Question

我正在开发一个使用WebRTC进行视频流的Google Glass应用程序。问题是玻璃在20秒后过热然后关闭。这是个常见的问题吗？我们有什么方法可以延长录音时间并减缓过热？

Answer 1

您的玻璃过热，因为视频流传输过程中的电池电量消耗较高。您可以使用libstream第三方库，它具有大量优化的电池消耗代码，也可以使用玻璃。对于WebRTC this库来说，它是最好的。我还提供了一些用于在库中实现应用程序的通用代码。请看看它会有所作为。

 public class MainActivity extends Activity implements SurfaceHolder.Callback, Session.Callback {

private int mRtspPort = -1;

private ServiceConnection mRtspServerConnection = new ServiceConnection() {

    private static final int RTSP_PORT = 1234;

    @Override
    public void onServiceConnected(ComponentName className, IBinder binder) {
        RtspServer s = ((RtspServer.LocalBinder) binder).getService();
        s.setPort(RTSP_PORT);
        mRtspPort = s.getPort();
    }
    };

    @Override
    protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    this.requestWindowFeature(Window.FEATURE_NO_TITLE);
    getWindow().addFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN);
    getWindow().addFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON);
    setContentView(R.layout.activity_main);

    // Configures the SessionBuilder
    SessionBuilder.getInstance()
            .setSurfaceView((SurfaceView) findViewById(R.id.surface))
            .setCallback(this)
            .setPreviewOrientation(90)
            .setContext(getApplicationContext())
        .setAudioEncoder(SessionBuilder.AUDIO_NONE)
        .setVideoEncoder(SessionBuilder.VIDEO_H264)
        .setVideoQuality(new VideoQuality(320, 240, 20, 500000));

// Starts the RTSP server
bindService(new Intent(this, RtspServer.class), mRtspServerConnection, Context.BIND_AUTO_CREATE);
}

@Override
public void onResume() {
super.onResume();
mResumed = true;
displayConnectString();
SessionBuilder.getInstance().getSurfaceView().setAspectRatioMode(SurfaceView.ASPECT_RATIO_PREVIEW);
SessionBuilder.getInstance().getSurfaceView().getHolder().addCallback(this);
}

private void displayConnectString() {
WifiManager wifiMgr = (WifiManager) getSystemService(WIFI_SERVICE);
WifiInfo wifiInfo = wifiMgr.getConnectionInfo();
int ip = wifiInfo.getIpAddress();
String ipAddress = Formatter.formatIpAddress(ip);
((TextView) findViewById(R.id.connectInfo)).setText("rtsp://" + ipAddress + ":" + mRtspPort);
}

@Override
public void onDestroy() {
super.onDestroy();
unbindService(mRtspServerConnection);
}

@Override
 public void onSessionStarted() {
((TextView) findViewById(R.id.connectInfo)).setText("");
}

@Override
public void onSessionStopped() {
    displayConnectString();
}
}

希望这会有所帮助!!!

在视频流上的玻璃过热

1 个答案: