android_StreamPlayer.h revision 70c49ae2867094072a4365423417ea452bf82231 
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#include <binder/IServiceManager.h>
18
19
20//--------------------------------------------------------------------------------------------------
21namespace android {
22
23//--------------------------------------------------------------------------------------------------
24class StreamSourceAppProxy : public BnStreamSource {
25public:
26    StreamSourceAppProxy(
27            const void* user, bool userIsAudioPlayer,
28            void *appContext,
29            const void *caller);
30    virtual ~StreamSourceAppProxy();
31
32    // IStreamSource implementation
33    virtual void setListener(const sp<IStreamListener> &listener);
34    virtual void setBuffers(const Vector<sp<IMemory> > &buffers);
35    virtual void onBufferAvailable(size_t index);
36
37    // Consumption from ABQ
38    void pullFromBuffQueue();
39
40    void receivedCmd_l(IStreamListener::Command cmd, const sp<AMessage> &msg = NULL);
41    void receivedBuffer_l(size_t buffIndex, size_t buffLength);
42
43private:
44    // for mListener and mAvailableBuffers
45    Mutex mLock;
46    sp<IStreamListener> mListener;
47    // array of shared memory buffers
48    Vector<sp<IMemory> > mBuffers;
49    // list of available buffers in shared memory, identified by their index
50    List<size_t> mAvailableBuffers;
51
52    const void* mUser;
53    bool mUserIsAudioPlayer;
54    // the Android Buffer Queue from which data is consumed and written to shared memory
55    IAndroidBufferQueue* mAndroidBufferQueue;
56
57    void *mAppContext;
58    const void *mCaller;
59
60    DISALLOW_EVIL_CONSTRUCTORS(StreamSourceAppProxy);
61};
62
63
64//--------------------------------------------------------------------------------------------------
65class StreamPlayer : public GenericMediaPlayer
66{
67public:
68    StreamPlayer(AudioPlayback_Parameters* params, bool hasVideo);
69    virtual ~StreamPlayer();
70
71    // overridden from GenericPlayer
72    virtual void onMessageReceived(const sp<AMessage> &msg);
73
74    void registerQueueCallback(
75            const void* user, bool userIsAudioPlayer,
76            void *context,
77            const void *caller);
78    void queueRefilled_l();
79    void appClear();
80
81protected:
82
83    enum {
84        // message to asynchronously notify mAppProxy the Android Buffer Queue was refilled
85        kWhatQueueRefilled = 'qrfi'
86    };
87
88    sp<StreamSourceAppProxy> mAppProxy; // application proxy for the android buffer queue source
89
90    // overridden from GenericMediaPlayer
91    virtual void onPrepare();
92
93    void onQueueRefilled();
94
95    Mutex mAppProxyLock;
96
97
98private:
99    DISALLOW_EVIL_CONSTRUCTORS(StreamPlayer);
100};
101
102} // namespace android
103
104
105//--------------------------------------------------------------------------------------------------
106/*
107 * xxx_l functions are called with a lock on the CAudioPlayer mObject
108 */
109extern void android_StreamPlayer_realize_l(CAudioPlayer *ap, const notif_cbf_t cbf,
110        void* notifUser);
111extern void android_StreamPlayer_clear_l(CAudioPlayer *ap);
112