Dirac - A Video Codec

Created by the British Broadcasting Corporation.

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dirac_instr::Overlay Class Reference

Class managing instrumentation overlay.

#include <overlay.h>

Collaboration diagram for dirac_instr::Overlay:

[legend]List of all members.

Public Member Functions

• Overlay (const OverlayParams &, Frame &)

  constructor
  

• ~Overlay ()

  Destructor.
  

• void ProcessFrame (const MEData &, const OLBParams &)
• void ProcessFrame ()

Private Member Functions

• void DoOverlay (const MEData &)

  Manages overlay based on command-line option.
  

• void CalculateFactors (const ChromaFormat &)

  Calculates chroma sample factors.
  

• void PadFrame (const MEData &)

  Calculates if frame requires padding.
  

• void GlobalMotionDifference (const MEData &, MvArray &)

  Remove global motion from block motion.
  

Private Attributes

• int m_mv_scale

  Temporal scaling factor for motion vectors.
  

• int m_ref

  Local copy of reference offset.
  

• const OverlayParams m_oparams

  Overlay parameters.
  

• Frame & m_frame

  Local reference to frame.
  

• DrawFrameMotionParams m_draw_params

  Parameters for drawing frame overlays.
  

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Constructor & Destructor Documentation

dirac_instr::Overlay::Overlay	(	const OverlayParams &	,
		Frame &
	)

dirac_instr::Overlay::~Overlay

(

)

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Member Function Documentation

void dirac_instr::Overlay::ProcessFrame	(	const MEData &	,
		const OLBParams &
	)

void dirac_instr::Overlay::ProcessFrame

(

)

void dirac_instr::Overlay::DoOverlay

(

const MEData &

)

[private]

void dirac_instr::Overlay::CalculateFactors

(

const ChromaFormat &

)

[private]

void dirac_instr::Overlay::PadFrame

(

const MEData &

)

[private]

void dirac_instr::Overlay::GlobalMotionDifference	(	const MEData &	,
		MvArray &
	)			[private]

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Member Data Documentation

int dirac_instr::Overlay::m_mv_scale [private]

int dirac_instr::Overlay::m_ref [private]

const OverlayParams dirac_instr::Overlay::m_oparams [private]

Frame& dirac_instr::Overlay::m_frame [private]

DrawFrameMotionParams dirac_instr::Overlay::m_draw_params [private]

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

• overlay.h

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© 2004 British Broadcasting Corporation. Dirac code licensed under the Mozilla Public License (MPL) Version 1.1.
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