Android Open Source - screenshare-playground Media Codec Factory

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License

The source code is released under:

GNU General Public License

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Java Source Code

/*
 * Copyright (c) 2015 Renard Wellnitz./* www.j  a v  a  2 s .  c  om*/
 *
 *  This file is part of ScreenShare.
 *
 *     Foobar is free software: you can redistribute it and/or modify
 *     it under the terms of the GNU General Public License as published by
 *     the Free Software Foundation, either version 3 of the License, or
 *     (at your option) any later version.
 *
 *     Foobar is distributed in the hope that it will be useful,
 *     but WITHOUT ANY WARRANTY; without even the implied warranty of
 *     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *     GNU General Public License for more details.
 *
 *     You should have received a copy of the GNU General Public License
 *     along with Foobar.  If not, see <http://www.gnu.org/licenses/>.
 */

package com.screenshare.renard314.screensharelib;

import android.media.MediaCodec;
import android.media.MediaCodecInfo;
import android.media.MediaFormat;
import android.view.Surface;

import java.io.IOException;

/**
 * Created by renard on 18/12/14.
 */
public class MediaCodecFactory {
  private static final String MIME_TYPE = "video/avc";
  private static final int FRAME_RATE = 5;               // 15fps
  private static final int IFRAME_INTERVAL = 4;          // 10 seconds between I-frames
  private static final int BIT_RATE = 400000;            // 2Mbps
  private final int mWidth;
  private final int mHeight;

  public MediaCodecFactory(int width, int height){


    mWidth = width;
    mHeight = height;
  }


  public MediaCodec createVideoEncoder() throws IOException {
    // Encoded video resolution matches virtual display.
    MediaFormat encoderFormat = MediaFormat.createVideoFormat(MIME_TYPE, mWidth, mHeight);

    encoderFormat.setInteger(MediaFormat.KEY_COLOR_FORMAT, MediaCodecInfo.CodecCapabilities.COLOR_FormatSurface);
    encoderFormat.setInteger(MediaFormat.KEY_BIT_RATE, BIT_RATE);
    encoderFormat.setInteger(MediaFormat.KEY_FRAME_RATE, FRAME_RATE);
    encoderFormat.setInteger(MediaFormat.KEY_I_FRAME_INTERVAL, IFRAME_INTERVAL);
    MediaCodec encoder = MediaCodec.createEncoderByType(MIME_TYPE);
    encoder.configure(encoderFormat, null, null, MediaCodec.CONFIGURE_FLAG_ENCODE);
    return encoder;
  }

  public MediaCodec createVideoDecoder(Surface surface) throws IOException {
    MediaFormat outputFormat = MediaFormat.createVideoFormat(MIME_TYPE, mWidth, mHeight);
    outputFormat.setInteger(MediaFormat.KEY_COLOR_FORMAT, MediaCodecInfo.CodecCapabilities.COLOR_FormatSurface);
    outputFormat.setInteger(MediaFormat.KEY_BIT_RATE, BIT_RATE);
    outputFormat.setInteger(MediaFormat.KEY_FRAME_RATE, FRAME_RATE);
    outputFormat.setInteger(MediaFormat.KEY_I_FRAME_INTERVAL, IFRAME_INTERVAL);
    MediaCodec decoder = MediaCodec.createDecoderByType(MIME_TYPE);
    decoder.configure(outputFormat, surface, null, 0);
    return decoder;
  }

  public int getWidth() {
    return mWidth;
  }

  public int getHeight() {
    return mHeight;
  }
}

Java Source Code List