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/*
* 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 com.google.android.exoplayer.util.MimeTypes;
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) {
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;
int pcmEncoding = MimeTypes.AUDIO_RAW.equals(mimeType) ? C.ENCODING_PCM_16BIT
: MediaFormat.NO_VALUE;
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, pcmEncoding,
encoderDelay, encoderPadding, null, MediaFormat.NO_VALUE);
mediaFormat.setFrameworkFormatV16(format);
return mediaFormat;
}
@Nullable
private static String getOptionalStringV16(android.media.MediaFormat format, String key) {
return format.containsKey(key) ? format.getString(key) : null;
}
private static int getOptionalIntegerV16(android.media.MediaFormat format, String key) {
return format.containsKey(key) ? format.getInteger(key) : MediaFormat.NO_VALUE;
}
}
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