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Add some planar pred optimization for blocks larger than 8x8

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This commit is contained in:
Ari Lemmetti 2016-01-13 00:51:59 +02:00
parent 0df88697ff
commit 1ed34f2df8
1 changed files with 36 additions and 5 deletions
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31
src/strategies/avx2/intra-avx2.c
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@ -480,6 +480,36 @@ static void kvz_intra_pred_planar_avx2(
const kvz_pixel top_right = ref_top[width + 1];
const kvz_pixel bottom_left = ref_left[width + 1];
if (log2_width > 2) {
__m128i v_width = _mm_set1_epi16(width);
__m128i v_top_right = _mm_set1_epi16(top_right);
__m128i v_bottom_left = _mm_set1_epi16(bottom_left);
for (int y = 0; y < width; ++y) {
__m128i x_plus_1 = _mm_setr_epi16(-7, -6, -5, -4, -3, -2, -1, 0);
__m128i v_ref_left = _mm_set1_epi16(ref_left[y + 1]);
__m128i y_plus_1 = _mm_set1_epi16(y + 1);
for (int x = 0; x < width; x += 8) {
x_plus_1 = _mm_add_epi16(x_plus_1, _mm_set1_epi16(8));
__m128i v_ref_top = _mm_loadl_epi64((__m128i*)&(ref_top[x + 1]));
v_ref_top = _mm_cvtepu8_epi16(v_ref_top);
__m128i hor = _mm_add_epi16(_mm_mullo_epi16(_mm_sub_epi16(v_width, x_plus_1), v_ref_left), _mm_mullo_epi16(x_plus_1, v_top_right));
__m128i ver = _mm_add_epi16(_mm_mullo_epi16(_mm_sub_epi16(v_width, y_plus_1), v_ref_top), _mm_mullo_epi16(y_plus_1, v_bottom_left));
//dst[y * width + x] = ho
__m128i chunk = _mm_srli_epi16(_mm_add_epi16(_mm_add_epi16(ver, hor), v_width), (log2_width + 1));
chunk = _mm_packus_epi16(chunk, chunk);
_mm_storel_epi64((__m128i*)&(dst[y * width + x]), chunk);
}
}
} else {
// Unoptimized version for reference.
for (int y = 0; y < width; ++y) {
for (int x = 0; x < width; ++x) {
int_fast16_t hor = (width - 1 - x) * ref_left[y + 1] + (x + 1) * top_right;
@ -488,6 +518,7 @@ static void kvz_intra_pred_planar_avx2(
}
}
}
}
#endif //COMPILE_INTEL_AVX2 && defined X86_64