StreamSource.h revision 4b6f4942fcef3300b407d9a07a680c07b162333f 
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 STREAM_SOURCE_H_
18
19#define STREAM_SOURCE_H_
20
21#include <stdio.h>
22
23#include <core/SkStream.h>
24#include <media/stagefright/DataSource.h>
25#include <media/stagefright/MediaErrors.h>
26#include <utils/threads.h>
27
28namespace android {
29
30class StreamSource : public DataSource {
31public:
32    // Pass the ownership of SkStream to StreamSource.
33    StreamSource(SkStream *SkStream);
34    status_t InitCheck() const;
35    virtual ssize_t read_at(off_t offset, void *data, size_t size);
36    virtual status_t getSize(off_t *size);
37
38protected:
39    virtual ~StreamSource();
40
41private:
42    SkStream *mStream;
43    size_t mSize;
44    Mutex mLock;
45
46    StreamSource(const StreamSource &);
47    StreamSource &operator=(const StreamSource &);
48};
49
50}  // namespace android
51
52#endif  // STREAM_SOURCE_H_
53