NuPlayerSource.h revision 2c9a30a341e50f53039e1b7da96dfa91104fdd62 
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;
31class MediaBuffer;
32
33struct NuPlayer::Source : public AHandler {
34    enum Flags {
35        FLAG_CAN_PAUSE          = 1,
36        FLAG_CAN_SEEK_BACKWARD  = 2,  // the "10 sec back button"
37        FLAG_CAN_SEEK_FORWARD   = 4,  // the "10 sec forward button"
38        FLAG_CAN_SEEK           = 8,  // the "seek bar"
39        FLAG_DYNAMIC_DURATION   = 16,
40        FLAG_SECURE             = 32,
41        FLAG_PROTECTED          = 64,
42    };
43
44    enum {
45        kWhatPrepared,
46        kWhatFlagsChanged,
47        kWhatVideoSizeChanged,
48        kWhatBufferingUpdate,
49        kWhatPauseOnBufferingStart,
50        kWhatResumeOnBufferingEnd,
51        kWhatCacheStats,
52        kWhatSubtitleData,
53        kWhatTimedTextData,
54        kWhatTimedMetaData,
55        kWhatQueueDecoderShutdown,
56        kWhatDrmNoLicense,
57        kWhatInstantiateSecureDecoders,
58    };
59
60    // The provides message is used to notify the player about various
61    // events.
62    Source(const sp<AMessage> &notify)
63        : mNotify(notify) {
64    }
65
66    virtual void prepareAsync() = 0;
67
68    virtual void start() = 0;
69    virtual void stop() {}
70    virtual void pause() {}
71    virtual void resume() {}
72
73    // Explicitly disconnect the underling data source
74    virtual void disconnect() {}
75
76    // Returns OK iff more data was available,
77    // an error or ERROR_END_OF_STREAM if not.
78    virtual status_t feedMoreTSData() = 0;
79
80    virtual sp<AMessage> getFormat(bool audio);
81    virtual sp<MetaData> getFormatMeta(bool /* audio */) { return NULL; }
82    virtual sp<MetaData> getFileFormatMeta() const { return NULL; }
83
84    virtual status_t dequeueAccessUnit(
85            bool audio, sp<ABuffer> *accessUnit) = 0;
86
87    virtual status_t getDuration(int64_t * /* durationUs */) {
88        return INVALID_OPERATION;
89    }
90
91    virtual size_t getTrackCount() const {
92        return 0;
93    }
94
95    virtual sp<AMessage> getTrackInfo(size_t /* trackIndex */) const {
96        return NULL;
97    }
98
99    virtual ssize_t getSelectedTrack(media_track_type /* type */) const {
100        return INVALID_OPERATION;
101    }
102
103    virtual status_t selectTrack(size_t /* trackIndex */, bool /* select */, int64_t /* timeUs*/) {
104        return INVALID_OPERATION;
105    }
106
107    virtual status_t seekTo(int64_t /* seekTimeUs */) {
108        return INVALID_OPERATION;
109    }
110
111    virtual status_t setBuffers(bool /* audio */, Vector<MediaBuffer *> &/* buffers */) {
112        return INVALID_OPERATION;
113    }
114
115    virtual bool isRealTime() const {
116        return false;
117    }
118
119    virtual bool isStreaming() const {
120        return true;
121    }
122
123    virtual void setOffloadAudio(bool /* offload */) {}
124
125protected:
126    virtual ~Source() {}
127
128    virtual void onMessageReceived(const sp<AMessage> &msg);
129
130    sp<AMessage> dupNotify() const { return mNotify->dup(); }
131
132    void notifyFlagsChanged(uint32_t flags);
133    void notifyVideoSizeChanged(const sp<AMessage> &format = NULL);
134    void notifyInstantiateSecureDecoders(const sp<AMessage> &reply);
135    void notifyPrepared(status_t err = OK);
136
137private:
138    sp<AMessage> mNotify;
139
140    DISALLOW_EVIL_CONSTRUCTORS(Source);
141};
142
143}  // namespace android
144
145#endif  // NUPLAYER_SOURCE_H_
146
147