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/*
* Copyright (C) 2009 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 AMR_EXTRACTOR_H_
#define AMR_EXTRACTOR_H_
#include <utils/Errors.h>
#include <media/stagefright/MediaExtractor.h>
namespace android {
struct AMessage;
class String8;
#define OFFSET_TABLE_LEN 300
class AMRExtractor : public MediaExtractor {
public:
AMRExtractor(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 ~AMRExtractor();
private:
sp<DataSource> mDataSource;
sp<MetaData> mMeta;
status_t mInitCheck;
bool mIsWide;
off64_t mOffsetTable[OFFSET_TABLE_LEN]; //5 min
size_t mOffsetTableLength;
AMRExtractor(const AMRExtractor &);
AMRExtractor &operator=(const AMRExtractor &);
};
bool SniffAMR(
const sp<DataSource> &source, String8 *mimeType, float *confidence,
sp<AMessage> *);
} // namespace android
#endif // AMR_EXTRACTOR_H_
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