| /* |
| * Copyright 2018 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 androidx.widget; |
| |
| import android.content.Context; |
| import android.content.res.AssetFileDescriptor; |
| import android.media.MediaCodecList; |
| import android.media.MediaExtractor; |
| import android.media.MediaFormat; |
| import android.util.Log; |
| |
| import java.io.IOException; |
| |
| // Borrowed from com.android.compatibility.common.util.MediaUtils |
| class MediaUtils2 { |
| private static final String TAG = "MediaUtils2"; |
| private static final MediaCodecList sMCL = new MediaCodecList(MediaCodecList.REGULAR_CODECS); |
| |
| /** |
| * Returns true iff all audio and video tracks are supported |
| */ |
| static boolean hasCodecsForResource(Context context, int resourceId) { |
| try { |
| AssetFileDescriptor afd = null; |
| MediaExtractor ex = null; |
| try { |
| afd = context.getResources().openRawResourceFd(resourceId); |
| ex = new MediaExtractor(); |
| ex.setDataSource(afd.getFileDescriptor(), afd.getStartOffset(), afd.getLength()); |
| return hasCodecsForMedia(ex); |
| } finally { |
| if (ex != null) { |
| ex.release(); |
| } |
| if (afd != null) { |
| afd.close(); |
| } |
| } |
| } catch (IOException e) { |
| Log.i(TAG, "could not open resource"); |
| } |
| return false; |
| } |
| |
| /** |
| * Returns true iff all audio and video tracks are supported |
| */ |
| static boolean hasCodecsForMedia(MediaExtractor ex) { |
| for (int i = 0; i < ex.getTrackCount(); ++i) { |
| MediaFormat format = ex.getTrackFormat(i); |
| // only check for audio and video codecs |
| String mime = format.getString(MediaFormat.KEY_MIME).toLowerCase(); |
| if (!mime.startsWith("audio/") && !mime.startsWith("video/")) { |
| continue; |
| } |
| if (!canDecode(format)) { |
| return false; |
| } |
| } |
| return true; |
| } |
| |
| static boolean canDecode(MediaFormat format) { |
| if (sMCL.findDecoderForFormat(format) == null) { |
| Log.i(TAG, "no decoder for " + format); |
| return false; |
| } |
| return true; |
| } |
| } |