1 /*
2  * Copyright (C) 2017 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 android.media;
18 
19 import android.annotation.NonNull;
20 import android.annotation.Nullable;
21 import android.os.ServiceSpecificException;
22 
23 import static android.media.MediaCasException.*;
24 
25 /**
26  * Base class for MediaCas runtime exceptions
27  */
28 public class MediaCasStateException extends IllegalStateException {
29     private final int mErrorCode;
30     private final String mDiagnosticInfo;
31 
32     /** @hide */
MediaCasStateException(int err, @Nullable String msg, @Nullable String diagnosticInfo)33     public MediaCasStateException(int err, @Nullable String msg, @Nullable String diagnosticInfo) {
34         super(msg);
35         mErrorCode = err;
36         mDiagnosticInfo = diagnosticInfo;
37     }
38 
throwExceptions(ServiceSpecificException e)39     static void throwExceptions(ServiceSpecificException e) {
40         String diagnosticInfo = "";
41         switch (e.errorCode) {
42         case ERROR_DRM_UNKNOWN:
43             diagnosticInfo = "General CAS error";
44             break;
45         case ERROR_DRM_NO_LICENSE:
46             diagnosticInfo = "No license";
47             break;
48         case ERROR_DRM_LICENSE_EXPIRED:
49             diagnosticInfo = "License expired";
50             break;
51         case ERROR_DRM_SESSION_NOT_OPENED:
52             diagnosticInfo = "Session not opened";
53             break;
54         case ERROR_DRM_DECRYPT_UNIT_NOT_INITIALIZED:
55             diagnosticInfo = "Not initialized";
56             break;
57         case ERROR_DRM_DECRYPT:
58             diagnosticInfo = "Decrypt error";
59             break;
60         case ERROR_DRM_CANNOT_HANDLE:
61             diagnosticInfo = "Unsupported scheme or data format";
62             break;
63         case ERROR_DRM_TAMPER_DETECTED:
64             diagnosticInfo = "Tamper detected";
65             break;
66         default:
67             diagnosticInfo = "Unknown CAS state exception";
68             break;
69         }
70         throw new MediaCasStateException(e.errorCode, e.getMessage(),
71                 String.format("%s (err=%d)", diagnosticInfo, e.errorCode));
72     }
73 
74     /**
75      * Retrieve the associated error code
76      *
77      * @hide
78      */
getErrorCode()79     public int getErrorCode() {
80         return mErrorCode;
81     }
82 
83     /**
84      * Retrieve a developer-readable diagnostic information string
85      * associated with the exception. Do not show this to end-users,
86      * since this string will not be localized or generally comprehensible
87      * to end-users.
88      */
89     @NonNull
getDiagnosticInfo()90     public String getDiagnosticInfo() {
91         return mDiagnosticInfo;
92     }
93 }
94