cachepc-qemu

Fork of AMDESE/qemu with changes for cachepc side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-qemu
Log | Files | Refs | Submodules | LICENSE | sfeed.txt

mixeng_template.h (3969B)

      1/*
      2 * QEMU Mixing engine
      3 *
      4 * Copyright (c) 2004-2005 Vassili Karpov (malc)
      5 *
      6 * Permission is hereby granted, free of charge, to any person obtaining a copy
      7 * of this software and associated documentation files (the "Software"), to deal
      8 * in the Software without restriction, including without limitation the rights
      9 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
     10 * copies of the Software, and to permit persons to whom the Software is
     11 * furnished to do so, subject to the following conditions:
     12 *
     13 * The above copyright notice and this permission notice shall be included in
     14 * all copies or substantial portions of the Software.
     15 *
     16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
     17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
     18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
     19 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
     20 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
     21 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
     22 * THE SOFTWARE.
     23 */
     24
     25/*
     26 * Tusen tack till Mike Nordell
     27 * dec++'ified by Dscho
     28 */
     29
     30#ifndef SIGNED
     31#define HALF (IN_MAX >> 1)
     32#endif
     33
     34#define ET glue (ENDIAN_CONVERSION, glue (glue (glue (_, ITYPE), BSIZE), _t))
     35#define IN_T glue (glue (ITYPE, BSIZE), _t)
     36
     37#ifdef FLOAT_MIXENG
     38static inline mixeng_real glue (conv_, ET) (IN_T v)
     39{
     40    IN_T nv = ENDIAN_CONVERT (v);
     41
     42#ifdef RECIPROCAL
     43#ifdef SIGNED
     44    return nv * (2.f / ((mixeng_real)IN_MAX - IN_MIN));
     45#else
     46    return (nv - HALF) * (2.f / (mixeng_real)IN_MAX);
     47#endif
     48#else  /* !RECIPROCAL */
     49#ifdef SIGNED
     50    return nv / (((mixeng_real)IN_MAX - IN_MIN) / 2.f);
     51#else
     52    return (nv - HALF) / ((mixeng_real)IN_MAX / 2.f);
     53#endif
     54#endif
     55}
     56
     57static inline IN_T glue (clip_, ET) (mixeng_real v)
     58{
     59    if (v >= 1.f) {
     60        return IN_MAX;
     61    } else if (v < -1.f) {
     62        return IN_MIN;
     63    }
     64
     65#ifdef SIGNED
     66    return ENDIAN_CONVERT((IN_T)(v * (((mixeng_real)IN_MAX - IN_MIN) / 2.f)));
     67#else
     68    return ENDIAN_CONVERT((IN_T)((v * ((mixeng_real)IN_MAX / 2.f)) + HALF));
     69#endif
     70}
     71
     72#else  /* !FLOAT_MIXENG */
     73
     74static inline int64_t glue (conv_, ET) (IN_T v)
     75{
     76    IN_T nv = ENDIAN_CONVERT (v);
     77#ifdef SIGNED
     78    return ((int64_t) nv) << (32 - SHIFT);
     79#else
     80    return ((int64_t) nv - HALF) << (32 - SHIFT);
     81#endif
     82}
     83
     84static inline IN_T glue (clip_, ET) (int64_t v)
     85{
     86    if (v >= 0x7fffffffLL) {
     87        return IN_MAX;
     88    } else if (v < -2147483648LL) {
     89        return IN_MIN;
     90    }
     91
     92#ifdef SIGNED
     93    return ENDIAN_CONVERT ((IN_T) (v >> (32 - SHIFT)));
     94#else
     95    return ENDIAN_CONVERT ((IN_T) ((v >> (32 - SHIFT)) + HALF));
     96#endif
     97}
     98#endif
     99
    100static void glue (glue (conv_, ET), _to_stereo)
    101    (struct st_sample *dst, const void *src, int samples)
    102{
    103    struct st_sample *out = dst;
    104    IN_T *in = (IN_T *) src;
    105
    106    while (samples--) {
    107        out->l = glue (conv_, ET) (*in++);
    108        out->r = glue (conv_, ET) (*in++);
    109        out += 1;
    110    }
    111}
    112
    113static void glue (glue (conv_, ET), _to_mono)
    114    (struct st_sample *dst, const void *src, int samples)
    115{
    116    struct st_sample *out = dst;
    117    IN_T *in = (IN_T *) src;
    118
    119    while (samples--) {
    120        out->l = glue (conv_, ET) (in[0]);
    121        out->r = out->l;
    122        out += 1;
    123        in += 1;
    124    }
    125}
    126
    127static void glue (glue (clip_, ET), _from_stereo)
    128    (void *dst, const struct st_sample *src, int samples)
    129{
    130    const struct st_sample *in = src;
    131    IN_T *out = (IN_T *) dst;
    132    while (samples--) {
    133        *out++ = glue (clip_, ET) (in->l);
    134        *out++ = glue (clip_, ET) (in->r);
    135        in += 1;
    136    }
    137}
    138
    139static void glue (glue (clip_, ET), _from_mono)
    140    (void *dst, const struct st_sample *src, int samples)
    141{
    142    const struct st_sample *in = src;
    143    IN_T *out = (IN_T *) dst;
    144    while (samples--) {
    145        *out++ = glue (clip_, ET) (in->l + in->r);
    146        in += 1;
    147    }
    148}
    149
    150#undef ET
    151#undef HALF
    152#undef IN_T