MT6735修改听筒增益

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我是靠谱客的博主阔达蜡烛，最近开发中收集的这篇文章主要介绍MT6735修改听筒增益，觉得挺不错的，现在分享给大家，希望可以做个参考。

概述

文件路径如下：vendormediatekproprietarycustomcommoncgencfgdefaultAudio_ver1_volume_custom_default.h

#ifndef AUDIO_VER1_VOLUME_CUSTOM_DEFAULT_H
#define AUDIO_VER1_VOLUME_CUSTOM_DEFAULT_H

#define VER1_AUD_VOLUME_RING     来电铃声各level数字增益
    32,48,64,80,96,112,128,144,160,176,192,208,224,240,255,
    32,48,64,80,96,112,128,144,160,176,192,208,224,240,255,
    128,136,144,152,160,168,176,184,192,200,212,224,236,248,255,
    128,136,144,152,160,168,176,184,192,200,212,224,236,248,255

#define VER1_AUD_VOLUME_SIP     VOIP各level数字增益
    112,136,160,184,208,232,255,0,0,0,0,0,0,0,0,
    112,136,160,184,208,232,255,0,0,0,0,0,0,0,0,
    112,136,160,184,208,232,255,0,0,0,0,0,0,0,0,
    0,43,85,128,171,213,255,0,0,0,0,0,0,0,0

#define VER1_AUD_VOLUME_MIC     MIC各level数字增益
     64,112,192,144,192,192,184,184,184,184,184,0,0,0,0,
    255,192,192,180,192,192,196,184,184,184,184,0,0,0,0,
    255,208,208,180,255,208,196,0,0,0,0,0,0,0,0,
    255,208,208,164,255,208,172,0,0,0,0,0,0,0,0

#define VER1_AUD_VOLUME_FM     
    32,48,64,80,96,112,128,144,160,176,192,208,224,255,255,
    88,100,112,124,136,148,160,172,184,196,208,220,232,244,255,
    68,80,92,104,116,128,140,152,168,176,188,200,212,232,248,
    32,48,64,80,96,112,128,144,160,176,192,208,224,255,255

#define VER1_AUD_VOLUME_SPH     通过各level数字增益
    40,60,80,100,120,140,160,0,0,0,0,0,0,0,0,
    40,60,80,100,120,140,160,0,0,0,0,0,0,0,0,
    40,60,80,100,120,140,160,0,0,0,0,0,0,0,0,
    40,60,80,100,120,140,160,0,0,0,0,0,0,0,0

#define VER1_AUD_VOLUME_SID 
    0,0,16,0,0,0,0,0,0,0,0,0,0,0,0,
    0,0,32,0,0,0,0,0,0,0,0,0,0,0,0,
    0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
    0,0,0,0,0,0,0,0,0,0,0,0,0,0,0

#define VER1_AUD_VOLUME_MEDIA     media各level数字增益
    32,48,64,80,96,112,160,144,160,176,192,208,224,240,255,
    88,100,112,124,136,148,160,172,184,196,208,220,232,244,255,
    68,80,92,104,116,128,140,152,168,176,188,200,212,232,248,
    32,48,64,80,96,112,128,144,160,176,192,208,224,240,255

#define VER1_AUD_VOLUME_MATV    MATV各level数字增益
    32,48,64,80,96,112,128,144,160,176,192,208,224,240,255,
    88,100,112,124,136,148,160,172,184,196,208,220,232,244,255,
    68,80,92,104,116,128,140,152,168,176,188,200,212,232,248,
    32,48,64,80,96,112,128,144,160,176,192,208,224,240,255

#define VER1_AUD_NORMAL_VOLUME_DEFAULT     听筒模拟增益
    128,128,128,128,128,128

#define VER1_AUD_HEADSER_VOLUME_DEFAULT    耳机模拟增益
    124,148,148,148,148,148

#define VER1_AUD_SPEAKER_VOLUME_DEFAULT     speaker模拟增益
    160,120,120,120,120,120

#define VER1_AUD_HEADSETSPEAKER_VOLUME_DEFAULT   耳机和speaker同时开启时的speaker模拟增益
    112,160,132,132,132,132,132,132

#define VER1_AUD_EXTAMP_VOLUME_DEFAULT 
    132,132,132,132,132,132

#define VER1_AUD_VOLUME_LEVEL_DEFAULT 
    15,7,15,15,7,7,7,15,15

/* mic volume setting for 2G/3G HAC mode */    
#define DEFAULT_VER1_AUD_VOLUME_MIC_HAC 
     64,112,192,144,192,192,184,184,184,184,184,0,0,0,0
     
/* speech dl volume setting for 2G/3G HAC mode */    
#define DEFAULT_VER1_AUD_VOLUME_SPH_HAC 
    40,52,64,76,88,100,112,0,0,0,0,0,0,0,0

/* sidetone volume setting for 2G/3G HAC mode */    
#define DEFAULT_VER1_AUD_VOLUME_SID_HAC 
    0,0,16,0,0,0,0,0,0,0,0,0,0,0,0

#endif

四行数据增益分别对应：

听筒模式

耳机模式

喇叭模式

耳机和喇叭同时出声的模式

修改听筒增益，只需要修改VER1_AUD_VOLUME_SPH对应的第一行数据即可。