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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.format;
import android.media.MediaCodecInfo;
import android.media.MediaFormat;
import android.os.Build;
import android.support.annotation.RequiresApi;
import android.util.Log;
class AndroidStandardFormatStrategy implements MediaFormatStrategy {
public static final int AUDIO_BITRATE_AS_IS = -1;
public static final int AUDIO_CHANNELS_AS_IS = -1;
private static final String TAG = "StandardCompression";
private static final int DEFAULT_VIDEO_BITRATE = 2000 * 1000;
private static int LONGER_LENGTH = 1280;
private static int SHORTER_LENGTH = 720;
private final int mVideoBitrate;
private final int mVideoresolution;
private final int mAudioBitrate;
private final int mAudioChannels;
private float ASPECT_RATIO = LONGER_LENGTH / SHORTER_LENGTH;
public AndroidStandardFormatStrategy() {
this(DEFAULT_VIDEO_BITRATE, SHORTER_LENGTH);
}
public AndroidStandardFormatStrategy(int videoBitrate, int SHORTER_LENGTH) {
this(videoBitrate, SHORTER_LENGTH, AUDIO_BITRATE_AS_IS, AUDIO_CHANNELS_AS_IS);
}
public AndroidStandardFormatStrategy(int videoBitrate, int SHORTER_LENGTH, int audioBitrate, int audioChannels) {
mVideoBitrate = videoBitrate;
mVideoresolution = SHORTER_LENGTH;
mAudioBitrate = audioBitrate;
mAudioChannels = audioChannels;
}
@RequiresApi(api = Build.VERSION_CODES.JELLY_BEAN_MR2)
@Override
public MediaFormat createVideoOutputFormat(MediaFormat inputFormat) {
int width = inputFormat.getInteger(MediaFormat.KEY_WIDTH);
int height = inputFormat.getInteger(MediaFormat.KEY_HEIGHT);
ASPECT_RATIO = (float) width / height;
Log.d(TAG, "Input video (" + width + "x" + height + " ratio: " + ASPECT_RATIO);
int shorter, outWidth, outHeight;
if (width >= height) {
shorter = height;
outWidth = Math.round(mVideoresolution * ASPECT_RATIO);
outHeight = mVideoresolution;
} else {
shorter = width;
outWidth = mVideoresolution;
outHeight = Math.round(mVideoresolution * ASPECT_RATIO);
}
if (shorter < mVideoresolution) {
Log.d(TAG, "This video is less to " + mVideoresolution + "p, pass-through. (" + width + "x" + height + ")");
return null;
}
Log.d(TAG, "Converting video (" + outWidth + "x" + outHeight + " ratio: " + ASPECT_RATIO + ")");
MediaFormat format = MediaFormat.createVideoFormat("video/avc", outWidth, outHeight);
format.setInteger(MediaFormat.KEY_BIT_RATE, mVideoBitrate);
format.setInteger(MediaFormat.KEY_FRAME_RATE, 30);
format.setInteger(MediaFormat.KEY_I_FRAME_INTERVAL, 3);
format.setInteger(MediaFormat.KEY_COLOR_FORMAT, MediaCodecInfo.CodecCapabilities.COLOR_FormatSurface);
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
format.setInteger(MediaFormat.KEY_PROFILE ,MediaCodecInfo.CodecProfileLevel.AVCProfileBaseline);
format.setInteger(MediaFormat.KEY_LEVEL, MediaCodecInfo.CodecProfileLevel.AVCLevel13);
}
return format;
}
@Override
public MediaFormat createAudioOutputFormat(MediaFormat inputFormat) {
if (mAudioBitrate == AUDIO_BITRATE_AS_IS || mAudioChannels == AUDIO_CHANNELS_AS_IS)
return null;
// Use original sample rate, as resampling is not supported yet.
final MediaFormat format = MediaFormat.createAudioFormat(MediaFormatExtraConstants.MIMETYPE_AUDIO_AAC,
inputFormat.getInteger(MediaFormat.KEY_SAMPLE_RATE), mAudioChannels);
format.setInteger(MediaFormat.KEY_AAC_PROFILE, MediaCodecInfo.CodecProfileLevel.AACObjectLC);
format.setInteger(MediaFormat.KEY_BIT_RATE, mAudioBitrate);
return format;
}
}
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