137 lines
3.4 KiB
Java
137 lines
3.4 KiB
Java
/*
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* Copyright (C) 2007 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package android.drm.mobile1;
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/**
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* This class provides interfaces to access the DRM rights.
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*/
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public class DrmRights {
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/**
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* The DRM permission of play.
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*/
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public static final int DRM_PERMISSION_PLAY = 1;
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/**
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* The DRM permission of display.
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*/
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public static final int DRM_PERMISSION_DISPLAY = 2;
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/**
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* The DRM permission of execute.
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*/
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public static final int DRM_PERMISSION_EXECUTE = 3;
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/**
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* The DRM permission of print.
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*/
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public static final int DRM_PERMISSION_PRINT = 4;
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/**
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* Successful operation.
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*/
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private static final int JNI_DRM_SUCCESS = 0;
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/**
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* General failure.
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*/
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private static final int JNI_DRM_FAILURE = -1;
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/**
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* The uid of this rights object.
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*/
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private String roId = "";
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/**
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* Construct the DrmRights.
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*/
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public DrmRights() {
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}
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/**
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* Get the constraint of the given permission on this rights object.
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*
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* @param permission the given permission.
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*
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* @return a DrmConstraint instance.
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*/
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public DrmConstraintInfo getConstraint(int permission) {
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DrmConstraintInfo c = new DrmConstraintInfo();
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/* call native method to get latest constraint information */
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int res = nativeGetConstraintInfo(permission, c);
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if (JNI_DRM_FAILURE == res)
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return null;
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return c;
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}
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/**
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* Consume the rights of the given permission.
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*
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* @param permission the given permission.
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*
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* @return true if consume success.
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* false if consume failure.
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*/
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public boolean consumeRights(int permission) {
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/* call native method to consume and update rights */
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int res = nativeConsumeRights(permission);
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if (JNI_DRM_FAILURE == res)
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return false;
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return true;
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}
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/**
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* native method: get the constraint information of the given permission.
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*
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* @param permission the given permission.
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* @param constraint the instance of constraint.
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*
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* @return #JNI_DRM_SUCCESS if succeed.
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* #JNI_DRM_FAILURE if fail.
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*/
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private native int nativeGetConstraintInfo(int permission, DrmConstraintInfo constraint);
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/**
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* native method: consume the rights of the given permission.
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*
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* @param permission the given permission.
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*
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* @return #JNI_DRM_SUCCESS if succeed.
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* #JNI_DRM_FAILURE if fail.
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*/
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private native int nativeConsumeRights(int permission);
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/**
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* Load the shared library to link the native methods.
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*/
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static {
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try {
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System.loadLibrary("drm1_jni");
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}
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catch (UnsatisfiedLinkError ule) {
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System.err.println("WARNING: Could not load libdrm1_jni.so");
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}
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}
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}
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