Take snapshot from preview window (that's the way AI will use it)

KlubJagiellonski · Aug 17, 2017 · e76902f · e76902f
1 parent 746d80b
commit e76902f
Showing 1 changed file with 35 additions and 24 deletions.
diff --git a/app/src/main/java/pl/pola_app/helpers/OldCamera.java b/app/src/main/java/pl/pola_app/helpers/OldCamera.java
@@ -4,17 +4,20 @@
 import android.annotation.TargetApi;
 import android.graphics.Bitmap;
 import android.graphics.BitmapFactory;
+import android.graphics.ImageFormat;
+import android.graphics.Rect;
+import android.graphics.YuvImage;
 import android.hardware.Camera;
-import android.util.Log;
 import android.view.SurfaceHolder;
 
+import java.io.ByteArrayOutputStream;
 import java.io.IOException;
 import java.util.List;
 
+import timber.log.Timber;
+
 @TargetApi(21)
 public class OldCamera extends CameraCompat {
-
-    private static final int DEFAULT_MIN_PIC_SIZE = 1000;
     Camera camera;
     boolean safeToTakePicture = false;
     boolean isPreviewing = false;
@@ -27,9 +30,10 @@ public class OldCamera extends CameraCompat {
     }
 
     @Override
-    public void open(){
+    public void open() {
         camera = Camera.open();
         camera.cancelAutoFocus();
+        camera.setDisplayOrientation(90);
         final Camera.Parameters parameters = camera.getParameters();
         final List<Camera.Size> supportedPictureSizes = parameters.getSupportedPictureSizes();
         Camera.Size size = supportedPictureSizes.get(0);
@@ -42,9 +46,12 @@ public void open(){
         }
 
         parameters.setPictureSize(size.width, size.height);
+        parameters.setPreviewSize(size.width, size.height);
         parameters.setFocusMode(Camera.Parameters.FOCUS_MODE_AUTO);
+        parameters.setPreviewFormat(ImageFormat.NV21);
+        parameters.setRecordingHint(true);
+        parameters.setFocusMode(Camera.Parameters.FOCUS_MODE_CONTINUOUS_PICTURE);
         camera.setParameters(parameters);
-        camera.setDisplayOrientation(90);
     }
 
 
@@ -53,7 +60,6 @@ public void openPreview(SurfaceHolder surface) {
         try {
             camera.setPreviewDisplay(surface);
             camera.startPreview();
-            camera.autoFocus(null);
             isPreviewing = true;
             safeToTakePicture = true;
         } catch (IOException e) {
@@ -63,33 +69,38 @@ public void openPreview(SurfaceHolder surface) {
 
     @Override
     public void closePreview() {
-        camera.stopPreview();
-        camera.release();
         isPreviewing = false;
         safeToTakePicture = false;
+        camera.stopPreview();
+        camera.release();
     }
 
     @Override
     public void takePicture(OnPhotoTakenSuccessListener onPhotoTakenSuccessListener) {
         if (!safeToTakePicture) {
-            Log.e("TAG", "Skipped photo");
+            Timber.e("Skipped photo");
             return;
         }
-        camera.takePicture(null, null, (data, camera) -> {
-            safeToTakePicture = true;
-            final Camera.Parameters parameters = camera.getParameters();
-            final Camera.Size pictureSize = parameters.getPictureSize();
-            final Bitmap bitmap = FileUtils.rotateImageAndScale(BitmapFactory.decodeByteArray(data, 0, data.length), 90, maxPictureSize);
-            onPhotoTakenSuccessListener.onPhotoTakenSuccess(
-                    bitmap,
-                    pictureSize.width,
-                    pictureSize.height,
-                    bitmap.getWidth(),
-                    bitmap.getHeight()
-
-            );
-            camera.startPreview();
+        camera.setOneShotPreviewCallback((data, camera1) -> {
+            if (data != null && data.length != 0) {
+                final Camera.Parameters parameters = camera1.getParameters();
+                final Camera.Size pictureSize = parameters.getPictureSize();
+
+                ByteArrayOutputStream out = new ByteArrayOutputStream();
+                YuvImage yuvImage = new YuvImage(data, ImageFormat.NV21, pictureSize.width, pictureSize.height, null);
+                yuvImage.compressToJpeg(new Rect(0, 0, pictureSize.width, pictureSize.height), 100, out);
+                byte[] imageBytes = out.toByteArray();
+                Bitmap image = BitmapFactory.decodeByteArray(imageBytes, 0, imageBytes.length);
+                image = FileUtils.rotateImageAndScale(image, 90, maxPictureSize);
+                onPhotoTakenSuccessListener.onPhotoTakenSuccess(
+                        image,
+                        pictureSize.width,
+                        pictureSize.height,
+                        image.getWidth(),
+                        image.getHeight()
+
+                );
+            }
         });
-        safeToTakePicture = false;
     }
 }