NuPlayerSource.h revision 48296b792a8d68358de74141fa80bd5bd84d0307 
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    };
43
44    enum {
45        kWhatPrepared,
46        kWhatFlagsChanged,
47        kWhatVideoSizeChanged,
48        kWhatBufferingUpdate,
49        kWhatBufferingStart,
50        kWhatBufferingEnd,
51        kWhatSubtitleData,
52        kWhatTimedTextData,
53        kWhatQueueDecoderShutdown,
54        kWhatDrmNoLicense,
55    };
56
57    // The provides message is used to notify the player about various
58    // events.
59    Source(const sp<AMessage> &notify)
60        : mNotify(notify) {
61    }
62
63    virtual void prepareAsync() = 0;
64
65    virtual void start() = 0;
66    virtual void stop() {}
67    virtual void pause() {}
68    virtual void resume() {}
69
70    // Explicitly disconnect the underling data source
71    virtual void disconnect() {}
72
73    // Returns OK iff more data was available,
74    // an error or ERROR_END_OF_STREAM if not.
75    virtual status_t feedMoreTSData() = 0;
76
77    virtual sp<AMessage> getFormat(bool audio);
78    virtual sp<MetaData> getFormatMeta(bool /* audio */) { return NULL; }
79
80    virtual status_t dequeueAccessUnit(
81            bool audio, sp<ABuffer> *accessUnit) = 0;
82
83    virtual status_t getDuration(int64_t * /* durationUs */) {
84        return INVALID_OPERATION;
85    }
86
87    virtual size_t getTrackCount() const {
88        return 0;
89    }
90
91    virtual sp<AMessage> getTrackInfo(size_t /* trackIndex */) const {
92        return NULL;
93    }
94
95    virtual ssize_t getSelectedTrack(media_track_type /* type */) const {
96        return INVALID_OPERATION;
97    }
98
99    virtual status_t selectTrack(size_t /* trackIndex */, bool /* select */) {
100        return INVALID_OPERATION;
101    }
102
103    virtual status_t seekTo(int64_t /* seekTimeUs */) {
104        return INVALID_OPERATION;
105    }
106
107    virtual status_t setBuffers(bool /* audio */, Vector<MediaBuffer *> &/* buffers */) {
108        return INVALID_OPERATION;
109    }
110
111    virtual bool isRealTime() const {
112        return false;
113    }
114
115protected:
116    virtual ~Source() {}
117
118    virtual void onMessageReceived(const sp<AMessage> &msg);
119
120    sp<AMessage> dupNotify() const { return mNotify->dup(); }
121
122    void notifyFlagsChanged(uint32_t flags);
123    void notifyVideoSizeChanged(const sp<AMessage> &format = NULL);
124    void notifyPrepared(status_t err = OK);
125
126private:
127    sp<AMessage> mNotify;
128
129    DISALLOW_EVIL_CONSTRUCTORS(Source);
130};
131
132}  // namespace android
133
134#endif  // NUPLAYER_SOURCE_H_
135
136