1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/media/libopus/celt/arm/fixed_armv5e.h Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,116 @@
1.4 +/* Copyright (C) 2007-2009 Xiph.Org Foundation
1.5 + Copyright (C) 2003-2008 Jean-Marc Valin
1.6 + Copyright (C) 2007-2008 CSIRO
1.7 + Copyright (C) 2013 Parrot */
1.8 +/*
1.9 + Redistribution and use in source and binary forms, with or without
1.10 + modification, are permitted provided that the following conditions
1.11 + are met:
1.12 +
1.13 + - Redistributions of source code must retain the above copyright
1.14 + notice, this list of conditions and the following disclaimer.
1.15 +
1.16 + - Redistributions in binary form must reproduce the above copyright
1.17 + notice, this list of conditions and the following disclaimer in the
1.18 + documentation and/or other materials provided with the distribution.
1.19 +
1.20 + THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
1.21 + ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
1.22 + LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
1.23 + A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER
1.24 + OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
1.25 + EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
1.26 + PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
1.27 + PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
1.28 + LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
1.29 + NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
1.30 + SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
1.31 +*/
1.32 +
1.33 +#ifndef FIXED_ARMv5E_H
1.34 +#define FIXED_ARMv5E_H
1.35 +
1.36 +#include "fixed_armv4.h"
1.37 +
1.38 +/** 16x32 multiplication, followed by a 16-bit shift right. Results fits in 32 bits */
1.39 +#undef MULT16_32_Q16
1.40 +static OPUS_INLINE opus_val32 MULT16_32_Q16_armv5e(opus_val16 a, opus_val32 b)
1.41 +{
1.42 + int res;
1.43 + __asm__(
1.44 + "#MULT16_32_Q16\n\t"
1.45 + "smulwb %0, %1, %2\n\t"
1.46 + : "=r"(res)
1.47 + : "r"(b),"r"(a)
1.48 + );
1.49 + return res;
1.50 +}
1.51 +#define MULT16_32_Q16(a, b) (MULT16_32_Q16_armv5e(a, b))
1.52 +
1.53 +
1.54 +/** 16x32 multiplication, followed by a 15-bit shift right. Results fits in 32 bits */
1.55 +#undef MULT16_32_Q15
1.56 +static OPUS_INLINE opus_val32 MULT16_32_Q15_armv5e(opus_val16 a, opus_val32 b)
1.57 +{
1.58 + int res;
1.59 + __asm__(
1.60 + "#MULT16_32_Q15\n\t"
1.61 + "smulwb %0, %1, %2\n\t"
1.62 + : "=r"(res)
1.63 + : "r"(b), "r"(a)
1.64 + );
1.65 + return res<<1;
1.66 +}
1.67 +#define MULT16_32_Q15(a, b) (MULT16_32_Q15_armv5e(a, b))
1.68 +
1.69 +
1.70 +/** 16x32 multiply, followed by a 15-bit shift right and 32-bit add.
1.71 + b must fit in 31 bits.
1.72 + Result fits in 32 bits. */
1.73 +#undef MAC16_32_Q15
1.74 +static OPUS_INLINE opus_val32 MAC16_32_Q15_armv5e(opus_val32 c, opus_val16 a,
1.75 + opus_val32 b)
1.76 +{
1.77 + int res;
1.78 + __asm__(
1.79 + "#MAC16_32_Q15\n\t"
1.80 + "smlawb %0, %1, %2, %3;\n"
1.81 + : "=r"(res)
1.82 + : "r"(b<<1), "r"(a), "r"(c)
1.83 + );
1.84 + return res;
1.85 +}
1.86 +#define MAC16_32_Q15(c, a, b) (MAC16_32_Q15_armv5e(c, a, b))
1.87 +
1.88 +/** 16x16 multiply-add where the result fits in 32 bits */
1.89 +#undef MAC16_16
1.90 +static OPUS_INLINE opus_val32 MAC16_16_armv5e(opus_val32 c, opus_val16 a,
1.91 + opus_val16 b)
1.92 +{
1.93 + int res;
1.94 + __asm__(
1.95 + "#MAC16_16\n\t"
1.96 + "smlabb %0, %1, %2, %3;\n"
1.97 + : "=r"(res)
1.98 + : "r"(a), "r"(b), "r"(c)
1.99 + );
1.100 + return res;
1.101 +}
1.102 +#define MAC16_16(c, a, b) (MAC16_16_armv5e(c, a, b))
1.103 +
1.104 +/** 16x16 multiplication where the result fits in 32 bits */
1.105 +#undef MULT16_16
1.106 +static OPUS_INLINE opus_val32 MULT16_16_armv5e(opus_val16 a, opus_val16 b)
1.107 +{
1.108 + int res;
1.109 + __asm__(
1.110 + "#MULT16_16\n\t"
1.111 + "smulbb %0, %1, %2;\n"
1.112 + : "=r"(res)
1.113 + : "r"(a), "r"(b)
1.114 + );
1.115 + return res;
1.116 +}
1.117 +#define MULT16_16(a, b) (MULT16_16_armv5e(a, b))
1.118 +
1.119 +#endif
