661 строка
23 KiB
C
661 строка
23 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 "vp9/common/vp9_blockd.h"
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#include "vp9/decoder/vp9_onyxd_int.h"
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#include "vpx_mem/vpx_mem.h"
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#include "vpx_ports/mem.h"
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#include "vp9/decoder/vp9_detokenize.h"
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#include "vp9/common/vp9_seg_common.h"
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#define EOB_CONTEXT_NODE 0
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#define ZERO_CONTEXT_NODE 1
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#define ONE_CONTEXT_NODE 2
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#define LOW_VAL_CONTEXT_NODE 3
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#define TWO_CONTEXT_NODE 4
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#define THREE_CONTEXT_NODE 5
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#define HIGH_LOW_CONTEXT_NODE 6
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#define CAT_ONE_CONTEXT_NODE 7
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#define CAT_THREEFOUR_CONTEXT_NODE 8
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#define CAT_THREE_CONTEXT_NODE 9
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#define CAT_FIVE_CONTEXT_NODE 10
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#define CAT1_MIN_VAL 5
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#define CAT2_MIN_VAL 7
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#define CAT3_MIN_VAL 11
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#define CAT4_MIN_VAL 19
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#define CAT5_MIN_VAL 35
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#define CAT6_MIN_VAL 67
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#define CAT1_PROB0 159
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#define CAT2_PROB0 145
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#define CAT2_PROB1 165
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#define CAT3_PROB0 140
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#define CAT3_PROB1 148
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#define CAT3_PROB2 173
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#define CAT4_PROB0 135
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#define CAT4_PROB1 140
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#define CAT4_PROB2 155
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#define CAT4_PROB3 176
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#define CAT5_PROB0 130
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#define CAT5_PROB1 134
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#define CAT5_PROB2 141
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#define CAT5_PROB3 157
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#define CAT5_PROB4 180
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static const vp9_prob cat6_prob[15] = {
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254, 254, 254, 252, 249, 243, 230, 196, 177, 153, 140, 133, 130, 129, 0
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};
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DECLARE_ALIGNED(16, extern const uint8_t, vp9_norm[256]);
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static int get_signed(BOOL_DECODER *br, int value_to_sign) {
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return decode_bool(br, 128) ? -value_to_sign : value_to_sign;
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}
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#define INCREMENT_COUNT(token) \
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do { \
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coef_counts[type][ref][get_coef_band(txfm_size, c)][pt][token]++; \
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pt = vp9_get_coef_context(&recent_energy, token); \
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} while (0)
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#if CONFIG_CODE_NONZEROCOUNT
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#define WRITE_COEF_CONTINUE(val, token) \
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{ \
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qcoeff_ptr[scan[c]] = (int16_t) get_signed(br, val); \
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INCREMENT_COUNT(token); \
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c++; \
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nzc++; \
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continue; \
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}
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#else
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#define WRITE_COEF_CONTINUE(val, token) \
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{ \
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qcoeff_ptr[scan[c]] = (int16_t) get_signed(br, val); \
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INCREMENT_COUNT(token); \
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c++; \
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continue; \
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}
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#endif // CONFIG_CODE_NONZEROCOUNT
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#define ADJUST_COEF(prob, bits_count) \
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do { \
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if (vp9_read(br, prob)) \
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val += (uint16_t)(1 << bits_count);\
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} while (0);
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static int decode_coefs(VP9D_COMP *dx, const MACROBLOCKD *xd,
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BOOL_DECODER* const br, int block_idx,
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PLANE_TYPE type, TX_TYPE tx_type,
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int seg_eob, int16_t *qcoeff_ptr,
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const int *const scan, TX_SIZE txfm_size) {
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ENTROPY_CONTEXT* const A0 = (ENTROPY_CONTEXT *) xd->above_context;
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ENTROPY_CONTEXT* const L0 = (ENTROPY_CONTEXT *) xd->left_context;
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int aidx, lidx;
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ENTROPY_CONTEXT above_ec, left_ec;
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FRAME_CONTEXT *const fc = &dx->common.fc;
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int recent_energy = 0;
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int pt, c = 0;
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vp9_coeff_probs *coef_probs;
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vp9_prob *prob;
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vp9_coeff_count *coef_counts;
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const int ref = xd->mode_info_context->mbmi.ref_frame != INTRA_FRAME;
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#if CONFIG_CODE_NONZEROCOUNT
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uint16_t nzc = 0;
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uint16_t nzc_expected = xd->mode_info_context->mbmi.nzcs[block_idx];
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#endif
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if (xd->mode_info_context->mbmi.sb_type == BLOCK_SIZE_SB64X64) {
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aidx = vp9_block2above_sb64[txfm_size][block_idx];
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lidx = vp9_block2left_sb64[txfm_size][block_idx];
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} else if (xd->mode_info_context->mbmi.sb_type == BLOCK_SIZE_SB32X32) {
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aidx = vp9_block2above_sb[txfm_size][block_idx];
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lidx = vp9_block2left_sb[txfm_size][block_idx];
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} else {
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aidx = vp9_block2above[txfm_size][block_idx];
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lidx = vp9_block2left[txfm_size][block_idx];
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}
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switch (txfm_size) {
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default:
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case TX_4X4:
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above_ec = A0[aidx] != 0;
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left_ec = L0[lidx] != 0;
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coef_probs = fc->coef_probs_4x4;
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coef_counts = fc->coef_counts_4x4;
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break;
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case TX_8X8:
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coef_probs = fc->coef_probs_8x8;
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coef_counts = fc->coef_counts_8x8;
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above_ec = (A0[aidx] + A0[aidx + 1]) != 0;
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left_ec = (L0[lidx] + L0[lidx + 1]) != 0;
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break;
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case TX_16X16:
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coef_probs = fc->coef_probs_16x16;
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coef_counts = fc->coef_counts_16x16;
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if (type == PLANE_TYPE_UV) {
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ENTROPY_CONTEXT *A1 = (ENTROPY_CONTEXT *) (xd->above_context + 1);
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ENTROPY_CONTEXT *L1 = (ENTROPY_CONTEXT *) (xd->left_context + 1);
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above_ec = (A0[aidx] + A0[aidx + 1] + A1[aidx] + A1[aidx + 1]) != 0;
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left_ec = (L0[lidx] + L0[lidx + 1] + L1[lidx] + L1[lidx + 1]) != 0;
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} else {
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above_ec = (A0[aidx] + A0[aidx + 1] + A0[aidx + 2] + A0[aidx + 3]) != 0;
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left_ec = (L0[lidx] + L0[lidx + 1] + L0[lidx + 2] + L0[lidx + 3]) != 0;
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}
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break;
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case TX_32X32:
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coef_probs = fc->coef_probs_32x32;
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coef_counts = fc->coef_counts_32x32;
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if (type == PLANE_TYPE_UV) {
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ENTROPY_CONTEXT *A1 = (ENTROPY_CONTEXT *) (xd->above_context + 1);
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ENTROPY_CONTEXT *L1 = (ENTROPY_CONTEXT *) (xd->left_context + 1);
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ENTROPY_CONTEXT *A2 = (ENTROPY_CONTEXT *) (xd->above_context + 2);
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ENTROPY_CONTEXT *L2 = (ENTROPY_CONTEXT *) (xd->left_context + 2);
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ENTROPY_CONTEXT *A3 = (ENTROPY_CONTEXT *) (xd->above_context + 3);
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ENTROPY_CONTEXT *L3 = (ENTROPY_CONTEXT *) (xd->left_context + 3);
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above_ec = (A0[aidx] + A0[aidx + 1] + A1[aidx] + A1[aidx + 1] +
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A2[aidx] + A2[aidx + 1] + A3[aidx] + A3[aidx + 1]) != 0;
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left_ec = (L0[lidx] + L0[lidx + 1] + L1[lidx] + L1[lidx + 1] +
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L2[lidx] + L2[lidx + 1] + L3[lidx] + L3[lidx + 1]) != 0;
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} else {
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ENTROPY_CONTEXT *A1 = (ENTROPY_CONTEXT *) (xd->above_context + 1);
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ENTROPY_CONTEXT *L1 = (ENTROPY_CONTEXT *) (xd->left_context + 1);
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above_ec = (A0[aidx] + A0[aidx + 1] + A0[aidx + 2] + A0[aidx + 3] +
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A1[aidx] + A1[aidx + 1] + A1[aidx + 2] + A1[aidx + 3]) != 0;
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left_ec = (L0[lidx] + L0[lidx + 1] + L0[lidx + 2] + L0[lidx + 3] +
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L1[lidx] + L1[lidx + 1] + L1[lidx + 2] + L1[lidx + 3]) != 0;
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}
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break;
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}
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VP9_COMBINEENTROPYCONTEXTS(pt, above_ec, left_ec);
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while (1) {
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int val;
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const uint8_t *cat6 = cat6_prob;
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if (c >= seg_eob)
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break;
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#if CONFIG_CODE_NONZEROCOUNT
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if (nzc == nzc_expected)
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break;
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#endif
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prob = coef_probs[type][ref][get_coef_band(txfm_size, c)][pt];
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#if CONFIG_CODE_NONZEROCOUNT == 0
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if (!vp9_read(br, prob[EOB_CONTEXT_NODE]))
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break;
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#endif
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SKIP_START:
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if (c >= seg_eob)
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break;
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#if CONFIG_CODE_NONZEROCOUNT
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if (nzc == nzc_expected)
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break;
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// decode zero node only if there are zeros left
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if (seg_eob - nzc_expected - c + nzc > 0)
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#endif
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if (!vp9_read(br, prob[ZERO_CONTEXT_NODE])) {
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INCREMENT_COUNT(ZERO_TOKEN);
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++c;
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prob = coef_probs[type][ref][get_coef_band(txfm_size, c)][pt];
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goto SKIP_START;
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}
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// ONE_CONTEXT_NODE_0_
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if (!vp9_read(br, prob[ONE_CONTEXT_NODE])) {
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WRITE_COEF_CONTINUE(1, ONE_TOKEN);
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}
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// LOW_VAL_CONTEXT_NODE_0_
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if (!vp9_read(br, prob[LOW_VAL_CONTEXT_NODE])) {
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if (!vp9_read(br, prob[TWO_CONTEXT_NODE])) {
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WRITE_COEF_CONTINUE(2, TWO_TOKEN);
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}
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if (!vp9_read(br, 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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// HIGH_LOW_CONTEXT_NODE_0_
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if (!vp9_read(br, prob[HIGH_LOW_CONTEXT_NODE])) {
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if (!vp9_read(br, prob[CAT_ONE_CONTEXT_NODE])) {
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val = CAT1_MIN_VAL;
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ADJUST_COEF(CAT1_PROB0, 0);
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WRITE_COEF_CONTINUE(val, DCT_VAL_CATEGORY1);
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}
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val = CAT2_MIN_VAL;
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ADJUST_COEF(CAT2_PROB1, 1);
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ADJUST_COEF(CAT2_PROB0, 0);
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WRITE_COEF_CONTINUE(val, DCT_VAL_CATEGORY2);
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}
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// CAT_THREEFOUR_CONTEXT_NODE_0_
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if (!vp9_read(br, prob[CAT_THREEFOUR_CONTEXT_NODE])) {
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if (!vp9_read(br, prob[CAT_THREE_CONTEXT_NODE])) {
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val = CAT3_MIN_VAL;
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ADJUST_COEF(CAT3_PROB2, 2);
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ADJUST_COEF(CAT3_PROB1, 1);
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ADJUST_COEF(CAT3_PROB0, 0);
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WRITE_COEF_CONTINUE(val, DCT_VAL_CATEGORY3);
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}
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val = CAT4_MIN_VAL;
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ADJUST_COEF(CAT4_PROB3, 3);
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ADJUST_COEF(CAT4_PROB2, 2);
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ADJUST_COEF(CAT4_PROB1, 1);
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ADJUST_COEF(CAT4_PROB0, 0);
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WRITE_COEF_CONTINUE(val, DCT_VAL_CATEGORY4);
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}
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// CAT_FIVE_CONTEXT_NODE_0_:
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if (!vp9_read(br, prob[CAT_FIVE_CONTEXT_NODE])) {
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val = CAT5_MIN_VAL;
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ADJUST_COEF(CAT5_PROB4, 4);
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ADJUST_COEF(CAT5_PROB3, 3);
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ADJUST_COEF(CAT5_PROB2, 2);
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ADJUST_COEF(CAT5_PROB1, 1);
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ADJUST_COEF(CAT5_PROB0, 0);
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WRITE_COEF_CONTINUE(val, DCT_VAL_CATEGORY5);
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}
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val = 0;
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while (*cat6) {
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val = (val << 1) | vp9_read(br, *cat6++);
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}
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val += CAT6_MIN_VAL;
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WRITE_COEF_CONTINUE(val, DCT_VAL_CATEGORY6);
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}
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#if CONFIG_CODE_NONZEROCOUNT == 0
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if (c < seg_eob)
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coef_counts[type][ref][get_coef_band(txfm_size, c)][pt][DCT_EOB_TOKEN]++;
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#endif
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A0[aidx] = L0[lidx] = c > 0;
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if (txfm_size >= TX_8X8) {
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A0[aidx + 1] = L0[lidx + 1] = A0[aidx];
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if (txfm_size >= TX_16X16) {
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if (type == PLANE_TYPE_UV) {
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ENTROPY_CONTEXT *A1 = (ENTROPY_CONTEXT *) (xd->above_context + 1);
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ENTROPY_CONTEXT *L1 = (ENTROPY_CONTEXT *) (xd->left_context + 1);
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A1[aidx] = A1[aidx + 1] = L1[lidx] = L1[lidx + 1] = A0[aidx];
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if (txfm_size >= TX_32X32) {
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ENTROPY_CONTEXT *A2 = (ENTROPY_CONTEXT *) (xd->above_context + 2);
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ENTROPY_CONTEXT *L2 = (ENTROPY_CONTEXT *) (xd->left_context + 2);
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ENTROPY_CONTEXT *A3 = (ENTROPY_CONTEXT *) (xd->above_context + 3);
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ENTROPY_CONTEXT *L3 = (ENTROPY_CONTEXT *) (xd->left_context + 3);
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A2[aidx] = A2[aidx + 1] = A3[aidx] = A3[aidx + 1] = A0[aidx];
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L2[lidx] = L2[lidx + 1] = L3[lidx] = L3[lidx + 1] = A0[aidx];
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}
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} else {
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A0[aidx + 2] = A0[aidx + 3] = L0[lidx + 2] = L0[lidx + 3] = A0[aidx];
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if (txfm_size >= TX_32X32) {
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ENTROPY_CONTEXT *A1 = (ENTROPY_CONTEXT *) (xd->above_context + 1);
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ENTROPY_CONTEXT *L1 = (ENTROPY_CONTEXT *) (xd->left_context + 1);
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A1[aidx] = A1[aidx + 1] = A1[aidx + 2] = A1[aidx + 3] = A0[aidx];
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L1[lidx] = L1[lidx + 1] = L1[lidx + 2] = L1[lidx + 3] = A0[aidx];
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}
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}
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}
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}
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return c;
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}
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static int get_eob(MACROBLOCKD* const xd, int segment_id, int eob_max) {
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return vp9_get_segdata(xd, segment_id, SEG_LVL_SKIP) ? 0 : eob_max;
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}
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int vp9_decode_sb_tokens(VP9D_COMP* const pbi,
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MACROBLOCKD* const xd,
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BOOL_DECODER* const bc) {
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const int segment_id = xd->mode_info_context->mbmi.segment_id;
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int i, eobtotal = 0, seg_eob, c;
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switch (xd->mode_info_context->mbmi.txfm_size) {
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case TX_32X32:
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// Luma block
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c = decode_coefs(pbi, xd, bc, 0, PLANE_TYPE_Y_WITH_DC,
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DCT_DCT, get_eob(xd, segment_id, 1024),
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xd->qcoeff, vp9_default_zig_zag1d_32x32, TX_32X32);
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xd->eobs[0] = c;
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eobtotal += c;
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// 16x16 chroma blocks
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seg_eob = get_eob(xd, segment_id, 256);
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for (i = 64; i < 96; i += 16) {
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c = decode_coefs(pbi, xd, bc, i, PLANE_TYPE_UV, DCT_DCT, seg_eob,
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xd->qcoeff + i * 16,
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vp9_default_zig_zag1d_16x16, TX_16X16);
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xd->eobs[i] = c;
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eobtotal += c;
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}
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break;
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case TX_16X16:
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// 16x16 luma blocks
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seg_eob = get_eob(xd, segment_id, 256);
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for (i = 0; i < 64; i += 16) {
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c = decode_coefs(pbi, xd, bc, i, PLANE_TYPE_Y_WITH_DC,
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DCT_DCT, seg_eob, xd->qcoeff + i * 16,
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vp9_default_zig_zag1d_16x16, TX_16X16);
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xd->eobs[i] = c;
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eobtotal += c;
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}
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// 16x16 chroma blocks
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for (i = 64; i < 96; i += 16) {
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c = decode_coefs(pbi, xd, bc, i, PLANE_TYPE_UV, DCT_DCT, seg_eob,
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xd->qcoeff + i * 16,
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vp9_default_zig_zag1d_16x16, TX_16X16);
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xd->eobs[i] = c;
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eobtotal += c;
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}
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break;
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case TX_8X8:
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// 8x8 luma blocks
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seg_eob = get_eob(xd, segment_id, 64);
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for (i = 0; i < 64; i += 4) {
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c = decode_coefs(pbi, xd, bc, i, PLANE_TYPE_Y_WITH_DC,
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DCT_DCT, seg_eob, xd->qcoeff + i * 16,
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vp9_default_zig_zag1d_8x8, TX_8X8);
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xd->eobs[i] = c;
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eobtotal += c;
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}
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// 8x8 chroma blocks
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for (i = 64; i < 96; i += 4) {
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c = decode_coefs(pbi, xd, bc, i, PLANE_TYPE_UV, DCT_DCT, seg_eob,
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xd->qcoeff + i * 16,
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vp9_default_zig_zag1d_8x8, TX_8X8);
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xd->eobs[i] = c;
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eobtotal += c;
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}
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break;
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case TX_4X4:
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// 4x4 luma blocks
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seg_eob = get_eob(xd, segment_id, 16);
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for (i = 0; i < 64; i++) {
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c = decode_coefs(pbi, xd, bc, i, PLANE_TYPE_Y_WITH_DC,
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DCT_DCT, seg_eob, xd->qcoeff + i * 16,
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vp9_default_zig_zag1d_4x4, TX_4X4);
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xd->eobs[i] = c;
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eobtotal += c;
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}
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|
|
// 4x4 chroma blocks
|
|
for (i = 64; i < 96; i++) {
|
|
c = decode_coefs(pbi, xd, bc, i, PLANE_TYPE_UV, DCT_DCT, seg_eob,
|
|
xd->qcoeff + i * 16,
|
|
vp9_default_zig_zag1d_4x4, TX_4X4);
|
|
xd->eobs[i] = c;
|
|
eobtotal += c;
|
|
}
|
|
break;
|
|
default: assert(0);
|
|
}
|
|
|
|
return eobtotal;
|
|
}
|
|
|
|
int vp9_decode_sb64_tokens(VP9D_COMP* const pbi,
|
|
MACROBLOCKD* const xd,
|
|
BOOL_DECODER* const bc) {
|
|
const int segment_id = xd->mode_info_context->mbmi.segment_id;
|
|
int i, eobtotal = 0, seg_eob, c;
|
|
|
|
switch (xd->mode_info_context->mbmi.txfm_size) {
|
|
case TX_32X32:
|
|
// Luma block
|
|
seg_eob = get_eob(xd, segment_id, 1024);
|
|
for (i = 0; i < 256; i += 64) {
|
|
c = decode_coefs(pbi, xd, bc, i, PLANE_TYPE_Y_WITH_DC,
|
|
DCT_DCT, seg_eob, xd->qcoeff + i * 16,
|
|
vp9_default_zig_zag1d_32x32, TX_32X32);
|
|
xd->eobs[i] = c;
|
|
eobtotal += c;
|
|
}
|
|
|
|
// 32x32 chroma blocks
|
|
for (i = 256; i < 384; i += 64) {
|
|
c = decode_coefs(pbi, xd, bc, i, PLANE_TYPE_UV, DCT_DCT, seg_eob,
|
|
xd->qcoeff + i * 16,
|
|
vp9_default_zig_zag1d_32x32, TX_32X32);
|
|
xd->eobs[i] = c;
|
|
eobtotal += c;
|
|
}
|
|
break;
|
|
case TX_16X16:
|
|
// 16x16 luma blocks
|
|
seg_eob = get_eob(xd, segment_id, 256);
|
|
for (i = 0; i < 256; i += 16) {
|
|
c = decode_coefs(pbi, xd, bc, i, PLANE_TYPE_Y_WITH_DC,
|
|
DCT_DCT, seg_eob, xd->qcoeff + i * 16,
|
|
vp9_default_zig_zag1d_16x16, TX_16X16);
|
|
xd->eobs[i] = c;
|
|
eobtotal += c;
|
|
}
|
|
|
|
// 16x16 chroma blocks
|
|
for (i = 256; i < 384; i += 16) {
|
|
c = decode_coefs(pbi, xd, bc, i, PLANE_TYPE_UV, DCT_DCT, seg_eob,
|
|
xd->qcoeff + i * 16,
|
|
vp9_default_zig_zag1d_16x16, TX_16X16);
|
|
xd->eobs[i] = c;
|
|
eobtotal += c;
|
|
}
|
|
break;
|
|
case TX_8X8:
|
|
// 8x8 luma blocks
|
|
seg_eob = get_eob(xd, segment_id, 64);
|
|
for (i = 0; i < 256; i += 4) {
|
|
c = decode_coefs(pbi, xd, bc, i, PLANE_TYPE_Y_WITH_DC,
|
|
DCT_DCT, seg_eob, xd->qcoeff + i * 16,
|
|
vp9_default_zig_zag1d_8x8, TX_8X8);
|
|
xd->eobs[i] = c;
|
|
eobtotal += c;
|
|
}
|
|
|
|
// 8x8 chroma blocks
|
|
for (i = 256; i < 384; i += 4) {
|
|
c = decode_coefs(pbi, xd, bc, i, PLANE_TYPE_UV, DCT_DCT, seg_eob,
|
|
xd->qcoeff + i * 16,
|
|
vp9_default_zig_zag1d_8x8, TX_8X8);
|
|
xd->eobs[i] = c;
|
|
eobtotal += c;
|
|
}
|
|
break;
|
|
case TX_4X4:
|
|
// 4x4 luma blocks
|
|
seg_eob = get_eob(xd, segment_id, 16);
|
|
for (i = 0; i < 256; i++) {
|
|
c = decode_coefs(pbi, xd, bc, i, PLANE_TYPE_Y_WITH_DC,
|
|
DCT_DCT, seg_eob, xd->qcoeff + i * 16,
|
|
vp9_default_zig_zag1d_4x4, TX_4X4);
|
|
xd->eobs[i] = c;
|
|
eobtotal += c;
|
|
}
|
|
|
|
// 4x4 chroma blocks
|
|
for (i = 256; i < 384; i++) {
|
|
c = decode_coefs(pbi, xd, bc, i, PLANE_TYPE_UV, DCT_DCT, seg_eob,
|
|
xd->qcoeff + i * 16,
|
|
vp9_default_zig_zag1d_4x4, TX_4X4);
|
|
xd->eobs[i] = c;
|
|
eobtotal += c;
|
|
}
|
|
break;
|
|
default: assert(0);
|
|
}
|
|
|
|
return eobtotal;
|
|
}
|
|
|
|
static int vp9_decode_mb_tokens_16x16(VP9D_COMP* const pbi,
|
|
MACROBLOCKD* const xd,
|
|
BOOL_DECODER* const bc) {
|
|
const int segment_id = xd->mode_info_context->mbmi.segment_id;
|
|
int i, eobtotal = 0, seg_eob;
|
|
|
|
// Luma block
|
|
int c = decode_coefs(pbi, xd, bc, 0, PLANE_TYPE_Y_WITH_DC,
|
|
get_tx_type(xd, &xd->block[0]),
|
|
get_eob(xd, segment_id, 256),
|
|
xd->qcoeff, vp9_default_zig_zag1d_16x16, TX_16X16);
|
|
xd->eobs[0] = c;
|
|
eobtotal += c;
|
|
|
|
// 8x8 chroma blocks
|
|
seg_eob = get_eob(xd, segment_id, 64);
|
|
for (i = 16; i < 24; i += 4) {
|
|
c = decode_coefs(pbi, xd, bc, i, PLANE_TYPE_UV,
|
|
DCT_DCT, seg_eob, xd->block[i].qcoeff,
|
|
vp9_default_zig_zag1d_8x8, TX_8X8);
|
|
xd->eobs[i] = c;
|
|
eobtotal += c;
|
|
}
|
|
return eobtotal;
|
|
}
|
|
|
|
static int vp9_decode_mb_tokens_8x8(VP9D_COMP* const pbi,
|
|
MACROBLOCKD* const xd,
|
|
BOOL_DECODER* const bc) {
|
|
int c, i, eobtotal = 0, seg_eob;
|
|
const int segment_id = xd->mode_info_context->mbmi.segment_id;
|
|
|
|
// luma blocks
|
|
seg_eob = get_eob(xd, segment_id, 64);
|
|
for (i = 0; i < 16; i += 4) {
|
|
c = decode_coefs(pbi, xd, bc, i, PLANE_TYPE_Y_WITH_DC,
|
|
get_tx_type(xd, xd->block + i),
|
|
seg_eob, xd->block[i].qcoeff,
|
|
vp9_default_zig_zag1d_8x8, TX_8X8);
|
|
xd->eobs[i] = c;
|
|
eobtotal += c;
|
|
}
|
|
|
|
// chroma blocks
|
|
if (xd->mode_info_context->mbmi.mode == I8X8_PRED ||
|
|
xd->mode_info_context->mbmi.mode == SPLITMV) {
|
|
// use 4x4 transform for U, V components in I8X8/splitmv prediction mode
|
|
seg_eob = get_eob(xd, segment_id, 16);
|
|
for (i = 16; i < 24; i++) {
|
|
c = decode_coefs(pbi, xd, bc, i, PLANE_TYPE_UV,
|
|
DCT_DCT, seg_eob, xd->block[i].qcoeff,
|
|
vp9_default_zig_zag1d_4x4, TX_4X4);
|
|
xd->eobs[i] = c;
|
|
eobtotal += c;
|
|
}
|
|
} else {
|
|
for (i = 16; i < 24; i += 4) {
|
|
c = decode_coefs(pbi, xd, bc, i, PLANE_TYPE_UV,
|
|
DCT_DCT, seg_eob, xd->block[i].qcoeff,
|
|
vp9_default_zig_zag1d_8x8, TX_8X8);
|
|
xd->eobs[i] = c;
|
|
eobtotal += c;
|
|
}
|
|
}
|
|
|
|
return eobtotal;
|
|
}
|
|
|
|
static int decode_coefs_4x4(VP9D_COMP *dx, MACROBLOCKD *xd,
|
|
BOOL_DECODER* const bc,
|
|
PLANE_TYPE type, int i, int seg_eob,
|
|
TX_TYPE tx_type, const int *scan) {
|
|
int c = decode_coefs(dx, xd, bc, i, type, tx_type, seg_eob,
|
|
xd->block[i].qcoeff, scan, TX_4X4);
|
|
xd->eobs[i] = c;
|
|
return c;
|
|
}
|
|
|
|
static int decode_coefs_4x4_y(VP9D_COMP *dx, MACROBLOCKD *xd,
|
|
BOOL_DECODER* const bc,
|
|
PLANE_TYPE type, int i, int seg_eob) {
|
|
const TX_TYPE tx_type = (type == PLANE_TYPE_Y_WITH_DC) ?
|
|
get_tx_type(xd, &xd->block[i]) : DCT_DCT;
|
|
const int *scan;
|
|
|
|
switch (tx_type) {
|
|
case ADST_DCT:
|
|
scan = vp9_row_scan_4x4;
|
|
break;
|
|
case DCT_ADST:
|
|
scan = vp9_col_scan_4x4;
|
|
break;
|
|
default:
|
|
scan = vp9_default_zig_zag1d_4x4;
|
|
break;
|
|
}
|
|
|
|
return decode_coefs_4x4(dx, xd, bc, type, i, seg_eob, tx_type, scan);
|
|
}
|
|
|
|
int vp9_decode_coefs_4x4(VP9D_COMP *dx, MACROBLOCKD *xd,
|
|
BOOL_DECODER* const bc,
|
|
PLANE_TYPE type, int i) {
|
|
const int segment_id = xd->mode_info_context->mbmi.segment_id;
|
|
const int seg_eob = get_eob(xd, segment_id, 16);
|
|
|
|
return decode_coefs_4x4_y(dx, xd, bc, type, i, seg_eob);
|
|
}
|
|
|
|
static int decode_mb_tokens_4x4_uv(VP9D_COMP* const dx,
|
|
MACROBLOCKD* const xd,
|
|
BOOL_DECODER* const bc,
|
|
int seg_eob) {
|
|
int eobtotal = 0, i;
|
|
|
|
// chroma blocks
|
|
for (i = 16; i < 24; i++) {
|
|
eobtotal += decode_coefs_4x4(dx, xd, bc, PLANE_TYPE_UV, i, seg_eob,
|
|
DCT_DCT, vp9_default_zig_zag1d_4x4);
|
|
}
|
|
|
|
return eobtotal;
|
|
}
|
|
|
|
int vp9_decode_mb_tokens_4x4_uv(VP9D_COMP* const dx,
|
|
MACROBLOCKD* const xd,
|
|
BOOL_DECODER* const bc) {
|
|
const int segment_id = xd->mode_info_context->mbmi.segment_id;
|
|
const int seg_eob = get_eob(xd, segment_id, 16);
|
|
|
|
return decode_mb_tokens_4x4_uv(dx, xd, bc, seg_eob);
|
|
}
|
|
|
|
static int vp9_decode_mb_tokens_4x4(VP9D_COMP* const dx,
|
|
MACROBLOCKD* const xd,
|
|
BOOL_DECODER* const bc) {
|
|
int i, eobtotal = 0;
|
|
const int segment_id = xd->mode_info_context->mbmi.segment_id;
|
|
const int seg_eob = get_eob(xd, segment_id, 16);
|
|
|
|
// luma blocks
|
|
for (i = 0; i < 16; ++i) {
|
|
eobtotal += decode_coefs_4x4_y(dx, xd, bc,
|
|
PLANE_TYPE_Y_WITH_DC, i, seg_eob);
|
|
}
|
|
|
|
// chroma blocks
|
|
eobtotal += decode_mb_tokens_4x4_uv(dx, xd, bc, seg_eob);
|
|
|
|
return eobtotal;
|
|
}
|
|
|
|
int vp9_decode_mb_tokens(VP9D_COMP* const dx,
|
|
MACROBLOCKD* const xd,
|
|
BOOL_DECODER* const bc) {
|
|
const TX_SIZE tx_size = xd->mode_info_context->mbmi.txfm_size;
|
|
switch (tx_size) {
|
|
case TX_16X16:
|
|
return vp9_decode_mb_tokens_16x16(dx, xd, bc);
|
|
case TX_8X8:
|
|
return vp9_decode_mb_tokens_8x8(dx, xd, bc);
|
|
default:
|
|
assert(tx_size == TX_4X4);
|
|
return vp9_decode_mb_tokens_4x4(dx, xd, bc);
|
|
}
|
|
}
|