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/* Copyright (c) 2014, The Linux Foundation. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following
* disclaimer in the documentation and/or other materials provided
* with the distribution.
* * Neither the name of The Linux Foundation nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
* BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
* OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
* IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
package com.android.camera;
import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.content.IntentFilter;
import android.os.Environment;
import android.os.storage.StorageVolume;
import android.os.storage.StorageManager;
import android.util.Log;
public class SDCard {
private static final String TAG = "SDCard";
private static final int VOLUME_SDCARD_INDEX = 1;
private StorageManager mStorageManager = null;
private StorageVolume mVolume = null;
private String mPath = null;
private String mRawpath = null;
private static SDCard sSDCard;
public boolean isWriteable() {
if (mVolume == null) return false;
final String state = getSDCardStorageState();
if (Environment.MEDIA_MOUNTED.equals(state)) {
return true;
}
return false;
}
public String getDirectory() {
if (mVolume == null) {
return null;
}
if (mPath == null) {
mPath = mVolume.getPath() + "/DCIM/Camera";
}
return mPath;
}
public String getRawDirectory() {
if (mVolume == null) {
return null;
}
if (mRawpath == null) {
mRawpath = mVolume.getPath() + "/DCIM/Camera/raw";
}
return mRawpath;
}
public static void initialize(Context context) {
if (sSDCard == null) {
sSDCard = new SDCard(context);
}
}
public static synchronized SDCard instance() {
return sSDCard;
}
private String getSDCardStorageState() {
return mVolume.getState();
}
private SDCard(Context context) {
try {
mStorageManager = (StorageManager) context.getSystemService(Context.STORAGE_SERVICE);
initVolume();
registerMediaBroadcastreceiver(context);
} catch (Exception e) {
Log.e(TAG, "couldn't talk to MountService", e);
}
}
private void initVolume() {
final StorageVolume[] volumes = mStorageManager.getVolumeList();
mVolume = (volumes.length > VOLUME_SDCARD_INDEX) ?
volumes[VOLUME_SDCARD_INDEX] : null;
mPath = null;
mRawpath = null;
}
private void registerMediaBroadcastreceiver(Context context) {
IntentFilter filter = new IntentFilter(Intent.ACTION_MEDIA_MOUNTED);
filter.addAction(Intent.ACTION_MEDIA_UNMOUNTED);
filter.addDataScheme("file");
context.registerReceiver(mMediaBroadcastReceiver , filter);
}
private BroadcastReceiver mMediaBroadcastReceiver = new BroadcastReceiver() {
@Override
public void onReceive(Context context, Intent intent) {
initVolume();
}
};
}
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