remove rotation experiment

This is being reimplemented more generically in terms of affine
transforms.

Change-Id: I9300bfde5f8b93c708c64f59427087720f8ed782

configure

@@ -226,7 +226,6 @@ EXPERIMENT_LIST="
     switchable_interp
     tx16x16
     newbestrefmv
-    rotation
 "
 CONFIG_LIST="
     external_build

vp8/common/predict_rotated.c

-/*
- *  Copyright (c) 2012 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 "vpx_config.h"
-
-#if CONFIG_ROTATION
-typedef struct {
-  int y;
-  int x;
-  unsigned long t;
-} tap;
-
-typedef struct {
-  tap pt[4];
-} point_taps;
-
-typedef struct {
-  point_taps pt[256];
-} mb_taps;
-
-mb_taps mt_8x8[] = {
-#include "rotate2.h"
-};
-
-mb_taps mt[] = {
-#include "rotate.h"
-};
-
-void predict_rotated_16x16(int rotation_index, unsigned char *src, int sp,
-                           unsigned char *dst, int dp) {
-  int i, j, k, p = 0;
-
-  for (i = 0; i < 16; i++, dst += dp) {
-    for (j = 0; j < 16; j++, p++) {
-      unsigned int sum = 32768;
-
-      for (k = 0; k < 4; k++) {
-        tap *tp = &mt[rotation_index].pt[p].pt[k];
-        sum += src[tp->y * sp + tp->x] * tp->t;
-      }
-      sum >>= 16;
-      dst[j] = sum;
-    }
-  }
-}
-void predict_rotated_8x8(int rotation_index, unsigned char *src, int sp,
-                         unsigned char *dst, int dp) {
-  int i, j, k, p = 0;
-
-  for (i = 0; i < 8; i++, dst += dp) {
-    for (j = 0; j < 8; j++, p++) {
-      unsigned int sum = 32768;
-
-      for (k = 0; k < 4; k++) {
-        tap *tp = &mt_8x8[rotation_index].pt[p].pt[k];
-        sum += src[tp->y * sp + tp->x] * tp->t;
-      }
-      sum >>= 16;
-      dst[j] = sum;
-    }
-  }
-}
-#endif
-
-
-
-

vp8/encoder/find_rotation.c

-/*
- *  Copyright (c) 2012 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 "block.h"
-#include "variance.h"
-
-#if CONFIG_ROTATION
-
-int vp8_find_best_rotation(MACROBLOCK *x, BLOCK *b, BLOCKD *d, int_mv *bestmv,
-                           int_mv *ref_mv, int *bri, int error_per_bit,
-                           const vp8_variance_fn_ptr_t *vfp, int *mvcost[2],
-                           int *distortion, unsigned int *sse1) {
-  unsigned char *z = (*(b->base_src) + b->src);
-
-  int ri;
-
-  int y_stride;
-
-  unsigned int besterr;
-  int br = bestmv->as_mv.row;
-  int bc = bestmv->as_mv.col;
-  unsigned char *y = *(d->base_pre) + d->pre + br * d->pre_stride + bc;
-  y_stride = d->pre_stride;
-
-  // calculate central point error
-  besterr = vfp->vf(y, y_stride, z, b->src_stride, sse1);
-  *distortion = besterr;
-
-  // find the best matching rotation
-  *bri = 5;
-  for (ri = 0; ri < ROTATIONS; ri++) {
-    unsigned int this_err;
-    unsigned char pb[256];
-    predict_rotated_16x16(ri, y, y_stride, pb, 16);
-    this_err = vfp->vf(pb, 16, z, b->src_stride, sse1);
-
-    if (this_err < besterr) {
-      *bri = ri;
-      besterr = this_err;
-    }
-  }
-  *sse1 = besterr;
-  *distortion = besterr;
-
-  return 0;
-}
-
-#endif

vp8/vp8_common.mk

@@ -77,9 +77,6 @@ VP8_COMMON_SRCS-yes += common/swapyv12buffer.c
 VP8_COMMON_SRCS-$(CONFIG_POSTPROC_VISUALIZER) += common/textblit.c
 VP8_COMMON_SRCS-yes += common/treecoder.c
 VP8_COMMON_SRCS-yes += common/implicit_segmentation.c
-VP8_COMMON_SRCS-yes += common/predict_rotated.c
-VP8_COMMON_SRCS-yes += common/rotate.h
-VP8_COMMON_SRCS-yes += common/rotate2.h
 
 VP8_COMMON_SRCS-$(ARCH_X86)$(ARCH_X86_64) += common/x86/idct_x86.h
 VP8_COMMON_SRCS-$(ARCH_X86)$(ARCH_X86_64) += common/x86/subpixel_x86.h

vp8/vp8cx.mk

@@ -83,7 +83,6 @@ VP8_CX_SRCS-$(CONFIG_INTERNAL_STATS) += common/postproc.h
 VP8_CX_SRCS-$(CONFIG_INTERNAL_STATS) += common/postproc.c
 VP8_CX_SRCS-yes += encoder/temporal_filter.c
 VP8_CX_SRCS-yes += encoder/temporal_filter.h
-VP8_CX_SRCS-yes += encoder/find_rotation.c
 VP8_CX_SRCS-yes += encoder/mbgraph.c
 VP8_CX_SRCS-yes += encoder/mbgraph.h