tx.c File Reference

#include "tx_priv.h"

Go to the source code of this file.

Functions
int	ff_tx_type_is_mdct (enum AVTXType type)
static av_always_inline int	mulinv (int n, int m)
int	ff_tx_gen_compound_mapping (AVTXContext *s)
int	ff_tx_gen_ptwo_revtab (AVTXContext *s, int invert_lookup)
int	ff_tx_gen_ptwo_inplace_revtab_idx (AVTXContext *s)
av_cold void	av_tx_uninit (AVTXContext **ctx)
	Frees a context and sets ctx to NULL, does nothing when ctx == NULL. More...
av_cold int	av_tx_init (AVTXContext **ctx, av_tx_fn *tx, enum AVTXType type, int inv, int len, const void *scale, uint64_t flags)
	Initialize a transform context with the given configuration (i)MDCTs with an odd length are currently not supported. More...

Function Documentation

ff_tx_type_is_mdct()

int ff_tx_type_is_mdct

(

enum AVTXType

type

)

Definition at line 21 of file tx.c.

Referenced by ff_tx_gen_compound_mapping(), and ff_tx_init_mdct_fft().

mulinv()

static av_always_inline int mulinv ( int  n, int  m  )

static

Definition at line 34 of file tx.c.

Referenced by ff_tx_gen_compound_mapping().

ff_tx_gen_compound_mapping()

int ff_tx_gen_compound_mapping

(

AVTXContext *

s

)

Definition at line 44 of file tx.c.

Referenced by ff_tx_init_mdct_fft().

ff_tx_gen_ptwo_revtab()

int ff_tx_gen_ptwo_revtab	(	AVTXContext *	s,
		int	invert_lookup
	)

Definition at line 94 of file tx.c.

Referenced by ff_tx_init_mdct_fft().

ff_tx_gen_ptwo_inplace_revtab_idx()

int ff_tx_gen_ptwo_inplace_revtab_idx

(

AVTXContext *

s

)

Definition at line 113 of file tx.c.

Referenced by ff_tx_init_mdct_fft().

av_tx_uninit()

av_cold void av_tx_uninit

(

AVTXContext **

ctx

)

Frees a context and sets ctx to NULL, does nothing when ctx == NULL.

Definition at line 146 of file tx.c.

Referenced by av_tx_init(), decode_close(), siren_close(), and uninit().

av_tx_init()

av_cold int av_tx_init	(	AVTXContext **	ctx,
		av_tx_fn *	tx,
		enum AVTXType	type,
		int	inv,
		int	len,
		const void *	scale,
		uint64_t	flags
	)

Initialize a transform context with the given configuration (i)MDCTs with an odd length are currently not supported.

Parameters

ctx	the context to allocate, will be NULL on error
tx	pointer to the transform function pointer to set
type	type the type of transform
inv	whether to do an inverse or a forward transform
len	the size of the transform in samples
scale	pointer to the value to scale the output if supported by type
flags	a bitmask of AVTXFlags or 0

Returns

0 on success, negative error code on failure

Definition at line 160 of file tx.c.

Referenced by config_input(), config_output(), decode_init(), and siren_init().