69 lines
2.6 KiB
C
69 lines
2.6 KiB
C
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#ifndef _AUDIO_LOUDNESS_API_H_
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#define _AUDIO_LOUDNESS_API_H_
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#include "system/includes.h"
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#include "media/includes.h"
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#include "equalloudness/loudness_api.h"
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typedef struct _equalloudness_open_parm {
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u16 sr; //采样率
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u8 channel; //通道数
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u8 threadhold_vol; //触发等响度软件数字音量阈值
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int (*alpha_cb)(float *alpha, u8 *volume, u8 threadhold_vol);//该函数根据，系统软件的数字音量,参数返回 alpha值
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} equalloudness_open_parm;
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typedef struct _equalloudness_update_parm {
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u8 threadhold_vol; //触发等响度软件数字音量阈值
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} equalloudness_update_parm;
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typedef struct _equalloudness_hdl {
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void *work_buf; //软件等响度 运行句柄及buf
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OS_MUTEX mutex; //互斥锁
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/*输出的偏移*/
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u32 out_buf_size; //输出buf大小
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s16 *out_buf; //输出buf地址
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u32 out_points; //当前已输出的点数
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u32 out_total; //输出buf总点数
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void *buf; //输入buf
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cbuffer_t cbuf; //软件等响度，每次处理固定长度的数据，此处使用cbuf管理输入
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u8 init_ok: 1; //是否初始化完成
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u8 prev_vol; //记录当前数据流入的数字音量
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equalloudness_open_parm o_parm; //打开时，传入参数
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struct audio_stream_entry entry; // 音频流入口
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} equal_loudness_hdl;
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/*----------------------------------------------------------------------------*/
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/**@brief audio_equal_loudness_open, 等响度 打开
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@param *_parm: 等响度初始化参数，详见结构体equalloudness_open_parm
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@return 等响度句柄
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@note
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*/
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/*----------------------------------------------------------------------------*/
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equal_loudness_hdl *audio_equal_loudness_open(equalloudness_open_parm *_parm);
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/*----------------------------------------------------------------------------*/
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/**@brief audio_equal_loudness_parm_update 等响度 参数更新
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@param cmd:命令
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@param *_parm:参数指针
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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_equal_loudness_parm_update(equal_loudness_hdl *_hdl, u32 cmd, equalloudness_update_parm *_parm);
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/*----------------------------------------------------------------------------*/
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/**@brief audio_equal_loudness_close 等响度关闭处理
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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_equal_loudness_close(equal_loudness_hdl *_hdl);
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#endif
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