sys/dev/pad/padvol.h

   1 /* $NetBSD: padvol.h,v 1.1 2007/11/11 19:53:38 jmcneill Exp $ */
   2
   3 /*-
   4  * Copyright (c) 2007 Jared D. McNeill <jmcneill@invisible.ca>
   5  * All rights reserved.
   6  *
   7  * Redistribution and use in source and binary forms, with or without
   8  * modification, are permitted provided that the following conditions
   9  * are met:
  10  * 1. Redistributions of source code must retain the above copyright
  11  *    notice, this list of conditions and the following disclaimer.
  12  * 2. Redistributions in binary form must reproduce the above copyright
  13  *    notice, this list of conditions and the following disclaimer in the
  14  *    documentation and/or other materials provided with the distribution.
  15  *
  16  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
  17  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
  18  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  19  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
  20  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  21  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  22  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  23  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  24  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  25  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  26  * POSSIBILITY OF SUCH DAMAGE.
  27  */
  28
  29 #ifndef _SYS_DEV_PAD_PADVOL_H
  30 #define _SYS_DEV_PAD_PADVOL_H
  31
  32 stream_filter_t *       pad_vol_slinear16_le(struct audio_softc *,
  33                             const audio_params_t *, const audio_params_t *);
  34 stream_filter_t *       pad_vol_slinear16_be(struct audio_softc *,
  35                             const audio_params_t *, const audio_params_t *);
  36
  37 #define PAD_DEFINE_FILTER(name)                                         \
  38         static int                                                      \
  39         name##_fetch_to(stream_fetcher_t *, audio_stream_t *, int);     \
  40         stream_filter_t * name(struct audio_softc *,                    \
  41             const audio_params_t *, const audio_params_t *);            \
  42         stream_filter_t *                                               \
  43         name(struct audio_softc *sc, const audio_params_t *from,        \
  44             const audio_params_t *to)                                   \
  45         {                                                               \
  46                 return pad_filter_factory(sc, name##_fetch_to);         \
  47         }                                                               \
  48         static int                                                      \
  49         name##_fetch_to(stream_fetcher_t *self, audio_stream_t *dst,    \
  50             int max_used)
  51
  52 #endif /* !_SYS_DEV_PAD_PADVOL_H */