81 lines
No EOL
1.6 KiB
C
81 lines
No EOL
1.6 KiB
C
#ifndef DRC_H
|
|
#define DRC_H
|
|
|
|
#include <stdint.h>
|
|
|
|
#define MAX_DRC_FILTER_CNT_SUPPORT 2
|
|
|
|
#define DRC_BAND_NUM (3)
|
|
|
|
enum
|
|
{
|
|
DRC_FREQ_NULL = -1,
|
|
DRC_FREQ_50HZ = 1,
|
|
DRC_FREQ_63HZ,
|
|
DRC_FREQ_79HZ,
|
|
DRC_FREQ_100HZ,
|
|
DRC_FREQ_125HZ,
|
|
DRC_FREQ_158HZ,
|
|
DRC_FREQ_199HZ,
|
|
DRC_FREQ_251HZ,
|
|
DRC_FREQ_316HZ,
|
|
DRC_FREQ_398HZ,
|
|
DRC_FREQ_501HZ,
|
|
DRC_FREQ_630HZ,
|
|
DRC_FREQ_794HZ,
|
|
DRC_FREQ_1000HZ,
|
|
DRC_FREQ_1258HZ,
|
|
DRC_FREQ_1584HZ,
|
|
DRC_FREQ_1995HZ,
|
|
DRC_FREQ_2511HZ,
|
|
DRC_FREQ_3162HZ,
|
|
DRC_FREQ_3981HZ,
|
|
DRC_FREQ_5011HZ,
|
|
DRC_FREQ_6309HZ,
|
|
DRC_FREQ_7943HZ,
|
|
DRC_FREQ_10000HZ,
|
|
DRC_FREQ_12589HZ,
|
|
DRC_FREQ_15848HZ,
|
|
DRC_FREQ_19952HZ,
|
|
};
|
|
|
|
struct DrcBandConfig
|
|
{
|
|
int threshold;
|
|
float makeup_gain;
|
|
int ratio; // set 1, bypass, reduce mips
|
|
int attack_time;
|
|
int release_time;
|
|
float scale_fact; // invalid
|
|
};
|
|
|
|
typedef struct
|
|
{
|
|
int knee;
|
|
int filter_type[MAX_DRC_FILTER_CNT_SUPPORT]; // filter type is choosen from DRC_FREQ_NULL~DRC_FREQ_19952HZ
|
|
int band_num;
|
|
int look_ahead_time;
|
|
struct DrcBandConfig band_settings[DRC_BAND_NUM];
|
|
} DrcConfig;
|
|
|
|
struct DrcState_;
|
|
|
|
typedef struct DrcState_ DrcState;
|
|
|
|
#ifdef __cplusplus
|
|
extern "C" {
|
|
#endif
|
|
|
|
DrcState *drc_create(int sample_rate, int frame_size, int sample_bit, int ch_num, const DrcConfig *config);
|
|
|
|
int32_t drc_destroy(DrcState *st);
|
|
|
|
int32_t drc_set_config(DrcState *st, const DrcConfig *config);
|
|
|
|
int32_t drc_process(DrcState *st, uint8_t *buf, uint32_t len);
|
|
|
|
#ifdef __cplusplus
|
|
}
|
|
#endif
|
|
|
|
#endif |