dcaadpcm.c File Reference

#include "dcaadpcm.h"
#include "dcaenc.h"
#include "dca_core.h"
#include "mathops.h"

Go to the source code of this file.

Typedefs
typedef int32_t	premultiplied_coeffs[10]

Functions
static int64_t	calc_corr (const int32_t *x, int len, int j, int k)
static int64_t	apply_filter (const int16_t a[DCA_ADPCM_COEFFS], const int64_t corr[15], const int32_t aa[10])
static int64_t	find_best_filter (const DCAADPCMEncContext *s, const int32_t *in, int len)
static int64_t	calc_prediction_gain (int pred_vq, const int32_t *in, int32_t *out, int len)
int	ff_dcaadpcm_subband_analysis (const DCAADPCMEncContext *s, const int32_t *in, int len, int *diff)
static void	precalc (premultiplied_coeffs *data)
int	ff_dcaadpcm_do_real (int pred_vq_index, softfloat quant, int32_t scale_factor, int32_t step_size, const int32_t *prev_hist, const int32_t *in, int32_t *next_hist, int32_t *out, int len, int32_t peak)
av_cold int	ff_dcaadpcm_init (DCAADPCMEncContext *s)
av_cold void	ff_dcaadpcm_free (DCAADPCMEncContext *s)

Typedef Documentation

premultiplied_coeffs

typedef int32_t premultiplied_coeffs[10]

Definition at line 28 of file dcaadpcm.c.

Function Documentation

calc_corr()

static int64_t calc_corr ( const int32_t *  x, int  len, int  j, int  k  )

inlinestatic

Definition at line 31 of file dcaadpcm.c.

Referenced by find_best_filter().

apply_filter()

static int64_t apply_filter ( const int16_t  a[DCA_ADPCM_COEFFS], const int64_t  corr[15], const int32_t  aa[10]  )

inlinestatic

Definition at line 40 of file dcaadpcm.c.

Referenced by find_best_filter().

find_best_filter()

static int64_t find_best_filter ( const DCAADPCMEncContext *  s, const int32_t *  in, int  len  )

static

Definition at line 79 of file dcaadpcm.c.

Referenced by ff_dcaadpcm_subband_analysis().

calc_prediction_gain()

static int64_t calc_prediction_gain ( int  pred_vq, const int32_t *  in, int32_t *  out, int  len  )

inlinestatic

Definition at line 104 of file dcaadpcm.c.

Referenced by ff_dcaadpcm_subband_analysis().

ff_dcaadpcm_subband_analysis()

int ff_dcaadpcm_subband_analysis	(	const DCAADPCMEncContext *	s,
		const int32_t *	in,
		int	len,
		int *	diff
	)

Definition at line 125 of file dcaadpcm.c.

Referenced by adpcm_analysis(), and ff_dcaadpcm_predict().

precalc()

static void precalc ( premultiplied_coeffs *  data )

static

Definition at line 164 of file dcaadpcm.c.

Referenced by ff_dcaadpcm_init().

ff_dcaadpcm_do_real()

int ff_dcaadpcm_do_real	(	int	pred_vq_index,
		softfloat	quant,
		int32_t	scale_factor,
		int32_t	step_size,
		const int32_t *	prev_hist,
		const int32_t *	in,
		int32_t *	next_hist,
		int32_t *	out,
		int	len,
		int32_t	peak
	)

Definition at line 183 of file dcaadpcm.c.

Referenced by ff_dcaadpcm_predict(), and quantize_adpcm_subband().

ff_dcaadpcm_init()

av_cold int ff_dcaadpcm_init

(

DCAADPCMEncContext *

s

)

Definition at line 212 of file dcaadpcm.c.

Referenced by encode_init(), and ff_dcaadpcm_predict().

ff_dcaadpcm_free()

av_cold void ff_dcaadpcm_free

(

DCAADPCMEncContext *

s

)

Definition at line 225 of file dcaadpcm.c.

Referenced by encode_close(), and ff_dcaadpcm_predict().