DrmManager.h revision 3473846f64f5b28e1cbeb70ef5867073fc93159e 
1/*
2 * Copyright (C) 2010 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#ifndef __DRM_MANAGER_H__
18#define __DRM_MANAGER_H__
19
20#include <utils/Errors.h>
21#include <utils/threads.h>
22#include <drm/drm_framework_common.h>
23#include "IDrmEngine.h"
24#include "PlugInManager.h"
25#include "IDrmServiceListener.h"
26
27namespace android {
28
29class IDrmManager;
30class DrmRegistrationInfo;
31class DrmUnregistrationInfo;
32class DrmRightsAcquisitionInfo;
33class DrmContentIds;
34class DrmConstraints;
35class DrmMetadata;
36class DrmRights;
37class DrmInfo;
38class DrmInfoStatus;
39class DrmConvertedStatus;
40class DrmInfoRequest;
41class DrmSupportInfo;
42class ActionDescription;
43
44/**
45 * This is implementation class for DRM Manager. This class delegates the
46 * functionality to corresponding DRM Engine.
47 *
48 * The DrmManagerService class creates an instance of this class.
49 *
50 */
51class DrmManager : public IDrmEngine::OnInfoListener {
52public:
53    DrmManager();
54    virtual ~DrmManager();
55
56public:
57    int addUniqueId(int uniqueId);
58
59    void removeUniqueId(int uniqueId);
60
61    void addClient(int uniqueId);
62
63    void removeClient(int uniqueId);
64
65    status_t loadPlugIns();
66
67    status_t loadPlugIns(const String8& plugInDirPath);
68
69    status_t unloadPlugIns();
70
71    status_t setDrmServiceListener(
72            int uniqueId, const sp<IDrmServiceListener>& drmServiceListener);
73
74    status_t installDrmEngine(int uniqueId, const String8& drmEngineFile);
75
76    DrmConstraints* getConstraints(int uniqueId, const String8* path, const int action);
77
78    DrmMetadata* getMetadata(int uniqueId, const String8* path);
79
80    bool canHandle(int uniqueId, const String8& path, const String8& mimeType);
81
82    DrmInfoStatus* processDrmInfo(int uniqueId, const DrmInfo* drmInfo);
83
84    DrmInfo* acquireDrmInfo(int uniqueId, const DrmInfoRequest* drmInfoRequest);
85
86    status_t saveRights(int uniqueId, const DrmRights& drmRights,
87            const String8& rightsPath, const String8& contentPath);
88
89    String8 getOriginalMimeType(int uniqueId, const String8& path);
90
91    int getDrmObjectType(int uniqueId, const String8& path, const String8& mimeType);
92
93    int checkRightsStatus(int uniqueId, const String8& path, int action);
94
95    status_t consumeRights(int uniqueId, DecryptHandle* decryptHandle, int action, bool reserve);
96
97    status_t setPlaybackStatus(
98            int uniqueId, DecryptHandle* decryptHandle, int playbackStatus, int position);
99
100    bool validateAction(
101            int uniqueId, const String8& path, int action, const ActionDescription& description);
102
103    status_t removeRights(int uniqueId, const String8& path);
104
105    status_t removeAllRights(int uniqueId);
106
107    int openConvertSession(int uniqueId, const String8& mimeType);
108
109    DrmConvertedStatus* convertData(int uniqueId, int convertId, const DrmBuffer* inputData);
110
111    DrmConvertedStatus* closeConvertSession(int uniqueId, int convertId);
112
113    status_t getAllSupportInfo(int uniqueId, int* length, DrmSupportInfo** drmSupportInfoArray);
114
115    DecryptHandle* openDecryptSession(int uniqueId, int fd, int offset, int length);
116
117    DecryptHandle* openDecryptSession(int uniqueId, const char* uri);
118
119    status_t closeDecryptSession(int uniqueId, DecryptHandle* decryptHandle);
120
121    status_t initializeDecryptUnit(int uniqueId, DecryptHandle* decryptHandle,
122            int decryptUnitId, const DrmBuffer* headerInfo);
123
124    status_t decrypt(int uniqueId, DecryptHandle* decryptHandle, int decryptUnitId,
125            const DrmBuffer* encBuffer, DrmBuffer** decBuffer, DrmBuffer* IV);
126
127    status_t finalizeDecryptUnit(int uniqueId, DecryptHandle* decryptHandle, int decryptUnitId);
128
129    ssize_t pread(int uniqueId, DecryptHandle* decryptHandle,
130            void* buffer, ssize_t numBytes, off_t offset);
131
132    void onInfo(const DrmInfoEvent& event);
133
134private:
135    String8 getSupportedPlugInId(int uniqueId, const String8& path, const String8& mimeType);
136
137    String8 getSupportedPlugInId(const String8& mimeType);
138
139    String8 getSupportedPlugInIdFromPath(int uniqueId, const String8& path);
140
141    bool canHandle(int uniqueId, const String8& path);
142
143private:
144    static Vector<int> mUniqueIdVector;
145    static const String8 EMPTY_STRING;
146
147    int mDecryptSessionId;
148    int mConvertId;
149    Mutex mLock;
150    Mutex mDecryptLock;
151    Mutex mConvertLock;
152    TPlugInManager<IDrmEngine> mPlugInManager;
153    KeyedVector< DrmSupportInfo, String8 > mSupportInfoToPlugInIdMap;
154    KeyedVector< int, IDrmEngine*> mConvertSessionMap;
155    KeyedVector< int, sp<IDrmServiceListener> > mServiceListeners;
156    KeyedVector< int, IDrmEngine*> mDecryptSessionMap;
157};
158
159};
160
161#endif /* __DRM_MANAGER_H__ */
162
163