diff options
Diffstat (limited to 'src/com/android/gallery3d/data/UriSource.java')
-rw-r--r-- | src/com/android/gallery3d/data/UriSource.java | 95 |
1 files changed, 95 insertions, 0 deletions
diff --git a/src/com/android/gallery3d/data/UriSource.java b/src/com/android/gallery3d/data/UriSource.java new file mode 100644 index 000000000..f66bacd7b --- /dev/null +++ b/src/com/android/gallery3d/data/UriSource.java @@ -0,0 +1,95 @@ +/* + * Copyright (C) 2010 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.gallery3d.data; + +import android.content.ContentResolver; +import android.net.Uri; +import android.webkit.MimeTypeMap; + +import com.android.gallery3d.app.GalleryApp; + +import java.io.UnsupportedEncodingException; +import java.net.URLDecoder; +import java.net.URLEncoder; + +class UriSource extends MediaSource { + @SuppressWarnings("unused") + private static final String TAG = "UriSource"; + private static final String IMAGE_TYPE_PREFIX = "image/"; + private static final String IMAGE_TYPE_ANY = "image/*"; + private static final String CHARSET_UTF_8 = "utf-8"; + + private GalleryApp mApplication; + + public UriSource(GalleryApp context) { + super("uri"); + mApplication = context; + } + + @Override + public MediaObject createMediaObject(Path path) { + String segment[] = path.split(); + if (segment.length != 3) { + throw new RuntimeException("bad path: " + path); + } + try { + String uri = URLDecoder.decode(segment[1], CHARSET_UTF_8); + String type = URLDecoder.decode(segment[2], CHARSET_UTF_8); + return new UriImage(mApplication, path, Uri.parse(uri), type); + } catch (UnsupportedEncodingException e) { + throw new AssertionError(e); + } + } + + private String getMimeType(Uri uri) { + if (ContentResolver.SCHEME_FILE.equals(uri.getScheme())) { + String extension = + MimeTypeMap.getFileExtensionFromUrl(uri.toString()); + String type = MimeTypeMap.getSingleton() + .getMimeTypeFromExtension(extension.toLowerCase()); + if (type != null) return type; + } + // Assume the type is image if the type cannot be resolved + // This could happen for "http" URI. + String type = mApplication.getContentResolver().getType(uri); + if (type == null) type = "image/*"; + return type; + } + + @Override + public Path findPathByUri(Uri uri, String type) { + String mimeType = getMimeType(uri); + + // Try to find a most specific type but it has to be started with "image/" + if ((type == null) || (IMAGE_TYPE_ANY.equals(type) + && mimeType.startsWith(IMAGE_TYPE_PREFIX))) { + type = mimeType; + } + + if (type.startsWith(IMAGE_TYPE_PREFIX)) { + try { + return Path.fromString("/uri/" + + URLEncoder.encode(uri.toString(), CHARSET_UTF_8) + + "/" +URLEncoder.encode(type, CHARSET_UTF_8)); + } catch (UnsupportedEncodingException e) { + throw new AssertionError(e); + } + } + // We have no clues that it is an image + return null; + } +} |