Clean up ext-interp experiment

Remove the unused sub-experiments within the ext-interp experiment.

Change-Id: I716e3392412d02c56f9395a86c9cab02f580fa59

vp10/common/entropymode.c

@@ -901,16 +901,7 @@ static const vpx_prob default_skip_probs[SKIP_CONTEXTS] = {
   192, 128, 64
 };
 
-#if CONFIG_EXT_INTERP && SWITCHABLE_FILTERS == 4
-static const vpx_prob default_switchable_interp_prob[SWITCHABLE_FILTER_CONTEXTS]
-                                                    [SWITCHABLE_FILTERS - 1] = {
-  { 235, 192, 128},
-  { 36, 243, 208},
-  { 34, 16, 128},
-  { 36, 243, 48},
-  { 149, 160, 128},
-};
-#elif CONFIG_EXT_INTERP && SWITCHABLE_FILTERS == 5
+#if CONFIG_EXT_INTERP
 static const vpx_prob default_switchable_interp_prob[SWITCHABLE_FILTER_CONTEXTS]
                                                     [SWITCHABLE_FILTERS - 1] = {
   { 235, 192, 128, 128},
@@ -1236,14 +1227,7 @@ static void init_mode_probs(FRAME_CONTEXT *fc) {
   vp10_copy(fc->intra_ext_tx_prob, default_intra_ext_tx_prob);
 }
 
-#if CONFIG_EXT_INTERP && SWITCHABLE_FILTERS == 4
-const vpx_tree_index vp10_switchable_interp_tree
-[TREE_SIZE(SWITCHABLE_FILTERS)] = {
-  -EIGHTTAP_REGULAR, 2,
-  4, -MULTITAP_SHARP,
-  -EIGHTTAP_SMOOTH, -EIGHTTAP_SMOOTH2,
-};
-#elif CONFIG_EXT_INTERP && SWITCHABLE_FILTERS == 5
+#if CONFIG_EXT_INTERP
 const vpx_tree_index vp10_switchable_interp_tree
 [TREE_SIZE(SWITCHABLE_FILTERS)] = {
   -EIGHTTAP_REGULAR, 2,

vp10/common/filter.c

@@ -121,7 +121,6 @@ DECLARE_ALIGNED(256, static const int16_t,
   {0,  -1,   2,  -4,   8, 127,  -6,   3,  -1, 0},
 };
 
-#if SWITCHABLE_FILTERS >= 4
 DECLARE_ALIGNED(256, static const InterpKernel,
                 sub_pel_filters_8smooth2[SUBPEL_SHIFTS]) = {
 // freqmultiplier = 0.35
@@ -163,9 +162,7 @@ DECLARE_ALIGNED(256, static const InterpKernel,
   {0,   2, -12,  37,  94,  14,  -9, 2},
   {0,   2, -11,  31,  95,  19, -10, 2},
 };
-#endif  // SWITCHABLE_FILTERS >= 4
 
-#if SWITCHABLE_FILTERS == 5
 DECLARE_ALIGNED(16, static const int16_t,
                 sub_pel_filters_12sharp[SUBPEL_SHIFTS][12]) = {
   // intfilt 0.85
@@ -186,8 +183,6 @@ DECLARE_ALIGNED(16, static const int16_t,
   {-1,   2,  -2,   4,  -8,  18, 124, -13,   6,  -3,   2, -1},
   {0,   1,  -1,   2,  -4,   8, 127,  -7,   3,  -2,   1, 0},
 };
-#endif
-
 #else  // CONFIG_EXT_INTERP
 
 DECLARE_ALIGNED(256, static const InterpKernel,
@@ -269,12 +264,8 @@ vp10_interp_filter_params_list[SWITCHABLE_FILTERS + 1] = {
   {(const int16_t*)sub_pel_filters_8, SUBPEL_TAPS, SUBPEL_SHIFTS},
   {(const int16_t*)sub_pel_filters_8smooth, SUBPEL_TAPS, SUBPEL_SHIFTS},
   {(const int16_t*)sub_pel_filters_10sharp, 10, SUBPEL_SHIFTS},
-#if SWITCHABLE_FILTERS >= 4
   {(const int16_t*)sub_pel_filters_8smooth2, SUBPEL_TAPS, SUBPEL_SHIFTS},
-#endif
-#if SWITCHABLE_FILTERS == 5
   {(const int16_t*)sub_pel_filters_12sharp, 12, SUBPEL_SHIFTS},
-#endif
   {(const int16_t*)bilinear_filters, SUBPEL_TAPS, SUBPEL_SHIFTS}
 };
 #else

vp10/common/filter.h

@@ -26,17 +26,13 @@ extern "C" {
 #define MULTITAP_SHARP      2
 
 #if CONFIG_EXT_INTERP
-#define MAX_SUBPEL_TAPS    12
-#define SUPPORT_NONINTERPOLATING_FILTERS 0  /* turn it on for experimentation */
-#define SWITCHABLE_FILTERS  5 /* Number of switchable filters */
-
-#if SWITCHABLE_FILTERS >= 4
 #define EIGHTTAP_SMOOTH2    3
-#endif
-#if SWITCHABLE_FILTERS == 5
 #define MULTITAP_SHARP2     4
-#endif  // SWITCHABLE_FILTERS
 
+#define MAX_SUBPEL_TAPS    12
+
+#define SUPPORT_NONINTERPOLATING_FILTERS 0  /* turn it on for experimentation */
+#define SWITCHABLE_FILTERS  5 /* Number of switchable filters */
 #else
 #define SWITCHABLE_FILTERS  3 /* Number of switchable filters */
 #endif  // CONFIG_EXT_INTERP

vp10/encoder/bitstream.c

@@ -42,16 +42,13 @@
 static const struct vp10_token intra_mode_encodings[INTRA_MODES] = {
   {0, 1}, {6, 3}, {28, 5}, {30, 5}, {58, 6}, {59, 6}, {126, 7}, {127, 7},
   {62, 6}, {2, 2}};
-#if CONFIG_EXT_INTERP && SWITCHABLE_FILTERS == 4
-static const struct vp10_token switchable_interp_encodings[SWITCHABLE_FILTERS] =
-  {{0, 1}, {4, 3}, {3, 2}, {5, 3}};
-#elif CONFIG_EXT_INTERP && SWITCHABLE_FILTERS == 5
+#if CONFIG_EXT_INTERP
 static const struct vp10_token switchable_interp_encodings[SWITCHABLE_FILTERS] =
   {{0, 1}, {4, 3}, {6, 3}, {5, 3}, {7, 3}};
 #else
 static const struct vp10_token switchable_interp_encodings[SWITCHABLE_FILTERS] =
   {{0, 1}, {2, 2}, {3, 2}};
-#endif  // CONFIG_EXT_INTERP && SWITCHABLE_FILTERS == 4
+#endif  // CONFIG_EXT_INTERP
 #if CONFIG_EXT_PARTITION_TYPES
 static const struct vp10_token ext_partition_encodings[EXT_PARTITION_TYPES] =
   {{0, 1}, {4, 3}, {12, 4}, {7, 3}, {10, 4}, {11, 4}, {26, 5}, {27, 5}};