/*
 * basic.h
 *
 *  Created on: 2014-9-23
 *      Author: DELL
 */

#ifndef BASIC_H_
#define BASIC_H_

#include "config.h"

#define MAX_FRAME_NUM 16

uvoid fgain_init(void);

/*description: Get the max value of the audio data to the one frame.
 *@param1: the audio data buffer
 *@param2: the length of the data buffer.
 *return: none
 */
//float fpeak_data(const float* data,int n);

/*description: Gain process
 *@param1: the audio data buffer
 *@param2: the old gain, hold last gain value.
 *@param3: the target gain.
 *@param4: the length of the data buffer.
 *return: none
 */
uvoid fgain_proc(const ufloat* data_in, ufloat* data_out, ufloat* old_gain, ufloat* new_gain, uint32_t smpl);
/*description: Get max data of the data.
 *@param1: the data input
 *@param2: data length.
 *return: max data
 */

ufloat fpeak_data(const ufloat* data, uint32_t n);
ufloat crms(const ufloat* data_in, uint32_t data_len, ufloat* nframe_data, uint32_t frame_num);
/*description: Get N frame 's max level, unit db.
 *@param1: the audio data buffer
 *@param2: the samples of data
 *@param3: the recent sevaral frames max level.
 *@param4: the length of the nframe_db.
 *return: none
 */
ufloat alg_get_avg_value(const ufloat x, ufloat * frame_array, uint32_t number);
ufloat alg_get_min_value(const ufloat x, ufloat * frame_array, uint32_t number);
ufloat alg_get_max_value(const ufloat x, ufloat * frame_array, uint32_t number);
ufloat frames_max_data(const ufloat* data_in, uint32_t data_len, ufloat* nframe_data, uint32_t frame_num);
ufloat fgain_get_factor(ufloat gain);
#define GF(g) fgain_get_factor(g)

uvoid fgain_step(const ufloat* data_in, ufloat* data_out, ufloat* old_gain
	, const ufloat target_gain, const ufloat step, uint32_t smpl);

#endif /* BASIC_H_ */