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authorRonald S. Bultje <rsbultje@gmail.com>2013-09-30 23:03:30 -0400
committerLuca Barbato <lu_zero@gentoo.org>2013-11-15 10:16:28 +0100
commit72ca830f511fcdc01253689615faed25da7c57bf (patch)
treeabed6bfb85862fbfa306f686d93c822a82722004 /libavcodec/vp9block.c
parent458446acfa1441d283dacf9e6e545beb083b8bb0 (diff)
lavc: VP9 decoder
Originally written by Ronald S. Bultje <rsbultje@gmail.com> and Clément Bœsch <u@pkh.me> Further contributions by: Anton Khirnov <anton@khirnov.net> Diego Biurrun <diego@biurrun.de> Luca Barbato <lu_zero@gentoo.org> Martin Storsjö <martin@martin.st> Signed-off-by: Luca Barbato <lu_zero@gentoo.org> Signed-off-by: Anton Khirnov <anton@khirnov.net>
Diffstat (limited to 'libavcodec/vp9block.c')
-rw-r--r--libavcodec/vp9block.c1684
1 files changed, 1684 insertions, 0 deletions
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 <rsbultje gmail com>
+ * Copyright (C) 2013 Clément Bœsch <u pkh me>
+ *
+ * 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;
+}
generated by cgit v1.2.3 (git 2.39.1) at 2024-05-18 12:03:50 +0000