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authorMatt A. Tobin <mattatobin@localhost.localdomain>2018-02-02 04:16:08 -0500
committerMatt A. Tobin <mattatobin@localhost.localdomain>2018-02-02 04:16:08 -0500
commit5f8de423f190bbb79a62f804151bc24824fa32d8 (patch)
tree10027f336435511475e392454359edea8e25895d /media/libvpx/vp9/decoder/vp9_detokenize.c
parent49ee0794b5d912db1f95dce6eb52d781dc210db5 (diff)
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Add m-esr52 at 52.6.0
Diffstat (limited to 'media/libvpx/vp9/decoder/vp9_detokenize.c')
-rw-r--r--media/libvpx/vp9/decoder/vp9_detokenize.c226
1 files changed, 226 insertions, 0 deletions
diff --git a/media/libvpx/vp9/decoder/vp9_detokenize.c b/media/libvpx/vp9/decoder/vp9_detokenize.c
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+++ b/media/libvpx/vp9/decoder/vp9_detokenize.c
@@ -0,0 +1,226 @@
+/*
+ * Copyright (c) 2010 The WebM project authors. All Rights Reserved.
+ *
+ * Use of this source code is governed by a BSD-style license
+ * that can be found in the LICENSE file in the root of the source
+ * tree. An additional intellectual property rights grant can be found
+ * in the file PATENTS. All contributing project authors may
+ * be found in the AUTHORS file in the root of the source tree.
+ */
+
+#include "vpx_mem/vpx_mem.h"
+#include "vpx_ports/mem.h"
+
+#include "vp9/common/vp9_blockd.h"
+#include "vp9/common/vp9_common.h"
+#include "vp9/common/vp9_entropy.h"
+#if CONFIG_COEFFICIENT_RANGE_CHECKING
+#include "vp9/common/vp9_idct.h"
+#endif
+#include "vp9/common/vp9_scan.h"
+
+#include "vp9/decoder/vp9_detokenize.h"
+
+#define EOB_CONTEXT_NODE 0
+#define ZERO_CONTEXT_NODE 1
+#define ONE_CONTEXT_NODE 2
+#define LOW_VAL_CONTEXT_NODE 0
+#define TWO_CONTEXT_NODE 1
+#define THREE_CONTEXT_NODE 2
+#define HIGH_LOW_CONTEXT_NODE 3
+#define CAT_ONE_CONTEXT_NODE 4
+#define CAT_THREEFOUR_CONTEXT_NODE 5
+#define CAT_THREE_CONTEXT_NODE 6
+#define CAT_FIVE_CONTEXT_NODE 7
+
+#define INCREMENT_COUNT(token) \
+ do { \
+ if (counts) \
+ ++coef_counts[band][ctx][token]; \
+ } while (0)
+
+static INLINE int read_coeff(const vp9_prob *probs, int n, vp9_reader *r) {
+ int i, val = 0;
+ for (i = 0; i < n; ++i)
+ val = (val << 1) | vp9_read(r, probs[i]);
+ return val;
+}
+
+static int decode_coefs(const MACROBLOCKD *xd,
+ PLANE_TYPE type,
+ tran_low_t *dqcoeff, TX_SIZE tx_size, const int16_t *dq,
+ int ctx, const int16_t *scan, const int16_t *nb,
+ vp9_reader *r) {
+ FRAME_COUNTS *counts = xd->counts;
+ const int max_eob = 16 << (tx_size << 1);
+ const FRAME_CONTEXT *const fc = xd->fc;
+ const int ref = is_inter_block(&xd->mi[0]->mbmi);
+ int band, c = 0;
+ const vp9_prob (*coef_probs)[COEFF_CONTEXTS][UNCONSTRAINED_NODES] =
+ fc->coef_probs[tx_size][type][ref];
+ const vp9_prob *prob;
+ unsigned int (*coef_counts)[COEFF_CONTEXTS][UNCONSTRAINED_NODES + 1];
+ unsigned int (*eob_branch_count)[COEFF_CONTEXTS];
+ uint8_t token_cache[32 * 32];
+ const uint8_t *band_translate = get_band_translate(tx_size);
+ const int dq_shift = (tx_size == TX_32X32);
+ int v, token;
+ int16_t dqv = dq[0];
+ const uint8_t *cat1_prob;
+ const uint8_t *cat2_prob;
+ const uint8_t *cat3_prob;
+ const uint8_t *cat4_prob;
+ const uint8_t *cat5_prob;
+ const uint8_t *cat6_prob;
+
+ if (counts) {
+ coef_counts = counts->coef[tx_size][type][ref];
+ eob_branch_count = counts->eob_branch[tx_size][type][ref];
+ }
+
+#if CONFIG_VP9_HIGHBITDEPTH
+ if (xd->bd > VPX_BITS_8) {
+ if (xd->bd == VPX_BITS_10) {
+ cat1_prob = vp9_cat1_prob_high10;
+ cat2_prob = vp9_cat2_prob_high10;
+ cat3_prob = vp9_cat3_prob_high10;
+ cat4_prob = vp9_cat4_prob_high10;
+ cat5_prob = vp9_cat5_prob_high10;
+ cat6_prob = vp9_cat6_prob_high10;
+ } else {
+ cat1_prob = vp9_cat1_prob_high12;
+ cat2_prob = vp9_cat2_prob_high12;
+ cat3_prob = vp9_cat3_prob_high12;
+ cat4_prob = vp9_cat4_prob_high12;
+ cat5_prob = vp9_cat5_prob_high12;
+ cat6_prob = vp9_cat6_prob_high12;
+ }
+ } else {
+ cat1_prob = vp9_cat1_prob;
+ cat2_prob = vp9_cat2_prob;
+ cat3_prob = vp9_cat3_prob;
+ cat4_prob = vp9_cat4_prob;
+ cat5_prob = vp9_cat5_prob;
+ cat6_prob = vp9_cat6_prob;
+ }
+#else
+ cat1_prob = vp9_cat1_prob;
+ cat2_prob = vp9_cat2_prob;
+ cat3_prob = vp9_cat3_prob;
+ cat4_prob = vp9_cat4_prob;
+ cat5_prob = vp9_cat5_prob;
+ cat6_prob = vp9_cat6_prob;
+#endif
+
+ while (c < max_eob) {
+ int val = -1;
+ band = *band_translate++;
+ prob = coef_probs[band][ctx];
+ if (counts)
+ ++eob_branch_count[band][ctx];
+ if (!vp9_read(r, prob[EOB_CONTEXT_NODE])) {
+ INCREMENT_COUNT(EOB_MODEL_TOKEN);
+ break;
+ }
+
+ while (!vp9_read(r, prob[ZERO_CONTEXT_NODE])) {
+ INCREMENT_COUNT(ZERO_TOKEN);
+ dqv = dq[1];
+ token_cache[scan[c]] = 0;
+ ++c;
+ if (c >= max_eob)
+ return c; // zero tokens at the end (no eob token)
+ ctx = get_coef_context(nb, token_cache, c);
+ band = *band_translate++;
+ prob = coef_probs[band][ctx];
+ }
+
+ if (!vp9_read(r, prob[ONE_CONTEXT_NODE])) {
+ INCREMENT_COUNT(ONE_TOKEN);
+ token = ONE_TOKEN;
+ val = 1;
+ } else {
+ INCREMENT_COUNT(TWO_TOKEN);
+ token = vp9_read_tree(r, vp9_coef_con_tree,
+ vp9_pareto8_full[prob[PIVOT_NODE] - 1]);
+ switch (token) {
+ case TWO_TOKEN:
+ case THREE_TOKEN:
+ case FOUR_TOKEN:
+ val = token;
+ break;
+ case CATEGORY1_TOKEN:
+ val = CAT1_MIN_VAL + read_coeff(cat1_prob, 1, r);
+ break;
+ case CATEGORY2_TOKEN:
+ val = CAT2_MIN_VAL + read_coeff(cat2_prob, 2, r);
+ break;
+ case CATEGORY3_TOKEN:
+ val = CAT3_MIN_VAL + read_coeff(cat3_prob, 3, r);
+ break;
+ case CATEGORY4_TOKEN:
+ val = CAT4_MIN_VAL + read_coeff(cat4_prob, 4, r);
+ break;
+ case CATEGORY5_TOKEN:
+ val = CAT5_MIN_VAL + read_coeff(cat5_prob, 5, r);
+ break;
+ case CATEGORY6_TOKEN:
+#if CONFIG_VP9_HIGHBITDEPTH
+ switch (xd->bd) {
+ case VPX_BITS_8:
+ val = CAT6_MIN_VAL + read_coeff(cat6_prob, 14, r);
+ break;
+ case VPX_BITS_10:
+ val = CAT6_MIN_VAL + read_coeff(cat6_prob, 16, r);
+ break;
+ case VPX_BITS_12:
+ val = CAT6_MIN_VAL + read_coeff(cat6_prob, 18, r);
+ break;
+ default:
+ assert(0);
+ return -1;
+ }
+#else
+ val = CAT6_MIN_VAL + read_coeff(cat6_prob, 14, r);
+#endif
+ break;
+ }
+ }
+ v = (val * dqv) >> dq_shift;
+#if CONFIG_COEFFICIENT_RANGE_CHECKING
+#if CONFIG_VP9_HIGHBITDEPTH
+ dqcoeff[scan[c]] = highbd_check_range((vp9_read_bit(r) ? -v : v),
+ xd->bd);
+#else
+ dqcoeff[scan[c]] = check_range(vp9_read_bit(r) ? -v : v);
+#endif // CONFIG_VP9_HIGHBITDEPTH
+#else
+ dqcoeff[scan[c]] = vp9_read_bit(r) ? -v : v;
+#endif // CONFIG_COEFFICIENT_RANGE_CHECKING
+ token_cache[scan[c]] = vp9_pt_energy_class[token];
+ ++c;
+ ctx = get_coef_context(nb, token_cache, c);
+ dqv = dq[1];
+ }
+
+ return c;
+}
+
+int vp9_decode_block_tokens(MACROBLOCKD *xd,
+ int plane, int block,
+ BLOCK_SIZE plane_bsize, int x, int y,
+ TX_SIZE tx_size, vp9_reader *r,
+ int seg_id) {
+ struct macroblockd_plane *const pd = &xd->plane[plane];
+ const int16_t *const dequant = pd->seg_dequant[seg_id];
+ const int ctx = get_entropy_context(tx_size, pd->above_context + x,
+ pd->left_context + y);
+ const scan_order *so = get_scan(xd, tx_size, pd->plane_type, block);
+ const int eob = decode_coefs(xd, pd->plane_type,
+ BLOCK_OFFSET(pd->dqcoeff, block), tx_size,
+ dequant, ctx, so->scan, so->neighbors, r);
+ vp9_set_contexts(xd, pd, plane_bsize, tx_size, eob > 0, x, y);
+ return eob;
+}
+
+