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/*
* Copyright (C) 2015 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.engine;
import android.media.MediaFormat;
import net.ypresto.androidtranscoder.format.MediaFormatExtraConstants;
import net.ypresto.androidtranscoder.utils.AvcCsdUtils;
import net.ypresto.androidtranscoder.utils.AvcSpsUtils;
import java.nio.ByteBuffer;
class MediaFormatValidator {
// Refer: http://en.wikipedia.org/wiki/H.264/MPEG-4_AVC#Profiles
private static final byte PROFILE_IDC_BASELINE = 66;
public static void validateVideoOutputFormat(MediaFormat format) {
String mime = format.getString(MediaFormat.KEY_MIME);
// Refer: http://developer.android.com/guide/appendix/media-formats.html#core
// Refer: http://en.wikipedia.org/wiki/MPEG-4_Part_14#Data_streams
if (!MediaFormatExtraConstants.MIMETYPE_VIDEO_AVC.equals(mime)) {
throw new InvalidOutputFormatException("Video codecs other than AVC is not supported, actual mime type: " + mime);
}
ByteBuffer spsBuffer = AvcCsdUtils.getSpsBuffer(format);
byte profileIdc = AvcSpsUtils.getProfileIdc(spsBuffer);
if (profileIdc != PROFILE_IDC_BASELINE) {
throw new InvalidOutputFormatException("Non-baseline AVC video profile is not supported by Android OS, actual profile_idc: " + profileIdc);
}
}
public static void validateAudioOutputFormat(MediaFormat format) {
String mime = format.getString(MediaFormat.KEY_MIME);
if (!MediaFormatExtraConstants.MIMETYPE_AUDIO_AAC.equals(mime)) {
throw new InvalidOutputFormatException("Audio codecs other than AAC is not supported, actual mime type: " + mime);
}
}
}
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