app/src/main/java/ai/suanzi/rtmpclient/CameraView.java

   1 package ai.suanzi.rtmpclient;
   2
   3 import android.content.Context;
   4 import android.view.SurfaceHolder;
   5 import android.view.SurfaceView;
   6 import android.widget.FrameLayout;
   7
   8 import org.apache.log4j.Logger;
   9
  10 public class CameraView extends SurfaceView implements SurfaceHolder.Callback {
  11
  12     private static Logger gLogger = Logger.getLogger("CameraView");
  13     public static int SCREEN_WIDTH;
  14     public static int SCREEN_HEIGHT;
  15
  16     private Context mContext;
  17     private SurfaceHolder mHolder;
  18     private Callback mCallback;
  19     private int width;
  20     private int height;
  21
  22     public CameraView (Context context, Callback cb) {
  23         super(context);
  24         this.mContext = context;
  25         mHolder = this.getHolder();
  26         mHolder.addCallback(this);
  27         this.mCallback = cb;
  28     }
  29
  30     public void setLayout(int width, int heitht){
  31         this.height = heitht;
  32         this.width = width;
  33         gLogger.error("setLayout, screen size w: " + SCREEN_WIDTH + ", h:" + SCREEN_HEIGHT + ". preview size, w: " + width + ", h: " + height);
  34
  35         float ratio = (float) height / width; // 3/4,,,  640x480  1008x1344
  36         FrameLayout.LayoutParams lp = (FrameLayout.LayoutParams)getLayoutParams();
  37         gLogger.error("ratio = " + ratio + ". xxx=" + (float)(SCREEN_HEIGHT / SCREEN_HEIGHT));
  38         if(ratio > (float)(SCREEN_HEIGHT / SCREEN_WIDTH) ){
  39             lp.width = SCREEN_HEIGHT * width / height;
  40             lp.height = SCREEN_HEIGHT;
  41             lp.leftMargin = (SCREEN_WIDTH - lp.width ) / 2;
  42             lp.topMargin = 0;
  43         } else {
  44             lp.width = SCREEN_WIDTH;
  45             lp.height = SCREEN_WIDTH * height / width;
  46             lp.leftMargin = 0;
  47             lp.topMargin = (SCREEN_HEIGHT - lp.height) / 2;
  48         }
  49         gLogger.error("width=" + lp.width + ", height=" + lp.height + ". leftMargin=" + lp.leftMargin + ", topMargin=" + lp.topMargin);
  50         this.setLayoutParams(lp);
  51     }
  52
  53     // SurfaceHolder.Callback implementation
  54     @Override
  55     public void surfaceCreated(final SurfaceHolder holder){
  56         gLogger.debug("SurfacedCreated, screen size w: " + SCREEN_WIDTH + ", h:" + SCREEN_HEIGHT + ". preview size, w: " + width + ", h: " + height);
  57     }
  58
  59     @Override
  60     public void surfaceChanged(SurfaceHolder holder, int format, int widht, int height){
  61         gLogger.debug("surfaceChanged");
  62         mHolder = holder;
  63         mCallback.onSurfaceChanged(holder, format, widht, height);
  64     }
  65
  66     @Override
  67     public void surfaceDestroyed(SurfaceHolder holder){ gLogger.debug("surfaceDestroyed");
  68     }
  69
  70     public interface Callback {
  71         void onSurfaceChanged(SurfaceHolder holder, int format, int width, int height);
  72     }
  73 }