vdecmpeg4::M4Decoder Class Reference

#include <M4Decoder.h>

Public Member Functions
VIDError	init (const VIDDecoderSetup *setup)
	Initialize decoder.
VIDError	initBuffers (int16 width, int16 height)
	Init decoder for indicated image res.
VIDError	StreamSet (VIDStreamIO *pStream, VIDStreamEvents *pEvents)
	"Pull" interface
VIDError	StreamDecode (float time, const VIDImage **result)
	Handle Stream.

Static Public Member Functions
static M4Decoder *	create (M4MemHandler &memHandler)
	Static creation.
static void	destroy (M4Decoder *&pDecoder, M4MemHandler &memHandler)
	Static destruction.

"Push" interface
class	M4MotionVectorMgr
	'Everyone needs some friends'
class	M4Image
class	M4XCmdSingleThread
	Install memory handling code.
static const int32	mDequantTable [4] = { -1, -2, 1, 2 }
static const uint32	mRoundtab [16] = { 0, 0, 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 2, 2 }
static const uint8	mIntraMacroBlocks [8] = { 0, 0, 0, 1, 1, 0, 0, 0 }
M4MemHandler	mMemSys
	local copy of memory hooks
void(*	mCbPrintf )(const char *pMessage)
VIDError	StreamEventsSet (VIDStreamEvents *pEvents)
	Attach a new event interface.
VIDError	StreamSeekNotify ()
	Do some reset stuff if seeking happens.
void *	operator new (size_t sz, M4MemHandler &memSys)
void	operator delete (void *ptr)
void	VIDPrintf (const char *pFormat,...)

Detailed Description

Main decoder interface

Note: This class is not designed for inheritance.

Member Function Documentation

create()

M4Decoder * vdecmpeg4::M4Decoder::create ( M4MemHandler &  memHandler )

static

Static creation.

Static creation

Parameters

memHandler

Returns

destroy()

void vdecmpeg4::M4Decoder::destroy ( M4Decoder *&  pDecoder, M4MemHandler &  memHandler  )

static

Static destruction.

Static destruction

Parameters

pDecoder
memHandler

init()

VIDError vdecmpeg4::M4Decoder::init

(

const VIDDecoderSetup *

setup

)

Initialize decoder.

Handle init code executed just once

Parameters

setup

width/height in setup struct can be 0

Returns

none

initBuffers()

VIDError vdecmpeg4::M4Decoder::initBuffers	(	int16	width,
		int16	height
	)

Init decoder for indicated image res.

Handle buffer allocation of frame size changes

Parameters

width	new width
height	new height

Returns

VIDError code

operator delete()

void vdecmpeg4::M4Decoder::operator delete ( void *  ptr )

inline

operator new()

void * vdecmpeg4::M4Decoder::operator new ( size_t  sz, M4MemHandler &  memSys  )

inline

StreamDecode()

VIDError vdecmpeg4::M4Decoder::StreamDecode	(	float	time,
		const VIDImage **	result
	)

Handle Stream.

Handle decoding via stream interface

Parameters

result

Returns

VIDError code

StreamEventsSet()

VIDError vdecmpeg4::M4Decoder::StreamEventsSet ( VIDStreamEvents *  pEvents )

inline

Attach a new event interface.

StreamSeekNotify()

VIDError vdecmpeg4::M4Decoder::StreamSeekNotify

(

)

Do some reset stuff if seeking happens.

Do some stuff if seeking happens.

WARNING: Need to revise interface if seeking to some arbitraty position

Returns

StreamSet()

VIDError vdecmpeg4::M4Decoder::StreamSet	(	VIDStreamIO *	pStreamIO,
		VIDStreamEvents *	pEvents
	)

"Pull" interface

Attach a new stream interface

Attach stream to decoder.

Ownership is not transferred

Parameters

pStreamIO
pEvents

Returns

VIDError code

VIDPrintf()

void vdecmpeg4::M4Decoder::VIDPrintf	(	const char *	pFormat,
			...
	)

Friends And Related Symbol Documentation

M4Image

friend class M4Image

friend

M4MotionVectorMgr

friend class M4MotionVectorMgr

friend

'Everyone needs some friends'

M4XCmdSingleThread

friend class M4XCmdSingleThread

friend

Install memory handling code.

Required stuff for debugging BMP output

Member Data Documentation

mCbPrintf

void(* vdecmpeg4::M4Decoder::mCbPrintf) (const char *pMessage)

mDequantTable

const int32 vdecmpeg4::M4Decoder::mDequantTable = { -1, -2, 1, 2 }

static

mIntraMacroBlocks

const uint8 vdecmpeg4::M4Decoder::mIntraMacroBlocks = { 0, 0, 0, 1, 1, 0, 0, 0 }

static

mMemSys

M4MemHandler vdecmpeg4::M4Decoder::mMemSys

local copy of memory hooks

mRoundtab

const uint32 vdecmpeg4::M4Decoder::mRoundtab = { 0, 0, 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 2, 2 }

static

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

• Engine/Source/Runtime/AVEncoder/Private/Decoders/vdecmpeg4/M4Decoder.h
• Engine/Source/Runtime/AVEncoder/Private/Decoders/vdecmpeg4/M4Decoder.cpp