8618c70683
Change-Id: Ica1b583d69810182f621de757d2543b2a3b35566
339 lines
11 KiB
C
339 lines
11 KiB
C
/*
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* Copyright (c) 2010 The WebM project authors. All Rights Reserved.
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*
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* Use of this source code is governed by a BSD-style license
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* that can be found in the LICENSE file in the root of the source
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* tree. An additional intellectual property rights grant can be found
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* in the file PATENTS. All contributing project authors may
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* be found in the AUTHORS file in the root of the source tree.
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*/
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#include <math.h>
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#include <stdio.h>
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#include <string.h>
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#include <assert.h>
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#include "vp9/encoder/vp9_onyx_int.h"
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#include "vp9/encoder/vp9_tokenize.h"
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#include "vpx_mem/vpx_mem.h"
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#include "vp9/common/vp9_pred_common.h"
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#include "vp9/common/vp9_seg_common.h"
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#include "vp9/common/vp9_entropy.h"
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static TOKENVALUE dct_value_tokens[DCT_MAX_VALUE * 2];
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const TOKENVALUE *vp9_dct_value_tokens_ptr;
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static int dct_value_cost[DCT_MAX_VALUE * 2];
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const int *vp9_dct_value_cost_ptr;
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// Array indices are identical to previously-existing CONTEXT_NODE indices
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const vp9_tree_index vp9_coef_tree[TREE_SIZE(ENTROPY_TOKENS)] = {
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-EOB_TOKEN, 2, // 0 = EOB
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-ZERO_TOKEN, 4, // 1 = ZERO
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-ONE_TOKEN, 6, // 2 = ONE
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8, 12, // 3 = LOW_VAL
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-TWO_TOKEN, 10, // 4 = TWO
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-THREE_TOKEN, -FOUR_TOKEN, // 5 = THREE
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14, 16, // 6 = HIGH_LOW
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-CATEGORY1_TOKEN, -CATEGORY2_TOKEN, // 7 = CAT_ONE
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18, 20, // 8 = CAT_THREEFOUR
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-CATEGORY3_TOKEN, -CATEGORY4_TOKEN, // 9 = CAT_THREE
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-CATEGORY5_TOKEN, -CATEGORY6_TOKEN // 10 = CAT_FIVE
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};
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// Unconstrained Node Tree
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const vp9_tree_index vp9_coef_con_tree[TREE_SIZE(ENTROPY_TOKENS)] = {
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2, 6, // 0 = LOW_VAL
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-TWO_TOKEN, 4, // 1 = TWO
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-THREE_TOKEN, -FOUR_TOKEN, // 2 = THREE
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8, 10, // 3 = HIGH_LOW
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-CATEGORY1_TOKEN, -CATEGORY2_TOKEN, // 4 = CAT_ONE
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12, 14, // 5 = CAT_THREEFOUR
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-CATEGORY3_TOKEN, -CATEGORY4_TOKEN, // 6 = CAT_THREE
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-CATEGORY5_TOKEN, -CATEGORY6_TOKEN // 7 = CAT_FIVE
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};
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static const vp9_prob Pcat1[] = { 159};
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static const vp9_prob Pcat2[] = { 165, 145};
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static const vp9_prob Pcat3[] = { 173, 148, 140};
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static const vp9_prob Pcat4[] = { 176, 155, 140, 135};
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static const vp9_prob Pcat5[] = { 180, 157, 141, 134, 130};
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static const vp9_prob Pcat6[] = {
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254, 254, 254, 252, 249, 243, 230, 196, 177, 153, 140, 133, 130, 129
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};
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static vp9_tree_index cat1[2], cat2[4], cat3[6], cat4[8], cat5[10], cat6[28];
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static void init_bit_tree(vp9_tree_index *p, int n) {
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int i = 0;
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while (++i < n) {
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p[0] = p[1] = i << 1;
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p += 2;
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}
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p[0] = p[1] = 0;
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}
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static void init_bit_trees() {
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init_bit_tree(cat1, 1);
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init_bit_tree(cat2, 2);
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init_bit_tree(cat3, 3);
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init_bit_tree(cat4, 4);
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init_bit_tree(cat5, 5);
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init_bit_tree(cat6, 14);
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}
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const vp9_extra_bit vp9_extra_bits[ENTROPY_TOKENS] = {
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{0, 0, 0, 0}, // ZERO_TOKEN
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{0, 0, 0, 1}, // ONE_TOKEN
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{0, 0, 0, 2}, // TWO_TOKEN
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{0, 0, 0, 3}, // THREE_TOKEN
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{0, 0, 0, 4}, // FOUR_TOKEN
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{cat1, Pcat1, 1, 5}, // CATEGORY1_TOKEN
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{cat2, Pcat2, 2, 7}, // CATEGORY2_TOKEN
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{cat3, Pcat3, 3, 11}, // CATEGORY3_TOKEN
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{cat4, Pcat4, 4, 19}, // CATEGORY4_TOKEN
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{cat5, Pcat5, 5, 35}, // CATEGORY5_TOKEN
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{cat6, Pcat6, 14, 67}, // CATEGORY6_TOKEN
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{0, 0, 0, 0} // EOB_TOKEN
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};
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struct vp9_token vp9_coef_encodings[ENTROPY_TOKENS];
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void vp9_coef_tree_initialize() {
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init_bit_trees();
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vp9_tokens_from_tree(vp9_coef_encodings, vp9_coef_tree);
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}
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static void fill_value_tokens() {
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TOKENVALUE *const t = dct_value_tokens + DCT_MAX_VALUE;
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const vp9_extra_bit *const e = vp9_extra_bits;
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int i = -DCT_MAX_VALUE;
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int sign = 1;
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do {
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if (!i)
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sign = 0;
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{
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const int a = sign ? -i : i;
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int eb = sign;
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if (a > 4) {
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int j = 4;
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while (++j < 11 && e[j].base_val <= a) {}
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t[i].token = --j;
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eb |= (a - e[j].base_val) << 1;
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} else {
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t[i].token = a;
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}
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t[i].extra = eb;
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}
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// initialize the cost for extra bits for all possible coefficient value.
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{
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int cost = 0;
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const vp9_extra_bit *p = &vp9_extra_bits[t[i].token];
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if (p->base_val) {
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const int extra = t[i].extra;
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const int length = p->len;
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if (length)
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cost += treed_cost(p->tree, p->prob, extra >> 1, length);
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cost += vp9_cost_bit(vp9_prob_half, extra & 1); /* sign */
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dct_value_cost[i + DCT_MAX_VALUE] = cost;
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}
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}
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} while (++i < DCT_MAX_VALUE);
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vp9_dct_value_tokens_ptr = dct_value_tokens + DCT_MAX_VALUE;
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vp9_dct_value_cost_ptr = dct_value_cost + DCT_MAX_VALUE;
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}
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struct tokenize_b_args {
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VP9_COMP *cpi;
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MACROBLOCKD *xd;
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TOKENEXTRA **tp;
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uint8_t *token_cache;
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};
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static void set_entropy_context_b(int plane, int block, BLOCK_SIZE plane_bsize,
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TX_SIZE tx_size, void *arg) {
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struct tokenize_b_args* const args = arg;
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MACROBLOCKD *const xd = args->xd;
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struct macroblock_plane *p = &args->cpi->mb.plane[plane];
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struct macroblockd_plane *pd = &xd->plane[plane];
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int aoff, loff;
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txfrm_block_to_raster_xy(plane_bsize, tx_size, block, &aoff, &loff);
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vp9_set_contexts(xd, pd, plane_bsize, tx_size, p->eobs[block] > 0,
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aoff, loff);
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}
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static INLINE void add_token(TOKENEXTRA **t, const vp9_prob *context_tree,
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int16_t extra, uint8_t token,
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uint8_t skip_eob_node,
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unsigned int *counts) {
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(*t)->token = token;
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(*t)->extra = extra;
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(*t)->context_tree = context_tree;
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(*t)->skip_eob_node = skip_eob_node;
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(*t)++;
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++counts[token];
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}
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static INLINE void add_token_no_extra(TOKENEXTRA **t,
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const vp9_prob *context_tree,
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uint8_t token,
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uint8_t skip_eob_node,
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unsigned int *counts) {
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(*t)->token = token;
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(*t)->context_tree = context_tree;
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(*t)->skip_eob_node = skip_eob_node;
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(*t)++;
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++counts[token];
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}
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static void tokenize_b(int plane, int block, BLOCK_SIZE plane_bsize,
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TX_SIZE tx_size, void *arg) {
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struct tokenize_b_args* const args = arg;
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VP9_COMP *cpi = args->cpi;
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MACROBLOCKD *xd = args->xd;
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TOKENEXTRA **tp = args->tp;
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uint8_t *token_cache = args->token_cache;
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struct macroblock_plane *p = &cpi->mb.plane[plane];
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struct macroblockd_plane *pd = &xd->plane[plane];
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MB_MODE_INFO *mbmi = &xd->mi_8x8[0]->mbmi;
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int pt; /* near block/prev token context index */
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int c;
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TOKENEXTRA *t = *tp; /* store tokens starting here */
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int eob = p->eobs[block];
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const PLANE_TYPE type = pd->plane_type;
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const int16_t *qcoeff = BLOCK_OFFSET(p->qcoeff, block);
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const int segment_id = mbmi->segment_id;
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const int16_t *scan, *nb;
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const scan_order *so;
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const int ref = is_inter_block(mbmi);
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unsigned int (*const counts)[COEFF_CONTEXTS][ENTROPY_TOKENS] =
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cpi->coef_counts[tx_size][type][ref];
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vp9_prob (*const coef_probs)[COEFF_CONTEXTS][UNCONSTRAINED_NODES] =
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cpi->common.fc.coef_probs[tx_size][type][ref];
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unsigned int (*const eob_branch)[COEFF_CONTEXTS] =
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cpi->common.counts.eob_branch[tx_size][type][ref];
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const uint8_t *const band = get_band_translate(tx_size);
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const int seg_eob = get_tx_eob(&cpi->common.seg, segment_id, tx_size);
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int aoff, loff;
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txfrm_block_to_raster_xy(plane_bsize, tx_size, block, &aoff, &loff);
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pt = get_entropy_context(tx_size, pd->above_context + aoff,
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pd->left_context + loff);
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so = get_scan(xd, tx_size, type, block);
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scan = so->scan;
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nb = so->neighbors;
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c = 0;
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while (c < eob) {
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int v = 0;
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int skip_eob = 0;
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v = qcoeff[scan[c]];
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while (!v) {
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add_token_no_extra(&t, coef_probs[band[c]][pt], ZERO_TOKEN, skip_eob,
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counts[band[c]][pt]);
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eob_branch[band[c]][pt] += !skip_eob;
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skip_eob = 1;
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token_cache[scan[c]] = 0;
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++c;
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pt = get_coef_context(nb, token_cache, c);
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v = qcoeff[scan[c]];
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}
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add_token(&t, coef_probs[band[c]][pt],
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vp9_dct_value_tokens_ptr[v].extra,
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(uint8_t)vp9_dct_value_tokens_ptr[v].token,
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(uint8_t)skip_eob,
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counts[band[c]][pt]);
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eob_branch[band[c]][pt] += !skip_eob;
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token_cache[scan[c]] =
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vp9_pt_energy_class[vp9_dct_value_tokens_ptr[v].token];
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++c;
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pt = get_coef_context(nb, token_cache, c);
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}
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if (c < seg_eob) {
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add_token_no_extra(&t, coef_probs[band[c]][pt], EOB_TOKEN, 0,
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counts[band[c]][pt]);
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++eob_branch[band[c]][pt];
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}
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*tp = t;
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vp9_set_contexts(xd, pd, plane_bsize, tx_size, c > 0, aoff, loff);
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}
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struct is_skippable_args {
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MACROBLOCK *x;
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int *skippable;
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};
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static void is_skippable(int plane, int block,
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BLOCK_SIZE plane_bsize, TX_SIZE tx_size,
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void *argv) {
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struct is_skippable_args *args = argv;
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args->skippable[0] &= (!args->x->plane[plane].eobs[block]);
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}
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static int sb_is_skippable(MACROBLOCK *x, BLOCK_SIZE bsize) {
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int result = 1;
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struct is_skippable_args args = {x, &result};
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vp9_foreach_transformed_block(&x->e_mbd, bsize, is_skippable, &args);
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return result;
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}
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int vp9_is_skippable_in_plane(MACROBLOCK *x, BLOCK_SIZE bsize, int plane) {
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int result = 1;
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struct is_skippable_args args = {x, &result};
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vp9_foreach_transformed_block_in_plane(&x->e_mbd, bsize, plane, is_skippable,
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&args);
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return result;
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}
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void vp9_tokenize_sb(VP9_COMP *cpi, TOKENEXTRA **t, int dry_run,
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BLOCK_SIZE bsize) {
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VP9_COMMON *const cm = &cpi->common;
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MACROBLOCKD *const xd = &cpi->mb.e_mbd;
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MB_MODE_INFO *const mbmi = &xd->mi_8x8[0]->mbmi;
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TOKENEXTRA *t_backup = *t;
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const int ctx = vp9_get_skip_context(xd);
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const int skip_inc = !vp9_segfeature_active(&cm->seg, mbmi->segment_id,
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SEG_LVL_SKIP);
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struct tokenize_b_args arg = {cpi, xd, t, cpi->mb.token_cache};
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if (mbmi->skip) {
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if (!dry_run)
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cm->counts.skip[ctx][1] += skip_inc;
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reset_skip_context(xd, bsize);
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if (dry_run)
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*t = t_backup;
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return;
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}
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if (!dry_run) {
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cm->counts.skip[ctx][0] += skip_inc;
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vp9_foreach_transformed_block(xd, bsize, tokenize_b, &arg);
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} else {
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vp9_foreach_transformed_block(xd, bsize, set_entropy_context_b, &arg);
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*t = t_backup;
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}
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}
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void vp9_tokenize_initialize() {
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fill_value_tokens();
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}
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