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SingleThreadedAbstractFifo Class Reference

Encapsulates the logic for a single-threaded FIFO. More...

Public Member Functions

 SingleThreadedAbstractFifo ()=default
 Creates a SingleThreadedAbstractFifo with no size. More...
 
 SingleThreadedAbstractFifo (int sizeIn)
 Creates a SingleThreadedAbstractFifo that can manage a buffer of the specified size. More...
 
int getRemainingSpace () const
 Returns the number of unused elements present in the buffer. More...
 
int getNumReadable () const
 Returns the number of pending elements present in the buffer. More...
 
int getSize () const
 Returns the size of the managed buffer. More...
 
std::array< Range< int >, 2 > write (int num)
 Returns two blocks in the buffer where new items may be written. More...
 
std::array< Range< int >, 2 > read (int num)
 Returns two blocks in the buffer from which new items may be read. More...
 

Detailed Description

Encapsulates the logic for a single-threaded FIFO.

This might be useful for building buffers which can be written and read in blocks of different sizes. For example, in an audio effect we might wish to run some processing on fixed-size blocks of audio input, but the host may provide input blocks of varying sizes. In this situation, we might want to store the previous input in a buffer, and extract a fixed-size block whenever there are enough samples available. The SingleThreadedAbstractFifo implements logic suitable for this use-case.

This class is quite similar to AbstractFifo, in that it only keeps track of the current read/write locations. The user is responsible for providing the actual buffer that will be read/written.

The intended usage of this class is as follows:

Unlike AbstractFifo, the SingleThreadedAbstractFifo is intended for use from a single thread. It is not safe to call any non-const member function of SingleThreadedAbstractFifo concurrently with any other member function.

See also
AbstractFifo

Constructor & Destructor Documentation

◆ SingleThreadedAbstractFifo() [1/2]

SingleThreadedAbstractFifo::SingleThreadedAbstractFifo ( )
default

Creates a SingleThreadedAbstractFifo with no size.

◆ SingleThreadedAbstractFifo() [2/2]

SingleThreadedAbstractFifo::SingleThreadedAbstractFifo ( int  sizeIn)
explicit

Creates a SingleThreadedAbstractFifo that can manage a buffer of the specified size.

References isPowerOfTwo(), and jassert.

Member Function Documentation

◆ getRemainingSpace()

int SingleThreadedAbstractFifo::getRemainingSpace ( ) const

Returns the number of unused elements present in the buffer.

Referenced by write().

◆ getNumReadable()

int SingleThreadedAbstractFifo::getNumReadable ( ) const

Returns the number of pending elements present in the buffer.

◆ getSize()

int SingleThreadedAbstractFifo::getSize ( ) const

Returns the size of the managed buffer.

◆ write()

std::array<Range<int>, 2> SingleThreadedAbstractFifo::write ( int  num)

Returns two blocks in the buffer where new items may be written.

Note that if the buffer is running low on free space, the sum of the lengths of the returned ranges may be less than num!

References getRemainingSpace(), jmin(), and gl::num.

◆ read()

std::array<Range<int>, 2> SingleThreadedAbstractFifo::read ( int  num)

Returns two blocks in the buffer from which new items may be read.

Note that if the buffer doesn't have the requested number of items available, the sum of the lengths of the returned ranges may be less than num!

References jmin(), and gl::num.


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