fmo.c File Reference

Support for Flexible Macroblock Ordering (FMO). More...

#include "global.h"
#include "elements.h"
#include "defines.h"
#include "header.h"
#include "fmo.h"

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Go to the source code of this file.

Functions
static void	FmoGenerateType0MapUnitMap (pic_parameter_set_rbsp_t *pps, seq_parameter_set_rbsp_t *sps, unsigned PicSizeInMapUnits)
static void	FmoGenerateType1MapUnitMap (pic_parameter_set_rbsp_t *pps, seq_parameter_set_rbsp_t *sps, unsigned PicSizeInMapUnits)
static void	FmoGenerateType2MapUnitMap (pic_parameter_set_rbsp_t *pps, seq_parameter_set_rbsp_t *sps, unsigned PicSizeInMapUnits)
static void	FmoGenerateType3MapUnitMap (pic_parameter_set_rbsp_t *pps, seq_parameter_set_rbsp_t *sps, unsigned PicSizeInMapUnits)
static void	FmoGenerateType4MapUnitMap (pic_parameter_set_rbsp_t *pps, seq_parameter_set_rbsp_t *sps, unsigned PicSizeInMapUnits)
static void	FmoGenerateType5MapUnitMap (pic_parameter_set_rbsp_t *pps, seq_parameter_set_rbsp_t *sps, unsigned PicSizeInMapUnits)
static void	FmoGenerateType6MapUnitMap (pic_parameter_set_rbsp_t *pps, seq_parameter_set_rbsp_t *sps, unsigned PicSizeInMapUnits)
static int	FmoGenerateMapUnitToSliceGroupMap (pic_parameter_set_rbsp_t *pps, seq_parameter_set_rbsp_t *sps)
static int	FmoGenerateMbToSliceGroupMap (pic_parameter_set_rbsp_t *pps, seq_parameter_set_rbsp_t *sps)
int	FmoInit (pic_parameter_set_rbsp_t *pps, seq_parameter_set_rbsp_t *sps)
int	FmoFinit ()
int	FmoGetNumberOfSliceGroup ()
int	FmoGetLastMBOfPicture ()
int	FmoGetLastMBInSliceGroup (int SliceGroup)
int	FmoGetSliceGroupId (int mb)
int	FmoGetNextMBNr (int CurrentMbNr)
Variables
int *	MbToSliceGroupMap = NULL
int *	MapUnitToSliceGroupMap = NULL
static int	NumberOfSliceGroups

---

Detailed Description

Support for Flexible Macroblock Ordering (FMO).

Author:

Main contributors (see contributors.h for copyright, address and affiliation details)

• Stephan Wenger stewe@cs.tu-berlin.de
• Karsten Suehring suehring@hhi.de

Definition in file fmo.c.

---

Function Documentation

int FmoFinit

(

void

)

Free memory allocated by FMO functions.

Definition at line 224 of file fmo.c.

Referenced by main().

static int FmoGenerateMapUnitToSliceGroupMap	(	pic_parameter_set_rbsp_t *	pps,
		seq_parameter_set_rbsp_t *	sps
	)			[static]

Generates MapUnitToSliceGroupMap Has to be called every time a new Picture Parameter Set is used.

Parameters:

	pps	Picture Parameter set to be used for map generation
	sps	Sequence Parameter set to be used for map generation

Definition at line 52 of file fmo.c.

References error(), FmoGenerateType0MapUnitMap(), FmoGenerateType1MapUnitMap(), FmoGenerateType2MapUnitMap(), FmoGenerateType3MapUnitMap(), FmoGenerateType4MapUnitMap(), FmoGenerateType5MapUnitMap(), and FmoGenerateType6MapUnitMap().

Referenced by FmoInit().

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static int FmoGenerateMbToSliceGroupMap	(	pic_parameter_set_rbsp_t *	pps,
		seq_parameter_set_rbsp_t *	sps
	)			[static]

Generates MbToSliceGroupMap from MapUnitToSliceGroupMap.

Parameters:

	pps	Picture Parameter set to be used for map generation
	sps	Sequence Parameter set to be used for map generation

Definition at line 124 of file fmo.c.

References img.

Referenced by FmoInit().

static void FmoGenerateType0MapUnitMap	(	pic_parameter_set_rbsp_t *	pps,
		seq_parameter_set_rbsp_t *	sps,
		unsigned	PicSizeInMapUnits
	)			[static]

Generate interleaved slice group map type MapUnit map (type 0).

Definition at line 343 of file fmo.c.

Referenced by FmoGenerateMapUnitToSliceGroupMap().

static void FmoGenerateType1MapUnitMap	(	pic_parameter_set_rbsp_t *	pps,
		seq_parameter_set_rbsp_t *	sps,
		unsigned	PicSizeInMapUnits
	)			[static]

Generate dispersed slice group map type MapUnit map (type 1).

Definition at line 368 of file fmo.c.

References img.

Referenced by FmoGenerateMapUnitToSliceGroupMap().

static void FmoGenerateType2MapUnitMap	(	pic_parameter_set_rbsp_t *	pps,
		seq_parameter_set_rbsp_t *	sps,
		unsigned	PicSizeInMapUnits
	)			[static]

Generate foreground with left-over slice group map type MapUnit map (type 2).

Definition at line 385 of file fmo.c.

References img.

Referenced by FmoGenerateMapUnitToSliceGroupMap().

static void FmoGenerateType3MapUnitMap	(	pic_parameter_set_rbsp_t *	pps,
		seq_parameter_set_rbsp_t *	sps,
		unsigned	PicSizeInMapUnits
	)			[static]

Generate box-out slice group map type MapUnit map (type 3).

Definition at line 414 of file fmo.c.

References img.

Referenced by FmoGenerateMapUnitToSliceGroupMap().

static void FmoGenerateType4MapUnitMap	(	pic_parameter_set_rbsp_t *	pps,
		seq_parameter_set_rbsp_t *	sps,
		unsigned	PicSizeInMapUnits
	)			[static]

Generate raster scan slice group map type MapUnit map (type 4).

Definition at line 490 of file fmo.c.

References img.

Referenced by FmoGenerateMapUnitToSliceGroupMap().

static void FmoGenerateType5MapUnitMap	(	pic_parameter_set_rbsp_t *	pps,
		seq_parameter_set_rbsp_t *	sps,
		unsigned	PicSizeInMapUnits
	)			[static]

Generate wipe slice group map type MapUnit map (type 5).

Definition at line 513 of file fmo.c.

References img.

Referenced by FmoGenerateMapUnitToSliceGroupMap().

static void FmoGenerateType6MapUnitMap	(	pic_parameter_set_rbsp_t *	pps,
		seq_parameter_set_rbsp_t *	sps,
		unsigned	PicSizeInMapUnits
	)			[static]

Generate explicit slice group map type MapUnit map (type 6).

Definition at line 537 of file fmo.c.

Referenced by FmoGenerateMapUnitToSliceGroupMap().

int FmoGetLastMBInSliceGroup

(

int

SliceGroup

)

FmoGetLastMBInSliceGroup: Returns MB number of last MB in SG.

Input:

SliceGroupID (0 to 7)

Definition at line 283 of file fmo.c.

References FmoGetSliceGroupId(), and img.

Referenced by FmoGetLastMBOfPicture().

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int FmoGetLastMBOfPicture

(

void

)

FmoGetLastMBOfPicture() returns the macroblock number of the last MB in a picture. This mb happens to be the last macroblock of the picture if there is only one slice group.

Input:

None

Definition at line 267 of file fmo.c.

References FmoGetLastMBInSliceGroup(), and FmoGetNumberOfSliceGroup().

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int FmoGetNextMBNr

(

int

CurrentMbNr

)

FmoGetNextMBBr: Returns the MB-Nr (in scan order) of the next MB in the (scattered) Slice, -1 if the slice is finished.

Parameters:

CurrentMbNr

number of the current macroblock

Definition at line 322 of file fmo.c.

References FmoGetSliceGroupId(), and img.

Referenced by exit_macroblock().

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int FmoGetNumberOfSliceGroup

(

void

)

FmoGetNumberOfSliceGroup().

Input:

None

Definition at line 249 of file fmo.c.

Referenced by FmoGetLastMBOfPicture().

int FmoGetSliceGroupId

(

int

mb

)

Returns SliceGroupID for a given MB.

Parameters:

mb

Macroblock number (in scan order)

Definition at line 304 of file fmo.c.

References img.

Referenced by FmoGetLastMBInSliceGroup(), and FmoGetNextMBNr().

int FmoInit	(	pic_parameter_set_rbsp_t *	pps,
		seq_parameter_set_rbsp_t *	sps
	)

FMO initialization: Generates MapUnitToSliceGroupMap and MbToSliceGroupMap.

Parameters:

	pps	Picture Parameter set to be used for map generation
	sps	Sequence Parameter set to be used for map generation

Definition at line 176 of file fmo.c.

References FmoGenerateMapUnitToSliceGroupMap(), FmoGenerateMbToSliceGroupMap(), and img.

Referenced by read_new_slice().

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