NuPlayerSource.h revision 68fca636ac961c181ee71a49f151c71b564258d0 
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 NUPLAYER_SOURCE_H_
18
19#define NUPLAYER_SOURCE_H_
20
21#include "NuPlayer.h"
22
23#include <media/stagefright/foundation/AMessage.h>
24#include <media/stagefright/MetaData.h>
25#include <media/mediaplayer.h>
26#include <utils/Vector.h>
27
28namespace android {
29
30struct ABuffer;
31struct MetaData;
32struct MediaBuffer;
33
34struct NuPlayer::Source : public AHandler {
35    enum Flags {
36        FLAG_CAN_PAUSE          = 1,
37        FLAG_CAN_SEEK_BACKWARD  = 2,  // the "10 sec back button"
38        FLAG_CAN_SEEK_FORWARD   = 4,  // the "10 sec forward button"
39        FLAG_CAN_SEEK           = 8,  // the "seek bar"
40        FLAG_DYNAMIC_DURATION   = 16,
41        FLAG_SECURE             = 32,
42        FLAG_PROTECTED          = 64,
43    };
44
45    enum {
46        kWhatPrepared,
47        kWhatFlagsChanged,
48        kWhatVideoSizeChanged,
49        kWhatBufferingUpdate,
50        kWhatBufferingStart,
51        kWhatBufferingEnd,
52        kWhatPauseOnBufferingStart,
53        kWhatResumeOnBufferingEnd,
54        kWhatCacheStats,
55        kWhatSubtitleData,
56        kWhatTimedTextData,
57        kWhatQueueDecoderShutdown,
58        kWhatDrmNoLicense,
59        kWhatInstantiateSecureDecoders,
60    };
61
62    // The provides message is used to notify the player about various
63    // events.
64    Source(const sp<AMessage> &notify)
65        : mNotify(notify) {
66    }
67
68    virtual void prepareAsync() = 0;
69
70    virtual void start() = 0;
71    virtual void stop() {}
72    virtual void pause() {}
73    virtual void resume() {}
74
75    // Explicitly disconnect the underling data source
76    virtual void disconnect() {}
77
78    // Returns OK iff more data was available,
79    // an error or ERROR_END_OF_STREAM if not.
80    virtual status_t feedMoreTSData() = 0;
81
82    virtual sp<AMessage> getFormat(bool audio);
83    virtual sp<MetaData> getFormatMeta(bool /* audio */) { return NULL; }
84    virtual sp<MetaData> getFileFormatMeta() const { return NULL; }
85
86    virtual status_t dequeueAccessUnit(
87            bool audio, sp<ABuffer> *accessUnit) = 0;
88
89    virtual status_t getDuration(int64_t * /* durationUs */) {
90        return INVALID_OPERATION;
91    }
92
93    virtual size_t getTrackCount() const {
94        return 0;
95    }
96
97    virtual sp<AMessage> getTrackInfo(size_t /* trackIndex */) const {
98        return NULL;
99    }
100
101    virtual ssize_t getSelectedTrack(media_track_type /* type */) const {
102        return INVALID_OPERATION;
103    }
104
105    virtual status_t selectTrack(size_t /* trackIndex */, bool /* select */, int64_t /* timeUs*/) {
106        return INVALID_OPERATION;
107    }
108
109    virtual status_t seekTo(int64_t /* seekTimeUs */) {
110        return INVALID_OPERATION;
111    }
112
113    virtual status_t setBuffers(bool /* audio */, Vector<MediaBuffer *> &/* buffers */) {
114        return INVALID_OPERATION;
115    }
116
117    virtual bool isRealTime() const {
118        return false;
119    }
120
121protected:
122    virtual ~Source() {}
123
124    virtual void onMessageReceived(const sp<AMessage> &msg);
125
126    sp<AMessage> dupNotify() const { return mNotify->dup(); }
127
128    void notifyFlagsChanged(uint32_t flags);
129    void notifyVideoSizeChanged(const sp<AMessage> &format = NULL);
130    void notifyInstantiateSecureDecoders(const sp<AMessage> &reply);
131    void notifyPrepared(status_t err = OK);
132
133private:
134    sp<AMessage> mNotify;
135
136    DISALLOW_EVIL_CONSTRUCTORS(Source);
137};
138
139}  // namespace android
140
141#endif  // NUPLAYER_SOURCE_H_
142
143