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      1 /*
      2 **
      3 ** Copyright 2008, The Android Open Source Project
      4 **
      5 ** Licensed under the Apache License, Version 2.0 (the "License");
      6 ** you may not use this file except in compliance with the License.
      7 ** You may obtain a copy of the License at
      8 **
      9 **     http://www.apache.org/licenses/LICENSE-2.0
     10 **
     11 ** Unless required by applicable law or agreed to in writing, software
     12 ** distributed under the License is distributed on an "AS IS" BASIS,
     13 ** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     14 ** See the License for the specific language governing permissions and
     15 ** limitations under the License.
     16 */
     17 
     18 #ifndef ANDROID_MIDIFILE_H
     19 #define ANDROID_MIDIFILE_H
     20 
     21 #include <media/MediaPlayerInterface.h>
     22 #include <libsonivox/eas.h>
     23 
     24 namespace android {
     25 
     26 // Note that the name MidiFile is misleading; this actually represents a MIDI file player
     27 class MidiFile : public MediaPlayerInterface {
     28 public:
     29                         MidiFile();
     30                         ~MidiFile();
     31 
     32     virtual status_t    initCheck();
     33 
     34     virtual status_t    setDataSource(
     35             const char* path, const KeyedVector<String8, String8> *headers);
     36 
     37     virtual status_t    setDataSource(int fd, int64_t offset, int64_t length);
     38     virtual status_t    setVideoSurfaceTexture(
     39                                 const sp<IGraphicBufferProducer>& bufferProducer)
     40                             { return UNKNOWN_ERROR; }
     41     virtual status_t    prepare();
     42     virtual status_t    prepareAsync();
     43     virtual status_t    start();
     44     virtual status_t    stop();
     45     virtual status_t    seekTo(int msec);
     46     virtual status_t    pause();
     47     virtual bool        isPlaying();
     48     virtual status_t    getCurrentPosition(int* msec);
     49     virtual status_t    getDuration(int* msec);
     50     virtual status_t    release();
     51     virtual status_t    reset();
     52     virtual status_t    setLooping(int loop);
     53     virtual player_type playerType() { return SONIVOX_PLAYER; }
     54     virtual status_t    invoke(const Parcel& request, Parcel *reply) {
     55         return INVALID_OPERATION;
     56     }
     57     virtual status_t    setParameter(int key, const Parcel &request) {
     58         return INVALID_OPERATION;
     59     }
     60     virtual status_t    getParameter(int key, Parcel *reply) {
     61         return INVALID_OPERATION;
     62     }
     63 
     64 
     65 private:
     66             status_t    createOutputTrack();
     67             status_t    reset_nosync();
     68             int         render();
     69             void        updateState(){ EAS_State(mEasData, mEasHandle, &mState); }
     70 
     71     Mutex               mMutex;
     72     Condition           mCondition;
     73     EAS_DATA_HANDLE     mEasData;
     74     EAS_HANDLE          mEasHandle;
     75     EAS_PCM*            mAudioBuffer;
     76     EAS_I32             mPlayTime;
     77     EAS_I32             mDuration;
     78     EAS_STATE           mState;
     79     EAS_FILE            mFileLocator;
     80     audio_stream_type_t mStreamType;
     81     bool                mLoop;
     82     volatile bool       mExit;
     83     bool                mPaused;
     84     volatile bool       mRender;
     85     pid_t               mTid;
     86 
     87     class MidiFileThread : public Thread {
     88     public:
     89         MidiFileThread(MidiFile *midiPlayer) : mMidiFile(midiPlayer) {
     90         }
     91 
     92     protected:
     93         virtual ~MidiFileThread() {}
     94 
     95     private:
     96         MidiFile *mMidiFile;
     97 
     98         bool threadLoop() {
     99             int result;
    100             result = mMidiFile->render();
    101             return false;
    102         }
    103 
    104         MidiFileThread(const MidiFileThread &);
    105         MidiFileThread &operator=(const MidiFileThread &);
    106     };
    107 
    108     sp<MidiFileThread> mThread;
    109 };
    110 
    111 }; // namespace android
    112 
    113 #endif // ANDROID_MIDIFILE_H
    114