| /* |
| * Copyright (C) 2016 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 com.google.android.exoplayer; |
| |
| import android.support.annotation.Nullable; |
| |
| import java.nio.ByteBuffer; |
| import java.util.ArrayList; |
| |
| /** {@link MediaFormat} creation helper util */ |
| public class MediaFormatUtil { |
| |
| /** |
| * Creates {@link MediaFormat} from {@link android.media.MediaFormat}. |
| * Since {@link com.google.android.exoplayer.TrackRenderer} uses {@link MediaFormat}, |
| * {@link android.media.MediaFormat} should be converted to be used with ExoPlayer. |
| */ |
| public static MediaFormat createMediaFormat(android.media.MediaFormat format) { |
| // TODO: Add test for this method. |
| String mimeType = format.getString(android.media.MediaFormat.KEY_MIME); |
| String language = getOptionalStringV16(format, android.media.MediaFormat.KEY_LANGUAGE); |
| int maxInputSize = |
| getOptionalIntegerV16(format, android.media.MediaFormat.KEY_MAX_INPUT_SIZE); |
| int width = getOptionalIntegerV16(format, android.media.MediaFormat.KEY_WIDTH); |
| int height = getOptionalIntegerV16(format, android.media.MediaFormat.KEY_HEIGHT); |
| int rotationDegrees = getOptionalIntegerV16(format, "rotation-degrees"); |
| int channelCount = |
| getOptionalIntegerV16(format, android.media.MediaFormat.KEY_CHANNEL_COUNT); |
| int sampleRate = getOptionalIntegerV16(format, android.media.MediaFormat.KEY_SAMPLE_RATE); |
| int encoderDelay = getOptionalIntegerV16(format, "encoder-delay"); |
| int encoderPadding = getOptionalIntegerV16(format, "encoder-padding"); |
| ArrayList<byte[]> initializationData = new ArrayList<>(); |
| for (int i = 0; format.containsKey("csd-" + i); i++) { |
| ByteBuffer buffer = format.getByteBuffer("csd-" + i); |
| byte[] data = new byte[buffer.limit()]; |
| buffer.get(data); |
| initializationData.add(data); |
| buffer.flip(); |
| } |
| long durationUs = format.containsKey(android.media.MediaFormat.KEY_DURATION) |
| ? format.getLong(android.media.MediaFormat.KEY_DURATION) : C.UNKNOWN_TIME_US; |
| MediaFormat mediaFormat = new MediaFormat(null, mimeType, MediaFormat.NO_VALUE, |
| maxInputSize, durationUs, width, height, rotationDegrees, MediaFormat.NO_VALUE, |
| channelCount, sampleRate, language, MediaFormat.OFFSET_SAMPLE_RELATIVE, |
| initializationData, false, MediaFormat.NO_VALUE, MediaFormat.NO_VALUE, encoderDelay, |
| encoderPadding); |
| mediaFormat.setFrameworkFormatV16(format); |
| return mediaFormat; |
| } |
| |
| /** |
| * Creates {@link MediaFormat} for audio track. |
| */ |
| public static MediaFormat createAudioMediaFormat(String mimeType, long durationUs, |
| int channelCount, int sampleRate) { |
| return MediaFormat.createAudioFormat(null, mimeType, MediaFormat.NO_VALUE, |
| MediaFormat.NO_VALUE, durationUs, channelCount, sampleRate, null, ""); |
| } |
| |
| /** |
| * Creates {@link MediaFormat} for closed caption track. |
| */ |
| public static MediaFormat createTextMediaFormat(String mimeType, long durationUs) { |
| return new MediaFormat(null, mimeType, 0, MediaFormat.NO_VALUE, durationUs, |
| MediaFormat.NO_VALUE, MediaFormat.NO_VALUE, MediaFormat.NO_VALUE, |
| MediaFormat.NO_VALUE, MediaFormat.NO_VALUE, MediaFormat.NO_VALUE, "", |
| MediaFormat.OFFSET_SAMPLE_RELATIVE, null, false, MediaFormat.NO_VALUE, |
| MediaFormat.NO_VALUE, MediaFormat.NO_VALUE, MediaFormat.NO_VALUE); |
| } |
| |
| @Nullable |
| private static final String getOptionalStringV16(android.media.MediaFormat format, String key) { |
| return format.containsKey(key) ? format.getString(key) : null; |
| } |
| |
| private static final int getOptionalIntegerV16(android.media.MediaFormat format, String key) { |
| return format.containsKey(key) ? format.getInteger(key) : MediaFormat.NO_VALUE; |
| } |
| |
| } |