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lensman
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相机服务跨进程设计

chengzhenyu 8 years ago
parent
8843823aab
commit
ea4e1a0899
2 changed files with 167 additions and 0 deletions
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  1. 3 0
      app/src/main/AndroidManifest.xml
  2. 164 0
      app/src/main/java/ai/pai/lensman/dslr/CameraService.java

+ 3 - 0
app/src/main/AndroidManifest.xml
View File 

@@ -140,6 +140,9 @@
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         <service android:name=".service.OrderDealService"/>
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+        <service android:name=".dslr.CameraService"
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+            android:process=":camera"/>
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+
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     </application>
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 </manifest>

+ 164 - 0
app/src/main/java/ai/pai/lensman/dslr/CameraService.java
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@@ -3,13 +3,177 @@ package ai.pai.lensman.dslr;
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 import android.app.Service;
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 import android.content.Intent;
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+import android.os.AsyncTask;
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+import android.os.Bundle;
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 import android.os.IBinder;
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+import android.os.Process;
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+import android.text.TextUtils;
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+
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+import com.android.common.utils.LogHelper;
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+
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+import java.util.Timer;
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+import java.util.TimerTask;
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 public class CameraService extends Service {
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+    private boolean isInitExecuted;
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+    private CameraInitTask cameraInitTask;
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+
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+    private Timer photoCaptureTimer;
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+    private String sessionWorkingDirPath;
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+    private boolean isLastQueryReturned = true;
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+
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+    public static final String ACTION_CAMERA_SERVICE_STATUS_CHANGE = "action.ai.pai.lensman.dslr.cameraservice";
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+    public static final String EXTRA_STATUS_PART = "status";
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+    public static final String EXTRA_DATA_PART = "data";
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+
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+    public static final int MSG_CAMERA_INIT_SUCCESS = 8000;
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+    public static final int MSG_CAMERA_CONN_ERROR = 8001;
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+    public static final int MSG_CAMERA_NEW_PHOTO_FOUND = 8002;
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+
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+    public static final int CMD_INIT_CAMERA_CONNECTION = 9000;
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+    public static final int CMD_EXIT_CAMERA_CONNECTION = 9001;
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+    public static final int CMD_START_CAPTURE_PHOTO = 9002;
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+
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+    private static final String MSG_TYPE_CAMERA_ERROR = "camero error";//相机错误，可能是线松动了。先exit，然后重新init
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+    private static final String MSG_TYPE_NOT_INIT = "not init";  //需要初始化
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+    private static final String MSG_TYPE_TIME_OUT = "time out";  //继续调用waitforevent
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+
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+    @Override
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+    public void onCreate() {
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+        super.onCreate();
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+    }
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+
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     @Override
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     public IBinder onBind(Intent intent) {
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         return null;
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     }
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+    @Override
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+    public int onStartCommand(Intent intent, int flags, int startId) {
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+        if(intent!=null&&intent.getIntExtra("cmd",0)>0){
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+            int cmd = intent.getIntExtra("cmd",0);
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+            if(cmd == CMD_EXIT_CAMERA_CONNECTION){
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+                stopCameraService();
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+                return START_NOT_STICKY;
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+            }else if(cmd == CMD_INIT_CAMERA_CONNECTION){
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+                if(!isInitExecuted){
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+                    cameraInitTask = new CameraInitTask();
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+                    cameraInitTask.execute();
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+                }
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+            }else if(cmd == CMD_START_CAPTURE_PHOTO){
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+                if(isInitExecuted){
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+                    sessionWorkingDirPath = intent.getStringExtra("session_dir");
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+                    if(!TextUtils.isEmpty(sessionWorkingDirPath)){
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+                        startCapture();
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+                    }
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+                }
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+            }
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+        }
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+
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+        return super.onStartCommand(intent, flags, startId);
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+    }
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+
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+    @Override
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+    public void onDestroy() {
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+        super.onDestroy();
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+    }
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+
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+    private void stopCameraService(){
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+        if(cameraInitTask!=null){
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+            cameraInitTask.cancel();
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+        }
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+        if(photoCaptureTimer !=null){
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+            photoCaptureTimer.cancel();
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+            photoCaptureTimer = null;
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+        }
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+        stopSelf();
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+        Process.killProcess(Process.myPid());
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+        System.exit(0);
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+    }
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+
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+    class CameraInitTask extends AsyncTask<Void,Integer,Integer>{
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+
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+        private boolean isCancelled = false;
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+
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+        public void cancel(){
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+            isCancelled = true;
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+        }
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+
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+        @Override
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+        protected Integer doInBackground(Void... params) {
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+            isInitExecuted = true;
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+             return  CameraJNIInterface.getInstance().java_mygpcamerainit();
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+        }
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+
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+        @Override
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+        protected void onPostExecute(Integer result) {
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+
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+            if(isCancelled){
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+                return;
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+            }
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+            if(result>=0){
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+                Bundle bundle = new Bundle();
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+                bundle.putInt(EXTRA_STATUS_PART,MSG_CAMERA_INIT_SUCCESS);
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+                sendCameraIntent(bundle);
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+            }else{
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+                Bundle bundle = new Bundle();
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+                bundle.putInt(EXTRA_STATUS_PART, MSG_CAMERA_CONN_ERROR);
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+                sendCameraIntent(bundle);
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+                stopCameraService();
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+            }
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+        }
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+    }
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+    public void startCapture() {
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+        if(photoCaptureTimer !=null){
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+            photoCaptureTimer.cancel();
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+            photoCaptureTimer = null;
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+        }
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+        photoCaptureTimer = new Timer();
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+        photoCaptureTimer.schedule(new TimerTask() {
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+            @Override
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+            public void run() {
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+                fetchPhotoTask();
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+            }
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+        },1000,10);
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+    }
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+
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+    private void fetchPhotoTask(){
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+        if(!isLastQueryReturned){
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+            LogHelper.d("czy","fetchPhotoTask last query not finished,return ");
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+            return;
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+        }
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+
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+        isLastQueryReturned = false;
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+        String eventMsg = CameraJNIInterface.getInstance().java_mygpcamerawaitforevent(sessionWorkingDirPath);
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+        LogHelper.d("czy","mygpcamerawaitforevent return result = "+eventMsg);
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+        if(eventMsg!=null && eventMsg.length()>0){
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+            if(MSG_TYPE_NOT_INIT.equalsIgnoreCase(eventMsg)||MSG_TYPE_CAMERA_ERROR.equalsIgnoreCase(eventMsg)){
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+                Bundle bundle = new Bundle();
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+                bundle.putInt(EXTRA_STATUS_PART, MSG_CAMERA_CONN_ERROR);
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+                sendCameraIntent(bundle);
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+                stopCameraService();
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+            }else if(MSG_TYPE_TIME_OUT.equalsIgnoreCase(eventMsg)){
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+
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+            }else{
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+                String sub = eventMsg.substring(0,1);
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+                if(TextUtils.isDigitsOnly(sub)){
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+                    LogHelper.d("czy","fetchPhotoTask new photo found");
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+                    Bundle bundle = new Bundle();
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+                    bundle.putInt(EXTRA_STATUS_PART, MSG_CAMERA_NEW_PHOTO_FOUND);
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+                    bundle.putString(EXTRA_DATA_PART,eventMsg);
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+                    sendCameraIntent(bundle);
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+                }
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+            }
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+        }
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+
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+        isLastQueryReturned = true;
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+    }
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+
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+    private void sendCameraIntent(Bundle bundle){
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+        Intent intent = new Intent(ACTION_CAMERA_SERVICE_STATUS_CHANGE);
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+        intent.putExtras(bundle);
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+        sendBroadcast(intent);
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+    }
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+
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 }