vdr-plugin-softhddevice-drm-gles: cSoftHdRingbuffer Class Reference

vdr-plugin-softhddevice-drm-gles 1.4.0

cSoftHdRingbuffer - RingBuffer class More...

#include <ringbuffer.h>

Public Member Functions
	cSoftHdRingbuffer (size_t)
	cSoftHdRingbuffer constructor More...

virtual	~cSoftHdRingbuffer (void)
	cSoftHdRingbuffer destructor More...

void	Reset (void)
	Reset ring buffer pointers. More...

size_t	Write (const void *, size_t)
	Write to a ring buffer. More...

size_t	GetWritePointer (void **)
	Get write pointer and free bytes at this position of ring buffer. More...

size_t	WriteAdvance (size_t)
	Advance write pointer in ring buffer. More...

size_t	Read (void *, size_t)
	Read from a ring buffer. More...

size_t	GetReadPointer (const void **)
	Get read pointer and used bytes at this position of ring buffer. More...

size_t	ReadAdvance (size_t)
	Advance read pointer in ring buffer. More...

size_t	FreeBytes (void)
	Get free bytes in ring buffer. More...

size_t	UsedBytes (void)
	Get used bytes in ring buffer. More...

Private Attributes
char *	m_pBuffer
	ring buffer data More...

const char *	m_pBufferEnd
	end of buffer More...

size_t	m_Size
	bytes in buffer (for faster calc) More...

const char *	m_pReadPointer
	only used by reader More...

char *	m_pWritePointer
	only used by writer More...

atomic_t	m_filled
	how many of the buffer is used More...

Detailed Description

cSoftHdRingbuffer - RingBuffer class

Definition at line 34 of file ringbuffer.h.

Constructor & Destructor Documentation

◆ cSoftHdRingbuffer()

cSoftHdRingbuffer::cSoftHdRingbuffer ( size_t size )

cSoftHdRingbuffer constructor

Init a new ring buffer

Parameters

size	Size of the ring buffer

Definition at line 46 of file ringbuffer.cpp.

References atomic_set, LOGFATAL, m_filled, m_pBuffer, m_pBufferEnd, m_pReadPointer, m_pWritePointer, and m_Size.

◆ ~cSoftHdRingbuffer()

cSoftHdRingbuffer::~cSoftHdRingbuffer ( void )

virtual

cSoftHdRingbuffer destructor

Definition at line 61 of file ringbuffer.cpp.

References m_pBuffer.

Member Function Documentation

◆ FreeBytes()

size_t cSoftHdRingbuffer::FreeBytes ( void )

Get free bytes in ring buffer.

Returns: Number of bytes free in buffer

Definition at line 291 of file ringbuffer.cpp.

References atomic_read, m_filled, and m_Size.

Referenced by cSoftHdAudio::GetFreeBytes(), and cSoftHdAudio::IsBufferFull().

◆ GetReadPointer()

size_t cSoftHdRingbuffer::GetReadPointer ( const void ** rp )

Get read pointer and used bytes at this position of ring buffer.

Parameters

[out] rp Read pointer is placed here

Returns: The number of bytes that could be read from the ring buffer at the read pointer

Definition at line 266 of file ringbuffer.cpp.

References atomic_read, m_filled, m_pBufferEnd, and m_pReadPointer.

Referenced by cSoftHdAudio::CyclicCall().

◆ GetWritePointer()

size_t cSoftHdRingbuffer::GetWritePointer ( void ** wp )

Get write pointer and free bytes at this position of ring buffer.

Parameters

[out] wp Write pointer is placed here

Returns: The number of bytes that could be placed in the ring buffer at the write pointer.

Definition at line 161 of file ringbuffer.cpp.

References atomic_read, m_filled, m_pBufferEnd, m_pWritePointer, and m_Size.

◆ Read()

size_t cSoftHdRingbuffer::Read	(	void *	buf,
		size_t	cnt
	)

Read from a ring buffer.

Parameters

buf	buffer of `cnt` bytes to be read
cnt	Number of bytes to be read

Returns: Number of bytes that could be read from ring buffer

Definition at line 225 of file ringbuffer.cpp.

References atomic_read, atomic_sub, m_filled, m_pBuffer, m_pBufferEnd, and m_pReadPointer.

◆ ReadAdvance()

size_t cSoftHdRingbuffer::ReadAdvance ( size_t cnt )

Advance read pointer in ring buffer.

Parameters

cnt	Number of bytes to be advanced

Returns: Number of bytes that could be advanced in ring buffer

Definition at line 188 of file ringbuffer.cpp.

References atomic_read, atomic_sub, m_filled, m_pBuffer, m_pBufferEnd, and m_pReadPointer.

Referenced by cSoftHdAudio::CyclicCall(), and cSoftHdAudio::DropSamplesOlderThanPtsMs().

◆ Reset()

void cSoftHdRingbuffer::Reset ( void )

Reset ring buffer pointers.

Definition at line 69 of file ringbuffer.cpp.

References atomic_set, m_filled, m_pBuffer, m_pReadPointer, and m_pWritePointer.

Referenced by cSoftHdAudio::FlushBuffers().

◆ UsedBytes()

size_t cSoftHdRingbuffer::UsedBytes ( void )

Get used bytes in ring buffer.

Returns: Number of bytes used in buffer.

Definition at line 301 of file ringbuffer.cpp.

References atomic_read, and m_filled.

Referenced by cSoftHdAudio::DropSamplesOlderThanPtsMs(), cSoftHdAudio::GetOutputPtsMsInternal(), and cSoftHdAudio::GetUsedBytes().

◆ Write()

size_t cSoftHdRingbuffer::Write	(	const void *	buf,
		size_t	cnt
	)

Write to a ring buffer.

Parameters

buf	buffer of `cnt` bytes to be written
cnt	Number of bytes in buffer

Returns: The number of bytes that could be placed in the ring buffer

Definition at line 120 of file ringbuffer.cpp.

References atomic_add, atomic_read, m_filled, m_pBuffer, m_pBufferEnd, m_pWritePointer, and m_Size.

Referenced by cSoftHdAudio::Enqueue().

◆ WriteAdvance()

size_t cSoftHdRingbuffer::WriteAdvance ( size_t cnt )

Advance write pointer in ring buffer.

Parameters

cnt	Number of bytes to be adavanced

Returns: Number of bytes that could be advanced in ring buffer

Definition at line 83 of file ringbuffer.cpp.

References atomic_add, atomic_read, m_filled, m_pBuffer, m_pBufferEnd, m_pWritePointer, and m_Size.

Member Data Documentation

◆ m_filled

atomic_t cSoftHdRingbuffer::m_filled

private

how many of the buffer is used

Definition at line 57 of file ringbuffer.h.

Referenced by cSoftHdRingbuffer(), FreeBytes(), GetReadPointer(), GetWritePointer(), Read(), ReadAdvance(), Reset(), UsedBytes(), Write(), and WriteAdvance().

◆ m_pBuffer

char* cSoftHdRingbuffer::m_pBuffer

private

ring buffer data

Definition at line 50 of file ringbuffer.h.

Referenced by cSoftHdRingbuffer(), Read(), ReadAdvance(), Reset(), Write(), WriteAdvance(), and ~cSoftHdRingbuffer().

◆ m_pBufferEnd

const char* cSoftHdRingbuffer::m_pBufferEnd

private

end of buffer

Definition at line 51 of file ringbuffer.h.

Referenced by cSoftHdRingbuffer(), GetReadPointer(), GetWritePointer(), Read(), ReadAdvance(), Write(), and WriteAdvance().

◆ m_pReadPointer

const char* cSoftHdRingbuffer::m_pReadPointer

private

only used by reader

Definition at line 53 of file ringbuffer.h.

Referenced by cSoftHdRingbuffer(), GetReadPointer(), Read(), ReadAdvance(), and Reset().

◆ m_pWritePointer

char* cSoftHdRingbuffer::m_pWritePointer

private

only used by writer

Definition at line 54 of file ringbuffer.h.

Referenced by cSoftHdRingbuffer(), GetWritePointer(), Reset(), Write(), and WriteAdvance().

◆ m_Size

size_t cSoftHdRingbuffer::m_Size

private

bytes in buffer (for faster calc)

Definition at line 52 of file ringbuffer.h.

Referenced by cSoftHdRingbuffer(), FreeBytes(), GetWritePointer(), Write(), and WriteAdvance().

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