109 lines
2.8 KiB
C
109 lines
2.8 KiB
C
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#ifndef SPECTRUM_API_H
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#define SPECTRUM_API_H
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#include "media/spectrum/coeff_calculate_api.h"
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#include "media/spectrum/rms_api.h"
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#include "application/audio_eq.h"
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#include "media/audio_stream.h"
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typedef struct _spectrum_open_parm {
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u32 sr;
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u32 channel: 4;
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u32 section: 6;
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u32 rms_en: 1;
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u32 time_ms: 4;
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u32 d_time: 16; //50ms~500ms
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float alpha;//(0~1)
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float attackFactor;
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float releaseFactor;
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int *freq_center;
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int *quality_factor;
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void *priv;
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int (*output)(void *priv, float *db, u32 len);//user define
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} spectrum_open_parm;
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typedef struct _spectrum_hdl {
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void *rms_hdl;//算db值
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int *coeff; //存放系数的地址
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struct audio_eq *eq[10];
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u32 data_len;
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s16 *data;//输出数据地址
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spectrum_open_parm parm;
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struct audio_stream_entry entry; // 音频流入口
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} spectrum_hdl;
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spectrum_hdl *audio_spectrum_open(spectrum_open_parm *parm);
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int audio_spectrum_close(spectrum_hdl *hdl);
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#if 0
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//例子
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/*----------------------------------------------------------------------------*/
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/**@brief 频响输出回调
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@param data:db值存放的首地址，连续存放 len 个 float型的db值
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@return len
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@note
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*/
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/*----------------------------------------------------------------------------*/
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int spectrum_output(void *priv, float *data, u32 len)
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{
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u8 db_num = len;
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float *tar_data = data;
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for (int i = 0; i < db_num; i++) {
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//输出10个 浮点db值
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/* printf("tar_data db 0x%x\n", *(int *)&tar_data[i]); */
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//printf("tar_data db %d.%d\n", (int )tar_data[i],(int)((int)(tar_data[i]*100)%100));
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}
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return len;
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}
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static u32 freq[] = {31, 62, 125, 250, 500, 1000, 2000, 4000, 8000, 16000};
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static u32 quality[] = {
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(int)(0.7f * (1 << 24)), (int)(0.7f * (1 << 24)),
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(int)(0.7f * (1 << 24)), (int)(0.7f * (1 << 24)),
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(int)(0.7f * (1 << 24)), (int)(0.7f * (1 << 24)),
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(int)(0.7f * (1 << 24)), (int)(0.7f * (1 << 24)),
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(int)(0.7f * (1 << 24)), (int)(0.7f * (1 << 24))
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};
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/*----------------------------------------------------------------------------*/
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/**@brief 打开频响统计
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@param sr:采样率
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@return hdl:句柄
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@note
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*/
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/*----------------------------------------------------------------------------*/
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spectrum_hdl *spectrum_open_demo(u32 sr)
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{
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#if TCFG_EQ_ENABLE
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spectrum_hdl *hdl = NULL;
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spectrum_open_parm parm = {0};
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parm.sr = sr;
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parm.channel = 1;
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parm.section = EQ_SECTION_MAX;
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parm.rms_en = 1;
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parm.time_ms = 5;
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parm.attackFactor = 0.9;
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parm.releaseFactor = 0.9;
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parm.freq_center = freq;
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parm.quality_factor = quality;
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parm.d_time = 100;
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parm.alpha = 0.9;
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parm.priv = NULL;
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parm.output = spectrum_output;
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hdl = audio_spectrum_open(&parm);
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return hdl;
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#else
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return NULL;
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#endif
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}
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#endif
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#endif
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