analysis.h File Reference

#include "celt.h"
#include "opus_private.h"

Go to the source code of this file.

Classes
struct	TonalityAnalysisState

Macros
#define	NB_FRAMES   8
#define	NB_TBANDS   18
#define	NB_TOT_BANDS   21
#define	ANALYSIS_BUF_SIZE   720 /* 15 ms at 48 kHz */
#define	DETECT_SIZE   200
#define	TONALITY_ANALYSIS_RESET_START   angle

Functions
void	tonality_analysis_init (TonalityAnalysisState *analysis)
void	tonality_analysis_reset (TonalityAnalysisState *analysis)
void	tonality_get_info (TonalityAnalysisState *tonal, AnalysisInfo *info_out, int len)
void	run_analysis (TonalityAnalysisState *analysis, const CELTMode *celt_mode, const void *analysis_pcm, int analysis_frame_size, int frame_size, int c1, int c2, int C, opus_int32 Fs, int lsb_depth, downmix_func downmix, AnalysisInfo *analysis_info)

Macro Definition Documentation

ANALYSIS_BUF_SIZE

#define ANALYSIS_BUF_SIZE   720 /* 15 ms at 48 kHz */

DETECT_SIZE

#define DETECT_SIZE   200

NB_FRAMES

#define NB_FRAMES   8

NB_TBANDS

#define NB_TBANDS   18

NB_TOT_BANDS

#define NB_TOT_BANDS   21

TONALITY_ANALYSIS_RESET_START

#define TONALITY_ANALYSIS_RESET_START   angle

Function Documentation

run_analysis()

void run_analysis	(	TonalityAnalysisState *	analysis,
		const CELTMode *	celt_mode,
		const void *	analysis_pcm,
		int	analysis_frame_size,
		int	frame_size,
		int	c1,
		int	c2,
		int	C,
		opus_int32	Fs,
		int	lsb_depth,
		downmix_func	downmix,
		AnalysisInfo *	analysis_info
	)

tonality_analysis_init()

void tonality_analysis_init

(

TonalityAnalysisState *

analysis

)

Initialize a TonalityAnalysisState struct.

This performs some possibly slow initialization steps which should not be repeated every analysis step. No allocated memory is retained by the state struct, so no cleanup call is required.

tonality_analysis_reset()

void tonality_analysis_reset

(

TonalityAnalysisState *

analysis

)

Reset a TonalityAnalysisState stuct.

Call this when there's a discontinuity in the data.

tonality_get_info()

void tonality_get_info	(	TonalityAnalysisState *	tonal,
		AnalysisInfo *	info_out,
		int	len
	)