ref: ba789ebfb4f6de6f478722d34114a18c8c9bb5c7
dir: /src/ref_mvs.h/
/*
* Copyright (c) 2001-2016, Alliance for Open Media. All rights reserved
*
* This source code is subject to the terms of the BSD 2 Clause License and
* the Alliance for Open Media Patent License 1.0. If the BSD 2 Clause License
* was not distributed with this source code in the LICENSE file, you can
* obtain it at www.aomedia.org/license/software. If the Alliance for Open
* 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.
*/
#ifndef __DAV1D_SRC_REF_MVS_H__
#define __DAV1D_SRC_REF_MVS_H__
#include <stddef.h>
#include "src/levels.h"
#include "src/tables.h"
typedef struct refmvs {
mv mv[2];
int8_t ref[2]; // [0] = 0: intra=1, [1] = -1: comp=0
int8_t mode, sb_type;
} refmvs;
typedef struct candidate_mv {
mv this_mv;
mv comp_mv;
int weight;
} candidate_mv;
typedef struct AV1_COMMON AV1_COMMON;
// call once per frame thread
AV1_COMMON *av1_alloc_ref_mv_common(void);
void av1_free_ref_mv_common(AV1_COMMON *cm);
// call once per frame
int av1_init_ref_mv_common(AV1_COMMON *cm,
int w8, int h8,
ptrdiff_t stride,
int allow_sb128,
refmvs *cur,
refmvs *ref_mvs[7],
unsigned cur_poc,
const unsigned ref_poc[7],
const unsigned ref_ref_poc[7][7],
const WarpedMotionParams gmv[7],
int allow_hp, int force_int_mv,
int allow_ref_frame_mvs, int order_hint);
// call for start of each sbrow per tile
void av1_init_ref_mv_tile_row(AV1_COMMON *cm,
int tile_col_start4, int tile_col_end4,
int row_start4, int row_end4);
// call for each block
void av1_find_ref_mvs(candidate_mv *mvstack, int *cnt, mv (*mvlist)[2],
int *ctx, int refidx[2], int w4, int h4,
enum BlockSize bs, enum BlockPartition bp,
int by4, int bx4, int tile_col_start4,
int tile_col_end4, int tile_row_start4,
int tile_row_end4, AV1_COMMON *cm);
extern const uint8_t bs_to_sbtype[];
extern const uint8_t sbtype_to_bs[];
static inline void splat_oneref_mv(refmvs *r, const ptrdiff_t stride,
const int by4, const int bx4,
const enum BlockSize bs,
const enum InterPredMode mode,
const int ref, const mv mv,
const int is_interintra)
{
const int bw4 = dav1d_block_dimensions[bs][0];
int bh4 = dav1d_block_dimensions[bs][1];
r += by4 * stride + bx4;
const refmvs tmpl = (refmvs) {
.ref = { ref + 1, is_interintra ? 0 : -1 },
.mv = { mv },
.sb_type = bs_to_sbtype[bs],
.mode = N_INTRA_PRED_MODES + mode,
};
do {
for (int x = 0; x < bw4; x++)
r[x] = tmpl;
r += stride;
} while (--bh4);
}
static inline void splat_intrabc_mv(refmvs *r, const ptrdiff_t stride,
const int by4, const int bx4,
const enum BlockSize bs, const mv mv)
{
const int bw4 = dav1d_block_dimensions[bs][0];
int bh4 = dav1d_block_dimensions[bs][1];
r += by4 * stride + bx4;
const refmvs tmpl = (refmvs) {
.ref = { 0, -1 },
.mv = { mv },
.sb_type = bs_to_sbtype[bs],
.mode = DC_PRED,
};
do {
for (int x = 0; x < bw4; x++)
r[x] = tmpl;
r += stride;
} while (--bh4);
}
static inline void splat_tworef_mv(refmvs *r, const ptrdiff_t stride,
const int by4, const int bx4,
const enum BlockSize bs,
const enum CompInterPredMode mode,
const int ref1, const int ref2,
const mv mv1, const mv mv2)
{
const int bw4 = dav1d_block_dimensions[bs][0];
int bh4 = dav1d_block_dimensions[bs][1];
r += by4 * stride + bx4;
const refmvs tmpl = (refmvs) {
.ref = { ref1 + 1, ref2 + 1 },
.mv = { mv1, mv2 },
.sb_type = bs_to_sbtype[bs],
.mode = N_INTRA_PRED_MODES + N_INTER_PRED_MODES + mode,
};
do {
for (int x = 0; x < bw4; x++)
r[x] = tmpl;
r += stride;
} while (--bh4);
}
static inline void splat_intraref(refmvs *r, const ptrdiff_t stride,
const int by4, const int bx4,
const enum BlockSize bs,
const enum IntraPredMode mode)
{
const int bw4 = dav1d_block_dimensions[bs][0];
int bh4 = dav1d_block_dimensions[bs][1];
r += by4 * stride + bx4;
do {
int x;
for (x = 0; x < bw4; x++)
r[x] = (refmvs) {
.ref = { 0, -1 },
.mv = { [0] = { .y = -0x8000, .x = -0x8000 }, },
.sb_type = bs_to_sbtype[bs],
.mode = mode,
};
r += stride;
} while (--bh4);
}
static inline void fix_mv_precision(const Av1FrameHeader *const hdr,
mv *const mv)
{
if (hdr->force_integer_mv) {
const int xmod = mv->x & 7;
mv->x &= ~7;
mv->x += (xmod > 4 - (mv->x < 0)) << 3;
const int ymod = mv->y & 7;
mv->y &= ~7;
mv->y += (ymod > 4 - (mv->y < 0)) << 3;
} else if (!hdr->hp) {
if (mv->x & 1) {
if (mv->x < 0) mv->x++;
else mv->x--;
}
if (mv->y & 1) {
if (mv->y < 0) mv->y++;
else mv->y--;
}
}
}
static inline mv av1_clamp_mv(const mv mv,
const int bx4, const int by4,
const int bw4, const int bh4,
const int iw4, const int ih4)
{
const int left = -(bx4 + bw4 + 4) * 4 * 8;
const int right = (iw4 - bx4 + 0 * bw4 + 4) * 4 * 8;
const int top = -(by4 + bh4 + 4) * 4 * 8;
const int bottom = (ih4 - by4 + 0 * bh4 + 4) * 4 * 8;
return (struct mv) { .x = iclip(mv.x, left, right),
.y = iclip(mv.y, top, bottom) };
}
#endif /* __DAV1D_SRC_REF_MVS_H__ */