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/*
* Copyright (C) 2012 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 ANDROID_AUDIO_LIBSNDFILE_SOURCE_H
#define ANDROID_AUDIO_LIBSNDFILE_SOURCE_H
#include "NBAIO.h"
#include "sndfile.h"
// Implementation of NBAIO_Source that wraps a libsndfile opened in SFM_READ mode
namespace android {
class LibsndfileSource : public NBAIO_Source {
public:
// If 'loop' is true and it permits seeking, then we'll act as an infinite source
LibsndfileSource(SNDFILE *sndfile, const SF_INFO &sfinfo, bool loop = false);
virtual ~LibsndfileSource();
// NBAIO_Port interface
//virtual ssize_t negotiate(const NBAIO_Format offers[], size_t numOffers,
// NBAIO_Format counterOffers[], size_t& numCounterOffers);
//virtual NBAIO_Format format() const;
// NBAIO_Source interface
//virtual size_t framesRead() const;
//virtual size_t framesOverrun();
//virtual size_t overruns();
virtual ssize_t availableToRead();
virtual ssize_t read(void *buffer, size_t count);
//virtual ssize_t readVia(readVia_t via, size_t total, void *user, size_t block);
private:
SNDFILE * mSndfile;
sf_count_t mEstimatedFramesUntilEOF;
bool mLooping;
bool mReadAnyFramesThisLoopCycle;
};
} // namespace android
#endif // ANDROID_AUDIO_LIBSNDFILE_SOURCE_H
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