FileSource.h revision e2b43843fd12783188edd2c54188ea8d26864788 
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/DataSource.h>
24#include <media/stagefright/MediaErrors.h>
25#include <utils/threads.h>
26#include <drm/DrmManagerClient.h>
27
28namespace android {
29
30class FileSource : public DataSource {
31public:
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 status_t initCheck() const;
37
38    virtual ssize_t readAt(off64_t offset, void *data, size_t size);
39
40    virtual status_t getSize(off64_t *size);
41
42    virtual uint32_t flags() {
43        return kIsLocalFileSource;
44    }
45
46    virtual sp<DecryptHandle> DrmInitialization(const char *mime);
47
48    virtual void getDrmInfo(sp<DecryptHandle> &handle, DrmManagerClient **client);
49
50    virtual String8 toString() {
51        return mName;
52    }
53
54protected:
55    virtual ~FileSource();
56
57private:
58    int mFd;
59    int64_t mOffset;
60    int64_t mLength;
61    Mutex mLock;
62    String8 mName;
63
64    /*for DRM*/
65    sp<DecryptHandle> mDecryptHandle;
66    DrmManagerClient *mDrmManagerClient;
67    int64_t mDrmBufOffset;
68    ssize_t mDrmBufSize;
69    unsigned char *mDrmBuf;
70
71    ssize_t readAtDRM(off64_t offset, void *data, size_t size);
72
73    FileSource(const FileSource &);
74    FileSource &operator=(const FileSource &);
75};
76
77}  // namespace android
78
79#endif  // FILE_SOURCE_H_
80
81