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/*
* Copyright (C) 2017 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 android.media;
import android.annotation.NonNull;
import android.annotation.Nullable;
import android.hardware.cas.V1_0.Status;
/**
* Base class for MediaCas runtime exceptions
*/
public class MediaCasStateException extends IllegalStateException {
private final int mErrorCode;
private final String mDiagnosticInfo;
private MediaCasStateException(int err, @Nullable String msg, @Nullable String diagnosticInfo) {
super(msg);
mErrorCode = err;
mDiagnosticInfo = diagnosticInfo;
}
static void throwExceptionIfNeeded(int err) {
throwExceptionIfNeeded(err, null /* msg */);
}
static void throwExceptionIfNeeded(int err, @Nullable String msg) {
if (err == Status.OK) {
return;
}
if (err == Status.BAD_VALUE) {
throw new IllegalArgumentException();
}
String diagnosticInfo = "";
switch (err) {
case Status.ERROR_CAS_UNKNOWN:
diagnosticInfo = "General CAS error";
break;
case Status.ERROR_CAS_NO_LICENSE:
diagnosticInfo = "No license";
break;
case Status.ERROR_CAS_LICENSE_EXPIRED:
diagnosticInfo = "License expired";
break;
case Status.ERROR_CAS_SESSION_NOT_OPENED:
diagnosticInfo = "Session not opened";
break;
case Status.ERROR_CAS_CANNOT_HANDLE:
diagnosticInfo = "Unsupported scheme or data format";
break;
case Status.ERROR_CAS_INVALID_STATE:
diagnosticInfo = "Invalid CAS state";
break;
case Status.ERROR_CAS_INSUFFICIENT_OUTPUT_PROTECTION:
diagnosticInfo = "Insufficient output protection";
break;
case Status.ERROR_CAS_TAMPER_DETECTED:
diagnosticInfo = "Tamper detected";
break;
case Status.ERROR_CAS_DECRYPT_UNIT_NOT_INITIALIZED:
diagnosticInfo = "Not initialized";
break;
case Status.ERROR_CAS_DECRYPT:
diagnosticInfo = "Decrypt error";
break;
default:
diagnosticInfo = "Unknown CAS state exception";
break;
}
throw new MediaCasStateException(err, msg,
String.format("%s (err=%d)", diagnosticInfo, err));
}
/**
* Retrieve the associated error code
*
* @hide
*/
public int getErrorCode() {
return mErrorCode;
}
/**
* Retrieve a developer-readable diagnostic information string
* associated with the exception. Do not show this to end-users,
* since this string will not be localized or generally comprehensible
* to end-users.
*/
@NonNull
public String getDiagnosticInfo() {
return mDiagnosticInfo;
}
}
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