Fixed serious bugs. Option to have WRAP_CONTENT to both dimensions

camerakit/src/main/api16/com/flurgle/camerakit/Camera1.java

@@ -48,6 +48,7 @@ class Camera1 extends CameraImpl {
 
     private int mDisplayOffset;
     private int mDeviceOrientation;
+    private int mSensorOffset;
 
     @Facing private int mFacing;
     @Flash private int mFlash;
@@ -130,6 +131,7 @@ class Camera1 extends CameraImpl {
         for (int i = 0, count = Camera.getNumberOfCameras(); i < count; i++) {
             Camera.getCameraInfo(i, mCameraInfo);
             if (mCameraInfo.facing == internalFacing) {
+                mSensorOffset = mCameraInfo.orientation;
                 mCameraId = i;
                 mFacing = facing;
                 break;
@@ -291,6 +293,11 @@ class Camera1 extends CameraImpl {
         return mPreviewSize;
     }
 
+    @Override
+    boolean shouldFlipSizes() {
+        return mSensorOffset % 180 != 0;
+    }
+
     @Override
     boolean isCameraOpened() {
         return mCamera != null;
@@ -337,9 +344,9 @@ class Camera1 extends CameraImpl {
     private int computeCameraToDisplayOffset() {
         if (mCameraInfo.facing == Camera.CameraInfo.CAMERA_FACING_FRONT) {
             // or: (360 - ((info.orientation + displayOrientation) % 360)) % 360;
-            return ((mCameraInfo.orientation - mDisplayOffset) + 360 + 180) % 360;
+            return ((mSensorOffset - mDisplayOffset) + 360 + 180) % 360;
         } else {
-            return (mCameraInfo.orientation - mDisplayOffset + 360) % 360;
+            return (mSensorOffset - mDisplayOffset + 360) % 360;
         }
     }
 
@@ -348,7 +355,7 @@ class Camera1 extends CameraImpl {
      * the camera APIs as long as you call {@link Camera.Parameters#setRotation(int)}.
      */
     private int computeExifOrientation() {
-        return (mDeviceOrientation + mCameraInfo.orientation) % 360;
+        return (mDeviceOrientation + mSensorOffset) % 360;
     }
 
     private int calculateCaptureRotation() {
@@ -388,7 +395,7 @@ class Camera1 extends CameraImpl {
 
 
     private void adjustCameraParameters() {
-        boolean invertPreviewSizes = mDisplayOffset % 180 != 0;
+        boolean invertPreviewSizes = shouldFlipSizes(); // mDisplayOffset % 180 != 0;
         mPreview.setDesiredSize(
                 invertPreviewSizes ? getPreviewSize().getHeight() : getPreviewSize().getWidth(),
                 invertPreviewSizes ? getPreviewSize().getWidth() : getPreviewSize().getHeight()

camerakit/src/main/api21/com/flurgle/camerakit/Camera2.java

@@ -231,6 +231,11 @@ class Camera2 extends CameraImpl {
         return mPreviewSize;
     }
 
+    @Override
+    boolean shouldFlipSizes() {
+        return false;
+    }
+
     @Override
     boolean isCameraOpened() {
         return mCamera != null;

camerakit/src/main/base/com/flurgle/camerakit/CameraImpl.java

@@ -31,6 +31,7 @@ abstract class CameraImpl {
 
     abstract Size getCaptureSize();
     abstract Size getPreviewSize();
+    abstract boolean shouldFlipSizes(); // Wheter the Sizes should be flipped to match the view orientation.
     abstract boolean isCameraOpened();
 
     @Nullable

camerakit/src/main/base/com/flurgle/camerakit/PreviewImpl.java

@@ -1,6 +1,7 @@
 package com.flurgle.camerakit;
 
 import android.graphics.SurfaceTexture;
+import android.util.Log;
 import android.view.Surface;
 import android.view.SurfaceHolder;
 import android.view.View;
@@ -14,6 +15,7 @@ abstract class PreviewImpl {
     private OnSurfaceChangedCallback mOnSurfaceChangedCallback;
 
     // As far as I can see, these are the view/surface dimensions.
+    // This live in the 'View' orientation.
     private int mSurfaceWidth;
     private int mSurfaceHeight;
 
@@ -49,7 +51,8 @@ abstract class PreviewImpl {
     }
 
     // As far as I can see, these are the view/surface dimensions.
-    // This is called by subclasses.
+    // This is called by subclasses. 1080, 1794 -- 1080, 1440
+
     protected void setSurfaceSize(int width, int height) {
         this.mSurfaceWidth = width;
         this.mSurfaceHeight = height;
@@ -57,7 +60,7 @@ abstract class PreviewImpl {
     }
 
     // As far as I can see, these are the actual preview dimensions, as set in CameraParameters.
-    // This is called by the CameraImpl.
+    // This is called by the CameraImpl. 1200, 1600
     void setDesiredSize(int width, int height) {
         this.mDesiredWidth = width;
         this.mDesiredHeight = height;
@@ -73,26 +76,24 @@ abstract class PreviewImpl {
      * to match the desired aspect ratio.
      * This means that the external part of the surface will be cropped by the outer view.
      */
-    protected void refreshScale() {
+    private void refreshScale() {
         getView().post(new Runnable() {
             @Override
             public void run() {
                 if (mDesiredWidth != 0 && mDesiredHeight != 0) {
                     AspectRatio aspectRatio = AspectRatio.of(mDesiredWidth, mDesiredHeight);
-                    int targetHeight = (int) (getView().getWidth() * aspectRatio.toFloat());
-                    float scaleY;
-                    if (getView().getHeight() > 0) {
-                        scaleY = (float) targetHeight / (float) getView().getHeight();
-                    } else {
-                        scaleY = 1;
+                    float targetHeight = (float) mSurfaceWidth / aspectRatio.toFloat();
+                    float scale = 1;
+                    if (mSurfaceHeight > 0) {
+                        scale = targetHeight / (float) mSurfaceHeight;
                     }
 
-                    if (scaleY > 1) {
-                        getView().setScaleX(1);
-                        getView().setScaleY(scaleY);
+                    if (scale > 1) {
+                        getView().setScaleX(1f);
+                        getView().setScaleY(scale);
                     } else {
-                        getView().setScaleX(1 / scaleY);
-                        getView().setScaleY(1);
+                        getView().setScaleX(1f / scale);
+                        getView().setScaleY(1f);
                     }
                 }
             }

camerakit/src/main/base/com/flurgle/camerakit/TextureViewPreview.java

@@ -14,7 +14,7 @@ class TextureViewPreview extends PreviewImpl {
     private final TextureView mTextureView;
 
     TextureViewPreview(Context context, ViewGroup parent) {
-        final View view = View.inflate(context, R.layout.texture_view, parent);
+        final View view = View.inflate(context, R.layout.texture_view, parent); // MATCH_PARENT
         mTextureView = (TextureView) view.findViewById(R.id.texture_view);
         mTextureView.setSurfaceTextureListener(new TextureView.SurfaceTextureListener() {
 
@@ -28,7 +28,7 @@ class TextureViewPreview extends PreviewImpl {
             public void onSurfaceTextureSizeChanged(SurfaceTexture surface, int width, int height) {
                 setSurfaceSize(width, height);
                 dispatchSurfaceChanged();
-                refreshScale();
+                // refreshScale();
             }
 
             @Override

camerakit/src/main/java/com/flurgle/camerakit/CameraView.java

@@ -11,8 +11,10 @@ import android.content.ContextWrapper;
 import android.content.pm.PackageInfo;
 import android.content.pm.PackageManager;
 import android.content.res.TypedArray;
+import android.graphics.Color;
 import android.graphics.Rect;
 import android.graphics.YuvImage;
+import android.graphics.drawable.ColorDrawable;
 import android.os.Handler;
 import android.os.HandlerThread;
 import android.support.annotation.NonNull;
@@ -24,6 +26,7 @@ import android.util.Log;
 import android.view.Display;
 import android.view.MotionEvent;
 import android.view.View;
+import android.view.ViewGroup;
 import android.view.WindowManager;
 import android.widget.FrameLayout;
 
@@ -174,9 +177,7 @@ public class CameraView extends FrameLayout implements LifecycleObserver {
     @Override
     protected void onAttachedToWindow() {
         super.onAttachedToWindow();
-        Log.e(TAG, "onAttachedToWindow");
         if (!isInEditMode()) {
-            Log.e(TAG, "onAttachedToWindow: enabling orientation detector.");
             WindowManager manager = (WindowManager) getContext().getSystemService(Context.WINDOW_SERVICE);
             Display display = manager.getDefaultDisplay();
             mOrientationHelper.enable(display);
@@ -185,9 +186,7 @@ public class CameraView extends FrameLayout implements LifecycleObserver {
 
     @Override
     protected void onDetachedFromWindow() {
-        Log.e(TAG, "onDetachedFromWindow");
         if (!isInEditMode()) {
-            Log.e(TAG, "onDetachedFromWindow: disabling orientation detector.");
             mOrientationHelper.disable();
         }
         super.onDetachedFromWindow();
@@ -215,20 +214,55 @@ public class CameraView extends FrameLayout implements LifecycleObserver {
 
         Size previewSize = getPreviewSize();
         if (previewSize == null) {
+            // Early measure.
             super.onMeasure(widthMeasureSpec, heightMeasureSpec);
             return;
         }
 
-        if (getLayoutParams().width == LayoutParams.WRAP_CONTENT) {
-            int height = MeasureSpec.getSize(heightMeasureSpec);
-            float ratio = (float) height / (float) previewSize.getWidth();
-            int width = (int) (previewSize.getHeight() * ratio);
+        boolean wwc = getLayoutParams().width == ViewGroup.LayoutParams.WRAP_CONTENT;
+        boolean hwc = getLayoutParams().height == ViewGroup.LayoutParams.WRAP_CONTENT;
+        boolean flip = mCameraImpl.shouldFlipSizes();
+        float previewWidth = flip ? previewSize.getHeight() : previewSize.getWidth();
+        float previewHeight = flip ? previewSize.getWidth() : previewSize.getHeight();
+
+        if (wwc && hwc) {
+            // If both dimensions are WRAP_CONTENT, let's try to fit the preview size perfectly
+            // without cropping.
+            // TODO: This should actually be a flag, like scaleMode, that replaces cropOutput and adjustViewBounds.
+            // This is like a fitCenter.
+
+            // preview: 1600x1200
+            // parent:  1080x1794
+            float parentHeight = MeasureSpec.getSize(heightMeasureSpec); // 1794.
+            float parentWidth = MeasureSpec.getSize(widthMeasureSpec); //   1080. mode = AT_MOST
+            float targetRatio = previewHeight / previewWidth;
+            float currentRatio = parentHeight / parentWidth;
+            Log.e(TAG, "parentHeight="+parentHeight+", parentWidth="+parentWidth);
+            Log.e(TAG, "previewHeight="+previewHeight+", previewWidth="+previewWidth);
+            if (currentRatio > targetRatio) {
+                // View is too tall. Must reduce height.
+                int newHeight = (int) (parentWidth * targetRatio);
+                super.onMeasure(widthMeasureSpec, MeasureSpec.makeMeasureSpec(newHeight, MeasureSpec.EXACTLY));
+            } else {
+                // View is too wide. Must reduce width.
+                int newWidth = (int) (parentHeight / targetRatio);
+                super.onMeasure(MeasureSpec.makeMeasureSpec(newWidth, MeasureSpec.EXACTLY), heightMeasureSpec);
+            }
+
+        } else if (wwc) {
+            // Legacy behavior, with just a WC dimension. This is dangerous because the final size
+            // might be bigger than the available size, resulting in part of the surface getting cropped.
+            // Think for example of a 4:3 preview in a 16:9 screen, with width=MP and height=WC.
+            // This is like a cropCenter.
+            float height = MeasureSpec.getSize(heightMeasureSpec);
+            float ratio = height / previewWidth;
+            int width = (int) (previewHeight * ratio);
             super.onMeasure(MeasureSpec.makeMeasureSpec(width, MeasureSpec.EXACTLY), heightMeasureSpec);
 
-        } else if (getLayoutParams().height == LayoutParams.WRAP_CONTENT) {
-            int width = MeasureSpec.getSize(widthMeasureSpec);
-            float ratio = (float) width / (float) previewSize.getHeight();
-            int height = (int) (previewSize.getWidth() * ratio);
+        } else if (hwc) {
+            float width = MeasureSpec.getSize(widthMeasureSpec);
+            float ratio = width / previewHeight;
+            int height = (int) (previewWidth * ratio);
             super.onMeasure(widthMeasureSpec, MeasureSpec.makeMeasureSpec(height, MeasureSpec.EXACTLY));
 
         } else {
@@ -446,12 +480,18 @@ public class CameraView extends FrameLayout implements LifecycleObserver {
     /**
      * Returns the size used for the preview,
      * or null if it hasn't been computed (for example if the surface is not ready).
+     * @return a Size
      */
     @Nullable
     public Size getPreviewSize() {
         return mCameraImpl != null ? mCameraImpl.getPreviewSize() : null;
     }
 
+    /**
+     * Returns the size used for the capture,
+     * or null if it hasn't been computed yet (for example if the surface is not ready).
+     * @return a Size
+     */
     @Nullable
     public Size getCaptureSize() {
         return mCameraImpl != null ? mCameraImpl.getCaptureSize() : null;