MTK修改听筒音量，拨号键盘音量，开关机音量调整
工模调节
▪进入EM模式
（*
#
*
#3646633#
*
#
*
),您将看到不同模式（听筒、耳机、外放、耳机同时外放）下的音频参数。
audio_ver1_volume_custom_default.h
(alps/mediatek/custom/common/cgen/inc/audio/[project])
#ifndef AUDIO_VER1_VOLUME_CUSTOM_DEFAULT_H
#define AUDIO_VER1_VOLUME_CUSTOM_DEFAULT_H
#define VER1_AUD_VOLUME_RING \
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,\
104,128,152,176,200,224,248,0,0,0,0,0,0,0,0,\
104,128,152,176,200,224,248,0,0,0,0,0,0,0,0
#define VER1_AUD_VOLUME_SIP \
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 \
64,112,192,164,192,192,184,184,184,184,184,0,0,0,0,\
255,192,192,176,192,192,196,184,184,184,184,0,0,0,0,\
255,208,208,164,255,208,196,0,0,0,0,0,0,0,0,\
255,208,208,164,255,208,172,0,0,0,0,0,0,0,0
#ifdef FM_DIGITAL_INPUT
#define VER1_AUD_VOLUME_FM \
16,80,112,144,176,208,240,0,0,0,0,0,0,0,0,\
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,\
112,136,160,184,208,232,255,0,0,0,0,0,0,0,0
#else
#define VER1_AUD_VOLUME_FM \
16,80,112,144,176,208,240,0,0,0,0,0,0,0,0,\
16,80,112,144,176,208,240,0,0,0,0,0,0,0,0,\
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
#endif
#define VER1_AUD_VOLUME_SPH \
80,88,100,116,124,132,140,0,0,0,0,0,0,0,0,\
84,96,112,124,132,140,148,0,0,0,0,0,0,0,0,\
80,88,100,116,124,132,140,0,0,0,0,0,0,0,0,\
40,52,64,76,88,100,112,0,0,0,0,0,0,0,0
#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 \
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,\
104,128,152,176,200,224,248,0,0,0,0,0,0,0,0,\
104,128,152,176,200,224,248,0,0,0,0,0,0,0,0
#define VER1_AUD_VOLUME_MATV \
0,32,64,92,128,160,192,0,0,0,0,0,0,0,0,\
0,32,64,92,128,160,192,0,0,0,0,0,0,0,0,\
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_NORMAL_VOLUME_DEFAULT \
128,128,128,128,128,128
#define VER1_AUD_HEADSER_VOLUME_DEFAULT \
148,148,148,148,148,148
#define VER1_AUD_SPEAKER_VOLUME_DEFAULT \
120,120,120,120,120,120
#define VER1_AUD_HEADSETSPEAKER_VOLUME_DEFAULT \
132,120,132,132,132,132,132,132
#define VER1_AUD_EXTAMP_VOLUME_DEFAULT \
132,132,132,132,132,132
#define VER1_AUD_VOLUME_LEVEL_DEFAULT \
7,7,7,7,7,7,7,7,7
#endif
nSpeech Volumecustomize
Ø当AudioSystem处于
MODE_IN_CALL
模式 .
Ø输出设备有三种Normal, Headset , Hands-free mode
Ø调节的是模拟增益
开关机音量调整
▪如果想改变开关机音量,有两种方式
–第一是把AudioMtkPolicyManager.cpp
•(alps/mediatek/platform/common/hardware/audio/)
•#define
BOOT_ANIMATION_VOLUME(0.25) 修改此值，最大为1
–第二是修改代码
•BootAnimation.cpp (alps/frameworks/base/cmds/bootanimation)
•在bool BootAnimation::threadLoop()里mediastatus = mediaplayer->start()前面 增加下面这行代码
•
mediaplayer
->
setVolume
(
leftVolume,rightVolume
);//适当调节音量值,参数范围0-1,默认是1
–第三种
•更换开关机资源文件
拨号键盘音量
（
DTMF
）
▪方法一，DialpadFragment.java
–Alps/packages/apps/contacts/src/com/android/contacts/dialpad/
–private static final int
TONE_RELATIVE_VOLUME = 80; 最大可到100，最小是0
▪方法二，在代码中AudioMTKPolicyManager.cpp
–Alps/mediatek/platform/common/hardware/audio
–Static unsigned char audiovolume_dtmf[][]
详细文件参考
http://download.csdn.net/detail/wds1181977/8227493