package com.example.cameraddk;

import android.util.Log;
import java.io.IOException;
import android.content.Context;
import android.hardware.Camera;
import android.view.SurfaceView;
import android.view.SurfaceHolder;

/** A basic Camera preview class */
public class CameraPreview extends SurfaceView implements SurfaceHolder.Callback {
    private SurfaceHolder mHolder;
    private Camera mCamera;
    CameraUtil debug = new CameraUtil();

    public CameraPreview(Context context, Camera camera) {
        super(context);
        mCamera = camera;
        debug.debug("CameraPreview","CameraPreview");
        mHolder = getHolder();
        mHolder.addCallback(this);
        // deprecated setting, but required on Android versions prior to 3.0
        mHolder.setType(SurfaceHolder.SURFACE_TYPE_PUSH_BUFFERS);
    }

    public void surfaceCreated(SurfaceHolder holder) {
        debug.debug("CameraPreview","surfaceCreated");

        // The Surface has been created, now tell the camera where to draw the preview.
        try {
            mCamera.setPreviewDisplay(holder);
            mCamera.startPreview();
        } catch (IOException e) {
            Log.d("CameraPreview", "Error setting camera preview: " + e.getMessage());
        }
    }

    public void surfaceDestroyed(SurfaceHolder holder) {
        // empty. Take care of releasing the Camera preview in your activity.
        debug.debug("CameraPreview","surfaceDestroyed");
        if( mCamera != null ) {
            mCamera.stopPreview( );
            //mCamera.release();
        }
    }

    public void surfaceChanged(SurfaceHolder holder, int format, int w, int h) {
        debug.debug("CameraPreview","surfaceChanged");
        // If your preview can change or rotate, take care of those events here.
        // Make sure to stop the preview before resizing or reformatting it.

        if (mHolder.getSurface() == null){
          // preview surface does not exist
          return;
        }

        // stop preview before making changes
        try {
            mCamera.stopPreview();

        } catch (Exception e){ Log.d("CameraPreview", "Error stoping camera preview: " + e.getMessage()); }


        try {
            //params.setFocusMode( Camera.Parameters.FOCUS_MODE_AUTO ); NAO DA SET
            Camera.Parameters params = mCamera.getParameters( );
            params.setJpegQuality( 70 );
            params.setFlashMode( Camera.Parameters.FLASH_MODE_AUTO );
            params.setSceneMode( Camera.Parameters.SCENE_MODE_AUTO );
            params.set( "orientation", "portrait" );
            params.set( "portrait", 90 );

            mCamera.setParameters( params );
            mCamera.setPreviewDisplay(mHolder);
            mCamera.startPreview();

        } catch (Exception e){
            Log.d("CameraPreview", "Error starting camera preview: " + e.getMessage());
        }
    }

    @Override
    public void onPause(){
        debug.debug("CameraPreview","onPause");

        if( mCamera != null ) {
            try {
                mCamera.stopPreview( );
            }
            catch( Exception e ) {
            }
        }
    }

    public void onDrestroy() {
        debug.debug("CameraPreview","onDrestroy");

        if( mCamera != null ) {
            try {
                mCamera.release();
            }
            catch( Exception e ) {
            }
        }
    }

    public void onResume() {
        debug.debug("CameraPreview","onResume");

        if( mCamera != null ) {
            try {
                mCamera.startPreview( );
            }
            catch( Exception e ) {
            }
        }
    }

}