Android Open Source - streamvid A M R N B Stream

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License

The source code is released under:

GNU General Public License

Java Source Code

/*
 * Copyright (C) 2011-2014 GUIGUI Simon, fyhertz@gmail.com
 * /*from  ww  w .  ja  v a  2s.co  m*/
 * This file is part of libstreaming (https://github.com/fyhertz/libstreaming)
 * 
 * Spydroid 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.
 * 
 * This source code 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 this source code; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 */

package net.majorkernelpanic.streaming.audio;

import java.io.IOException;
import java.lang.reflect.Field;

import net.majorkernelpanic.streaming.SessionBuilder;
import net.majorkernelpanic.streaming.rtp.AMRNBPacketizer;
import android.media.MediaRecorder;
import android.service.textservice.SpellCheckerService.Session;

/**
 * A class for streaming AAC from the camera of an android device using RTP.
 * You should use a {@link Session} instantiated with {@link SessionBuilder} instead of using this class directly.
 * Call {@link #setDestinationAddress(InetAddress)}, {@link #setDestinationPorts(int)} and {@link #setAudioQuality(AudioQuality)}
 * to configure the stream. You can then call {@link #start()} to start the RTP stream.
 * Call {@link #stop()} to stop the stream.
 */
public class AMRNBStream extends AudioStream {

  public AMRNBStream() {
    super();

    mPacketizer = new AMRNBPacketizer();

    setAudioSource(MediaRecorder.AudioSource.CAMCORDER);
    
    try {
      // RAW_AMR was deprecated in API level 16.
      Field deprecatedName = MediaRecorder.OutputFormat.class.getField("RAW_AMR");
      setOutputFormat(deprecatedName.getInt(null));
    } catch (Exception e) {
      setOutputFormat(MediaRecorder.OutputFormat.AMR_NB);
    }
    
    setAudioEncoder(MediaRecorder.AudioEncoder.AMR_NB);
    
  }

  /**
   * Starts the stream.
   */
  public synchronized void start() throws IllegalStateException, IOException {
    if (!mStreaming) {
      configure();
      super.start();
    }
  }

  public synchronized void configure() throws IllegalStateException, IOException {
    super.configure();
    mMode = MODE_MEDIARECORDER_API;
    mQuality = mRequestedQuality.clone();
  }

  /**
   * Returns a description of the stream using SDP. It can then be included in an SDP file.
   */  
  public String getSessionDescription() {
    return "m=audio "+String.valueOf(getDestinationPorts()[0])+" RTP/AVP 96\r\n" +
        "a=rtpmap:96 AMR/8000\r\n" +
        "a=fmtp:96 octet-align=1;\r\n";
  }

  @Override
  protected void encodeWithMediaCodec() throws IOException {
    super.encodeWithMediaRecorder();
  }

}

Java Source Code List

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