DrmManager.h revision 2272ee27d9022d173b6eab45c409b3c3f57f30ec 
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 DrmRights;
36class DrmInfo;
37class DrmInfoStatus;
38class DrmConvertedStatus;
39class DrmInfoRequest;
40class DrmSupportInfo;
41class ActionDescription;
42
43/**
44 * This is implementation class for DRM Manager. This class delegates the
45 * functionality to corresponding DRM Engine.
46 *
47 * The DrmManagerService class creates an instance of this class.
48 *
49 */
50class DrmManager : public IDrmEngine::OnInfoListener {
51public:
52    DrmManager();
53    virtual ~DrmManager();
54
55public:
56    int addUniqueId(int uniqueId);
57
58    void removeUniqueId(int uniqueId);
59
60    status_t loadPlugIns(int uniqueId);
61
62    status_t loadPlugIns(int uniqueId, const String8& plugInDirPath);
63
64    status_t setDrmServiceListener(
65            int uniqueId, const sp<IDrmServiceListener>& drmServiceListener);
66
67    status_t unloadPlugIns(int uniqueId);
68
69    status_t installDrmEngine(int uniqueId, const String8& drmEngineFile);
70
71    DrmConstraints* getConstraints(int uniqueId, const String8* path, const int action);
72
73    bool canHandle(int uniqueId, const String8& path, const String8& mimeType);
74
75    DrmInfoStatus* processDrmInfo(int uniqueId, const DrmInfo* drmInfo);
76
77    DrmInfo* acquireDrmInfo(int uniqueId, const DrmInfoRequest* drmInfoRequest);
78
79    status_t saveRights(int uniqueId, const DrmRights& drmRights,
80            const String8& rightsPath, const String8& contentPath);
81
82    String8 getOriginalMimeType(int uniqueId, const String8& path);
83
84    int getDrmObjectType(int uniqueId, const String8& path, const String8& mimeType);
85
86    int checkRightsStatus(int uniqueId, const String8& path, int action);
87
88    status_t consumeRights(int uniqueId, DecryptHandle* decryptHandle, int action, bool reserve);
89
90    status_t setPlaybackStatus(
91            int uniqueId, DecryptHandle* decryptHandle, int playbackStatus, int position);
92
93    bool validateAction(
94            int uniqueId, const String8& path, int action, const ActionDescription& description);
95
96    status_t removeRights(int uniqueId, const String8& path);
97
98    status_t removeAllRights(int uniqueId);
99
100    int openConvertSession(int uniqueId, const String8& mimeType);
101
102    DrmConvertedStatus* convertData(int uniqueId, int convertId, const DrmBuffer* inputData);
103
104    DrmConvertedStatus* closeConvertSession(int uniqueId, int convertId);
105
106    status_t getAllSupportInfo(int uniqueId, int* length, DrmSupportInfo** drmSupportInfoArray);
107
108    DecryptHandle* openDecryptSession(int uniqueId, int fd, int offset, int length);
109
110    status_t closeDecryptSession(int uniqueId, DecryptHandle* decryptHandle);
111
112    status_t initializeDecryptUnit(int uniqueId, DecryptHandle* decryptHandle,
113            int decryptUnitId, const DrmBuffer* headerInfo);
114
115    status_t decrypt(int uniqueId, DecryptHandle* decryptHandle, int decryptUnitId,
116            const DrmBuffer* encBuffer, DrmBuffer** decBuffer, DrmBuffer* IV);
117
118    status_t finalizeDecryptUnit(int uniqueId, DecryptHandle* decryptHandle, int decryptUnitId);
119
120    ssize_t pread(int uniqueId, DecryptHandle* decryptHandle,
121            void* buffer, ssize_t numBytes, off_t offset);
122
123    void onInfo(const DrmInfoEvent& event);
124
125private:
126    String8 getSupportedPlugInId(int uniqueId, const String8& path, const String8& mimeType);
127
128    String8 getSupportedPlugInId(const String8& mimeType);
129
130    String8 getSupportedPlugInIdFromPath(int uniqueId, const String8& path);
131
132    void populate(int uniqueId);
133
134    bool canHandle(int uniqueId, const String8& path);
135
136    void initializePlugIns(int uniqueId);
137
138private:
139    static Vector<int> mUniqueIdVector;
140    static const String8 EMPTY_STRING;
141
142    int mDecryptSessionId;
143    int mConvertId;
144    Mutex mLock;
145    Mutex mDecryptLock;
146    Mutex mConvertLock;
147    TPlugInManager<IDrmEngine> mPlugInManager;
148    KeyedVector< DrmSupportInfo, String8 > mSupportInfoToPlugInIdMap;
149    KeyedVector< int, IDrmEngine*> mConvertSessionMap;
150    KeyedVector< int, sp<IDrmServiceListener> > mServiceListeners;
151    KeyedVector< int, IDrmEngine*> mDecryptSessionMap;
152};
153
154};
155
156#endif /* __DRM_MANAGER_H__ */
157
158