Remove the av1_get_interp_filter_params() function

We use the av1_get_interp_filter_params_with_block_size() function
introduced by short filter experiment instead.

Note: For motion search, we use 8-tap filter even for small blocks
as before, because that seems to yield slightly better compression than
using a short (4-tap) filter.

This is a cleanup only: no change in output.

Change-Id: Ie92a07b16f01ed3e946e972d0925568a01a1fc63
diff --git a/aom_dsp/variance.c b/aom_dsp/variance.c
index 5b5e02f..71d9290 100644
--- a/aom_dsp/variance.c
+++ b/aom_dsp/variance.c
@@ -8,19 +8,19 @@
  * Media Patent License 1.0 was not distributed with this source code in the
  * PATENTS file, you can obtain it at www.aomedia.org/license/patent.
  */
+#include <assert.h>
 #include <stdlib.h>
 #include <string.h>
-#include <assert.h>
 
 #include "./aom_config.h"
 #include "./aom_dsp_rtcd.h"
 
-#include "aom_ports/mem.h"
 #include "aom/aom_integer.h"
+#include "aom_ports/mem.h"
 
-#include "aom_dsp/variance.h"
 #include "aom_dsp/aom_filter.h"
 #include "aom_dsp/blend.h"
+#include "aom_dsp/variance.h"
 
 #include "./av1_rtcd.h"
 #include "av1/common/filter.h"
@@ -312,29 +312,28 @@
       ref += ref_stride;
     }
   } else {
-    InterpFilterParams filter;
-    filter = av1_get_interp_filter_params(EIGHTTAP_REGULAR);
+    const InterpFilterParams filter =
+        av1_get_interp_filter_params_with_block_size(EIGHTTAP_REGULAR, 8);
     if (!subpel_y_q3) {
-      const int16_t *kernel;
-      kernel = av1_get_interp_filter_subpel_kernel(filter, subpel_x_q3 << 1);
+      const int16_t *kernel =
+          av1_get_interp_filter_subpel_kernel(filter, subpel_x_q3 << 1);
       /*Directly call C version to allow this to work for small (2x2) sizes.*/
       aom_convolve8_horiz_c(ref, ref_stride, comp_pred, width, kernel, 16, NULL,
                             -1, width, height);
     } else if (!subpel_x_q3) {
-      const int16_t *kernel;
-      kernel = av1_get_interp_filter_subpel_kernel(filter, subpel_y_q3 << 1);
+      const int16_t *kernel =
+          av1_get_interp_filter_subpel_kernel(filter, subpel_y_q3 << 1);
       /*Directly call C version to allow this to work for small (2x2) sizes.*/
       aom_convolve8_vert_c(ref, ref_stride, comp_pred, width, NULL, -1, kernel,
                            16, width, height);
     } else {
       DECLARE_ALIGNED(16, uint8_t,
                       temp[((MAX_SB_SIZE * 2 + 16) + 16) * MAX_SB_SIZE]);
-      const int16_t *kernel_x;
-      const int16_t *kernel_y;
-      int intermediate_height;
-      kernel_x = av1_get_interp_filter_subpel_kernel(filter, subpel_x_q3 << 1);
-      kernel_y = av1_get_interp_filter_subpel_kernel(filter, subpel_y_q3 << 1);
-      intermediate_height =
+      const int16_t *kernel_x =
+          av1_get_interp_filter_subpel_kernel(filter, subpel_x_q3 << 1);
+      const int16_t *kernel_y =
+          av1_get_interp_filter_subpel_kernel(filter, subpel_y_q3 << 1);
+      const int intermediate_height =
           (((height - 1) * 8 + subpel_y_q3) >> 3) + filter.taps;
       assert(intermediate_height <= (MAX_SB_SIZE * 2 + 16) + 16);
       /*Directly call C versions to allow this to work for small (2x2) sizes.*/
@@ -824,18 +823,18 @@
       ref += ref_stride;
     }
   } else {
-    InterpFilterParams filter;
-    filter = av1_get_interp_filter_params(EIGHTTAP_REGULAR);
+    const InterpFilterParams filter =
+        av1_get_interp_filter_params_with_block_size(EIGHTTAP_REGULAR, 8);
     if (!subpel_y_q3) {
-      const int16_t *kernel;
-      kernel = av1_get_interp_filter_subpel_kernel(filter, subpel_x_q3 << 1);
+      const int16_t *kernel =
+          av1_get_interp_filter_subpel_kernel(filter, subpel_x_q3 << 1);
       /*Directly call C version to allow this to work for small (2x2) sizes.*/
       aom_highbd_convolve8_horiz_c(ref8, ref_stride,
                                    CONVERT_TO_BYTEPTR(comp_pred), width, kernel,
                                    16, NULL, -1, width, height, bd);
     } else if (!subpel_x_q3) {
-      const int16_t *kernel;
-      kernel = av1_get_interp_filter_subpel_kernel(filter, subpel_y_q3 << 1);
+      const int16_t *kernel =
+          av1_get_interp_filter_subpel_kernel(filter, subpel_y_q3 << 1);
       /*Directly call C version to allow this to work for small (2x2) sizes.*/
       aom_highbd_convolve8_vert_c(ref8, ref_stride,
                                   CONVERT_TO_BYTEPTR(comp_pred), width, NULL,
@@ -843,12 +842,11 @@
     } else {
       DECLARE_ALIGNED(16, uint16_t,
                       temp[((MAX_SB_SIZE + 16) + 16) * MAX_SB_SIZE]);
-      const int16_t *kernel_x;
-      const int16_t *kernel_y;
-      int intermediate_height;
-      kernel_x = av1_get_interp_filter_subpel_kernel(filter, subpel_x_q3 << 1);
-      kernel_y = av1_get_interp_filter_subpel_kernel(filter, subpel_y_q3 << 1);
-      intermediate_height =
+      const int16_t *kernel_x =
+          av1_get_interp_filter_subpel_kernel(filter, subpel_x_q3 << 1);
+      const int16_t *kernel_y =
+          av1_get_interp_filter_subpel_kernel(filter, subpel_y_q3 << 1);
+      const int intermediate_height =
           (((height - 1) * 8 + subpel_y_q3) >> 3) + filter.taps;
       assert(intermediate_height <= (MAX_SB_SIZE * 2 + 16) + 16);
       /*Directly call C versions to allow this to work for small (2x2) sizes.*/
diff --git a/aom_dsp/x86/highbd_variance_sse2.c b/aom_dsp/x86/highbd_variance_sse2.c
index 9e89508..740145d 100644
--- a/aom_dsp/x86/highbd_variance_sse2.c
+++ b/aom_dsp/x86/highbd_variance_sse2.c
@@ -619,28 +619,27 @@
       }
     }
   } else {
-    InterpFilterParams filter;
-    filter = av1_get_interp_filter_params(EIGHTTAP_REGULAR);
+    const InterpFilterParams filter =
+        av1_get_interp_filter_params_with_block_size(EIGHTTAP_REGULAR, 8);
     if (!subpel_y_q3) {
-      const int16_t *kernel;
-      kernel = av1_get_interp_filter_subpel_kernel(filter, subpel_x_q3 << 1);
+      const int16_t *kernel =
+          av1_get_interp_filter_subpel_kernel(filter, subpel_x_q3 << 1);
       aom_highbd_convolve8_horiz(ref8, ref_stride,
                                  CONVERT_TO_BYTEPTR(comp_pred), width, kernel,
                                  16, NULL, -1, width, height, bd);
     } else if (!subpel_x_q3) {
-      const int16_t *kernel;
-      kernel = av1_get_interp_filter_subpel_kernel(filter, subpel_y_q3 << 1);
+      const int16_t *kernel =
+          av1_get_interp_filter_subpel_kernel(filter, subpel_y_q3 << 1);
       aom_highbd_convolve8_vert(ref8, ref_stride, CONVERT_TO_BYTEPTR(comp_pred),
                                 width, NULL, -1, kernel, 16, width, height, bd);
     } else {
       DECLARE_ALIGNED(16, uint16_t,
                       temp[((MAX_SB_SIZE + 16) + 16) * MAX_SB_SIZE]);
-      const int16_t *kernel_x;
-      const int16_t *kernel_y;
-      int intermediate_height;
-      kernel_x = av1_get_interp_filter_subpel_kernel(filter, subpel_x_q3 << 1);
-      kernel_y = av1_get_interp_filter_subpel_kernel(filter, subpel_y_q3 << 1);
-      intermediate_height =
+      const int16_t *kernel_x =
+          av1_get_interp_filter_subpel_kernel(filter, subpel_x_q3 << 1);
+      const int16_t *kernel_y =
+          av1_get_interp_filter_subpel_kernel(filter, subpel_y_q3 << 1);
+      const int intermediate_height =
           (((height - 1) * 8 + subpel_y_q3) >> 3) + filter.taps;
       assert(intermediate_height <= (MAX_SB_SIZE * 2 + 16) + 16);
       aom_highbd_convolve8_horiz(ref8 - ref_stride * ((filter.taps >> 1) - 1),
diff --git a/aom_dsp/x86/variance_sse2.c b/aom_dsp/x86/variance_sse2.c
index ad9deb5..a6ac66b 100644
--- a/aom_dsp/x86/variance_sse2.c
+++ b/aom_dsp/x86/variance_sse2.c
@@ -565,27 +565,26 @@
       }
     }
   } else {
-    InterpFilterParams filter;
-    filter = av1_get_interp_filter_params(EIGHTTAP_REGULAR);
+    const InterpFilterParams filter =
+        av1_get_interp_filter_params_with_block_size(EIGHTTAP_REGULAR, 8);
     if (!subpel_y_q3) {
-      const int16_t *kernel;
-      kernel = av1_get_interp_filter_subpel_kernel(filter, subpel_x_q3 << 1);
+      const int16_t *kernel =
+          av1_get_interp_filter_subpel_kernel(filter, subpel_x_q3 << 1);
       aom_convolve8_horiz(ref, ref_stride, comp_pred, width, kernel, 16, NULL,
                           -1, width, height);
     } else if (!subpel_x_q3) {
-      const int16_t *kernel;
-      kernel = av1_get_interp_filter_subpel_kernel(filter, subpel_y_q3 << 1);
+      const int16_t *kernel =
+          av1_get_interp_filter_subpel_kernel(filter, subpel_y_q3 << 1);
       aom_convolve8_vert(ref, ref_stride, comp_pred, width, NULL, -1, kernel,
                          16, width, height);
     } else {
       DECLARE_ALIGNED(16, uint8_t,
                       temp[((MAX_SB_SIZE * 2 + 16) + 16) * MAX_SB_SIZE]);
-      const int16_t *kernel_x;
-      const int16_t *kernel_y;
-      int intermediate_height;
-      kernel_x = av1_get_interp_filter_subpel_kernel(filter, subpel_x_q3 << 1);
-      kernel_y = av1_get_interp_filter_subpel_kernel(filter, subpel_y_q3 << 1);
-      intermediate_height =
+      const int16_t *kernel_x =
+          av1_get_interp_filter_subpel_kernel(filter, subpel_x_q3 << 1);
+      const int16_t *kernel_y =
+          av1_get_interp_filter_subpel_kernel(filter, subpel_y_q3 << 1);
+      const int intermediate_height =
           (((height - 1) * 8 + subpel_y_q3) >> 3) + filter.taps;
       assert(intermediate_height <= (MAX_SB_SIZE * 2 + 16) + 16);
       aom_convolve8_horiz(ref - ref_stride * ((filter.taps >> 1) - 1),
diff --git a/av1/common/filter.c b/av1/common/filter.c
index dbb51e8..a7e67ea 100644
--- a/av1/common/filter.c
+++ b/av1/common/filter.c
@@ -103,11 +103,6 @@
     EIGHTTAP_SMOOTH },
 };
 
-InterpFilterParams av1_get_interp_filter_params(
-    const InterpFilter interp_filter) {
-  return av1_interp_filter_params_list[interp_filter];
-}
-
 InterpFilterParams av1_get_interp_filter_params_with_block_size(
     const InterpFilter interp_filter, const int w) {
   if (w <= 4 &&
diff --git a/av1/common/filter.h b/av1/common/filter.h
index 661ad8e..7a2d687 100644
--- a/av1/common/filter.h
+++ b/av1/common/filter.h
@@ -91,12 +91,6 @@
   return filter_params.filter_ptr + filter_params.taps * subpel;
 }
 
-static INLINE int av1_is_interpolating_filter(
-    const InterpFilter interp_filter) {
-  const InterpFilterParams ip = av1_get_interp_filter_params(interp_filter);
-  return (ip.filter_ptr[ip.taps / 2 - 1] == 128);
-}
-
 #ifdef __cplusplus
 }  // extern "C"
 #endif
diff --git a/test/av1_convolve_2d_test_util.cc b/test/av1_convolve_2d_test_util.cc
index 1c65941..84656b2 100644
--- a/test/av1_convolve_2d_test_util.cc
+++ b/test/av1_convolve_2d_test_util.cc
@@ -64,9 +64,11 @@
       for (vfilter = EIGHTTAP_REGULAR; vfilter < INTERP_FILTERS_ALL;
            ++vfilter) {
         InterpFilterParams filter_params_x =
-            av1_get_interp_filter_params((InterpFilter)hfilter);
+            av1_get_interp_filter_params_with_block_size((InterpFilter)hfilter,
+                                                         out_w);
         InterpFilterParams filter_params_y =
-            av1_get_interp_filter_params((InterpFilter)vfilter);
+            av1_get_interp_filter_params_with_block_size((InterpFilter)vfilter,
+                                                         out_h);
         for (int do_average = 0; do_average < 1; ++do_average) {
           ConvolveParams conv_params1 =
               get_conv_params_no_round(0, do_average, 0, NULL, 0, 0, 8);
@@ -122,10 +124,6 @@
   int hfilter = EIGHTTAP_REGULAR, vfilter = EIGHTTAP_REGULAR;
   int subx = 0, suby = 0;
 
-  InterpFilterParams filter_params_x =
-      av1_get_interp_filter_params((InterpFilter)hfilter);
-  InterpFilterParams filter_params_y =
-      av1_get_interp_filter_params((InterpFilter)vfilter);
   const int do_average = 0;
   ConvolveParams conv_params2 =
       get_conv_params_no_round(0, do_average, 0, NULL, 0, 0, 8);
@@ -138,6 +136,14 @@
     const int out_w = block_size_wide[block_idx] >> shift;
     const int out_h = block_size_high[block_idx] >> shift;
     const int num_loops = 1000000000 / (out_w + out_h);
+
+    InterpFilterParams filter_params_x =
+        av1_get_interp_filter_params_with_block_size((InterpFilter)hfilter,
+                                                     out_w);
+    InterpFilterParams filter_params_y =
+        av1_get_interp_filter_params_with_block_size((InterpFilter)vfilter,
+                                                     out_h);
+
     aom_usec_timer timer;
     aom_usec_timer_start(&timer);
 
@@ -183,9 +189,11 @@
   for (hfilter = EIGHTTAP_REGULAR; hfilter < INTERP_FILTERS_ALL; ++hfilter) {
     for (vfilter = EIGHTTAP_REGULAR; vfilter < INTERP_FILTERS_ALL; ++vfilter) {
       InterpFilterParams filter_params_x =
-          av1_get_interp_filter_params((InterpFilter)hfilter);
+          av1_get_interp_filter_params_with_block_size((InterpFilter)hfilter,
+                                                       out_w);
       InterpFilterParams filter_params_y =
-          av1_get_interp_filter_params((InterpFilter)vfilter);
+          av1_get_interp_filter_params_with_block_size((InterpFilter)vfilter,
+                                                       out_h);
       for (int do_average = 0; do_average <= 1; ++do_average) {
         ConvolveParams conv_params1 = get_conv_params_no_round(
             0, do_average, 0, output1, MAX_SB_SIZE, 1, 8);
@@ -333,11 +341,6 @@
   subx = 0;
   suby = 0;
 
-  InterpFilterParams filter_params_x =
-      av1_get_interp_filter_params((InterpFilter)hfilter);
-  InterpFilterParams filter_params_y =
-      av1_get_interp_filter_params((InterpFilter)vfilter);
-
   ConvolveParams conv_params =
       get_conv_params_no_round(0, do_average, 0, NULL, 0, 0, bd);
 
@@ -351,6 +354,13 @@
     const int out_h = block_size_high[block_idx] >> shift;
     const int num_loops = 1000000000 / (out_w + out_h);
 
+    InterpFilterParams filter_params_x =
+        av1_get_interp_filter_params_with_block_size((InterpFilter)hfilter,
+                                                     out_w);
+    InterpFilterParams filter_params_y =
+        av1_get_interp_filter_params_with_block_size((InterpFilter)vfilter,
+                                                     out_h);
+
     aom_usec_timer timer;
     aom_usec_timer_start(&timer);
     for (int i = 0; i < num_loops; ++i)
@@ -394,9 +404,11 @@
       for (vfilter = EIGHTTAP_REGULAR; vfilter < INTERP_FILTERS_ALL;
            ++vfilter) {
         InterpFilterParams filter_params_x =
-            av1_get_interp_filter_params((InterpFilter)hfilter);
+            av1_get_interp_filter_params_with_block_size((InterpFilter)hfilter,
+                                                         out_w);
         InterpFilterParams filter_params_y =
-            av1_get_interp_filter_params((InterpFilter)vfilter);
+            av1_get_interp_filter_params_with_block_size((InterpFilter)vfilter,
+                                                         out_h);
         for (int do_average = 0; do_average < 1; ++do_average) {
           ConvolveParams conv_params1 =
               get_conv_params_no_round(0, do_average, 0, NULL, 0, 0, bd);
@@ -466,9 +478,11 @@
   const int out_h = block_size_high[block_idx];
 
   InterpFilterParams filter_params_x =
-      av1_get_interp_filter_params((InterpFilter)hfilter);
+      av1_get_interp_filter_params_with_block_size((InterpFilter)hfilter,
+                                                   out_w);
   InterpFilterParams filter_params_y =
-      av1_get_interp_filter_params((InterpFilter)vfilter);
+      av1_get_interp_filter_params_with_block_size((InterpFilter)vfilter,
+                                                   out_h);
 
   ConvolveParams conv_params =
       get_conv_params_no_round(0, do_average, 0, output, MAX_SB_SIZE, 1, bd);
@@ -523,9 +537,11 @@
   for (hfilter = EIGHTTAP_REGULAR; hfilter < INTERP_FILTERS_ALL; ++hfilter) {
     for (vfilter = EIGHTTAP_REGULAR; vfilter < INTERP_FILTERS_ALL; ++vfilter) {
       InterpFilterParams filter_params_x =
-          av1_get_interp_filter_params((InterpFilter)hfilter);
+          av1_get_interp_filter_params_with_block_size((InterpFilter)hfilter,
+                                                       out_w);
       InterpFilterParams filter_params_y =
-          av1_get_interp_filter_params((InterpFilter)vfilter);
+          av1_get_interp_filter_params_with_block_size((InterpFilter)vfilter,
+                                                       out_h);
       for (int do_average = 0; do_average <= 1; ++do_average) {
         ConvolveParams conv_params1 = get_conv_params_no_round(
             0, do_average, 0, output1, MAX_SB_SIZE, 1, bd);
diff --git a/test/convolve_test.cc b/test/convolve_test.cc
index ef80ef1..ae4c438 100644
--- a/test/convolve_test.cc
+++ b/test/convolve_test.cc
@@ -15,16 +15,16 @@
 
 #include "./aom_config.h"
 #include "./aom_dsp_rtcd.h"
+#include "aom_dsp/aom_dsp_common.h"
+#include "aom_dsp/aom_filter.h"
+#include "aom_mem/aom_mem.h"
+#include "aom_ports/aom_timer.h"
+#include "aom_ports/mem.h"
+#include "av1/common/filter.h"
 #include "test/acm_random.h"
 #include "test/clear_system_state.h"
 #include "test/register_state_check.h"
 #include "test/util.h"
-#include "aom_dsp/aom_dsp_common.h"
-#include "aom_dsp/aom_filter.h"
-#include "aom_mem/aom_mem.h"
-#include "aom_ports/mem.h"
-#include "aom_ports/aom_timer.h"
-#include "av1/common/filter.h"
 
 namespace {
 
@@ -494,7 +494,7 @@
     const InterpKernel *filters =
         (const InterpKernel *)av1_get_interp_filter_kernel(filter);
     const InterpFilterParams filter_params =
-        av1_get_interp_filter_params(filter);
+        av1_get_interp_filter_params_with_block_size(filter, 8);
     if (filter_params.taps != SUBPEL_TAPS) continue;
     for (int i = 0; i < kNumFilters; i++) {
       const int p0 = filters[i][0] + filters[i][1];
@@ -532,7 +532,7 @@
     const InterpKernel *filters =
         (const InterpKernel *)av1_get_interp_filter_kernel(filter);
     const InterpFilterParams filter_params =
-        av1_get_interp_filter_params(filter);
+        av1_get_interp_filter_params_with_block_size(filter, 8);
     if (filter_params.taps != SUBPEL_TAPS) continue;
 
     for (int filter_x = 0; filter_x < kNumFilters; ++filter_x) {
@@ -618,7 +618,7 @@
         const InterpKernel *filters =
             (const InterpKernel *)av1_get_interp_filter_kernel(filter);
         const InterpFilterParams filter_params =
-            av1_get_interp_filter_params(filter);
+            av1_get_interp_filter_params_with_block_size(filter, 8);
         if (filter_params.taps != SUBPEL_TAPS) continue;
         for (int filter_x = 0; filter_x < kNumFilters; ++filter_x) {
           for (int filter_y = 0; filter_y < kNumFilters; ++filter_y) {
@@ -717,7 +717,7 @@
       const InterpKernel *filters =
           (const InterpKernel *)av1_get_interp_filter_kernel(filter);
       const InterpFilterParams filter_params =
-          av1_get_interp_filter_params(filter);
+          av1_get_interp_filter_params_with_block_size(filter, 8);
       if (filter_params.taps != SUBPEL_TAPS) continue;
 
       for (int filter_x = 0; filter_x < kNumFilters; ++filter_x) {