1 /*
2  * Copyright (C) 2009 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 FILE_SOURCE_H_
18 
19 #define FILE_SOURCE_H_
20 
21 #include <stdio.h>
22 
23 #include <media/stagefright/ClearFileSource.h>
24 #include <media/stagefright/MediaErrors.h>
25 #include <utils/threads.h>
26 #include <drm/DrmManagerClient.h>
27 
28 namespace android {
29 
30 class FileSource : public ClearFileSource {
31 public:
32     FileSource(const char *filename);
33     // FileSource takes ownership and will close the fd
34     FileSource(int fd, int64_t offset, int64_t length);
35 
36     virtual ssize_t readAt(off64_t offset, void *data, size_t size);
37 
38     virtual sp<DecryptHandle> DrmInitialization(const char *mime);
39 
40     static bool requiresDrm(int fd, int64_t offset, int64_t length, const char *mime);
41 
42 protected:
43     virtual ~FileSource();
44 
45 private:
46     /*for DRM*/
47     sp<DecryptHandle> mDecryptHandle;
48     DrmManagerClient *mDrmManagerClient;
49     int64_t mDrmBufOffset;
50     ssize_t mDrmBufSize;
51     unsigned char *mDrmBuf;
52 
53     ssize_t readAtDRM_l(off64_t offset, void *data, size_t size);
54 
55     FileSource(const FileSource &);
56     FileSource &operator=(const FileSource &);
57 };
58 
59 }  // namespace android
60 
61 #endif  // FILE_SOURCE_H_
62 
63