| /* |
| * Copyright (C) 2016 The Android Open Source Project |
| * |
| * 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. |
| */ |
| package com.android.devcamera; |
| |
| import android.content.ContentResolver; |
| import android.content.ContentValues; |
| import android.content.Context; |
| import android.content.SharedPreferences; |
| import android.os.SystemClock; |
| import android.provider.MediaStore; |
| import android.util.Log; |
| |
| import java.io.File; |
| import java.io.FileOutputStream; |
| import java.io.IOException; |
| import java.io.OutputStream; |
| |
| /** |
| * This class has methods required to save a JPEG to disk as well as update the |
| * MediaStore database. |
| */ |
| |
| |
| public class MediaSaver { |
| private static final String TAG = "Snappy_MediaSaver"; |
| private static final String MY_PREFS_NAME = "SnappyPrefs"; |
| |
| // MediaStore is slow/broken |
| private static final boolean UDPATE_MEDIA_STORE = true; |
| |
| |
| public static int getNextInt(Context context) { |
| SharedPreferences prefs = context.getSharedPreferences(MY_PREFS_NAME, Context.MODE_PRIVATE); |
| int i = prefs.getInt("counter", 1); |
| SharedPreferences.Editor editor = prefs.edit(); |
| editor.putInt("counter", i+1); |
| editor.commit(); |
| return i; |
| } |
| |
| /** |
| * @param context Application context. |
| * @param jpegData JPEG byte stream. |
| */ |
| public static String saveJpeg(Context context, byte[] jpegData, ContentResolver resolver) { |
| String filename = ""; |
| try { |
| File file; |
| while (true) { |
| int i = getNextInt(context); |
| filename = String.format("/sdcard/DCIM/Camera/SNAP_%05d.JPG", i); |
| file = new File(filename); |
| if (file.createNewFile()) { |
| break; |
| } |
| } |
| |
| long t0 = SystemClock.uptimeMillis(); |
| OutputStream os = new FileOutputStream(file); |
| os.write(jpegData); |
| os.flush(); |
| os.close(); |
| long t1 = SystemClock.uptimeMillis(); |
| |
| // update MediaStore so photos apps can find photos right away. |
| if (UDPATE_MEDIA_STORE) { |
| // really slow for some reason: MediaStore.Images.Media.insertImage(resolver, file.getAbsolutePath(), file.getName(), file.getName()); |
| insertImage(resolver, file); |
| } |
| long t2 = SystemClock.uptimeMillis(); |
| |
| Log.v(TAG, String.format("Wrote JPEG %d bytes as %s in %.3f seconds; mediastore update = %.3f secs", |
| jpegData.length, file, (t1 - t0) * 0.001, (t2 - t1) * 0.001) ); |
| } catch (IOException e) { |
| Log.e(TAG, "Error creating new file: ", e); |
| } |
| return filename; |
| } |
| |
| |
| // We use this instead of MediaStore.Images.Media.insertImage() because we want to add date metadata |
| public static void insertImage(ContentResolver cr, File file) { |
| |
| ContentValues values = new ContentValues(); |
| values.put(MediaStore.Images.Media.TITLE, file.getName()); |
| values.put(MediaStore.Images.Media.DISPLAY_NAME, file.getName()); |
| values.put(MediaStore.Images.Media.DESCRIPTION, file.getName()); |
| values.put(MediaStore.Images.Media.MIME_TYPE, "image/jpeg"); |
| values.put(MediaStore.Images.Media.DATA, file.getAbsolutePath()); |
| // Add the date meta data to ensure the image is added at the front of the gallery |
| values.put(MediaStore.Images.Media.DATE_ADDED, System.currentTimeMillis()); |
| values.put(MediaStore.Images.Media.DATE_TAKEN, System.currentTimeMillis()); |
| |
| try { |
| cr.insert(MediaStore.Images.Media.EXTERNAL_CONTENT_URI, values); |
| } catch (Exception e) { |
| Log.w(TAG, "Error updating media store for " + file, e); |
| } |
| } |
| |
| } |