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96 lines
2.6 KiB
96 lines
2.6 KiB
/*
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* Copyright (C) 2014 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifndef MIDI_EXTRACTOR_H_
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#define MIDI_EXTRACTOR_H_
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#include <media/MediaExtractorPluginApi.h>
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#include <media/MediaExtractorPluginHelper.h>
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#include <media/stagefright/MediaBufferBase.h>
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#include <media/stagefright/MediaBufferGroup.h>
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#include <media/MidiIoWrapper.h>
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#include <media/NdkMediaFormat.h>
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#include <utils/String8.h>
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#include <libsonivox/eas.h>
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namespace android {
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class MidiEngine {
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public:
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explicit MidiEngine(CDataSource *dataSource,
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AMediaFormat *fileMetadata,
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AMediaFormat *trackMetadata);
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~MidiEngine();
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status_t initCheck();
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status_t allocateBuffers(MediaBufferGroupHelper *group);
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status_t releaseBuffers();
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status_t seekTo(int64_t positionUs);
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MediaBufferHelper* readBuffer();
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private:
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MidiIoWrapper *mIoWrapper;
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MediaBufferGroupHelper *mGroup;
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EAS_DATA_HANDLE mEasData;
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EAS_HANDLE mEasHandle;
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const S_EAS_LIB_CONFIG* mEasConfig;
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bool mIsInitialized;
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};
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class MidiExtractor : public MediaExtractorPluginHelper {
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public:
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explicit MidiExtractor(CDataSource *source);
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virtual size_t countTracks();
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virtual MediaTrackHelper *getTrack(size_t index);
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virtual media_status_t getTrackMetaData(AMediaFormat *meta, size_t index, uint32_t flags);
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virtual media_status_t getMetaData(AMediaFormat *meta);
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virtual const char * name() { return "MidiExtractor"; }
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protected:
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virtual ~MidiExtractor();
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private:
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CDataSource *mDataSource;
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status_t mInitCheck;
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AMediaFormat *mFileMetadata;
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// There is only one track
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AMediaFormat *mTrackMetadata;
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MidiEngine *mEngine;
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EAS_DATA_HANDLE mEasData;
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EAS_HANDLE mEasHandle;
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EAS_PCM* mAudioBuffer;
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EAS_I32 mPlayTime;
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EAS_I32 mDuration;
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EAS_STATE mState;
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EAS_FILE mFileLocator;
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MidiExtractor(const MidiExtractor &);
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MidiExtractor &operator=(const MidiExtractor &);
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};
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bool SniffMidi(CDataSource *source, float *confidence);
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} // namespace android
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#endif // MIDI_EXTRACTOR_H_
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