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1  /*
2   * Copyright (C) 2008 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 JETPLAYER_H_
18  #define JETPLAYER_H_
19  
20  #include <utils/threads.h>
21  
22  #include <libsonivox/jet.h>
23  #include <libsonivox/eas_types.h>
24  #include <media/AudioTrack.h>
25  #include <media/MidiIoWrapper.h>
26  
27  
28  namespace android {
29  
30  typedef void (*jetevent_callback)(int eventType, int val1, int val2, void *cookie);
31  
32  class JetPlayer {
33  
34  public:
35  
36      // to keep in sync with the JetPlayer class constants
37      // defined in frameworks/base/media/java/android/media/JetPlayer.java
38      static const int JET_EVENT                   = 1;
39      static const int JET_USERID_UPDATE           = 2;
40      static const int JET_NUMQUEUEDSEGMENT_UPDATE = 3;
41      static const int JET_PAUSE_UPDATE            = 4;
42  
43      JetPlayer(void *javaJetPlayer,
44              int maxTracks = 32,
45              int trackBufferSize = 1200);
46      ~JetPlayer();
47      int init();
48      int release();
49  
50      int loadFromFile(const char* url);
51      int loadFromFD(const int fd, const long long offset, const long long length);
52      int closeFile();
53      int play();
54      int pause();
55      int queueSegment(int segmentNum, int libNum, int repeatCount, int transpose,
56              EAS_U32 muteFlags, EAS_U8 userID);
57      int setMuteFlags(EAS_U32 muteFlags, bool sync);
58      int setMuteFlag(int trackNum, bool muteFlag, bool sync);
59      int triggerClip(int clipId);
60      int clearQueue();
61  
62      void setEventCallback(jetevent_callback callback);
63  
getMaxTracks()64      int getMaxTracks() { return mMaxTracks; };
65  
66  
67  private:
68      int                 render();
69      void                fireUpdateOnStatusChange();
70      void                fireEventsFromJetQueue();
71  
JetPlayer()72      JetPlayer() {} // no default constructor
73      void dump();
74      void dumpJetStatus(S_JET_STATUS* pJetStatus);
75  
76      jetevent_callback   mEventCallback;
77  
78      void*               mJavaJetPlayerRef;
79      Mutex               mMutex; // mutex to sync the render and playback thread with the JET calls
80      pid_t               mTid;
81      Condition           mCondition;
82      volatile bool       mRender;
83      bool                mPaused;
84  
85      EAS_STATE           mState;
86      int*                mMemFailedVar;
87  
88      int                 mMaxTracks; // max number of MIDI tracks, usually 32
89      EAS_DATA_HANDLE     mEasData;
90      sp<MidiIoWrapper>   mIoWrapper;
91      EAS_PCM*            mAudioBuffer;// EAS renders the MIDI data into this buffer,
92      sp<AudioTrack>      mAudioTrack; // and we play it in this audio track
93      int                 mTrackBufferSize;
94      S_JET_STATUS        mJetStatus;
95      S_JET_STATUS        mPreviousJetStatus;
96  
97      class JetPlayerThread : public Thread {
98      public:
JetPlayerThread(JetPlayer * player)99          JetPlayerThread(JetPlayer *player) : mPlayer(player) {
100          }
101  
102      protected:
~JetPlayerThread()103          virtual ~JetPlayerThread() {}
104  
105      private:
106          JetPlayer *mPlayer;
107  
threadLoop()108          bool threadLoop() {
109              int result;
110              result = mPlayer->render();
111              return false;
112          }
113  
114          JetPlayerThread(const JetPlayerThread &);
115          JetPlayerThread &operator=(const JetPlayerThread &);
116      };
117  
118      sp<JetPlayerThread> mThread;
119  
120  }; // end class JetPlayer
121  
122  } // end namespace android
123  
124  
125  
126  #endif /*JETPLAYER_H_*/
127