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 <mediadrm/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 
29 namespace android {
30 
31 struct ABuffer;
32 class MediaBuffer;
33 
34 struct 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.
SourceSource65     explicit Source(const sp<AMessage> &notify)
66         : mNotify(notify) {
67     }
68 
69     virtual status_t getBufferingSettings(
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;
stopSource76     virtual void stop() {}
pauseSource77     virtual void pause() {}
resumeSource78     virtual void resume() {}
79 
80     // Explicitly disconnect the underling data source
disconnectSource81     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 
getFormatMetaSource92     virtual sp<MetaData> getFormatMeta(bool /* audio */) { return NULL; }
getFileFormatMetaSource93     virtual sp<MetaData> getFileFormatMeta() const { return NULL; }
94 
95     virtual status_t dequeueAccessUnit(
96             bool audio, sp<ABuffer> *accessUnit) = 0;
97 
getDurationSource98     virtual status_t getDuration(int64_t * /* durationUs */) {
99         return INVALID_OPERATION;
100     }
101 
getTrackCountSource102     virtual size_t getTrackCount() const {
103         return 0;
104     }
105 
getTrackInfoSource106     virtual sp<AMessage> getTrackInfo(size_t /* trackIndex */) const {
107         return NULL;
108     }
109 
getSelectedTrackSource110     virtual ssize_t getSelectedTrack(media_track_type /* type */) const {
111         return INVALID_OPERATION;
112     }
113 
selectTrackSource114     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 
isRealTimeSource124     virtual bool isRealTime() const {
125         return false;
126     }
127 
isStreamingSource128     virtual bool isStreaming() const {
129         return true;
130     }
131 
setOffloadAudioSource132     virtual void setOffloadAudio(bool /* offload */) {}
133 
134     // Modular DRM
prepareDrmSource135     virtual status_t prepareDrm(
136             const uint8_t /*uuid*/[16], const Vector<uint8_t> &/*drmSessionId*/,
137             sp<ICrypto> */*crypto*/) {
138         return INVALID_OPERATION;
139     }
140 
releaseDrmSource141     virtual status_t releaseDrm() {
142         return INVALID_OPERATION;
143     }
144 
145 protected:
~SourceSource146     virtual ~Source() {}
147 
148     virtual void onMessageReceived(const sp<AMessage> &msg);
149 
dupNotifySource150     sp<AMessage> dupNotify() const { return mNotify->dup(); }
151 
152     void notifyFlagsChanged(uint32_t flags);
153     void notifyVideoSizeChanged(const sp<AMessage> &format = NULL);
154     void notifyInstantiateSecureDecoders(const sp<AMessage> &reply);
155     void notifyPrepared(status_t err = OK);
156     // Modular DRM
157     void notifyDrmInfo(const sp<ABuffer> &buffer);
158 
159 private:
160     sp<AMessage> mNotify;
161 
162     DISALLOW_EVIL_CONSTRUCTORS(Source);
163 };
164 
165 }  // namespace android
166 
167 #endif  // NUPLAYER_SOURCE_H_
168 
169