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include_lib/media/howling_api.h

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+#ifndef HOWLING_API_H
+#define HOWLING_API_H
+
+#include "media/howling_pitchshifter_api.h"
+// #include "shiftPhase_api.h"
+#include "media/pemafrow_api.h"
+#include "media/audio_stream.h"
+
+typedef struct s_howling_para {
+    float notch_Q;//陷波器 Q值
+    float notch_gain;//陷波器gain值
+    int fade_time; //fade time
+    float threshold;  //初始化阈值
+    // int depth;  //陷波器深度
+    // int bandwidth;//陷波器带宽
+    int sample_rate;
+    int channel;
+    // float mode;//陷波器是否降采样
+} HOWLING_PARM_SET;
+
+//啸叫抑制 NotchHowling:
+typedef struct _NotchHowlingParam {
+    float Q;    	//Q值
+    float gain;		//增益
+    int fade_n;		//启动释放时间
+    float threshold;
+} NotchHowlingParam;
+
+
+
+typedef struct _HOWLING_API_STRUCT_ {
+    HOWLING_PARM_SET 	parm;  //陷波参数
+    void				*ptr;    //运算buf指针
+    HOWLING_PITCHSHIFT_PARM 	parm_2;  //移频参数
+    HOWLING_PITCHSHIFT_FUNC_API *func_api;           //移频函数指针
+    struct audio_stream_entry entry;	// 音频流入口
+    s16 *pre_buf;
+    u32 sample_rate;
+    u8 run_en;
+    u8 mode;
+    u8 update;
+} HOWLING_API_STRUCT;
+
+// int get_howling_buf(void);
+// void howling_init(void *workbuf, int threshold, int depth, int bandwidth, int attackTime, int releaseTime, int Noise_threshold, int low_th_gain, int sampleRate, int channel);
+// int howling_run(void *workbuf, short *in, short *out, int len);
+int get_howling_buf(int sampleRate);
+// void howling_init(void *workbuf, int fade_n,float notch_gain,float notch_Q, int mode,  int sampleRate);
+// void howling_init(void *workbuf, int fade_time, float notch_gain, float notch_Q,  int sampleRate);
+void howling_init(void *workbuf, int fade_time, float notch_gain, float notch_Q, float threshold, int sampleRate);
+// void howling_run(void *workbuf, short *in, short *out, int len);
+int howling_run(void *workbuf, short *in, short *out, int len);
+
+void SetHowlingDetection(void *workbuf, int OnlyDetection);
+float *getHowlingFreq(void *workbuf, int *num);
+
+#endif