MTK Android L 如何单独使用主、副mic

tangh

[DESCRIPTION]

Android L上如何单独使用主、副mic

[SOLUTION]
在AudioALSAHardware.cpp中定义
static String8 keySET_MIC_CHOOSE= String8("SET_MIC_CHOOSE");
添加

1. #include "AudioALSAHardwareResourceManager.h"
   
2. 
   
3. status_t AudioALSAHardware::setParameters(const String8 &keyValuePairs)
   
4. 
   
5. //add this start
   
6. if (param.getInt(keySET_MIC_CHOOSE, value) == NO_ERROR) {
   
7. param.remove(keySET_MIC_CHOOSE);
   
8. ALOGD("+%s(): %s", __FUNCTION__, "setBuiltInMicSpecificType");
   
9. if(value==2){
   
10. AudioALSAHardwareResourceManager::getInstance()->setBuiltInMicSpecificType(BUILTIN_MIC_MIC2_ONLY);
    
11. }elseif(value==1){
    
12. AudioALSAHardwareResourceManager::getInstance()->setBuiltInMicSpecificType(BUILTIN_MIC_MIC1_ONLY);
    
13. }else{
    
14. AudioALSAHardwareResourceManager::getInstance()->setBuiltInMicSpecificType(BUILTIN_MIC_DEFAULT);
    
15. }
    
16. }
    
17. //add this end
    

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然后上层调用

1. AudioSystem.setParameters("SET_MIC_CHOOSE=1");//仅使用主mic
   
2. AudioSystem.setParameters("SET_MIC_CHOOSE=2");//仅使用副mic
   
3. AudioSystem.setParameters("SET_MIC_CHOOSE=0");//还原默认设置，使用双mic

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