b40428b3fd
All what's left in pcm_utils.h is the pcm_range() utility function, which is only used internally by pcm_volume and pcm_mix.
41 lines
1.3 KiB
C
41 lines
1.3 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 MPD_PCM_UTILS_H
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#define MPD_PCM_UTILS_H
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#include <glib.h>
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#include <stdint.h>
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/**
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* Check if the value is within the range of the provided bit size,
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* and caps it if necessary.
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*/
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static inline int32_t
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pcm_range(int32_t sample, unsigned bits)
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{
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if (G_UNLIKELY(sample < (-1 << (bits - 1))))
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return -1 << (bits - 1);
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if (G_UNLIKELY(sample >= (1 << (bits - 1))))
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return (1 << (bits - 1)) - 1;
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return sample;
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}
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#endif
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