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audio-resampler: add more optimizations

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This commit is contained in:
Wim Taymans 2016-02-11 17:40:56 +01:00
parent bdf194a09a
commit 4cb52f1831
1 changed files with 99 additions and 0 deletions
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99
gst-libs/gst/audio/audio-resampler-x86.h
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@ -411,7 +411,98 @@ inner_product_gint32_none_1_sse41 (gint32 * o, const gint32 * a,
*o = CLAMP (res, -(1L << 31), (1L << 31) - 1);
}
static inline void
inner_product_gint32_linear_1_sse41 (gint32 * o, const gint32 * a,
const gint32 * b, gint len, const gint32 * icoeff, gint oversample)
{
gint i = 0;
gint64 res;
__m128i sum, t, ta, tb;
__m128i f = _mm_loadu_si128 ((__m128i *)icoeff);
sum = _mm_setzero_si128 ();
f = _mm_unpacklo_epi32 (f, f);
for (; i < len; i += 4) {
t = _mm_loadu_si128 ((__m128i *)(a + i));
ta = _mm_unpacklo_epi32 (t, t);
tb = _mm_load_si128 ((__m128i *)(b + 2*i + 0));
sum =
_mm_add_epi64 (sum, _mm_mul_epi32 (_mm_unpacklo_epi64 (ta, ta),
_mm_unpacklo_epi32 (tb, tb)));
sum =
_mm_add_epi64 (sum, _mm_mul_epi32 (_mm_unpackhi_epi64 (ta, ta),
_mm_unpackhi_epi32 (tb, tb)));
ta = _mm_unpackhi_epi32 (t, t);
tb = _mm_load_si128 ((__m128i *)(b + 2*i + 4));
sum =
_mm_add_epi64 (sum, _mm_mul_epi32 (_mm_unpacklo_epi64 (ta, ta),
_mm_unpacklo_epi32 (tb, tb)));
sum =
_mm_add_epi64 (sum, _mm_mul_epi32 (_mm_unpackhi_epi64 (ta, ta),
_mm_unpackhi_epi32 (tb, tb)));
}
sum = _mm_srli_epi64 (sum, PRECISION_S32);
sum = _mm_mul_epi32 (sum, f);
sum = _mm_add_epi64 (sum, _mm_unpackhi_epi64 (sum, sum));
res = _mm_cvtsi128_si64 (sum);
res = (res + (1 << (PRECISION_S32 - 1))) >> PRECISION_S32;
*o = CLAMP (res, -(1L << 31), (1L << 31) - 1);
}
static inline void
inner_product_gint32_cubic_1_sse41 (gint32 * o, const gint32 * a,
const gint32 * b, gint len, const gint32 * icoeff, gint oversample)
{
gint i = 0;
gint64 res;
__m128i sum1, sum2, t, ta, tb;
__m128i f = _mm_loadu_si128 ((__m128i *)icoeff), f1, f2;
sum1 = sum2 = _mm_setzero_si128 ();
f1 = _mm_unpacklo_epi32 (f, f);
f2 = _mm_unpackhi_epi32 (f, f);
for (; i < len; i += 2) {
t = _mm_cvtsi64_si128 (*(gint64 *)(a + i));
t = _mm_unpacklo_epi32 (t, t);
ta = _mm_unpacklo_epi64 (t, t);
tb = _mm_load_si128 ((__m128i *)(b + 4*i + 0));
sum1 =
_mm_add_epi64 (sum1, _mm_mul_epi32 (ta, _mm_unpacklo_epi32 (tb, tb)));
sum2 =
_mm_add_epi64 (sum2, _mm_mul_epi32 (ta, _mm_unpackhi_epi32 (tb, tb)));
ta = _mm_unpackhi_epi64 (t, t);
tb = _mm_load_si128 ((__m128i *)(b + 4*i + 4));
sum1 =
_mm_add_epi64 (sum1, _mm_mul_epi32 (ta, _mm_unpacklo_epi32 (tb, tb)));
sum2 =
_mm_add_epi64 (sum2, _mm_mul_epi32 (ta, _mm_unpackhi_epi32 (tb, tb)));
}
sum1 = _mm_srli_epi64 (sum1, PRECISION_S32);
sum2 = _mm_srli_epi64 (sum2, PRECISION_S32);
sum1 = _mm_mul_epi32 (sum1, f1);
sum2 = _mm_mul_epi32 (sum2, f2);
sum1 = _mm_add_epi64 (sum1, sum2);
sum1 = _mm_add_epi64 (sum1, _mm_unpackhi_epi64 (sum1, sum1));
res = _mm_cvtsi128_si64 (sum1);
res = (res + (1 << (PRECISION_S32 - 1))) >> PRECISION_S32;
*o = CLAMP (res, -(1L << 31), (1L << 31) - 1);
}
MAKE_RESAMPLE_FUNC (gint32, none, 1, sse41);
MAKE_RESAMPLE_FUNC (gint32, linear, 1, sse41);
MAKE_RESAMPLE_FUNC (gint32, cubic, 1, sse41);
#endif
static void
@ -425,6 +516,8 @@ audio_resampler_check_x86 (const gchar *option)
resample_gfloat_cubic_1 = resample_gfloat_cubic_1_sse;
resample_gfloat_none_2 = resample_gfloat_none_2_sse;
#else
GST_DEBUG ("SSE optimisations not enabled");
#endif
} else if (!strcmp (option, "sse2")) {
#if defined (HAVE_EMMINTRIN_H) && defined(__SSE2__)
@ -444,11 +537,17 @@ audio_resampler_check_x86 (const gchar *option)
resample_gint16_none_2 = resample_gint16_none_2_sse2;
resample_gfloat_none_2 = resample_gfloat_none_2_sse;
resample_gdouble_none_2 = resample_gdouble_none_2_sse2;
#else
GST_DEBUG ("SSE2 optimisations not enabled");
#endif
} else if (!strcmp (option, "sse41")) {
#if defined (HAVE_SMMINTRIN_H) && defined(__SSE4_1__)
GST_DEBUG ("enable SSE41 optimisations");
resample_gint32_none_1 = resample_gint32_none_1_sse41;
resample_gint32_linear_1 = resample_gint32_linear_1_sse41;
resample_gint32_cubic_1 = resample_gint32_cubic_1_sse41;
#else
GST_DEBUG ("SSE41 optimisations not enabled");
#endif
}
}