/*
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* Copyright (C) 2011 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package com.android.camera;
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import android.graphics.Bitmap;
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import android.media.MediaMetadataRetriever;
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import java.io.FileDescriptor;
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public class Thumbnail {
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public static Bitmap createVideoThumbnailBitmap(FileDescriptor fd, int targetWidth) {
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return createVideoThumbnailBitmap(null, fd, targetWidth);
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}
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public static Bitmap createVideoThumbnailBitmap(String filePath, int targetWidth) {
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return createVideoThumbnailBitmap(filePath, null, targetWidth);
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}
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private static Bitmap createVideoThumbnailBitmap(String filePath, FileDescriptor fd,
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int targetWidth) {
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Bitmap bitmap = null;
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MediaMetadataRetriever retriever = new MediaMetadataRetriever();
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try {
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if (filePath != null) {
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retriever.setDataSource(filePath);
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} else {
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retriever.setDataSource(fd);
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}
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bitmap = retriever.getFrameAtTime(-1);
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} catch (IllegalArgumentException ex) {
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// Assume this is a corrupt video file
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} catch (RuntimeException ex) {
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// Assume this is a corrupt video file.
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} finally {
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try {
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retriever.release();
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} catch (RuntimeException ex) {
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// Ignore failures while cleaning up.
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}
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}
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if (bitmap == null) return null;
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// Scale down the bitmap if it is bigger than we need.
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int width = bitmap.getWidth();
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int height = bitmap.getHeight();
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if (width > targetWidth) {
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float scale = (float) targetWidth / width;
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int w = Math.round(scale * width);
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int h = Math.round(scale * height);
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bitmap = Bitmap.createScaledBitmap(bitmap, w, h, true);
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}
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return bitmap;
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}
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}
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