1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
|
package com.android.gallery3d.filtershow.provider;
import android.content.ContentProvider;
import android.content.ContentValues;
import android.database.Cursor;
import android.database.MatrixCursor;
import android.net.Uri;
import android.os.ConditionVariable;
import android.os.ParcelFileDescriptor;
import android.provider.BaseColumns;
import android.provider.MediaStore;
import android.provider.OpenableColumns;
import android.util.Log;
import java.io.File;
import java.io.FileNotFoundException;
import java.util.Arrays;
public class SharedImageProvider extends ContentProvider {
private static final String LOGTAG = "SharedImageProvider";
public static final String MIME_TYPE = "image/jpeg";
public static final String AUTHORITY = "com.android.gallery3d.filtershow.provider.SharedImageProvider";
public static final Uri CONTENT_URI = Uri.parse("content://" + AUTHORITY + "/image");
public static final String PREPARE = "prepare";
private final String[] mMimeStreamType = {
MIME_TYPE
};
private static ConditionVariable mImageReadyCond = new ConditionVariable(false);
@Override
public int delete(Uri arg0, String arg1, String[] arg2) {
return 0;
}
@Override
public String getType(Uri arg0) {
return MIME_TYPE;
}
@Override
public String[] getStreamTypes(Uri arg0, String mimeTypeFilter) {
return mMimeStreamType;
}
@Override
public Uri insert(Uri uri, ContentValues values) {
if (values.containsKey(PREPARE)) {
if (values.getAsBoolean(PREPARE)) {
mImageReadyCond.close();
} else {
mImageReadyCond.open();
}
}
return null;
}
@Override
public int update(Uri arg0, ContentValues arg1, String arg2, String[] arg3) {
return 0;
}
@Override
public boolean onCreate() {
return true;
}
@Override
public Cursor query(Uri uri, String[] projection, String selection, String[] selectionArgs, String sortOrder) {
String uriPath = uri.getLastPathSegment();
if (uriPath == null) {
return null;
}
if (projection == null) {
projection = new String[] {
BaseColumns._ID,
MediaStore.MediaColumns.DATA,
OpenableColumns.DISPLAY_NAME,
OpenableColumns.SIZE
};
}
// If we receive a query on display name or size,
// we should block until the image is ready
mImageReadyCond.block();
File path = new File(uriPath);
MatrixCursor cursor = new MatrixCursor(projection);
Object[] columns = new Object[projection.length];
for (int i = 0; i < projection.length; i++) {
if (projection[i].equalsIgnoreCase(BaseColumns._ID)) {
columns[i] = 0;
} else if (projection[i].equalsIgnoreCase(MediaStore.MediaColumns.DATA)) {
columns[i] = uri;
} else if (projection[i].equalsIgnoreCase(OpenableColumns.DISPLAY_NAME)) {
columns[i] = path.getName();
} else if (projection[i].equalsIgnoreCase(OpenableColumns.SIZE)) {
columns[i] = path.length();
}
}
cursor.addRow(columns);
return cursor;
}
public ParcelFileDescriptor openFile(Uri uri, String mode)
throws FileNotFoundException {
String uriPath = uri.getLastPathSegment();
if (uriPath == null) {
return null;
}
// Here we need to block until the image is ready
mImageReadyCond.block();
File path = new File(uriPath);
int imode = 0;
imode |= ParcelFileDescriptor.MODE_READ_ONLY;
return ParcelFileDescriptor.open(path, imode);
}
}
|