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 27namespace android { 28 29class MidiMetadataRetriever : public MediaMetadataRetrieverInterface { 30public: 31 MidiMetadataRetriever() {} 32 ~MidiMetadataRetriever() {} 33 34 virtual status_t setDataSource( 35 const sp<IMediaHTTPService> &httpService, 36 const char *url, 37 const KeyedVector<String8, String8> *headers); 38 39 virtual status_t setDataSource(int fd, int64_t offset, int64_t length); 40 virtual const char* extractMetadata(int keyCode); 41 42private: 43 static const uint32_t MAX_METADATA_STRING_LENGTH = 128; 44 void clearMetadataValues(); 45 46 Mutex mLock; 47 sp<MidiFile> mMidiPlayer; 48 char mMetadataValues[1][MAX_METADATA_STRING_LENGTH]; 49}; 50 51}; // namespace android 52 53#endif // ANDROID_MIDIMETADATARETRIEVER_H 54