如何检测 Zidoo Digital Android Box 的 HDMI 连接或断开状态?
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【中文标题】如何检测 Zidoo Digital Android Box 的 HDMI 连接或断开状态?【英文标题】:How to detect status HDMI in connected or disconnected for Zidoo Digital Android Box? 【发布时间】:2018-01-08 02:33:33 【问题描述】:我正在使用用于 HDMI 视频播放的 ziddo 数字盒。连接和断开 HDMI 时出现问题。它正在冻结屏幕。 我正在使用此代码:
public class RealtekSurfaceView extends SurfaceView
public static final String TAG = "RealtekSurfaceView";
//A reference to the context
private Context mContext = null;
//Reference to ViewGroup
private ViewGroup mViewGroup = null;
//Integers to keep the width, height and FPS
private int width = 0;
private int height = 0;
private int fps = 0;
//Reference to the Surface holder
private SurfaceHolder mSurfaceHolder = null;
private SurfaceHolder.Callback mSurfaceHolderCallback = null;
//Reference to the Broadcast receiver
private BroadcastReceiver mHdmiRxReceiver = null;
//Boolean to indicate if the HDMI IN is connected
private boolean isConnected = false;
//A few constants to pass the data along
public static final int DISPLAY = 0;
public static final int DISPLAYTIME = 200;
//A reference to a handler
Handler mHandler = null;
//Reference to realtek hdmi manager
private RtkHDMIRxManager mRtkHdmiManager = null;
//Boolean to identify if the display is ON or OFF
public static boolean isPreviewAvailable = false;
//A boolean to denote if we are displaying already
private boolean isDisplayOn = false;
String videoPath;
String videoType;
boolean HDMI_AV=false;
//Constructor to the RealtekSurfaceView class, this will take care of populating the context, view group, surface holder.
//It will also take care of setting up the surfaceholder callback
public RealtekSurfaceView(Context ctx, ViewGroup viewGroup)
super(ctx);
this.mContext = ctx;
this.mViewGroup = viewGroup;
this.mSurfaceHolder = getHolder();
//Add the callback
mSurfaceHolderCallback = new SurfaceCallback();
mSurfaceHolder.addCallback(mSurfaceHolderCallback);
init();
public RealtekSurfaceView(Context context,String filePath,String videoType,int x,int y,int width,int height,boolean HDMI_AV)
super(context);
// TODO Auto-generated constructor stub
this.mContext=context;
this.videoType=videoType;
this.width=width;
this.height=height;
this.HDMI_AV=HDMI_AV;
this.videoPath=filePath;
this.mSurfaceHolder = getHolder();
this.mSurfaceHolder.addCallback(new SurfaceCallback());
this.mSurfaceHolder.setType(SurfaceHolder.SURFACE_TYPE_PUSH_BUFFERS);
setBackgroundColor(Color.TRANSPARENT);
public void init()
//Make the handler instance ready to be used by remaining components
mHandler = new Handler()
@Override
public void handleMessage(Message msg)
switch (msg.what)
case DISPLAY:
if (isConnected)
play();
break;
default:
break;
;
initHdmiConnect();
//Start listening to and processing the incoming HDMI IN connection from the Realtek internal classes
private void initHdmiConnect()
mHdmiRxReceiver = new BroadcastReceiver()
@Override
public void onReceive(Context context, Intent intent)
isConnected = intent.getBooleanExtra(HDMIRxStatus.EXTRA_HDMIRX_PLUGGED_STATE, false);
if (isConnected)
play();
else
stop();
;
isConnected = isHdmiConnected(mContext);
mContext.registerReceiver(mHdmiRxReceiver, new IntentFilter(HDMIRxStatus.ACTION_HDMIRX_PLUGGED));
//Function to determine if the HDMI IN is connected
public static boolean isHdmiConnected(Context ctx)
Intent batteryStatus = ctx.registerReceiver(null, new IntentFilter(HDMIRxStatus.ACTION_HDMIRX_PLUGGED));
if(null != batteryStatus)
return batteryStatus.getBooleanExtra(HDMIRxStatus.EXTRA_HDMIRX_PLUGGED_STATE, false);
else
return false;
//The surfaceholder.callback implementation, this will try to launch/stop the play by appropriately setting up few variables
private final class SurfaceCallback implements SurfaceHolder.Callback
@Override
public void surfaceChanged(SurfaceHolder surfaceHolder, int i, int i1, int i2)
Log.i("RealtekSurface", "changed");
@Override
public void surfaceCreated(SurfaceHolder surfaceHolder)
isPreviewAvailable = true;
play();
@Override
public void surfaceDestroyed(SurfaceHolder surfaceHolder)
isPreviewAvailable = false;
stop();
public boolean play()
this.setVisibility(View.VISIBLE);
if (!isDisplayOn && isPreviewAvailable)
mRtkHdmiManager = new RtkHDMIRxManager();
if (null != mRtkHdmiManager)
HDMIRxStatus mHdmiRxStatus = mRtkHdmiManager.getHDMIRxStatus();
if (mHdmiRxStatus != null && mHdmiRxStatus.status == HDMIRxStatus.STATUS_READY)
if (mRtkHdmiManager.open() != 0)
//TODO write code for retrying the same after "t" time using the handler
height = 0;
width = 0;
mRtkHdmiManager = null;
mHandler.sendEmptyMessageDelayed(DISPLAY, DISPLAYTIME);
return false;
HDMIRxParameters mHdmiRxParams = mRtkHdmiManager.getParameters();
getSupportedPreviewSizes(mHdmiRxParams, mHdmiRxStatus.width, mHdmiRxStatus.height);
fps = getSupportedFps(mHdmiRxParams);
else
if(null!=mHandler)
mHandler.sendEmptyMessageDelayed(DISPLAY, DISPLAYTIME);
return false;
//Following is the code to play
try
mRtkHdmiManager.setPreviewDisplay(mSurfaceHolder);
HDMIRxParameters mParams = new HDMIRxParameters();
mParams.setPreviewSize(width, height);
mParams.setPreviewFrameRate(fps);
mRtkHdmiManager.setParameters(mParams);
mRtkHdmiManager.play();
isDisplayOn = true;
catch (Exception e)
stop();
e.printStackTrace();
else if (!isPreviewAvailable)
//TODO write code for retrying the same after "t" time using the handler
if(null!=mHandler)
mHandler.sendEmptyMessageDelayed(DISPLAY, DISPLAYTIME);
return false;
else
return false;
return true;
private void stop()
//Reset the visibility of the surface view to invisible, else the HDMI IN will not be able to retrieve this view
this.setVisibility(View.INVISIBLE);
//Destroy the instance of the running RealTek Manager after stopping that
if (mRtkHdmiManager != null)
mRtkHdmiManager.stop();
mRtkHdmiManager.release();
mRtkHdmiManager = null;
//Reset the booleans to their origin values
isDisplayOn = false;
width = 0;
height = 0;
fps = 0;
private int getSupportedFps(HDMIRxParameters mHdmiRxParameters)
List<Integer> previewFrameRates = mHdmiRxParameters.getSupportedPreviewFrameRates();
int fps = 0;
if (previewFrameRates != null && previewFrameRates.size() > 0)
fps = previewFrameRates.get(previewFrameRates.size() - 1);
else
fps = 30;
return fps;
private void getSupportedPreviewSizes(HDMIRxParameters mHdmiRxParams, int rxWidth, int rxHeight)
List<RtkHDMIRxManager.Size> mPreviewSizes = mHdmiRxParams.getSupportedPreviewSizes();
int retWidth = 0, retHeight = 0;
if (mPreviewSizes == null || mPreviewSizes.size() <= 0)
return;
for (int i = 0; i < mPreviewSizes.size(); i++)
if (mPreviewSizes.get(i) != null && rxWidth == mPreviewSizes.get(i).width)
retWidth = mPreviewSizes.get(i).width;
retHeight = mPreviewSizes.get(i).height;
if (rxHeight == mPreviewSizes.get(i).height)
break;
if (retWidth == 0 && retHeight == 0)
if (mPreviewSizes.get(mPreviewSizes.size() - 1) != null)
width = mPreviewSizes.get(mPreviewSizes.size() - 1).width;
height = mPreviewSizes.get(mPreviewSizes.size() - 1).height;
width = retWidth;
height = retHeight;
当我断开并连接 HDMI 时,它应该会刷新屏幕。代码中存在一些问题,它无法在运行时创建广播断开和连接状态。
【问题讨论】:
【参考方案1】:您的代码中有一个问题:
public RealtekSurfaceView(Context context,String filePath,String videoType,int x,int y,int width,int height,boolean HDMI_AV)
super(context);
this.mContext=context;
this.videoType=videoType;
this.width=width;
this.height=height;
this.HDMI_AV=HDMI_AV;
this.videoPath=filePath;
this.mSurfaceHolder = getHolder();
this.mSurfaceHolder.addCallback(new SurfaceCallback());
this.mSurfaceHolder.setType(SurfaceHolder.SURFACE_TYPE_PUSH_BUFFERS);
setBackgroundColor(Color.TRANSPARENT);
init(); <-- you have to add this, as you are forgetting to initialize the broadcast receiver
【讨论】:
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