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Diffstat (limited to 'third_party/dav1d/src/env.h')
| -rw-r--r-- | third_party/dav1d/src/env.h | 521 |
1 files changed, 521 insertions, 0 deletions
diff --git a/third_party/dav1d/src/env.h b/third_party/dav1d/src/env.h new file mode 100644 index 0000000000..7b91c4cab6 --- /dev/null +++ b/third_party/dav1d/src/env.h @@ -0,0 +1,521 @@ +/* + * Copyright © 2018, VideoLAN and dav1d authors + * Copyright © 2018, 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_ENV_H +#define DAV1D_SRC_ENV_H + +#include <stddef.h> +#include <stdint.h> +#include <stdlib.h> + +#include "src/levels.h" +#include "src/refmvs.h" +#include "src/tables.h" + +typedef struct BlockContext { + uint8_t ALIGN(mode[32], 8); + uint8_t ALIGN(lcoef[32], 8); + uint8_t ALIGN(ccoef[2][32], 8); + uint8_t ALIGN(seg_pred[32], 8); + uint8_t ALIGN(skip[32], 8); + uint8_t ALIGN(skip_mode[32], 8); + uint8_t ALIGN(intra[32], 8); + uint8_t ALIGN(comp_type[32], 8); + int8_t ALIGN(ref[2][32], 8); // -1 means intra + uint8_t ALIGN(filter[2][32], 8); // 3 means unset + int8_t ALIGN(tx_intra[32], 8); + int8_t ALIGN(tx[32], 8); + uint8_t ALIGN(tx_lpf_y[32], 8); + uint8_t ALIGN(tx_lpf_uv[32], 8); + uint8_t ALIGN(partition[16], 8); + uint8_t ALIGN(uvmode[32], 8); + uint8_t ALIGN(pal_sz[32], 8); +} BlockContext; + +static inline int get_intra_ctx(const BlockContext *const a, + const BlockContext *const l, + const int yb4, const int xb4, + const int have_top, const int have_left) +{ + if (have_left) { + if (have_top) { + const int ctx = l->intra[yb4] + a->intra[xb4]; + return ctx + (ctx == 2); + } else + return l->intra[yb4] * 2; + } else { + return have_top ? a->intra[xb4] * 2 : 0; + } +} + +static inline int get_tx_ctx(const BlockContext *const a, + const BlockContext *const l, + const TxfmInfo *const max_tx, + const int yb4, const int xb4) +{ + return (l->tx_intra[yb4] >= max_tx->lh) + (a->tx_intra[xb4] >= max_tx->lw); +} + +static inline int get_partition_ctx(const BlockContext *const a, + const BlockContext *const l, + const enum BlockLevel bl, + const int yb8, const int xb8) +{ + return ((a->partition[xb8] >> (4 - bl)) & 1) + + (((l->partition[yb8] >> (4 - bl)) & 1) << 1); +} + +static inline unsigned gather_left_partition_prob(const uint16_t *const in, + const enum BlockLevel bl) +{ + unsigned out = in[PARTITION_H - 1] - in[PARTITION_H]; + // Exploit the fact that cdfs for PARTITION_SPLIT, PARTITION_T_TOP_SPLIT, + // PARTITION_T_BOTTOM_SPLIT and PARTITION_T_LEFT_SPLIT are neighbors. + out += in[PARTITION_SPLIT - 1] - in[PARTITION_T_LEFT_SPLIT]; + if (bl != BL_128X128) + out += in[PARTITION_H4 - 1] - in[PARTITION_H4]; + return out; +} + +static inline unsigned gather_top_partition_prob(const uint16_t *const in, + const enum BlockLevel bl) +{ + // Exploit the fact that cdfs for PARTITION_V, PARTITION_SPLIT and + // PARTITION_T_TOP_SPLIT are neighbors. + unsigned out = in[PARTITION_V - 1] - in[PARTITION_T_TOP_SPLIT]; + // Exploit the facts that cdfs for PARTITION_T_LEFT_SPLIT and + // PARTITION_T_RIGHT_SPLIT are neighbors, the probability for + // PARTITION_V4 is always zero, and the probability for + // PARTITION_T_RIGHT_SPLIT is zero in 128x128 blocks. + out += in[PARTITION_T_LEFT_SPLIT - 1]; + if (bl != BL_128X128) + out += in[PARTITION_V4 - 1] - in[PARTITION_T_RIGHT_SPLIT]; + return out; +} + +static inline enum TxfmType get_uv_inter_txtp(const TxfmInfo *const uvt_dim, + const enum TxfmType ytxtp) +{ + if (uvt_dim->max == TX_32X32) + return ytxtp == IDTX ? IDTX : DCT_DCT; + if (uvt_dim->min == TX_16X16 && + ((1 << ytxtp) & ((1 << H_FLIPADST) | (1 << V_FLIPADST) | + (1 << H_ADST) | (1 << V_ADST)))) + { + return DCT_DCT; + } + + return ytxtp; +} + +static inline int get_filter_ctx(const BlockContext *const a, + const BlockContext *const l, + const int comp, const int dir, const int ref, + const int yb4, const int xb4) +{ + const int a_filter = (a->ref[0][xb4] == ref || a->ref[1][xb4] == ref) ? + a->filter[dir][xb4] : DAV1D_N_SWITCHABLE_FILTERS; + const int l_filter = (l->ref[0][yb4] == ref || l->ref[1][yb4] == ref) ? + l->filter[dir][yb4] : DAV1D_N_SWITCHABLE_FILTERS; + + if (a_filter == l_filter) { + return comp * 4 + a_filter; + } else if (a_filter == DAV1D_N_SWITCHABLE_FILTERS) { + return comp * 4 + l_filter; + } else if (l_filter == DAV1D_N_SWITCHABLE_FILTERS) { + return comp * 4 + a_filter; + } else { + return comp * 4 + DAV1D_N_SWITCHABLE_FILTERS; + } +} + +static inline int get_comp_ctx(const BlockContext *const a, + const BlockContext *const l, + const int yb4, const int xb4, + const int have_top, const int have_left) +{ + if (have_top) { + if (have_left) { + if (a->comp_type[xb4]) { + if (l->comp_type[yb4]) { + return 4; + } else { + // 4U means intra (-1) or bwd (>= 4) + return 2 + ((unsigned)l->ref[0][yb4] >= 4U); + } + } else if (l->comp_type[yb4]) { + // 4U means intra (-1) or bwd (>= 4) + return 2 + ((unsigned)a->ref[0][xb4] >= 4U); + } else { + return (l->ref[0][yb4] >= 4) ^ (a->ref[0][xb4] >= 4); + } + } else { + return a->comp_type[xb4] ? 3 : a->ref[0][xb4] >= 4; + } + } else if (have_left) { + return l->comp_type[yb4] ? 3 : l->ref[0][yb4] >= 4; + } else { + return 1; + } +} + +static inline int get_comp_dir_ctx(const BlockContext *const a, + const BlockContext *const l, + const int yb4, const int xb4, + const int have_top, const int have_left) +{ +#define has_uni_comp(edge, off) \ + ((edge->ref[0][off] < 4) == (edge->ref[1][off] < 4)) + + if (have_top && have_left) { + const int a_intra = a->intra[xb4], l_intra = l->intra[yb4]; + + if (a_intra && l_intra) return 2; + if (a_intra || l_intra) { + const BlockContext *const edge = a_intra ? l : a; + const int off = a_intra ? yb4 : xb4; + + if (edge->comp_type[off] == COMP_INTER_NONE) return 2; + return 1 + 2 * has_uni_comp(edge, off); + } + + const int a_comp = a->comp_type[xb4] != COMP_INTER_NONE; + const int l_comp = l->comp_type[yb4] != COMP_INTER_NONE; + const int a_ref0 = a->ref[0][xb4], l_ref0 = l->ref[0][yb4]; + + if (!a_comp && !l_comp) { + return 1 + 2 * ((a_ref0 >= 4) == (l_ref0 >= 4)); + } else if (!a_comp || !l_comp) { + const BlockContext *const edge = a_comp ? a : l; + const int off = a_comp ? xb4 : yb4; + + if (!has_uni_comp(edge, off)) return 1; + return 3 + ((a_ref0 >= 4) == (l_ref0 >= 4)); + } else { + const int a_uni = has_uni_comp(a, xb4), l_uni = has_uni_comp(l, yb4); + + if (!a_uni && !l_uni) return 0; + if (!a_uni || !l_uni) return 2; + return 3 + ((a_ref0 == 4) == (l_ref0 == 4)); + } + } else if (have_top || have_left) { + const BlockContext *const edge = have_left ? l : a; + const int off = have_left ? yb4 : xb4; + + if (edge->intra[off]) return 2; + if (edge->comp_type[off] == COMP_INTER_NONE) return 2; + return 4 * has_uni_comp(edge, off); + } else { + return 2; + } +} + +static inline int get_poc_diff(const int order_hint_n_bits, + const int poc0, const int poc1) +{ + if (!order_hint_n_bits) return 0; + const int mask = 1 << (order_hint_n_bits - 1); + const int diff = poc0 - poc1; + return (diff & (mask - 1)) - (diff & mask); +} + +static inline int get_jnt_comp_ctx(const int order_hint_n_bits, + const unsigned poc, const unsigned ref0poc, + const unsigned ref1poc, + const BlockContext *const a, + const BlockContext *const l, + const int yb4, const int xb4) +{ + const unsigned d0 = abs(get_poc_diff(order_hint_n_bits, ref0poc, poc)); + const unsigned d1 = abs(get_poc_diff(order_hint_n_bits, poc, ref1poc)); + const int offset = d0 == d1; + const int a_ctx = a->comp_type[xb4] >= COMP_INTER_AVG || + a->ref[0][xb4] == 6; + const int l_ctx = l->comp_type[yb4] >= COMP_INTER_AVG || + l->ref[0][yb4] == 6; + + return 3 * offset + a_ctx + l_ctx; +} + +static inline int get_mask_comp_ctx(const BlockContext *const a, + const BlockContext *const l, + const int yb4, const int xb4) +{ + const int a_ctx = a->comp_type[xb4] >= COMP_INTER_SEG ? 1 : + a->ref[0][xb4] == 6 ? 3 : 0; + const int l_ctx = l->comp_type[yb4] >= COMP_INTER_SEG ? 1 : + l->ref[0][yb4] == 6 ? 3 : 0; + + return imin(a_ctx + l_ctx, 5); +} + +#define av1_get_ref_2_ctx av1_get_bwd_ref_ctx +#define av1_get_ref_3_ctx av1_get_fwd_ref_ctx +#define av1_get_ref_4_ctx av1_get_fwd_ref_1_ctx +#define av1_get_ref_5_ctx av1_get_fwd_ref_2_ctx +#define av1_get_ref_6_ctx av1_get_bwd_ref_1_ctx +#define av1_get_uni_p_ctx av1_get_ref_ctx +#define av1_get_uni_p2_ctx av1_get_fwd_ref_2_ctx + +static inline int av1_get_ref_ctx(const BlockContext *const a, + const BlockContext *const l, + const int yb4, const int xb4, + int have_top, int have_left) +{ + int cnt[2] = { 0 }; + + if (have_top && !a->intra[xb4]) { + cnt[a->ref[0][xb4] >= 4]++; + if (a->comp_type[xb4]) cnt[a->ref[1][xb4] >= 4]++; + } + + if (have_left && !l->intra[yb4]) { + cnt[l->ref[0][yb4] >= 4]++; + if (l->comp_type[yb4]) cnt[l->ref[1][yb4] >= 4]++; + } + + return cnt[0] == cnt[1] ? 1 : cnt[0] < cnt[1] ? 0 : 2; +} + +static inline int av1_get_fwd_ref_ctx(const BlockContext *const a, + const BlockContext *const l, + const int yb4, const int xb4, + const int have_top, const int have_left) +{ + int cnt[4] = { 0 }; + + if (have_top && !a->intra[xb4]) { + if (a->ref[0][xb4] < 4) cnt[a->ref[0][xb4]]++; + if (a->comp_type[xb4] && a->ref[1][xb4] < 4) cnt[a->ref[1][xb4]]++; + } + + if (have_left && !l->intra[yb4]) { + if (l->ref[0][yb4] < 4) cnt[l->ref[0][yb4]]++; + if (l->comp_type[yb4] && l->ref[1][yb4] < 4) cnt[l->ref[1][yb4]]++; + } + + cnt[0] += cnt[1]; + cnt[2] += cnt[3]; + + return cnt[0] == cnt[2] ? 1 : cnt[0] < cnt[2] ? 0 : 2; +} + +static inline int av1_get_fwd_ref_1_ctx(const BlockContext *const a, + const BlockContext *const l, + const int yb4, const int xb4, + const int have_top, const int have_left) +{ + int cnt[2] = { 0 }; + + if (have_top && !a->intra[xb4]) { + if (a->ref[0][xb4] < 2) cnt[a->ref[0][xb4]]++; + if (a->comp_type[xb4] && a->ref[1][xb4] < 2) cnt[a->ref[1][xb4]]++; + } + + if (have_left && !l->intra[yb4]) { + if (l->ref[0][yb4] < 2) cnt[l->ref[0][yb4]]++; + if (l->comp_type[yb4] && l->ref[1][yb4] < 2) cnt[l->ref[1][yb4]]++; + } + + return cnt[0] == cnt[1] ? 1 : cnt[0] < cnt[1] ? 0 : 2; +} + +static inline int av1_get_fwd_ref_2_ctx(const BlockContext *const a, + const BlockContext *const l, + const int yb4, const int xb4, + const int have_top, const int have_left) +{ + int cnt[2] = { 0 }; + + if (have_top && !a->intra[xb4]) { + if ((a->ref[0][xb4] ^ 2U) < 2) cnt[a->ref[0][xb4] - 2]++; + if (a->comp_type[xb4] && (a->ref[1][xb4] ^ 2U) < 2) cnt[a->ref[1][xb4] - 2]++; + } + + if (have_left && !l->intra[yb4]) { + if ((l->ref[0][yb4] ^ 2U) < 2) cnt[l->ref[0][yb4] - 2]++; + if (l->comp_type[yb4] && (l->ref[1][yb4] ^ 2U) < 2) cnt[l->ref[1][yb4] - 2]++; + } + + return cnt[0] == cnt[1] ? 1 : cnt[0] < cnt[1] ? 0 : 2; +} + +static inline int av1_get_bwd_ref_ctx(const BlockContext *const a, + const BlockContext *const l, + const int yb4, const int xb4, + const int have_top, const int have_left) +{ + int cnt[3] = { 0 }; + + if (have_top && !a->intra[xb4]) { + if (a->ref[0][xb4] >= 4) cnt[a->ref[0][xb4] - 4]++; + if (a->comp_type[xb4] && a->ref[1][xb4] >= 4) cnt[a->ref[1][xb4] - 4]++; + } + + if (have_left && !l->intra[yb4]) { + if (l->ref[0][yb4] >= 4) cnt[l->ref[0][yb4] - 4]++; + if (l->comp_type[yb4] && l->ref[1][yb4] >= 4) cnt[l->ref[1][yb4] - 4]++; + } + + cnt[1] += cnt[0]; + + return cnt[2] == cnt[1] ? 1 : cnt[1] < cnt[2] ? 0 : 2; +} + +static inline int av1_get_bwd_ref_1_ctx(const BlockContext *const a, + const BlockContext *const l, + const int yb4, const int xb4, + const int have_top, const int have_left) +{ + int cnt[3] = { 0 }; + + if (have_top && !a->intra[xb4]) { + if (a->ref[0][xb4] >= 4) cnt[a->ref[0][xb4] - 4]++; + if (a->comp_type[xb4] && a->ref[1][xb4] >= 4) cnt[a->ref[1][xb4] - 4]++; + } + + if (have_left && !l->intra[yb4]) { + if (l->ref[0][yb4] >= 4) cnt[l->ref[0][yb4] - 4]++; + if (l->comp_type[yb4] && l->ref[1][yb4] >= 4) cnt[l->ref[1][yb4] - 4]++; + } + + return cnt[0] == cnt[1] ? 1 : cnt[0] < cnt[1] ? 0 : 2; +} + +static inline int av1_get_uni_p1_ctx(const BlockContext *const a, + const BlockContext *const l, + const int yb4, const int xb4, + const int have_top, const int have_left) +{ + int cnt[3] = { 0 }; + + if (have_top && !a->intra[xb4]) { + if (a->ref[0][xb4] - 1U < 3) cnt[a->ref[0][xb4] - 1]++; + if (a->comp_type[xb4] && a->ref[1][xb4] - 1U < 3) cnt[a->ref[1][xb4] - 1]++; + } + + if (have_left && !l->intra[yb4]) { + if (l->ref[0][yb4] - 1U < 3) cnt[l->ref[0][yb4] - 1]++; + if (l->comp_type[yb4] && l->ref[1][yb4] - 1U < 3) cnt[l->ref[1][yb4] - 1]++; + } + + cnt[1] += cnt[2]; + + return cnt[0] == cnt[1] ? 1 : cnt[0] < cnt[1] ? 0 : 2; +} + +static inline int get_drl_context(const refmvs_candidate *const ref_mv_stack, + const int ref_idx) +{ + if (ref_mv_stack[ref_idx].weight >= 640) + return ref_mv_stack[ref_idx + 1].weight < 640; + + return ref_mv_stack[ref_idx + 1].weight < 640 ? 2 : 0; +} + +static inline unsigned get_cur_frame_segid(const int by, const int bx, + const int have_top, + const int have_left, + int *const seg_ctx, + const uint8_t *cur_seg_map, + const ptrdiff_t stride) +{ + cur_seg_map += bx + by * stride; + if (have_left && have_top) { + const int l = cur_seg_map[-1]; + const int a = cur_seg_map[-stride]; + const int al = cur_seg_map[-(stride + 1)]; + + if (l == a && al == l) *seg_ctx = 2; + else if (l == a || al == l || a == al) *seg_ctx = 1; + else *seg_ctx = 0; + return a == al ? a : l; + } else { + *seg_ctx = 0; + return have_left ? cur_seg_map[-1] : have_top ? cur_seg_map[-stride] : 0; + } +} + +static inline void fix_int_mv_precision(mv *const mv) { + mv->x = (mv->x - (mv->x >> 15) + 3) & ~7U; + mv->y = (mv->y - (mv->y >> 15) + 3) & ~7U; +} + +static inline void fix_mv_precision(const Dav1dFrameHeader *const hdr, + mv *const mv) +{ + if (hdr->force_integer_mv) { + fix_int_mv_precision(mv); + } else if (!hdr->hp) { + mv->x = (mv->x - (mv->x >> 15)) & ~1U; + mv->y = (mv->y - (mv->y >> 15)) & ~1U; + } +} + +static inline mv get_gmv_2d(const Dav1dWarpedMotionParams *const gmv, + const int bx4, const int by4, + const int bw4, const int bh4, + const Dav1dFrameHeader *const hdr) +{ + switch (gmv->type) { + case DAV1D_WM_TYPE_ROT_ZOOM: + assert(gmv->matrix[5] == gmv->matrix[2]); + assert(gmv->matrix[4] == -gmv->matrix[3]); + // fall-through + default: + case DAV1D_WM_TYPE_AFFINE: { + const int x = bx4 * 4 + bw4 * 2 - 1; + const int y = by4 * 4 + bh4 * 2 - 1; + const int xc = (gmv->matrix[2] - (1 << 16)) * x + + gmv->matrix[3] * y + gmv->matrix[0]; + const int yc = (gmv->matrix[5] - (1 << 16)) * y + + gmv->matrix[4] * x + gmv->matrix[1]; + const int shift = 16 - (3 - !hdr->hp); + const int round = (1 << shift) >> 1; + mv res = (mv) { + .y = apply_sign(((abs(yc) + round) >> shift) << !hdr->hp, yc), + .x = apply_sign(((abs(xc) + round) >> shift) << !hdr->hp, xc), + }; + if (hdr->force_integer_mv) + fix_int_mv_precision(&res); + return res; + } + case DAV1D_WM_TYPE_TRANSLATION: { + mv res = (mv) { + .y = gmv->matrix[0] >> 13, + .x = gmv->matrix[1] >> 13, + }; + if (hdr->force_integer_mv) + fix_int_mv_precision(&res); + return res; + } + case DAV1D_WM_TYPE_IDENTITY: + return (mv) { .x = 0, .y = 0 }; + } +} + +#endif /* DAV1D_SRC_ENV_H */ |