1 /*
2  * Copyright 2017 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 NUPLAYER2_SOURCE_H_
18 
19 #define NUPLAYER2_SOURCE_H_
20 
21 #include "NuPlayer2.h"
22 
23 #include <media/stagefright/foundation/AMessage.h>
24 #include <media/stagefright/MetaData.h>
25 #include <mediaplayer2/mediaplayer2.h>
26 #include <utils/Vector.h>
27 
28 namespace android {
29 
30 struct ABuffer;
31 struct AMediaCryptoWrapper;
32 class MediaBuffer;
33 
34 struct NuPlayer2::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         // Modular DRM
59         kWhatDrmInfo,
60     };
61 
62     // The provides message is used to notify the player about various
63     // events.
SourceSource64     explicit Source(const sp<AMessage> &notify)
65         : mNotify(notify) {
66     }
67 
68     virtual status_t getBufferingSettings(
69             BufferingSettings* buffering /* nonnull */) = 0;
70     virtual status_t setBufferingSettings(const BufferingSettings& buffering) = 0;
71 
72     virtual void prepareAsync() = 0;
73 
74     virtual void start() = 0;
stopSource75     virtual void stop() {}
pauseSource76     virtual void pause() {}
resumeSource77     virtual void resume() {}
78 
79     // Explicitly disconnect the underling data source
disconnectSource80     virtual void disconnect() {}
81 
82     // Returns OK iff more data was available,
83     // an error or ERROR_END_OF_STREAM if not.
84     virtual status_t feedMoreTSData() = 0;
85 
86     // Returns non-NULL format when the specified track exists.
87     // When the format has "err" set to -EWOULDBLOCK, source needs more time to get valid meta data.
88     // Returns NULL if the specified track doesn't exist or is invalid;
89     virtual sp<AMessage> getFormat(bool audio);
90 
getFormatMetaSource91     virtual sp<MetaData> getFormatMeta(bool /* audio */) { return NULL; }
getFileFormatMetaSource92     virtual sp<MetaData> getFileFormatMeta() const { return NULL; }
93 
94     virtual status_t dequeueAccessUnit(
95             bool audio, sp<ABuffer> *accessUnit) = 0;
96 
getDurationSource97     virtual status_t getDuration(int64_t * /* durationUs */) {
98         return INVALID_OPERATION;
99     }
100 
getTrackCountSource101     virtual size_t getTrackCount() const {
102         return 0;
103     }
104 
getTrackInfoSource105     virtual sp<AMessage> getTrackInfo(size_t /* trackIndex */) const {
106         return NULL;
107     }
108 
getSelectedTrackSource109     virtual ssize_t getSelectedTrack(media_track_type /* type */) const {
110         return INVALID_OPERATION;
111     }
112 
selectTrackSource113     virtual status_t selectTrack(size_t /* trackIndex */, bool /* select */, int64_t /* timeUs*/) {
114         return INVALID_OPERATION;
115     }
116 
117     virtual status_t seekTo(
118             int64_t /* seekTimeUs */,
119             MediaPlayer2SeekMode /* mode */ = MediaPlayer2SeekMode::SEEK_PREVIOUS_SYNC) {
120         return INVALID_OPERATION;
121     }
122 
isRealTimeSource123     virtual bool isRealTime() const {
124         return false;
125     }
126 
isStreamingSource127     virtual bool isStreaming() const {
128         return true;
129     }
130 
setOffloadAudioSource131     virtual void setOffloadAudio(bool /* offload */) {}
132 
133     // Modular DRM
prepareDrmSource134     virtual status_t prepareDrm(
135             const uint8_t /* uuid */[16], const Vector<uint8_t> & /* drmSessionId */,
136             sp<AMediaCryptoWrapper> * /* crypto */) {
137         return INVALID_OPERATION;
138     }
139 
releaseDrmSource140     virtual status_t releaseDrm() {
141         return INVALID_OPERATION;
142     }
143 
144 protected:
~SourceSource145     virtual ~Source() {}
146 
147     virtual void onMessageReceived(const sp<AMessage> &msg);
148 
dupNotifySource149     sp<AMessage> dupNotify() const { return mNotify->dup(); }
150 
151     void notifyFlagsChanged(uint32_t flags);
152     void notifyVideoSizeChanged(const sp<AMessage> &format = NULL);
153     void notifyPrepared(status_t err = OK);
154     // Modular DRM
155     void notifyDrmInfo(const sp<ABuffer> &buffer);
156 
157 private:
158     sp<AMessage> mNotify;
159 
160     DISALLOW_EVIL_CONSTRUCTORS(Source);
161 };
162 
163 }  // namespace android
164 
165 #endif  // NUPLAYER2_SOURCE_H_
166 
167