GenericSource.h revision ad07410c0a31a474a1fac12f9bbe88287082ed45 
1/*
2 * Copyright (C) 2012 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 GENERIC_SOURCE_H_
18
19#define GENERIC_SOURCE_H_
20
21#include "NuPlayer.h"
22#include "NuPlayerSource.h"
23
24#include "ATSParser.h"
25
26#include <media/mediaplayer.h>
27
28namespace android {
29
30struct AnotherPacketSource;
31struct ARTSPController;
32struct DataSource;
33struct IMediaHTTPService;
34struct MediaSource;
35class MediaBuffer;
36
37struct NuPlayer::GenericSource : public NuPlayer::Source {
38    GenericSource(const sp<AMessage> &notify, bool uidValid, uid_t uid);
39
40    status_t setDataSource(
41            const sp<IMediaHTTPService> &httpService,
42            const char *url,
43            const KeyedVector<String8, String8> *headers);
44
45    status_t setDataSource(int fd, int64_t offset, int64_t length);
46
47    virtual void prepareAsync();
48
49    virtual void start();
50
51    virtual status_t feedMoreTSData();
52
53    virtual status_t dequeueAccessUnit(bool audio, sp<ABuffer> *accessUnit);
54
55    virtual status_t getDuration(int64_t *durationUs);
56    virtual size_t getTrackCount() const;
57    virtual sp<AMessage> getTrackInfo(size_t trackIndex) const;
58    virtual ssize_t getSelectedTrack(media_track_type type) const;
59    virtual status_t selectTrack(size_t trackIndex, bool select);
60    virtual status_t seekTo(int64_t seekTimeUs);
61
62    virtual status_t setBuffers(bool audio, Vector<MediaBuffer *> &buffers);
63
64protected:
65    virtual ~GenericSource();
66
67    virtual void onMessageReceived(const sp<AMessage> &msg);
68
69    virtual sp<MetaData> getFormatMeta(bool audio);
70
71private:
72    enum {
73        kWhatPrepareAsync,
74        kWhatFetchSubtitleData,
75        kWhatFetchTimedTextData,
76        kWhatSendSubtitleData,
77        kWhatSendTimedTextData,
78        kWhatChangeAVSource,
79    };
80
81    Vector<sp<MediaSource> > mSources;
82
83    struct Track {
84        size_t mIndex;
85        sp<MediaSource> mSource;
86        sp<AnotherPacketSource> mPackets;
87    };
88
89    Track mAudioTrack;
90    Track mVideoTrack;
91    Track mSubtitleTrack;
92    Track mTimedTextTrack;
93
94    int32_t mFetchSubtitleDataGeneration;
95    int32_t mFetchTimedTextDataGeneration;
96    int64_t mDurationUs;
97    bool mAudioIsVorbis;
98    bool mIsWidevine;
99    bool mUIDValid;
100    uid_t mUID;
101    sp<IMediaHTTPService> mHTTPService;
102    AString mUri;
103    KeyedVector<String8, String8> mUriHeaders;
104    int mFd;
105    int64_t mOffset;
106    int64_t mLength;
107
108    sp<ALooper> mLooper;
109
110
111    void resetDataSource();
112
113    status_t initFromDataSource(
114            const sp<DataSource> &dataSource,
115            const char *mime);
116
117    void onPrepareAsync();
118
119    void fetchTextData(
120            uint32_t what, media_track_type type,
121            int32_t curGen, sp<AnotherPacketSource> packets, sp<AMessage> msg);
122
123    void sendTextData(
124            uint32_t what, media_track_type type,
125            int32_t curGen, sp<AnotherPacketSource> packets, sp<AMessage> msg);
126
127    sp<ABuffer> mediaBufferToABuffer(
128            MediaBuffer *mbuf,
129            media_track_type trackType,
130            int64_t *actualTimeUs = NULL);
131
132    void readBuffer(
133            media_track_type trackType,
134            int64_t seekTimeUs = -1ll, int64_t *actualTimeUs = NULL, bool formatChange = false);
135
136    DISALLOW_EVIL_CONSTRUCTORS(GenericSource);
137};
138
139}  // namespace android
140
141#endif  // GENERIC_SOURCE_H_
142