NuPlayerSource.h revision efbb61950db36a5eb789be83f077246172507c67 
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    };
60
61    // The provides message is used to notify the player about various
62    // events.
63    Source(const sp<AMessage> &notify)
64        : mNotify(notify) {
65    }
66
67    virtual void prepareAsync() = 0;
68
69    virtual void start() = 0;
70    virtual void stop() {}
71    virtual void pause() {}
72    virtual void resume() {}
73
74    // Explicitly disconnect the underling data source
75    virtual void disconnect() {}
76
77    // Returns OK iff more data was available,
78    // an error or ERROR_END_OF_STREAM if not.
79    virtual status_t feedMoreTSData() = 0;
80
81    virtual sp<AMessage> getFormat(bool audio);
82    virtual sp<MetaData> getFormatMeta(bool /* audio */) { return NULL; }
83    virtual sp<MetaData> getFileFormatMeta() const { return NULL; }
84
85    virtual status_t dequeueAccessUnit(
86            bool audio, sp<ABuffer> *accessUnit) = 0;
87
88    virtual status_t getDuration(int64_t * /* durationUs */) {
89        return INVALID_OPERATION;
90    }
91
92    virtual size_t getTrackCount() const {
93        return 0;
94    }
95
96    virtual sp<AMessage> getTrackInfo(size_t /* trackIndex */) const {
97        return NULL;
98    }
99
100    virtual ssize_t getSelectedTrack(media_track_type /* type */) const {
101        return INVALID_OPERATION;
102    }
103
104    virtual status_t selectTrack(size_t /* trackIndex */, bool /* select */, int64_t /* timeUs*/) {
105        return INVALID_OPERATION;
106    }
107
108    virtual status_t seekTo(int64_t /* seekTimeUs */) {
109        return INVALID_OPERATION;
110    }
111
112    virtual status_t setBuffers(bool /* audio */, Vector<MediaBuffer *> &/* buffers */) {
113        return INVALID_OPERATION;
114    }
115
116    virtual bool isRealTime() const {
117        return false;
118    }
119
120protected:
121    virtual ~Source() {}
122
123    virtual void onMessageReceived(const sp<AMessage> &msg);
124
125    sp<AMessage> dupNotify() const { return mNotify->dup(); }
126
127    void notifyFlagsChanged(uint32_t flags);
128    void notifyVideoSizeChanged(const sp<AMessage> &format = NULL);
129    void notifyPrepared(status_t err = OK);
130
131private:
132    sp<AMessage> mNotify;
133
134    DISALLOW_EVIL_CONSTRUCTORS(Source);
135};
136
137}  // namespace android
138
139#endif  // NUPLAYER_SOURCE_H_
140
141