libavcodec/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.

Defines
#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 (DSPContext *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)

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Detailed Description

floating-point AC-3 encoder.

Definition in file ac3enc_float.c.

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Define Documentation

#define CONFIG_AC3ENC_FLOAT   1

Definition at line 29 of file ac3enc_float.c.

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Function Documentation

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

Definition at line 89 of file ac3enc_float.c.

static CoefType calc_cpl_coord	(	CoefSumType	energy_ch,
		CoefSumType	energy_cpl
	)			[static]

Definition at line 137 of file ac3enc_float.c.

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

Definition at line 128 of file ac3enc_float.c.

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 51 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 64 of file ac3enc_float.c.

Referenced by ff_ac3_encode_init().

static int normalize_samples

(

AC3EncodeContext *

s

)

[static]

Definition at line 100 of file ac3enc_float.c.

static void scale_coefficients

(

AC3EncodeContext *

s

)

[static]

Definition at line 109 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 118 of file ac3enc_float.c.