1/*
2 * Copyright (C) 2011 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 AAC_ADTS_EXTRACTOR_H_
18#define AAC_ADTS_EXTRACTOR_H_
19
20#include <utils/Vector.h>
21
22#include <media/stagefright/foundation/ABuffer.h>
23#include <media/stagefright/foundation/ADebug.h>
24#include <media/stagefright/DataSource.h>
25#include <media/stagefright/MediaBufferGroup.h>
26#include <media/stagefright/MediaDefs.h>
27#include <media/stagefright/MediaErrors.h>
28#include <media/stagefright/MediaExtractor.h>
29#include <media/stagefright/MediaSource.h>
30#include <media/stagefright/MetaData.h>
31#include <utils/String8.h>
32
33namespace android {
34
35struct AMessage;
36class String8;
37
38
39class AacAdtsSource : public MediaSource {
40public:
41    AacAdtsSource(const sp<DataSource> &source,
42              const sp<MetaData> &meta,
43              //const Vector<uint64_t> &offset_vector,
44              int64_t frame_duration_us);
45
46    virtual status_t start(MetaData *params = NULL);
47    virtual status_t stop();
48
49    virtual sp<MetaData> getFormat();
50
51    virtual status_t read(
52            MediaBuffer **buffer, const ReadOptions *options = NULL);
53
54protected:
55    virtual ~AacAdtsSource();
56
57private:
58    static const size_t kMaxFrameSize;
59    sp<DataSource> mDataSource;
60    sp<MetaData> mMeta;
61
62    off64_t mOffset;
63    int64_t mCurrentTimeUs;
64    bool mStarted;
65    MediaBufferGroup *mGroup;
66
67    int64_t mFrameDurationUs;
68
69    AacAdtsSource(const AacAdtsSource &);
70    AacAdtsSource &operator=(const AacAdtsSource &);
71};
72
73
74class AacAdtsExtractor : public MediaExtractor {
75public:
76    AacAdtsExtractor(const sp<DataSource> &source);
77
78    virtual size_t countTracks();
79    virtual sp<IMediaSource> getTrack(size_t index);
80    virtual sp<MetaData> getTrackMetaData(size_t index, uint32_t flags);
81
82    virtual sp<MetaData> getMetaData();
83
84protected:
85    virtual ~AacAdtsExtractor();
86
87private:
88    sp<DataSource> mDataSource;
89    sp<MetaData> mMeta;
90    status_t mInitCheck;
91
92    int64_t mFrameDurationUs;
93
94    AacAdtsExtractor(const AacAdtsExtractor &);
95    AacAdtsExtractor &operator=(const AacAdtsExtractor &);
96
97};
98
99}  // namespace android
100
101#endif  // AAC_ADTS_EXTRACTOR_H_
102