Adding upstream version 1:115.7.0.upstream/1%115.7.0upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 913 insertions, 0 deletions

diff --git a/media/libvpx/libvpx/vpx_dsp/x86/loopfilter_avx2.c b/media/libvpx/libvpx/vpx_dsp/x86/loopfilter_avx2.c
new file mode 100644
index 0000000000..a58fb65539
--- /dev/null
+++ b/media/libvpx/libvpx/vpx_dsp/x86/loopfilter_avx2.c
@@ -0,0 +1,913 @@
+/*
+ *  Copyright (c) 2010 The WebM project authors. All Rights Reserved.
+ *
+ *  Use of this source code is governed by a BSD-style license
+ *  that can be found in the LICENSE file in the root of the source
+ *  tree. An additional intellectual property rights grant can be found
+ *  in the file PATENTS.  All contributing project authors may
+ *  be found in the AUTHORS file in the root of the source tree.
+ */
+
+#include <immintrin.h> /* AVX2 */
+
+#include "./vpx_dsp_rtcd.h"
+#include "vpx_ports/mem.h"
+
+void vpx_lpf_horizontal_16_avx2(unsigned char *s, int pitch,
+                                const unsigned char *blimit,
+                                const unsigned char *limit,
+                                const unsigned char *thresh) {
+  __m128i mask, hev, flat, flat2;
+  const __m128i zero = _mm_setzero_si128();
+  const __m128i one = _mm_set1_epi8(1);
+  __m128i q7p7, q6p6, q5p5, q4p4, q3p3, q2p2, q1p1, q0p0, p0q0, p1q1;
+  __m128i abs_p1p0;
+
+  const __m128i thresh_v =
+      _mm_broadcastb_epi8(_mm_cvtsi32_si128((int)thresh[0]));
+  const __m128i limit_v = _mm_broadcastb_epi8(_mm_cvtsi32_si128((int)limit[0]));
+  const __m128i blimit_v =
+      _mm_broadcastb_epi8(_mm_cvtsi32_si128((int)blimit[0]));
+
+  q4p4 = _mm_loadl_epi64((__m128i *)(s - 5 * pitch));
+  q4p4 = _mm_castps_si128(
+      _mm_loadh_pi(_mm_castsi128_ps(q4p4), (__m64 *)(s + 4 * pitch)));
+  q3p3 = _mm_loadl_epi64((__m128i *)(s - 4 * pitch));
+  q3p3 = _mm_castps_si128(
+      _mm_loadh_pi(_mm_castsi128_ps(q3p3), (__m64 *)(s + 3 * pitch)));
+  q2p2 = _mm_loadl_epi64((__m128i *)(s - 3 * pitch));
+  q2p2 = _mm_castps_si128(
+      _mm_loadh_pi(_mm_castsi128_ps(q2p2), (__m64 *)(s + 2 * pitch)));
+  q1p1 = _mm_loadl_epi64((__m128i *)(s - 2 * pitch));
+  q1p1 = _mm_castps_si128(
+      _mm_loadh_pi(_mm_castsi128_ps(q1p1), (__m64 *)(s + 1 * pitch)));
+  p1q1 = _mm_shuffle_epi32(q1p1, 78);
+  q0p0 = _mm_loadl_epi64((__m128i *)(s - 1 * pitch));
+  q0p0 = _mm_castps_si128(
+      _mm_loadh_pi(_mm_castsi128_ps(q0p0), (__m64 *)(s - 0 * pitch)));
+  p0q0 = _mm_shuffle_epi32(q0p0, 78);
+
+  {
+    __m128i abs_p1q1, abs_p0q0, abs_q1q0, fe, ff, work;
+    abs_p1p0 =
+        _mm_or_si128(_mm_subs_epu8(q1p1, q0p0), _mm_subs_epu8(q0p0, q1p1));
+    abs_q1q0 = _mm_srli_si128(abs_p1p0, 8);
+    fe = _mm_set1_epi8((int8_t)0xfe);
+    ff = _mm_cmpeq_epi8(abs_p1p0, abs_p1p0);
+    abs_p0q0 =
+        _mm_or_si128(_mm_subs_epu8(q0p0, p0q0), _mm_subs_epu8(p0q0, q0p0));
+    abs_p1q1 =
+        _mm_or_si128(_mm_subs_epu8(q1p1, p1q1), _mm_subs_epu8(p1q1, q1p1));
+    flat = _mm_max_epu8(abs_p1p0, abs_q1q0);
+    hev = _mm_subs_epu8(flat, thresh_v);
+    hev = _mm_xor_si128(_mm_cmpeq_epi8(hev, zero), ff);
+
+    abs_p0q0 = _mm_adds_epu8(abs_p0q0, abs_p0q0);
+    abs_p1q1 = _mm_srli_epi16(_mm_and_si128(abs_p1q1, fe), 1);
+    mask = _mm_subs_epu8(_mm_adds_epu8(abs_p0q0, abs_p1q1), blimit_v);
+    mask = _mm_xor_si128(_mm_cmpeq_epi8(mask, zero), ff);
+    // mask |= (abs(p0 - q0) * 2 + abs(p1 - q1) / 2  > blimit) * -1;
+    mask = _mm_max_epu8(abs_p1p0, mask);
+    // mask |= (abs(p1 - p0) > limit) * -1;
+    // mask |= (abs(q1 - q0) > limit) * -1;
+
+    work = _mm_max_epu8(
+        _mm_or_si128(_mm_subs_epu8(q2p2, q1p1), _mm_subs_epu8(q1p1, q2p2)),
+        _mm_or_si128(_mm_subs_epu8(q3p3, q2p2), _mm_subs_epu8(q2p2, q3p3)));
+    mask = _mm_max_epu8(work, mask);
+    mask = _mm_max_epu8(mask, _mm_srli_si128(mask, 8));
+    mask = _mm_subs_epu8(mask, limit_v);
+    mask = _mm_cmpeq_epi8(mask, zero);
+  }
+
+  // lp filter
+  {
+    const __m128i t4 = _mm_set1_epi8(4);
+    const __m128i t3 = _mm_set1_epi8(3);
+    const __m128i t80 = _mm_set1_epi8((int8_t)0x80);
+    const __m128i t1 = _mm_set1_epi16(0x1);
+    __m128i qs1ps1 = _mm_xor_si128(q1p1, t80);
+    __m128i qs0ps0 = _mm_xor_si128(q0p0, t80);
+    __m128i qs0 = _mm_xor_si128(p0q0, t80);
+    __m128i qs1 = _mm_xor_si128(p1q1, t80);
+    __m128i filt;
+    __m128i work_a;
+    __m128i filter1, filter2;
+    __m128i flat2_q6p6, flat2_q5p5, flat2_q4p4, flat2_q3p3, flat2_q2p2;
+    __m128i flat2_q1p1, flat2_q0p0, flat_q2p2, flat_q1p1, flat_q0p0;
+
+    filt = _mm_and_si128(_mm_subs_epi8(qs1ps1, qs1), hev);
+    work_a = _mm_subs_epi8(qs0, qs0ps0);
+    filt = _mm_adds_epi8(filt, work_a);
+    filt = _mm_adds_epi8(filt, work_a);
+    filt = _mm_adds_epi8(filt, work_a);
+    /* (vpx_filter + 3 * (qs0 - ps0)) & mask */
+    filt = _mm_and_si128(filt, mask);
+
+    filter1 = _mm_adds_epi8(filt, t4);
+    filter2 = _mm_adds_epi8(filt, t3);
+
+    filter1 = _mm_unpacklo_epi8(zero, filter1);
+    filter1 = _mm_srai_epi16(filter1, 0xB);
+    filter2 = _mm_unpacklo_epi8(zero, filter2);
+    filter2 = _mm_srai_epi16(filter2, 0xB);
+
+    /* Filter1 >> 3 */
+    filt = _mm_packs_epi16(filter2, _mm_subs_epi16(zero, filter1));
+    qs0ps0 = _mm_xor_si128(_mm_adds_epi8(qs0ps0, filt), t80);
+
+    /* filt >> 1 */
+    filt = _mm_adds_epi16(filter1, t1);
+    filt = _mm_srai_epi16(filt, 1);
+    filt = _mm_andnot_si128(_mm_srai_epi16(_mm_unpacklo_epi8(zero, hev), 0x8),
+                            filt);
+    filt = _mm_packs_epi16(filt, _mm_subs_epi16(zero, filt));
+    qs1ps1 = _mm_xor_si128(_mm_adds_epi8(qs1ps1, filt), t80);
+    // loopfilter done
+
+    {
+      __m128i work;
+      flat = _mm_max_epu8(
+          _mm_or_si128(_mm_subs_epu8(q2p2, q0p0), _mm_subs_epu8(q0p0, q2p2)),
+          _mm_or_si128(_mm_subs_epu8(q3p3, q0p0), _mm_subs_epu8(q0p0, q3p3)));
+      flat = _mm_max_epu8(abs_p1p0, flat);
+      flat = _mm_max_epu8(flat, _mm_srli_si128(flat, 8));
+      flat = _mm_subs_epu8(flat, one);
+      flat = _mm_cmpeq_epi8(flat, zero);
+      flat = _mm_and_si128(flat, mask);
+
+      q5p5 = _mm_loadl_epi64((__m128i *)(s - 6 * pitch));
+      q5p5 = _mm_castps_si128(
+          _mm_loadh_pi(_mm_castsi128_ps(q5p5), (__m64 *)(s + 5 * pitch)));
+
+      q6p6 = _mm_loadl_epi64((__m128i *)(s - 7 * pitch));
+      q6p6 = _mm_castps_si128(
+          _mm_loadh_pi(_mm_castsi128_ps(q6p6), (__m64 *)(s + 6 * pitch)));
+
+      flat2 = _mm_max_epu8(
+          _mm_or_si128(_mm_subs_epu8(q4p4, q0p0), _mm_subs_epu8(q0p0, q4p4)),
+          _mm_or_si128(_mm_subs_epu8(q5p5, q0p0), _mm_subs_epu8(q0p0, q5p5)));
+
+      q7p7 = _mm_loadl_epi64((__m128i *)(s - 8 * pitch));
+      q7p7 = _mm_castps_si128(
+          _mm_loadh_pi(_mm_castsi128_ps(q7p7), (__m64 *)(s + 7 * pitch)));
+
+      work = _mm_max_epu8(
+          _mm_or_si128(_mm_subs_epu8(q6p6, q0p0), _mm_subs_epu8(q0p0, q6p6)),
+          _mm_or_si128(_mm_subs_epu8(q7p7, q0p0), _mm_subs_epu8(q0p0, q7p7)));
+
+      flat2 = _mm_max_epu8(work, flat2);
+      flat2 = _mm_max_epu8(flat2, _mm_srli_si128(flat2, 8));
+      flat2 = _mm_subs_epu8(flat2, one);
+      flat2 = _mm_cmpeq_epi8(flat2, zero);
+      flat2 = _mm_and_si128(flat2, flat);  // flat2 & flat & mask
+    }
+
+    // ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+    // flat and wide flat calculations
+    {
+      const __m128i eight = _mm_set1_epi16(8);
+      const __m128i four = _mm_set1_epi16(4);
+      __m128i p7_16, p6_16, p5_16, p4_16, p3_16, p2_16, p1_16, p0_16;
+      __m128i q7_16, q6_16, q5_16, q4_16, q3_16, q2_16, q1_16, q0_16;
+      __m128i pixelFilter_p, pixelFilter_q;
+      __m128i pixetFilter_p2p1p0, pixetFilter_q2q1q0;
+      __m128i sum_p7, sum_q7, sum_p3, sum_q3, res_p, res_q;
+
+      p7_16 = _mm_unpacklo_epi8(q7p7, zero);
+      p6_16 = _mm_unpacklo_epi8(q6p6, zero);
+      p5_16 = _mm_unpacklo_epi8(q5p5, zero);
+      p4_16 = _mm_unpacklo_epi8(q4p4, zero);
+      p3_16 = _mm_unpacklo_epi8(q3p3, zero);
+      p2_16 = _mm_unpacklo_epi8(q2p2, zero);
+      p1_16 = _mm_unpacklo_epi8(q1p1, zero);
+      p0_16 = _mm_unpacklo_epi8(q0p0, zero);
+      q0_16 = _mm_unpackhi_epi8(q0p0, zero);
+      q1_16 = _mm_unpackhi_epi8(q1p1, zero);
+      q2_16 = _mm_unpackhi_epi8(q2p2, zero);
+      q3_16 = _mm_unpackhi_epi8(q3p3, zero);
+      q4_16 = _mm_unpackhi_epi8(q4p4, zero);
+      q5_16 = _mm_unpackhi_epi8(q5p5, zero);
+      q6_16 = _mm_unpackhi_epi8(q6p6, zero);
+      q7_16 = _mm_unpackhi_epi8(q7p7, zero);
+
+      pixelFilter_p = _mm_add_epi16(_mm_add_epi16(p6_16, p5_16),
+                                    _mm_add_epi16(p4_16, p3_16));
+      pixelFilter_q = _mm_add_epi16(_mm_add_epi16(q6_16, q5_16),
+                                    _mm_add_epi16(q4_16, q3_16));
+
+      pixetFilter_p2p1p0 = _mm_add_epi16(p0_16, _mm_add_epi16(p2_16, p1_16));
+      pixelFilter_p = _mm_add_epi16(pixelFilter_p, pixetFilter_p2p1p0);
+
+      pixetFilter_q2q1q0 = _mm_add_epi16(q0_16, _mm_add_epi16(q2_16, q1_16));
+      pixelFilter_q = _mm_add_epi16(pixelFilter_q, pixetFilter_q2q1q0);
+      pixelFilter_p =
+          _mm_add_epi16(eight, _mm_add_epi16(pixelFilter_p, pixelFilter_q));
+      pixetFilter_p2p1p0 = _mm_add_epi16(
+          four, _mm_add_epi16(pixetFilter_p2p1p0, pixetFilter_q2q1q0));
+      res_p = _mm_srli_epi16(
+          _mm_add_epi16(pixelFilter_p, _mm_add_epi16(p7_16, p0_16)), 4);
+      res_q = _mm_srli_epi16(
+          _mm_add_epi16(pixelFilter_p, _mm_add_epi16(q7_16, q0_16)), 4);
+      flat2_q0p0 = _mm_packus_epi16(res_p, res_q);
+      res_p = _mm_srli_epi16(
+          _mm_add_epi16(pixetFilter_p2p1p0, _mm_add_epi16(p3_16, p0_16)), 3);
+      res_q = _mm_srli_epi16(
+          _mm_add_epi16(pixetFilter_p2p1p0, _mm_add_epi16(q3_16, q0_16)), 3);
+
+      flat_q0p0 = _mm_packus_epi16(res_p, res_q);
+
+      sum_p7 = _mm_add_epi16(p7_16, p7_16);
+      sum_q7 = _mm_add_epi16(q7_16, q7_16);
+      sum_p3 = _mm_add_epi16(p3_16, p3_16);
+      sum_q3 = _mm_add_epi16(q3_16, q3_16);
+
+      pixelFilter_q = _mm_sub_epi16(pixelFilter_p, p6_16);
+      pixelFilter_p = _mm_sub_epi16(pixelFilter_p, q6_16);
+      res_p = _mm_srli_epi16(
+          _mm_add_epi16(pixelFilter_p, _mm_add_epi16(sum_p7, p1_16)), 4);
+      res_q = _mm_srli_epi16(
+          _mm_add_epi16(pixelFilter_q, _mm_add_epi16(sum_q7, q1_16)), 4);
+      flat2_q1p1 = _mm_packus_epi16(res_p, res_q);
+
+      pixetFilter_q2q1q0 = _mm_sub_epi16(pixetFilter_p2p1p0, p2_16);
+      pixetFilter_p2p1p0 = _mm_sub_epi16(pixetFilter_p2p1p0, q2_16);
+      res_p = _mm_srli_epi16(
+          _mm_add_epi16(pixetFilter_p2p1p0, _mm_add_epi16(sum_p3, p1_16)), 3);
+      res_q = _mm_srli_epi16(
+          _mm_add_epi16(pixetFilter_q2q1q0, _mm_add_epi16(sum_q3, q1_16)), 3);
+      flat_q1p1 = _mm_packus_epi16(res_p, res_q);
+
+      sum_p7 = _mm_add_epi16(sum_p7, p7_16);
+      sum_q7 = _mm_add_epi16(sum_q7, q7_16);
+      sum_p3 = _mm_add_epi16(sum_p3, p3_16);
+      sum_q3 = _mm_add_epi16(sum_q3, q3_16);
+
+      pixelFilter_p = _mm_sub_epi16(pixelFilter_p, q5_16);
+      pixelFilter_q = _mm_sub_epi16(pixelFilter_q, p5_16);
+      res_p = _mm_srli_epi16(
+          _mm_add_epi16(pixelFilter_p, _mm_add_epi16(sum_p7, p2_16)), 4);
+      res_q = _mm_srli_epi16(
+          _mm_add_epi16(pixelFilter_q, _mm_add_epi16(sum_q7, q2_16)), 4);
+      flat2_q2p2 = _mm_packus_epi16(res_p, res_q);
+
+      pixetFilter_p2p1p0 = _mm_sub_epi16(pixetFilter_p2p1p0, q1_16);
+      pixetFilter_q2q1q0 = _mm_sub_epi16(pixetFilter_q2q1q0, p1_16);
+
+      res_p = _mm_srli_epi16(
+          _mm_add_epi16(pixetFilter_p2p1p0, _mm_add_epi16(sum_p3, p2_16)), 3);
+      res_q = _mm_srli_epi16(
+          _mm_add_epi16(pixetFilter_q2q1q0, _mm_add_epi16(sum_q3, q2_16)), 3);
+      flat_q2p2 = _mm_packus_epi16(res_p, res_q);
+
+      sum_p7 = _mm_add_epi16(sum_p7, p7_16);
+      sum_q7 = _mm_add_epi16(sum_q7, q7_16);
+      pixelFilter_p = _mm_sub_epi16(pixelFilter_p, q4_16);
+      pixelFilter_q = _mm_sub_epi16(pixelFilter_q, p4_16);
+      res_p = _mm_srli_epi16(
+          _mm_add_epi16(pixelFilter_p, _mm_add_epi16(sum_p7, p3_16)), 4);
+      res_q = _mm_srli_epi16(
+          _mm_add_epi16(pixelFilter_q, _mm_add_epi16(sum_q7, q3_16)), 4);
+      flat2_q3p3 = _mm_packus_epi16(res_p, res_q);
+
+      sum_p7 = _mm_add_epi16(sum_p7, p7_16);
+      sum_q7 = _mm_add_epi16(sum_q7, q7_16);
+      pixelFilter_p = _mm_sub_epi16(pixelFilter_p, q3_16);
+      pixelFilter_q = _mm_sub_epi16(pixelFilter_q, p3_16);
+      res_p = _mm_srli_epi16(
+          _mm_add_epi16(pixelFilter_p, _mm_add_epi16(sum_p7, p4_16)), 4);
+      res_q = _mm_srli_epi16(
+          _mm_add_epi16(pixelFilter_q, _mm_add_epi16(sum_q7, q4_16)), 4);
+      flat2_q4p4 = _mm_packus_epi16(res_p, res_q);
+
+      sum_p7 = _mm_add_epi16(sum_p7, p7_16);
+      sum_q7 = _mm_add_epi16(sum_q7, q7_16);
+      pixelFilter_p = _mm_sub_epi16(pixelFilter_p, q2_16);
+      pixelFilter_q = _mm_sub_epi16(pixelFilter_q, p2_16);
+      res_p = _mm_srli_epi16(
+          _mm_add_epi16(pixelFilter_p, _mm_add_epi16(sum_p7, p5_16)), 4);
+      res_q = _mm_srli_epi16(
+          _mm_add_epi16(pixelFilter_q, _mm_add_epi16(sum_q7, q5_16)), 4);
+      flat2_q5p5 = _mm_packus_epi16(res_p, res_q);
+
+      sum_p7 = _mm_add_epi16(sum_p7, p7_16);
+      sum_q7 = _mm_add_epi16(sum_q7, q7_16);
+      pixelFilter_p = _mm_sub_epi16(pixelFilter_p, q1_16);
+      pixelFilter_q = _mm_sub_epi16(pixelFilter_q, p1_16);
+      res_p = _mm_srli_epi16(
+          _mm_add_epi16(pixelFilter_p, _mm_add_epi16(sum_p7, p6_16)), 4);
+      res_q = _mm_srli_epi16(
+          _mm_add_epi16(pixelFilter_q, _mm_add_epi16(sum_q7, q6_16)), 4);
+      flat2_q6p6 = _mm_packus_epi16(res_p, res_q);
+    }
+    // wide flat
+    // ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+    flat = _mm_shuffle_epi32(flat, 68);
+    flat2 = _mm_shuffle_epi32(flat2, 68);
+
+    q2p2 = _mm_andnot_si128(flat, q2p2);
+    flat_q2p2 = _mm_and_si128(flat, flat_q2p2);
+    q2p2 = _mm_or_si128(q2p2, flat_q2p2);
+
+    qs1ps1 = _mm_andnot_si128(flat, qs1ps1);
+    flat_q1p1 = _mm_and_si128(flat, flat_q1p1);
+    q1p1 = _mm_or_si128(qs1ps1, flat_q1p1);
+
+    qs0ps0 = _mm_andnot_si128(flat, qs0ps0);
+    flat_q0p0 = _mm_and_si128(flat, flat_q0p0);
+    q0p0 = _mm_or_si128(qs0ps0, flat_q0p0);
+
+    q6p6 = _mm_andnot_si128(flat2, q6p6);
+    flat2_q6p6 = _mm_and_si128(flat2, flat2_q6p6);
+    q6p6 = _mm_or_si128(q6p6, flat2_q6p6);
+    _mm_storel_epi64((__m128i *)(s - 7 * pitch), q6p6);
+    _mm_storeh_pi((__m64 *)(s + 6 * pitch), _mm_castsi128_ps(q6p6));
+
+    q5p5 = _mm_andnot_si128(flat2, q5p5);
+    flat2_q5p5 = _mm_and_si128(flat2, flat2_q5p5);
+    q5p5 = _mm_or_si128(q5p5, flat2_q5p5);
+    _mm_storel_epi64((__m128i *)(s - 6 * pitch), q5p5);
+    _mm_storeh_pi((__m64 *)(s + 5 * pitch), _mm_castsi128_ps(q5p5));
+
+    q4p4 = _mm_andnot_si128(flat2, q4p4);
+    flat2_q4p4 = _mm_and_si128(flat2, flat2_q4p4);
+    q4p4 = _mm_or_si128(q4p4, flat2_q4p4);
+    _mm_storel_epi64((__m128i *)(s - 5 * pitch), q4p4);
+    _mm_storeh_pi((__m64 *)(s + 4 * pitch), _mm_castsi128_ps(q4p4));
+
+    q3p3 = _mm_andnot_si128(flat2, q3p3);
+    flat2_q3p3 = _mm_and_si128(flat2, flat2_q3p3);
+    q3p3 = _mm_or_si128(q3p3, flat2_q3p3);
+    _mm_storel_epi64((__m128i *)(s - 4 * pitch), q3p3);
+    _mm_storeh_pi((__m64 *)(s + 3 * pitch), _mm_castsi128_ps(q3p3));
+
+    q2p2 = _mm_andnot_si128(flat2, q2p2);
+    flat2_q2p2 = _mm_and_si128(flat2, flat2_q2p2);
+    q2p2 = _mm_or_si128(q2p2, flat2_q2p2);
+    _mm_storel_epi64((__m128i *)(s - 3 * pitch), q2p2);
+    _mm_storeh_pi((__m64 *)(s + 2 * pitch), _mm_castsi128_ps(q2p2));
+
+    q1p1 = _mm_andnot_si128(flat2, q1p1);
+    flat2_q1p1 = _mm_and_si128(flat2, flat2_q1p1);
+    q1p1 = _mm_or_si128(q1p1, flat2_q1p1);
+    _mm_storel_epi64((__m128i *)(s - 2 * pitch), q1p1);
+    _mm_storeh_pi((__m64 *)(s + 1 * pitch), _mm_castsi128_ps(q1p1));
+
+    q0p0 = _mm_andnot_si128(flat2, q0p0);
+    flat2_q0p0 = _mm_and_si128(flat2, flat2_q0p0);
+    q0p0 = _mm_or_si128(q0p0, flat2_q0p0);
+    _mm_storel_epi64((__m128i *)(s - 1 * pitch), q0p0);
+    _mm_storeh_pi((__m64 *)(s - 0 * pitch), _mm_castsi128_ps(q0p0));
+  }
+}
+
+DECLARE_ALIGNED(32, static const uint8_t, filt_loopfilter_avx2[32]) = {
+  0, 128, 1, 128, 2,  128, 3,  128, 4,  128, 5,  128, 6,  128, 7,  128,
+  8, 128, 9, 128, 10, 128, 11, 128, 12, 128, 13, 128, 14, 128, 15, 128
+};
+
+void vpx_lpf_horizontal_16_dual_avx2(unsigned char *s, int pitch,
+                                     const unsigned char *blimit,
+                                     const unsigned char *limit,
+                                     const unsigned char *thresh) {
+  __m128i mask, hev, flat, flat2;
+  const __m128i zero = _mm_setzero_si128();
+  const __m128i one = _mm_set1_epi8(1);
+  __m128i p7, p6, p5;
+  __m128i p4, p3, p2, p1, p0, q0, q1, q2, q3, q4;
+  __m128i q5, q6, q7;
+  __m256i p256_7, q256_7, p256_6, q256_6, p256_5, q256_5, p256_4, q256_4,
+      p256_3, q256_3, p256_2, q256_2, p256_1, q256_1, p256_0, q256_0;
+
+  const __m128i thresh_v =
+      _mm_broadcastb_epi8(_mm_cvtsi32_si128((int)thresh[0]));
+  const __m128i limit_v = _mm_broadcastb_epi8(_mm_cvtsi32_si128((int)limit[0]));
+  const __m128i blimit_v =
+      _mm_broadcastb_epi8(_mm_cvtsi32_si128((int)blimit[0]));
+
+  p256_4 = _mm256_castpd_si256(
+      _mm256_broadcast_pd((__m128d const *)(s - 5 * pitch)));
+  p256_3 = _mm256_castpd_si256(
+      _mm256_broadcast_pd((__m128d const *)(s - 4 * pitch)));
+  p256_2 = _mm256_castpd_si256(
+      _mm256_broadcast_pd((__m128d const *)(s - 3 * pitch)));
+  p256_1 = _mm256_castpd_si256(
+      _mm256_broadcast_pd((__m128d const *)(s - 2 * pitch)));
+  p256_0 = _mm256_castpd_si256(
+      _mm256_broadcast_pd((__m128d const *)(s - 1 * pitch)));
+  q256_0 = _mm256_castpd_si256(
+      _mm256_broadcast_pd((__m128d const *)(s - 0 * pitch)));
+  q256_1 = _mm256_castpd_si256(
+      _mm256_broadcast_pd((__m128d const *)(s + 1 * pitch)));
+  q256_2 = _mm256_castpd_si256(
+      _mm256_broadcast_pd((__m128d const *)(s + 2 * pitch)));
+  q256_3 = _mm256_castpd_si256(
+      _mm256_broadcast_pd((__m128d const *)(s + 3 * pitch)));
+  q256_4 = _mm256_castpd_si256(
+      _mm256_broadcast_pd((__m128d const *)(s + 4 * pitch)));
+
+  p4 = _mm256_castsi256_si128(p256_4);
+  p3 = _mm256_castsi256_si128(p256_3);
+  p2 = _mm256_castsi256_si128(p256_2);
+  p1 = _mm256_castsi256_si128(p256_1);
+  p0 = _mm256_castsi256_si128(p256_0);
+  q0 = _mm256_castsi256_si128(q256_0);
+  q1 = _mm256_castsi256_si128(q256_1);
+  q2 = _mm256_castsi256_si128(q256_2);
+  q3 = _mm256_castsi256_si128(q256_3);
+  q4 = _mm256_castsi256_si128(q256_4);
+
+  {
+    const __m128i abs_p1p0 =
+        _mm_or_si128(_mm_subs_epu8(p1, p0), _mm_subs_epu8(p0, p1));
+    const __m128i abs_q1q0 =
+        _mm_or_si128(_mm_subs_epu8(q1, q0), _mm_subs_epu8(q0, q1));
+    const __m128i fe = _mm_set1_epi8((int8_t)0xfe);
+    const __m128i ff = _mm_cmpeq_epi8(abs_p1p0, abs_p1p0);
+    __m128i abs_p0q0 =
+        _mm_or_si128(_mm_subs_epu8(p0, q0), _mm_subs_epu8(q0, p0));
+    __m128i abs_p1q1 =
+        _mm_or_si128(_mm_subs_epu8(p1, q1), _mm_subs_epu8(q1, p1));
+    __m128i work;
+    flat = _mm_max_epu8(abs_p1p0, abs_q1q0);
+    hev = _mm_subs_epu8(flat, thresh_v);
+    hev = _mm_xor_si128(_mm_cmpeq_epi8(hev, zero), ff);
+
+    abs_p0q0 = _mm_adds_epu8(abs_p0q0, abs_p0q0);
+    abs_p1q1 = _mm_srli_epi16(_mm_and_si128(abs_p1q1, fe), 1);
+    mask = _mm_subs_epu8(_mm_adds_epu8(abs_p0q0, abs_p1q1), blimit_v);
+    mask = _mm_xor_si128(_mm_cmpeq_epi8(mask, zero), ff);
+    // mask |= (abs(p0 - q0) * 2 + abs(p1 - q1) / 2  > blimit) * -1;
+    mask = _mm_max_epu8(flat, mask);
+    // mask |= (abs(p1 - p0) > limit) * -1;
+    // mask |= (abs(q1 - q0) > limit) * -1;
+    work = _mm_max_epu8(
+        _mm_or_si128(_mm_subs_epu8(p2, p1), _mm_subs_epu8(p1, p2)),
+        _mm_or_si128(_mm_subs_epu8(p3, p2), _mm_subs_epu8(p2, p3)));
+    mask = _mm_max_epu8(work, mask);
+    work = _mm_max_epu8(
+        _mm_or_si128(_mm_subs_epu8(q2, q1), _mm_subs_epu8(q1, q2)),
+        _mm_or_si128(_mm_subs_epu8(q3, q2), _mm_subs_epu8(q2, q3)));
+    mask = _mm_max_epu8(work, mask);
+    mask = _mm_subs_epu8(mask, limit_v);
+    mask = _mm_cmpeq_epi8(mask, zero);
+  }
+
+  // lp filter
+  {
+    const __m128i t4 = _mm_set1_epi8(4);
+    const __m128i t3 = _mm_set1_epi8(3);
+    const __m128i t80 = _mm_set1_epi8((int8_t)0x80);
+    const __m128i te0 = _mm_set1_epi8((int8_t)0xe0);
+    const __m128i t1f = _mm_set1_epi8(0x1f);
+    const __m128i t1 = _mm_set1_epi8(0x1);
+    const __m128i t7f = _mm_set1_epi8(0x7f);
+
+    __m128i ps1 = _mm_xor_si128(p1, t80);
+    __m128i ps0 = _mm_xor_si128(p0, t80);
+    __m128i qs0 = _mm_xor_si128(q0, t80);
+    __m128i qs1 = _mm_xor_si128(q1, t80);
+    __m128i filt;
+    __m128i work_a;
+    __m128i filter1, filter2;
+    __m128i flat2_p6, flat2_p5, flat2_p4, flat2_p3, flat2_p2, flat2_p1,
+        flat2_p0, flat2_q0, flat2_q1, flat2_q2, flat2_q3, flat2_q4, flat2_q5,
+        flat2_q6, flat_p2, flat_p1, flat_p0, flat_q0, flat_q1, flat_q2;
+
+    filt = _mm_and_si128(_mm_subs_epi8(ps1, qs1), hev);
+    work_a = _mm_subs_epi8(qs0, ps0);
+    filt = _mm_adds_epi8(filt, work_a);
+    filt = _mm_adds_epi8(filt, work_a);
+    filt = _mm_adds_epi8(filt, work_a);
+    /* (vpx_filter + 3 * (qs0 - ps0)) & mask */
+    filt = _mm_and_si128(filt, mask);
+
+    filter1 = _mm_adds_epi8(filt, t4);
+    filter2 = _mm_adds_epi8(filt, t3);
+
+    /* Filter1 >> 3 */
+    work_a = _mm_cmpgt_epi8(zero, filter1);
+    filter1 = _mm_srli_epi16(filter1, 3);
+    work_a = _mm_and_si128(work_a, te0);
+    filter1 = _mm_and_si128(filter1, t1f);
+    filter1 = _mm_or_si128(filter1, work_a);
+    qs0 = _mm_xor_si128(_mm_subs_epi8(qs0, filter1), t80);
+
+    /* Filter2 >> 3 */
+    work_a = _mm_cmpgt_epi8(zero, filter2);
+    filter2 = _mm_srli_epi16(filter2, 3);
+    work_a = _mm_and_si128(work_a, te0);
+    filter2 = _mm_and_si128(filter2, t1f);
+    filter2 = _mm_or_si128(filter2, work_a);
+    ps0 = _mm_xor_si128(_mm_adds_epi8(ps0, filter2), t80);
+
+    /* filt >> 1 */
+    filt = _mm_adds_epi8(filter1, t1);
+    work_a = _mm_cmpgt_epi8(zero, filt);
+    filt = _mm_srli_epi16(filt, 1);
+    work_a = _mm_and_si128(work_a, t80);
+    filt = _mm_and_si128(filt, t7f);
+    filt = _mm_or_si128(filt, work_a);
+    filt = _mm_andnot_si128(hev, filt);
+    ps1 = _mm_xor_si128(_mm_adds_epi8(ps1, filt), t80);
+    qs1 = _mm_xor_si128(_mm_subs_epi8(qs1, filt), t80);
+    // loopfilter done
+
+    {
+      __m128i work;
+      work = _mm_max_epu8(
+          _mm_or_si128(_mm_subs_epu8(p2, p0), _mm_subs_epu8(p0, p2)),
+          _mm_or_si128(_mm_subs_epu8(q2, q0), _mm_subs_epu8(q0, q2)));
+      flat = _mm_max_epu8(work, flat);
+      work = _mm_max_epu8(
+          _mm_or_si128(_mm_subs_epu8(p3, p0), _mm_subs_epu8(p0, p3)),
+          _mm_or_si128(_mm_subs_epu8(q3, q0), _mm_subs_epu8(q0, q3)));
+      flat = _mm_max_epu8(work, flat);
+      work = _mm_max_epu8(
+          _mm_or_si128(_mm_subs_epu8(p4, p0), _mm_subs_epu8(p0, p4)),
+          _mm_or_si128(_mm_subs_epu8(q4, q0), _mm_subs_epu8(q0, q4)));
+      flat = _mm_subs_epu8(flat, one);
+      flat = _mm_cmpeq_epi8(flat, zero);
+      flat = _mm_and_si128(flat, mask);
+
+      p256_5 = _mm256_castpd_si256(
+          _mm256_broadcast_pd((__m128d const *)(s - 6 * pitch)));
+      q256_5 = _mm256_castpd_si256(
+          _mm256_broadcast_pd((__m128d const *)(s + 5 * pitch)));
+      p5 = _mm256_castsi256_si128(p256_5);
+      q5 = _mm256_castsi256_si128(q256_5);
+      flat2 = _mm_max_epu8(
+          _mm_or_si128(_mm_subs_epu8(p5, p0), _mm_subs_epu8(p0, p5)),
+          _mm_or_si128(_mm_subs_epu8(q5, q0), _mm_subs_epu8(q0, q5)));
+
+      flat2 = _mm_max_epu8(work, flat2);
+      p256_6 = _mm256_castpd_si256(
+          _mm256_broadcast_pd((__m128d const *)(s - 7 * pitch)));
+      q256_6 = _mm256_castpd_si256(
+          _mm256_broadcast_pd((__m128d const *)(s + 6 * pitch)));
+      p6 = _mm256_castsi256_si128(p256_6);
+      q6 = _mm256_castsi256_si128(q256_6);
+      work = _mm_max_epu8(
+          _mm_or_si128(_mm_subs_epu8(p6, p0), _mm_subs_epu8(p0, p6)),
+          _mm_or_si128(_mm_subs_epu8(q6, q0), _mm_subs_epu8(q0, q6)));
+
+      flat2 = _mm_max_epu8(work, flat2);
+
+      p256_7 = _mm256_castpd_si256(
+          _mm256_broadcast_pd((__m128d const *)(s - 8 * pitch)));
+      q256_7 = _mm256_castpd_si256(
+          _mm256_broadcast_pd((__m128d const *)(s + 7 * pitch)));
+      p7 = _mm256_castsi256_si128(p256_7);
+      q7 = _mm256_castsi256_si128(q256_7);
+      work = _mm_max_epu8(
+          _mm_or_si128(_mm_subs_epu8(p7, p0), _mm_subs_epu8(p0, p7)),
+          _mm_or_si128(_mm_subs_epu8(q7, q0), _mm_subs_epu8(q0, q7)));
+
+      flat2 = _mm_max_epu8(work, flat2);
+      flat2 = _mm_subs_epu8(flat2, one);
+      flat2 = _mm_cmpeq_epi8(flat2, zero);
+      flat2 = _mm_and_si128(flat2, flat);  // flat2 & flat & mask
+    }
+
+    // ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+    // flat and wide flat calculations
+    {
+      const __m256i eight = _mm256_set1_epi16(8);
+      const __m256i four = _mm256_set1_epi16(4);
+      __m256i pixelFilter_p, pixelFilter_q, pixetFilter_p2p1p0,
+          pixetFilter_q2q1q0, sum_p7, sum_q7, sum_p3, sum_q3, res_p, res_q;
+
+      const __m256i filter =
+          _mm256_load_si256((__m256i const *)filt_loopfilter_avx2);
+      p256_7 = _mm256_shuffle_epi8(p256_7, filter);
+      p256_6 = _mm256_shuffle_epi8(p256_6, filter);
+      p256_5 = _mm256_shuffle_epi8(p256_5, filter);
+      p256_4 = _mm256_shuffle_epi8(p256_4, filter);
+      p256_3 = _mm256_shuffle_epi8(p256_3, filter);
+      p256_2 = _mm256_shuffle_epi8(p256_2, filter);
+      p256_1 = _mm256_shuffle_epi8(p256_1, filter);
+      p256_0 = _mm256_shuffle_epi8(p256_0, filter);
+      q256_0 = _mm256_shuffle_epi8(q256_0, filter);
+      q256_1 = _mm256_shuffle_epi8(q256_1, filter);
+      q256_2 = _mm256_shuffle_epi8(q256_2, filter);
+      q256_3 = _mm256_shuffle_epi8(q256_3, filter);
+      q256_4 = _mm256_shuffle_epi8(q256_4, filter);
+      q256_5 = _mm256_shuffle_epi8(q256_5, filter);
+      q256_6 = _mm256_shuffle_epi8(q256_6, filter);
+      q256_7 = _mm256_shuffle_epi8(q256_7, filter);
+
+      pixelFilter_p = _mm256_add_epi16(_mm256_add_epi16(p256_6, p256_5),
+                                       _mm256_add_epi16(p256_4, p256_3));
+      pixelFilter_q = _mm256_add_epi16(_mm256_add_epi16(q256_6, q256_5),
+                                       _mm256_add_epi16(q256_4, q256_3));
+
+      pixetFilter_p2p1p0 =
+          _mm256_add_epi16(p256_0, _mm256_add_epi16(p256_2, p256_1));
+      pixelFilter_p = _mm256_add_epi16(pixelFilter_p, pixetFilter_p2p1p0);
+
+      pixetFilter_q2q1q0 =
+          _mm256_add_epi16(q256_0, _mm256_add_epi16(q256_2, q256_1));
+      pixelFilter_q = _mm256_add_epi16(pixelFilter_q, pixetFilter_q2q1q0);
+
+      pixelFilter_p = _mm256_add_epi16(
+          eight, _mm256_add_epi16(pixelFilter_p, pixelFilter_q));
+
+      pixetFilter_p2p1p0 = _mm256_add_epi16(
+          four, _mm256_add_epi16(pixetFilter_p2p1p0, pixetFilter_q2q1q0));
+
+      res_p = _mm256_srli_epi16(
+          _mm256_add_epi16(pixelFilter_p, _mm256_add_epi16(p256_7, p256_0)), 4);
+
+      flat2_p0 = _mm256_castsi256_si128(
+          _mm256_permute4x64_epi64(_mm256_packus_epi16(res_p, res_p), 168));
+
+      res_q = _mm256_srli_epi16(
+          _mm256_add_epi16(pixelFilter_p, _mm256_add_epi16(q256_7, q256_0)), 4);
+
+      flat2_q0 = _mm256_castsi256_si128(
+          _mm256_permute4x64_epi64(_mm256_packus_epi16(res_q, res_q), 168));
+
+      res_p =
+          _mm256_srli_epi16(_mm256_add_epi16(pixetFilter_p2p1p0,
+                                             _mm256_add_epi16(p256_3, p256_0)),
+                            3);
+
+      flat_p0 = _mm256_castsi256_si128(
+          _mm256_permute4x64_epi64(_mm256_packus_epi16(res_p, res_p), 168));
+
+      res_q =
+          _mm256_srli_epi16(_mm256_add_epi16(pixetFilter_p2p1p0,
+                                             _mm256_add_epi16(q256_3, q256_0)),
+                            3);
+
+      flat_q0 = _mm256_castsi256_si128(
+          _mm256_permute4x64_epi64(_mm256_packus_epi16(res_q, res_q), 168));
+
+      sum_p7 = _mm256_add_epi16(p256_7, p256_7);
+
+      sum_q7 = _mm256_add_epi16(q256_7, q256_7);
+
+      sum_p3 = _mm256_add_epi16(p256_3, p256_3);
+
+      sum_q3 = _mm256_add_epi16(q256_3, q256_3);
+
+      pixelFilter_q = _mm256_sub_epi16(pixelFilter_p, p256_6);
+
+      pixelFilter_p = _mm256_sub_epi16(pixelFilter_p, q256_6);
+
+      res_p = _mm256_srli_epi16(
+          _mm256_add_epi16(pixelFilter_p, _mm256_add_epi16(sum_p7, p256_1)), 4);
+
+      flat2_p1 = _mm256_castsi256_si128(
+          _mm256_permute4x64_epi64(_mm256_packus_epi16(res_p, res_p), 168));
+
+      res_q = _mm256_srli_epi16(
+          _mm256_add_epi16(pixelFilter_q, _mm256_add_epi16(sum_q7, q256_1)), 4);
+
+      flat2_q1 = _mm256_castsi256_si128(
+          _mm256_permute4x64_epi64(_mm256_packus_epi16(res_q, res_q), 168));
+
+      pixetFilter_q2q1q0 = _mm256_sub_epi16(pixetFilter_p2p1p0, p256_2);
+
+      pixetFilter_p2p1p0 = _mm256_sub_epi16(pixetFilter_p2p1p0, q256_2);
+
+      res_p =
+          _mm256_srli_epi16(_mm256_add_epi16(pixetFilter_p2p1p0,
+                                             _mm256_add_epi16(sum_p3, p256_1)),
+                            3);
+
+      flat_p1 = _mm256_castsi256_si128(
+          _mm256_permute4x64_epi64(_mm256_packus_epi16(res_p, res_p), 168));
+
+      res_q =
+          _mm256_srli_epi16(_mm256_add_epi16(pixetFilter_q2q1q0,
+                                             _mm256_add_epi16(sum_q3, q256_1)),
+                            3);
+
+      flat_q1 = _mm256_castsi256_si128(
+          _mm256_permute4x64_epi64(_mm256_packus_epi16(res_q, res_q), 168));
+
+      sum_p7 = _mm256_add_epi16(sum_p7, p256_7);
+
+      sum_q7 = _mm256_add_epi16(sum_q7, q256_7);
+
+      sum_p3 = _mm256_add_epi16(sum_p3, p256_3);
+
+      sum_q3 = _mm256_add_epi16(sum_q3, q256_3);
+
+      pixelFilter_p = _mm256_sub_epi16(pixelFilter_p, q256_5);
+
+      pixelFilter_q = _mm256_sub_epi16(pixelFilter_q, p256_5);
+
+      res_p = _mm256_srli_epi16(
+          _mm256_add_epi16(pixelFilter_p, _mm256_add_epi16(sum_p7, p256_2)), 4);
+
+      flat2_p2 = _mm256_castsi256_si128(
+          _mm256_permute4x64_epi64(_mm256_packus_epi16(res_p, res_p), 168));
+
+      res_q = _mm256_srli_epi16(
+          _mm256_add_epi16(pixelFilter_q, _mm256_add_epi16(sum_q7, q256_2)), 4);
+
+      flat2_q2 = _mm256_castsi256_si128(
+          _mm256_permute4x64_epi64(_mm256_packus_epi16(res_q, res_q), 168));
+
+      pixetFilter_p2p1p0 = _mm256_sub_epi16(pixetFilter_p2p1p0, q256_1);
+
+      pixetFilter_q2q1q0 = _mm256_sub_epi16(pixetFilter_q2q1q0, p256_1);
+
+      res_p =
+          _mm256_srli_epi16(_mm256_add_epi16(pixetFilter_p2p1p0,
+                                             _mm256_add_epi16(sum_p3, p256_2)),
+                            3);
+
+      flat_p2 = _mm256_castsi256_si128(
+          _mm256_permute4x64_epi64(_mm256_packus_epi16(res_p, res_p), 168));
+
+      res_q =
+          _mm256_srli_epi16(_mm256_add_epi16(pixetFilter_q2q1q0,
+                                             _mm256_add_epi16(sum_q3, q256_2)),
+                            3);
+
+      flat_q2 = _mm256_castsi256_si128(
+          _mm256_permute4x64_epi64(_mm256_packus_epi16(res_q, res_q), 168));
+
+      sum_p7 = _mm256_add_epi16(sum_p7, p256_7);
+
+      sum_q7 = _mm256_add_epi16(sum_q7, q256_7);
+
+      pixelFilter_p = _mm256_sub_epi16(pixelFilter_p, q256_4);
+
+      pixelFilter_q = _mm256_sub_epi16(pixelFilter_q, p256_4);
+
+      res_p = _mm256_srli_epi16(
+          _mm256_add_epi16(pixelFilter_p, _mm256_add_epi16(sum_p7, p256_3)), 4);
+
+      flat2_p3 = _mm256_castsi256_si128(
+          _mm256_permute4x64_epi64(_mm256_packus_epi16(res_p, res_p), 168));
+
+      res_q = _mm256_srli_epi16(
+          _mm256_add_epi16(pixelFilter_q, _mm256_add_epi16(sum_q7, q256_3)), 4);
+
+      flat2_q3 = _mm256_castsi256_si128(
+          _mm256_permute4x64_epi64(_mm256_packus_epi16(res_q, res_q), 168));
+
+      sum_p7 = _mm256_add_epi16(sum_p7, p256_7);
+
+      sum_q7 = _mm256_add_epi16(sum_q7, q256_7);
+
+      pixelFilter_p = _mm256_sub_epi16(pixelFilter_p, q256_3);
+
+      pixelFilter_q = _mm256_sub_epi16(pixelFilter_q, p256_3);
+
+      res_p = _mm256_srli_epi16(
+          _mm256_add_epi16(pixelFilter_p, _mm256_add_epi16(sum_p7, p256_4)), 4);
+
+      flat2_p4 = _mm256_castsi256_si128(
+          _mm256_permute4x64_epi64(_mm256_packus_epi16(res_p, res_p), 168));
+
+      res_q = _mm256_srli_epi16(
+          _mm256_add_epi16(pixelFilter_q, _mm256_add_epi16(sum_q7, q256_4)), 4);
+
+      flat2_q4 = _mm256_castsi256_si128(
+          _mm256_permute4x64_epi64(_mm256_packus_epi16(res_q, res_q), 168));
+
+      sum_p7 = _mm256_add_epi16(sum_p7, p256_7);
+
+      sum_q7 = _mm256_add_epi16(sum_q7, q256_7);
+
+      pixelFilter_p = _mm256_sub_epi16(pixelFilter_p, q256_2);
+
+      pixelFilter_q = _mm256_sub_epi16(pixelFilter_q, p256_2);
+
+      res_p = _mm256_srli_epi16(
+          _mm256_add_epi16(pixelFilter_p, _mm256_add_epi16(sum_p7, p256_5)), 4);
+
+      flat2_p5 = _mm256_castsi256_si128(
+          _mm256_permute4x64_epi64(_mm256_packus_epi16(res_p, res_p), 168));
+
+      res_q = _mm256_srli_epi16(
+          _mm256_add_epi16(pixelFilter_q, _mm256_add_epi16(sum_q7, q256_5)), 4);
+
+      flat2_q5 = _mm256_castsi256_si128(
+          _mm256_permute4x64_epi64(_mm256_packus_epi16(res_q, res_q), 168));
+
+      sum_p7 = _mm256_add_epi16(sum_p7, p256_7);
+
+      sum_q7 = _mm256_add_epi16(sum_q7, q256_7);
+
+      pixelFilter_p = _mm256_sub_epi16(pixelFilter_p, q256_1);
+
+      pixelFilter_q = _mm256_sub_epi16(pixelFilter_q, p256_1);
+
+      res_p = _mm256_srli_epi16(
+          _mm256_add_epi16(pixelFilter_p, _mm256_add_epi16(sum_p7, p256_6)), 4);
+
+      flat2_p6 = _mm256_castsi256_si128(
+          _mm256_permute4x64_epi64(_mm256_packus_epi16(res_p, res_p), 168));
+
+      res_q = _mm256_srli_epi16(
+          _mm256_add_epi16(pixelFilter_q, _mm256_add_epi16(sum_q7, q256_6)), 4);
+
+      flat2_q6 = _mm256_castsi256_si128(
+          _mm256_permute4x64_epi64(_mm256_packus_epi16(res_q, res_q), 168));
+    }
+
+    // wide flat
+    // ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+    p2 = _mm_andnot_si128(flat, p2);
+    flat_p2 = _mm_and_si128(flat, flat_p2);
+    p2 = _mm_or_si128(flat_p2, p2);
+
+    p1 = _mm_andnot_si128(flat, ps1);
+    flat_p1 = _mm_and_si128(flat, flat_p1);
+    p1 = _mm_or_si128(flat_p1, p1);
+
+    p0 = _mm_andnot_si128(flat, ps0);
+    flat_p0 = _mm_and_si128(flat, flat_p0);
+    p0 = _mm_or_si128(flat_p0, p0);
+
+    q0 = _mm_andnot_si128(flat, qs0);
+    flat_q0 = _mm_and_si128(flat, flat_q0);
+    q0 = _mm_or_si128(flat_q0, q0);
+
+    q1 = _mm_andnot_si128(flat, qs1);
+    flat_q1 = _mm_and_si128(flat, flat_q1);
+    q1 = _mm_or_si128(flat_q1, q1);
+
+    q2 = _mm_andnot_si128(flat, q2);
+    flat_q2 = _mm_and_si128(flat, flat_q2);
+    q2 = _mm_or_si128(flat_q2, q2);
+
+    p6 = _mm_andnot_si128(flat2, p6);
+    flat2_p6 = _mm_and_si128(flat2, flat2_p6);
+    p6 = _mm_or_si128(flat2_p6, p6);
+    _mm_storeu_si128((__m128i *)(s - 7 * pitch), p6);
+
+    p5 = _mm_andnot_si128(flat2, p5);
+    flat2_p5 = _mm_and_si128(flat2, flat2_p5);
+    p5 = _mm_or_si128(flat2_p5, p5);
+    _mm_storeu_si128((__m128i *)(s - 6 * pitch), p5);
+
+    p4 = _mm_andnot_si128(flat2, p4);
+    flat2_p4 = _mm_and_si128(flat2, flat2_p4);
+    p4 = _mm_or_si128(flat2_p4, p4);
+    _mm_storeu_si128((__m128i *)(s - 5 * pitch), p4);
+
+    p3 = _mm_andnot_si128(flat2, p3);
+    flat2_p3 = _mm_and_si128(flat2, flat2_p3);
+    p3 = _mm_or_si128(flat2_p3, p3);
+    _mm_storeu_si128((__m128i *)(s - 4 * pitch), p3);
+
+    p2 = _mm_andnot_si128(flat2, p2);
+    flat2_p2 = _mm_and_si128(flat2, flat2_p2);
+    p2 = _mm_or_si128(flat2_p2, p2);
+    _mm_storeu_si128((__m128i *)(s - 3 * pitch), p2);
+
+    p1 = _mm_andnot_si128(flat2, p1);
+    flat2_p1 = _mm_and_si128(flat2, flat2_p1);
+    p1 = _mm_or_si128(flat2_p1, p1);
+    _mm_storeu_si128((__m128i *)(s - 2 * pitch), p1);
+
+    p0 = _mm_andnot_si128(flat2, p0);
+    flat2_p0 = _mm_and_si128(flat2, flat2_p0);
+    p0 = _mm_or_si128(flat2_p0, p0);
+    _mm_storeu_si128((__m128i *)(s - 1 * pitch), p0);
+
+    q0 = _mm_andnot_si128(flat2, q0);
+    flat2_q0 = _mm_and_si128(flat2, flat2_q0);
+    q0 = _mm_or_si128(flat2_q0, q0);
+    _mm_storeu_si128((__m128i *)(s - 0 * pitch), q0);
+
+    q1 = _mm_andnot_si128(flat2, q1);
+    flat2_q1 = _mm_and_si128(flat2, flat2_q1);
+    q1 = _mm_or_si128(flat2_q1, q1);
+    _mm_storeu_si128((__m128i *)(s + 1 * pitch), q1);
+
+    q2 = _mm_andnot_si128(flat2, q2);
+    flat2_q2 = _mm_and_si128(flat2, flat2_q2);
+    q2 = _mm_or_si128(flat2_q2, q2);
+    _mm_storeu_si128((__m128i *)(s + 2 * pitch), q2);
+
+    q3 = _mm_andnot_si128(flat2, q3);
+    flat2_q3 = _mm_and_si128(flat2, flat2_q3);
+    q3 = _mm_or_si128(flat2_q3, q3);
+    _mm_storeu_si128((__m128i *)(s + 3 * pitch), q3);
+
+    q4 = _mm_andnot_si128(flat2, q4);
+    flat2_q4 = _mm_and_si128(flat2, flat2_q4);
+    q4 = _mm_or_si128(flat2_q4, q4);
+    _mm_storeu_si128((__m128i *)(s + 4 * pitch), q4);
+
+    q5 = _mm_andnot_si128(flat2, q5);
+    flat2_q5 = _mm_and_si128(flat2, flat2_q5);
+    q5 = _mm_or_si128(flat2_q5, q5);
+    _mm_storeu_si128((__m128i *)(s + 5 * pitch), q5);
+
+    q6 = _mm_andnot_si128(flat2, q6);
+    flat2_q6 = _mm_and_si128(flat2, flat2_q6);
+    q6 = _mm_or_si128(flat2_q6, q6);
+    _mm_storeu_si128((__m128i *)(s + 6 * pitch), q6);
+  }
+}