1 /* 2 ** 3 ** Copyright 2009, 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_MIDIMETADATARETRIEVER_H 19 #define ANDROID_MIDIMETADATARETRIEVER_H 20 21 #include <utils/threads.h> 22 #include <utils/Errors.h> 23 #include <media/MediaMetadataRetrieverInterface.h> 24 25 #include "MidiFile.h" 26 27 namespace android { 28 29 class MidiMetadataRetriever : public MediaMetadataRetrieverInterface { 30 public: 31 MidiMetadataRetriever() {} 32 ~MidiMetadataRetriever() {} 33 34 virtual status_t setDataSource( 35 const char *url, const KeyedVector<String8, String8> *headers); 36 37 virtual status_t setDataSource(int fd, int64_t offset, int64_t length); 38 virtual const char* extractMetadata(int keyCode); 39 40 private: 41 static const uint32_t MAX_METADATA_STRING_LENGTH = 128; 42 void clearMetadataValues(); 43 44 Mutex mLock; 45 sp<MidiFile> mMidiPlayer; 46 char mMetadataValues[1][MAX_METADATA_STRING_LENGTH]; 47 }; 48 49 }; // namespace android 50 51 #endif // ANDROID_MIDIMETADATARETRIEVER_H 52
