M3UParser.h revision 89bf2525c5b57f17260de5b00c5f3f78ac4b881e 
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 M3U_PARSER_H_
18
19#define M3U_PARSER_H_
20
21#include <media/stagefright/foundation/ABase.h>
22#include <media/stagefright/foundation/AMessage.h>
23#include <media/stagefright/foundation/AString.h>
24#include <media/mediaplayer.h>
25#include <utils/Vector.h>
26
27namespace android {
28
29struct M3UParser : public RefBase {
30    M3UParser(const char *baseURI, const void *data, size_t size);
31
32    status_t initCheck() const;
33
34    bool isExtM3U() const;
35    bool isVariantPlaylist() const;
36    bool isComplete() const;
37    bool isEvent() const;
38    size_t getDiscontinuitySeq() const;
39
40    sp<AMessage> meta();
41
42    size_t size();
43    bool itemAt(size_t index, AString *uri, sp<AMessage> *meta = NULL);
44
45    void pickRandomMediaItems();
46    status_t selectTrack(size_t index, bool select);
47    size_t getTrackCount() const;
48    sp<AMessage> getTrackInfo(size_t index) const;
49    ssize_t getSelectedIndex() const;
50    ssize_t getSelectedTrack(media_track_type /* type */) const;
51
52    bool getTypeURI(size_t index, const char *key, AString *uri) const;
53
54protected:
55    virtual ~M3UParser();
56
57private:
58    struct MediaGroup;
59
60    struct Item {
61        AString mURI;
62        sp<AMessage> mMeta;
63    };
64
65    status_t mInitCheck;
66
67    AString mBaseURI;
68    bool mIsExtM3U;
69    bool mIsVariantPlaylist;
70    bool mIsComplete;
71    bool mIsEvent;
72    size_t mDiscontinuitySeq;
73
74    sp<AMessage> mMeta;
75    Vector<Item> mItems;
76    ssize_t mSelectedIndex;
77
78    // Media groups keyed by group ID.
79    KeyedVector<AString, sp<MediaGroup> > mMediaGroups;
80
81    status_t parse(const void *data, size_t size);
82
83    static status_t parseMetaData(
84            const AString &line, sp<AMessage> *meta, const char *key);
85
86    static status_t parseMetaDataDuration(
87            const AString &line, sp<AMessage> *meta, const char *key);
88
89    status_t parseStreamInf(
90            const AString &line, sp<AMessage> *meta) const;
91
92    static status_t parseCipherInfo(
93            const AString &line, sp<AMessage> *meta, const AString &baseURI);
94
95    static status_t parseByteRange(
96            const AString &line, uint64_t curOffset,
97            uint64_t *length, uint64_t *offset);
98
99    status_t parseMedia(const AString &line);
100
101    static status_t parseDiscontinuitySequence(const AString &line, size_t *seq);
102
103    static status_t ParseInt32(const char *s, int32_t *x);
104    static status_t ParseDouble(const char *s, double *x);
105
106    static bool isQuotedString(const AString &str);
107    static AString unquoteString(const AString &str);
108    static bool codecIsType(const AString &codec, const char *type);
109
110    DISALLOW_EVIL_CONSTRUCTORS(M3UParser);
111};
112
113}  // namespace android
114
115#endif  // M3U_PARSER_H_
116