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-rw-r--r--media/ffvpx/libavcodec/vp9prob.c272
1 files changed, 272 insertions, 0 deletions
diff --git a/media/ffvpx/libavcodec/vp9prob.c b/media/ffvpx/libavcodec/vp9prob.c
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+++ b/media/ffvpx/libavcodec/vp9prob.c
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+/*
+ * 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 FFmpeg.
+ *
+ * FFmpeg 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.
+ *
+ * FFmpeg 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 FFmpeg; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#include "vp9.h"
+#include "vp9dec.h"
+
+static av_always_inline void adapt_prob(uint8_t *p, unsigned ct0, unsigned ct1,
+ int max_count, int update_factor)
+{
+ unsigned ct = ct0 + ct1, p2, p1;
+
+ if (!ct)
+ return;
+
+ update_factor = FASTDIV(update_factor * FFMIN(ct, max_count), max_count);
+ p1 = *p;
+ p2 = ((((int64_t) ct0) << 8) + (ct >> 1)) / ct;
+ p2 = av_clip(p2, 1, 255);
+
+ // (p1 * (256 - update_factor) + p2 * update_factor + 128) >> 8
+ *p = p1 + (((p2 - p1) * update_factor + 128) >> 8);
+}
+
+void ff_vp9_adapt_probs(VP9Context *s)
+{
+ int i, j, k, l, m;
+ ProbContext *p = &s->prob_ctx[s->s.h.framectxid].p;
+ int uf = (s->s.h.keyframe || s->s.h.intraonly || !s->last_keyframe) ? 112 : 128;
+
+ // coefficients
+ for (i = 0; i < 4; i++)
+ for (j = 0; j < 2; j++)
+ for (k = 0; k < 2; k++)
+ for (l = 0; l < 6; l++)
+ for (m = 0; m < 6; m++) {
+ uint8_t *pp = s->prob_ctx[s->s.h.framectxid].coef[i][j][k][l][m];
+ unsigned *e = s->td[0].counts.eob[i][j][k][l][m];
+ unsigned *c = s->td[0].counts.coef[i][j][k][l][m];
+
+ if (l == 0 && m >= 3) // dc only has 3 pt
+ break;
+
+ adapt_prob(&pp[0], e[0], e[1], 24, uf);
+ adapt_prob(&pp[1], c[0], c[1] + c[2], 24, uf);
+ adapt_prob(&pp[2], c[1], c[2], 24, uf);
+ }
+
+ if (s->s.h.keyframe || s->s.h.intraonly) {
+ memcpy(p->skip, s->prob.p.skip, sizeof(p->skip));
+ memcpy(p->tx32p, s->prob.p.tx32p, sizeof(p->tx32p));
+ memcpy(p->tx16p, s->prob.p.tx16p, sizeof(p->tx16p));
+ memcpy(p->tx8p, s->prob.p.tx8p, sizeof(p->tx8p));
+ return;
+ }
+
+ // skip flag
+ for (i = 0; i < 3; i++)
+ adapt_prob(&p->skip[i], s->td[0].counts.skip[i][0],
+ s->td[0].counts.skip[i][1], 20, 128);
+
+ // intra/inter flag
+ for (i = 0; i < 4; i++)
+ adapt_prob(&p->intra[i], s->td[0].counts.intra[i][0],
+ s->td[0].counts.intra[i][1], 20, 128);
+
+ // comppred flag
+ if (s->s.h.comppredmode == PRED_SWITCHABLE) {
+ for (i = 0; i < 5; i++)
+ adapt_prob(&p->comp[i], s->td[0].counts.comp[i][0],
+ s->td[0].counts.comp[i][1], 20, 128);
+ }
+
+ // reference frames
+ if (s->s.h.comppredmode != PRED_SINGLEREF) {
+ for (i = 0; i < 5; i++)
+ adapt_prob(&p->comp_ref[i], s->td[0].counts.comp_ref[i][0],
+ s->td[0].counts.comp_ref[i][1], 20, 128);
+ }
+
+ if (s->s.h.comppredmode != PRED_COMPREF) {
+ for (i = 0; i < 5; i++) {
+ uint8_t *pp = p->single_ref[i];
+ unsigned (*c)[2] = s->td[0].counts.single_ref[i];
+
+ adapt_prob(&pp[0], c[0][0], c[0][1], 20, 128);
+ adapt_prob(&pp[1], c[1][0], c[1][1], 20, 128);
+ }
+ }
+
+ // block partitioning
+ for (i = 0; i < 4; i++)
+ for (j = 0; j < 4; j++) {
+ uint8_t *pp = p->partition[i][j];
+ unsigned *c = s->td[0].counts.partition[i][j];
+
+ adapt_prob(&pp[0], c[0], c[1] + c[2] + c[3], 20, 128);
+ adapt_prob(&pp[1], c[1], c[2] + c[3], 20, 128);
+ adapt_prob(&pp[2], c[2], c[3], 20, 128);
+ }
+
+ // tx size
+ if (s->s.h.txfmmode == TX_SWITCHABLE) {
+ for (i = 0; i < 2; i++) {
+ unsigned *c16 = s->td[0].counts.tx16p[i], *c32 = s->td[0].counts.tx32p[i];
+
+ adapt_prob(&p->tx8p[i], s->td[0].counts.tx8p[i][0],
+ s->td[0].counts.tx8p[i][1], 20, 128);
+ adapt_prob(&p->tx16p[i][0], c16[0], c16[1] + c16[2], 20, 128);
+ adapt_prob(&p->tx16p[i][1], c16[1], c16[2], 20, 128);
+ adapt_prob(&p->tx32p[i][0], c32[0], c32[1] + c32[2] + c32[3], 20, 128);
+ adapt_prob(&p->tx32p[i][1], c32[1], c32[2] + c32[3], 20, 128);
+ adapt_prob(&p->tx32p[i][2], c32[2], c32[3], 20, 128);
+ }
+ }
+
+ // interpolation filter
+ if (s->s.h.filtermode == FILTER_SWITCHABLE) {
+ for (i = 0; i < 4; i++) {
+ uint8_t *pp = p->filter[i];
+ unsigned *c = s->td[0].counts.filter[i];
+
+ adapt_prob(&pp[0], c[0], c[1] + c[2], 20, 128);
+ adapt_prob(&pp[1], c[1], c[2], 20, 128);
+ }
+ }
+
+ // inter modes
+ for (i = 0; i < 7; i++) {
+ uint8_t *pp = p->mv_mode[i];
+ unsigned *c = s->td[0].counts.mv_mode[i];
+
+ adapt_prob(&pp[0], c[2], c[1] + c[0] + c[3], 20, 128);
+ adapt_prob(&pp[1], c[0], c[1] + c[3], 20, 128);
+ adapt_prob(&pp[2], c[1], c[3], 20, 128);
+ }
+
+ // mv joints
+ {
+ uint8_t *pp = p->mv_joint;
+ unsigned *c = s->td[0].counts.mv_joint;
+
+ adapt_prob(&pp[0], c[0], c[1] + c[2] + c[3], 20, 128);
+ adapt_prob(&pp[1], c[1], c[2] + c[3], 20, 128);
+ adapt_prob(&pp[2], c[2], c[3], 20, 128);
+ }
+
+ // mv components
+ for (i = 0; i < 2; i++) {
+ uint8_t *pp;
+ unsigned *c, (*c2)[2], sum;
+
+ adapt_prob(&p->mv_comp[i].sign, s->td[0].counts.mv_comp[i].sign[0],
+ s->td[0].counts.mv_comp[i].sign[1], 20, 128);
+
+ pp = p->mv_comp[i].classes;
+ c = s->td[0].counts.mv_comp[i].classes;
+ sum = c[1] + c[2] + c[3] + c[4] + c[5] +
+ c[6] + c[7] + c[8] + c[9] + c[10];
+ adapt_prob(&pp[0], c[0], sum, 20, 128);
+ sum -= c[1];
+ adapt_prob(&pp[1], c[1], sum, 20, 128);
+ sum -= c[2] + c[3];
+ adapt_prob(&pp[2], c[2] + c[3], sum, 20, 128);
+ adapt_prob(&pp[3], c[2], c[3], 20, 128);
+ sum -= c[4] + c[5];
+ adapt_prob(&pp[4], c[4] + c[5], sum, 20, 128);
+ adapt_prob(&pp[5], c[4], c[5], 20, 128);
+ sum -= c[6];
+ adapt_prob(&pp[6], c[6], sum, 20, 128);
+ adapt_prob(&pp[7], c[7] + c[8], c[9] + c[10], 20, 128);
+ adapt_prob(&pp[8], c[7], c[8], 20, 128);
+ adapt_prob(&pp[9], c[9], c[10], 20, 128);
+
+ adapt_prob(&p->mv_comp[i].class0, s->td[0].counts.mv_comp[i].class0[0],
+ s->td[0].counts.mv_comp[i].class0[1], 20, 128);
+ pp = p->mv_comp[i].bits;
+ c2 = s->td[0].counts.mv_comp[i].bits;
+ for (j = 0; j < 10; j++)
+ adapt_prob(&pp[j], c2[j][0], c2[j][1], 20, 128);
+
+ for (j = 0; j < 2; j++) {
+ pp = p->mv_comp[i].class0_fp[j];
+ c = s->td[0].counts.mv_comp[i].class0_fp[j];
+ adapt_prob(&pp[0], c[0], c[1] + c[2] + c[3], 20, 128);
+ adapt_prob(&pp[1], c[1], c[2] + c[3], 20, 128);
+ adapt_prob(&pp[2], c[2], c[3], 20, 128);
+ }
+ pp = p->mv_comp[i].fp;
+ c = s->td[0].counts.mv_comp[i].fp;
+ adapt_prob(&pp[0], c[0], c[1] + c[2] + c[3], 20, 128);
+ adapt_prob(&pp[1], c[1], c[2] + c[3], 20, 128);
+ adapt_prob(&pp[2], c[2], c[3], 20, 128);
+
+ if (s->s.h.highprecisionmvs) {
+ adapt_prob(&p->mv_comp[i].class0_hp,
+ s->td[0].counts.mv_comp[i].class0_hp[0],
+ s->td[0].counts.mv_comp[i].class0_hp[1], 20, 128);
+ adapt_prob(&p->mv_comp[i].hp, s->td[0].counts.mv_comp[i].hp[0],
+ s->td[0].counts.mv_comp[i].hp[1], 20, 128);
+ }
+ }
+
+ // y intra modes
+ for (i = 0; i < 4; i++) {
+ uint8_t *pp = p->y_mode[i];
+ unsigned *c = s->td[0].counts.y_mode[i], sum, s2;
+
+ sum = c[0] + c[1] + c[3] + c[4] + c[5] + c[6] + c[7] + c[8] + c[9];
+ adapt_prob(&pp[0], c[DC_PRED], sum, 20, 128);
+ sum -= c[TM_VP8_PRED];
+ adapt_prob(&pp[1], c[TM_VP8_PRED], sum, 20, 128);
+ sum -= c[VERT_PRED];
+ adapt_prob(&pp[2], c[VERT_PRED], sum, 20, 128);
+ s2 = c[HOR_PRED] + c[DIAG_DOWN_RIGHT_PRED] + c[VERT_RIGHT_PRED];
+ sum -= s2;
+ adapt_prob(&pp[3], s2, sum, 20, 128);
+ s2 -= c[HOR_PRED];
+ adapt_prob(&pp[4], c[HOR_PRED], s2, 20, 128);
+ adapt_prob(&pp[5], c[DIAG_DOWN_RIGHT_PRED], c[VERT_RIGHT_PRED],
+ 20, 128);
+ sum -= c[DIAG_DOWN_LEFT_PRED];
+ adapt_prob(&pp[6], c[DIAG_DOWN_LEFT_PRED], sum, 20, 128);
+ sum -= c[VERT_LEFT_PRED];
+ adapt_prob(&pp[7], c[VERT_LEFT_PRED], sum, 20, 128);
+ adapt_prob(&pp[8], c[HOR_DOWN_PRED], c[HOR_UP_PRED], 20, 128);
+ }
+
+ // uv intra modes
+ for (i = 0; i < 10; i++) {
+ uint8_t *pp = p->uv_mode[i];
+ unsigned *c = s->td[0].counts.uv_mode[i], sum, s2;
+
+ sum = c[0] + c[1] + c[3] + c[4] + c[5] + c[6] + c[7] + c[8] + c[9];
+ adapt_prob(&pp[0], c[DC_PRED], sum, 20, 128);
+ sum -= c[TM_VP8_PRED];
+ adapt_prob(&pp[1], c[TM_VP8_PRED], sum, 20, 128);
+ sum -= c[VERT_PRED];
+ adapt_prob(&pp[2], c[VERT_PRED], sum, 20, 128);
+ s2 = c[HOR_PRED] + c[DIAG_DOWN_RIGHT_PRED] + c[VERT_RIGHT_PRED];
+ sum -= s2;
+ adapt_prob(&pp[3], s2, sum, 20, 128);
+ s2 -= c[HOR_PRED];
+ adapt_prob(&pp[4], c[HOR_PRED], s2, 20, 128);
+ adapt_prob(&pp[5], c[DIAG_DOWN_RIGHT_PRED], c[VERT_RIGHT_PRED],
+ 20, 128);
+ sum -= c[DIAG_DOWN_LEFT_PRED];
+ adapt_prob(&pp[6], c[DIAG_DOWN_LEFT_PRED], sum, 20, 128);
+ sum -= c[VERT_LEFT_PRED];
+ adapt_prob(&pp[7], c[VERT_LEFT_PRED], sum, 20, 128);
+ adapt_prob(&pp[8], c[HOR_DOWN_PRED], c[HOR_UP_PRED], 20, 128);
+ }
+}
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-20 09:49:16 +0000