ac3enc_float.c File Reference

floating-point AC-3 encoder. More...

#include "internal.h"
#include "ac3enc.h"
#include "eac3enc.h"
#include "kbdwin.h"
#include "ac3enc_template.c"

Go to the source code of this file.

Macros
#define	CONFIG_AC3ENC_FLOAT   1

Functions
av_cold void	ff_ac3_float_mdct_end (AC3EncodeContext *s)
	Finalize MDCT and free allocated memory.
av_cold int	ff_ac3_float_mdct_init (AC3EncodeContext *s)
	Initialize MDCT tables.
static void	apply_window (void *dsp, float *output, const float *input, const float *window, unsigned int len)
static int	normalize_samples (AC3EncodeContext *s)
static void	scale_coefficients (AC3EncodeContext *s)
static void	sum_square_butterfly (AC3EncodeContext *s, float sum[4], const float *coef0, const float *coef1, int len)
static void	clip_coefficients (DSPContext *dsp, float *coef, unsigned int len)
static CoefType	calc_cpl_coord (CoefSumType energy_ch, CoefSumType energy_cpl)

Detailed Description

floating-point AC-3 encoder.

Definition in file ac3enc_float.c.

Macro Definition Documentation

#define CONFIG_AC3ENC_FLOAT   1

Definition at line 29 of file ac3enc_float.c.

Function Documentation

av_cold void ff_ac3_float_mdct_end

(

AC3EncodeContext *

s

)

Finalize MDCT and free allocated memory.

Parameters

s	AC-3 encoder private context

Definition at line 55 of file ac3enc_float.c.

Referenced by ff_ac3_encode_init().

av_cold int ff_ac3_float_mdct_init

(

AC3EncodeContext *

s

)

Initialize MDCT tables.

Parameters

s	AC-3 encoder private context

Returns

0 on success, negative error code on failure

Definition at line 68 of file ac3enc_float.c.

Referenced by ff_ac3_encode_init().

static void apply_window ( void *  dsp, float *  output, const float *  input, const float *  window, unsigned int  len  )

static

Definition at line 93 of file ac3enc_float.c.

static int normalize_samples ( AC3EncodeContext *  s )

static

Definition at line 106 of file ac3enc_float.c.

static void scale_coefficients ( AC3EncodeContext *  s )

static

Definition at line 115 of file ac3enc_float.c.

static void sum_square_butterfly ( AC3EncodeContext *  s, float  sum[4], const float *  coef0, const float *  coef1, int  len  )

static

Definition at line 124 of file ac3enc_float.c.

static void clip_coefficients ( DSPContext *  dsp, float *  coef, unsigned int  len  )

static

Definition at line 134 of file ac3enc_float.c.

static CoefType calc_cpl_coord ( CoefSumType  energy_ch, CoefSumType  energy_cpl  )

static

Definition at line 143 of file ac3enc_float.c.