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61 lines
2.2 KiB
C++
61 lines
2.2 KiB
C++
/***************************************************************************
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* Copyright (C) 2007 by Sindre Aamås *
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* sinamas@users.sourceforge.net *
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* *
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* This program is free software; you can redistribute it and/or modify *
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* it under the terms of the GNU General Public License version 2 as *
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* published by the Free Software Foundation. *
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* *
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* This program is distributed in the hope that it will be useful, *
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* but WITHOUT ANY WARRANTY; without even the implied warranty of *
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
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* GNU General Public License version 2 for more details. *
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* *
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* You should have received a copy of the GNU General Public License *
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* version 2 along with this program; if not, write to the *
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* Free Software Foundation, Inc., *
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* 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *
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***************************************************************************/
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#ifndef AUDIOSINK_H
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#define AUDIOSINK_H
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#include "ringbuffer.h"
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#include "rateest.h"
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#include "scoped_ptr.h"
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#include <SDL.h>
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#include <cstddef>
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class AudioSink {
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public:
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struct Status {
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long fromUnderrun;
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long fromOverflow;
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long rate;
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Status(long fromUnderrun, long fromOverflow, long rate)
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: fromUnderrun(fromUnderrun), fromOverflow(fromOverflow), rate(rate)
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{
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}
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};
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AudioSink(long sampleRate, int latency, int periods);
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~AudioSink();
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Status write(Sint16 const *inBuf, std::size_t samples);
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private:
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struct SdlDeleter;
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RingBuffer<Sint16> rbuf_;
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RateEst rateEst_;
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scoped_ptr<SDL_mutex, SdlDeleter> const mut_;
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scoped_ptr<SDL_cond, SdlDeleter> const bufReadyCond_;
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bool const failed_;
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static void fillBuffer(void *data, Uint8 *stream, int len) {
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static_cast<AudioSink *>(data)->read(stream, len);
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}
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void read(Uint8 *stream, std::size_t len);
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};
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#endif
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