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/*
* Copyright (C) 2011 The Android Open Source Project
*
* 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.android.camera;
import android.graphics.Bitmap;
import android.media.MediaMetadataRetriever;
import java.io.FileDescriptor;
public class Thumbnail {
public static Bitmap createVideoThumbnailBitmap(FileDescriptor fd, int targetWidth) {
return createVideoThumbnailBitmap(null, fd, targetWidth);
}
public static Bitmap createVideoThumbnailBitmap(String filePath, int targetWidth) {
return createVideoThumbnailBitmap(filePath, null, targetWidth);
}
private static Bitmap createVideoThumbnailBitmap(String filePath, FileDescriptor fd,
int targetWidth) {
Bitmap bitmap = null;
MediaMetadataRetriever retriever = new MediaMetadataRetriever();
try {
if (filePath != null) {
retriever.setDataSource(filePath);
} else {
retriever.setDataSource(fd);
}
bitmap = retriever.getFrameAtTime(-1);
} catch (IllegalArgumentException ex) {
// Assume this is a corrupt video file
} catch (RuntimeException ex) {
// Assume this is a corrupt video file.
} finally {
try {
retriever.release();
} catch (RuntimeException ex) {
// Ignore failures while cleaning up.
}
}
if (bitmap == null) return null;
// Scale down the bitmap if it is bigger than we need.
int width = bitmap.getWidth();
int height = bitmap.getHeight();
if (width > targetWidth) {
float scale = (float) targetWidth / width;
int w = Math.round(scale * width);
int h = Math.round(scale * height);
bitmap = Bitmap.createScaledBitmap(bitmap, w, h, true);
}
return bitmap;
}
}
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