q_offsets.h File Reference

Headerfile for q_offsets array. More...

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Functions
void	Init_QOffsetMatrix (ImageParameters *p_Img, InputParameters *p_Inp)
void	CalculateOffset4x4Param (ImageParameters *p_Img, InputParameters *p_Inp)
void	CalculateOffset8x8Param (ImageParameters *p_Img, InputParameters *p_Inp)
void	free_QOffsets (QuantParameters *p_Quant, InputParameters *p_Inp)
Variables
static const int	OffsetBits = 11

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Detailed Description

Headerfile for q_offsets array.

q_offsets.h

Date:

18. Nov 2004

Definition in file q_offsets.h.

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Function Documentation

void CalculateOffset4x4Param	(	ImageParameters *	p_Img,
		InputParameters *	p_Inp
	)

Calculation of the quantization offset parameters at the frame level.

Input:

none

Output:

none

Definition at line 497 of file q_offsets.c.

References inp_par_enc::AdaptRndCrWFactor, inp_par_enc::AdaptRndWFactor, and inp_par_enc::AdaptRoundingFixed.

Referenced by code_a_plane(), encode_one_slice(), and encode_one_slice_MBAFF().

void CalculateOffset8x8Param	(	ImageParameters *	p_Img,
		InputParameters *	p_Inp
	)

Calculate the quantisation offset parameters.

Definition at line 581 of file q_offsets.c.

References inp_par_enc::AdaptRoundingFixed.

Referenced by code_a_plane(), encode_one_slice(), and encode_one_slice_MBAFF().

void free_QOffsets	(	QuantParameters *	p_Quant,
		InputParameters *	p_Inp
	)

Free Q matrix arrays.

Definition at line 196 of file q_offsets.c.

References inp_par_enc::AdaptRoundingFixed, free_mem2Dshort(), and free_mem3Dshort().

Referenced by free_global_buffers().

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void Init_QOffsetMatrix	(	ImageParameters *	p_Img,
		InputParameters *	p_Inp
	)

Initialise Q offset matrix values.

Now set up all offset p_Inp. This process could be reused if we wish to re-init offsets

Definition at line 394 of file q_offsets.c.

References allocate_QOffsets(), errortext, GetConfigFileContent(), InitOffsetParam(), inp_par_enc::OffsetMatrixPresentFlag, ParseQOffsetMatrix(), and inp_par_enc::QOffsetMatrixFile.

Referenced by init_encoder().

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