获取流转化为图片

DuskSunShine · Nov 28, 2018 · e79c42f · e79c42f
1 parent 469cf0a
commit e79c42f
Show file tree

Hide file tree

Showing 12 changed files with 187 additions and 15 deletions.
diff --git a/.idea/codeStyles/Project.xml b/.idea/codeStyles/Project.xml
diff --git a/.idea/gradle.xml b/.idea/gradle.xml
diff --git a/.idea/misc.xml b/.idea/misc.xml
diff --git a/.idea/runConfigurations.xml b/.idea/runConfigurations.xml
diff --git a/.idea/vcs.xml b/.idea/vcs.xml
diff --git a/app/src/main/java/com/scy/cameralib/CameraActivity.java b/app/src/main/java/com/scy/cameralib/CameraActivity.java
@@ -6,6 +6,7 @@
 import android.graphics.Bitmap;
 import android.graphics.BitmapFactory;
 import android.graphics.ImageFormat;
+import android.graphics.Matrix;
 import android.graphics.Rect;
 import android.graphics.YuvImage;
 import android.hardware.Camera;
@@ -32,7 +33,7 @@ public  class CameraActivity extends Activity implements SurfaceHolder.Callback
     private Camera camera;
     ImageView image;
     ImageView image2;
-    ViewfinderView maskView;
+    RectViewfinderView maskView;
     @Override
     protected void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
@@ -71,9 +72,13 @@ protected void onResume() {
         cameraManager.setOnPreviewFrameListener(new CameraManager.OnPreviewFrameListener() {
             @Override
             public void onPreviewFrame(byte[] data, Camera camera) {
+
+                PlanarYUVLuminanceSource source = cameraManager
+                        .buildLuminanceSource(data, cameraManager.getCameraResolution().x, cameraManager.getCameraResolution().y);
+                bundleThumbnail(source);
                 //这里byte数据即是实时获取的帧数据 只要相机正在预览就会一直回调此方法
                 //需要注意的是 这里的byte数据不能够直接使用 需要转换下格式
-                Bitmap bmp = null;
+                /*Bitmap bmp = null;
                 try {
                     YuvImage image = new YuvImage(data, ImageFormat.NV21, 480, 640, null);
                     if (image != null) {
@@ -85,7 +90,7 @@ public void onPreviewFrame(byte[] data, Camera camera) {
                     }
                 } catch (Exception ex) {
                     Log.e("Sys", "Error:" + ex.getMessage());
-                }
+                }*/
             }
         });
         image2.setOnClickListener(new View.OnClickListener() {
@@ -99,11 +104,27 @@ public void onClick(View v) {
             @Override
             public void onTakePhoto(String path) {
                 Log.i(TAG,path);
-                Bitmap bitmap = BitmapFactory.decodeFile(path);
-                image2.setImageBitmap(bitmap);
             }
         });
     }
+
+    private  void bundleThumbnail(PlanarYUVLuminanceSource source) {
+        int[] pixels = source.renderThumbnail();
+        int width = source.getThumbnailWidth();
+        int height = source.getThumbnailHeight();
+        Bitmap bitmap = Bitmap.createBitmap(pixels, 0, width, width, height, Bitmap.Config.ARGB_8888);
+        Matrix matrix = new Matrix();
+        matrix.preRotate(90);
+        bitmap=Bitmap.createBitmap(bitmap,0, 0, bitmap.getWidth(), bitmap.getHeight(), matrix, false);
+        ByteArrayOutputStream out = new ByteArrayOutputStream();
+        bitmap.compress(Bitmap.CompressFormat.JPEG, 80, out);
+        bitmap = bitmap.copy(Bitmap.Config.ARGB_8888, true);
+
+
+        // Mutable copy:
+        //barcode = barcode.copy(Bitmap.Config.ARGB_8888, true);
+        CameraActivity.this.image.setImageBitmap(bitmap);
+    }
     @Override
     protected void onPause() {
         cameraManager.stopPreview();

diff --git a/app/src/main/java/com/scy/cameralib/CameraManager.java b/app/src/main/java/com/scy/cameralib/CameraManager.java
@@ -64,6 +64,10 @@ public void setOpenAutoFocus(boolean openAutoFocus) {
         this.openAutoFocus = openAutoFocus;
     }
 
+    public Point getCameraResolution() {
+        return cameraResolution;
+    }
+
     private CameraManager() {
     }
 
@@ -275,6 +279,9 @@ public synchronized boolean isOpen() {
         return mCamera != null;
     }
 
+    public Point getPreviewSizeOnScreen() {
+        return previewSizeOnScreen;
+    }
 
     /**
      * 设置期望的相机参数
@@ -431,12 +438,15 @@ public synchronized Rect getFramingRect() {
                 return null;
             }
 
-            int width = findDesiredDimensionInRange(screenResolution.x, MIN_FRAME_WIDTH, MAX_FRAME_WIDTH);
+           /* int width = findDesiredDimensionInRange(screenResolution.x, MIN_FRAME_WIDTH, MAX_FRAME_WIDTH);
             int height = findDesiredDimensionInRange(screenResolution.y, MIN_FRAME_HEIGHT, MAX_FRAME_HEIGHT);
 
             int leftOffset = (screenResolution.x - width) / 2;
             int topOffset = (screenResolution.y - height) / 2;
-            framingRect = new Rect(leftOffset, topOffset, leftOffset + width, topOffset + height);
+            framingRect = new Rect(leftOffset, topOffset, leftOffset + width, topOffset + height);*/
+            int leftOffset = (screenResolution.x ) / 2;
+            int topOffset = (screenResolution.y ) / 2;
+            framingRect = new Rect(leftOffset-200, topOffset-200, leftOffset + 200, topOffset + 200);
             Log.d(TAG, "Calculated framing rect: " + framingRect);
         }
         return framingRect;

diff --git a/app/src/main/java/com/scy/cameralib/CameraSurfaceView.java b/app/src/main/java/com/scy/cameralib/CameraSurfaceView.java
@@ -4,9 +4,12 @@
 import android.graphics.Bitmap;
 import android.graphics.BitmapFactory;
 import android.graphics.Matrix;
+import android.graphics.Point;
+import android.graphics.Rect;
 import android.hardware.Camera;
 import android.os.Environment;
 import android.util.AttributeSet;
+import android.util.Log;
 import android.view.SurfaceView;
 import java.io.BufferedOutputStream;
 import java.io.File;
@@ -24,6 +27,7 @@ public class CameraSurfaceView extends SurfaceView {
     private String fileDir="CameraLib";//dir name
     private OnTakePhotoListener onTakePhotoListener;
     private CameraManager cameraManager;
+    private Rect framingRect;
 
 
     public String getFileDir() {
@@ -105,6 +109,7 @@ public void keepTakePicture() {
      */
     public void takePicture() {
         if (cameraManager!=null) {
+            framingRect = cameraManager.getFramingRect();
             if (cameraManager.getCamera()!=null) {
                 cameraManager.getCamera().takePicture(null, null, pictureCallback);
             }
@@ -124,16 +129,32 @@ public void onPictureTaken(final byte[] data, Camera Camera) {
                 public void run() {
                     BufferedOutputStream bos = null;
                     Bitmap bm = null;
+                    Bitmap rectBitmap=null;
                     try {
                         BitmapFactory.Options newOpts = new BitmapFactory.Options();
                         newOpts.inPreferredConfig = Bitmap.Config.RGB_565;
                         bm = BitmapFactory.decodeByteArray(data, 0, data.length, newOpts);
                         Matrix matrix = new Matrix();
                         matrix.preRotate(90);
                         bm = Bitmap.createBitmap(bm, 0, 0, bm.getWidth(), bm.getHeight(), matrix, false);
-
+                        Log.i("拍照原始尺寸",bm.getWidth()+","+bm.getHeight());
+                        //旋转后rotaBitmap是960×1280.预览surfaview的大小是540×800
+                        //将960×1280缩放到540×800
+                        int width=framingRect.right-framingRect.left;
+                        int  height=framingRect.bottom-framingRect.top;
+                        Point bestPreviewSize = cameraManager.getPreviewSizeOnScreen();
+                        Bitmap sizeBitmap = Bitmap.createScaledBitmap(bm, bestPreviewSize.x, bestPreviewSize.y, true);
+                        Log.i("拍照缩放到surface大小",sizeBitmap.getWidth()+","+sizeBitmap.getHeight());
+                        Log.i("矩形取景框区域",framingRect.toString());
+                        if (framingRect.left+width>sizeBitmap.getWidth()){
+                            width=sizeBitmap.getWidth();
+                        }
+                        if (framingRect.top+height>sizeBitmap.getHeight()){
+                            height=sizeBitmap.getHeight();
+                        }
+                        rectBitmap = Bitmap.createBitmap(sizeBitmap, framingRect.left, framingRect.top, width, height);//截取
                         bos = new BufferedOutputStream(new FileOutputStream(picFile));
-                        bm.compress(Bitmap.CompressFormat.JPEG, 100, bos);
+                        rectBitmap.compress(Bitmap.CompressFormat.JPEG, 80, bos);
                     } catch (Exception e) {
                         e.printStackTrace();
                     } finally {
@@ -142,9 +163,9 @@ public void run() {
                                 bos.flush();
                                 bos.close();
                             }
-                            if (bm != null) {
-                                bm.recycle();
-                            }
+                           if (rectBitmap!=null){
+                                rectBitmap.recycle();
+                           }
                             new MediaScanner(getContext()).scanFile(RootFilePath(), "image/*");
                         } catch (IOException e) {
                             e.printStackTrace();

diff --git a/...ava/com/scy/cameralib/ViewfinderView.java → ...com/scy/cameralib/RectViewfinderView.java b/...ava/com/scy/cameralib/ViewfinderView.java → ...com/scy/cameralib/RectViewfinderView.java
@@ -18,7 +18,7 @@
  *
  * @author dswitkin@google.com (Daniel Switkin)
  */
-public final class ViewfinderView extends View {
+public final class RectViewfinderView extends View {
 
   private static final int[] SCANNER_ALPHA = {0, 64, 128, 192, 255, 192, 128, 64};
   private static final int CURRENT_POINT_OPACITY = 0xA0;
@@ -30,7 +30,7 @@ public final class ViewfinderView extends View {
   private int scannerAlpha;
 
   // This constructor is used when the class is built from an XML resource.
-  public ViewfinderView(Context context, AttributeSet attrs) {
+  public RectViewfinderView(Context context, AttributeSet attrs) {
     super(context, attrs);
 
     // Initialize these once for performance rather than calling them every time in onDraw().

diff --git a/app/src/main/java/com/scy/cameralib/camera/CameraConfig.java b/app/src/main/java/com/scy/cameralib/camera/CameraConfig.java
@@ -0,0 +1,9 @@
+package com.scy.cameralib.camera;
+
+/**
+ * Created by SCY on 2018/11/28 at 17:32.
+ */
+public interface CameraConfig {
+
+
+}
diff --git a/app/src/main/java/com/scy/cameralib/camera/CameraManager.java b/app/src/main/java/com/scy/cameralib/camera/CameraManager.java
@@ -0,0 +1,8 @@
+package com.scy.cameralib.camera;
+
+/**
+ * Created by SCY on 2018/11/28 at 17:33.
+ */
+public class CameraManager {
+
+}
diff --git a/app/src/main/res/layout/activity_main.xml b/app/src/main/res/layout/activity_main.xml
@@ -10,7 +10,7 @@
        android:id="@+id/surface"
        android:layout_width="match_parent"
        android:layout_height="match_parent" />
-   <com.scy.cameralib.ViewfinderView
+   <com.scy.cameralib.RectViewfinderView
        android:id="@+id/maskView"
        android:layout_width="match_parent"
        android:layout_height="match_parent" />