sys/dev/sound/pcm/intpcm.h

   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  * $FreeBSD$
  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_ */