huxi
112 lines
4.5 KiB
C
112 lines
4.5 KiB
C
/*******************************************************************************************
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File : audio_energy_detect.h
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By : LinHaibin
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brief: 数据能量检测
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memory : 148 + 56 * channels (Byte)
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mips:
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dcc mode: 3MHz / 44100 points / 2channel / sec
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nodcc mode: 2.3MHz / 44100 points / 2channel / sec
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Email: linhaibin@zh-jieli.com
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date : Fri, 24 Jul 2020 18:11:37 +0800
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********************************************************************************************/
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#ifndef _AUDIO_ENERGY_DETECT_H_
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#define _AUDIO_ENERGY_DETECT_H_
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#include "typedef.h"
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#define AUDIO_E_DET_UNMUTE (0x00)
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#define AUDIO_E_DET_MUTE (0x01)
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typedef struct _audio_energy_detect_param {
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s16 mute_energy; // mute 阈值
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s16 unmute_energy; // unmute 阈值
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u16 mute_time_ms; // 能量低于mute阈值进入mute状态时间
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u16 unmute_time_ms; // 能量高于unmute阈值进入unmute状态时间
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u32 sample_rate; // 采样率
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void *prive;
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void (*event_handler)(void *prive, u8, u8, u8 ch_total); // 事件回调函数 event channel
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u16 count_cycle_ms; // 能量计算的时间周期
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u8 ch_total; // 通道总数
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u8 pcm_mute; // 保留，未使用
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u8 onoff; // 保留，未使用
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u8 skip; // 1:数据不处理 0:处理
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u8 dcc; // 1:去直流打开 0:关闭
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u8 bit_width;
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} audio_energy_detect_param;
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extern void *audio_energy_detect_entry_get(void *_hdl);
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extern void *audio_energy_detect_open(audio_energy_detect_param *param);
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extern int audio_energy_detect_run(void *_hdl, s16 *data, u32 len);
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extern int audio_energy_detect_close(void *_hdl);
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extern int audio_energy_detect_skip(void *_hdl, u32 channel, u8 skip);
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extern int audio_energy_detect_energy_get(void *_hdl, u8 ch);
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extern int audio_energy_detect_sample_rate_update(void *_hdl, u32 sample_rate);
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extern void audio_energy_set_event_handler(void *_hdl, void *prive, void (*event_handler)(void *prive, u8, u8, u8 ch_total));
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struct energy_detect_parm_tool_cfg {
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s16 is_bypass;
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s16 mute_energy; // mute 阈值 (0~32767)
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s16 unmute_energy; // unmute 阈值(0~32767) unmute > mute
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u16 mute_time_ms; // 能量低于mute阈值进入mute状态时间(1~30000)ms (min >= cyc_time)
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u16 unmute_time_ms; // 能量高于unmute阈值进入unmute状态时间(1~30000)ms
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u16 count_cycle_ms; // 能量计算的时间周期(1~1000)ms
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u16 dcc; // 1:去直流打开 0:关闭
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} __attribute__((packed));
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struct energy_detect_get_parm {
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char name[16];
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int type;
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void (*event_handler)(void *prive, u8, u8, u8 ch_total); // 事件回调函数 event channel
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};
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struct audio_get_energy {
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char name[16];
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int tar_ch;//目标通道,(BIT(0)对应通道0，如此类推)
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int energy;//目标通道的能量值
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};
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#define SET_ENERGY_DET_EVENT_HANDLER 0xaa
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/******************************************************************************
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audio energy detect demo
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INCLUDE:
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#include "application/audio_energy_detect.h"
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void *audio_e_det_hdl = NULL;
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struct list_head *audio_e_det_entry = NULL;
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void test_e_det_handler(void *prive,u8 event, u8 ch)
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{
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printf(">>>> ch:%d %s\n", ch, event ? ("MUTE") : ("UNMUTE"));
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// ch < ch_total 时：表示通道(ch)触发的事件
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// ch = ch_total 时：表示全部通道都触发的事件
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}
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OPEN:
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audio_energy_detect_param e_det_param = {0};
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e_det_param.mute_energy = 5;
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e_det_param.unmute_energy = 10;
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e_det_param.mute_time_ms = 100;
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e_det_param.unmute_time_ms = 50;
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e_det_param.count_cycle_ms = 100;
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e_det_param.sample_rate = 44100;
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e_det_param.event_handler = test_e_det_handler;
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e_det_param.ch_total = 2;
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e_det_param.dcc = 1;
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audio_e_det_hdl = audio_energy_detect_open(&e_det_param);
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1.接入 audio stream
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audio_e_det_entry = audio_energy_detect_entry_get(audio_e_det_hdl);
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entries[entry_cnt++] = audio_e_det_entry;
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2.手动调用
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audio_energy_detect_run(audio_e_det_hdl, data, len);
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// data:需要运算的音频数据起始地址 len:需要运算的音频数据总字节长度
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CLOSE:
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audio_energy_detect_close(audio_e_det_hdl);
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******************************************************************************/
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#endif // #ifndef _AUDIO_ENERGY_DETECT_H_
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