NuPlayerSource.h revision 838be3907fc58eab119d7093a3d73be7267bd4d2 
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/ICrypto.h>
24#include <media/mediaplayer.h>
25#include <media/stagefright/foundation/AMessage.h>
26#include <media/stagefright/MetaData.h>
27#include <utils/Vector.h>
28
29namespace android {
30
31struct ABuffer;
32class 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, // Secure codec is required.
42        FLAG_PROTECTED          = 64, // The screen needs to be protected (screenshot is disabled).
43    };
44
45    enum {
46        kWhatPrepared,
47        kWhatFlagsChanged,
48        kWhatVideoSizeChanged,
49        kWhatBufferingUpdate,
50        kWhatPauseOnBufferingStart,
51        kWhatResumeOnBufferingEnd,
52        kWhatCacheStats,
53        kWhatSubtitleData,
54        kWhatTimedTextData,
55        kWhatTimedMetaData,
56        kWhatQueueDecoderShutdown,
57        kWhatDrmNoLicense,
58        kWhatInstantiateSecureDecoders,
59        // Modular DRM
60        kWhatDrmInfo,
61    };
62
63    // The provides message is used to notify the player about various
64    // events.
65    explicit Source(const sp<AMessage> &notify)
66        : mNotify(notify) {
67    }
68
69    virtual status_t getDefaultBufferingSettings(
70            BufferingSettings* buffering /* nonnull */) = 0;
71    virtual status_t setBufferingSettings(const BufferingSettings& buffering) = 0;
72
73    virtual void prepareAsync() = 0;
74
75    virtual void start() = 0;
76    virtual void stop() {}
77    virtual void pause() {}
78    virtual void resume() {}
79
80    // Explicitly disconnect the underling data source
81    virtual void disconnect() {}
82
83    // Returns OK iff more data was available,
84    // an error or ERROR_END_OF_STREAM if not.
85    virtual status_t feedMoreTSData() = 0;
86
87    // Returns non-NULL format when the specified track exists.
88    // When the format has "err" set to -EWOULDBLOCK, source needs more time to get valid meta data.
89    // Returns NULL if the specified track doesn't exist or is invalid;
90    virtual sp<AMessage> getFormat(bool audio);
91
92    virtual sp<MetaData> getFormatMeta(bool /* audio */) { return NULL; }
93    virtual sp<MetaData> getFileFormatMeta() const { return NULL; }
94
95    virtual status_t dequeueAccessUnit(
96            bool audio, sp<ABuffer> *accessUnit) = 0;
97
98    virtual status_t getDuration(int64_t * /* durationUs */) {
99        return INVALID_OPERATION;
100    }
101
102    virtual size_t getTrackCount() const {
103        return 0;
104    }
105
106    virtual sp<AMessage> getTrackInfo(size_t /* trackIndex */) const {
107        return NULL;
108    }
109
110    virtual ssize_t getSelectedTrack(media_track_type /* type */) const {
111        return INVALID_OPERATION;
112    }
113
114    virtual status_t selectTrack(size_t /* trackIndex */, bool /* select */, int64_t /* timeUs*/) {
115        return INVALID_OPERATION;
116    }
117
118    virtual status_t seekTo(
119            int64_t /* seekTimeUs */,
120            MediaPlayerSeekMode /* mode */ = MediaPlayerSeekMode::SEEK_PREVIOUS_SYNC) {
121        return INVALID_OPERATION;
122    }
123
124    virtual status_t setBuffers(bool /* audio */, Vector<MediaBuffer *> &/* buffers */) {
125        return INVALID_OPERATION;
126    }
127
128    virtual bool isRealTime() const {
129        return false;
130    }
131
132    virtual bool isStreaming() const {
133        return true;
134    }
135
136    virtual void setOffloadAudio(bool /* offload */) {}
137
138    // Modular DRM
139    virtual status_t prepareDrm(
140            const uint8_t /*uuid*/[16], const Vector<uint8_t> &/*drmSessionId*/,
141            sp<ICrypto> */*crypto*/) {
142        return INVALID_OPERATION;
143    }
144
145    virtual status_t releaseDrm() {
146        return INVALID_OPERATION;
147    }
148
149protected:
150    virtual ~Source() {}
151
152    virtual void onMessageReceived(const sp<AMessage> &msg);
153
154    sp<AMessage> dupNotify() const { return mNotify->dup(); }
155
156    void notifyFlagsChanged(uint32_t flags);
157    void notifyVideoSizeChanged(const sp<AMessage> &format = NULL);
158    void notifyInstantiateSecureDecoders(const sp<AMessage> &reply);
159    void notifyPrepared(status_t err = OK);
160    // Modular DRM
161    void notifyDrmInfo(const sp<ABuffer> &buffer);
162
163private:
164    sp<AMessage> mNotify;
165
166    DISALLOW_EVIL_CONSTRUCTORS(Source);
167};
168
169}  // namespace android
170
171#endif  // NUPLAYER_SOURCE_H_
172
173