ESQueue.h revision 386d609dc513e838c7e7c4c46c604493ccd560be 
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 ES_QUEUE_H_
18
19#define ES_QUEUE_H_
20
21#include <media/stagefright/foundation/ABase.h>
22#include <utils/Errors.h>
23#include <utils/List.h>
24#include <utils/RefBase.h>
25
26namespace android {
27
28struct ABuffer;
29struct MetaData;
30
31struct ElementaryStreamQueue {
32    enum Mode {
33        H264,
34        AAC,
35        MPEG_AUDIO,
36        MPEG_VIDEO,
37        MPEG4_VIDEO,
38    };
39    ElementaryStreamQueue(Mode mode);
40
41    status_t appendData(const void *data, size_t size, int64_t timeUs);
42    void clear(bool clearFormat);
43
44    sp<ABuffer> dequeueAccessUnit();
45
46    sp<MetaData> getFormat();
47
48private:
49    struct RangeInfo {
50        int64_t mTimestampUs;
51        size_t mLength;
52    };
53
54    Mode mMode;
55
56    sp<ABuffer> mBuffer;
57    List<RangeInfo> mRangeInfos;
58
59    sp<MetaData> mFormat;
60
61    sp<ABuffer> dequeueAccessUnitH264();
62    sp<ABuffer> dequeueAccessUnitAAC();
63    sp<ABuffer> dequeueAccessUnitMPEGAudio();
64    sp<ABuffer> dequeueAccessUnitMPEGVideo();
65    sp<ABuffer> dequeueAccessUnitMPEG4Video();
66
67    // consume a logical (compressed) access unit of size "size",
68    // returns its timestamp in us (or -1 if no time information).
69    int64_t fetchTimestamp(size_t size);
70
71    DISALLOW_EVIL_CONSTRUCTORS(ElementaryStreamQueue);
72};
73
74}  // namespace android
75
76#endif  // ES_QUEUE_H_
77