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      1 /*
      2  * Copyright (C) 2015 The Android Open Source Project
      3  *
      4  * Licensed under the Apache License, Version 2.0 (the "License");
      5  * you may not use this file except in compliance with the License.
      6  * You may obtain a copy of the License at
      7  *
      8  *      http://www.apache.org/licenses/LICENSE-2.0
      9  *
     10  * Unless required by applicable law or agreed to in writing, software
     11  * distributed under the License is distributed on an "AS IS" BASIS,
     12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     13  * See the License for the specific language governing permissions and
     14  * limitations under the License.
     15  */
     16 
     17 package com.android.camera.captureintent.resource;
     18 
     19 import com.android.camera.async.SafeCloseable;
     20 import com.android.camera.util.Size;
     21 
     22 import android.view.Surface;
     23 
     24 import javax.annotation.ParametersAreNonnullByDefault;
     25 
     26 /**
     27  * Defines an interface that any implementation of this is responsible for
     28  * retaining and releasing a {@link android.graphics.SurfaceTexture}.
     29  */
     30 @ParametersAreNonnullByDefault
     31 public interface ResourceSurfaceTexture extends SafeCloseable {
     32     /**
     33      * Creates a surface from this surface texture for preview.
     34      *
     35      * @return A {@link android.view.Surface} object.
     36      */
     37     public Surface createPreviewSurface();
     38 
     39     /**
     40      * Updates the transform matrix in {@link com.android.camera.TextureViewHelper}.
     41      */
     42     public void updatePreviewTransform();
     43 
     44     /**
     45      * Obtains the chosen preview stream size.
     46      *
     47      * @return A {@link com.android.camera.util.Size} object.
     48      */
     49     public Size getPreviewSize();
     50 
     51     /**
     52      * Changes the preview stream size.
     53      *
     54      * @param previewSize The new preview stream size.
     55      */
     56     public void setPreviewSize(Size previewSize);
     57 
     58     /**
     59      * Obtains the current view layout size for the preview.
     60      *
     61      * @return A {@link com.android.camera.util.Size} object.
     62      */
     63     public Size getPreviewLayoutSize();
     64 
     65     /**
     66      * Changes the current view layout size.
     67      *
     68      * @param previewLayoutSize The new preview view layout size.
     69      */
     70     public void setPreviewLayoutSize(Size previewLayoutSize);
     71 }
     72