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Diffstat (limited to 'media/libstagefright/include/MidiExtractor.h')
-rw-r--r-- | media/libstagefright/include/MidiExtractor.h | 95 |
1 files changed, 95 insertions, 0 deletions
diff --git a/media/libstagefright/include/MidiExtractor.h b/media/libstagefright/include/MidiExtractor.h new file mode 100644 index 0000000..9a2abc0 --- /dev/null +++ b/media/libstagefright/include/MidiExtractor.h @@ -0,0 +1,95 @@ +/* + * Copyright (C) 2014 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +#ifndef MIDI_EXTRACTOR_H_ +#define MIDI_EXTRACTOR_H_ + +#include <media/stagefright/DataSource.h> +#include <media/stagefright/MediaExtractor.h> +#include <media/stagefright/MediaBuffer.h> +#include <media/stagefright/MediaBufferGroup.h> +#include <media/MidiIoWrapper.h> +#include <utils/String8.h> +#include <libsonivox/eas.h> + +namespace android { + +class MidiEngine : public RefBase { +public: + MidiEngine(const sp<DataSource> &dataSource, + const sp<MetaData> &fileMetadata, + const sp<MetaData> &trackMetadata); + ~MidiEngine(); + + status_t initCheck(); + + status_t allocateBuffers(); + status_t releaseBuffers(); + status_t seekTo(int64_t positionUs); + MediaBuffer* readBuffer(); +private: + sp<MidiIoWrapper> mIoWrapper; + MediaBufferGroup *mGroup; + EAS_DATA_HANDLE mEasData; + EAS_HANDLE mEasHandle; + const S_EAS_LIB_CONFIG* mEasConfig; + bool mIsInitialized; +}; + +class MidiExtractor : public MediaExtractor { + +public: + // Extractor assumes ownership of source + MidiExtractor(const sp<DataSource> &source); + + virtual size_t countTracks(); + virtual sp<MediaSource> getTrack(size_t index); + virtual sp<MetaData> getTrackMetaData(size_t index, uint32_t flags); + + virtual sp<MetaData> getMetaData(); + +protected: + virtual ~MidiExtractor(); + +private: + sp<DataSource> mDataSource; + status_t mInitCheck; + sp<MetaData> mFileMetadata; + + // There is only one track + sp<MetaData> mTrackMetadata; + + sp<MidiEngine> mEngine; + + EAS_DATA_HANDLE mEasData; + EAS_HANDLE mEasHandle; + EAS_PCM* mAudioBuffer; + EAS_I32 mPlayTime; + EAS_I32 mDuration; + EAS_STATE mState; + EAS_FILE mFileLocator; + + MidiExtractor(const MidiExtractor &); + MidiExtractor &operator=(const MidiExtractor &); + +}; + +bool SniffMidi(const sp<DataSource> &source, String8 *mimeType, + float *confidence, sp<AMessage> *); + +} // namespace android + +#endif // MIDI_EXTRACTOR_H_ |