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/*
* Copyright (C) 2014 Yuya Tanaka
*
* 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 net.ypresto.androidtranscoder.utils;
import android.media.MediaExtractor;
import android.media.MediaFormat;
public class MediaExtractorUtils {
private MediaExtractorUtils() {
}
public static class TrackResult {
private TrackResult() {
}
public int mVideoTrackIndex;
public String mVideoTrackMime;
public MediaFormat mVideoTrackFormat;
public int mAudioTrackIndex;
public String mAudioTrackMime;
public MediaFormat mAudioTrackFormat;
}
public static TrackResult getFirstVideoAndAudioTrack(MediaExtractor extractor) {
TrackResult trackResult = new TrackResult();
trackResult.mVideoTrackIndex = -1;
trackResult.mAudioTrackIndex = -1;
int trackCount = extractor.getTrackCount();
for (int i = 0; i < trackCount; i++) {
MediaFormat format = extractor.getTrackFormat(i);
String mime = format.getString(MediaFormat.KEY_MIME);
if (trackResult.mVideoTrackIndex < 0 && mime.startsWith("video/")) {
trackResult.mVideoTrackIndex = i;
trackResult.mVideoTrackMime = mime;
trackResult.mVideoTrackFormat = format;
} else if (trackResult.mAudioTrackIndex < 0 && mime.startsWith("audio/")) {
trackResult.mAudioTrackIndex = i;
trackResult.mAudioTrackMime = mime;
trackResult.mAudioTrackFormat = format;
}
if (trackResult.mVideoTrackIndex >= 0 && trackResult.mAudioTrackIndex >= 0) break;
}
if (trackResult.mVideoTrackIndex < 0 || trackResult.mAudioTrackIndex < 0) {
throw new IllegalArgumentException("extractor does not contain video and/or audio tracks.");
}
return trackResult;
}
}
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