Attempts to find a preview size that matches the provided width and height (which specify the dimensions of the encoded video). - Android Media

Android examples for Media:Video

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Description

Attempts to find a preview size that matches the provided width and height (which specify the dimensions of the encoded video).

Demo Code

/*//from  w  w w .  ja  va 2 s  .  c  om
 * Copyright 2014 Google Inc. All rights reserved.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
//package com.java2s;
import android.hardware.Camera;
import android.util.Log;

public class Main {
    private static final String TAG = "CameraUtils";

    /**
     * Attempts to find a preview size that matches the provided width and height (which
     * specify the dimensions of the encoded video).  If it fails to find a match it just
     * uses the default preview size for video.
     * <p/>
     * TODO: should do a best-fit match, e.g.
     * https://github.com/commonsguy/cwac-camera/blob/master/camera/src/com/commonsware/cwac/camera/CameraUtils.java
     */
    public static void choosePreviewSize(Camera.Parameters parms,
            int width, int height) {
        // We should make sure that the requested MPEG size is less than the preferred
        // size, and has the same aspect ratio.
        Camera.Size ppsfv = parms.getPreferredPreviewSizeForVideo();
        if (ppsfv != null) {
            Log.d(TAG, "Camera preferred preview size for video is "
                    + ppsfv.width + "x" + ppsfv.height);
        }

        for (Camera.Size size : parms.getSupportedPreviewSizes()) {
            Log.d(TAG, "supported: " + size.width + "x" + size.height);
        }

        for (Camera.Size size : parms.getSupportedPreviewSizes()) {
            if (size.width == width && size.height == height) {
                Log.d(TAG, "setting preview size: " + width + "x" + height);
                parms.setPreviewSize(width, height);
                return;
            }
        }

        Log.w(TAG, "Unable to set preview size to " + width + "x" + height);
        if (ppsfv != null) {
            parms.setPreviewSize(ppsfv.width, ppsfv.height);
        }
        // else use whatever the default size is
    }
}

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