1 /* 2 * Copyright (C) 2016 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.google.android.exoplayer; 17 18 import android.support.annotation.Nullable; 19 import com.google.android.exoplayer.util.MimeTypes; 20 import java.nio.ByteBuffer; 21 import java.util.ArrayList; 22 23 /** {@link MediaFormat} creation helper util */ 24 public class MediaFormatUtil { 25 26 /** 27 * Creates {@link MediaFormat} from {@link android.media.MediaFormat}. Since {@link 28 * com.google.android.exoplayer.TrackRenderer} uses {@link MediaFormat}, {@link 29 * android.media.MediaFormat} should be converted to be used with ExoPlayer. 30 */ createMediaFormat(android.media.MediaFormat format)31 public static MediaFormat createMediaFormat(android.media.MediaFormat format) { 32 String mimeType = format.getString(android.media.MediaFormat.KEY_MIME); 33 String language = getOptionalStringV16(format, android.media.MediaFormat.KEY_LANGUAGE); 34 int maxInputSize = 35 getOptionalIntegerV16(format, android.media.MediaFormat.KEY_MAX_INPUT_SIZE); 36 int width = getOptionalIntegerV16(format, android.media.MediaFormat.KEY_WIDTH); 37 int height = getOptionalIntegerV16(format, android.media.MediaFormat.KEY_HEIGHT); 38 int rotationDegrees = getOptionalIntegerV16(format, "rotation-degrees"); 39 int channelCount = 40 getOptionalIntegerV16(format, android.media.MediaFormat.KEY_CHANNEL_COUNT); 41 int sampleRate = getOptionalIntegerV16(format, android.media.MediaFormat.KEY_SAMPLE_RATE); 42 int encoderDelay = getOptionalIntegerV16(format, "encoder-delay"); 43 int encoderPadding = getOptionalIntegerV16(format, "encoder-padding"); 44 ArrayList<byte[]> initializationData = new ArrayList<>(); 45 for (int i = 0; format.containsKey("csd-" + i); i++) { 46 ByteBuffer buffer = format.getByteBuffer("csd-" + i); 47 byte[] data = new byte[buffer.limit()]; 48 buffer.get(data); 49 initializationData.add(data); 50 buffer.flip(); 51 } 52 long durationUs = 53 format.containsKey(android.media.MediaFormat.KEY_DURATION) 54 ? format.getLong(android.media.MediaFormat.KEY_DURATION) 55 : C.UNKNOWN_TIME_US; 56 int pcmEncoding = 57 MimeTypes.AUDIO_RAW.equals(mimeType) ? C.ENCODING_PCM_16BIT : MediaFormat.NO_VALUE; 58 MediaFormat mediaFormat = 59 new MediaFormat( 60 null, // trackId 61 mimeType, 62 MediaFormat.NO_VALUE, 63 maxInputSize, 64 durationUs, 65 width, 66 height, 67 rotationDegrees, 68 MediaFormat.NO_VALUE, 69 channelCount, 70 sampleRate, 71 language, 72 MediaFormat.OFFSET_SAMPLE_RELATIVE, 73 initializationData, 74 false, 75 MediaFormat.NO_VALUE, 76 MediaFormat.NO_VALUE, 77 pcmEncoding, 78 encoderDelay, 79 encoderPadding, 80 null, // projectionData 81 MediaFormat.NO_VALUE, 82 null // colorValue 83 ); 84 mediaFormat.setFrameworkFormatV16(format); 85 return mediaFormat; 86 } 87 88 @Nullable getOptionalStringV16(android.media.MediaFormat format, String key)89 private static String getOptionalStringV16(android.media.MediaFormat format, String key) { 90 return format.containsKey(key) ? format.getString(key) : null; 91 } 92 getOptionalIntegerV16(android.media.MediaFormat format, String key)93 private static int getOptionalIntegerV16(android.media.MediaFormat format, String key) { 94 return format.containsKey(key) ? format.getInteger(key) : MediaFormat.NO_VALUE; 95 } 96 } 97