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 package com.android.messaging.util; 17 18 import android.content.ContentResolver; 19 import android.content.res.AssetFileDescriptor; 20 import android.graphics.Bitmap; 21 import android.media.MediaMetadataRetriever; 22 import android.net.Uri; 23 import android.text.TextUtils; 24 25 import com.android.messaging.Factory; 26 27 import java.io.IOException; 28 29 /** 30 * Convenience wrapper for {@link MediaMetadataRetriever} to help with its eccentric error handling. 31 */ 32 public class MediaMetadataRetrieverWrapper { 33 private final MediaMetadataRetriever mRetriever = new MediaMetadataRetriever(); 34 MediaMetadataRetrieverWrapper()35 public MediaMetadataRetrieverWrapper() { 36 } 37 setDataSource(Uri uri)38 public void setDataSource(Uri uri) throws IOException { 39 ContentResolver resolver = Factory.get().getApplicationContext().getContentResolver(); 40 AssetFileDescriptor fd = resolver.openAssetFileDescriptor(uri, "r"); 41 if (fd == null) { 42 throw new IOException("openAssetFileDescriptor returned null for " + uri); 43 } 44 try { 45 mRetriever.setDataSource(fd.getFileDescriptor()); 46 } catch (RuntimeException e) { 47 release(); 48 throw new IOException(e); 49 } finally { 50 fd.close(); 51 } 52 } 53 extractInteger(final int key, final int defaultValue)54 public int extractInteger(final int key, final int defaultValue) { 55 final String s = mRetriever.extractMetadata(key); 56 if (TextUtils.isEmpty(s)) { 57 return defaultValue; 58 } 59 return Integer.parseInt(s); 60 } 61 extractMetadata(final int key)62 public String extractMetadata(final int key) { 63 return mRetriever.extractMetadata(key); 64 } 65 getFrameAtTime()66 public Bitmap getFrameAtTime() { 67 return mRetriever.getFrameAtTime(); 68 } 69 getFrameAtTime(final long timeUs)70 public Bitmap getFrameAtTime(final long timeUs) { 71 return mRetriever.getFrameAtTime(timeUs); 72 } 73 release()74 public void release() { 75 try { 76 mRetriever.release(); 77 } catch (RuntimeException | IOException e) { 78 LogUtil.e(LogUtil.BUGLE_TAG, "MediaMetadataRetriever.release failed", e); 79 } 80 } 81 } 82