StormByte::Multimedia::FFmpeg::AudioFifo Class Reference

RAII AVAudioFifo for sample buffering (loudnorm / encoder). More...

#include <StormByte/multimedia/ffmpeg/AudioFifo.hxx>

Inheritance diagram for StormByte::Multimedia::FFmpeg::AudioFifo:

Collaboration diagram for StormByte::Multimedia::FFmpeg::AudioFifo:

Public Member Functions
	AudioFifo (AudioFifo &&other) noexcept=default
	Move constructor.
	~AudioFifo () noexcept override
	Destructor.
AudioFifo &	operator= (AudioFifo &&other) noexcept=default
	Move assignment.
	operator bool () const noexcept
	Whether a fifo is allocated.
int	Size () const noexcept
	Samples currently stored.
int	Space () const noexcept
	Free sample slots.
bool	Write (const AVFrame &src) noexcept
	Appends src samples to the fifo.
bool	Read (AVFrame &dst, int nb_samples) noexcept
	Reads nb_samples into dst (already allocated).
bool	Realloc (int nb_samples) noexcept
	Grows the fifo so it can hold at least nb_samples.
Public Member Functions inherited from StormByte::Multimedia::FFmpeg::AVPointer<::AVAudioFifo >
constexpr	AVPointer () noexcept=delete
	Default constructor (deleted).
constexpr	AVPointer (const AVPointer &) noexcept=delete
	Copy constructor (deleted).
constexpr	AVPointer (AVPointer &&other) noexcept
	Move constructor.
virtual	~AVPointer () noexcept=default
	Destructor.
constexpr AVPointer &	operator= (const AVPointer &) noexcept=delete
	Copy assignment (deleted).
constexpr AVPointer &	operator= (AVPointer &&other) noexcept
	Move assignment.

Static Public Member Functions
static AudioFifo	Open (int sample_fmt, int channels, int nb_samples) noexcept
	Allocates a fifo.

Additional Inherited Members
Protected Member Functions inherited from StormByte::Multimedia::FFmpeg::AVPointer<::AVAudioFifo >
constexpr	AVPointer (std::decay_t< ::AVAudioFifo > *ptr) noexcept
	Adopts ptr.
constexpr const std::decay_t< ::AVAudioFifo > *	Get () const noexcept
	Const view of the raw FFmpeg pointer.
constexpr std::decay_t< ::AVAudioFifo > *	Get () noexcept
	Mutable view of the raw FFmpeg pointer.
constexpr std::decay_t< ::AVAudioFifo > *	Detach () noexcept
	Yields the raw pointer and leaves this wrapper empty.
Protected Attributes inherited from StormByte::Multimedia::FFmpeg::AVPointer<::AVAudioFifo >
std::decay_t< ::AVAudioFifo > *	m_ptr
	Owned FFmpeg pointer.

Detailed Description

RAII AVAudioFifo for sample buffering (loudnorm / encoder).

Constructor & Destructor Documentation

AudioFifo()

StormByte::Multimedia::FFmpeg::AudioFifo::AudioFifo ( AudioFifo &&  other )

defaultnoexcept

Move constructor.

Transfers the fifo.

Parameters

other

Source fifo; left empty.

~AudioFifo()

StormByte::Multimedia::FFmpeg::AudioFifo::~AudioFifo ( )

overridenoexcept

Destructor.

Frees the AVAudioFifo.

Member Function Documentation

Open()

static AudioFifo StormByte::Multimedia::FFmpeg::AudioFifo::Open ( int  sample_fmt, int  channels, int  nb_samples  )

staticnoexcept

Allocates a fifo.

Empty wrapper on failure.

Parameters

sample_fmt	AVSampleFormat as int.
channels	Channel count.
nb_samples	Initial capacity in samples.

Returns

Open fifo, or empty on failure.

operator bool()

StormByte::Multimedia::FFmpeg::AudioFifo::operator bool ( ) const

explicitnoexcept

Whether a fifo is allocated.

Returns

true if Write / Read can run.

operator=()

AudioFifo & StormByte::Multimedia::FFmpeg::AudioFifo::operator= ( AudioFifo &&  other )

defaultnoexcept

Move assignment.

Frees *this, then takes other.

Parameters

other

Source fifo; left empty.

Returns

*this.

Read()

bool StormByte::Multimedia::FFmpeg::AudioFifo::Read ( AVFrame &  dst, int  nb_samples  )

noexcept

Reads nb_samples into dst (already allocated).

Parameters

dst	Destination audio frame.
nb_samples	Samples to read.

Returns

false on failure.

Realloc()

bool StormByte::Multimedia::FFmpeg::AudioFifo::Realloc ( int  nb_samples )

noexcept

Grows the fifo so it can hold at least nb_samples.

Parameters

nb_samples

Minimum capacity in samples.

Returns

false on failure.

Size()

int StormByte::Multimedia::FFmpeg::AudioFifo::Size ( ) const

noexcept

Samples currently stored.

Returns

Sample count, or 0.

Space()

int StormByte::Multimedia::FFmpeg::AudioFifo::Space ( ) const

noexcept

Free sample slots.

Returns

Remaining capacity, or 0.

Write()

bool StormByte::Multimedia::FFmpeg::AudioFifo::Write ( const AVFrame &  src )

noexcept

Appends src samples to the fifo.

Parameters

src	Source audio frame.

Returns

false on failure.

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

• lib/public/StormByte/multimedia/ffmpeg/AudioFifo.hxx