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Implement 16xN planar prediction.

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siivonek 2023-09-07 21:02:26 +03:00 committed by Joose Sainio
parent 4bbd5f4c9a
commit 4ae234ef24
1 changed files with 48 additions and 2 deletions
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50
src/strategies/avx2/intra-avx2.c
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@ -665,7 +665,24 @@ static void intra_pred_planar_hor_w8(const uvg_pixel* ref, const int line, const
dst[d] = _mm256_slli_epi16(v_tmp, shift);
}
}
static void intra_pred_planar_hor_w16(const uvg_pixel* ref, const int line, const int shift, __m256i* dst) {}
static void intra_pred_planar_hor_w16(const uvg_pixel* ref, const int line, const int shift, __m256i* dst)
{
const __m256i v_last_ref = _mm256_set1_epi16(ref[16 + 1]);
__m256i v_ref_coeff = _mm256_setr_epi16(15, 14, 13, 12, 11, 10, 9, 8, 7, 6, 5, 4, 3, 2, 1, 0);
__m256i v_last_ref_coeff = _mm256_setr_epi16(1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16);
__m256i v_last_ref_mul = _mm256_mullo_epi16(v_last_ref, v_last_ref_coeff);
for (int i = 0, d = 0; i < line; ++i, ++d) {
__m256i v_ref = _mm256_set1_epi16(ref[i + 1]);
__m256i v_tmp = _mm256_mullo_epi16(v_ref, v_ref_coeff); // TODO: the result is needed immediately after this. This leads to NOPs, consider doing multiple lines at a time
v_tmp = _mm256_add_epi16(v_last_ref_mul, v_tmp);
dst[d] = _mm256_slli_epi16(v_tmp, shift);
}
}
static void intra_pred_planar_hor_w32(const uvg_pixel* ref, const int line, const int shift, __m256i* dst) {}
static void intra_pred_planar_ver_w1(const uvg_pixel* ref, const int line, const int shift, __m256i* dst) {}
@ -737,7 +754,36 @@ static void intra_pred_planar_ver_w8(const uvg_pixel* ref, const int line, const
dst[d + 1] = _mm256_permute4x64_epi64(v_tmp1, _MM_SHUFFLE(3, 1, 2, 0));
}
}
static void intra_pred_planar_ver_w16(const uvg_pixel* ref, const int line, const int shift, __m256i* dst) {}
static void intra_pred_planar_ver_w16(const uvg_pixel* ref, const int line, const int shift, __m256i* dst)
{
const __m256i v_last_ref = _mm256_set1_epi8(ref[line + 1]);
// Got 16 8-bit samples, or 128 bits of data. Duplicate to fill a whole 256-bit vector.
const __m128i v_ref_raw = _mm_load_si128((const __m128i*) &ref[1]);
__m256i v_ref = _mm256_castsi128_si256(v_ref_raw);
v_ref = _mm256_inserti128_si256(v_ref, v_ref_raw, 1);
// Handle 2 lines at a time
for (int y = 0; y < line; y += 2) {
const int a1 = line - 1 - (y + 0);
const int b1 = (y + 0) + 1;
const int a2 = line - 1 - (y + 1);
const int b2 = (y + 1) + 1;
__m256i v_ys = _mm256_setr_epi8(a1, b1, a1, b1, a1, b1, a1, b1,
a1, b1, a1, b1, a1, b1, a1, b1,
a2, b2, a2, b2, a2, b2, a2, b2,
a2, b2, a2, b2, a2, b2, a2, b2); // TODO: these could be loaded from a table
__m256i v_lo = _mm256_unpacklo_epi8(v_ref, v_last_ref);
__m256i v_hi = _mm256_unpackhi_epi8(v_ref, v_last_ref);
__m256i v_madd_lo = _mm256_maddubs_epi16(v_lo, v_ys);
__m256i v_madd_hi = _mm256_maddubs_epi16(v_hi, v_ys);
v_madd_lo = _mm256_slli_epi16(v_madd_lo, shift);
v_madd_hi = _mm256_slli_epi16(v_madd_hi, shift);
dst[y + 0] = _mm256_permute2x128_si256(v_madd_lo, v_madd_hi, 0x20);
dst[y + 1] = _mm256_permute2x128_si256(v_madd_lo, v_madd_hi, 0x31);
}
}
static void intra_pred_planar_ver_w32(const uvg_pixel* ref, const int line, const int shift, __m256i* dst) {}