tx.c File Reference

#include "cpu.h"
#include "qsort.h"
#include "bprint.h"
#include "tx_priv.h"

Go to the source code of this file.

Data Structures
struct	TXCodeletMatch

Macros
#define	TYPE_IS(type, x)

Functions
static av_always_inline int	mulinv (int n, int m)
int	ff_tx_gen_compound_mapping (AVTXContext *s, int n, int m)
static int	split_radix_permutation (int i, int len, int inv)
int	ff_tx_gen_ptwo_revtab (AVTXContext *s, int invert_lookup)
int	ff_tx_gen_ptwo_inplace_revtab_idx (AVTXContext *s)
static void	parity_revtab_generator (int *revtab, int n, int inv, int offset, int is_dual, int dual_high, int len, int basis, int dual_stride, int inv_lookup)
int	ff_tx_gen_split_radix_parity_revtab (AVTXContext *s, int invert_lookup, int basis, int dual_stride)
static void	reset_ctx (AVTXContext *s)
av_cold void	av_tx_uninit (AVTXContext **ctx)
	Frees a context and sets *ctx to NULL, does nothing when *ctx == NULL. More...
static av_cold int	ff_tx_null_init (AVTXContext *s, const FFTXCodelet *cd, uint64_t flags, FFTXCodeletOptions *opts, int len, int inv, const void *scale)
static void	ff_tx_null (AVTXContext *s, void *_out, void *_in, ptrdiff_t stride)
static void	print_flags (AVBPrint *bp, uint64_t f)
static void	print_type (AVBPrint *bp, enum AVTXType type)
static void	print_cd_info (const FFTXCodelet *cd, int prio, int print_prio)
static void	print_tx_structure (AVTXContext *s, int depth)
static int	cmp_matches (TXCodeletMatch *a, TXCodeletMatch *b)
static int	check_cd_factors (const FFTXCodelet *cd, int len)
av_cold int	ff_tx_init_subtx (AVTXContext *s, enum AVTXType type, uint64_t flags, FFTXCodeletOptions *opts, int len, int inv, const void *scale)
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...

Variables
static const FFTXCodelet	ff_tx_null_def
static const FFTXCodelet *const	ff_tx_null_list []

Macro Definition Documentation

TYPE_IS

#define TYPE_IS	(		type,
			x
	)

Value:

    (((x) == AV_TX_FLOAT_ ## type)  || \
     ((x) == AV_TX_DOUBLE_ ## type) || \
     ((x) == AV_TX_INT32_ ## type))

Definition at line 25 of file tx.c.

Function Documentation

mulinv()

static av_always_inline int mulinv ( int  n, int  m  )

static

Definition at line 31 of file tx.c.

Referenced by ff_tx_gen_compound_mapping().

ff_tx_gen_compound_mapping()

int ff_tx_gen_compound_mapping	(	AVTXContext *	s,
		int	n,
		int	m
	)

Definition at line 42 of file tx.c.

Referenced by ff_tx_fft_pfa_init(), and ff_tx_mdct_pfa_init().

split_radix_permutation()

static int split_radix_permutation ( int  i, int  len, int  inv  )

inlinestatic

Definition at line 96 of file tx.c.

Referenced by ff_tx_gen_ptwo_revtab(), and parity_revtab_generator().

ff_tx_gen_ptwo_revtab()

int ff_tx_gen_ptwo_revtab	(	AVTXContext *	s,
		int	invert_lookup
	)

Definition at line 107 of file tx.c.

Referenced by ff_tx_fft_sr_codelet_init().

ff_tx_gen_ptwo_inplace_revtab_idx()

int ff_tx_gen_ptwo_inplace_revtab_idx

(

AVTXContext *

s

)

Definition at line 125 of file tx.c.

Referenced by ff_tx_fft_sr_init().

parity_revtab_generator()

static void parity_revtab_generator ( int *  revtab, int  n, int  inv, int  offset, int  is_dual, int  dual_high, int  len, int  basis, int  dual_stride, int  inv_lookup  )

static

Definition at line 167 of file tx.c.

Referenced by ff_tx_gen_split_radix_parity_revtab().

ff_tx_gen_split_radix_parity_revtab()

int ff_tx_gen_split_radix_parity_revtab	(	AVTXContext *	s,
		int	invert_lookup,
		int	basis,
		int	dual_stride
	)

Definition at line 210 of file tx.c.

reset_ctx()

static void reset_ctx ( AVTXContext *  s )

static

Definition at line 231 of file tx.c.

Referenced by av_tx_uninit(), and ff_tx_init_subtx().

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 251 of file tx.c.

Referenced by common_uninit(), config_output(), decode_close(), fir_to_phase(), free_tx_refs(), load_data(), qdmc_decode_close(), siren_close(), uninit(), uninit_segment(), yae_release_buffers(), and yae_reset().

ff_tx_null_init()

static av_cold int ff_tx_null_init ( AVTXContext *  s, const FFTXCodelet *  cd, uint64_t  flags, FFTXCodeletOptions *  opts, int  len, int  inv, const void *  scale  )

static

Definition at line 260 of file tx.c.

ff_tx_null()

static void ff_tx_null ( AVTXContext *  s, void *  _out, void *  _in, ptrdiff_t  stride  )

static

Definition at line 271 of file tx.c.

print_flags()

static void print_flags ( AVBPrint *  bp, uint64_t  f  )

static

Definition at line 296 of file tx.c.

Referenced by ff_tx_init_subtx(), and print_cd_info().

print_type()

static void print_type ( AVBPrint *  bp, enum AVTXType  type  )

static

Definition at line 320 of file tx.c.

Referenced by ff_tx_init_subtx(), and print_cd_info().

print_cd_info()

static void print_cd_info ( const FFTXCodelet *  cd, int  prio, int  print_prio  )

static

Definition at line 336 of file tx.c.

Referenced by ff_tx_init_subtx(), and print_tx_structure().

print_tx_structure()

static void print_tx_structure ( AVTXContext *  s, int  depth  )

static

Definition at line 375 of file tx.c.

Referenced by av_tx_init().

cmp_matches()

static int cmp_matches ( TXCodeletMatch *  a, TXCodeletMatch *  b  )

static

Definition at line 394 of file tx.c.

Referenced by ff_tx_init_subtx().

check_cd_factors()

static int check_cd_factors ( const FFTXCodelet *  cd, int  len  )

inlinestatic

Definition at line 400 of file tx.c.

Referenced by ff_tx_init_subtx().

ff_tx_init_subtx()

av_cold int ff_tx_init_subtx	(	AVTXContext *	s,
		enum AVTXType	type,
		uint64_t	flags,
		FFTXCodeletOptions *	opts,
		int	len,
		int	inv,
		const void *	scale
	)

Definition at line 440 of file tx.c.

Referenced by av_tx_init(), ff_tx_fft_pfa_init(), ff_tx_fft_sr_init(), ff_tx_mdct_inv_full_init(), ff_tx_mdct_pfa_init(), ff_tx_mdct_sr_init(), and ff_tx_rdft_init().

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 649 of file tx.c.

Referenced by config_input(), config_output(), config_props(), convert_coeffs(), decode_init(), equ_init(), fir_to_phase(), init_segment(), load_data(), qdmc_decode_init(), siren_init(), and yae_reset().

Variable Documentation

ff_tx_null_def

const FFTXCodelet ff_tx_null_def

static

Initial value:

= {
    .name       = NULL_IF_CONFIG_SMALL("null"),
    .function   = ff_tx_null,
    .type       = TX_TYPE_ANY,
    .flags      = AV_TX_UNALIGNED | FF_TX_ALIGNED |
                  FF_TX_OUT_OF_PLACE | AV_TX_INPLACE,
    .factors[0] = TX_FACTOR_ANY,
    .min_len    = 1,
    .max_len    = 1,
    .init       = ff_tx_null_init,
    .cpu_flags  = FF_TX_CPU_FLAGS_ALL,
    .prio       = FF_TX_PRIO_MAX,
}

Definition at line 276 of file tx.c.

ff_tx_null_list

const FFTXCodelet* const ff_tx_null_list[]

static

Initial value:

= {
    &ff_tx_null_def,
    NULL,
}

Definition at line 290 of file tx.c.

Referenced by ff_tx_init_subtx().