android音频采集

视音频包：http://download.csdn.net/detail/fanxiaojun66/4565705

1：创建一个AudioRecord类

AudioRecord *mpAudioRecord=new AudioRecord();

2：设置采集参数

       2.2版本：

        mpAudioRecord->set(AUDIO_SOURCE_DEFAULT, 0, 0,

AudioSystem::CHANNEL_IN_MONO, 0, 0,  AudioRecordCallback, this,  0,0);

      2.3版本：(多了一个参数）

       mpAudioRecord->set(AUDIO_SOURCE_DEFAULT, 0, 0,

AudioSystem::CHANNEL_IN_MONO, 0, 0,  AudioRecordCallback, this,  0,0,0);
 

3：检查设置是否成功：

       if (mpAudioRecord->initCheck() != NO_ERROR)
         

return -1;  //error!
 

4:启动采集：
      

mpAudioRecord->start();
 

5：采集回调函数的定义：
 

void Caudioplayer::AudioRecordCallback(int event, void* user, void *info)
{

        if (event != AudioTrack::EVENT_MORE_DATA)
                 return;
        Caudioplayer *audioplayer=static_cast<Caudioplayer*>(user);
        AudioTrack::Buffer *buffer = static_cast<AudioTrack::Buffer *>(info);
        short *lpOut = buffer->i16;
        Mutex::Autolock lock(audioplayer->mLock);
        copy_size=4096>buffer->size?buffer->size:4096;
        memcpy(tembuffer,lpOut,copy_size);
}