Speeding up decode_coeffs().
1080p decoding speedup -- 1.25%, 4K decoding speedup -- 2.5%. Change-Id: I5f02f521cbf7758d4d1886a93bc5b074abdff03d
This commit is contained in:
Dmitry Kovalev
Родитель
aebb361bb7
Коммит
adaec4d0fb
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@ -13,6 +13,7 @@
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#include "vp9/common/vp9_blockd.h"
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#include "vp9/common/vp9_common.h"
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#include "vp9/common/vp9_entropy.h"
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#include "vp9/decoder/vp9_detokenize.h"
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@ -31,29 +32,31 @@
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#define INCREMENT_COUNT(token) \
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do { \
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if (!cm->frame_parallel_decoding_mode) \
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++coef_counts[band][ctx][token]; \
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++coef_counts[band][ctx][token]; \
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} while (0)
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#define WRITE_COEF_CONTINUE(val, token) \
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{ \
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v = (val * dqv) >> dq_shift; \
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dqcoeff[scan[c]] = vp9_read_bit(r) ? -v : v; \
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token_cache[scan[c]] = vp9_pt_energy_class[token]; \
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++c; \
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ctx = get_coef_context(nb, token_cache, c); \
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dqv = dq[1]; \
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continue; \
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}
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static INLINE int read_coeff(const vp9_prob *probs, int n, vp9_reader *r) {
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int i, val = 0;
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for (i = 0; i < n; ++i)
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val = (val << 1) | vp9_read(r, probs[i]);
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return val;
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}
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#define ADJUST_COEF(prob, bits_count) \
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do { \
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val += (vp9_read(r, prob) << bits_count); \
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} while (0)
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static const vp9_tree_index coeff_subtree_high[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 int decode_coefs(VP9_COMMON *cm, const MACROBLOCKD *xd, PLANE_TYPE type,
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tran_low_t *dqcoeff, TX_SIZE tx_size, const int16_t *dq,
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int ctx, const int16_t *scan, const int16_t *nb,
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vp9_reader *r) {
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tran_low_t *dqcoeff, TX_SIZE tx_size, const int16_t *dq,
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int ctx, const int16_t *scan, const int16_t *nb,
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vp9_reader *r) {
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const int max_eob = 16 << (tx_size << 1);
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const FRAME_CONTEXT *const fc = &cm->fc;
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FRAME_COUNTS *const counts = &cm->counts;
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@ -69,11 +72,11 @@ static int decode_coefs(VP9_COMMON *cm, const MACROBLOCKD *xd, PLANE_TYPE type,
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uint8_t token_cache[32 * 32];
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const uint8_t *band_translate = get_band_translate(tx_size);
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const int dq_shift = (tx_size == TX_32X32);
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int v;
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int v, token;
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int16_t dqv = dq[0];
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while (c < max_eob) {
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int val;
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int val = -1;
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band = *band_translate++;
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prob = coef_probs[band][ctx];
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if (!cm->frame_parallel_decoding_mode)
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@ -95,81 +98,46 @@ static int decode_coefs(VP9_COMMON *cm, const MACROBLOCKD *xd, PLANE_TYPE type,
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prob = coef_probs[band][ctx];
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}
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// ONE_CONTEXT_NODE_0_
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if (!vp9_read(r, prob[ONE_CONTEXT_NODE])) {
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INCREMENT_COUNT(ONE_TOKEN);
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WRITE_COEF_CONTINUE(1, ONE_TOKEN);
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}
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INCREMENT_COUNT(TWO_TOKEN);
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prob = vp9_pareto8_full[prob[PIVOT_NODE] - 1];
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if (!vp9_read(r, prob[LOW_VAL_CONTEXT_NODE])) {
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if (!vp9_read(r, prob[TWO_CONTEXT_NODE])) {
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WRITE_COEF_CONTINUE(2, TWO_TOKEN);
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token = ONE_TOKEN;
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val = 1;
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} else {
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INCREMENT_COUNT(TWO_TOKEN);
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token = vp9_read_tree(r, coeff_subtree_high,
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vp9_pareto8_full[prob[PIVOT_NODE] - 1]);
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switch (token) {
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case TWO_TOKEN:
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case THREE_TOKEN:
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case FOUR_TOKEN:
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val = token;
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break;
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case CATEGORY1_TOKEN:
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val = CAT1_MIN_VAL + read_coeff(vp9_cat1_prob, 1, r);
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break;
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case CATEGORY2_TOKEN:
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val = CAT2_MIN_VAL + read_coeff(vp9_cat2_prob, 2, r);
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break;
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case CATEGORY3_TOKEN:
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val = CAT3_MIN_VAL + read_coeff(vp9_cat3_prob, 3, r);
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break;
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case CATEGORY4_TOKEN:
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val = CAT4_MIN_VAL + read_coeff(vp9_cat4_prob, 4, r);
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break;
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case CATEGORY5_TOKEN:
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val = CAT5_MIN_VAL + read_coeff(vp9_cat5_prob, 5, r);
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break;
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case CATEGORY6_TOKEN:
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val = CAT6_MIN_VAL + read_coeff(vp9_cat6_prob, 14, r);
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break;
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}
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if (!vp9_read(r, prob[THREE_CONTEXT_NODE])) {
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WRITE_COEF_CONTINUE(3, THREE_TOKEN);
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}
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WRITE_COEF_CONTINUE(4, FOUR_TOKEN);
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}
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if (!vp9_read(r, prob[HIGH_LOW_CONTEXT_NODE])) {
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if (!vp9_read(r, prob[CAT_ONE_CONTEXT_NODE])) {
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val = CAT1_MIN_VAL;
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ADJUST_COEF(vp9_cat1_prob[0], 0);
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WRITE_COEF_CONTINUE(val, CATEGORY1_TOKEN);
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}
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val = CAT2_MIN_VAL;
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ADJUST_COEF(vp9_cat2_prob[0], 1);
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ADJUST_COEF(vp9_cat2_prob[1], 0);
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WRITE_COEF_CONTINUE(val, CATEGORY2_TOKEN);
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}
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if (!vp9_read(r, prob[CAT_THREEFOUR_CONTEXT_NODE])) {
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if (!vp9_read(r, prob[CAT_THREE_CONTEXT_NODE])) {
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val = CAT3_MIN_VAL;
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ADJUST_COEF(vp9_cat3_prob[0], 2);
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ADJUST_COEF(vp9_cat3_prob[1], 1);
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ADJUST_COEF(vp9_cat3_prob[2], 0);
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WRITE_COEF_CONTINUE(val, CATEGORY3_TOKEN);
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}
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val = CAT4_MIN_VAL;
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ADJUST_COEF(vp9_cat4_prob[0], 3);
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ADJUST_COEF(vp9_cat4_prob[1], 2);
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ADJUST_COEF(vp9_cat4_prob[2], 1);
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ADJUST_COEF(vp9_cat4_prob[3], 0);
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WRITE_COEF_CONTINUE(val, CATEGORY4_TOKEN);
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}
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if (!vp9_read(r, prob[CAT_FIVE_CONTEXT_NODE])) {
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val = CAT5_MIN_VAL;
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ADJUST_COEF(vp9_cat5_prob[0], 4);
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ADJUST_COEF(vp9_cat5_prob[1], 3);
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ADJUST_COEF(vp9_cat5_prob[2], 2);
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ADJUST_COEF(vp9_cat5_prob[3], 1);
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ADJUST_COEF(vp9_cat5_prob[4], 0);
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WRITE_COEF_CONTINUE(val, CATEGORY5_TOKEN);
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}
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val = 0;
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val = (val << 1) | vp9_read(r, vp9_cat6_prob[0]);
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val = (val << 1) | vp9_read(r, vp9_cat6_prob[1]);
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val = (val << 1) | vp9_read(r, vp9_cat6_prob[2]);
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val = (val << 1) | vp9_read(r, vp9_cat6_prob[3]);
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val = (val << 1) | vp9_read(r, vp9_cat6_prob[4]);
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val = (val << 1) | vp9_read(r, vp9_cat6_prob[5]);
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val = (val << 1) | vp9_read(r, vp9_cat6_prob[6]);
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val = (val << 1) | vp9_read(r, vp9_cat6_prob[7]);
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val = (val << 1) | vp9_read(r, vp9_cat6_prob[8]);
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val = (val << 1) | vp9_read(r, vp9_cat6_prob[9]);
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val = (val << 1) | vp9_read(r, vp9_cat6_prob[10]);
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val = (val << 1) | vp9_read(r, vp9_cat6_prob[11]);
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val = (val << 1) | vp9_read(r, vp9_cat6_prob[12]);
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val = (val << 1) | vp9_read(r, vp9_cat6_prob[13]);
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val += CAT6_MIN_VAL;
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WRITE_COEF_CONTINUE(val, CATEGORY6_TOKEN);
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v = (val * dqv) >> dq_shift;
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dqcoeff[scan[c]] = vp9_read_bit(r) ? -v : v;
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token_cache[scan[c]] = vp9_pt_energy_class[token];
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++c;
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ctx = get_coef_context(nb, token_cache, c);
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dqv = dq[1];
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}
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return c;
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