MP3Seeker.h revision c7fc37a3dab9bd1f96713649f351b5990e6316ff 
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 MP3_SEEKER_H_
18
19#define MP3_SEEKER_H_
20
21#include <media/stagefright/foundation/ABase.h>
22#include <utils/RefBase.h>
23
24namespace android {
25
26struct MP3Seeker : public RefBase {
27    MP3Seeker() {}
28
29    virtual bool getDuration(int64_t *durationUs) = 0;
30
31    // Given a request seek time in "*timeUs", find the byte offset closest
32    // to that position and return it in "*pos". Update "*timeUs" to reflect
33    // the actual time that seekpoint represents.
34    virtual bool getOffsetForTime(int64_t *timeUs, off64_t *pos) = 0;
35
36protected:
37    virtual ~MP3Seeker() {}
38
39private:
40    DISALLOW_EVIL_CONSTRUCTORS(MP3Seeker);
41};
42
43}  // namespace android
44
45#endif  // MP3_SEEKER_H_
46
47