From 72ca830f511fcdc01253689615faed25da7c57bf Mon Sep 17 00:00:00 2001 From: "Ronald S. Bultje" Date: Mon, 30 Sep 2013 23:03:30 -0400 Subject: lavc: VP9 decoder MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Originally written by Ronald S. Bultje and Clément Bœsch Further contributions by: Anton Khirnov Diego Biurrun Luca Barbato Martin Storsjö Signed-off-by: Luca Barbato Signed-off-by: Anton Khirnov --- libavcodec/vp9block.c | 1684 +++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 1684 insertions(+) create mode 100644 libavcodec/vp9block.c (limited to 'libavcodec/vp9block.c') diff --git a/libavcodec/vp9block.c b/libavcodec/vp9block.c new file mode 100644 index 0000000000..e6865934c4 --- /dev/null +++ b/libavcodec/vp9block.c @@ -0,0 +1,1684 @@ +/* + * VP9 compatible video decoder + * + * Copyright (C) 2013 Ronald S. Bultje + * Copyright (C) 2013 Clément Bœsch + * + * This file is part of Libav. + * + * Libav is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * Libav is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with Libav; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA + */ + +#include "libavutil/avassert.h" + +#include "avcodec.h" +#include "get_bits.h" +#include "internal.h" +#include "videodsp.h" +#include "vp56.h" +#include "vp9.h" +#include "vp9data.h" + +static const uint8_t bwh_tab[2][N_BS_SIZES][2] = { + { + { 16, 16 }, { 16, 8 }, { 8, 16 }, { 8, 8 }, { 8, 4 }, { 4, 8 }, + { 4, 4 }, { 4, 2 }, { 2, 4 }, { 2, 2 }, { 2, 1 }, { 1, 2 }, { 1, 1 }, + }, { + { 8, 8 }, { 8, 4 }, { 4, 8 }, { 4, 4 }, { 4, 2 }, { 2, 4 }, + { 2, 2 }, { 2, 1 }, { 1, 2 }, { 1, 1 }, { 1, 1 }, { 1, 1 }, { 1, 1 }, + } +}; + +// differential forward probability updates +static void decode_mode(VP9Context *s, VP9Block *const b) +{ + static const uint8_t left_ctx[N_BS_SIZES] = { + 0x0, 0x8, 0x0, 0x8, 0xc, 0x8, 0xc, 0xe, 0xc, 0xe, 0xf, 0xe, 0xf + }; + static const uint8_t above_ctx[N_BS_SIZES] = { + 0x0, 0x0, 0x8, 0x8, 0x8, 0xc, 0xc, 0xc, 0xe, 0xe, 0xe, 0xf, 0xf + }; + static const uint8_t max_tx_for_bl_bp[N_BS_SIZES] = { + TX_32X32, TX_32X32, TX_32X32, TX_32X32, TX_16X16, TX_16X16, + TX_16X16, TX_8X8, TX_8X8, TX_8X8, TX_4X4, TX_4X4, TX_4X4 + }; + int row = b->row, col = b->col, row7 = b->row7; + enum TxfmMode max_tx = max_tx_for_bl_bp[b->bs]; + int w4 = FFMIN(s->cols - col, bwh_tab[1][b->bs][0]); + int h4 = FFMIN(s->rows - row, bwh_tab[1][b->bs][1]); + int have_a = row > 0, have_l = col > s->tiling.tile_col_start; + int y; + + if (!s->segmentation.enabled) { + b->seg_id = 0; + } else if (s->keyframe || s->intraonly) { + b->seg_id = s->segmentation.update_map ? + vp8_rac_get_tree(&s->c, ff_vp9_segmentation_tree, s->prob.seg) : 0; + } else if (!s->segmentation.update_map || + (s->segmentation.temporal && + vp56_rac_get_prob_branchy(&s->c, + s->prob.segpred[s->above_segpred_ctx[col] + + s->left_segpred_ctx[row7]]))) { + int pred = 8, x; + + for (y = 0; y < h4; y++) + for (x = 0; x < w4; x++) + pred = FFMIN(pred, + s->segmentation_map[(y + row) * 8 * s->sb_cols + x + col]); + b->seg_id = pred; + + memset(&s->above_segpred_ctx[col], 1, w4); + memset(&s->left_segpred_ctx[row7], 1, h4); + } else { + b->seg_id = vp8_rac_get_tree(&s->c, ff_vp9_segmentation_tree, + s->prob.seg); + + memset(&s->above_segpred_ctx[col], 0, w4); + memset(&s->left_segpred_ctx[row7], 0, h4); + } + if ((s->segmentation.enabled && s->segmentation.update_map) || s->keyframe) { + for (y = 0; y < h4; y++) + memset(&s->segmentation_map[(y + row) * 8 * s->sb_cols + col], + b->seg_id, w4); + } + + b->skip = s->segmentation.enabled && + s->segmentation.feat[b->seg_id].skip_enabled; + if (!b->skip) { + int c = s->left_skip_ctx[row7] + s->above_skip_ctx[col]; + b->skip = vp56_rac_get_prob(&s->c, s->prob.p.skip[c]); + s->counts.skip[c][b->skip]++; + } + + if (s->keyframe || s->intraonly) { + b->intra = 1; + } else if (s->segmentation.feat[b->seg_id].ref_enabled) { + b->intra = !s->segmentation.feat[b->seg_id].ref_val; + } else { + int c, bit; + + if (have_a && have_l) { + c = s->above_intra_ctx[col] + s->left_intra_ctx[row7]; + c += (c == 2); + } else { + c = have_a ? 2 * s->above_intra_ctx[col] : + have_l ? 2 * s->left_intra_ctx[row7] : 0; + } + bit = vp56_rac_get_prob(&s->c, s->prob.p.intra[c]); + s->counts.intra[c][bit]++; + b->intra = !bit; + } + + if ((b->intra || !b->skip) && s->txfmmode == TX_SWITCHABLE) { + int c; + if (have_a) { + if (have_l) { + c = (s->above_skip_ctx[col] ? max_tx : + s->above_txfm_ctx[col]) + + (s->left_skip_ctx[row7] ? max_tx : + s->left_txfm_ctx[row7]) > max_tx; + } else { + c = s->above_skip_ctx[col] ? 1 : + (s->above_txfm_ctx[col] * 2 > max_tx); + } + } else if (have_l) { + c = s->left_skip_ctx[row7] ? 1 : + (s->left_txfm_ctx[row7] * 2 > max_tx); + } else { + c = 1; + } + switch (max_tx) { + case TX_32X32: + b->tx = vp56_rac_get_prob(&s->c, s->prob.p.tx32p[c][0]); + if (b->tx) { + b->tx += vp56_rac_get_prob(&s->c, s->prob.p.tx32p[c][1]); + if (b->tx == 2) + b->tx += vp56_rac_get_prob(&s->c, s->prob.p.tx32p[c][2]); + } + s->counts.tx32p[c][b->tx]++; + break; + case TX_16X16: + b->tx = vp56_rac_get_prob(&s->c, s->prob.p.tx16p[c][0]); + if (b->tx) + b->tx += vp56_rac_get_prob(&s->c, s->prob.p.tx16p[c][1]); + s->counts.tx16p[c][b->tx]++; + break; + case TX_8X8: + b->tx = vp56_rac_get_prob(&s->c, s->prob.p.tx8p[c]); + s->counts.tx8p[c][b->tx]++; + break; + case TX_4X4: + b->tx = TX_4X4; + break; + } + } else { + b->tx = FFMIN(max_tx, s->txfmmode); + } + + if (s->keyframe || s->intraonly) { + uint8_t *a = &s->above_mode_ctx[col * 2]; + uint8_t *l = &s->left_mode_ctx[(row7) << 1]; + + b->comp = 0; + if (b->bs > BS_8x8) { + // FIXME the memory storage intermediates here aren't really + // necessary, they're just there to make the code slightly + // simpler for now + b->mode[0] = + a[0] = vp8_rac_get_tree(&s->c, ff_vp9_intramode_tree, + ff_vp9_default_kf_ymode_probs[a[0]][l[0]]); + if (b->bs != BS_8x4) { + b->mode[1] = vp8_rac_get_tree(&s->c, ff_vp9_intramode_tree, + ff_vp9_default_kf_ymode_probs[a[1]][b->mode[0]]); + l[0] = + a[1] = b->mode[1]; + } else { + l[0] = + a[1] = + b->mode[1] = b->mode[0]; + } + if (b->bs != BS_4x8) { + b->mode[2] = + a[0] = vp8_rac_get_tree(&s->c, ff_vp9_intramode_tree, + ff_vp9_default_kf_ymode_probs[a[0]][l[1]]); + if (b->bs != BS_8x4) { + b->mode[3] = vp8_rac_get_tree(&s->c, ff_vp9_intramode_tree, + ff_vp9_default_kf_ymode_probs[a[1]][b->mode[2]]); + l[1] = + a[1] = b->mode[3]; + } else { + l[1] = + a[1] = + b->mode[3] = b->mode[2]; + } + } else { + b->mode[2] = b->mode[0]; + l[1] = + a[1] = + b->mode[3] = b->mode[1]; + } + } else { + b->mode[0] = vp8_rac_get_tree(&s->c, ff_vp9_intramode_tree, + ff_vp9_default_kf_ymode_probs[*a][*l]); + b->mode[3] = + b->mode[2] = + b->mode[1] = b->mode[0]; + // FIXME this can probably be optimized + memset(a, b->mode[0], bwh_tab[0][b->bs][0]); + memset(l, b->mode[0], bwh_tab[0][b->bs][1]); + } + b->uvmode = vp8_rac_get_tree(&s->c, ff_vp9_intramode_tree, + ff_vp9_default_kf_uvmode_probs[b->mode[3]]); + } else if (b->intra) { + b->comp = 0; + if (b->bs > BS_8x8) { + b->mode[0] = vp8_rac_get_tree(&s->c, ff_vp9_intramode_tree, + s->prob.p.y_mode[0]); + s->counts.y_mode[0][b->mode[0]]++; + if (b->bs != BS_8x4) { + b->mode[1] = vp8_rac_get_tree(&s->c, ff_vp9_intramode_tree, + s->prob.p.y_mode[0]); + s->counts.y_mode[0][b->mode[1]]++; + } else { + b->mode[1] = b->mode[0]; + } + if (b->bs != BS_4x8) { + b->mode[2] = vp8_rac_get_tree(&s->c, ff_vp9_intramode_tree, + s->prob.p.y_mode[0]); + s->counts.y_mode[0][b->mode[2]]++; + if (b->bs != BS_8x4) { + b->mode[3] = vp8_rac_get_tree(&s->c, ff_vp9_intramode_tree, + s->prob.p.y_mode[0]); + s->counts.y_mode[0][b->mode[3]]++; + } else { + b->mode[3] = b->mode[2]; + } + } else { + b->mode[2] = b->mode[0]; + b->mode[3] = b->mode[1]; + } + } else { + static const uint8_t size_group[10] = { + 3, 3, 3, 3, 2, 2, 2, 1, 1, 1 + }; + int sz = size_group[b->bs]; + + b->mode[0] = vp8_rac_get_tree(&s->c, ff_vp9_intramode_tree, + s->prob.p.y_mode[sz]); + b->mode[1] = + b->mode[2] = + b->mode[3] = b->mode[0]; + s->counts.y_mode[sz][b->mode[3]]++; + } + b->uvmode = vp8_rac_get_tree(&s->c, ff_vp9_intramode_tree, + s->prob.p.uv_mode[b->mode[3]]); + s->counts.uv_mode[b->mode[3]][b->uvmode]++; + } else { + static const uint8_t inter_mode_ctx_lut[14][14] = { + { 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5 }, + { 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5 }, + { 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5 }, + { 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5 }, + { 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5 }, + { 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5 }, + { 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5 }, + { 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5 }, + { 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5 }, + { 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5 }, + { 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 2, 2, 1, 3 }, + { 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 2, 2, 1, 3 }, + { 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 0, 3 }, + { 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 3, 4 }, + }; + + if (s->segmentation.feat[b->seg_id].ref_enabled) { + av_assert2(s->segmentation.feat[b->seg_id].ref_val != 0); + b->comp = 0; + b->ref[0] = s->segmentation.feat[b->seg_id].ref_val - 1; + } else { + // read comp_pred flag + if (s->comppredmode != PRED_SWITCHABLE) { + b->comp = s->comppredmode == PRED_COMPREF; + } else { + int c; + + // FIXME add intra as ref=0xff (or -1) to make these easier? + if (have_a) { + if (have_l) { + if (s->above_comp_ctx[col] && s->left_comp_ctx[row7]) { + c = 4; + } else if (s->above_comp_ctx[col]) { + c = 2 + (s->left_intra_ctx[row7] || + s->left_ref_ctx[row7] == s->fixcompref); + } else if (s->left_comp_ctx[row7]) { + c = 2 + (s->above_intra_ctx[col] || + s->above_ref_ctx[col] == s->fixcompref); + } else { + c = (!s->above_intra_ctx[col] && + s->above_ref_ctx[col] == s->fixcompref) ^ + (!s->left_intra_ctx[row7] && + s->left_ref_ctx[row & 7] == s->fixcompref); + } + } else { + c = s->above_comp_ctx[col] ? 3 : + (!s->above_intra_ctx[col] && s->above_ref_ctx[col] == s->fixcompref); + } + } else if (have_l) { + c = s->left_comp_ctx[row7] ? 3 : + (!s->left_intra_ctx[row7] && s->left_ref_ctx[row7] == s->fixcompref); + } else { + c = 1; + } + b->comp = vp56_rac_get_prob(&s->c, s->prob.p.comp[c]); + s->counts.comp[c][b->comp]++; + } + + // read actual references + // FIXME probably cache a few variables here to prevent repetitive + // memory accesses below + if (b->comp) { /* two references */ + int fix_idx = s->signbias[s->fixcompref], var_idx = !fix_idx, c, bit; + + b->ref[fix_idx] = s->fixcompref; + // FIXME can this codeblob be replaced by some sort of LUT? + if (have_a) { + if (have_l) { + if (s->above_intra_ctx[col]) { + if (s->left_intra_ctx[row7]) { + c = 2; + } else { + c = 1 + 2 * (s->left_ref_ctx[row7] != s->varcompref[1]); + } + } else if (s->left_intra_ctx[row7]) { + c = 1 + 2 * (s->above_ref_ctx[col] != s->varcompref[1]); + } else { + int refl = s->left_ref_ctx[row7], refa = s->above_ref_ctx[col]; + + if (refl == refa && refa == s->varcompref[1]) { + c = 0; + } else if (!s->left_comp_ctx[row7] && !s->above_comp_ctx[col]) { + if ((refa == s->fixcompref && refl == s->varcompref[0]) || + (refl == s->fixcompref && refa == s->varcompref[0])) { + c = 4; + } else { + c = (refa == refl) ? 3 : 1; + } + } else if (!s->left_comp_ctx[row7]) { + if (refa == s->varcompref[1] && refl != s->varcompref[1]) { + c = 1; + } else { + c = (refl == s->varcompref[1] && + refa != s->varcompref[1]) ? 2 : 4; + } + } else if (!s->above_comp_ctx[col]) { + if (refl == s->varcompref[1] && refa != s->varcompref[1]) { + c = 1; + } else { + c = (refa == s->varcompref[1] && + refl != s->varcompref[1]) ? 2 : 4; + } + } else { + c = (refl == refa) ? 4 : 2; + } + } + } else { + if (s->above_intra_ctx[col]) { + c = 2; + } else if (s->above_comp_ctx[col]) { + c = 4 * (s->above_ref_ctx[col] != s->varcompref[1]); + } else { + c = 3 * (s->above_ref_ctx[col] != s->varcompref[1]); + } + } + } else if (have_l) { + if (s->left_intra_ctx[row7]) { + c = 2; + } else if (s->left_comp_ctx[row7]) { + c = 4 * (s->left_ref_ctx[row7] != s->varcompref[1]); + } else { + c = 3 * (s->left_ref_ctx[row7] != s->varcompref[1]); + } + } else { + c = 2; + } + bit = vp56_rac_get_prob(&s->c, s->prob.p.comp_ref[c]); + b->ref[var_idx] = s->varcompref[bit]; + s->counts.comp_ref[c][bit]++; + } else { /* single reference */ + int bit, c; + + if (have_a && !s->above_intra_ctx[col]) { + if (have_l && !s->left_intra_ctx[row7]) { + if (s->left_comp_ctx[row7]) { + if (s->above_comp_ctx[col]) { + c = 1 + (!s->fixcompref || !s->left_ref_ctx[row7] || + !s->above_ref_ctx[col]); + } else { + c = (3 * !s->above_ref_ctx[col]) + + (!s->fixcompref || !s->left_ref_ctx[row7]); + } + } else if (s->above_comp_ctx[col]) { + c = (3 * !s->left_ref_ctx[row7]) + + (!s->fixcompref || !s->above_ref_ctx[col]); + } else { + c = 2 * !s->left_ref_ctx[row7] + 2 * !s->above_ref_ctx[col]; + } + } else if (s->above_intra_ctx[col]) { + c = 2; + } else if (s->above_comp_ctx[col]) { + c = 1 + (!s->fixcompref || !s->above_ref_ctx[col]); + } else { + c = 4 * (!s->above_ref_ctx[col]); + } + } else if (have_l && !s->left_intra_ctx[row7]) { + if (s->left_intra_ctx[row7]) { + c = 2; + } else if (s->left_comp_ctx[row7]) { + c = 1 + (!s->fixcompref || !s->left_ref_ctx[row7]); + } else { + c = 4 * (!s->left_ref_ctx[row7]); + } + } else { + c = 2; + } + bit = vp56_rac_get_prob(&s->c, s->prob.p.single_ref[c][0]); + s->counts.single_ref[c][0][bit]++; + if (!bit) { + b->ref[0] = 0; + } else { + // FIXME can this codeblob be replaced by some sort of LUT? + if (have_a) { + if (have_l) { + if (s->left_intra_ctx[row7]) { + if (s->above_intra_ctx[col]) { + c = 2; + } else if (s->above_comp_ctx[col]) { + c = 1 + 2 * (s->fixcompref == 1 || + s->above_ref_ctx[col] == 1); + } else if (!s->above_ref_ctx[col]) { + c = 3; + } else { + c = 4 * (s->above_ref_ctx[col] == 1); + } + } else if (s->above_intra_ctx[col]) { + if (s->left_intra_ctx[row7]) { + c = 2; + } else if (s->left_comp_ctx[row7]) { + c = 1 + 2 * (s->fixcompref == 1 || + s->left_ref_ctx[row7] == 1); + } else if (!s->left_ref_ctx[row7]) { + c = 3; + } else { + c = 4 * (s->left_ref_ctx[row7] == 1); + } + } else if (s->above_comp_ctx[col]) { + if (s->left_comp_ctx[row7]) { + if (s->left_ref_ctx[row7] == s->above_ref_ctx[col]) { + c = 3 * (s->fixcompref == 1 || + s->left_ref_ctx[row7] == 1); + } else { + c = 2; + } + } else if (!s->left_ref_ctx[row7]) { + c = 1 + 2 * (s->fixcompref == 1 || + s->above_ref_ctx[col] == 1); + } else { + c = 3 * (s->left_ref_ctx[row7] == 1) + + (s->fixcompref == 1 || s->above_ref_ctx[col] == 1); + } + } else if (s->left_comp_ctx[row7]) { + if (!s->above_ref_ctx[col]) { + c = 1 + 2 * (s->fixcompref == 1 || + s->left_ref_ctx[row7] == 1); + } else { + c = 3 * (s->above_ref_ctx[col] == 1) + + (s->fixcompref == 1 || s->left_ref_ctx[row7] == 1); + } + } else if (!s->above_ref_ctx[col]) { + if (!s->left_ref_ctx[row7]) { + c = 3; + } else { + c = 4 * (s->left_ref_ctx[row7] == 1); + } + } else if (!s->left_ref_ctx[row7]) { + c = 4 * (s->above_ref_ctx[col] == 1); + } else { + c = 2 * (s->left_ref_ctx[row7] == 1) + + 2 * (s->above_ref_ctx[col] == 1); + } + } else { + if (s->above_intra_ctx[col] || + (!s->above_comp_ctx[col] && !s->above_ref_ctx[col])) { + c = 2; + } else if (s->above_comp_ctx[col]) { + c = 3 * (s->fixcompref == 1 || s->above_ref_ctx[col] == 1); + } else { + c = 4 * (s->above_ref_ctx[col] == 1); + } + } + } else if (have_l) { + if (s->left_intra_ctx[row7] || + (!s->left_comp_ctx[row7] && !s->left_ref_ctx[row7])) { + c = 2; + } else if (s->left_comp_ctx[row7]) { + c = 3 * (s->fixcompref == 1 || s->left_ref_ctx[row7] == 1); + } else { + c = 4 * (s->left_ref_ctx[row7] == 1); + } + } else { + c = 2; + } + bit = vp56_rac_get_prob(&s->c, s->prob.p.single_ref[c][1]); + s->counts.single_ref[c][1][bit]++; + b->ref[0] = 1 + bit; + } + } + } + + if (b->bs <= BS_8x8) { + if (s->segmentation.feat[b->seg_id].skip_enabled) { + b->mode[0] = + b->mode[1] = + b->mode[2] = + b->mode[3] = ZEROMV; + } else { + static const uint8_t off[10] = { + 3, 0, 0, 1, 0, 0, 0, 0, 0, 0 + }; + + // FIXME this needs to use the LUT tables from find_ref_mvs + // because not all are -1,0/0,-1 + int c = inter_mode_ctx_lut[s->above_mode_ctx[col + off[b->bs]]] + [s->left_mode_ctx[row7 + off[b->bs]]]; + + b->mode[0] = vp8_rac_get_tree(&s->c, ff_vp9_inter_mode_tree, + s->prob.p.mv_mode[c]); + b->mode[1] = + b->mode[2] = + b->mode[3] = b->mode[0]; + s->counts.mv_mode[c][b->mode[0] - 10]++; + } + } + + if (s->filtermode == FILTER_SWITCHABLE) { + int c; + + if (have_a && s->above_mode_ctx[col] >= NEARESTMV) { + if (have_l && s->left_mode_ctx[row7] >= NEARESTMV) { + c = s->above_filter_ctx[col] == s->left_filter_ctx[row7] ? + s->left_filter_ctx[row7] : 3; + } else { + c = s->above_filter_ctx[col]; + } + } else if (have_l && s->left_mode_ctx[row7] >= NEARESTMV) { + c = s->left_filter_ctx[row7]; + } else { + c = 3; + } + + b->filter = vp8_rac_get_tree(&s->c, ff_vp9_filter_tree, + s->prob.p.filter[c]); + s->counts.filter[c][b->filter]++; + } else { + b->filter = s->filtermode; + } + + if (b->bs > BS_8x8) { + int c = inter_mode_ctx_lut[s->above_mode_ctx[col]][s->left_mode_ctx[row7]]; + + b->mode[0] = vp8_rac_get_tree(&s->c, ff_vp9_inter_mode_tree, + s->prob.p.mv_mode[c]); + s->counts.mv_mode[c][b->mode[0] - 10]++; + ff_vp9_fill_mv(s, b->mv[0], b->mode[0], 0); + + if (b->bs != BS_8x4) { + b->mode[1] = vp8_rac_get_tree(&s->c, ff_vp9_inter_mode_tree, + s->prob.p.mv_mode[c]); + s->counts.mv_mode[c][b->mode[1] - 10]++; + ff_vp9_fill_mv(s, b->mv[1], b->mode[1], 1); + } else { + b->mode[1] = b->mode[0]; + AV_COPY32(&b->mv[1][0], &b->mv[0][0]); + AV_COPY32(&b->mv[1][1], &b->mv[0][1]); + } + + if (b->bs != BS_4x8) { + b->mode[2] = vp8_rac_get_tree(&s->c, ff_vp9_inter_mode_tree, + s->prob.p.mv_mode[c]); + s->counts.mv_mode[c][b->mode[2] - 10]++; + ff_vp9_fill_mv(s, b->mv[2], b->mode[2], 2); + + if (b->bs != BS_8x4) { + b->mode[3] = vp8_rac_get_tree(&s->c, ff_vp9_inter_mode_tree, + s->prob.p.mv_mode[c]); + s->counts.mv_mode[c][b->mode[3] - 10]++; + ff_vp9_fill_mv(s, b->mv[3], b->mode[3], 3); + } else { + b->mode[3] = b->mode[2]; + AV_COPY32(&b->mv[3][0], &b->mv[2][0]); + AV_COPY32(&b->mv[3][1], &b->mv[2][1]); + } + } else { + b->mode[2] = b->mode[0]; + AV_COPY32(&b->mv[2][0], &b->mv[0][0]); + AV_COPY32(&b->mv[2][1], &b->mv[0][1]); + b->mode[3] = b->mode[1]; + AV_COPY32(&b->mv[3][0], &b->mv[1][0]); + AV_COPY32(&b->mv[3][1], &b->mv[1][1]); + } + } else { + ff_vp9_fill_mv(s, b->mv[0], b->mode[0], -1); + AV_COPY32(&b->mv[1][0], &b->mv[0][0]); + AV_COPY32(&b->mv[2][0], &b->mv[0][0]); + AV_COPY32(&b->mv[3][0], &b->mv[0][0]); + AV_COPY32(&b->mv[1][1], &b->mv[0][1]); + AV_COPY32(&b->mv[2][1], &b->mv[0][1]); + AV_COPY32(&b->mv[3][1], &b->mv[0][1]); + } + } + + // FIXME this can probably be optimized + memset(&s->above_skip_ctx[col], b->skip, w4); + memset(&s->left_skip_ctx[row7], b->skip, h4); + memset(&s->above_txfm_ctx[col], b->tx, w4); + memset(&s->left_txfm_ctx[row7], b->tx, h4); + memset(&s->above_partition_ctx[col], above_ctx[b->bs], w4); + memset(&s->left_partition_ctx[row7], left_ctx[b->bs], h4); + if (!s->keyframe && !s->intraonly) { + memset(&s->above_intra_ctx[col], b->intra, w4); + memset(&s->left_intra_ctx[row7], b->intra, h4); + memset(&s->above_comp_ctx[col], b->comp, w4); + memset(&s->left_comp_ctx[row7], b->comp, h4); + memset(&s->above_mode_ctx[col], b->mode[3], w4); + memset(&s->left_mode_ctx[row7], b->mode[3], h4); + if (s->filtermode == FILTER_SWITCHABLE && !b->intra) { + memset(&s->above_filter_ctx[col], b->filter, w4); + memset(&s->left_filter_ctx[row7], b->filter, h4); + b->filter = ff_vp9_filter_lut[b->filter]; + } + if (b->bs > BS_8x8) { + int mv0 = AV_RN32A(&b->mv[3][0]), mv1 = AV_RN32A(&b->mv[3][1]); + + AV_COPY32(&s->left_mv_ctx[row7 * 2 + 0][0], &b->mv[1][0]); + AV_COPY32(&s->left_mv_ctx[row7 * 2 + 0][1], &b->mv[1][1]); + AV_WN32A(&s->left_mv_ctx[row7 * 2 + 1][0], mv0); + AV_WN32A(&s->left_mv_ctx[row7 * 2 + 1][1], mv1); + AV_COPY32(&s->above_mv_ctx[col * 2 + 0][0], &b->mv[2][0]); + AV_COPY32(&s->above_mv_ctx[col * 2 + 0][1], &b->mv[2][1]); + AV_WN32A(&s->above_mv_ctx[col * 2 + 1][0], mv0); + AV_WN32A(&s->above_mv_ctx[col * 2 + 1][1], mv1); + } else { + int n, mv0 = AV_RN32A(&b->mv[3][0]), mv1 = AV_RN32A(&b->mv[3][1]); + + for (n = 0; n < w4 * 2; n++) { + AV_WN32A(&s->above_mv_ctx[col * 2 + n][0], mv0); + AV_WN32A(&s->above_mv_ctx[col * 2 + n][1], mv1); + } + for (n = 0; n < h4 * 2; n++) { + AV_WN32A(&s->left_mv_ctx[row7 * 2 + n][0], mv0); + AV_WN32A(&s->left_mv_ctx[row7 * 2 + n][1], mv1); + } + } + + if (!b->intra) { // FIXME write 0xff or -1 if intra, so we can use this + // as a direct check in above branches + int vref = b->ref[b->comp ? s->signbias[s->varcompref[0]] : 0]; + + memset(&s->above_ref_ctx[col], vref, w4); + memset(&s->left_ref_ctx[row7], vref, h4); + } + } + + // FIXME kinda ugly + for (y = 0; y < h4; y++) { + int x, o = (row + y) * s->sb_cols * 8 + col; + + if (b->intra) { + for (x = 0; x < w4; x++) { + s->mv[0][o + x].ref[0] = + s->mv[0][o + x].ref[1] = -1; + } + } else if (b->comp) { + for (x = 0; x < w4; x++) { + s->mv[0][o + x].ref[0] = b->ref[0]; + s->mv[0][o + x].ref[1] = b->ref[1]; + AV_COPY32(&s->mv[0][o + x].mv[0], &b->mv[3][0]); + AV_COPY32(&s->mv[0][o + x].mv[1], &b->mv[3][1]); + } + } else { + for (x = 0; x < w4; x++) { + s->mv[0][o + x].ref[0] = b->ref[0]; + s->mv[0][o + x].ref[1] = -1; + AV_COPY32(&s->mv[0][o + x].mv[0], &b->mv[3][0]); + } + } + } +} + +// FIXME remove tx argument, and merge cnt/eob arguments? +static int decode_block_coeffs(VP56RangeCoder *c, int16_t *coef, int n_coeffs, + enum TxfmMode tx, unsigned (*cnt)[6][3], + unsigned (*eob)[6][2], uint8_t(*p)[6][11], + int nnz, const int16_t *scan, + const int16_t(*nb)[2], + const int16_t *band_counts, const int16_t *qmul) +{ + int i = 0, band = 0, band_left = band_counts[band]; + uint8_t *tp = p[0][nnz]; + uint8_t cache[1024]; + + do { + int val, rc; + + val = vp56_rac_get_prob_branchy(c, tp[0]); // eob + eob[band][nnz][val]++; + if (!val) + break; + +skip_eob: + if (!vp56_rac_get_prob_branchy(c, tp[1])) { // zero + cnt[band][nnz][0]++; + if (!--band_left) + band_left = band_counts[++band]; + cache[scan[i]] = 0; + nnz = (1 + cache[nb[i][0]] + cache[nb[i][1]]) >> 1; + tp = p[band][nnz]; + if (++i == n_coeffs) + break; //invalid input; blocks should end with EOB + goto skip_eob; + } + + rc = scan[i]; + if (!vp56_rac_get_prob_branchy(c, tp[2])) { // one + cnt[band][nnz][1]++; + val = 1; + cache[rc] = 1; + } else { + // fill in p[3-10] (model fill) - only once per frame for each pos + if (!tp[3]) + memcpy(&tp[3], ff_vp9_model_pareto8[tp[2]], 8); + + cnt[band][nnz][2]++; + if (!vp56_rac_get_prob_branchy(c, tp[3])) { // 2, 3, 4 + if (!vp56_rac_get_prob_branchy(c, tp[4])) { + cache[rc] = val = 2; + } else { + val = 3 + vp56_rac_get_prob(c, tp[5]); + cache[rc] = 3; + } + } else if (!vp56_rac_get_prob_branchy(c, tp[6])) { // cat1/2 + cache[rc] = 4; + if (!vp56_rac_get_prob_branchy(c, tp[7])) { + val = vp56_rac_get_prob(c, 159) + 5; + } else { + val = (vp56_rac_get_prob(c, 165) << 1) + 7; + val += vp56_rac_get_prob(c, 145); + } + } else { // cat 3-6 + cache[rc] = 5; + if (!vp56_rac_get_prob_branchy(c, tp[8])) { + if (!vp56_rac_get_prob_branchy(c, tp[9])) { + val = (vp56_rac_get_prob(c, 173) << 2) + 11; + val += (vp56_rac_get_prob(c, 148) << 1); + val += vp56_rac_get_prob(c, 140); + } else { + val = (vp56_rac_get_prob(c, 176) << 3) + 19; + val += (vp56_rac_get_prob(c, 155) << 2); + val += (vp56_rac_get_prob(c, 140) << 1); + val += vp56_rac_get_prob(c, 135); + } + } else if (!vp56_rac_get_prob_branchy(c, tp[10])) { + val = (vp56_rac_get_prob(c, 180) << 4) + 35; + val += (vp56_rac_get_prob(c, 157) << 3); + val += (vp56_rac_get_prob(c, 141) << 2); + val += (vp56_rac_get_prob(c, 134) << 1); + val += vp56_rac_get_prob(c, 130); + } else { + val = (vp56_rac_get_prob(c, 254) << 13) + 67; + val += (vp56_rac_get_prob(c, 254) << 12); + val += (vp56_rac_get_prob(c, 254) << 11); + val += (vp56_rac_get_prob(c, 252) << 10); + val += (vp56_rac_get_prob(c, 249) << 9); + val += (vp56_rac_get_prob(c, 243) << 8); + val += (vp56_rac_get_prob(c, 230) << 7); + val += (vp56_rac_get_prob(c, 196) << 6); + val += (vp56_rac_get_prob(c, 177) << 5); + val += (vp56_rac_get_prob(c, 153) << 4); + val += (vp56_rac_get_prob(c, 140) << 3); + val += (vp56_rac_get_prob(c, 133) << 2); + val += (vp56_rac_get_prob(c, 130) << 1); + val += vp56_rac_get_prob(c, 129); + } + } + } + if (!--band_left) + band_left = band_counts[++band]; + if (tx == TX_32X32) // FIXME slow + coef[rc] = ((vp8_rac_get(c) ? -val : val) * qmul[!!i]) / 2; + else + coef[rc] = (vp8_rac_get(c) ? -val : val) * qmul[!!i]; + nnz = (1 + cache[nb[i][0]] + cache[nb[i][1]]) >> 1; + tp = p[band][nnz]; + } while (++i < n_coeffs); + + return i; +} + +static int decode_coeffs(AVCodecContext *avctx) +{ + VP9Context *s = avctx->priv_data; + VP9Block *const b = &s->b; + int row = b->row, col = b->col; + uint8_t (*p)[6][11] = s->prob.coef[b->tx][0 /* y */][!b->intra]; + unsigned (*c)[6][3] = s->counts.coef[b->tx][0 /* y */][!b->intra]; + unsigned (*e)[6][2] = s->counts.eob[b->tx][0 /* y */][!b->intra]; + int w4 = bwh_tab[1][b->bs][0] << 1, h4 = bwh_tab[1][b->bs][1] << 1; + int end_x = FFMIN(2 * (s->cols - col), w4); + int end_y = FFMIN(2 * (s->rows - row), h4); + int n, pl, x, y, step1d = 1 << b->tx, step = 1 << (b->tx * 2); + int uvstep1d = 1 << b->uvtx, uvstep = 1 << (b->uvtx * 2), ret; + int16_t (*qmul)[2] = s->segmentation.feat[b->seg_id].qmul; + int tx = 4 * s->lossless + b->tx; + const int16_t **yscans = ff_vp9_scans[tx]; + const int16_t (**ynbs)[2] = ff_vp9_scans_nb[tx]; + const int16_t *uvscan = ff_vp9_scans[b->uvtx][DCT_DCT]; + const int16_t (*uvnb)[2] = ff_vp9_scans_nb[b->uvtx][DCT_DCT]; + uint8_t *a = &s->above_y_nnz_ctx[col * 2]; + uint8_t *l = &s->left_y_nnz_ctx[(row & 7) << 1]; + static const int16_t band_counts[4][8] = { + { 1, 2, 3, 4, 3, 16 - 13, 0 }, + { 1, 2, 3, 4, 11, 64 - 21, 0 }, + { 1, 2, 3, 4, 11, 256 - 21, 0 }, + { 1, 2, 3, 4, 11, 1024 - 21, 0 }, + }; + const int16_t *y_band_counts = band_counts[b->tx]; + const int16_t *uv_band_counts = band_counts[b->uvtx]; + + /* y tokens */ + if (b->tx > TX_4X4) { // FIXME slow + for (y = 0; y < end_y; y += step1d) + for (x = 1; x < step1d; x++) + l[y] |= l[y + x]; + for (x = 0; x < end_x; x += step1d) + for (y = 1; y < step1d; y++) + a[x] |= a[x + y]; + } + for (n = 0, y = 0; y < end_y; y += step1d) { + for (x = 0; x < end_x; x += step1d, n += step) { + enum TxfmType txtp = ff_vp9_intra_txfm_type[b->mode[b->tx == TX_4X4 && + b->bs > BS_8x8 ? + n : 0]]; + int nnz = a[x] + l[y]; + if ((ret = decode_block_coeffs(&s->c, s->block + 16 * n, 16 * step, + b->tx, c, e, p, nnz, yscans[txtp], + ynbs[txtp], y_band_counts, + qmul[0])) < 0) + return ret; + a[x] = l[y] = !!ret; + if (b->tx > TX_8X8) + AV_WN16A(&s->eob[n], ret); + else + s->eob[n] = ret; + } + } + if (b->tx > TX_4X4) { // FIXME slow + for (y = 0; y < end_y; y += step1d) + memset(&l[y + 1], l[y], FFMIN(end_y - y - 1, step1d - 1)); + for (x = 0; x < end_x; x += step1d) + memset(&a[x + 1], a[x], FFMIN(end_x - x - 1, step1d - 1)); + } + + p = s->prob.coef[b->uvtx][1 /* uv */][!b->intra]; + c = s->counts.coef[b->uvtx][1 /* uv */][!b->intra]; + e = s->counts.eob[b->uvtx][1 /* uv */][!b->intra]; + w4 >>= 1; + h4 >>= 1; + end_x >>= 1; + end_y >>= 1; + for (pl = 0; pl < 2; pl++) { + a = &s->above_uv_nnz_ctx[pl][col]; + l = &s->left_uv_nnz_ctx[pl][row & 7]; + if (b->uvtx > TX_4X4) { // FIXME slow + for (y = 0; y < end_y; y += uvstep1d) + for (x = 1; x < uvstep1d; x++) + l[y] |= l[y + x]; + for (x = 0; x < end_x; x += uvstep1d) + for (y = 1; y < uvstep1d; y++) + a[x] |= a[x + y]; + } + for (n = 0, y = 0; y < end_y; y += uvstep1d) { + for (x = 0; x < end_x; x += uvstep1d, n += uvstep) { + int nnz = a[x] + l[y]; + if ((ret = decode_block_coeffs(&s->c, s->uvblock[pl] + 16 * n, + 16 * uvstep, b->uvtx, c, e, p, + nnz, uvscan, uvnb, + uv_band_counts, qmul[1])) < 0) + return ret; + a[x] = l[y] = !!ret; + if (b->uvtx > TX_8X8) + AV_WN16A(&s->uveob[pl][n], ret); + else + s->uveob[pl][n] = ret; + } + } + if (b->uvtx > TX_4X4) { // FIXME slow + for (y = 0; y < end_y; y += uvstep1d) + memset(&l[y + 1], l[y], FFMIN(end_y - y - 1, uvstep1d - 1)); + for (x = 0; x < end_x; x += uvstep1d) + memset(&a[x + 1], a[x], FFMIN(end_x - x - 1, uvstep1d - 1)); + } + } + + return 0; +} + +static av_always_inline int check_intra_mode(VP9Context *s, int mode, + uint8_t **a, + uint8_t *dst_edge, + ptrdiff_t stride_edge, + uint8_t *dst_inner, + ptrdiff_t stride_inner, + uint8_t *l, int col, int x, int w, + int row, int y, enum TxfmMode tx, + int p) +{ + int have_top = row > 0 || y > 0; + int have_left = col > s->tiling.tile_col_start || x > 0; + int have_right = x < w - 1; + static const uint8_t mode_conv[10][2 /* have_left */][2 /* have_top */] = { + [VERT_PRED] = { { DC_127_PRED, VERT_PRED }, + { DC_127_PRED, VERT_PRED } }, + [HOR_PRED] = { { DC_129_PRED, DC_129_PRED }, + { HOR_PRED, HOR_PRED } }, + [DC_PRED] = { { DC_128_PRED, TOP_DC_PRED }, + { LEFT_DC_PRED, DC_PRED } }, + [DIAG_DOWN_LEFT_PRED] = { { DC_127_PRED, DIAG_DOWN_LEFT_PRED }, + { DC_127_PRED, DIAG_DOWN_LEFT_PRED } }, + [DIAG_DOWN_RIGHT_PRED] = { { DIAG_DOWN_RIGHT_PRED, DIAG_DOWN_RIGHT_PRED }, + { DIAG_DOWN_RIGHT_PRED, DIAG_DOWN_RIGHT_PRED } }, + [VERT_RIGHT_PRED] = { { VERT_RIGHT_PRED, VERT_RIGHT_PRED }, + { VERT_RIGHT_PRED, VERT_RIGHT_PRED } }, + [HOR_DOWN_PRED] = { { HOR_DOWN_PRED, HOR_DOWN_PRED }, + { HOR_DOWN_PRED, HOR_DOWN_PRED } }, + [VERT_LEFT_PRED] = { { DC_127_PRED, VERT_LEFT_PRED }, + { DC_127_PRED, VERT_LEFT_PRED } }, + [HOR_UP_PRED] = { { DC_129_PRED, DC_129_PRED }, + { HOR_UP_PRED, HOR_UP_PRED } }, + [TM_VP8_PRED] = { { DC_129_PRED, VERT_PRED }, + { HOR_PRED, TM_VP8_PRED } }, + }; + static const struct { + uint8_t needs_left:1; + uint8_t needs_top:1; + uint8_t needs_topleft:1; + uint8_t needs_topright:1; + } edges[N_INTRA_PRED_MODES] = { + [VERT_PRED] = { .needs_top = 1 }, + [HOR_PRED] = { .needs_left = 1 }, + [DC_PRED] = { .needs_top = 1, .needs_left = 1 }, + [DIAG_DOWN_LEFT_PRED] = { .needs_top = 1, .needs_topright = 1 }, + [DIAG_DOWN_RIGHT_PRED] = { .needs_left = 1, .needs_top = 1, + .needs_topleft = 1 }, + [VERT_RIGHT_PRED] = { .needs_left = 1, .needs_top = 1, + .needs_topleft = 1 }, + [HOR_DOWN_PRED] = { .needs_left = 1, .needs_top = 1, + .needs_topleft = 1 }, + [VERT_LEFT_PRED] = { .needs_top = 1, .needs_topright = 1 }, + [HOR_UP_PRED] = { .needs_left = 1 }, + [TM_VP8_PRED] = { .needs_left = 1, .needs_top = 1, + .needs_topleft = 1 }, + [LEFT_DC_PRED] = { .needs_left = 1 }, + [TOP_DC_PRED] = { .needs_top = 1 }, + [DC_128_PRED] = { 0 }, + [DC_127_PRED] = { 0 }, + [DC_129_PRED] = { 0 } + }; + + av_assert2(mode >= 0 && mode < 10); + mode = mode_conv[mode][have_left][have_top]; + if (edges[mode].needs_top) { + uint8_t *top = NULL, *topleft = NULL; + int n_px_need = 4 << tx, n_px_have = (((s->cols - col) << !p) - x) * 4; + int n_px_need_tr = 0; + + if (tx == TX_4X4 && edges[mode].needs_topright && have_right) + n_px_need_tr = 4; + + // if top of sb64-row, use s->intra_pred_data[] instead of + // dst[-stride] for intra prediction (it contains pre- instead of + // post-loopfilter data) + if (have_top) { + top = !(row & 7) && !y ? + s->intra_pred_data[p] + col * (8 >> !!p) + x * 4 : + y == 0 ? &dst_edge[-stride_edge] : &dst_inner[-stride_inner]; + if (have_left) + topleft = !(row & 7) && !y ? + s->intra_pred_data[p] + col * (8 >> !!p) + x * 4 : + y == 0 || x == 0 ? &dst_edge[-stride_edge] : + &dst_inner[-stride_inner]; + } + + if (have_top && + (!edges[mode].needs_topleft || (have_left && top == topleft)) && + (tx != TX_4X4 || !edges[mode].needs_topright || have_right) && + n_px_need + n_px_need_tr <= n_px_have) { + *a = top; + } else { + if (have_top) { + if (n_px_need <= n_px_have) { + memcpy(*a, top, n_px_need); + } else { + memcpy(*a, top, n_px_have); + memset(&(*a)[n_px_have], (*a)[n_px_have - 1], + n_px_need - n_px_have); + } + } else { + memset(*a, 127, n_px_need); + } + if (edges[mode].needs_topleft) { + if (have_left && have_top) + (*a)[-1] = topleft[-1]; + else + (*a)[-1] = have_top ? 129 : 127; + } + if (tx == TX_4X4 && edges[mode].needs_topright) { + if (have_top && have_right && + n_px_need + n_px_need_tr <= n_px_have) { + memcpy(&(*a)[4], &top[4], 4); + } else { + memset(&(*a)[4], (*a)[3], 4); + } + } + } + } + if (edges[mode].needs_left) { + if (have_left) { + int i; + int n_px_need = 4 << tx; + int n_px_have = (((s->rows - row) << !p) - y) * 4; + uint8_t *dst = x == 0 ? dst_edge : dst_inner; + ptrdiff_t stride = x == 0 ? stride_edge : stride_inner; + + if (n_px_need <= n_px_have) { + for (i = 0; i < n_px_need; i++) + l[i] = dst[i * stride - 1]; + } else { + for (i = 0; i < n_px_have; i++) + l[i] = dst[i * stride - 1]; + memset(&l[i], l[i - 1], n_px_need - n_px_have); + } + } else { + memset(l, 129, 4 << tx); + } + } + + return mode; +} + +static void intra_recon(AVCodecContext *avctx, ptrdiff_t y_off, ptrdiff_t uv_off) +{ + VP9Context *s = avctx->priv_data; + VP9Block *const b = &s->b; + int row = b->row, col = b->col; + int w4 = bwh_tab[1][b->bs][0] << 1, step1d = 1 << b->tx, n; + int h4 = bwh_tab[1][b->bs][1] << 1, x, y, step = 1 << (b->tx * 2); + int end_x = FFMIN(2 * (s->cols - col), w4); + int end_y = FFMIN(2 * (s->rows - row), h4); + int tx = 4 * s->lossless + b->tx, uvtx = b->uvtx + 4 * s->lossless; + int uvstep1d = 1 << b->uvtx, p; + uint8_t *dst = b->dst[0], *dst_r = s->cur_frame->data[0] + y_off; + + for (n = 0, y = 0; y < end_y; y += step1d) { + uint8_t *ptr = dst, *ptr_r = dst_r; + for (x = 0; x < end_x; + x += step1d, ptr += 4 * step1d, ptr_r += 4 * step1d, n += step) { + int mode = b->mode[b->bs > BS_8x8 && b->tx == TX_4X4 ? + y * 2 + x : 0]; + LOCAL_ALIGNED_16(uint8_t, a_buf, [48]); + uint8_t *a = &a_buf[16], l[32]; + enum TxfmType txtp = ff_vp9_intra_txfm_type[mode]; + int eob = b->tx > TX_8X8 ? AV_RN16A(&s->eob[n]) : s->eob[n]; + + mode = check_intra_mode(s, mode, &a, ptr_r, + s->cur_frame->linesize[0], + ptr, b->y_stride, l, + col, x, w4, row, y, b->tx, 0); + s->dsp.intra_pred[b->tx][mode](ptr, b->y_stride, l, a); + if (eob) + s->dsp.itxfm_add[tx][txtp](ptr, b->y_stride, + s->block + 16 * n, eob); + } + dst_r += 4 * s->cur_frame->linesize[0] * step1d; + dst += 4 * b->y_stride * step1d; + } + + // U/V + h4 >>= 1; + w4 >>= 1; + end_x >>= 1; + end_y >>= 1; + step = 1 << (b->uvtx * 2); + for (p = 0; p < 2; p++) { + dst = b->dst[1 + p]; + dst_r = s->cur_frame->data[1 + p] + uv_off; + for (n = 0, y = 0; y < end_y; y += uvstep1d) { + uint8_t *ptr = dst, *ptr_r = dst_r; + for (x = 0; x < end_x; + x += uvstep1d, ptr += 4 * uvstep1d, + ptr_r += 4 * uvstep1d, n += step) { + int mode = b->uvmode; + LOCAL_ALIGNED_16(uint8_t, a_buf, [48]); + uint8_t *a = &a_buf[16], l[32]; + int eob = b->uvtx > TX_8X8 ? AV_RN16A(&s->uveob[p][n]) + : s->uveob[p][n]; + + mode = check_intra_mode(s, mode, &a, ptr_r, + s->cur_frame->linesize[1], + ptr, b->uv_stride, l, + col, x, w4, row, y, b->uvtx, p + 1); + s->dsp.intra_pred[b->uvtx][mode](ptr, b->uv_stride, l, a); + if (eob) + s->dsp.itxfm_add[uvtx][DCT_DCT](ptr, b->uv_stride, + s->uvblock[p] + 16 * n, + eob); + } + dst_r += 4 * uvstep1d * s->cur_frame->linesize[1]; + dst += 4 * uvstep1d * b->uv_stride; + } + } +} + +static av_always_inline void mc_luma_dir(VP9Context *s, vp9_mc_func(*mc)[2], + uint8_t *dst, ptrdiff_t dst_stride, + const uint8_t *ref, + ptrdiff_t ref_stride, + ptrdiff_t y, ptrdiff_t x, + const VP56mv *mv, + int bw, int bh, int w, int h) +{ + int mx = mv->x, my = mv->y; + + y += my >> 3; + x += mx >> 3; + ref += y * ref_stride + x; + mx &= 7; + my &= 7; + // FIXME bilinear filter only needs 0/1 pixels, not 3/4 + if (x < !!mx * 3 || y < !!my * 3 || + x + !!mx * 4 > w - bw || y + !!my * 4 > h - bh) { + s->vdsp.emulated_edge_mc(s->edge_emu_buffer, + ref - !!my * 3 * ref_stride - !!mx * 3, + 80, + ref_stride, + bw + !!mx * 7, bh + !!my * 7, + x - !!mx * 3, y - !!my * 3, w, h); + ref = s->edge_emu_buffer + !!my * 3 * 80 + !!mx * 3; + ref_stride = 80; + } + mc[!!mx][!!my](dst, ref, dst_stride, ref_stride, bh, mx << 1, my << 1); +} + +static av_always_inline void mc_chroma_dir(VP9Context *s, vp9_mc_func(*mc)[2], + uint8_t *dst_u, uint8_t *dst_v, + ptrdiff_t dst_stride, + const uint8_t *ref_u, + ptrdiff_t src_stride_u, + const uint8_t *ref_v, + ptrdiff_t src_stride_v, + ptrdiff_t y, ptrdiff_t x, + const VP56mv *mv, + int bw, int bh, int w, int h) +{ + int mx = mv->x, my = mv->y; + + y += my >> 4; + x += mx >> 4; + ref_u += y * src_stride_u + x; + ref_v += y * src_stride_v + x; + mx &= 15; + my &= 15; + // FIXME bilinear filter only needs 0/1 pixels, not 3/4 + if (x < !!mx * 3 || y < !!my * 3 || + x + !!mx * 4 > w - bw || y + !!my * 4 > h - bh) { + s->vdsp.emulated_edge_mc(s->edge_emu_buffer, + ref_u - !!my * 3 * src_stride_u - !!mx * 3, + 80, + src_stride_u, + bw + !!mx * 7, bh + !!my * 7, + x - !!mx * 3, y - !!my * 3, w, h); + ref_u = s->edge_emu_buffer + !!my * 3 * 80 + !!mx * 3; + mc[!!mx][!!my](dst_u, ref_u, dst_stride, 80, bh, mx, my); + + s->vdsp.emulated_edge_mc(s->edge_emu_buffer, + ref_v - !!my * 3 * src_stride_v - !!mx * 3, + 80, + src_stride_v, + bw + !!mx * 7, bh + !!my * 7, + x - !!mx * 3, y - !!my * 3, w, h); + ref_v = s->edge_emu_buffer + !!my * 3 * 80 + !!mx * 3; + mc[!!mx][!!my](dst_v, ref_v, dst_stride, 80, bh, mx, my); + } else { + mc[!!mx][!!my](dst_u, ref_u, dst_stride, src_stride_u, bh, mx, my); + mc[!!mx][!!my](dst_v, ref_v, dst_stride, src_stride_v, bh, mx, my); + } +} + +static int inter_recon(AVCodecContext *avctx) +{ + static const uint8_t bwlog_tab[2][N_BS_SIZES] = { + { 0, 0, 1, 1, 1, 2, 2, 2, 3, 3, 3, 4, 4 }, + { 1, 1, 2, 2, 2, 3, 3, 3, 4, 4, 4, 4, 4 }, + }; + VP9Context *s = avctx->priv_data; + VP9Block *const b = &s->b; + int row = b->row, col = b->col; + AVFrame *ref1 = s->refs[s->refidx[b->ref[0]]]; + AVFrame *ref2 = b->comp ? s->refs[s->refidx[b->ref[1]]] : NULL; + int w = avctx->width, h = avctx->height; + ptrdiff_t ls_y = b->y_stride, ls_uv = b->uv_stride; + + if (!ref1->data[0] || (b->comp && !ref2->data[0])) + return AVERROR_INVALIDDATA; + + // y inter pred + if (b->bs > BS_8x8) { + if (b->bs == BS_8x4) { + mc_luma_dir(s, s->dsp.mc[3][b->filter][0], b->dst[0], ls_y, + ref1->data[0], ref1->linesize[0], + row << 3, col << 3, &b->mv[0][0], 8, 4, w, h); + mc_luma_dir(s, s->dsp.mc[3][b->filter][0], + b->dst[0] + 4 * ls_y, ls_y, + ref1->data[0], ref1->linesize[0], + (row << 3) + 4, col << 3, &b->mv[2][0], 8, 4, w, h); + + if (b->comp) { + mc_luma_dir(s, s->dsp.mc[3][b->filter][1], b->dst[0], ls_y, + ref2->data[0], ref2->linesize[0], + row << 3, col << 3, &b->mv[0][1], 8, 4, w, h); + mc_luma_dir(s, s->dsp.mc[3][b->filter][1], + b->dst[0] + 4 * ls_y, ls_y, + ref2->data[0], ref2->linesize[0], + (row << 3) + 4, col << 3, &b->mv[2][1], 8, 4, w, h); + } + } else if (b->bs == BS_4x8) { + mc_luma_dir(s, s->dsp.mc[4][b->filter][0], b->dst[0], ls_y, + ref1->data[0], ref1->linesize[0], + row << 3, col << 3, &b->mv[0][0], 4, 8, w, h); + mc_luma_dir(s, s->dsp.mc[4][b->filter][0], b->dst[0] + 4, ls_y, + ref1->data[0], ref1->linesize[0], + row << 3, (col << 3) + 4, &b->mv[1][0], 4, 8, w, h); + + if (b->comp) { + mc_luma_dir(s, s->dsp.mc[4][b->filter][1], b->dst[0], ls_y, + ref2->data[0], ref2->linesize[0], + row << 3, col << 3, &b->mv[0][1], 4, 8, w, h); + mc_luma_dir(s, s->dsp.mc[4][b->filter][1], b->dst[0] + 4, ls_y, + ref2->data[0], ref2->linesize[0], + row << 3, (col << 3) + 4, &b->mv[1][1], 4, 8, w, h); + } + } else { + av_assert2(b->bs == BS_4x4); + + // FIXME if two horizontally adjacent blocks have the same MV, + // do a w8 instead of a w4 call + mc_luma_dir(s, s->dsp.mc[4][b->filter][0], b->dst[0], ls_y, + ref1->data[0], ref1->linesize[0], + row << 3, col << 3, &b->mv[0][0], 4, 4, w, h); + mc_luma_dir(s, s->dsp.mc[4][b->filter][0], b->dst[0] + 4, ls_y, + ref1->data[0], ref1->linesize[0], + row << 3, (col << 3) + 4, &b->mv[1][0], 4, 4, w, h); + mc_luma_dir(s, s->dsp.mc[4][b->filter][0], + b->dst[0] + 4 * ls_y, ls_y, + ref1->data[0], ref1->linesize[0], + (row << 3) + 4, col << 3, &b->mv[2][0], 4, 4, w, h); + mc_luma_dir(s, s->dsp.mc[4][b->filter][0], + b->dst[0] + 4 * ls_y + 4, ls_y, + ref1->data[0], ref1->linesize[0], + (row << 3) + 4, (col << 3) + 4, &b->mv[3][0], 4, 4, w, h); + + if (b->comp) { + mc_luma_dir(s, s->dsp.mc[4][b->filter][1], b->dst[0], ls_y, + ref2->data[0], ref2->linesize[0], + row << 3, col << 3, &b->mv[0][1], 4, 4, w, h); + mc_luma_dir(s, s->dsp.mc[4][b->filter][1], b->dst[0] + 4, ls_y, + ref2->data[0], ref2->linesize[0], + row << 3, (col << 3) + 4, &b->mv[1][1], 4, 4, w, h); + mc_luma_dir(s, s->dsp.mc[4][b->filter][1], + b->dst[0] + 4 * ls_y, ls_y, + ref2->data[0], ref2->linesize[0], + (row << 3) + 4, col << 3, &b->mv[2][1], 4, 4, w, h); + mc_luma_dir(s, s->dsp.mc[4][b->filter][1], + b->dst[0] + 4 * ls_y + 4, ls_y, + ref2->data[0], ref2->linesize[0], + (row << 3) + 4, (col << 3) + 4, &b->mv[3][1], 4, 4, w, h); + } + } + } else { + int bwl = bwlog_tab[0][b->bs]; + int bw = bwh_tab[0][b->bs][0] * 4; + int bh = bwh_tab[0][b->bs][1] * 4; + + mc_luma_dir(s, s->dsp.mc[bwl][b->filter][0], b->dst[0], ls_y, + ref1->data[0], ref1->linesize[0], + row << 3, col << 3, &b->mv[0][0], bw, bh, w, h); + + if (b->comp) + mc_luma_dir(s, s->dsp.mc[bwl][b->filter][1], b->dst[0], ls_y, + ref2->data[0], ref2->linesize[0], + row << 3, col << 3, &b->mv[0][1], bw, bh, w, h); + } + + // uv inter pred + { + int bwl = bwlog_tab[1][b->bs]; + int bw = bwh_tab[1][b->bs][0] * 4, bh = bwh_tab[1][b->bs][1] * 4; + VP56mv mvuv; + + w = (w + 1) >> 1; + h = (h + 1) >> 1; + if (b->bs > BS_8x8) { + mvuv.x = ROUNDED_DIV(b->mv[0][0].x + b->mv[1][0].x + + b->mv[2][0].x + b->mv[3][0].x, 4); + mvuv.y = ROUNDED_DIV(b->mv[0][0].y + b->mv[1][0].y + + b->mv[2][0].y + b->mv[3][0].y, 4); + } else { + mvuv = b->mv[0][0]; + } + + mc_chroma_dir(s, s->dsp.mc[bwl][b->filter][0], + b->dst[1], b->dst[2], ls_uv, + ref1->data[1], ref1->linesize[1], + ref1->data[2], ref1->linesize[2], + row << 2, col << 2, &mvuv, bw, bh, w, h); + + if (b->comp) { + if (b->bs > BS_8x8) { + mvuv.x = ROUNDED_DIV(b->mv[0][1].x + b->mv[1][1].x + + b->mv[2][1].x + b->mv[3][1].x, 4); + mvuv.y = ROUNDED_DIV(b->mv[0][1].y + b->mv[1][1].y + + b->mv[2][1].y + b->mv[3][1].y, 4); + } else { + mvuv = b->mv[0][1]; + } + mc_chroma_dir(s, s->dsp.mc[bwl][b->filter][1], + b->dst[1], b->dst[2], ls_uv, + ref2->data[1], ref2->linesize[1], + ref2->data[2], ref2->linesize[2], + row << 2, col << 2, &mvuv, bw, bh, w, h); + } + } + + if (!b->skip) { + /* mostly copied intra_reconn() */ + + int w4 = bwh_tab[1][b->bs][0] << 1, step1d = 1 << b->tx, n; + int h4 = bwh_tab[1][b->bs][1] << 1, x, y, step = 1 << (b->tx * 2); + int end_x = FFMIN(2 * (s->cols - col), w4); + int end_y = FFMIN(2 * (s->rows - row), h4); + int tx = 4 * s->lossless + b->tx, uvtx = b->uvtx + 4 * s->lossless; + int uvstep1d = 1 << b->uvtx, p; + uint8_t *dst = b->dst[0]; + + // y itxfm add + for (n = 0, y = 0; y < end_y; y += step1d) { + uint8_t *ptr = dst; + for (x = 0; x < end_x; x += step1d, ptr += 4 * step1d, n += step) { + int eob = b->tx > TX_8X8 ? AV_RN16A(&s->eob[n]) : s->eob[n]; + + if (eob) + s->dsp.itxfm_add[tx][DCT_DCT](ptr, b->y_stride, + s->block + 16 * n, eob); + } + dst += 4 * b->y_stride * step1d; + } + + // uv itxfm add + h4 >>= 1; + w4 >>= 1; + end_x >>= 1; + end_y >>= 1; + step = 1 << (b->uvtx * 2); + for (p = 0; p < 2; p++) { + dst = b->dst[p + 1]; + for (n = 0, y = 0; y < end_y; y += uvstep1d) { + uint8_t *ptr = dst; + for (x = 0; x < end_x; x += uvstep1d, ptr += 4 * uvstep1d, n += step) { + int eob = b->uvtx > TX_8X8 ? AV_RN16A(&s->uveob[p][n]) + : s->uveob[p][n]; + if (eob) + s->dsp.itxfm_add[uvtx][DCT_DCT](ptr, b->uv_stride, + s->uvblock[p] + 16 * n, eob); + } + dst += 4 * uvstep1d * b->uv_stride; + } + } + } + return 0; +} + +static av_always_inline void mask_edges(VP9Filter *lflvl, int is_uv, + int row_and_7, int col_and_7, + int w, int h, int col_end, int row_end, + enum TxfmMode tx, int skip_inter) +{ + // FIXME I'm pretty sure all loops can be replaced by a single LUT if + // we make VP9Filter.mask uint64_t (i.e. row/col all single variable) + // and make the LUT 5-indexed (bl, bp, is_uv, tx and row/col), and then + // use row_and_7/col_and_7 as shifts (1*col_and_7+8*row_and_7) + + // the intended behaviour of the vp9 loopfilter is to work on 8-pixel + // edges. This means that for UV, we work on two subsampled blocks at + // a time, and we only use the topleft block's mode information to set + // things like block strength. Thus, for any block size smaller than + // 16x16, ignore the odd portion of the block. + if (tx == TX_4X4 && is_uv) { + if (h == 1) { + if (row_and_7 & 1) + return; + if (!row_end) + h += 1; + } + if (w == 1) { + if (col_and_7 & 1) + return; + if (!col_end) + w += 1; + } + } + + if (tx == TX_4X4 && !skip_inter) { + int t = 1 << col_and_7, m_col = (t << w) - t, y; + int m_col_odd = (t << (w - 1)) - t; + + // on 32-px edges, use the 8-px wide loopfilter; else, use 4-px wide + if (is_uv) { + int m_row_8 = m_col & 0x01, m_row_4 = m_col - m_row_8; + + for (y = row_and_7; y < h + row_and_7; y++) { + int col_mask_id = 2 - !(y & 7); + + lflvl->mask[is_uv][0][y][1] |= m_row_8; + lflvl->mask[is_uv][0][y][2] |= m_row_4; + // for odd lines, if the odd col is not being filtered, + // skip odd row also: + // .---. <-- a + // | | + // |___| <-- b + // ^ ^ + // c d + // + // if a/c are even row/col and b/d are odd, and d is skipped, + // e.g. right edge of size-66x66.webm, then skip b also (bug) + if ((col_end & 1) && (y & 1)) { + lflvl->mask[is_uv][1][y][col_mask_id] |= m_col_odd; + } else { + lflvl->mask[is_uv][1][y][col_mask_id] |= m_col; + } + } + } else { + int m_row_8 = m_col & 0x11, m_row_4 = m_col - m_row_8; + + for (y = row_and_7; y < h + row_and_7; y++) { + int col_mask_id = 2 - !(y & 3); + + lflvl->mask[is_uv][0][y][1] |= m_row_8; // row edge + lflvl->mask[is_uv][0][y][2] |= m_row_4; + lflvl->mask[is_uv][1][y][col_mask_id] |= m_col; // col edge + lflvl->mask[is_uv][0][y][3] |= m_col; + lflvl->mask[is_uv][1][y][3] |= m_col; + } + } + } else { + int y, t = 1 << col_and_7, m_col = (t << w) - t; + + if (!skip_inter) { + int mask_id = (tx == TX_8X8); + int l2 = tx + is_uv - 1, step1d = 1 << l2; + static const unsigned masks[4] = { 0xff, 0x55, 0x11, 0x01 }; + int m_row = m_col & masks[l2]; + + // at odd UV col/row edges tx16/tx32 loopfilter edges, force + // 8wd loopfilter to prevent going off the visible edge. + if (is_uv && tx > TX_8X8 && (w ^ (w - 1)) == 1) { + int m_row_16 = ((t << (w - 1)) - t) & masks[l2]; + int m_row_8 = m_row - m_row_16; + + for (y = row_and_7; y < h + row_and_7; y++) { + lflvl->mask[is_uv][0][y][0] |= m_row_16; + lflvl->mask[is_uv][0][y][1] |= m_row_8; + } + } else { + for (y = row_and_7; y < h + row_and_7; y++) + lflvl->mask[is_uv][0][y][mask_id] |= m_row; + } + + if (is_uv && tx > TX_8X8 && (h ^ (h - 1)) == 1) { + for (y = row_and_7; y < h + row_and_7 - 1; y += step1d) + lflvl->mask[is_uv][1][y][0] |= m_col; + if (y - row_and_7 == h - 1) + lflvl->mask[is_uv][1][y][1] |= m_col; + } else { + for (y = row_and_7; y < h + row_and_7; y += step1d) + lflvl->mask[is_uv][1][y][mask_id] |= m_col; + } + } else if (tx != TX_4X4) { + int mask_id; + + mask_id = (tx == TX_8X8) || (is_uv && h == 1); + lflvl->mask[is_uv][1][row_and_7][mask_id] |= m_col; + mask_id = (tx == TX_8X8) || (is_uv && w == 1); + for (y = row_and_7; y < h + row_and_7; y++) + lflvl->mask[is_uv][0][y][mask_id] |= t; + } else if (is_uv) { + int t8 = t & 0x01, t4 = t - t8; + + for (y = row_and_7; y < h + row_and_7; y++) { + lflvl->mask[is_uv][0][y][2] |= t4; + lflvl->mask[is_uv][0][y][1] |= t8; + } + lflvl->mask[is_uv][1][row_and_7][2 - !(row_and_7 & 7)] |= m_col; + } else { + int t8 = t & 0x11, t4 = t - t8; + + for (y = row_and_7; y < h + row_and_7; y++) { + lflvl->mask[is_uv][0][y][2] |= t4; + lflvl->mask[is_uv][0][y][1] |= t8; + } + lflvl->mask[is_uv][1][row_and_7][2 - !(row_and_7 & 3)] |= m_col; + } + } +} + +int ff_vp9_decode_block(AVCodecContext *avctx, int row, int col, + VP9Filter *lflvl, ptrdiff_t yoff, ptrdiff_t uvoff, + enum BlockLevel bl, enum BlockPartition bp) +{ + VP9Context *s = avctx->priv_data; + VP9Block *const b = &s->b; + enum BlockSize bs = bl * 3 + bp; + int ret, y, w4 = bwh_tab[1][bs][0], h4 = bwh_tab[1][bs][1], lvl; + int emu[2]; + + b->row = row; + b->row7 = row & 7; + b->col = col; + b->col7 = col & 7; + + s->min_mv.x = -(128 + col * 64); + s->min_mv.y = -(128 + row * 64); + s->max_mv.x = 128 + (s->cols - col - w4) * 64; + s->max_mv.y = 128 + (s->rows - row - h4) * 64; + + b->bs = bs; + decode_mode(s, b); + b->uvtx = b->tx - (w4 * 2 == (1 << b->tx) || h4 * 2 == (1 << b->tx)); + + if (!b->skip) { + if ((ret = decode_coeffs(avctx)) < 0) + return ret; + } else { + int pl; + + memset(&s->above_y_nnz_ctx[col * 2], 0, w4 * 2); + memset(&s->left_y_nnz_ctx[(row & 7) << 1], 0, h4 * 2); + for (pl = 0; pl < 2; pl++) { + memset(&s->above_uv_nnz_ctx[pl][col], 0, w4); + memset(&s->left_uv_nnz_ctx[pl][row & 7], 0, h4); + } + } + + /* Emulated overhangs if the stride of the target buffer can't hold. + * This allows to support emu-edge and so on even if we have large + * block overhangs. */ + emu[0] = (col + w4) * 8 > s->cur_frame->linesize[0] || + (row + h4) > s->rows + 2 * !(avctx->flags & CODEC_FLAG_EMU_EDGE); + emu[1] = (col + w4) * 4 > s->cur_frame->linesize[1] || + (row + h4) > s->rows + 2 * !(avctx->flags & CODEC_FLAG_EMU_EDGE); + if (emu[0]) { + b->dst[0] = s->tmp_y; + b->y_stride = 64; + } else { + b->dst[0] = s->cur_frame->data[0] + yoff; + b->y_stride = s->cur_frame->linesize[0]; + } + if (emu[1]) { + b->dst[1] = s->tmp_uv[0]; + b->dst[2] = s->tmp_uv[1]; + b->uv_stride = 32; + } else { + b->dst[1] = s->cur_frame->data[1] + uvoff; + b->dst[2] = s->cur_frame->data[2] + uvoff; + b->uv_stride = s->cur_frame->linesize[1]; + } + if (b->intra) { + intra_recon(avctx, yoff, uvoff); + } else { + if ((ret = inter_recon(avctx)) < 0) + return ret; + } + if (emu[0]) { + int w = FFMIN(s->cols - col, w4) * 8; + int h = FFMIN(s->rows - row, h4) * 8; + int n, o = 0; + + for (n = 0; o < w; n++) { + int bw = 64 >> n; + + av_assert2(n <= 4); + if (w & bw) { + s->dsp.mc[n][0][0][0][0](s->cur_frame->data[0] + yoff + o, + s->tmp_y + o, + s->cur_frame->linesize[0], + 64, h, 0, 0); + o += bw; + } + } + } + if (emu[1]) { + int w = FFMIN(s->cols - col, w4) * 4; + int h = FFMIN(s->rows - row, h4) * 4; + int n, o = 0; + + for (n = 1; o < w; n++) { + int bw = 64 >> n; + + av_assert2(n <= 4); + if (w & bw) { + s->dsp.mc[n][0][0][0][0](s->cur_frame->data[1] + uvoff + o, + s->tmp_uv[0] + o, + s->cur_frame->linesize[1], + 32, h, 0, 0); + s->dsp.mc[n][0][0][0][0](s->cur_frame->data[2] + uvoff + o, + s->tmp_uv[1] + o, + s->cur_frame->linesize[2], + 32, h, 0, 0); + o += bw; + } + } + } + + // pick filter level and find edges to apply filter to + if (s->filter.level && + (lvl = s->segmentation.feat[b->seg_id].lflvl[b->intra ? 0 : b->ref[0] + 1] + [b->mode[3] != ZEROMV]) > 0) { + int x_end = FFMIN(s->cols - col, w4); + int y_end = FFMIN(s->rows - row, h4); + int skip_inter = !b->intra && b->skip; + + for (y = 0; y < h4; y++) + memset(&lflvl->level[((row & 7) + y) * 8 + (col & 7)], lvl, w4); + mask_edges(lflvl, 0, row & 7, col & 7, x_end, y_end, 0, 0, b->tx, skip_inter); + mask_edges(lflvl, 1, row & 7, col & 7, x_end, y_end, + s->cols & 1 && col + w4 >= s->cols ? s->cols & 7 : 0, + s->rows & 1 && row + h4 >= s->rows ? s->rows & 7 : 0, + b->uvtx, skip_inter); + + if (!s->filter.lim_lut[lvl]) { + int sharp = s->filter.sharpness; + int limit = lvl; + + if (sharp > 0) { + limit >>= (sharp + 3) >> 2; + limit = FFMIN(limit, 9 - sharp); + } + limit = FFMAX(limit, 1); + + s->filter.lim_lut[lvl] = limit; + s->filter.mblim_lut[lvl] = 2 * (lvl + 2) + limit; + } + } + + return 0; +} -- cgit v1.2.3