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