a7b19012d3
The method availableOutputBuffer() calculates how many chunks are in use. This simplifies code which needs this information, and it can run without knowing OutputBuffer internals. The function knows how to calculate this when begin>end; this might have been a bug in decodeParent(), which does not. git-svn-id: https://svn.musicpd.org/mpd/trunk@7250 09075e82-0dd4-0310-85a5-a0d7c8717e4f
73 lines
2.2 KiB
C
73 lines
2.2 KiB
C
/* the Music Player Daemon (MPD)
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* Copyright (C) 2003-2007 by Warren Dukes (warren.dukes@gmail.com)
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* This project's homepage is: http://www.musicpd.org
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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 as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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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 for more details.
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#ifndef OUTPUT_BUFFER_H
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#define OUTPUT_BUFFER_H
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#include "pcm_utils.h"
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#include "mpd_types.h"
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#include "decode.h"
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#include "audio.h"
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#include "inputStream.h"
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#include "replayGain.h"
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#define OUTPUT_BUFFER_DC_STOP -1
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#define OUTPUT_BUFFER_DC_SEEK -2
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/**
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* A ring set of buffers where the decoder appends data after the end,
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* and the player consumes data from the beginning.
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*/
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typedef struct _OutputBuffer {
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char *volatile chunks;
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mpd_uint16 *volatile chunkSize;
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mpd_uint16 *volatile bitRate;
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float *volatile times;
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/** the index of the first decoded chunk */
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mpd_uint16 volatile begin;
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/** the index after the last decoded chunk */
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mpd_uint16 volatile end;
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AudioFormat audioFormat;
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ConvState convState;
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} OutputBuffer;
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void initOutputBuffer(OutputBuffer * cb, char *chunks);
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void clearOutputBuffer(OutputBuffer * cb);
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void flushOutputBuffer(OutputBuffer * cb);
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/** determine the number of decoded chunks */
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unsigned availableOutputBuffer(const OutputBuffer * cb);
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/* we send inStream for buffering the inputStream while waiting to
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send the next chunk */
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int sendDataToOutputBuffer(OutputBuffer * cb,
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InputStream * inStream,
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DecoderControl * dc,
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int seekable,
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void *data,
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size_t datalen,
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float time,
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mpd_uint16 bitRate, ReplayGainInfo * replayGainInfo);
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#endif
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