1/*
2 * Copyright 2015 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 ANDROID_IDATASOURCE_H
18#define ANDROID_IDATASOURCE_H
19
20#include <binder/IInterface.h>
21#include <media/stagefright/foundation/ABase.h>
22#include <utils/Errors.h>
23#include <utils/String8.h>
24
25namespace android {
26
27class IMemory;
28class DecryptHandle;
29
30// A binder interface for implementing a stagefright DataSource remotely.
31class IDataSource : public IInterface {
32public:
33    DECLARE_META_INTERFACE(DataSource);
34
35    // Get the memory that readAt writes into.
36    virtual sp<IMemory> getIMemory() = 0;
37    // Read up to |size| bytes into the memory returned by getIMemory(). Returns
38    // the number of bytes read, or -1 on error. |size| must not be larger than
39    // the buffer.
40    virtual ssize_t readAt(off64_t offset, size_t size) = 0;
41    // Get the size, or -1 if the size is unknown.
42    virtual status_t getSize(off64_t* size) = 0;
43    // This should be called before deleting |this|. The other methods may
44    // return errors if they're called after calling close().
45    virtual void close() = 0;
46    // Get the flags of the source.
47    // Refer to DataSource:Flags for the definition of the flags.
48    virtual uint32_t getFlags() = 0;
49    // get a description of the source, e.g. the url or filename it is based on
50    virtual String8 toString() = 0;
51    // Initialize DRM and return a DecryptHandle.
52    virtual sp<DecryptHandle> DrmInitialization(const char *mime) = 0;
53
54private:
55    DISALLOW_EVIL_CONSTRUCTORS(IDataSource);
56};
57
58// ----------------------------------------------------------------------------
59
60class BnDataSource : public BnInterface<IDataSource> {
61public:
62    virtual status_t onTransact(uint32_t code,
63                                const Parcel& data,
64                                Parcel* reply,
65                                uint32_t flags = 0);
66};
67
68}; // namespace android
69
70#endif // ANDROID_IDATASOURCE_H
71