ATSParser.h revision bc7f5b2e56107cfeaeeab13cf8979379e3c2f139 
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 A_TS_PARSER_H_
18
19#define A_TS_PARSER_H_
20
21#include <sys/types.h>
22
23#include <media/stagefright/foundation/ABase.h>
24#include <media/stagefright/foundation/AMessage.h>
25#include <utils/Vector.h>
26#include <utils/RefBase.h>
27
28namespace android {
29
30struct ABitReader;
31struct ABuffer;
32struct MediaSource;
33
34struct ATSParser : public RefBase {
35    enum DiscontinuityType {
36        DISCONTINUITY_NONE,
37        DISCONTINUITY_HTTPLIVE,
38        DISCONTINUITY_SEEK,
39        DISCONTINUITY_FORMATCHANGE
40    };
41
42    ATSParser();
43
44    void feedTSPacket(const void *data, size_t size);
45    void signalDiscontinuity(DiscontinuityType type);
46    void signalEOS(status_t finalResult);
47
48    enum SourceType {
49        AVC_VIDEO,
50        MPEG2ADTS_AUDIO
51    };
52    sp<MediaSource> getSource(SourceType type);
53
54    bool PTSTimeDeltaEstablished();
55
56protected:
57    virtual ~ATSParser();
58
59private:
60    struct Program;
61    struct Stream;
62
63    Vector<sp<Program> > mPrograms;
64
65    void parseProgramAssociationTable(ABitReader *br);
66    void parseProgramMap(ABitReader *br);
67    void parsePES(ABitReader *br);
68
69    void parsePID(
70        ABitReader *br, unsigned PID,
71        unsigned payload_unit_start_indicator);
72
73    void parseAdaptationField(ABitReader *br);
74    void parseTS(ABitReader *br);
75
76    DISALLOW_EVIL_CONSTRUCTORS(ATSParser);
77};
78
79}  // namespace android
80
81#endif  // A_TS_PARSER_H_
82