/*
* VideoRecordingSetup.java
*
* Copyright � 1998-2011 Research In Motion Limited
*
* 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.
*
* Note: For the sake of simplicity, this sample application may not leverage
* resource bundles and resource strings. However, it is STRONGLY recommended
* that application developers make use of the localization features available
* within the BlackBerry development platform to ensure a seamless application
* experience across a variety of languages and geographies. For more information
* on localizing your application, please refer to the BlackBerry Java Development
* Environment Development Guide associated with this release.
*/
package com.rim.samples.device.videorecordingdemo;
import java.io.IOException;
import java.util.Enumeration;
import java.util.Vector;
import javax.microedition.io.Connector;
import javax.microedition.io.file.FileConnection;
import javax.microedition.io.file.FileSystemRegistry;
/**
* Helper class for retrieving the necessary device information for video
* recording.
*/
public class VideoRecordingSetup {
/**
* Retrieves a list of all the video encodings available on the current
* device
*
* @return Newly created array of Strings whose elements are the video
* encodings supported by this device. Returns <code>null</code> if
* this device does not support video encoding.
*/
public static String[] getVideoEncodings() {
// Retrieve the supported video encodings available on this device
final String encodingsString = System.getProperty("video.encodings");
// Return null if this device does not support video encoding
if (encodingsString == null) {
return null;
}
// Split the whitespace delimited encodingsString into a
// String array of encodings.
final Vector encodings = new Vector();
int start = 0;
int space = encodingsString.indexOf(' ');
while (space != -1) {
encodings.addElement(encodingsString.substring(start, space));
start = space + 1;
space = encodingsString.indexOf(' ', start);
}
encodings.addElement(encodingsString.substring(start, encodingsString
.length()));
// Copy the encodings into a String array
final String[] encodingArray = new String[encodings.size()];
encodings.copyInto(encodingArray);
return encodingArray;
}
/**
* Retrieves a list of all the file systems larger than
* {@link VideoRecordingDemo#MIN_FILE_SYSTEM_SIZE} available on this device.
* These file systems will be suitable for recording videos.
*
* @return Newly created array of Strings whose elements are the file
* systems larger than
* {@link VideoRecordingDemo#MIN_FILE_SYSTEM_SIZE}
*/
public static String[] getFileSystems(final int minSize) {
final Vector fileSystems = new Vector();
final Enumeration fileSystemList = FileSystemRegistry.listRoots();
while (fileSystemList.hasMoreElements()) {
final String fileSystemName = (String) fileSystemList.nextElement();
// Cannot write data to "system/" partition
if (!fileSystemName.equals("system/")) {
try {
final FileConnection fconn =
(FileConnection) Connector.open("file:///"
+ fileSystemName);
if (fconn.availableSize() >= minSize) {
fileSystems.addElement(fileSystemName);
}
} catch (final IOException e) {
// If an exception occurs, just ignore the file system
}
}
}
final String[] fileSystemsArray = new String[fileSystems.size()];
fileSystems.copyInto(fileSystemsArray);
return fileSystemsArray;
}
}