number of written bytes

Friends And Related Symbol Documentation

dx::circular

friend struct dx::circular

friend

Member Data Documentation

_vm

dx::circular * dxd::map< scope_t, dx::circular >::_vm

protectedinherited

kernel virtual address mapping

address

unsigned char dxd::usb_device::pipe::address

inherited

data

event dxd::usb_stream_device::stream::data

data available event

frame_size

unsigned short dxd::usb_device::pipe::frame_size =1

inherited

gap

event dxd::usb_stream_device::stream::gap

gap (space) available event

interval

unsigned char dxd::usb_device::pipe::interval =1

inherited

iokit_memory_map

::IOMemoryMap* dxd::map< scope_t, dx::circular >::iokit_memory_map

protectedinherited

references

atomic<int> dxd::referenced::references {}

inherited

status

os_result dxd::usb_stream_device::stream::status =not_initialized

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The documentation for this class was generated from the following file:

• dxd_usb_stream.h