src/third_party/libvpx/vp10/common/reconinter.c - cobalt - Git at Google

 /*
  *  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 <assert.h>

 #include "./vpx_scale_rtcd.h"
 #include "./vpx_config.h"

 #include "vpx/vpx_integer.h"

 #include "vp10/common/blockd.h"
 #include "vp10/common/reconinter.h"
 #include "vp10/common/reconintra.h"

 #if CONFIG_VP9_HIGHBITDEPTH
 void vp10_highbd_build_inter_predictor(const uint8_t *src, int src_stride,
                                       uint8_t *dst, int dst_stride,
                                       const MV *src_mv,
                                       const struct scale_factors *sf,
                                       int w, int h, int ref,
                                       const InterpKernel *kernel,
                                       enum mv_precision precision,
                                       int x, int y, int bd) {
   const int is_q4 = precision == MV_PRECISION_Q4;
   const MV mv_q4 = { is_q4 ? src_mv->row : src_mv->row * 2,
                      is_q4 ? src_mv->col : src_mv->col * 2 };
   MV32 mv = vp10_scale_mv(&mv_q4, x, y, sf);
   const int subpel_x = mv.col & SUBPEL_MASK;
   const int subpel_y = mv.row & SUBPEL_MASK;

   src += (mv.row >> SUBPEL_BITS) * src_stride + (mv.col >> SUBPEL_BITS);

   high_inter_predictor(src, src_stride, dst, dst_stride, subpel_x, subpel_y,
                        sf, w, h, ref, kernel, sf->x_step_q4, sf->y_step_q4, bd);
 }
 #endif  // CONFIG_VP9_HIGHBITDEPTH

 void vp10_build_inter_predictor(const uint8_t *src, int src_stride,
                                uint8_t *dst, int dst_stride,
                                const MV *src_mv,
                                const struct scale_factors *sf,
                                int w, int h, int ref,
                                const InterpKernel *kernel,
                                enum mv_precision precision,
                                int x, int y) {
   const int is_q4 = precision == MV_PRECISION_Q4;
   const MV mv_q4 = { is_q4 ? src_mv->row : src_mv->row * 2,
                      is_q4 ? src_mv->col : src_mv->col * 2 };
   MV32 mv = vp10_scale_mv(&mv_q4, x, y, sf);
   const int subpel_x = mv.col & SUBPEL_MASK;
   const int subpel_y = mv.row & SUBPEL_MASK;

   src += (mv.row >> SUBPEL_BITS) * src_stride + (mv.col >> SUBPEL_BITS);

   inter_predictor(src, src_stride, dst, dst_stride, subpel_x, subpel_y,
                   sf, w, h, ref, kernel, sf->x_step_q4, sf->y_step_q4);
 }

 void build_inter_predictors(MACROBLOCKD *xd, int plane, int block,
                                    int bw, int bh,
                                    int x, int y, int w, int h,
                                    int mi_x, int mi_y) {
   struct macroblockd_plane *const pd = &xd->plane[plane];
   const MODE_INFO *mi = xd->mi[0];
   const int is_compound = has_second_ref(&mi->mbmi);
   const InterpKernel *kernel = vp10_filter_kernels[mi->mbmi.interp_filter];
   int ref;

   for (ref = 0; ref < 1 + is_compound; ++ref) {
     const struct scale_factors *const sf = &xd->block_refs[ref]->sf;
     struct buf_2d *const pre_buf = &pd->pre[ref];
     struct buf_2d *const dst_buf = &pd->dst;
     uint8_t *const dst = dst_buf->buf + dst_buf->stride * y + x;
     const MV mv = mi->mbmi.sb_type < BLOCK_8X8
                ? average_split_mvs(pd, mi, ref, block)
                : mi->mbmi.mv[ref].as_mv;

     // TODO(jkoleszar): This clamping is done in the incorrect place for the
     // scaling case. It needs to be done on the scaled MV, not the pre-scaling
     // MV. Note however that it performs the subsampling aware scaling so
     // that the result is always q4.
     // mv_precision precision is MV_PRECISION_Q4.
     const MV mv_q4 = clamp_mv_to_umv_border_sb(xd, &mv, bw, bh,
                                                pd->subsampling_x,
                                                pd->subsampling_y);

     uint8_t *pre;
     MV32 scaled_mv;
     int xs, ys, subpel_x, subpel_y;
     const int is_scaled = vp10_is_scaled(sf);

     if (is_scaled) {
       pre = pre_buf->buf + scaled_buffer_offset(x, y, pre_buf->stride, sf);
       scaled_mv = vp10_scale_mv(&mv_q4, mi_x + x, mi_y + y, sf);
       xs = sf->x_step_q4;
       ys = sf->y_step_q4;
     } else {
       pre = pre_buf->buf + (y * pre_buf->stride + x);
       scaled_mv.row = mv_q4.row;
       scaled_mv.col = mv_q4.col;
       xs = ys = 16;
     }
     subpel_x = scaled_mv.col & SUBPEL_MASK;
     subpel_y = scaled_mv.row & SUBPEL_MASK;
     pre += (scaled_mv.row >> SUBPEL_BITS) * pre_buf->stride
            + (scaled_mv.col >> SUBPEL_BITS);

 #if CONFIG_VP9_HIGHBITDEPTH
     if (xd->cur_buf->flags & YV12_FLAG_HIGHBITDEPTH) {
       high_inter_predictor(pre, pre_buf->stride, dst, dst_buf->stride,
                            subpel_x, subpel_y, sf, w, h, ref, kernel, xs, ys,
                            xd->bd);
     } else {
       inter_predictor(pre, pre_buf->stride, dst, dst_buf->stride,
                       subpel_x, subpel_y, sf, w, h, ref, kernel, xs, ys);
     }
 #else
     inter_predictor(pre, pre_buf->stride, dst, dst_buf->stride,
                     subpel_x, subpel_y, sf, w, h, ref, kernel, xs, ys);
 #endif  // CONFIG_VP9_HIGHBITDEPTH
   }
 }

 void vp10_build_inter_predictor_sub8x8(MACROBLOCKD *xd, int plane,
                                        int i, int ir, int ic,
                                        int mi_row, int mi_col) {
   struct macroblockd_plane *const pd = &xd->plane[plane];
   MODE_INFO *const mi = xd->mi[0];
   const BLOCK_SIZE plane_bsize = get_plane_block_size(mi->mbmi.sb_type, pd);
   const int width = 4 * num_4x4_blocks_wide_lookup[plane_bsize];
   const int height = 4 * num_4x4_blocks_high_lookup[plane_bsize];

   uint8_t *const dst = &pd->dst.buf[(ir * pd->dst.stride + ic) << 2];
   int ref;
   const int is_compound = has_second_ref(&mi->mbmi);
   const InterpKernel *kernel = vp10_filter_kernels[mi->mbmi.interp_filter];

   for (ref = 0; ref < 1 + is_compound; ++ref) {
     const uint8_t *pre =
         &pd->pre[ref].buf[(ir * pd->pre[ref].stride + ic) << 2];
 #if CONFIG_VP9_HIGHBITDEPTH
   if (xd->cur_buf->flags & YV12_FLAG_HIGHBITDEPTH) {
     vp10_highbd_build_inter_predictor(pre, pd->pre[ref].stride,
                                       dst, pd->dst.stride,
                                       &mi->bmi[i].as_mv[ref].as_mv,
                                       &xd->block_refs[ref]->sf, width, height,
                                       ref, kernel, MV_PRECISION_Q3,
                                       mi_col * MI_SIZE + 4 * ic,
                                       mi_row * MI_SIZE + 4 * ir, xd->bd);
   } else {
     vp10_build_inter_predictor(pre, pd->pre[ref].stride,
                                dst, pd->dst.stride,
                                &mi->bmi[i].as_mv[ref].as_mv,
                                &xd->block_refs[ref]->sf, width, height, ref,
                                kernel, MV_PRECISION_Q3,
                                mi_col * MI_SIZE + 4 * ic,
                                mi_row * MI_SIZE + 4 * ir);
   }
 #else
     vp10_build_inter_predictor(pre, pd->pre[ref].stride,
                                dst, pd->dst.stride,
                                &mi->bmi[i].as_mv[ref].as_mv,
                                &xd->block_refs[ref]->sf, width, height, ref,
                                kernel, MV_PRECISION_Q3,
                                mi_col * MI_SIZE + 4 * ic,
                                mi_row * MI_SIZE + 4 * ir);
 #endif  // CONFIG_VP9_HIGHBITDEPTH
   }
 }

 static void build_inter_predictors_for_planes(MACROBLOCKD *xd, BLOCK_SIZE bsize,
                                               int mi_row, int mi_col,
                                               int plane_from, int plane_to) {
   int plane;
   const int mi_x = mi_col * MI_SIZE;
   const int mi_y = mi_row * MI_SIZE;
   for (plane = plane_from; plane <= plane_to; ++plane) {
     const struct macroblockd_plane *pd = &xd->plane[plane];
     const int bw = 4 * num_4x4_blocks_wide_lookup[bsize] >> pd->subsampling_x;
     const int bh = 4 * num_4x4_blocks_high_lookup[bsize] >> pd->subsampling_y;

     if (xd->mi[0]->mbmi.sb_type < BLOCK_8X8) {
       const PARTITION_TYPE bp = bsize - xd->mi[0]->mbmi.sb_type;
       const int have_vsplit = bp != PARTITION_HORZ;
       const int have_hsplit = bp != PARTITION_VERT;
       const int num_4x4_w = 2 >> ((!have_vsplit) | pd->subsampling_x);
       const int num_4x4_h = 2 >> ((!have_hsplit) | pd->subsampling_y);
       const int pw = 8 >> (have_vsplit | pd->subsampling_x);
       const int ph = 8 >> (have_hsplit | pd->subsampling_y);
       int x, y;
       assert(bp != PARTITION_NONE && bp < PARTITION_TYPES);
       assert(bsize == BLOCK_8X8);
       assert(pw * num_4x4_w == bw && ph * num_4x4_h == bh);
       for (y = 0; y < num_4x4_h; ++y)
         for (x = 0; x < num_4x4_w; ++x)
            build_inter_predictors(xd, plane, y * 2 + x, bw, bh,
                                   4 * x, 4 * y, pw, ph, mi_x, mi_y);
     } else {
       build_inter_predictors(xd, plane, 0, bw, bh,
                              0, 0, bw, bh, mi_x, mi_y);
     }
   }
 }

 void vp10_build_inter_predictors_sby(MACROBLOCKD *xd, int mi_row, int mi_col,
                                     BLOCK_SIZE bsize) {
   build_inter_predictors_for_planes(xd, bsize, mi_row, mi_col, 0, 0);
 }

 void vp10_build_inter_predictors_sbp(MACROBLOCKD *xd, int mi_row, int mi_col,
                                     BLOCK_SIZE bsize, int plane) {
   build_inter_predictors_for_planes(xd, bsize, mi_row, mi_col, plane, plane);
 }

 void vp10_build_inter_predictors_sbuv(MACROBLOCKD *xd, int mi_row, int mi_col,
                                      BLOCK_SIZE bsize) {
   build_inter_predictors_for_planes(xd, bsize, mi_row, mi_col, 1,
                                     MAX_MB_PLANE - 1);
 }

 void vp10_build_inter_predictors_sb(MACROBLOCKD *xd, int mi_row, int mi_col,
                                    BLOCK_SIZE bsize) {
   build_inter_predictors_for_planes(xd, bsize, mi_row, mi_col, 0,
                                     MAX_MB_PLANE - 1);
 }

 void vp10_setup_dst_planes(struct macroblockd_plane planes[MAX_MB_PLANE],
                           const YV12_BUFFER_CONFIG *src,
                           int mi_row, int mi_col) {
   uint8_t *const buffers[MAX_MB_PLANE] = { src->y_buffer, src->u_buffer,
       src->v_buffer};
   const int strides[MAX_MB_PLANE] = { src->y_stride, src->uv_stride,
       src->uv_stride};
   int i;

   for (i = 0; i < MAX_MB_PLANE; ++i) {
     struct macroblockd_plane *const pd = &planes[i];
     setup_pred_plane(&pd->dst, buffers[i], strides[i], mi_row, mi_col, NULL,
                      pd->subsampling_x, pd->subsampling_y);
   }
 }

 void vp10_setup_pre_planes(MACROBLOCKD *xd, int idx,
                           const YV12_BUFFER_CONFIG *src,
                           int mi_row, int mi_col,
                           const struct scale_factors *sf) {
   if (src != NULL) {
     int i;
     uint8_t *const buffers[MAX_MB_PLANE] = { src->y_buffer, src->u_buffer,
         src->v_buffer};
     const int strides[MAX_MB_PLANE] = { src->y_stride, src->uv_stride,
         src->uv_stride};
     for (i = 0; i < MAX_MB_PLANE; ++i) {
       struct macroblockd_plane *const pd = &xd->plane[i];
       setup_pred_plane(&pd->pre[idx], buffers[i], strides[i], mi_row, mi_col,
                        sf, pd->subsampling_x, pd->subsampling_y);
     }
   }
 }
	/*
	* 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 <assert.h>

	#include "./vpx_scale_rtcd.h"
	#include "./vpx_config.h"

	#include "vpx/vpx_integer.h"

	#include "vp10/common/blockd.h"
	#include "vp10/common/reconinter.h"
	#include "vp10/common/reconintra.h"

	#if CONFIG_VP9_HIGHBITDEPTH
	void vp10_highbd_build_inter_predictor(const uint8_t *src, int src_stride,
	uint8_t *dst, int dst_stride,
	const MV *src_mv,
	const struct scale_factors *sf,
	int w, int h, int ref,
	const InterpKernel *kernel,
	enum mv_precision precision,
	int x, int y, int bd) {
	const int is_q4 = precision == MV_PRECISION_Q4;
	const MV mv_q4 = { is_q4 ? src_mv->row : src_mv->row * 2,
	is_q4 ? src_mv->col : src_mv->col * 2 };
	MV32 mv = vp10_scale_mv(&mv_q4, x, y, sf);
	const int subpel_x = mv.col & SUBPEL_MASK;
	const int subpel_y = mv.row & SUBPEL_MASK;

	src += (mv.row >> SUBPEL_BITS) * src_stride + (mv.col >> SUBPEL_BITS);

	high_inter_predictor(src, src_stride, dst, dst_stride, subpel_x, subpel_y,
	sf, w, h, ref, kernel, sf->x_step_q4, sf->y_step_q4, bd);
	}
	#endif // CONFIG_VP9_HIGHBITDEPTH

	void vp10_build_inter_predictor(const uint8_t *src, int src_stride,
	uint8_t *dst, int dst_stride,
	const MV *src_mv,
	const struct scale_factors *sf,
	int w, int h, int ref,
	const InterpKernel *kernel,
	enum mv_precision precision,
	int x, int y) {
	const int is_q4 = precision == MV_PRECISION_Q4;
	const MV mv_q4 = { is_q4 ? src_mv->row : src_mv->row * 2,
	is_q4 ? src_mv->col : src_mv->col * 2 };
	MV32 mv = vp10_scale_mv(&mv_q4, x, y, sf);
	const int subpel_x = mv.col & SUBPEL_MASK;
	const int subpel_y = mv.row & SUBPEL_MASK;

	src += (mv.row >> SUBPEL_BITS) * src_stride + (mv.col >> SUBPEL_BITS);

	inter_predictor(src, src_stride, dst, dst_stride, subpel_x, subpel_y,
	sf, w, h, ref, kernel, sf->x_step_q4, sf->y_step_q4);
	}

	void build_inter_predictors(MACROBLOCKD *xd, int plane, int block,
	int bw, int bh,
	int x, int y, int w, int h,
	int mi_x, int mi_y) {
	struct macroblockd_plane *const pd = &xd->plane[plane];
	const MODE_INFO *mi = xd->mi[0];
	const int is_compound = has_second_ref(&mi->mbmi);
	const InterpKernel *kernel = vp10_filter_kernels[mi->mbmi.interp_filter];
	int ref;

	for (ref = 0; ref < 1 + is_compound; ++ref) {
	const struct scale_factors *const sf = &xd->block_refs[ref]->sf;
	struct buf_2d *const pre_buf = &pd->pre[ref];
	struct buf_2d *const dst_buf = &pd->dst;
	uint8_t const dst = dst_buf->buf + dst_buf->stride y + x;
	const MV mv = mi->mbmi.sb_type < BLOCK_8X8
	? average_split_mvs(pd, mi, ref, block)
	: mi->mbmi.mv[ref].as_mv;

	// TODO(jkoleszar): This clamping is done in the incorrect place for the
	// scaling case. It needs to be done on the scaled MV, not the pre-scaling
	// MV. Note however that it performs the subsampling aware scaling so
	// that the result is always q4.
	// mv_precision precision is MV_PRECISION_Q4.
	const MV mv_q4 = clamp_mv_to_umv_border_sb(xd, &mv, bw, bh,
	pd->subsampling_x,
	pd->subsampling_y);

	uint8_t *pre;
	MV32 scaled_mv;
	int xs, ys, subpel_x, subpel_y;
	const int is_scaled = vp10_is_scaled(sf);

	if (is_scaled) {
	pre = pre_buf->buf + scaled_buffer_offset(x, y, pre_buf->stride, sf);
	scaled_mv = vp10_scale_mv(&mv_q4, mi_x + x, mi_y + y, sf);
	xs = sf->x_step_q4;
	ys = sf->y_step_q4;
	} else {
	pre = pre_buf->buf + (y * pre_buf->stride + x);
	scaled_mv.row = mv_q4.row;
	scaled_mv.col = mv_q4.col;
	xs = ys = 16;
	}
	subpel_x = scaled_mv.col & SUBPEL_MASK;
	subpel_y = scaled_mv.row & SUBPEL_MASK;
	pre += (scaled_mv.row >> SUBPEL_BITS) * pre_buf->stride
	+ (scaled_mv.col >> SUBPEL_BITS);

	#if CONFIG_VP9_HIGHBITDEPTH
	if (xd->cur_buf->flags & YV12_FLAG_HIGHBITDEPTH) {
	high_inter_predictor(pre, pre_buf->stride, dst, dst_buf->stride,
	subpel_x, subpel_y, sf, w, h, ref, kernel, xs, ys,
	xd->bd);
	} else {
	inter_predictor(pre, pre_buf->stride, dst, dst_buf->stride,
	subpel_x, subpel_y, sf, w, h, ref, kernel, xs, ys);
	}
	#else
	inter_predictor(pre, pre_buf->stride, dst, dst_buf->stride,
	subpel_x, subpel_y, sf, w, h, ref, kernel, xs, ys);
	#endif // CONFIG_VP9_HIGHBITDEPTH
	}
	}

	void vp10_build_inter_predictor_sub8x8(MACROBLOCKD *xd, int plane,
	int i, int ir, int ic,
	int mi_row, int mi_col) {
	struct macroblockd_plane *const pd = &xd->plane[plane];
	MODE_INFO *const mi = xd->mi[0];
	const BLOCK_SIZE plane_bsize = get_plane_block_size(mi->mbmi.sb_type, pd);
	const int width = 4 * num_4x4_blocks_wide_lookup[plane_bsize];
	const int height = 4 * num_4x4_blocks_high_lookup[plane_bsize];

	uint8_t const dst = &pd->dst.buf[(ir pd->dst.stride + ic) << 2];
	int ref;
	const int is_compound = has_second_ref(&mi->mbmi);
	const InterpKernel *kernel = vp10_filter_kernels[mi->mbmi.interp_filter];

	for (ref = 0; ref < 1 + is_compound; ++ref) {
	const uint8_t *pre =
	&pd->pre[ref].buf[(ir * pd->pre[ref].stride + ic) << 2];
	#if CONFIG_VP9_HIGHBITDEPTH
	if (xd->cur_buf->flags & YV12_FLAG_HIGHBITDEPTH) {
	vp10_highbd_build_inter_predictor(pre, pd->pre[ref].stride,
	dst, pd->dst.stride,
	&mi->bmi[i].as_mv[ref].as_mv,
	&xd->block_refs[ref]->sf, width, height,
	ref, kernel, MV_PRECISION_Q3,
	mi_col * MI_SIZE + 4 * ic,
	mi_row * MI_SIZE + 4 * ir, xd->bd);
	} else {
	vp10_build_inter_predictor(pre, pd->pre[ref].stride,
	dst, pd->dst.stride,
	&mi->bmi[i].as_mv[ref].as_mv,
	&xd->block_refs[ref]->sf, width, height, ref,
	kernel, MV_PRECISION_Q3,
	mi_col * MI_SIZE + 4 * ic,
	mi_row * MI_SIZE + 4 * ir);
	}
	#else
	vp10_build_inter_predictor(pre, pd->pre[ref].stride,
	dst, pd->dst.stride,
	&mi->bmi[i].as_mv[ref].as_mv,
	&xd->block_refs[ref]->sf, width, height, ref,
	kernel, MV_PRECISION_Q3,
	mi_col * MI_SIZE + 4 * ic,
	mi_row * MI_SIZE + 4 * ir);
	#endif // CONFIG_VP9_HIGHBITDEPTH
	}
	}

	static void build_inter_predictors_for_planes(MACROBLOCKD *xd, BLOCK_SIZE bsize,
	int mi_row, int mi_col,
	int plane_from, int plane_to) {
	int plane;
	const int mi_x = mi_col * MI_SIZE;
	const int mi_y = mi_row * MI_SIZE;
	for (plane = plane_from; plane <= plane_to; ++plane) {
	const struct macroblockd_plane *pd = &xd->plane[plane];
	const int bw = 4 * num_4x4_blocks_wide_lookup[bsize] >> pd->subsampling_x;
	const int bh = 4 * num_4x4_blocks_high_lookup[bsize] >> pd->subsampling_y;

	if (xd->mi[0]->mbmi.sb_type < BLOCK_8X8) {
	const PARTITION_TYPE bp = bsize - xd->mi[0]->mbmi.sb_type;
	const int have_vsplit = bp != PARTITION_HORZ;
	const int have_hsplit = bp != PARTITION_VERT;
	const int num_4x4_w = 2 >> ((!have_vsplit) \| pd->subsampling_x);
	const int num_4x4_h = 2 >> ((!have_hsplit) \| pd->subsampling_y);
	const int pw = 8 >> (have_vsplit \| pd->subsampling_x);
	const int ph = 8 >> (have_hsplit \| pd->subsampling_y);
	int x, y;
	assert(bp != PARTITION_NONE && bp < PARTITION_TYPES);
	assert(bsize == BLOCK_8X8);
	assert(pw * num_4x4_w == bw && ph * num_4x4_h == bh);
	for (y = 0; y < num_4x4_h; ++y)
	for (x = 0; x < num_4x4_w; ++x)
	build_inter_predictors(xd, plane, y * 2 + x, bw, bh,
	4 * x, 4 * y, pw, ph, mi_x, mi_y);
	} else {
	build_inter_predictors(xd, plane, 0, bw, bh,
	0, 0, bw, bh, mi_x, mi_y);
	}
	}
	}

	void vp10_build_inter_predictors_sby(MACROBLOCKD *xd, int mi_row, int mi_col,
	BLOCK_SIZE bsize) {
	build_inter_predictors_for_planes(xd, bsize, mi_row, mi_col, 0, 0);
	}

	void vp10_build_inter_predictors_sbp(MACROBLOCKD *xd, int mi_row, int mi_col,
	BLOCK_SIZE bsize, int plane) {
	build_inter_predictors_for_planes(xd, bsize, mi_row, mi_col, plane, plane);
	}

	void vp10_build_inter_predictors_sbuv(MACROBLOCKD *xd, int mi_row, int mi_col,
	BLOCK_SIZE bsize) {
	build_inter_predictors_for_planes(xd, bsize, mi_row, mi_col, 1,
	MAX_MB_PLANE - 1);
	}

	void vp10_build_inter_predictors_sb(MACROBLOCKD *xd, int mi_row, int mi_col,
	BLOCK_SIZE bsize) {
	build_inter_predictors_for_planes(xd, bsize, mi_row, mi_col, 0,
	MAX_MB_PLANE - 1);
	}

	void vp10_setup_dst_planes(struct macroblockd_plane planes[MAX_MB_PLANE],
	const YV12_BUFFER_CONFIG *src,
	int mi_row, int mi_col) {
	uint8_t *const buffers[MAX_MB_PLANE] = { src->y_buffer, src->u_buffer,
	src->v_buffer};
	const int strides[MAX_MB_PLANE] = { src->y_stride, src->uv_stride,
	src->uv_stride};
	int i;

	for (i = 0; i < MAX_MB_PLANE; ++i) {
	struct macroblockd_plane *const pd = &planes[i];
	setup_pred_plane(&pd->dst, buffers[i], strides[i], mi_row, mi_col, NULL,
	pd->subsampling_x, pd->subsampling_y);
	}
	}

	void vp10_setup_pre_planes(MACROBLOCKD *xd, int idx,
	const YV12_BUFFER_CONFIG *src,
	int mi_row, int mi_col,
	const struct scale_factors *sf) {
	if (src != NULL) {
	int i;
	uint8_t *const buffers[MAX_MB_PLANE] = { src->y_buffer, src->u_buffer,
	src->v_buffer};
	const int strides[MAX_MB_PLANE] = { src->y_stride, src->uv_stride,
	src->uv_stride};
	for (i = 0; i < MAX_MB_PLANE; ++i) {
	struct macroblockd_plane *const pd = &xd->plane[i];
	setup_pred_plane(&pd->pre[idx], buffers[i], strides[i], mi_row, mi_col,
	sf, pd->subsampling_x, pd->subsampling_y);
	}
	}
	}