vp10/common/reconinter.h - webm/libvpx - 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.
  */

 #ifndef VP10_COMMON_RECONINTER_H_
 #define VP10_COMMON_RECONINTER_H_

 #include "vp10/common/filter.h"
 #include "vp10/common/onyxc_int.h"
 #include "vpx/vpx_integer.h"
 #include "vpx_dsp/vpx_filter.h"

 #ifdef __cplusplus
 extern "C" {
 #endif

 static INLINE void inter_predictor(const uint8_t *src, int src_stride,
                                    uint8_t *dst, int dst_stride,
                                    const int subpel_x,
                                    const int subpel_y,
                                    const struct scale_factors *sf,
                                    int w, int h, int ref,
                                    const InterpKernel *kernel,
                                    int xs, int ys) {
   sf->predict[subpel_x != 0][subpel_y != 0][ref](
       src, src_stride, dst, dst_stride,
       kernel[subpel_x], xs, kernel[subpel_y], ys, w, h);
 }

 #if CONFIG_VP9_HIGHBITDEPTH
 static INLINE void high_inter_predictor(const uint8_t *src, int src_stride,
                                         uint8_t *dst, int dst_stride,
                                         const int subpel_x,
                                         const int subpel_y,
                                         const struct scale_factors *sf,
                                         int w, int h, int ref,
                                         const InterpKernel *kernel,
                                         int xs, int ys, int bd) {
   sf->highbd_predict[subpel_x != 0][subpel_y != 0][ref](
       src, src_stride, dst, dst_stride,
       kernel[subpel_x], xs, kernel[subpel_y], ys, w, h, bd);
 }
 #endif  // CONFIG_VP9_HIGHBITDEPTH

 static INLINE int round_mv_comp_q4(int value) {
   return (value < 0 ? value - 2 : value + 2) / 4;
 }

 static MV mi_mv_pred_q4(const MODE_INFO *mi, int idx) {
   MV res = { round_mv_comp_q4(mi->bmi[0].as_mv[idx].as_mv.row +
                               mi->bmi[1].as_mv[idx].as_mv.row +
                               mi->bmi[2].as_mv[idx].as_mv.row +
                               mi->bmi[3].as_mv[idx].as_mv.row),
              round_mv_comp_q4(mi->bmi[0].as_mv[idx].as_mv.col +
                               mi->bmi[1].as_mv[idx].as_mv.col +
                               mi->bmi[2].as_mv[idx].as_mv.col +
                               mi->bmi[3].as_mv[idx].as_mv.col) };
   return res;
 }

 static INLINE int round_mv_comp_q2(int value) {
   return (value < 0 ? value - 1 : value + 1) / 2;
 }

 static MV mi_mv_pred_q2(const MODE_INFO *mi, int idx, int block0, int block1) {
   MV res = { round_mv_comp_q2(mi->bmi[block0].as_mv[idx].as_mv.row +
                               mi->bmi[block1].as_mv[idx].as_mv.row),
              round_mv_comp_q2(mi->bmi[block0].as_mv[idx].as_mv.col +
                               mi->bmi[block1].as_mv[idx].as_mv.col) };
   return res;
 }

 // TODO(jkoleszar): yet another mv clamping function :-(
 static INLINE MV clamp_mv_to_umv_border_sb(const MACROBLOCKD *xd,
                                            const MV *src_mv,
                                            int bw, int bh, int ss_x, int ss_y) {
   // If the MV points so far into the UMV border that no visible pixels
   // are used for reconstruction, the subpel part of the MV can be
   // discarded and the MV limited to 16 pixels with equivalent results.
   const int spel_left = (VP9_INTERP_EXTEND + bw) << SUBPEL_BITS;
   const int spel_right = spel_left - SUBPEL_SHIFTS;
   const int spel_top = (VP9_INTERP_EXTEND + bh) << SUBPEL_BITS;
   const int spel_bottom = spel_top - SUBPEL_SHIFTS;
   MV clamped_mv = {
     src_mv->row * (1 << (1 - ss_y)),
     src_mv->col * (1 << (1 - ss_x))
   };
   assert(ss_x <= 1);
   assert(ss_y <= 1);

   clamp_mv(&clamped_mv,
            xd->mb_to_left_edge * (1 << (1 - ss_x)) - spel_left,
            xd->mb_to_right_edge * (1 << (1 - ss_x)) + spel_right,
            xd->mb_to_top_edge * (1 << (1 - ss_y)) - spel_top,
            xd->mb_to_bottom_edge * (1 << (1 - ss_y)) + spel_bottom);

   return clamped_mv;
 }

 static INLINE MV average_split_mvs(const struct macroblockd_plane *pd,
                                    const MODE_INFO *mi, int ref, int block) {
   const int ss_idx = ((pd->subsampling_x > 0) << 1) | (pd->subsampling_y > 0);
   MV res = {0, 0};
   switch (ss_idx) {
     case 0:
       res = mi->bmi[block].as_mv[ref].as_mv;
       break;
     case 1:
       res = mi_mv_pred_q2(mi, ref, block, block + 2);
       break;
     case 2:
       res = mi_mv_pred_q2(mi, ref, block, block + 1);
       break;
     case 3:
       res = mi_mv_pred_q4(mi, ref);
       break;
     default:
       assert(ss_idx <= 3 && ss_idx >= 0);
   }
   return res;
 }

 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);

 void vp10_build_inter_predictor_sub8x8(MACROBLOCKD *xd, int plane,
                                        int i, int ir, int ic,
                                        int mi_row, int mi_col);

 void vp10_build_inter_predictors_sby(MACROBLOCKD *xd, int mi_row, int mi_col,
                                     BLOCK_SIZE bsize);

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

 void vp10_build_inter_predictors_sbuv(MACROBLOCKD *xd, int mi_row, int mi_col,
                                      BLOCK_SIZE bsize);

 void vp10_build_inter_predictors_sb(MACROBLOCKD *xd, int mi_row, int mi_col,
                                    BLOCK_SIZE bsize);

 void vp10_build_inter_predictor(const uint8_t *src, int src_stride,
                                uint8_t *dst, int dst_stride,
                                const MV *mv_q3,
                                const struct scale_factors *sf,
                                int w, int h, int do_avg,
                                const InterpKernel *kernel,
                                enum mv_precision precision,
                                int x, int y);

 #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 *mv_q3,
                                       const struct scale_factors *sf,
                                       int w, int h, int do_avg,
                                       const InterpKernel *kernel,
                                       enum mv_precision precision,
                                       int x, int y, int bd);
 #endif

 static INLINE int scaled_buffer_offset(int x_offset, int y_offset, int stride,
                                        const struct scale_factors *sf) {
   const int x = sf ? sf->scale_value_x(x_offset, sf) : x_offset;
   const int y = sf ? sf->scale_value_y(y_offset, sf) : y_offset;
   return y * stride + x;
 }

 static INLINE void setup_pred_plane(struct buf_2d *dst,
                                     uint8_t *src, int stride,
                                     int mi_row, int mi_col,
                                     const struct scale_factors *scale,
                                     int subsampling_x, int subsampling_y) {
   const int x = (MI_SIZE * mi_col) >> subsampling_x;
   const int y = (MI_SIZE * mi_row) >> subsampling_y;
   dst->buf = src + scaled_buffer_offset(x, y, stride, scale);
   dst->stride = stride;
 }

 void vp10_setup_dst_planes(struct macroblockd_plane planes[MAX_MB_PLANE],
                           const YV12_BUFFER_CONFIG *src,
                           int mi_row, int mi_col);

 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);

 #ifdef __cplusplus
 }  // extern "C"
 #endif

 #endif  // VP10_COMMON_RECONINTER_H_
	/*
	* 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.
	*/

	#ifndef VP10_COMMON_RECONINTER_H_
	#define VP10_COMMON_RECONINTER_H_

	#include "vp10/common/filter.h"
	#include "vp10/common/onyxc_int.h"
	#include "vpx/vpx_integer.h"
	#include "vpx_dsp/vpx_filter.h"

	#ifdef __cplusplus
	extern "C" {
	#endif

	static INLINE void inter_predictor(const uint8_t *src, int src_stride,
	uint8_t *dst, int dst_stride,
	const int subpel_x,
	const int subpel_y,
	const struct scale_factors *sf,
	int w, int h, int ref,
	const InterpKernel *kernel,
	int xs, int ys) {
	sf->predict[subpel_x != 0][subpel_y != 0][ref](
	src, src_stride, dst, dst_stride,
	kernel[subpel_x], xs, kernel[subpel_y], ys, w, h);
	}

	#if CONFIG_VP9_HIGHBITDEPTH
	static INLINE void high_inter_predictor(const uint8_t *src, int src_stride,
	uint8_t *dst, int dst_stride,
	const int subpel_x,
	const int subpel_y,
	const struct scale_factors *sf,
	int w, int h, int ref,
	const InterpKernel *kernel,
	int xs, int ys, int bd) {
	sf->highbd_predict[subpel_x != 0][subpel_y != 0][ref](
	src, src_stride, dst, dst_stride,
	kernel[subpel_x], xs, kernel[subpel_y], ys, w, h, bd);
	}
	#endif // CONFIG_VP9_HIGHBITDEPTH

	static INLINE int round_mv_comp_q4(int value) {
	return (value < 0 ? value - 2 : value + 2) / 4;
	}

	static MV mi_mv_pred_q4(const MODE_INFO *mi, int idx) {
	MV res = { round_mv_comp_q4(mi->bmi[0].as_mv[idx].as_mv.row +
	mi->bmi[1].as_mv[idx].as_mv.row +
	mi->bmi[2].as_mv[idx].as_mv.row +
	mi->bmi[3].as_mv[idx].as_mv.row),
	round_mv_comp_q4(mi->bmi[0].as_mv[idx].as_mv.col +
	mi->bmi[1].as_mv[idx].as_mv.col +
	mi->bmi[2].as_mv[idx].as_mv.col +
	mi->bmi[3].as_mv[idx].as_mv.col) };
	return res;
	}

	static INLINE int round_mv_comp_q2(int value) {
	return (value < 0 ? value - 1 : value + 1) / 2;
	}

	static MV mi_mv_pred_q2(const MODE_INFO *mi, int idx, int block0, int block1) {
	MV res = { round_mv_comp_q2(mi->bmi[block0].as_mv[idx].as_mv.row +
	mi->bmi[block1].as_mv[idx].as_mv.row),
	round_mv_comp_q2(mi->bmi[block0].as_mv[idx].as_mv.col +
	mi->bmi[block1].as_mv[idx].as_mv.col) };
	return res;
	}

	// TODO(jkoleszar): yet another mv clamping function :-(
	static INLINE MV clamp_mv_to_umv_border_sb(const MACROBLOCKD *xd,
	const MV *src_mv,
	int bw, int bh, int ss_x, int ss_y) {
	// If the MV points so far into the UMV border that no visible pixels
	// are used for reconstruction, the subpel part of the MV can be
	// discarded and the MV limited to 16 pixels with equivalent results.
	const int spel_left = (VP9_INTERP_EXTEND + bw) << SUBPEL_BITS;
	const int spel_right = spel_left - SUBPEL_SHIFTS;
	const int spel_top = (VP9_INTERP_EXTEND + bh) << SUBPEL_BITS;
	const int spel_bottom = spel_top - SUBPEL_SHIFTS;
	MV clamped_mv = {
	src_mv->row * (1 << (1 - ss_y)),
	src_mv->col * (1 << (1 - ss_x))
	};
	assert(ss_x <= 1);
	assert(ss_y <= 1);

	clamp_mv(&clamped_mv,
	xd->mb_to_left_edge * (1 << (1 - ss_x)) - spel_left,
	xd->mb_to_right_edge * (1 << (1 - ss_x)) + spel_right,
	xd->mb_to_top_edge * (1 << (1 - ss_y)) - spel_top,
	xd->mb_to_bottom_edge * (1 << (1 - ss_y)) + spel_bottom);

	return clamped_mv;
	}

	static INLINE MV average_split_mvs(const struct macroblockd_plane *pd,
	const MODE_INFO *mi, int ref, int block) {
	const int ss_idx = ((pd->subsampling_x > 0) << 1) \| (pd->subsampling_y > 0);
	MV res = {0, 0};
	switch (ss_idx) {
	case 0:
	res = mi->bmi[block].as_mv[ref].as_mv;
	break;
	case 1:
	res = mi_mv_pred_q2(mi, ref, block, block + 2);
	break;
	case 2:
	res = mi_mv_pred_q2(mi, ref, block, block + 1);
	break;
	case 3:
	res = mi_mv_pred_q4(mi, ref);
	break;
	default:
	assert(ss_idx <= 3 && ss_idx >= 0);
	}
	return res;
	}

	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);

	void vp10_build_inter_predictor_sub8x8(MACROBLOCKD *xd, int plane,
	int i, int ir, int ic,
	int mi_row, int mi_col);

	void vp10_build_inter_predictors_sby(MACROBLOCKD *xd, int mi_row, int mi_col,
	BLOCK_SIZE bsize);

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

	void vp10_build_inter_predictors_sbuv(MACROBLOCKD *xd, int mi_row, int mi_col,
	BLOCK_SIZE bsize);

	void vp10_build_inter_predictors_sb(MACROBLOCKD *xd, int mi_row, int mi_col,
	BLOCK_SIZE bsize);

	void vp10_build_inter_predictor(const uint8_t *src, int src_stride,
	uint8_t *dst, int dst_stride,
	const MV *mv_q3,
	const struct scale_factors *sf,
	int w, int h, int do_avg,
	const InterpKernel *kernel,
	enum mv_precision precision,
	int x, int y);

	#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 *mv_q3,
	const struct scale_factors *sf,
	int w, int h, int do_avg,
	const InterpKernel *kernel,
	enum mv_precision precision,
	int x, int y, int bd);
	#endif

	static INLINE int scaled_buffer_offset(int x_offset, int y_offset, int stride,
	const struct scale_factors *sf) {
	const int x = sf ? sf->scale_value_x(x_offset, sf) : x_offset;
	const int y = sf ? sf->scale_value_y(y_offset, sf) : y_offset;
	return y * stride + x;
	}

	static INLINE void setup_pred_plane(struct buf_2d *dst,
	uint8_t *src, int stride,
	int mi_row, int mi_col,
	const struct scale_factors *scale,
	int subsampling_x, int subsampling_y) {
	const int x = (MI_SIZE * mi_col) >> subsampling_x;
	const int y = (MI_SIZE * mi_row) >> subsampling_y;
	dst->buf = src + scaled_buffer_offset(x, y, stride, scale);
	dst->stride = stride;
	}

	void vp10_setup_dst_planes(struct macroblockd_plane planes[MAX_MB_PLANE],
	const YV12_BUFFER_CONFIG *src,
	int mi_row, int mi_col);

	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);

	#ifdef __cplusplus
	} // extern "C"
	#endif

	#endif // VP10_COMMON_RECONINTER_H_