Java tutorial
/* * Copyright (C) 2011 GUIGUI Simon, fyhertz@gmail.com * * This file is part of Spydroid (http://code.google.com/p/spydroid-ipcamera/) * * 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.spydroid; import java.util.Iterator; import java.util.regex.Matcher; import java.util.regex.Pattern; import org.apache.http.client.HttpClient; import org.apache.http.client.ResponseHandler; import org.apache.http.client.methods.HttpGet; import org.apache.http.conn.ConnectTimeoutException; import org.apache.http.impl.client.BasicResponseHandler; import org.apache.http.impl.client.DefaultHttpClient; import org.apache.http.params.BasicHttpParams; import org.apache.http.params.HttpConnectionParams; import org.apache.http.params.HttpParams; import org.json.JSONObject; import org.json.JSONTokener; import android.app.Activity; import android.content.Context; import android.content.SharedPreferences; import android.content.SharedPreferences.Editor; import android.media.AudioManager; import android.media.MediaPlayer; import android.media.MediaPlayer.OnCompletionListener; import android.media.MediaPlayer.OnPreparedListener; import android.net.Uri; import android.os.AsyncTask; import android.os.Bundle; import android.preference.PreferenceManager; import android.util.Log; import android.view.View; import android.view.View.OnClickListener; import android.widget.AdapterView; import android.widget.AdapterView.OnItemSelectedListener; import android.widget.ArrayAdapter; import android.widget.CheckBox; import android.widget.EditText; import android.widget.FrameLayout; import android.widget.LinearLayout; import android.widget.ProgressBar; import android.widget.RelativeLayout; import android.widget.Spinner; import android.widget.SpinnerAdapter; import android.widget.VideoView; import postech.itce.teleconsultation.R; /** * Allow a user with two smartphones to control one from the other * Feature disabled, do not work well enough :( because of MediaPlayer that really really sucks **/ public class ClientActivity extends Activity implements OnCompletionListener, OnPreparedListener, OnItemSelectedListener { private final static String TAG = "ClientActivity"; private SharedPreferences settings; private EditText editTextIP; private MyVideoView videoView; private MediaPlayer audioStream; private FrameLayout layoutContainer; private RelativeLayout layoutForm, layoutControl; private ProgressBar progressBar; private String videoParameters = "", audioParameters = ""; @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.client_spydroid); editTextIP = (EditText) findViewById(R.id.server_ip); layoutContainer = (FrameLayout) findViewById(R.id.video_container); layoutForm = (RelativeLayout) findViewById(R.id.form); layoutControl = (RelativeLayout) findViewById(R.id.control); progressBar = (ProgressBar) findViewById(R.id.progress); audioStream = new MediaPlayer(); // Initiate connection with client findViewById(R.id.button_connect).setOnClickListener(new OnClickListener() { @Override public void onClick(View v) { Editor editor = settings.edit(); editor.putString("last_server_ip", editTextIP.getText().toString()); editor.commit(); layoutForm.setVisibility(View.GONE); progressBar.setVisibility(View.VISIBLE); getCurrentConfiguration(); } }); // Interrupt connection with the client findViewById(R.id.button_stop).setOnClickListener(new OnClickListener() { @Override public void onClick(View v) { stopStreaming(); layoutControl.setVisibility(View.GONE); layoutForm.setVisibility(View.VISIBLE); progressBar.setVisibility(View.GONE); } }); // Show configuration panel findViewById(R.id.button_config).setOnClickListener(new OnClickListener() { @Override public void onClick(View v) { findViewById(R.id.settings).setVisibility(View.VISIBLE); } }); findViewById(R.id.reconnect).setOnClickListener(new OnClickListener() { @Override public void onClick(View v) { findViewById(R.id.settings).setVisibility(View.GONE); updateSettings(); } }); // Resolution Spinner spinner = (Spinner) findViewById(R.id.spinner1); ArrayAdapter<CharSequence> adapter = ArrayAdapter.createFromResource(this, R.array.videoResolutionArray, android.R.layout.simple_spinner_item); adapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item); spinner.setAdapter(adapter); // Framerate spinner = (Spinner) findViewById(R.id.spinner2); adapter = ArrayAdapter.createFromResource(this, R.array.videoFramerateArray, android.R.layout.simple_spinner_item); adapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item); spinner.setAdapter(adapter); spinner.setOnItemSelectedListener(this); // Bitrate spinner = (Spinner) findViewById(R.id.spinner3); adapter = ArrayAdapter.createFromResource(this, R.array.videoBitrateArray, android.R.layout.simple_spinner_item); adapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item); spinner.setAdapter(adapter); spinner.setOnItemSelectedListener(this); // Video Encoder spinner = (Spinner) findViewById(R.id.spinner4); adapter = ArrayAdapter.createFromResource(this, R.array.videoEncoderArray, android.R.layout.simple_spinner_item); adapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item); spinner.setAdapter(adapter); spinner.setOnItemSelectedListener(this); // Audio Encoder spinner = (Spinner) findViewById(R.id.spinner5); adapter = ArrayAdapter.createFromResource(this, R.array.audioEncoderArray, android.R.layout.simple_spinner_item); adapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item); spinner.setAdapter(adapter); spinner.setOnItemSelectedListener(this); settings = PreferenceManager.getDefaultSharedPreferences(this); editTextIP.setText(settings.getString("last_server_ip", "192.168.0.107")); } /** Fetch the current streaming configuration of the remote phone **/ private void getCurrentConfiguration() { new AsyncTask<Void, Void, String>() { @Override protected String doInBackground(Void... params) { HttpParams httpParameters = new BasicHttpParams(); HttpConnectionParams.setConnectionTimeout(httpParameters, 3000); HttpConnectionParams.setSoTimeout(httpParameters, 3000); HttpClient client = new DefaultHttpClient(httpParameters); HttpGet request = new HttpGet( "http://" + editTextIP.getText().toString() + ":8080/config.json?get"); ResponseHandler<String> responseHandler = new BasicResponseHandler(); String response = ""; try { response = client.execute(request, responseHandler); } catch (ConnectTimeoutException e) { Log.i(TAG, "Connection timeout ! "); onCompletion(null); } catch (Exception e) { Log.e(TAG, "Could not fetch current configuration on remote device !"); e.printStackTrace(); } return response; } @Override protected void onPostExecute(String response) { try { JSONObject object = (JSONObject) new JSONTokener(response).nextValue(); ((CheckBox) findViewById(R.id.checkbox1)).setChecked(object.getBoolean("streamVideo")); ((CheckBox) findViewById(R.id.checkbox2)).setChecked(object.getBoolean("streamAudio")); for (int spinner : new int[] { R.id.spinner1, R.id.spinner2, R.id.spinner3, R.id.spinner4, R.id.spinner5 }) { Spinner view = (Spinner) findViewById(spinner); SpinnerAdapter adapter = view.getAdapter(); for (int i = 0; i < adapter.getCount(); i++) { Iterator<String> keys = object.keys(); while (keys.hasNext()) { String key = keys.next(); if (adapter.getItem(i).equals(object.get(key))) { view.setSelection(i); } } } } generateURI(); connectToServer(); } catch (Exception e) { stopStreaming(); e.printStackTrace(); } } }.execute(); } private void updateSettings() { final String oldVideoParameters = videoParameters, oldAudioParameters = audioParameters; generateURI(); if (oldVideoParameters == videoParameters && oldAudioParameters == audioParameters) return; stopStreaming(); progressBar.setVisibility(View.VISIBLE); new AsyncTask<Void, Void, Void>() { @Override protected Void doInBackground(Void... params) { HttpClient client = new DefaultHttpClient(); //HttpGet request = new HttpGet("http://"+editTextIP.getText().toString()+":8080?set&"+uriParameters); try { Thread.sleep(2000); } catch (InterruptedException ignore) { } return null; } @Override protected void onPostExecute(Void weird) { Log.d(TAG, "Reconnecting to server..."); connectToServer(); } }.execute(); } /** Generates the URL that will be used to configure the client **/ private void generateURI() { int[] spinners = new int[] { R.id.spinner1, R.id.spinner2, R.id.spinner3, R.id.spinner4, R.id.spinner5 }; videoParameters = ""; audioParameters = ""; // Video streaming enabled ? if (((CheckBox) findViewById(R.id.checkbox1)).isChecked()) { int fps = 0, br = 0, resX = 0, resY = 0; Pattern p; Matcher m; // User has changed the resolution try { p = Pattern.compile("(\\d+)x(\\d+)"); m = p.matcher(((String) ((Spinner) findViewById(spinners[0])).getSelectedItem())); m.find(); resX = Integer.parseInt(m.group(1)); resY = Integer.parseInt(m.group(2)); } catch (Exception ignore) { } // User has changed the framerate try { p = Pattern.compile("(\\d+)[^\\d]+"); m = p.matcher(((String) ((Spinner) findViewById(spinners[1])).getSelectedItem())); m.find(); fps = Integer.parseInt(m.group(1)); } catch (Exception ignore) { } // User has changed the bitrate try { p = Pattern.compile("(\\d+)[^\\d]+"); m = p.matcher(((String) ((Spinner) findViewById(spinners[2])).getSelectedItem())); m.find(); br = Integer.parseInt(m.group(1)); } catch (Exception ignore) { } videoParameters += ((String) ((Spinner) findViewById(spinners[3])).getSelectedItem()).equals("H.264") ? "h264" : "h263"; videoParameters += "=" + br + "-" + fps + "-" + resX + "-" + resY; } else { videoParameters = "novideo"; } // Audio streaming enabled ? if (((CheckBox) findViewById(R.id.checkbox2)).isChecked()) { audioParameters += ((String) ((Spinner) findViewById(spinners[4])).getSelectedItem()).equals("AMR-NB") ? "amr" : "aac"; } Log.d(TAG, "Cient configuration: video=" + videoParameters + " audio=" + audioParameters); } /** Connect to the RTSP server of the remote phone **/ private void connectToServer() { // Start video streaming if (videoParameters.length() > 0) { videoView = new MyVideoView(this); videoView.setLayoutParams(new LinearLayout.LayoutParams(LinearLayout.LayoutParams.FILL_PARENT, LinearLayout.LayoutParams.FILL_PARENT)); layoutContainer.addView(videoView); videoView.setOnPreparedListener(this); videoView.setOnCompletionListener(this); videoView.setVideoURI(Uri.parse("rtsp://" + editTextIP.getText().toString() + ":8086/" + (videoParameters.length() > 0 ? ("?" + videoParameters) : ""))); videoView.requestFocus(); } // Start audio streaming if (audioParameters.length() > 0) { try { audioStream.reset(); audioStream.setDataSource(this, Uri.parse("rtsp://" + editTextIP.getText().toString() + ":8086/" + (audioParameters.length() > 0 ? ("?" + audioParameters) : ""))); audioStream.setAudioStreamType(AudioManager.STREAM_MUSIC); audioStream.setOnPreparedListener(new OnPreparedListener() { @Override public void onPrepared(MediaPlayer mp) { audioStream.start(); } }); audioStream.prepareAsync(); } catch (Exception e) { Log.e(TAG, e.getMessage()); e.printStackTrace(); } } Log.e(TAG, "rtsp://" + editTextIP.getText().toString() + ":8086" + (videoParameters.length() > 0 ? ("?" + videoParameters) : "")); } private void stopStreaming() { try { if (videoView != null && videoView.isPlaying()) { layoutContainer.removeView(videoView); videoView.stopPlayback(); videoView = null; } } catch (Exception ignore) { } try { if (audioStream != null && audioStream.isPlaying()) { audioStream.stop(); audioStream.reset(); } } catch (Exception ignore) { } } @Override public void onStart() { super.onStart(); } @Override public void onStop() { super.onStop(); } @Override public void onCompletion(MediaPlayer mp) { runOnUiThread(new Runnable() { @Override public void run() { layoutControl.setVisibility(View.GONE); progressBar.setVisibility(View.GONE); layoutForm.setVisibility(View.VISIBLE); stopStreaming(); } }); } @Override public void onPrepared(MediaPlayer mp) { runOnUiThread(new Runnable() { @Override public void run() { progressBar.setVisibility(View.GONE); layoutControl.setVisibility(View.VISIBLE); videoView.start(); } }); } static class MyVideoView extends VideoView { public MyVideoView(Context context) { super(context); } @Override protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) { int width = getDefaultSize(0, widthMeasureSpec); int height = getDefaultSize(0, heightMeasureSpec); setMeasuredDimension(width, height); } } @Override public void onItemSelected(AdapterView<?> parent, View view, int pos, long id) { } @Override public void onNothingSelected(AdapterView<?> arg0) { } }