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      1 /*
      2  * Copyright (C) 2013 The Android Open Source Project
      3  *
      4  * Licensed under the Apache License, Version 2.0 (the "License");
      5  * you may not use this file except in compliance with the License.
      6  * You may obtain a copy of the License at
      7  *
      8  *      http://www.apache.org/licenses/LICENSE-2.0
      9  *
     10  * Unless required by applicable law or agreed to in writing, software
     11  * distributed under the License is distributed on an "AS IS" BASIS,
     12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     13  * See the License for the specific language governing permissions and
     14  * limitations under the License.
     15  */
     16 
     17 package com.android.gallery3d.filtershow.tools;
     18 
     19 import android.content.Context;
     20 import android.net.Uri;
     21 import android.util.Log;
     22 
     23 import com.adobe.xmp.XMPException;
     24 import com.adobe.xmp.XMPMeta;
     25 import com.adobe.xmp.XMPMetaFactory;
     26 import com.android.gallery3d.R;
     27 import com.android.gallery3d.common.Utils;
     28 import com.android.gallery3d.filtershow.imageshow.MasterImage;
     29 import com.android.gallery3d.filtershow.pipeline.ImagePreset;
     30 import com.android.gallery3d.util.XmpUtilHelper;
     31 
     32 import java.io.File;
     33 import java.io.FileNotFoundException;
     34 import java.io.InputStream;
     35 
     36 public class XmpPresets {
     37     public static final String
     38             XMP_GOOGLE_FILTER_NAMESPACE = "http://ns.google.com/photos/1.0/filter/";
     39     public static final String XMP_GOOGLE_FILTER_PREFIX = "AFltr";
     40     public static final String XMP_SRC_FILE_URI = "SourceFileUri";
     41     public static final String XMP_FILTERSTACK = "filterstack";
     42 
     43     private static final String LOGTAG = "XmpPresets";
     44 
     45     public static class XMresults {
     46         public String presetString;
     47         public ImagePreset preset;
     48         public Uri originalimage;
     49     }
     50 
     51     static {
     52         try {
     53             XMPMetaFactory.getSchemaRegistry().registerNamespace(
     54                     XMP_GOOGLE_FILTER_NAMESPACE, XMP_GOOGLE_FILTER_PREFIX);
     55         } catch (XMPException e) {
     56             Log.e(LOGTAG, "Register XMP name space failed", e);
     57         }
     58     }
     59 
     60     public static void writeFilterXMP(
     61             Context context, Uri srcUri, File dstFile, ImagePreset preset) {
     62         InputStream is = null;
     63         XMPMeta xmpMeta = null;
     64         try {
     65             is = context.getContentResolver().openInputStream(srcUri);
     66             xmpMeta = XmpUtilHelper.extractXMPMeta(is);
     67         } catch (FileNotFoundException e) {
     68 
     69         } finally {
     70             Utils.closeSilently(is);
     71         }
     72 
     73         if (xmpMeta == null) {
     74             xmpMeta = XMPMetaFactory.create();
     75         }
     76         try {
     77             xmpMeta.setProperty(XMP_GOOGLE_FILTER_NAMESPACE,
     78                     XMP_SRC_FILE_URI, srcUri.toString());
     79             xmpMeta.setProperty(XMP_GOOGLE_FILTER_NAMESPACE,
     80                     XMP_FILTERSTACK, preset.getJsonString(ImagePreset.JASON_SAVED));
     81         } catch (XMPException e) {
     82             Log.v(LOGTAG, "Write XMP meta to file failed:" + dstFile.getAbsolutePath());
     83             return;
     84         }
     85 
     86         if (!XmpUtilHelper.writeXMPMeta(dstFile.getAbsolutePath(), xmpMeta)) {
     87             Log.v(LOGTAG, "Write XMP meta to file failed:" + dstFile.getAbsolutePath());
     88         }
     89     }
     90 
     91     public static XMresults extractXMPData(
     92             Context context, MasterImage mMasterImage, Uri uriToEdit) {
     93         XMresults ret = new XMresults();
     94 
     95         InputStream is = null;
     96         XMPMeta xmpMeta = null;
     97         try {
     98             is = context.getContentResolver().openInputStream(uriToEdit);
     99             xmpMeta = XmpUtilHelper.extractXMPMeta(is);
    100         } catch (FileNotFoundException e) {
    101         } finally {
    102             Utils.closeSilently(is);
    103         }
    104 
    105         if (xmpMeta == null) {
    106             return null;
    107         }
    108 
    109         try {
    110             String strSrcUri = xmpMeta.getPropertyString(XMP_GOOGLE_FILTER_NAMESPACE,
    111                     XMP_SRC_FILE_URI);
    112 
    113             if (strSrcUri != null) {
    114                 String filterString = xmpMeta.getPropertyString(XMP_GOOGLE_FILTER_NAMESPACE,
    115                         XMP_FILTERSTACK);
    116 
    117                 Uri srcUri = Uri.parse(strSrcUri);
    118                 ret.originalimage = srcUri;
    119 
    120                 ret.preset = new ImagePreset();
    121                 ret.presetString = filterString;
    122                 boolean ok = ret.preset.readJsonFromString(filterString);
    123                 if (!ok) {
    124                     return null;
    125                 }
    126                 return ret;
    127             }
    128         } catch (XMPException e) {
    129             e.printStackTrace();
    130         }
    131 
    132         return null;
    133     }
    134 }
    135