ref: 3b14f94924987fc66302bb8b803ad9065816f93e
dir: dav1d/src/refmvs.h
/*
* Copyright © 2020, VideoLAN and dav1d authors
* Copyright © 2020, Two Orioles, LLC
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice, this
* list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
* ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef DAV1D_SRC_REF_MVS_H
#define DAV1D_SRC_REF_MVS_H
#include <stdint.h>
#include "dav1d/headers.h"
#include "common/intops.h"
#include "src/intra_edge.h"
#include "src/levels.h"
#include "src/tables.h"
#define INVALID_MV 0x80008000
typedef struct refmvs_temporal_block {
mv mv;
int8_t ref;
} refmvs_temporal_block;
typedef union refmvs_refpair {
int8_t ref[2]; // [0] = 0: intra=1, [1] = -1: comp=0
uint16_t pair;
} refmvs_refpair;
typedef union refmvs_mvpair {
mv mv[2];
uint64_t n;
} refmvs_mvpair;
typedef struct refmvs_block {
refmvs_mvpair mv;
refmvs_refpair ref;
uint8_t bs, mf; // 1 = globalmv+affine, 2 = newmv
} refmvs_block;
typedef struct refmvs_frame {
const Dav1dFrameHeader *frm_hdr;
int iw4, ih4, iw8, ih8;
int sbsz;
int use_ref_frame_mvs;
uint8_t sign_bias[7], mfmv_sign[7];
int8_t pocdiff[7];
uint8_t mfmv_ref[3];
int mfmv_ref2cur[3];
int mfmv_ref2ref[3][7];
int n_mfmvs;
refmvs_temporal_block *rp;
/*const*/ refmvs_temporal_block *const *rp_ref;
refmvs_temporal_block *rp_proj;
ptrdiff_t rp_stride;
refmvs_block *r; // 35 x r_stride memory
ptrdiff_t r_stride;
int n_tile_rows, n_tile_threads;
} refmvs_frame;
typedef struct refmvs_tile {
const refmvs_frame *rf;
refmvs_block *r[32 + 5];
refmvs_temporal_block *rp_proj;
struct {
int start, end;
} tile_col, tile_row;
} refmvs_tile;
typedef struct refmvs_candidate {
refmvs_mvpair mv;
int weight;
} refmvs_candidate;
// call once per frame thread
void dav1d_refmvs_init(refmvs_frame *rf);
void dav1d_refmvs_clear(refmvs_frame *rf);
// call once per frame
int dav1d_refmvs_init_frame(refmvs_frame *rf,
const Dav1dSequenceHeader *seq_hdr,
const Dav1dFrameHeader *frm_hdr,
const unsigned ref_poc[7],
refmvs_temporal_block *rp,
const unsigned ref_ref_poc[7][7],
/*const*/ refmvs_temporal_block *const rp_ref[7],
int n_tile_threads);
// initialize temporal MVs; this can be done in any configuration, e.g. one
// tile/sbrow at a time, where col_{start,end}8 are the tile boundaries; or
// it can just be for the whole frame's sbrow, where col_{start,end}8 are the
// frame boundaries. row_{start,end}8 are the superblock row boundaries.
void dav1d_refmvs_load_tmvs(const refmvs_frame *rf, int tile_row_idx,
int col_start8, int col_end8,
int row_start8, int row_end8);
// cache the current tile/sbrow (or frame/sbrow)'s projectable motion vectors
// into buffers for use in future frame's temporal MV prediction
void dav1d_refmvs_save_tmvs(const refmvs_tile *rt,
int col_start8, int col_end8,
int row_start8, int row_end8);
// initialize tile boundaries and refmvs_block pointers for one tile/sbrow
void dav1d_refmvs_tile_sbrow_init(refmvs_tile *rt, const refmvs_frame *rf,
int tile_col_start4, int tile_col_end4,
int tile_row_start4, int tile_row_end4,
int sby, int tile_row_idx);
// call for each block
void dav1d_refmvs_find(const refmvs_tile *rt,
refmvs_candidate mvstack[8], int *cnt,
int *ctx, const refmvs_refpair ref, enum BlockSize bs,
enum EdgeFlags edge_flags, int by4, int bx4);
static inline void splat_oneref_mv(refmvs_tile *const rt,
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];
refmvs_block **rr = &rt->r[(by4 & 31) + 5];
const refmvs_block tmpl = {
.ref = {.ref = { ref + 1, is_interintra ? 0 : -1 }},
.mv = {.mv = {mv}},
.bs = bs,
.mf = (mode == GLOBALMV && imin(bw4, bh4) >= 2) | ((mode == NEWMV) * 2),
};
do {
refmvs_block *r = *rr++ + bx4;
for (int x = 0; x < bw4; x++)
r[x] = tmpl;
} while (--bh4);
}
static inline void splat_intrabc_mv(refmvs_tile *const rt,
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];
refmvs_block **rr = &rt->r[(by4 & 31) + 5];
const refmvs_block tmpl = {
.ref = {.ref = { 0, -1 }},
.mv = {.mv = {mv}},
.bs = bs,
.mf = 0,
};
do {
refmvs_block *r = *rr++ + bx4;
for (int x = 0; x < bw4; x++) {
r[x] = tmpl;
}
} while (--bh4);
}
static inline void splat_tworef_mv(refmvs_tile *const rt,
const int by4, const int bx4,
const enum BlockSize bs,
const enum CompInterPredMode mode,
const refmvs_refpair ref,
const refmvs_mvpair mv)
{
const int bw4 = dav1d_block_dimensions[bs][0];
int bh4 = dav1d_block_dimensions[bs][1];
refmvs_block **rr = &rt->r[(by4 & 31) + 5];
assert(bw4 >= 2 && bh4 >= 2);
const refmvs_block tmpl = {
.ref = {.pair = ref.pair + 0x0101},
.mv = mv,
.bs = bs,
.mf = (mode == GLOBALMV_GLOBALMV) | !!((1 << mode) & (0xbc)) * 2,
};
do {
refmvs_block *r = *rr++ + bx4;
for (int x = 0; x < bw4; x++)
r[x] = tmpl;
} while (--bh4);
}
static inline void splat_intraref(refmvs_tile *const rt,
const int by4, const int bx4,
const enum BlockSize bs)
{
const int bw4 = dav1d_block_dimensions[bs][0];
int bh4 = dav1d_block_dimensions[bs][1];
refmvs_block **rr = &rt->r[(by4 & 31) + 5];
const refmvs_block tmpl = {
.ref = {.ref = { 0, -1 }},
.mv = {.n = INVALID_MV},
.bs = bs,
.mf = 0,
};
do {
refmvs_block *r = *rr++ + bx4;
for (int x = 0; x < bw4; x++) {
r[x] = tmpl;
}
} while (--bh4);
}
#endif /* DAV1D_SRC_REF_MVS_H */