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-rw-r--r--src/com/android/camera/Camera.java2
-rw-r--r--src/com/android/camera/FaceListener.java68
-rw-r--r--src/com/android/camera/Util.java12
3 files changed, 36 insertions, 46 deletions
diff --git a/src/com/android/camera/Camera.java b/src/com/android/camera/Camera.java
index 4ed9aba..2e4de8c 100644
--- a/src/com/android/camera/Camera.java
+++ b/src/com/android/camera/Camera.java
@@ -519,6 +519,8 @@ public class Camera extends ActivityBase implements View.OnClickListener,
mFaceListener = new FaceListener(this,
(ViewGroup) findViewById(R.id.frame), mDisplayOrientation);
}
+ CameraInfo info = CameraHolder.instance().getCameraInfo()[mCameraId];
+ mFaceListener.setMirror(info.facing == CameraInfo.CAMERA_FACING_FRONT);
mCameraDevice.setFaceDetectionListener(mFaceListener);
mCameraDevice.startFaceDetection();
}
diff --git a/src/com/android/camera/FaceListener.java b/src/com/android/camera/FaceListener.java
index b8ec0c1..87d9ec1 100644
--- a/src/com/android/camera/FaceListener.java
+++ b/src/com/android/camera/FaceListener.java
@@ -17,7 +17,8 @@
package com.android.camera;
import android.content.Context;
-import android.graphics.Rect;
+import android.graphics.Matrix;
+import android.graphics.RectF;
import android.hardware.Camera.Face;
import android.util.Log;
import android.view.LayoutInflater;
@@ -32,7 +33,10 @@ class FaceListener implements android.hardware.Camera.FaceDetectionListener {
private final Context mContext;
private final ViewGroup mFrame;
private int mDisplayOrientation;
+ private boolean mMirror;
private View mFaces[] = new View[MAX_NUM_FACES];
+ private Matrix mMatrix = new Matrix();
+ private RectF mRect = new RectF();
public FaceListener(Context context, ViewGroup frame, int orientation) {
mContext = context;
@@ -44,8 +48,9 @@ class FaceListener implements android.hardware.Camera.FaceDetectionListener {
public void onFaceDetection(Face[] faces, android.hardware.Camera camera) {
if (LOGV) Log.v(TAG, "Num of faces=" + faces.length);
- // Rotate the coordinates if necessary.
- if (mDisplayOrientation != 0) rotateFaces(faces);
+ // Prepare the matrix.
+ Util.prepareMatrix(mMatrix, mMirror, mDisplayOrientation, mFrame.getWidth(),
+ mFrame.getHeight());
showFaces(faces);
}
@@ -54,41 +59,15 @@ class FaceListener implements android.hardware.Camera.FaceDetectionListener {
if (LOGV) Log.v(TAG, "mDisplayOrientation=" + orientation);
}
- private void rotateFaces(Face[] faces) {
- int tmp;
- for (Face face: faces) {
- Rect rect = face.rect;
- if (LOGV) dumpRect(rect, "Original rect");
- if (mDisplayOrientation== 90) {
- tmp = rect.left;
- rect.left = rect.top; // x' = y
- rect.top = -tmp; // y' = -x
- tmp = rect.right;
- rect.right = rect.bottom;
- rect.bottom = -tmp;
- } else if (mDisplayOrientation == 180) {
- rect.left *= -1; // x' = -x
- rect.top *= -1; // y' = -y
- rect.right *= -1;
- rect.bottom *= -1;
- } else if (mDisplayOrientation == 270) {
- tmp = rect.left;
- rect.left = -rect.top; // x' = -y
- rect.top = tmp; // y' = x
- tmp = rect.right;
- rect.right = -rect.bottom;
- rect.bottom = tmp;
- }
- if (LOGV) dumpRect(rect, "Rotated rect");
- }
+ public void setMirror(boolean mirror) {
+ mMirror = mirror;
+ if (LOGV) Log.v(TAG, "mMirror=" + mirror);
}
private void showFaces(Face[] faces) {
// The range of the coordinates from the driver is -1000 to 1000.
// So the maximum length of the width or height is 2000. We need to
// convert them to UI layout size later.
- double widthRatio = mFrame.getWidth() / 2000.0;
- double heightRatio = mFrame.getHeight() / 2000.0;
for (int i = 0; i < MAX_NUM_FACES; i++) {
if (i < faces.length) {
// Inflate the view if it's not done yet.
@@ -99,22 +78,19 @@ class FaceListener implements android.hardware.Camera.FaceDetectionListener {
mFrame.addView(mFaces[i]);
}
- // Set width and height.
- Rect rect = faces[i].rect;
+ // Transform the coordinates.
+ mRect.set(faces[i].rect);
+ if (LOGV) dumpRect(mRect, "Original rect");
+ mMatrix.mapRect(mRect);
+ if (LOGV) dumpRect(mRect, "Transformed rect");
+
+ // Set width, height, and margin.
RelativeLayout.LayoutParams p =
(RelativeLayout.LayoutParams) mFaces[i].getLayoutParams();
- p.width = (int) (rect.width() * widthRatio);
- p.height = (int) (rect.height() * heightRatio);
-
- // Set margins. Add 1000 so the range is 0 to 2000.
- int left = (int) ((rect.left + 1000) * widthRatio);
- int top = (int) ((rect.top + 1000) * heightRatio);
- p.setMargins(left, top, 0, 0);
+ p.width = Math.round(mRect.width());
+ p.height = Math.round(mRect.height());
+ p.setMargins(Math.round(mRect.left), Math.round(mRect.top), 0, 0);
mFaces[i].setLayoutParams(p);
- if (LOGV) {
- Log.v(TAG, "Face w="+p.width+".h="+p.height+".margin left="+left+".top="+top);
- }
-
mFaces[i].setVisibility(View.VISIBLE);
mFaces[i].requestLayout();
} else {
@@ -123,7 +99,7 @@ class FaceListener implements android.hardware.Camera.FaceDetectionListener {
}
}
- private void dumpRect(Rect rect, String msg) {
+ private void dumpRect(RectF rect, String msg) {
Log.v(TAG, msg + "=(" + rect.left + "," + rect.top
+ "," + rect.right + "," + rect.bottom + ")");
}
diff --git a/src/com/android/camera/Util.java b/src/com/android/camera/Util.java
index 3023565..61b6aa6 100644
--- a/src/com/android/camera/Util.java
+++ b/src/com/android/camera/Util.java
@@ -489,4 +489,16 @@ public class Util {
}
}
}
+
+ public static void prepareMatrix(Matrix matrix, boolean mirror, int displayOrientation,
+ int viewWidth, int viewHeight) {
+ // Need mirror for front camera.
+ matrix.setScale(mirror ? -1 : 1, 1);
+ // This is the value for android.hardware.Camera.setDisplayOrientation.
+ matrix.postRotate(displayOrientation);
+ // Camera driver coordinates range from (-1000, -1000) to (1000, 1000).
+ // UI coordinates range from (0, 0) to (width, height).
+ matrix.postScale(viewWidth / 2000f, viewHeight / 2000f);
+ matrix.postTranslate(viewWidth / 2f, viewHeight / 2f);
+ }
}
generated by cgit v1.1 at 2024-12-24 16:30:44 +0000