void*
memalign_alloc_aligned(size_t size) {
#if defined(__x86_64__) || defined(__LP64) || defined(__IA64__) || defined(_M_X64) || defined(_WIN64)
return memalign_alloc(64, size);
#elif defined(__i386__) || defined(__i486__) || defined(__i686__) || defined(GEKKO)
return memalign_alloc(32, size);
#else
return memalign_alloc(32, size);
#endif
}
static void *resampler_sinc_new(const struct resampler_config *config,
double bandwidth_mod, resampler_simd_mask_t mask)
{
double cutoff;
size_t phase_elems, elems;
rarch_sinc_resampler_t *re = (rarch_sinc_resampler_t*)
calloc(1, sizeof(*re));
if (!re)
return NULL;
(void)config;
re->taps = TAPS;
cutoff = CUTOFF;
/* Downsampling, must lower cutoff, and extend number of
* taps accordingly to keep same stopband attenuation. */
if (bandwidth_mod < 1.0)
{
cutoff *= bandwidth_mod;
re->taps = (unsigned)ceil(re->taps / bandwidth_mod);
}
/* Be SIMD-friendly. */
#if (defined(__AVX__) && ENABLE_AVX) || (defined(__ARM_NEON__))
re->taps = (re->taps + 7) & ~7;
#else
re->taps = (re->taps + 3) & ~3;
#endif
phase_elems = (1 << PHASE_BITS) * re->taps;
#if SINC_COEFF_LERP
phase_elems *= 2;
#endif
elems = phase_elems + 4 * re->taps;
re->main_buffer = (float*)memalign_alloc(128, sizeof(float) * elems);
if (!re->main_buffer)
goto error;
re->phase_table = re->main_buffer;
re->buffer_l = re->main_buffer + phase_elems;
re->buffer_r = re->buffer_l + 2 * re->taps;
init_sinc_table(re, cutoff, re->phase_table,
1 << PHASE_BITS, re->taps, SINC_COEFF_LERP);
#if defined(__ARM_NEON__)
process_sinc_func = mask & RESAMPLER_SIMD_NEON
? process_sinc_neon : process_sinc_C;
#endif
return re;
error:
resampler_sinc_free(re);
return NULL;
}
