shithub: libvpx

Download patch

ref: 28762341acfab3cd93710da71036ff57195220b4
parent: a059dc09861d8299b6736f06825146b7009ad520
parent: 7c0529728a24cf9f812a3229eb3881998b28eb0d
author: Linfeng Zhang <linfengz@google.com>
date: Tue Sep 26 12:10:46 EDT 2017

Merge changes Ib9105462,Idfac00ed,If8d8a0e2

* changes:
  cosmetics: NEON scaling code
  Refactor convolve NEON code
  Refactor convolve code

--- a/test/vp9_scale_test.cc
+++ b/test/vp9_scale_test.cc
@@ -78,7 +78,16 @@
                     src_width, src_height, dst_width, dst_height));
                 ReferenceScaleFrame(filter_type, phase_scaler);
                 ScaleFrame(filter_type, phase_scaler);
-                PrintDiff();
+                if (memcmp(dst_img_.buffer_alloc, ref_img_.buffer_alloc,
+                           ref_img_.frame_size)) {
+                  printf(
+                      "filter_type = %d, phase_scaler = %d, src_width = %4d, "
+                      "src_height = %4d, dst_width = %4d, dst_height = %4d, "
+                      "scale factor = %d:%d\n",
+                      filter_type, phase_scaler, src_width, src_height,
+                      dst_width, dst_height, sf_down, sf_up);
+                  PrintDiff();
+                }
                 CompareImages(dst_img_);
                 DeallocScaleImages();
               }
@@ -134,8 +143,8 @@
   static const int kCountSpeedTestBlock = 100;
   static const int kNumScaleFactorsToTest = 4;
   static const int kScaleFactors[] = { 1, 2, 3, 4 };
-  const int src_height = 1280;
-  const int src_width = 720;
+  const int src_width = 1280;
+  const int src_height = 720;
   for (INTERP_FILTER filter_type = 2; filter_type < 4; ++filter_type) {
     for (int phase_scaler = 0; phase_scaler < 2; ++phase_scaler) {
       for (int sf_up_idx = 0; sf_up_idx < kNumScaleFactorsToTest; ++sf_up_idx) {
--- a/vp9/encoder/arm/neon/vp9_frame_scale_neon.c
+++ b/vp9/encoder/arm/neon/vp9_frame_scale_neon.c
@@ -170,25 +170,6 @@
   } while (--y);
 }
 
-static INLINE uint8x8_t scale_filter(const uint8x8_t *const s,
-                                     const int16x8_t filters) {
-  const int16x8_t filter3 = vdupq_lane_s16(vget_low_s16(filters), 3);
-  const int16x8_t filter4 = vdupq_lane_s16(vget_high_s16(filters), 0);
-  int16x8_t ss[8];
-
-  ss[0] = vreinterpretq_s16_u16(vmovl_u8(s[0]));
-  ss[1] = vreinterpretq_s16_u16(vmovl_u8(s[1]));
-  ss[2] = vreinterpretq_s16_u16(vmovl_u8(s[2]));
-  ss[3] = vreinterpretq_s16_u16(vmovl_u8(s[3]));
-  ss[4] = vreinterpretq_s16_u16(vmovl_u8(s[4]));
-  ss[5] = vreinterpretq_s16_u16(vmovl_u8(s[5]));
-  ss[6] = vreinterpretq_s16_u16(vmovl_u8(s[6]));
-  ss[7] = vreinterpretq_s16_u16(vmovl_u8(s[7]));
-
-  return convolve8_8(ss[0], ss[1], ss[2], ss[3], ss[4], ss[5], ss[6], ss[7],
-                     filters, filter3, filter4);
-}
-
 static void scale_plane_2_to_1_general_neon(const uint8_t *src,
                                             const int src_stride, uint8_t *dst,
                                             const int dst_stride, const int w,
@@ -195,12 +176,12 @@
                                             const int h,
                                             const int16_t *const coef,
                                             uint8_t *const temp_buffer) {
-  const int max_width_hor = (w + 3) & ~3;
-  const int max_width_ver = (w + 7) & ~7;
-  const int max_height_hor = (2 * h + SUBPEL_TAPS - 2 + 7) & ~7;
-  const int max_height_ver = (h + 3) & ~3;
+  const int width_hor = (w + 3) & ~3;
+  const int width_ver = (w + 7) & ~7;
+  const int height_hor = (2 * h + SUBPEL_TAPS - 2 + 7) & ~7;
+  const int height_ver = (h + 3) & ~3;
   const int16x8_t filters = vld1q_s16(coef);
-  int x, y = max_height_hor;
+  int x, y = height_hor;
   uint8_t *t = temp_buffer;
   uint8x8_t s[14], d[4];
 
@@ -208,7 +189,7 @@
 
   src -= (SUBPEL_TAPS / 2 - 1) * src_stride + SUBPEL_TAPS / 2 + 1;
 
-  // horizontal
+  // horizontal 4x8
   // Note: processing 4x8 is about 20% faster than processing row by row using
   // vld4_u8().
   do {
@@ -215,7 +196,7 @@
     load_u8_8x8(src + 2, src_stride, &s[0], &s[1], &s[2], &s[3], &s[4], &s[5],
                 &s[6], &s[7]);
     transpose_u8_8x8(&s[0], &s[1], &s[2], &s[3], &s[4], &s[5], &s[6], &s[7]);
-    x = max_width_hor;
+    x = width_hor;
 
     do {
       src += 8;
@@ -224,31 +205,31 @@
       transpose_u8_8x8(&s[6], &s[7], &s[8], &s[9], &s[10], &s[11], &s[12],
                        &s[13]);
 
-      d[0] = scale_filter(&s[0], filters);  // 00 10 20 30 40 50 60 70
-      d[1] = scale_filter(&s[2], filters);  // 01 11 21 31 41 51 61 71
-      d[2] = scale_filter(&s[4], filters);  // 02 12 22 32 42 52 62 72
-      d[3] = scale_filter(&s[6], filters);  // 03 13 23 33 43 53 63 73
+      d[0] = scale_filter_8(&s[0], filters);  // 00 10 20 30 40 50 60 70
+      d[1] = scale_filter_8(&s[2], filters);  // 01 11 21 31 41 51 61 71
+      d[2] = scale_filter_8(&s[4], filters);  // 02 12 22 32 42 52 62 72
+      d[3] = scale_filter_8(&s[6], filters);  // 03 13 23 33 43 53 63 73
       // 00 01 02 03 40 41 42 43
       // 10 11 12 13 50 51 52 53
       // 20 21 22 23 60 61 62 63
       // 30 31 32 33 70 71 72 73
       transpose_u8_8x4(&d[0], &d[1], &d[2], &d[3]);
-      vst1_lane_u32((uint32_t *)(t + 0 * max_width_hor),
-                    vreinterpret_u32_u8(d[0]), 0);
-      vst1_lane_u32((uint32_t *)(t + 1 * max_width_hor),
-                    vreinterpret_u32_u8(d[1]), 0);
-      vst1_lane_u32((uint32_t *)(t + 2 * max_width_hor),
-                    vreinterpret_u32_u8(d[2]), 0);
-      vst1_lane_u32((uint32_t *)(t + 3 * max_width_hor),
-                    vreinterpret_u32_u8(d[3]), 0);
-      vst1_lane_u32((uint32_t *)(t + 4 * max_width_hor),
-                    vreinterpret_u32_u8(d[0]), 1);
-      vst1_lane_u32((uint32_t *)(t + 5 * max_width_hor),
-                    vreinterpret_u32_u8(d[1]), 1);
-      vst1_lane_u32((uint32_t *)(t + 6 * max_width_hor),
-                    vreinterpret_u32_u8(d[2]), 1);
-      vst1_lane_u32((uint32_t *)(t + 7 * max_width_hor),
-                    vreinterpret_u32_u8(d[3]), 1);
+      vst1_lane_u32((uint32_t *)(t + 0 * width_hor), vreinterpret_u32_u8(d[0]),
+                    0);
+      vst1_lane_u32((uint32_t *)(t + 1 * width_hor), vreinterpret_u32_u8(d[1]),
+                    0);
+      vst1_lane_u32((uint32_t *)(t + 2 * width_hor), vreinterpret_u32_u8(d[2]),
+                    0);
+      vst1_lane_u32((uint32_t *)(t + 3 * width_hor), vreinterpret_u32_u8(d[3]),
+                    0);
+      vst1_lane_u32((uint32_t *)(t + 4 * width_hor), vreinterpret_u32_u8(d[0]),
+                    1);
+      vst1_lane_u32((uint32_t *)(t + 5 * width_hor), vreinterpret_u32_u8(d[1]),
+                    1);
+      vst1_lane_u32((uint32_t *)(t + 6 * width_hor), vreinterpret_u32_u8(d[2]),
+                    1);
+      vst1_lane_u32((uint32_t *)(t + 7 * width_hor), vreinterpret_u32_u8(d[3]),
+                    1);
 
       s[0] = s[8];
       s[1] = s[9];
@@ -260,29 +241,29 @@
       t += 4;
       x -= 4;
     } while (x);
-    src += 8 * src_stride - 2 * max_width_hor;
-    t += 7 * max_width_hor;
+    src += 8 * src_stride - 2 * width_hor;
+    t += 7 * width_hor;
     y -= 8;
   } while (y);
 
-  // vertical
-  x = max_width_ver;
+  // vertical 8x4
+  x = width_ver;
   t = temp_buffer;
   do {
-    load_u8_8x8(t, max_width_hor, &s[0], &s[1], &s[2], &s[3], &s[4], &s[5],
-                &s[6], &s[7]);
-    t += 6 * max_width_hor;
-    y = max_height_ver;
+    load_u8_8x8(t, width_hor, &s[0], &s[1], &s[2], &s[3], &s[4], &s[5], &s[6],
+                &s[7]);
+    t += 6 * width_hor;
+    y = height_ver;
 
     do {
-      load_u8_8x8(t, max_width_hor, &s[6], &s[7], &s[8], &s[9], &s[10], &s[11],
+      load_u8_8x8(t, width_hor, &s[6], &s[7], &s[8], &s[9], &s[10], &s[11],
                   &s[12], &s[13]);
-      t += 8 * max_width_hor;
+      t += 8 * width_hor;
 
-      d[0] = scale_filter(&s[0], filters);
-      d[1] = scale_filter(&s[2], filters);
-      d[2] = scale_filter(&s[4], filters);
-      d[3] = scale_filter(&s[6], filters);
+      d[0] = scale_filter_8(&s[0], filters);
+      d[1] = scale_filter_8(&s[2], filters);
+      d[2] = scale_filter_8(&s[4], filters);
+      d[3] = scale_filter_8(&s[6], filters);
       vst1_u8(dst + 0 * dst_stride, d[0]);
       vst1_u8(dst + 1 * dst_stride, d[1]);
       vst1_u8(dst + 2 * dst_stride, d[2]);
@@ -298,9 +279,9 @@
       dst += 4 * dst_stride;
       y -= 4;
     } while (y);
-    t -= max_width_hor * (2 * max_height_ver + 6);
+    t -= width_hor * (2 * height_ver + 6);
     t += 8;
-    dst -= max_height_ver * dst_stride;
+    dst -= height_ver * dst_stride;
     dst += 8;
     x -= 8;
   } while (x);
@@ -312,12 +293,12 @@
                                             const int h,
                                             const int16_t *const coef,
                                             uint8_t *const temp_buffer) {
-  const int max_width_hor = (w + 1) & ~1;
-  const int max_width_ver = (w + 7) & ~7;
-  const int max_height_hor = (4 * h + SUBPEL_TAPS - 2 + 7) & ~7;
-  const int max_height_ver = (h + 1) & ~1;
+  const int width_hor = (w + 1) & ~1;
+  const int width_ver = (w + 7) & ~7;
+  const int height_hor = (4 * h + SUBPEL_TAPS - 2 + 7) & ~7;
+  const int height_ver = (h + 1) & ~1;
   const int16x8_t filters = vld1q_s16(coef);
-  int x, y = max_height_hor;
+  int x, y = height_hor;
   uint8_t *t = temp_buffer;
   uint8x8_t s[12], d[2];
 
@@ -325,7 +306,7 @@
 
   src -= (SUBPEL_TAPS / 2 - 1) * src_stride + SUBPEL_TAPS / 2 + 3;
 
-  // horizontal
+  // horizontal 2x8
   // Note: processing 2x8 is about 20% faster than processing row by row using
   // vld4_u8().
   do {
@@ -332,7 +313,7 @@
     load_u8_8x8(src + 4, src_stride, &s[0], &s[1], &s[2], &s[3], &s[4], &s[5],
                 &s[6], &s[7]);
     transpose_u8_4x8(&s[0], &s[1], &s[2], &s[3], s[4], s[5], s[6], s[7]);
-    x = max_width_hor;
+    x = width_hor;
 
     do {
       uint8x8x2_t dd;
@@ -342,26 +323,26 @@
       transpose_u8_8x8(&s[4], &s[5], &s[6], &s[7], &s[8], &s[9], &s[10],
                        &s[11]);
 
-      d[0] = scale_filter(&s[0], filters);  // 00 10 20 30 40 50 60 70
-      d[1] = scale_filter(&s[4], filters);  // 01 11 21 31 41 51 61 71
+      d[0] = scale_filter_8(&s[0], filters);  // 00 10 20 30 40 50 60 70
+      d[1] = scale_filter_8(&s[4], filters);  // 01 11 21 31 41 51 61 71
       // dd.val[0]: 00 01 20 21 40 41 60 61
       // dd.val[1]: 10 11 30 31 50 51 70 71
       dd = vtrn_u8(d[0], d[1]);
-      vst1_lane_u16((uint16_t *)(t + 0 * max_width_hor),
+      vst1_lane_u16((uint16_t *)(t + 0 * width_hor),
                     vreinterpret_u16_u8(dd.val[0]), 0);
-      vst1_lane_u16((uint16_t *)(t + 1 * max_width_hor),
+      vst1_lane_u16((uint16_t *)(t + 1 * width_hor),
                     vreinterpret_u16_u8(dd.val[1]), 0);
-      vst1_lane_u16((uint16_t *)(t + 2 * max_width_hor),
+      vst1_lane_u16((uint16_t *)(t + 2 * width_hor),
                     vreinterpret_u16_u8(dd.val[0]), 1);
-      vst1_lane_u16((uint16_t *)(t + 3 * max_width_hor),
+      vst1_lane_u16((uint16_t *)(t + 3 * width_hor),
                     vreinterpret_u16_u8(dd.val[1]), 1);
-      vst1_lane_u16((uint16_t *)(t + 4 * max_width_hor),
+      vst1_lane_u16((uint16_t *)(t + 4 * width_hor),
                     vreinterpret_u16_u8(dd.val[0]), 2);
-      vst1_lane_u16((uint16_t *)(t + 5 * max_width_hor),
+      vst1_lane_u16((uint16_t *)(t + 5 * width_hor),
                     vreinterpret_u16_u8(dd.val[1]), 2);
-      vst1_lane_u16((uint16_t *)(t + 6 * max_width_hor),
+      vst1_lane_u16((uint16_t *)(t + 6 * width_hor),
                     vreinterpret_u16_u8(dd.val[0]), 3);
-      vst1_lane_u16((uint16_t *)(t + 7 * max_width_hor),
+      vst1_lane_u16((uint16_t *)(t + 7 * width_hor),
                     vreinterpret_u16_u8(dd.val[1]), 3);
 
       s[0] = s[8];
@@ -372,26 +353,26 @@
       t += 2;
       x -= 2;
     } while (x);
-    src += 8 * src_stride - 4 * max_width_hor;
-    t += 7 * max_width_hor;
+    src += 8 * src_stride - 4 * width_hor;
+    t += 7 * width_hor;
     y -= 8;
   } while (y);
 
-  // vertical
-  x = max_width_ver;
+  // vertical 8x2
+  x = width_ver;
   t = temp_buffer;
   do {
-    load_u8_8x4(t, max_width_hor, &s[0], &s[1], &s[2], &s[3]);
-    t += 4 * max_width_hor;
-    y = max_height_ver;
+    load_u8_8x4(t, width_hor, &s[0], &s[1], &s[2], &s[3]);
+    t += 4 * width_hor;
+    y = height_ver;
 
     do {
-      load_u8_8x8(t, max_width_hor, &s[4], &s[5], &s[6], &s[7], &s[8], &s[9],
+      load_u8_8x8(t, width_hor, &s[4], &s[5], &s[6], &s[7], &s[8], &s[9],
                   &s[10], &s[11]);
-      t += 8 * max_width_hor;
+      t += 8 * width_hor;
 
-      d[0] = scale_filter(&s[0], filters);
-      d[1] = scale_filter(&s[4], filters);
+      d[0] = scale_filter_8(&s[0], filters);
+      d[1] = scale_filter_8(&s[4], filters);
       vst1_u8(dst + 0 * dst_stride, d[0]);
       vst1_u8(dst + 1 * dst_stride, d[1]);
 
@@ -403,9 +384,9 @@
       dst += 2 * dst_stride;
       y -= 2;
     } while (y);
-    t -= max_width_hor * (4 * max_height_ver + 4);
+    t -= width_hor * (4 * height_ver + 4);
     t += 8;
-    dst -= max_height_ver * dst_stride;
+    dst -= height_ver * dst_stride;
     dst += 8;
     x -= 8;
   } while (x);
@@ -423,7 +404,11 @@
   const int dst_uv_h = dst_h / 2;
   int scaled = 0;
 
+  // phase_scaler is usually 0 or 8.
+  assert(phase_scaler >= 0 && phase_scaler < 16);
+
   if (2 * dst_w == src_w && 2 * dst_h == src_h) {
+    // 2 to 1
     scaled = 1;
     if (phase_scaler == 0) {
       scale_plane_2_to_1_phase_0_neon(src->y_buffer, src->y_stride,
@@ -448,10 +433,10 @@
           src->v_buffer, src->uv_stride, dst->v_buffer, dst->uv_stride,
           dst_uv_w, dst_uv_h, c0, c1);
     } else {
-      const int buffer_max_width = (dst_w + 3) & ~3;
-      const int buffer_max_height = (2 * dst_h + SUBPEL_TAPS - 2 + 7) & ~7;
+      const int buffer_stride = (dst_w + 3) & ~3;
+      const int buffer_height = (2 * dst_h + SUBPEL_TAPS - 2 + 7) & ~7;
       uint8_t *const temp_buffer =
-          (uint8_t *)malloc(buffer_max_width * buffer_max_height);
+          (uint8_t *)malloc(buffer_stride * buffer_height);
       if (temp_buffer) {
         scale_plane_2_to_1_general_neon(
             src->y_buffer, src->y_stride, dst->y_buffer, dst->y_stride, dst_w,
@@ -470,6 +455,7 @@
       }
     }
   } else if (4 * dst_w == src_w && 4 * dst_h == src_h) {
+    // 4 to 1
     scaled = 1;
     if (phase_scaler == 0) {
       scale_plane_4_to_1_phase_0_neon(src->y_buffer, src->y_stride,
@@ -494,10 +480,10 @@
           src->v_buffer, src->uv_stride, dst->v_buffer, dst->uv_stride,
           dst_uv_w, dst_uv_h, c0, c1);
     } else {
-      const int buffer_max_width = (dst_w + 1) & ~1;
-      const int buffer_max_height = (4 * dst_h + SUBPEL_TAPS - 2 + 7) & ~7;
+      const int buffer_stride = (dst_w + 1) & ~1;
+      const int buffer_height = (4 * dst_h + SUBPEL_TAPS - 2 + 7) & ~7;
       uint8_t *const temp_buffer =
-          (uint8_t *)malloc(buffer_max_width * buffer_max_height);
+          (uint8_t *)malloc(buffer_stride * buffer_height);
       if (temp_buffer) {
         scale_plane_4_to_1_general_neon(
             src->y_buffer, src->y_stride, dst->y_buffer, dst->y_stride, dst_w,
@@ -520,6 +506,7 @@
   if (scaled) {
     vpx_extend_frame_borders(dst);
   } else {
+    // Call c version for all other scaling ratios.
     vp9_scale_and_extend_frame_c(src, dst, filter_type, phase_scaler);
   }
 }
--- a/vpx_dsp/arm/highbd_vpx_convolve8_neon.c
+++ b/vpx_dsp/arm/highbd_vpx_convolve8_neon.c
@@ -85,11 +85,10 @@
   vst1q_u16(s, s7);
 }
 
-static INLINE int32x4_t convolve8_4(const int16x4_t s0, const int16x4_t s1,
-                                    const int16x4_t s2, const int16x4_t s3,
-                                    const int16x4_t s4, const int16x4_t s5,
-                                    const int16x4_t s6, const int16x4_t s7,
-                                    const int16x8_t filters) {
+static INLINE int32x4_t highbd_convolve8_4(
+    const int16x4_t s0, const int16x4_t s1, const int16x4_t s2,
+    const int16x4_t s3, const int16x4_t s4, const int16x4_t s5,
+    const int16x4_t s6, const int16x4_t s7, const int16x8_t filters) {
   const int16x4_t filters_lo = vget_low_s16(filters);
   const int16x4_t filters_hi = vget_high_s16(filters);
   int32x4_t sum;
@@ -105,12 +104,11 @@
   return sum;
 }
 
-static INLINE uint16x8_t convolve8_8(const int16x8_t s0, const int16x8_t s1,
-                                     const int16x8_t s2, const int16x8_t s3,
-                                     const int16x8_t s4, const int16x8_t s5,
-                                     const int16x8_t s6, const int16x8_t s7,
-                                     const int16x8_t filters,
-                                     const uint16x8_t max) {
+static INLINE uint16x8_t
+highbd_convolve8_8(const int16x8_t s0, const int16x8_t s1, const int16x8_t s2,
+                   const int16x8_t s3, const int16x8_t s4, const int16x8_t s5,
+                   const int16x8_t s6, const int16x8_t s7,
+                   const int16x8_t filters, const uint16x8_t max) {
   const int16x4_t filters_lo = vget_low_s16(filters);
   const int16x4_t filters_hi = vget_high_s16(filters);
   int32x4_t sum0, sum1;
@@ -183,10 +181,10 @@
         load_4x4((const int16_t *)src, src_stride, &s7, &s8, &s9, &s10);
         transpose_s16_4x4d(&s7, &s8, &s9, &s10);
 
-        d0 = convolve8_4(s0, s1, s2, s3, s4, s5, s6, s7, filters);
-        d1 = convolve8_4(s1, s2, s3, s4, s5, s6, s7, s8, filters);
-        d2 = convolve8_4(s2, s3, s4, s5, s6, s7, s8, s9, filters);
-        d3 = convolve8_4(s3, s4, s5, s6, s7, s8, s9, s10, filters);
+        d0 = highbd_convolve8_4(s0, s1, s2, s3, s4, s5, s6, s7, filters);
+        d1 = highbd_convolve8_4(s1, s2, s3, s4, s5, s6, s7, s8, filters);
+        d2 = highbd_convolve8_4(s2, s3, s4, s5, s6, s7, s8, s9, filters);
+        d3 = highbd_convolve8_4(s3, s4, s5, s6, s7, s8, s9, s10, filters);
 
         d01 = vcombine_u16(vqrshrun_n_s32(d0, 7), vqrshrun_n_s32(d1, 7));
         d23 = vcombine_u16(vqrshrun_n_s32(d2, 7), vqrshrun_n_s32(d3, 7));
@@ -242,10 +240,11 @@
           __builtin_prefetch(src + 5 * src_stride);
           __builtin_prefetch(src + 6 * src_stride);
           __builtin_prefetch(src + 7 * src_stride);
-          d0 = convolve8_8(s0, s1, s2, s3, s4, s5, s6, s7, filters, max);
-          d1 = convolve8_8(s1, s2, s3, s4, s5, s6, s7, s8, filters, max);
-          d2 = convolve8_8(s2, s3, s4, s5, s6, s7, s8, s9, filters, max);
-          d3 = convolve8_8(s3, s4, s5, s6, s7, s8, s9, s10, filters, max);
+          d0 = highbd_convolve8_8(s0, s1, s2, s3, s4, s5, s6, s7, filters, max);
+          d1 = highbd_convolve8_8(s1, s2, s3, s4, s5, s6, s7, s8, filters, max);
+          d2 = highbd_convolve8_8(s2, s3, s4, s5, s6, s7, s8, s9, filters, max);
+          d3 =
+              highbd_convolve8_8(s3, s4, s5, s6, s7, s8, s9, s10, filters, max);
 
           transpose_u16_8x4(&d0, &d1, &d2, &d3);
           vst1_u16(dst, vget_low_u16(d0));
@@ -303,14 +302,22 @@
                      &s12, &s13, &s14);
             transpose_s16_8x8(&s7, &s8, &s9, &s10, &s11, &s12, &s13, &s14);
 
-            d0 = convolve8_8(s0, s1, s2, s3, s4, s5, s6, s7, filters, max);
-            d1 = convolve8_8(s1, s2, s3, s4, s5, s6, s7, s8, filters, max);
-            d2 = convolve8_8(s2, s3, s4, s5, s6, s7, s8, s9, filters, max);
-            d3 = convolve8_8(s3, s4, s5, s6, s7, s8, s9, s10, filters, max);
-            d4 = convolve8_8(s4, s5, s6, s7, s8, s9, s10, s11, filters, max);
-            d5 = convolve8_8(s5, s6, s7, s8, s9, s10, s11, s12, filters, max);
-            d6 = convolve8_8(s6, s7, s8, s9, s10, s11, s12, s13, filters, max);
-            d7 = convolve8_8(s7, s8, s9, s10, s11, s12, s13, s14, filters, max);
+            d0 = highbd_convolve8_8(s0, s1, s2, s3, s4, s5, s6, s7, filters,
+                                    max);
+            d1 = highbd_convolve8_8(s1, s2, s3, s4, s5, s6, s7, s8, filters,
+                                    max);
+            d2 = highbd_convolve8_8(s2, s3, s4, s5, s6, s7, s8, s9, filters,
+                                    max);
+            d3 = highbd_convolve8_8(s3, s4, s5, s6, s7, s8, s9, s10, filters,
+                                    max);
+            d4 = highbd_convolve8_8(s4, s5, s6, s7, s8, s9, s10, s11, filters,
+                                    max);
+            d5 = highbd_convolve8_8(s5, s6, s7, s8, s9, s10, s11, s12, filters,
+                                    max);
+            d6 = highbd_convolve8_8(s6, s7, s8, s9, s10, s11, s12, s13, filters,
+                                    max);
+            d7 = highbd_convolve8_8(s7, s8, s9, s10, s11, s12, s13, s14,
+                                    filters, max);
 
             transpose_u16_8x8(&d0, &d1, &d2, &d3, &d4, &d5, &d6, &d7);
             store_8x8(d, dst_stride, d0, d1, d2, d3, d4, d5, d6, d7);
@@ -383,10 +390,10 @@
         load_4x4((const int16_t *)src, src_stride, &s7, &s8, &s9, &s10);
         transpose_s16_4x4d(&s7, &s8, &s9, &s10);
 
-        d0 = convolve8_4(s0, s1, s2, s3, s4, s5, s6, s7, filters);
-        d1 = convolve8_4(s1, s2, s3, s4, s5, s6, s7, s8, filters);
-        d2 = convolve8_4(s2, s3, s4, s5, s6, s7, s8, s9, filters);
-        d3 = convolve8_4(s3, s4, s5, s6, s7, s8, s9, s10, filters);
+        d0 = highbd_convolve8_4(s0, s1, s2, s3, s4, s5, s6, s7, filters);
+        d1 = highbd_convolve8_4(s1, s2, s3, s4, s5, s6, s7, s8, filters);
+        d2 = highbd_convolve8_4(s2, s3, s4, s5, s6, s7, s8, s9, filters);
+        d3 = highbd_convolve8_4(s3, s4, s5, s6, s7, s8, s9, s10, filters);
 
         t01 = vcombine_u16(vqrshrun_n_s32(d0, 7), vqrshrun_n_s32(d1, 7));
         t23 = vcombine_u16(vqrshrun_n_s32(d2, 7), vqrshrun_n_s32(d3, 7));
@@ -449,10 +456,11 @@
           __builtin_prefetch(src + 5 * src_stride);
           __builtin_prefetch(src + 6 * src_stride);
           __builtin_prefetch(src + 7 * src_stride);
-          t0 = convolve8_8(s0, s1, s2, s3, s4, s5, s6, s7, filters, max);
-          t1 = convolve8_8(s1, s2, s3, s4, s5, s6, s7, s8, filters, max);
-          t2 = convolve8_8(s2, s3, s4, s5, s6, s7, s8, s9, filters, max);
-          t3 = convolve8_8(s3, s4, s5, s6, s7, s8, s9, s10, filters, max);
+          t0 = highbd_convolve8_8(s0, s1, s2, s3, s4, s5, s6, s7, filters, max);
+          t1 = highbd_convolve8_8(s1, s2, s3, s4, s5, s6, s7, s8, filters, max);
+          t2 = highbd_convolve8_8(s2, s3, s4, s5, s6, s7, s8, s9, filters, max);
+          t3 =
+              highbd_convolve8_8(s3, s4, s5, s6, s7, s8, s9, s10, filters, max);
           transpose_u16_8x4(&t0, &t1, &t2, &t3);
 
           d0 = vcombine_u16(vld1_u16(dst + 0 * dst_stride),
@@ -523,14 +531,22 @@
                      &s12, &s13, &s14);
             transpose_s16_8x8(&s7, &s8, &s9, &s10, &s11, &s12, &s13, &s14);
 
-            d0 = convolve8_8(s0, s1, s2, s3, s4, s5, s6, s7, filters, max);
-            d1 = convolve8_8(s1, s2, s3, s4, s5, s6, s7, s8, filters, max);
-            d2 = convolve8_8(s2, s3, s4, s5, s6, s7, s8, s9, filters, max);
-            d3 = convolve8_8(s3, s4, s5, s6, s7, s8, s9, s10, filters, max);
-            d4 = convolve8_8(s4, s5, s6, s7, s8, s9, s10, s11, filters, max);
-            d5 = convolve8_8(s5, s6, s7, s8, s9, s10, s11, s12, filters, max);
-            d6 = convolve8_8(s6, s7, s8, s9, s10, s11, s12, s13, filters, max);
-            d7 = convolve8_8(s7, s8, s9, s10, s11, s12, s13, s14, filters, max);
+            d0 = highbd_convolve8_8(s0, s1, s2, s3, s4, s5, s6, s7, filters,
+                                    max);
+            d1 = highbd_convolve8_8(s1, s2, s3, s4, s5, s6, s7, s8, filters,
+                                    max);
+            d2 = highbd_convolve8_8(s2, s3, s4, s5, s6, s7, s8, s9, filters,
+                                    max);
+            d3 = highbd_convolve8_8(s3, s4, s5, s6, s7, s8, s9, s10, filters,
+                                    max);
+            d4 = highbd_convolve8_8(s4, s5, s6, s7, s8, s9, s10, s11, filters,
+                                    max);
+            d5 = highbd_convolve8_8(s5, s6, s7, s8, s9, s10, s11, s12, filters,
+                                    max);
+            d6 = highbd_convolve8_8(s6, s7, s8, s9, s10, s11, s12, s13, filters,
+                                    max);
+            d7 = highbd_convolve8_8(s7, s8, s9, s10, s11, s12, s13, s14,
+                                    filters, max);
 
             transpose_u16_8x8(&d0, &d1, &d2, &d3, &d4, &d5, &d6, &d7);
 
@@ -620,10 +636,10 @@
         __builtin_prefetch(src + 1 * src_stride);
         __builtin_prefetch(src + 2 * src_stride);
         __builtin_prefetch(src + 3 * src_stride);
-        d0 = convolve8_4(s0, s1, s2, s3, s4, s5, s6, s7, filters);
-        d1 = convolve8_4(s1, s2, s3, s4, s5, s6, s7, s8, filters);
-        d2 = convolve8_4(s2, s3, s4, s5, s6, s7, s8, s9, filters);
-        d3 = convolve8_4(s3, s4, s5, s6, s7, s8, s9, s10, filters);
+        d0 = highbd_convolve8_4(s0, s1, s2, s3, s4, s5, s6, s7, filters);
+        d1 = highbd_convolve8_4(s1, s2, s3, s4, s5, s6, s7, s8, filters);
+        d2 = highbd_convolve8_4(s2, s3, s4, s5, s6, s7, s8, s9, filters);
+        d3 = highbd_convolve8_4(s3, s4, s5, s6, s7, s8, s9, s10, filters);
 
         d01 = vcombine_u16(vqrshrun_n_s32(d0, 7), vqrshrun_n_s32(d1, 7));
         d23 = vcombine_u16(vqrshrun_n_s32(d2, 7), vqrshrun_n_s32(d3, 7));
@@ -698,10 +714,11 @@
           __builtin_prefetch(s + 1 * src_stride);
           __builtin_prefetch(s + 2 * src_stride);
           __builtin_prefetch(s + 3 * src_stride);
-          d0 = convolve8_8(s0, s1, s2, s3, s4, s5, s6, s7, filters, max);
-          d1 = convolve8_8(s1, s2, s3, s4, s5, s6, s7, s8, filters, max);
-          d2 = convolve8_8(s2, s3, s4, s5, s6, s7, s8, s9, filters, max);
-          d3 = convolve8_8(s3, s4, s5, s6, s7, s8, s9, s10, filters, max);
+          d0 = highbd_convolve8_8(s0, s1, s2, s3, s4, s5, s6, s7, filters, max);
+          d1 = highbd_convolve8_8(s1, s2, s3, s4, s5, s6, s7, s8, filters, max);
+          d2 = highbd_convolve8_8(s2, s3, s4, s5, s6, s7, s8, s9, filters, max);
+          d3 =
+              highbd_convolve8_8(s3, s4, s5, s6, s7, s8, s9, s10, filters, max);
 
           vst1q_u16(d, d0);
           d += dst_stride;
@@ -786,10 +803,10 @@
         __builtin_prefetch(src + 1 * src_stride);
         __builtin_prefetch(src + 2 * src_stride);
         __builtin_prefetch(src + 3 * src_stride);
-        d0 = convolve8_4(s0, s1, s2, s3, s4, s5, s6, s7, filters);
-        d1 = convolve8_4(s1, s2, s3, s4, s5, s6, s7, s8, filters);
-        d2 = convolve8_4(s2, s3, s4, s5, s6, s7, s8, s9, filters);
-        d3 = convolve8_4(s3, s4, s5, s6, s7, s8, s9, s10, filters);
+        d0 = highbd_convolve8_4(s0, s1, s2, s3, s4, s5, s6, s7, filters);
+        d1 = highbd_convolve8_4(s1, s2, s3, s4, s5, s6, s7, s8, filters);
+        d2 = highbd_convolve8_4(s2, s3, s4, s5, s6, s7, s8, s9, filters);
+        d3 = highbd_convolve8_4(s3, s4, s5, s6, s7, s8, s9, s10, filters);
 
         t01 = vcombine_u16(vqrshrun_n_s32(d0, 7), vqrshrun_n_s32(d1, 7));
         t23 = vcombine_u16(vqrshrun_n_s32(d2, 7), vqrshrun_n_s32(d3, 7));
@@ -872,10 +889,11 @@
           __builtin_prefetch(s + 1 * src_stride);
           __builtin_prefetch(s + 2 * src_stride);
           __builtin_prefetch(s + 3 * src_stride);
-          t0 = convolve8_8(s0, s1, s2, s3, s4, s5, s6, s7, filters, max);
-          t1 = convolve8_8(s1, s2, s3, s4, s5, s6, s7, s8, filters, max);
-          t2 = convolve8_8(s2, s3, s4, s5, s6, s7, s8, s9, filters, max);
-          t3 = convolve8_8(s3, s4, s5, s6, s7, s8, s9, s10, filters, max);
+          t0 = highbd_convolve8_8(s0, s1, s2, s3, s4, s5, s6, s7, filters, max);
+          t1 = highbd_convolve8_8(s1, s2, s3, s4, s5, s6, s7, s8, filters, max);
+          t2 = highbd_convolve8_8(s2, s3, s4, s5, s6, s7, s8, s9, filters, max);
+          t3 =
+              highbd_convolve8_8(s3, s4, s5, s6, s7, s8, s9, s10, filters, max);
 
           d0 = vld1q_u16(d + 0 * dst_stride);
           d1 = vld1q_u16(d + 1 * dst_stride);
--- a/vpx_dsp/arm/vpx_convolve8_neon.c
+++ b/vpx_dsp/arm/vpx_convolve8_neon.c
@@ -52,28 +52,6 @@
   vst1_u8(s, s7);
 }
 
-static INLINE int16x4_t convolve8_4(const int16x4_t s0, const int16x4_t s1,
-                                    const int16x4_t s2, const int16x4_t s3,
-                                    const int16x4_t s4, const int16x4_t s5,
-                                    const int16x4_t s6, const int16x4_t s7,
-                                    const int16x8_t filters,
-                                    const int16x4_t filter3,
-                                    const int16x4_t filter4) {
-  const int16x4_t filters_lo = vget_low_s16(filters);
-  const int16x4_t filters_hi = vget_high_s16(filters);
-  int16x4_t sum;
-
-  sum = vmul_lane_s16(s0, filters_lo, 0);
-  sum = vmla_lane_s16(sum, s1, filters_lo, 1);
-  sum = vmla_lane_s16(sum, s2, filters_lo, 2);
-  sum = vmla_lane_s16(sum, s5, filters_hi, 1);
-  sum = vmla_lane_s16(sum, s6, filters_hi, 2);
-  sum = vmla_lane_s16(sum, s7, filters_hi, 3);
-  sum = vqadd_s16(sum, vmul_s16(s3, filter3));
-  sum = vqadd_s16(sum, vmul_s16(s4, filter4));
-  return sum;
-}
-
 void vpx_convolve8_horiz_neon(const uint8_t *src, ptrdiff_t src_stride,
                               uint8_t *dst, ptrdiff_t dst_stride,
                               const InterpKernel *filter, int x0_q4,
--- a/vpx_dsp/arm/vpx_convolve8_neon.h
+++ b/vpx_dsp/arm/vpx_convolve8_neon.h
@@ -47,6 +47,28 @@
   *s7 = vld1_u8(s);
 }
 
+static INLINE int16x4_t convolve8_4(const int16x4_t s0, const int16x4_t s1,
+                                    const int16x4_t s2, const int16x4_t s3,
+                                    const int16x4_t s4, const int16x4_t s5,
+                                    const int16x4_t s6, const int16x4_t s7,
+                                    const int16x8_t filters,
+                                    const int16x4_t filter3,
+                                    const int16x4_t filter4) {
+  const int16x4_t filters_lo = vget_low_s16(filters);
+  const int16x4_t filters_hi = vget_high_s16(filters);
+  int16x4_t sum;
+
+  sum = vmul_lane_s16(s0, filters_lo, 0);
+  sum = vmla_lane_s16(sum, s1, filters_lo, 1);
+  sum = vmla_lane_s16(sum, s2, filters_lo, 2);
+  sum = vmla_lane_s16(sum, s5, filters_hi, 1);
+  sum = vmla_lane_s16(sum, s6, filters_hi, 2);
+  sum = vmla_lane_s16(sum, s7, filters_hi, 3);
+  sum = vqadd_s16(sum, vmul_s16(s3, filter3));
+  sum = vqadd_s16(sum, vmul_s16(s4, filter4));
+  return sum;
+}
+
 static INLINE uint8x8_t convolve8_8(const int16x8_t s0, const int16x8_t s1,
                                     const int16x8_t s2, const int16x8_t s3,
                                     const int16x8_t s4, const int16x8_t s5,
@@ -67,4 +89,23 @@
   sum = vqaddq_s16(sum, vmulq_s16(s3, filter3));
   sum = vqaddq_s16(sum, vmulq_s16(s4, filter4));
   return vqrshrun_n_s16(sum, 7);
+}
+
+static INLINE uint8x8_t scale_filter_8(const uint8x8_t *const s,
+                                       const int16x8_t filters) {
+  const int16x8_t filter3 = vdupq_lane_s16(vget_low_s16(filters), 3);
+  const int16x8_t filter4 = vdupq_lane_s16(vget_high_s16(filters), 0);
+  int16x8_t ss[8];
+
+  ss[0] = vreinterpretq_s16_u16(vmovl_u8(s[0]));
+  ss[1] = vreinterpretq_s16_u16(vmovl_u8(s[1]));
+  ss[2] = vreinterpretq_s16_u16(vmovl_u8(s[2]));
+  ss[3] = vreinterpretq_s16_u16(vmovl_u8(s[3]));
+  ss[4] = vreinterpretq_s16_u16(vmovl_u8(s[4]));
+  ss[5] = vreinterpretq_s16_u16(vmovl_u8(s[5]));
+  ss[6] = vreinterpretq_s16_u16(vmovl_u8(s[6]));
+  ss[7] = vreinterpretq_s16_u16(vmovl_u8(s[7]));
+
+  return convolve8_8(ss[0], ss[1], ss[2], ss[3], ss[4], ss[5], ss[6], ss[7],
+                     filters, filter3, filter4);
 }
--- a/vpx_dsp/vpx_convolve.c
+++ b/vpx_dsp/vpx_convolve.c
@@ -113,40 +113,6 @@
   }
 }
 
-static void convolve(const uint8_t *src, ptrdiff_t src_stride, uint8_t *dst,
-                     ptrdiff_t dst_stride, const InterpKernel *filter,
-                     int x0_q4, int x_step_q4, int y0_q4, int y_step_q4, int w,
-                     int h) {
-  // Note: Fixed size intermediate buffer, temp, places limits on parameters.
-  // 2d filtering proceeds in 2 steps:
-  //   (1) Interpolate horizontally into an intermediate buffer, temp.
-  //   (2) Interpolate temp vertically to derive the sub-pixel result.
-  // Deriving the maximum number of rows in the temp buffer (135):
-  // --Smallest scaling factor is x1/2 ==> y_step_q4 = 32 (Normative).
-  // --Largest block size is 64x64 pixels.
-  // --64 rows in the downscaled frame span a distance of (64 - 1) * 32 in the
-  //   original frame (in 1/16th pixel units).
-  // --Must round-up because block may be located at sub-pixel position.
-  // --Require an additional SUBPEL_TAPS rows for the 8-tap filter tails.
-  // --((64 - 1) * 32 + 15) >> 4 + 8 = 135.
-  // When calling in frame scaling function, the smallest scaling factor is x1/4
-  // ==> y_step_q4 = 64. Since w and h are at most 16, the temp buffer is still
-  // big enough.
-  uint8_t temp[64 * 135];
-  const int intermediate_height =
-      (((h - 1) * y_step_q4 + y0_q4) >> SUBPEL_BITS) + SUBPEL_TAPS;
-
-  assert(w <= 64);
-  assert(h <= 64);
-  assert(y_step_q4 <= 32 || (y_step_q4 <= 64 && h <= 32));
-  assert(x_step_q4 <= 64);
-
-  convolve_horiz(src - src_stride * (SUBPEL_TAPS / 2 - 1), src_stride, temp, 64,
-                 filter, x0_q4, x_step_q4, w, intermediate_height);
-  convolve_vert(temp + 64 * (SUBPEL_TAPS / 2 - 1), 64, dst, dst_stride, filter,
-                y0_q4, y_step_q4, w, h);
-}
-
 void vpx_convolve8_horiz_c(const uint8_t *src, ptrdiff_t src_stride,
                            uint8_t *dst, ptrdiff_t dst_stride,
                            const InterpKernel *filter, int x0_q4, int x_step_q4,
@@ -193,8 +159,34 @@
                      ptrdiff_t dst_stride, const InterpKernel *filter,
                      int x0_q4, int x_step_q4, int y0_q4, int y_step_q4, int w,
                      int h) {
-  convolve(src, src_stride, dst, dst_stride, filter, x0_q4, x_step_q4, y0_q4,
-           y_step_q4, w, h);
+  // Note: Fixed size intermediate buffer, temp, places limits on parameters.
+  // 2d filtering proceeds in 2 steps:
+  //   (1) Interpolate horizontally into an intermediate buffer, temp.
+  //   (2) Interpolate temp vertically to derive the sub-pixel result.
+  // Deriving the maximum number of rows in the temp buffer (135):
+  // --Smallest scaling factor is x1/2 ==> y_step_q4 = 32 (Normative).
+  // --Largest block size is 64x64 pixels.
+  // --64 rows in the downscaled frame span a distance of (64 - 1) * 32 in the
+  //   original frame (in 1/16th pixel units).
+  // --Must round-up because block may be located at sub-pixel position.
+  // --Require an additional SUBPEL_TAPS rows for the 8-tap filter tails.
+  // --((64 - 1) * 32 + 15) >> 4 + 8 = 135.
+  // When calling in frame scaling function, the smallest scaling factor is x1/4
+  // ==> y_step_q4 = 64. Since w and h are at most 16, the temp buffer is still
+  // big enough.
+  uint8_t temp[64 * 135];
+  const int intermediate_height =
+      (((h - 1) * y_step_q4 + y0_q4) >> SUBPEL_BITS) + SUBPEL_TAPS;
+
+  assert(w <= 64);
+  assert(h <= 64);
+  assert(y_step_q4 <= 32 || (y_step_q4 <= 64 && h <= 32));
+  assert(x_step_q4 <= 64);
+
+  convolve_horiz(src - src_stride * (SUBPEL_TAPS / 2 - 1), src_stride, temp, 64,
+                 filter, x0_q4, x_step_q4, w, intermediate_height);
+  convolve_vert(temp + 64 * (SUBPEL_TAPS / 2 - 1), 64, dst, dst_stride, filter,
+                y0_q4, y_step_q4, w, h);
 }
 
 void vpx_convolve8_avg_c(const uint8_t *src, ptrdiff_t src_stride, uint8_t *dst,
--- a/vpx_dsp/x86/vpx_subpixel_8t_intrin_ssse3.c
+++ b/vpx_dsp/x86/vpx_subpixel_8t_intrin_ssse3.c
@@ -10,6 +10,8 @@
 
 #include <tmmintrin.h>
 
+#include <string.h>
+
 #include "./vpx_dsp_rtcd.h"
 #include "vpx_dsp/vpx_filter.h"
 #include "vpx_dsp/x86/convolve.h"
@@ -447,7 +449,7 @@
   int x, y, z;
   src -= SUBPEL_TAPS / 2 - 1;
 
-  // This function processes 8x8 areas.  The intermediate height is not always
+  // This function processes 8x8 areas. The intermediate height is not always
   // a multiple of 8, so force it to be a multiple of 8 here.
   y = h + (8 - (h & 0x7));
 
@@ -810,11 +812,10 @@
   }
 }
 
-static void scaledconvolve2d(const uint8_t *src, ptrdiff_t src_stride,
-                             uint8_t *dst, ptrdiff_t dst_stride,
-                             const InterpKernel *const filter, int x0_q4,
-                             int x_step_q4, int y0_q4, int y_step_q4, int w,
-                             int h) {
+void vpx_scaled_2d_ssse3(const uint8_t *src, ptrdiff_t src_stride, uint8_t *dst,
+                         ptrdiff_t dst_stride, const InterpKernel *filter,
+                         int x0_q4, int x_step_q4, int y0_q4, int y_step_q4,
+                         int w, int h) {
   // Note: Fixed size intermediate buffer, temp, places limits on parameters.
   // 2d filtering proceeds in 2 steps:
   //   (1) Interpolate horizontally into an intermediate buffer, temp.
@@ -860,14 +861,6 @@
     scaledconvolve_vert_w4(temp + 64 * (SUBPEL_TAPS / 2 - 1), 64, dst,
                            dst_stride, filter, y0_q4, y_step_q4, w, h);
   }
-}
-
-void vpx_scaled_2d_ssse3(const uint8_t *src, ptrdiff_t src_stride, uint8_t *dst,
-                         ptrdiff_t dst_stride, const InterpKernel *filter,
-                         int x0_q4, int x_step_q4, int y0_q4, int y_step_q4,
-                         int w, int h) {
-  scaledconvolve2d(src, src_stride, dst, dst_stride, filter, x0_q4, x_step_q4,
-                   y0_q4, y_step_q4, w, h);
 }
 
 // void vp9_convolve8_ssse3(const uint8_t *src, ptrdiff_t src_stride,