The Design and Implementation of the FreeBSD Operating System, Second Edition
Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)


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FreeBSD/Linux Kernel Cross Reference
sys/dev/sound/pcm/intpcm.h

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    1 /*-
    2  * Copyright (c) 2008-2009 Ariff Abdullah <ariff@FreeBSD.org>
    3  * All rights reserved.
    4  *
    5  * Redistribution and use in source and binary forms, with or without
    6  * modification, are permitted provided that the following conditions
    7  * are met:
    8  * 1. Redistributions of source code must retain the above copyright
    9  *    notice, this list of conditions and the following disclaimer.
   10  * 2. Redistributions in binary form must reproduce the above copyright
   11  *    notice, this list of conditions and the following disclaimer in the
   12  *    documentation and/or other materials provided with the distribution.
   13  *
   14  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
   15  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   16  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   17  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
   18  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   19  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
   20  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   21  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   22  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   23  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   24  * SUCH DAMAGE.
   25  *
   26  * $FreeBSD: releng/8.1/sys/dev/sound/pcm/intpcm.h 193640 2009-06-07 19:12:08Z ariff $
   27  */
   28 
   29 #ifndef _SND_INTPCM_H_
   30 #define _SND_INTPCM_H_
   31 
   32 typedef intpcm_t intpcm_read_t(uint8_t *);
   33 typedef void intpcm_write_t(uint8_t *, intpcm_t);
   34 
   35 extern intpcm_read_t *feeder_format_read_op(uint32_t);
   36 extern intpcm_write_t *feeder_format_write_op(uint32_t);
   37 
   38 #define INTPCM_DECLARE_OP_WRITE(SIGN, BIT, ENDIAN, SHIFT)               \
   39 static __inline void                                                    \
   40 intpcm_write_##SIGN##BIT##ENDIAN(uint8_t *dst, intpcm_t v)              \
   41 {                                                                       \
   42                                                                         \
   43         _PCM_WRITE_##SIGN##BIT##_##ENDIAN(dst, v >> SHIFT);             \
   44 }
   45 
   46 #define INTPCM_DECLARE_OP_8(SIGN, ENDIAN)                               \
   47 static __inline intpcm_t                                                \
   48 intpcm_read_##SIGN##8##ENDIAN(uint8_t *src)                             \
   49 {                                                                       \
   50                                                                         \
   51         return (_PCM_READ_##SIGN##8##_##ENDIAN(src) << 24);             \
   52 }                                                                       \
   53 INTPCM_DECLARE_OP_WRITE(SIGN, 8, ENDIAN, 24)
   54 
   55 #define INTPCM_DECLARE_OP_16(SIGN, ENDIAN)                              \
   56 static __inline intpcm_t                                                \
   57 intpcm_read_##SIGN##16##ENDIAN(uint8_t *src)                            \
   58 {                                                                       \
   59                                                                         \
   60         return (_PCM_READ_##SIGN##16##_##ENDIAN(src) << 16);            \
   61 }                                                                       \
   62 INTPCM_DECLARE_OP_WRITE(SIGN, 16, ENDIAN, 16)
   63 
   64 #define INTPCM_DECLARE_OP_24(SIGN, ENDIAN)                              \
   65 static __inline intpcm_t                                                \
   66 intpcm_read_##SIGN##24##ENDIAN(uint8_t *src)                            \
   67 {                                                                       \
   68                                                                         \
   69         return (_PCM_READ_##SIGN##24##_##ENDIAN(src) << 8);             \
   70 }                                                                       \
   71 INTPCM_DECLARE_OP_WRITE(SIGN, 24, ENDIAN, 8)
   72 
   73 #define INTPCM_DECLARE_OP_32(SIGN, ENDIAN)                              \
   74 static __inline intpcm_t                                                \
   75 intpcm_read_##SIGN##32##ENDIAN(uint8_t *src)                            \
   76 {                                                                       \
   77                                                                         \
   78         return (_PCM_READ_##SIGN##32##_##ENDIAN(src));                  \
   79 }                                                                       \
   80                                                                         \
   81 static __inline void                                                    \
   82 intpcm_write_##SIGN##32##ENDIAN(uint8_t *dst, intpcm_t v)               \
   83 {                                                                       \
   84                                                                         \
   85         _PCM_WRITE_##SIGN##32##_##ENDIAN(dst, v);                       \
   86 }
   87 
   88 
   89 #define INTPCM_DECLARE(t)                                               \
   90                                                                         \
   91 G711_DECLARE_TABLE(t);                                                  \
   92                                                                         \
   93 static __inline intpcm_t                                                \
   94 intpcm_read_ulaw(uint8_t *src)                                          \
   95 {                                                                       \
   96                                                                         \
   97         return (_G711_TO_INTPCM((t).ulaw_to_u8, *src) << 24);           \
   98 }                                                                       \
   99                                                                         \
  100 static __inline intpcm_t                                                \
  101 intpcm_read_alaw(uint8_t *src)                                          \
  102 {                                                                       \
  103                                                                         \
  104         return (_G711_TO_INTPCM((t).alaw_to_u8, *src) << 24);           \
  105 }                                                                       \
  106                                                                         \
  107 static __inline void                                                    \
  108 intpcm_write_ulaw(uint8_t *dst, intpcm_t v)                             \
  109 {                                                                       \
  110                                                                         \
  111         *dst = _INTPCM_TO_G711((t).u8_to_ulaw, v >> 24);                \
  112 }                                                                       \
  113                                                                         \
  114 static __inline void                                                    \
  115 intpcm_write_alaw(uint8_t *dst, intpcm_t v)                             \
  116 {                                                                       \
  117                                                                         \
  118         *dst = _INTPCM_TO_G711((t).u8_to_alaw, v >> 24);                \
  119 }                                                                       \
  120                                                                         \
  121 INTPCM_DECLARE_OP_8(S, NE)                                              \
  122 INTPCM_DECLARE_OP_16(S, LE)                                             \
  123 INTPCM_DECLARE_OP_16(S, BE)                                             \
  124 INTPCM_DECLARE_OP_24(S, LE)                                             \
  125 INTPCM_DECLARE_OP_24(S, BE)                                             \
  126 INTPCM_DECLARE_OP_32(S, LE)                                             \
  127 INTPCM_DECLARE_OP_32(S, BE)                                             \
  128 INTPCM_DECLARE_OP_8(U,  NE)                                             \
  129 INTPCM_DECLARE_OP_16(U, LE)                                             \
  130 INTPCM_DECLARE_OP_16(U, BE)                                             \
  131 INTPCM_DECLARE_OP_24(U, LE)                                             \
  132 INTPCM_DECLARE_OP_24(U, BE)                                             \
  133 INTPCM_DECLARE_OP_32(U, LE)                                             \
  134 INTPCM_DECLARE_OP_32(U, BE)
  135 
  136 #endif  /* !_SND_INTPCM_H_ */

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