90 lines
3.2 KiB
C
90 lines
3.2 KiB
C
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#ifndef SPECTRUM_FFT_API_H
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#define SPECTRUM_FFT_API_H
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#include "media/spectrum/SpectrumShow_api.h"
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#include "media/audio_stream.h"
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//该模块 mips 消耗5M
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//RAM 单声道时：4.4Kbyte
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//RAM 双声道时：5.4Kbyte
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typedef struct _spectrum_fft_open_parm {
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u32 sr; //采样率
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u32 channel: 4; //通道数
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u32 mode: 4; //模式，双声道起作用，0 计算的是第一声道的频谱值，
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//1计算的是第二声道频谱值，2为第一声道与第二声道相加除2的频谱值
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float attackFactor;//下降因子[0,1)
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float releaseFactor;//上升因子[0,1)
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} spectrum_fft_open_parm;
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typedef struct _spectrum_fft_hdl {
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void *work_buf;
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u32 run_en: 1;
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s16 *out_buf;
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u32 out_buf_size;
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u32 offset;
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spectrum_fft_open_parm parm;
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struct audio_stream_entry entry; // 音频流入口
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} spectrum_fft_hdl;
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/*----------------------------------------------------------------------------*/
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/**@brief 打开
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@param *_parm: 始化参数，详见结构体spectrum_fft_open_parm
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@return 句柄
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@note
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*/
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/*----------------------------------------------------------------------------*/
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spectrum_fft_hdl *audio_spectrum_fft_open(spectrum_fft_open_parm *parm);
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/*----------------------------------------------------------------------------*/
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/**@brief audio_spectrum_fft_close 关闭处理
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@param _hdl:句柄
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@return 0:成功 -1：失败
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@note
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*/
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/*----------------------------------------------------------------------------*/
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int audio_spectrum_fft_close(spectrum_fft_hdl *hdl);
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/*----------------------------------------------------------------------------*/
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/**@brief audio_spectrum_fft_run 同步处理,每次run都会把输入buf消耗完，才会往下走
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@param _hdl:句柄
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@param data:输入数据
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@param len:输入数据长度
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@return len
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@note 频谱计算处理，只获取输入的数据，不改变输入的数据
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*/
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/*----------------------------------------------------------------------------*/
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int audio_spectrum_fft_run(spectrum_fft_hdl *hdl, s16 *data, int len);
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/*----------------------------------------------------------------------------*/
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/**@brief audio_spectrum_fft_switch 运行过程做开关处理
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@param hdl:句柄
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@param en:0 关闭频响运算 1 打开频响运算 (通话模式，不支持频谱计算.通话模式已经使用fft， 需关闭频谱计算)
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@return
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@note
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*/
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/*----------------------------------------------------------------------------*/
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void audio_spectrum_fft_switch(spectrum_fft_hdl *hdl, u8 en);
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/*----------------------------------------------------------------------------*/
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/**@brief audio_spectrum_fft_get_num 获取频谱个数
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@param _hdl:句柄
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@return 返回频谱的个数
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@note
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*/
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/*----------------------------------------------------------------------------*/
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int audio_spectrum_fft_get_num(spectrum_fft_hdl *hdl);
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/*----------------------------------------------------------------------------*/
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/**@brief audio_spectrum_fft_get_val 获取频谱值
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@param _hdl:句柄
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@return 返回存储频谱值的地址
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@note
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*/
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/*----------------------------------------------------------------------------*/
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short *audio_spectrum_fft_get_val(spectrum_fft_hdl *hdl);
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#endif
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