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 XING_SEEKER_H_
18
19#define XING_SEEKER_H_
20
21#include "include/MP3Seeker.h"
22
23namespace android {
24
25class DataSource;
26
27struct XINGSeeker : public MP3Seeker {
28    static sp<XINGSeeker> CreateFromSource(
29            const sp<DataSource> &source, off64_t first_frame_pos);
30
31    virtual bool getDuration(int64_t *durationUs);
32    virtual bool getOffsetForTime(int64_t *timeUs, off64_t *pos);
33
34    virtual int32_t getEncoderDelay();
35    virtual int32_t getEncoderPadding();
36
37private:
38    int64_t mFirstFramePos;
39    int64_t mDurationUs;
40    int32_t mSizeBytes;
41    int32_t mEncoderDelay;
42    int32_t mEncoderPadding;
43
44    // TOC entries in XING header. Skip the first one since it's always 0.
45    unsigned char mTOC[99];
46    bool mTOCValid;
47
48    XINGSeeker();
49
50    DISALLOW_EVIL_CONSTRUCTORS(XINGSeeker);
51};
52
53}  // namespace android
54
55#endif  // XING_SEEKER_H_
56
57