| /* |
| * Copyright (c) 2021, Alliance for Open Media. All rights reserved |
| * |
| * This source code is subject to the terms of the BSD 3-Clause Clear License |
| * and the Alliance for Open Media Patent License 1.0. If the BSD 3-Clause Clear |
| * License was not distributed with this source code in the LICENSE file, you |
| * can obtain it at aomedia.org/license/software-license/bsd-3-c-c/. If the |
| * Alliance for Open Media Patent License 1.0 was not distributed with this |
| * source code in the PATENTS file, you can obtain it at |
| * aomedia.org/license/patent-license/. |
| */ |
| |
| #include "av1/decoder/decodetxb.h" |
| |
| #include "aom_ports/mem.h" |
| #include "av1/common/hr_coding.h" |
| #include "av1/common/idct.h" |
| #include "av1/common/pred_common.h" |
| #include "av1/common/reconintra.h" |
| #include "av1/common/scan.h" |
| #include "av1/common/txb_common.h" |
| #include "av1/decoder/decodemv.h" |
| |
| /*!\brief Read and decode from bitstream an integer value following Exp-Golomb |
| * coding with order k |
| * |
| * \ingroup coefficient_coding |
| * |
| * This function reads and decodes from the bitstream r an integer value which |
| * was coded in Exp-Golomb with order k |
| * |
| * \param[in] xd Pointer to structure holding the data for the |
| * current macroblockd |
| * \param[in] r Pointer to the bitstream reader |
| * \param[in] k Order of Exp-Golomb coding |
| * |
| */ |
| static int read_exp_golomb(MACROBLOCKD *xd, aom_reader *r, int k) { |
| #if CONFIG_BYPASS_IMPROVEMENT |
| int length = aom_read_unary(r, 21, ACCT_INFO("hr")); |
| if (length > 20) { |
| aom_internal_error(xd->error_info, AOM_CODEC_CORRUPT_FRAME, |
| "Invalid length in read_exp_golomb"); |
| } |
| length += k; |
| int x = 1 << length; |
| x += aom_read_literal(r, length, ACCT_INFO("hr")); |
| #else |
| int x = 1; |
| int length = 0; |
| int i = 0; |
| while (!i) { |
| i = aom_read_bit(r, ACCT_INFO("hr")); |
| ++length; |
| if (length > 20) { |
| aom_internal_error(xd->error_info, AOM_CODEC_CORRUPT_FRAME, |
| "Invalid length in read_exp_golomb"); |
| break; |
| } |
| } |
| length += k; |
| for (i = 0; i < length - 1; ++i) { |
| x <<= 1; |
| x += aom_read_bit(r, ACCT_INFO("hr")); |
| } |
| #endif // CONFIG_BYPASS_IMPROVEMENT |
| |
| return x - (1 << k); |
| } |
| |
| #if CONFIG_COEFF_HR_ADAPTIVE |
| /*!\brief Read and decode from the bitstream a Truncated-Rice coded integer |
| * value. |
| * |
| * \ingroup coefficient_coding |
| * |
| * This function reads and decodes from the bitstream a Truncated-Rice coded |
| * integer value, with Rice parameter m. It first reads and decodes the unary |
| * prefix q from the input bitstream r. Given a shorter prefix (q < cmax), it |
| * decodes the remaining offset of the integer using Golomb-Rice coding; |
| * otherwise (i.e., when q == cmax) it shifts to use Exp-Golomb to decode the |
| * remainder value. |
| * |
| * \param[in] xd Pointer to structure holding the data for the |
| * current macroblockd |
| * \param[in] r Pointer to the reader of the bitstream |
| * \param[in] m Parameter of the Rice distribution |
| * \param[in] k Order of the Exp-Golomb code |
| * \param[in] cmax Maximum unary prefix length above which Exp-Golomb |
| * is used instead of Golomb-Rice coding |
| * |
| */ |
| static int read_truncated_rice(MACROBLOCKD *xd, aom_reader *r, int m, int k, |
| int cmax) { |
| #if CONFIG_BYPASS_IMPROVEMENT |
| int q = aom_read_unary(r, cmax, ACCT_INFO("hr")); |
| #else |
| int q = 0; |
| int i = 0; |
| while (!i) { |
| i = aom_read_bit(r, ACCT_INFO("hr")); |
| ++q; |
| if (q > cmax - 1) { |
| aom_internal_error(xd->error_info, AOM_CODEC_CORRUPT_FRAME, |
| "Invalid length in read_truncated_rice"); |
| break; |
| } |
| } |
| #endif // CONFIG_BYPASS_IMPROVEMENT |
| |
| int rem = (q == cmax) ? read_exp_golomb(xd, r, k) |
| : aom_read_literal(r, m, ACCT_INFO("hr")); |
| return rem + (q << m); |
| } |
| |
| /*!\brief Read and decode from the bitstream the high range (HR) value of |
| * the coefficient level using adaptive Truncated-Rice coding. |
| * |
| * \ingroup coefficient_coding |
| * |
| * This function reads and decodes from the bitstream the high range (HR) |
| * value of the coefficient level following adaptive Truncated-Rice coding. |
| * It first derives the Rice parameter m from the input context value ctx. |
| * It then invokes the read_truncated_rice function to decode the HR |
| * coefficient value using Rice parameter m, Exp-Golomb order k = m + 1, |
| * and maximum unary prefix lenght cmax = AOMMIN(m + 4, 6). |
| * |
| * \param[in] xd Pointer to structure holding the data for the |
| * current macroblockd |
| * \param[in] r Pointer to the reader of the bitstream |
| * \param[in] ctx Context value |
| * |
| */ |
| static int read_adaptive_hr(MACROBLOCKD *xd, aom_reader *r, int ctx) { |
| int m = get_adaptive_param(ctx); |
| return read_truncated_rice(xd, r, m, m + 1, AOMMIN(m + 4, 6)); |
| } |
| #endif // CONFIG_COEFF_HR_ADAPTIVE |
| |
| static INLINE int rec_eob_pos(const int eob_token, const int extra) { |
| int eob = av1_eob_group_start[eob_token]; |
| if (eob > 2) { |
| eob += extra; |
| } |
| return eob; |
| } |
| |
| static INLINE int get_dqv(const int32_t *dequant, int coeff_idx, |
| const qm_val_t *iqmatrix) { |
| int dqv = dequant[!!coeff_idx]; |
| if (iqmatrix != NULL) |
| dqv = |
| ((iqmatrix[coeff_idx] * dqv) + (1 << (AOM_QM_BITS - 1))) >> AOM_QM_BITS; |
| return dqv; |
| } |
| |
| static INLINE void read_coeffs_reverse_2d( |
| aom_reader *r, int start_si, int end_si, const int16_t *scan, int bwl, |
| uint8_t *levels, base_lf_cdf_arr base_lf_cdf, br_cdf_arr br_lf_cdf, |
| int plane, base_cdf_arr base_cdf, br_cdf_arr br_cdf |
| #if CONFIG_CHROMA_CODING |
| , |
| base_lf_cdf_arr base_lf_uv_cdf, br_cdf_arr br_lf_uv_cdf, |
| base_cdf_arr base_uv_cdf, br_cdf_arr br_uv_cdf |
| #endif // CONFIG_CHROMA_CODING |
| ) { |
| for (int c = end_si; c >= start_si; --c) { |
| const int pos = scan[c]; |
| int level = 0; |
| const int row = pos >> bwl; |
| const int col = pos - (row << bwl); |
| int limits = get_lf_limits(row, col, 0, plane); |
| #if CONFIG_CHROMA_CODING |
| if (plane > 0) { |
| if (limits) { |
| const int coeff_ctx = |
| get_lower_levels_ctx_lf_2d_chroma(levels, pos, bwl, plane); |
| level += aom_read_symbol(r, base_lf_uv_cdf[coeff_ctx], LF_BASE_SYMBOLS, |
| ACCT_INFO("level", "base_lf_uv_cdf")); |
| if (level > LF_NUM_BASE_LEVELS) { |
| const int br_ctx = get_br_lf_ctx_2d_chroma(levels, pos, bwl); |
| aom_cdf_prob *cdf = br_lf_uv_cdf[br_ctx]; |
| for (int idx = 0; idx < COEFF_BASE_RANGE; idx += BR_CDF_SIZE - 1) { |
| const int k = aom_read_symbol(r, cdf, BR_CDF_SIZE, |
| ACCT_INFO("k", "br_lf_uv_cdf")); |
| level += k; |
| if (k < BR_CDF_SIZE - 1) break; |
| } |
| } |
| } else { |
| const int coeff_ctx = |
| get_lower_levels_ctx_2d_chroma(levels, pos, bwl, plane); |
| level += aom_read_symbol(r, base_uv_cdf[coeff_ctx], 4, |
| ACCT_INFO("level", "base_uv_cdf")); |
| if (level > NUM_BASE_LEVELS) { |
| const int br_ctx = get_br_ctx_2d_chroma(levels, pos, bwl); |
| aom_cdf_prob *cdf = br_uv_cdf[br_ctx]; |
| for (int idx = 0; idx < COEFF_BASE_RANGE; idx += BR_CDF_SIZE - 1) { |
| const int k = aom_read_symbol(r, cdf, BR_CDF_SIZE, |
| ACCT_INFO("k", "br_uv_cdf")); |
| level += k; |
| if (k < BR_CDF_SIZE - 1) break; |
| } |
| } |
| } |
| } else { |
| if (limits) { |
| const int coeff_ctx = get_lower_levels_ctx_lf_2d(levels, pos, bwl); |
| level += aom_read_symbol(r, base_lf_cdf[coeff_ctx], LF_BASE_SYMBOLS, |
| ACCT_INFO("level", "base_lf_cdf")); |
| if (level > LF_NUM_BASE_LEVELS) { |
| const int br_ctx = get_br_lf_ctx_2d(levels, pos, bwl); |
| aom_cdf_prob *cdf = br_lf_cdf[br_ctx]; |
| for (int idx = 0; idx < COEFF_BASE_RANGE; idx += BR_CDF_SIZE - 1) { |
| const int k = aom_read_symbol(r, cdf, BR_CDF_SIZE, |
| ACCT_INFO("k", "br_lf_cdf")); |
| level += k; |
| if (k < BR_CDF_SIZE - 1) break; |
| } |
| } |
| } else { |
| const int coeff_ctx = get_lower_levels_ctx_2d(levels, pos, bwl |
| #if CONFIG_CHROMA_CODING |
| , |
| plane |
| #endif // CONFIG_CHROMA_CODING |
| ); |
| level += aom_read_symbol(r, base_cdf[coeff_ctx], 4, |
| ACCT_INFO("level", "base_cdf")); |
| if (level > NUM_BASE_LEVELS) { |
| const int br_ctx = get_br_ctx_2d(levels, pos, bwl); |
| aom_cdf_prob *cdf = br_cdf[br_ctx]; |
| for (int idx = 0; idx < COEFF_BASE_RANGE; idx += BR_CDF_SIZE - 1) { |
| const int k = |
| aom_read_symbol(r, cdf, BR_CDF_SIZE, ACCT_INFO("k", "br_cdf")); |
| level += k; |
| if (k < BR_CDF_SIZE - 1) break; |
| } |
| } |
| } |
| } |
| #else |
| if (limits) { |
| const int coeff_ctx = get_lower_levels_ctx_lf_2d(levels, pos, bwl); |
| level += aom_read_symbol(r, base_lf_cdf[coeff_ctx], LF_BASE_SYMBOLS, |
| ACCT_INFO("level", "base_lf_cdf")); |
| if (level > LF_NUM_BASE_LEVELS) { |
| const int br_ctx = get_br_lf_ctx_2d(levels, pos, bwl); |
| aom_cdf_prob *cdf = br_lf_cdf[br_ctx]; |
| for (int idx = 0; idx < COEFF_BASE_RANGE; idx += BR_CDF_SIZE - 1) { |
| const int k = |
| aom_read_symbol(r, cdf, BR_CDF_SIZE, ACCT_INFO("k", "br_lf_cdf")); |
| level += k; |
| if (k < BR_CDF_SIZE - 1) break; |
| } |
| } |
| } else { |
| const int coeff_ctx = get_lower_levels_ctx_2d(levels, pos, bwl |
| #if CONFIG_CHROMA_CODING |
| , |
| plane |
| #endif // CONFIG_CHROMA_CODING |
| ); |
| level += aom_read_symbol(r, base_cdf[coeff_ctx], 4, |
| ACCT_INFO("level", "base_cdf")); |
| if (level > NUM_BASE_LEVELS) { |
| const int br_ctx = get_br_ctx_2d(levels, pos, bwl); |
| aom_cdf_prob *cdf = br_cdf[br_ctx]; |
| for (int idx = 0; idx < COEFF_BASE_RANGE; idx += BR_CDF_SIZE - 1) { |
| const int k = |
| aom_read_symbol(r, cdf, BR_CDF_SIZE, ACCT_INFO("k", "br_cdf")); |
| level += k; |
| if (k < BR_CDF_SIZE - 1) break; |
| } |
| } |
| } |
| #endif // CONFIG_CHROMA_CODING |
| levels[get_padded_idx(pos, bwl)] = level; |
| } |
| } |
| |
| static INLINE void read_coeffs_reverse( |
| aom_reader *r, TX_CLASS tx_class, int start_si, int end_si, |
| const int16_t *scan, int bwl, uint8_t *levels, base_lf_cdf_arr base_lf_cdf, |
| br_cdf_arr br_lf_cdf, int plane, base_cdf_arr base_cdf, br_cdf_arr br_cdf |
| #if CONFIG_CHROMA_CODING |
| , |
| base_lf_cdf_arr base_lf_uv_cdf, br_cdf_arr br_lf_uv_cdf, |
| base_cdf_arr base_uv_cdf, br_cdf_arr br_uv_cdf |
| #endif // CONFIG_CHROMA_CODING |
| ) { |
| for (int c = end_si; c >= start_si; --c) { |
| const int pos = scan[c]; |
| int level = 0; |
| const int row = pos >> bwl; |
| const int col = pos - (row << bwl); |
| int limits = get_lf_limits(row, col, tx_class, plane); |
| #if CONFIG_CHROMA_CODING |
| if (plane > 0) { |
| if (limits) { |
| const int coeff_ctx = |
| get_lower_levels_lf_ctx_chroma(levels, pos, bwl, tx_class, plane); |
| level += aom_read_symbol(r, base_lf_uv_cdf[coeff_ctx], LF_BASE_SYMBOLS, |
| ACCT_INFO("level", "base_lf_uv_cdf")); |
| if (level > LF_NUM_BASE_LEVELS) { |
| const int br_ctx = get_br_lf_ctx_chroma(levels, pos, bwl, tx_class); |
| aom_cdf_prob *cdf = br_lf_uv_cdf[br_ctx]; |
| for (int idx = 0; idx < COEFF_BASE_RANGE; idx += BR_CDF_SIZE - 1) { |
| const int k = aom_read_symbol(r, cdf, BR_CDF_SIZE, |
| ACCT_INFO("k", "br_lf_uv_cdf")); |
| level += k; |
| if (k < BR_CDF_SIZE - 1) break; |
| } |
| } |
| } else { |
| const int coeff_ctx = |
| get_lower_levels_ctx_chroma(levels, pos, bwl, tx_class, plane); |
| level += aom_read_symbol(r, base_uv_cdf[coeff_ctx], 4, |
| ACCT_INFO("level", "base_uv_cdf")); |
| if (level > NUM_BASE_LEVELS) { |
| const int br_ctx = get_br_ctx_chroma(levels, pos, bwl, tx_class); |
| aom_cdf_prob *cdf = br_uv_cdf[br_ctx]; |
| for (int idx = 0; idx < COEFF_BASE_RANGE; idx += BR_CDF_SIZE - 1) { |
| const int k = aom_read_symbol(r, cdf, BR_CDF_SIZE, |
| ACCT_INFO("k", "br_uv_cdf")); |
| level += k; |
| if (k < BR_CDF_SIZE - 1) break; |
| } |
| } |
| } |
| } else { |
| if (limits) { |
| const int coeff_ctx = |
| get_lower_levels_lf_ctx(levels, pos, bwl, tx_class); |
| level += aom_read_symbol(r, base_lf_cdf[coeff_ctx], LF_BASE_SYMBOLS, |
| ACCT_INFO("level", "base_lf_cdf")); |
| if (level > LF_NUM_BASE_LEVELS) { |
| const int br_ctx = get_br_lf_ctx(levels, pos, bwl, tx_class); |
| aom_cdf_prob *cdf = br_lf_cdf[br_ctx]; |
| for (int idx = 0; idx < COEFF_BASE_RANGE; idx += BR_CDF_SIZE - 1) { |
| const int k = aom_read_symbol(r, cdf, BR_CDF_SIZE, |
| ACCT_INFO("k", "br_lf_cdf")); |
| level += k; |
| if (k < BR_CDF_SIZE - 1) break; |
| } |
| } |
| } else { |
| const int coeff_ctx = get_lower_levels_ctx(levels, pos, bwl, tx_class |
| #if CONFIG_CHROMA_CODING |
| , |
| plane |
| #endif // CONFIG_CHROMA_CODING |
| ); |
| level += aom_read_symbol(r, base_cdf[coeff_ctx], 4, |
| ACCT_INFO("level", "base_cdf")); |
| if (level > NUM_BASE_LEVELS) { |
| const int br_ctx = get_br_ctx(levels, pos, bwl, tx_class); |
| aom_cdf_prob *cdf = br_cdf[br_ctx]; |
| for (int idx = 0; idx < COEFF_BASE_RANGE; idx += BR_CDF_SIZE - 1) { |
| const int k = |
| aom_read_symbol(r, cdf, BR_CDF_SIZE, ACCT_INFO("k", "br_cdf")); |
| level += k; |
| if (k < BR_CDF_SIZE - 1) break; |
| } |
| } |
| } |
| } |
| #else |
| if (limits) { |
| const int coeff_ctx = get_lower_levels_lf_ctx(levels, pos, bwl, tx_class); |
| level += aom_read_symbol(r, base_lf_cdf[coeff_ctx], LF_BASE_SYMBOLS, |
| ACCT_INFO("level", "base_lf_cdf")); |
| if (level > LF_NUM_BASE_LEVELS) { |
| const int br_ctx = get_br_lf_ctx(levels, pos, bwl, tx_class); |
| aom_cdf_prob *cdf = br_lf_cdf[br_ctx]; |
| for (int idx = 0; idx < COEFF_BASE_RANGE; idx += BR_CDF_SIZE - 1) { |
| const int k = |
| aom_read_symbol(r, cdf, BR_CDF_SIZE, ACCT_INFO("k", "br_lf_cdf")); |
| level += k; |
| if (k < BR_CDF_SIZE - 1) break; |
| } |
| } |
| } else { |
| const int coeff_ctx = get_lower_levels_ctx(levels, pos, bwl, tx_class |
| #if CONFIG_CHROMA_CODING |
| , |
| plane |
| #endif // CONFIG_CHROMA_CODING |
| ); |
| level += aom_read_symbol(r, base_cdf[coeff_ctx], 4, |
| ACCT_INFO("level", "base_cdf")); |
| if (level > NUM_BASE_LEVELS) { |
| const int br_ctx = get_br_ctx(levels, pos, bwl, tx_class); |
| aom_cdf_prob *cdf = br_cdf[br_ctx]; |
| for (int idx = 0; idx < COEFF_BASE_RANGE; idx += BR_CDF_SIZE - 1) { |
| const int k = |
| aom_read_symbol(r, cdf, BR_CDF_SIZE, ACCT_INFO("k", "br_cdf")); |
| level += k; |
| if (k < BR_CDF_SIZE - 1) break; |
| } |
| } |
| } |
| #endif // CONFIG_CHROMA_CODING |
| levels[get_padded_idx(pos, bwl)] = level; |
| } |
| } |
| |
| static INLINE void read_coeffs_forward_2d(aom_reader *r, int start_si, |
| int end_si, const int16_t *scan, |
| int bwl, uint8_t *levels, |
| base_cdf_arr base_cdf, |
| br_cdf_arr br_cdf) { |
| for (int c = start_si; c <= end_si; c++) { |
| const int pos = scan[c]; |
| const int coeff_ctx = get_upper_levels_ctx_2d(levels, pos, bwl); |
| const int nsymbs = 4; |
| int level = aom_read_symbol(r, base_cdf[coeff_ctx], nsymbs, |
| ACCT_INFO("level", "base_cdf")); |
| if (level > NUM_BASE_LEVELS) { |
| const int br_ctx = get_br_ctx_skip(levels, pos, bwl); |
| aom_cdf_prob *cdf = br_cdf[br_ctx]; |
| for (int idx = 0; idx < COEFF_BASE_RANGE; idx += BR_CDF_SIZE - 1) { |
| const int k = |
| aom_read_symbol(r, cdf, BR_CDF_SIZE, ACCT_INFO("k", "br_cdf")); |
| level += k; |
| if (k < BR_CDF_SIZE - 1) break; |
| } |
| } |
| levels[get_padded_idx_left(pos, bwl)] = level; |
| } |
| } |
| |
| // Decode the end-of-block syntax. |
| static INLINE void decode_eob(DecoderCodingBlock *dcb, aom_reader *const r, |
| const int plane, const TX_SIZE tx_size) { |
| MACROBLOCKD *const xd = &dcb->xd; |
| const PLANE_TYPE plane_type = get_plane_type(plane); |
| FRAME_CONTEXT *const ec_ctx = xd->tile_ctx; |
| #if CONFIG_EOB_POS_LUMA |
| const int is_inter = is_inter_block(xd->mi[0], xd->tree_type); |
| const int pl_ctx = get_eob_plane_ctx(plane, is_inter); |
| #else |
| const int pl_ctx = plane_type; |
| #endif // CONFIG_EOB_POS_LUMA |
| |
| const TX_SIZE txs_ctx = get_txsize_entropy_ctx(tx_size); |
| eob_info *eob_data = dcb->eob_data[plane] + dcb->txb_offset[plane]; |
| uint16_t *const eob = &(eob_data->eob); |
| eob_info *bob_data = dcb->bob_data[plane] + dcb->txb_offset[plane]; |
| uint16_t *const bob = &(bob_data->eob); |
| |
| int eob_extra = 0; |
| int eob_pt = 1; |
| const int eob_multi_size = txsize_log2_minus4[tx_size]; |
| switch (eob_multi_size) { |
| case 0: |
| eob_pt = |
| aom_read_symbol(r, ec_ctx->eob_flag_cdf16[pl_ctx], EOB_MAX_SYMS - 6, |
| ACCT_INFO("eob_pt", "eob_multi_size:0")) + |
| 1; |
| break; |
| case 1: |
| eob_pt = |
| aom_read_symbol(r, ec_ctx->eob_flag_cdf32[pl_ctx], EOB_MAX_SYMS - 5, |
| ACCT_INFO("eob_pt", "eob_multi_size:1")) + |
| 1; |
| break; |
| case 2: |
| eob_pt = |
| aom_read_symbol(r, ec_ctx->eob_flag_cdf64[pl_ctx], EOB_MAX_SYMS - 4, |
| ACCT_INFO("eob_pt", "eob_multi_size:2")) + |
| 1; |
| break; |
| case 3: |
| eob_pt = |
| aom_read_symbol(r, ec_ctx->eob_flag_cdf128[pl_ctx], EOB_MAX_SYMS - 3, |
| ACCT_INFO("eob_pt", "eob_multi_size:3")) + |
| 1; |
| break; |
| case 4: |
| eob_pt = |
| aom_read_symbol(r, ec_ctx->eob_flag_cdf256[pl_ctx], EOB_MAX_SYMS - 2, |
| ACCT_INFO("eob_pt", "eob_multi_size:4")) + |
| 1; |
| break; |
| case 5: |
| eob_pt = |
| aom_read_symbol(r, ec_ctx->eob_flag_cdf512[pl_ctx], EOB_MAX_SYMS - 1, |
| ACCT_INFO("eob_pt", "eob_multi_size:5")) + |
| 1; |
| break; |
| case 6: |
| default: |
| eob_pt = |
| aom_read_symbol(r, ec_ctx->eob_flag_cdf1024[pl_ctx], EOB_MAX_SYMS, |
| ACCT_INFO("eob_pt", "eob_multi_size:6")) + |
| 1; |
| break; |
| } |
| const int eob_offset_bits = av1_eob_offset_bits[eob_pt]; |
| if (eob_offset_bits > 0) { |
| const int eob_ctx = eob_pt - 3; |
| int bit = |
| aom_read_symbol(r, ec_ctx->eob_extra_cdf[txs_ctx][plane_type][eob_ctx], |
| 2, ACCT_INFO("eob_extra_cdf")); |
| if (bit) { |
| eob_extra += (1 << (eob_offset_bits - 1)); |
| } |
| #if CONFIG_BYPASS_IMPROVEMENT |
| eob_extra += |
| aom_read_literal(r, eob_offset_bits - 1, ACCT_INFO("eob_extra")); |
| #else |
| for (int i = 1; i < eob_offset_bits; i++) { |
| bit = aom_read_bit(r, ACCT_INFO("eob_offset_bits")); |
| if (bit) { |
| eob_extra += (1 << (eob_offset_bits - 1 - i)); |
| } |
| } |
| #endif // CONFIG_BYPASS_IMPROVEMENT |
| } |
| *eob = rec_eob_pos(eob_pt, eob_extra); |
| *bob = *eob; // escape character |
| #if CONFIG_CONTEXT_DERIVATION |
| if (plane == AOM_PLANE_U) { |
| xd->eob_u = *eob; |
| } |
| #endif // CONFIG_CONTEXT_DERIVATION |
| } |
| |
| uint8_t av1_read_sig_txtype(const AV1_COMMON *const cm, DecoderCodingBlock *dcb, |
| aom_reader *const r, const int blk_row, |
| const int blk_col, const int plane, |
| const TXB_CTX *const txb_ctx, |
| const TX_SIZE tx_size) { |
| MACROBLOCKD *const xd = &dcb->xd; |
| FRAME_CONTEXT *const ec_ctx = xd->tile_ctx; |
| const TX_SIZE txs_ctx = get_txsize_entropy_ctx(tx_size); |
| |
| const int is_inter = is_inter_block(xd->mi[0], xd->tree_type); |
| |
| eob_info *eob_data = dcb->eob_data[plane] + dcb->txb_offset[plane]; |
| uint16_t *const eob = &(eob_data->eob); |
| uint16_t *const max_scan_line = &(eob_data->max_scan_line); |
| *max_scan_line = 0; |
| *eob = 0; |
| |
| #if CCTX_C2_DROPPED |
| if (plane == AOM_PLANE_V && is_cctx_allowed(cm, xd)) { |
| CctxType cctx_type = av1_get_cctx_type(xd, blk_row, blk_col); |
| if (!keep_chroma_c2(cctx_type)) return 0; |
| } |
| #endif // CCTX_C2_DROPPED |
| |
| #if CONFIG_CONTEXT_DERIVATION |
| if (plane == AOM_PLANE_U) { |
| xd->eob_u = 0; |
| } |
| int txb_skip_ctx = txb_ctx->txb_skip_ctx; |
| int all_zero; |
| if (plane == AOM_PLANE_Y || plane == AOM_PLANE_U) { |
| #if CONFIG_TX_SKIP_FLAG_MODE_DEP_CTX |
| MB_MODE_INFO *const mbmi = xd->mi[0]; |
| const int pred_mode_ctx = |
| (is_inter || mbmi->fsc_mode[xd->tree_type == CHROMA_PART]) ? 1 : 0; |
| all_zero = aom_read_symbol( |
| r, ec_ctx->txb_skip_cdf[pred_mode_ctx][txs_ctx][txb_skip_ctx], 2, |
| ACCT_INFO("all_zero", "plane_y_or_u")); |
| #else |
| all_zero = aom_read_symbol(r, ec_ctx->txb_skip_cdf[txs_ctx][txb_skip_ctx], |
| 2, ACCT_INFO("all_zero", "plane_y_or_u")); |
| #endif // CONFIG_TX_SKIP_FLAG_MODE_DEP_CTX |
| } else { |
| txb_skip_ctx += (xd->eob_u_flag ? V_TXB_SKIP_CONTEXT_OFFSET : 0); |
| all_zero = aom_read_symbol(r, ec_ctx->v_txb_skip_cdf[txb_skip_ctx], 2, |
| ACCT_INFO("all_zero", "plane_v")); |
| } |
| #else |
| const int all_zero = |
| aom_read_symbol(r, ec_ctx->txb_skip_cdf[txs_ctx][txb_ctx->txb_skip_ctx], |
| 2, ACCT_INFO("all_zero")); |
| #endif // CONFIG_CONTEXT_DERIVATION |
| |
| #if CONFIG_INSPECTION |
| MB_MODE_INFO *const mbmi = xd->mi[0]; |
| if (plane == 0) { |
| const int txk_type_idx = |
| av1_get_txk_type_index(mbmi->sb_type[0], blk_row, blk_col); |
| mbmi->tx_skip[txk_type_idx] = all_zero; |
| } |
| #endif // CONFIG_INSPECTION |
| |
| #if CONFIG_CONTEXT_DERIVATION |
| if (plane == AOM_PLANE_U) { |
| xd->eob_u_flag = all_zero ? 0 : 1; |
| } |
| #endif // CONFIG_CONTEXT_DERIVATION |
| |
| #if CONFIG_WAIP |
| #if !CONFIG_INSPECTION |
| MB_MODE_INFO *mbmi = xd->mi[0]; |
| #endif // !CONFIG_INSPECTION |
| |
| if (is_inter_block(mbmi, xd->tree_type)) { |
| #if CONFIG_NEW_TX_PARTITION |
| const int txb_idx = get_tx_partition_idx(mbmi, plane); |
| mbmi->is_wide_angle[plane > 0][txb_idx] = 0; |
| mbmi->mapped_intra_mode[plane > 0][txb_idx] = DC_PRED; |
| #else |
| mbmi->is_wide_angle[plane > 0] = 0; |
| mbmi->mapped_intra_mode[plane > 0] = DC_PRED; |
| #endif // CONFIG_NEW_TX_PARTITION |
| } else { |
| PREDICTION_MODE mode = (plane == PLANE_TYPE_Y ? mbmi->mode : mbmi->uv_mode); |
| const int angle_delta = |
| mbmi->angle_delta[plane != AOM_PLANE_Y] * ANGLE_STEP; |
| wide_angle_mapping(mbmi, angle_delta, tx_size, mode, plane); |
| } |
| #endif // CONFIG_WAIP |
| |
| if (all_zero) { |
| *max_scan_line = 0; |
| if (plane == 0) { |
| xd->tx_type_map[blk_row * xd->tx_type_map_stride + blk_col] = DCT_DCT; |
| } |
| return 0; |
| } |
| decode_eob(dcb, r, plane, tx_size); |
| av1_read_tx_type(cm, xd, blk_row, blk_col, tx_size, r, plane, *eob, |
| is_inter ? 0 : *eob); |
| |
| if (plane == AOM_PLANE_U && is_cctx_allowed(cm, xd)) { |
| const int skip_cctx = is_inter ? 0 : (*eob == 1); |
| if (!all_zero && !skip_cctx) { |
| av1_read_cctx_type(cm, xd, blk_row, blk_col, tx_size, r); |
| } else { |
| int row_offset, col_offset; |
| #if CONFIG_EXT_RECUR_PARTITIONS |
| get_chroma_mi_offsets(xd, &row_offset, &col_offset); |
| #else |
| get_chroma_mi_offsets(xd, tx_size, &row_offset, &col_offset); |
| #endif // CONFIG_EXT_RECUR_PARTITIONS |
| update_cctx_array(xd, blk_row, blk_col, row_offset, col_offset, tx_size, |
| CCTX_NONE); |
| } |
| } |
| return 1; |
| } |
| |
| uint8_t av1_read_coeffs_txb_skip(const AV1_COMMON *const cm, |
| DecoderCodingBlock *dcb, aom_reader *const r, |
| const int blk_row, const int blk_col, |
| const int plane, const TX_SIZE tx_size) { |
| MACROBLOCKD *const xd = &dcb->xd; |
| MB_MODE_INFO *const mbmi = xd->mi[0]; |
| FRAME_CONTEXT *const ec_ctx = xd->tile_ctx; |
| struct macroblockd_plane *const pd = &xd->plane[plane]; |
| const PLANE_TYPE plane_type = get_plane_type(plane); |
| |
| const int32_t max_value = (1 << (7 + xd->bd)) - 1; |
| const int32_t min_value = -(1 << (7 + xd->bd)); |
| |
| const int32_t *const dequant = pd->seg_dequant_QTX[mbmi->segment_id]; |
| tran_low_t *const tcoeffs = dcb->dqcoeff_block[plane] + dcb->cb_offset[plane]; |
| const int shift = av1_get_tx_scale(tx_size); |
| const int bwl = get_txb_bwl(tx_size); |
| const int width = get_txb_wide(tx_size); |
| const int height = get_txb_high(tx_size); |
| #if CONFIG_INSPECTION |
| tran_low_t *const tcoeffs_copy = |
| dcb->dqcoeff_block_copy[plane] + dcb->cb_offset[plane]; |
| tran_low_t *const quant_coeffs = |
| dcb->qcoeff_block[plane] + dcb->cb_offset[plane]; |
| tran_low_t *const dequant_values = |
| dcb->dequant_values[plane] + dcb->cb_offset[plane]; |
| // For TX sizes > 32x32, all coeffs are zero except for top-left 32x32. |
| const int coeff_width = AOMMIN(width, 32); |
| const int coeff_height = AOMMIN(height, 32); |
| memset(tcoeffs_copy, 0, sizeof(tran_low_t) * coeff_width * coeff_height); |
| memset(quant_coeffs, 0, sizeof(tran_low_t) * coeff_width * coeff_height); |
| memset(dequant_values, 0, sizeof(tran_low_t) * coeff_width * coeff_height); |
| #endif // CONFIG_INSPECTION |
| int cul_level = 0; |
| int dc_val = 0; |
| uint8_t levels_buf[TX_PAD_2D]; |
| uint8_t *const levels = set_levels(levels_buf, width); |
| int8_t signs_buf[TX_PAD_2D]; |
| int8_t *const signs = set_signs(signs_buf, width); |
| eob_info *eob_data = dcb->eob_data[plane] + dcb->txb_offset[plane]; |
| eob_data->max_scan_line = 0; |
| eob_data->eob = av1_get_max_eob(tx_size); |
| eob_info *bob_data = dcb->bob_data[plane] + dcb->txb_offset[plane]; |
| bob_data->max_scan_line = 0; |
| |
| const TX_TYPE tx_type = |
| av1_get_tx_type(xd, plane_type, blk_row, blk_col, tx_size, |
| cm->features.reduced_tx_set_used); |
| const qm_val_t *iqmatrix = |
| av1_get_iqmatrix(&cm->quant_params, xd, plane, tx_size, tx_type); |
| #if CONFIG_INSPECTION |
| for (int c = 0; c < width * height; c++) { |
| dequant_values[c] = get_dqv(dequant, c, iqmatrix); |
| } |
| #endif // CONFIG_INSPECTION |
| const SCAN_ORDER *const scan_order = get_scan(tx_size, tx_type); |
| const int16_t *const scan = scan_order->scan; |
| #if CONFIG_IMPROVEIDTX |
| const TX_SIZE txs_ctx = get_txsize_entropy_ctx(tx_size); |
| const int size_ctx = AOMMIN(txs_ctx, TX_16X16); |
| #endif // CONFIG_IMPROVEIDTX |
| if (eob_data->eob > 1) { |
| memset(levels_buf, 0, sizeof(*levels_buf) * TX_PAD_2D); |
| memset(signs_buf, 0, sizeof(*signs_buf) * TX_PAD_2D); |
| #if CONFIG_IMPROVEIDTX |
| base_cdf_arr base_cdf = ec_ctx->coeff_base_cdf_idtx[size_ctx]; |
| br_cdf_arr br_cdf = ec_ctx->coeff_br_cdf_idtx[size_ctx]; |
| #else |
| base_cdf_arr base_cdf = ec_ctx->coeff_base_cdf_idtx; |
| br_cdf_arr br_cdf = ec_ctx->coeff_br_cdf_idtx; |
| #endif // CONFIG_IMPROVEIDTX |
| const int bob = av1_get_max_eob(tx_size) - bob_data->eob; |
| { |
| const int pos = scan[bob]; |
| const int coeff_ctx_bob = get_lower_levels_ctx_bob(bwl, height, bob); |
| const int nsymbs_bob = 3; |
| #if CONFIG_IMPROVEIDTX |
| aom_cdf_prob *cdf_bob = |
| ec_ctx->coeff_base_bob_cdf[size_ctx][coeff_ctx_bob]; |
| #else |
| aom_cdf_prob *cdf_bob = ec_ctx->coeff_base_bob_cdf[coeff_ctx_bob]; |
| #endif // CONFIG_IMPROVEIDTX |
| int level = aom_read_symbol(r, cdf_bob, nsymbs_bob, |
| ACCT_INFO("level", "cdf_bob")) + |
| 1; |
| if (level > NUM_BASE_LEVELS) { |
| const int br_ctx = get_br_ctx_skip(levels, pos, bwl); |
| aom_cdf_prob *cdf = br_cdf[br_ctx]; |
| for (int idx = 0; idx < COEFF_BASE_RANGE; idx += BR_CDF_SIZE - 1) { |
| const int k = |
| aom_read_symbol(r, cdf, BR_CDF_SIZE, ACCT_INFO("k", "br_cdf")); |
| level += k; |
| if (k < BR_CDF_SIZE - 1) break; |
| } |
| } |
| levels[get_padded_idx_left(pos, bwl)] = level; |
| } |
| read_coeffs_forward_2d(r, bob + 1, eob_data->eob - 1, scan, bwl, levels, |
| base_cdf, br_cdf); |
| } |
| |
| const int bob = av1_get_max_eob(tx_size) - bob_data->eob; |
| #if CONFIG_COEFF_HR_ADAPTIVE |
| int hr_level_avg = 0; |
| #endif // CONFIG_COEFF_HR_ADAPTIVE |
| #if CONFIG_IMPROVEIDTX |
| for (int c = bob; c < eob_data->eob; c++) { |
| #else |
| for (int c = eob_data->eob - 1; c >= 0; --c) { |
| #endif // CONFIG_IMPROVEIDTX |
| const int pos = scan[c]; |
| #if CONFIG_IMPROVEIDTX |
| const int sign_idx = get_padded_idx_left(pos, bwl); |
| #else |
| const int sign_idx = get_padded_idx(pos, bwl); |
| #endif // CONFIG_IMPROVEIDTX |
| uint8_t sign; |
| tran_low_t level = levels[get_padded_idx_left(pos, bwl)]; |
| if (level) { |
| eob_data->max_scan_line = AOMMAX(eob_data->max_scan_line, pos); |
| int idtx_sign_ctx = get_sign_ctx_skip(signs, levels, pos, bwl); |
| #if CONFIG_IMPROVEIDTX |
| sign = aom_read_symbol(r, ec_ctx->idtx_sign_cdf[size_ctx][idtx_sign_ctx], |
| 2, ACCT_INFO("sign")); |
| #else |
| sign = aom_read_symbol(r, ec_ctx->idtx_sign_cdf[idtx_sign_ctx], 2, |
| ACCT_INFO("sign")); |
| #endif // CONFIG_IMPROVEIDTX |
| signs[sign_idx] = sign > 0 ? -1 : 1; |
| if (level >= MAX_BASE_BR_RANGE) { |
| #if CONFIG_COEFF_HR_ADAPTIVE |
| int hr_level = read_adaptive_hr(xd, r, hr_level_avg); |
| level += hr_level; |
| hr_level_avg = (hr_level + hr_level_avg) >> 1; |
| #else |
| level += read_exp_golomb(xd, r, 0); |
| #endif // CONFIG_COEFF_HR_ADAPTIVE |
| } |
| if (c == 0) dc_val = sign ? -level : level; |
| // Bitmasking to clamp level to valid range: |
| // The valid range for 8/10/12 bit video is at most 14/16/18 bit |
| level &= 0xfffff; |
| cul_level += level; |
| tran_low_t dq_coeff; |
| // Bitmasking to clamp dq_coeff to valid range: |
| // The valid range for 8/10/12 bit video is at most 17/19/21 bits |
| const int64_t dq_coeff_hp = |
| (int64_t)level * get_dqv(dequant, scan[c], iqmatrix) & 0xffffff; |
| dq_coeff = |
| (tran_low_t)(ROUND_POWER_OF_TWO_64(dq_coeff_hp, QUANT_TABLE_BITS)); |
| dq_coeff = dq_coeff >> shift; |
| if (sign) { |
| dq_coeff = -dq_coeff; |
| } |
| tcoeffs[pos] = clamp(dq_coeff, min_value, max_value); |
| #if CONFIG_INSPECTION |
| tcoeffs_copy[pos] = tcoeffs[pos]; |
| quant_coeffs[pos] = sign ? -level : level; |
| #endif // CONFIG_INSPECTION |
| } |
| } |
| cul_level = AOMMIN(COEFF_CONTEXT_MASK, cul_level); |
| set_dc_sign(&cul_level, dc_val); |
| return cul_level; |
| } |
| |
| // This function returns the partial absolute level of the coefficient |
| // with hidden parity. |
| static INLINE tran_low_t read_coeff_hidden(aom_reader *r, TX_CLASS tx_class, |
| const int16_t *scan, int bwl, |
| uint8_t *levels, int parity, |
| base_cdf_arr base_cdf_ph, |
| br_cdf_arr br_cdf_ph) { |
| int q_index; |
| const int pos = scan[0]; |
| int ctx_idx = get_base_ctx_ph(levels, pos, bwl, tx_class); |
| q_index = aom_read_symbol(r, base_cdf_ph[ctx_idx], 4, ACCT_INFO("q_index")); |
| |
| if (q_index > NUM_BASE_LEVELS) { |
| ctx_idx = get_par_br_ctx(levels, pos, bwl, tx_class); |
| aom_cdf_prob *cdf_br = br_cdf_ph[ctx_idx]; |
| for (int idx = 0; idx < COEFF_BASE_RANGE; idx += BR_CDF_SIZE - 1) { |
| const int k = |
| aom_read_symbol(r, cdf_br, BR_CDF_SIZE, ACCT_INFO("k", "cdf_br")); |
| q_index += k; |
| if (k < BR_CDF_SIZE - 1) break; |
| } |
| } |
| assert(q_index <= MAX_BASE_BR_RANGE); |
| uint8_t level = (q_index << 1) + parity; |
| levels[get_padded_idx(pos, bwl)] = level; |
| return level; |
| } |
| |
| uint8_t av1_read_coeffs_txb(const AV1_COMMON *const cm, DecoderCodingBlock *dcb, |
| aom_reader *const r, const int blk_row, |
| const int blk_col, const int plane, |
| const TXB_CTX *const txb_ctx, |
| const TX_SIZE tx_size) { |
| MACROBLOCKD *const xd = &dcb->xd; |
| FRAME_CONTEXT *const ec_ctx = xd->tile_ctx; |
| const int32_t max_value = (1 << (7 + xd->bd)) - 1; |
| const int32_t min_value = -(1 << (7 + xd->bd)); |
| const TX_SIZE txs_ctx = get_txsize_entropy_ctx(tx_size); |
| const PLANE_TYPE plane_type = get_plane_type(plane); |
| MB_MODE_INFO *const mbmi = xd->mi[0]; |
| struct macroblockd_plane *const pd = &xd->plane[plane]; |
| const int32_t *const dequant = pd->seg_dequant_QTX[mbmi->segment_id]; |
| tran_low_t *const tcoeffs = dcb->dqcoeff_block[plane] + dcb->cb_offset[plane]; |
| const int shift = av1_get_tx_scale(tx_size); |
| const int bwl = get_txb_bwl(tx_size); |
| const int width = get_txb_wide(tx_size); |
| const int height = get_txb_high(tx_size); |
| #if CONFIG_INSPECTION |
| tran_low_t *const tcoeffs_copy = |
| dcb->dqcoeff_block_copy[plane] + dcb->cb_offset[plane]; |
| tran_low_t *const quant_coeffs = |
| dcb->qcoeff_block[plane] + dcb->cb_offset[plane]; |
| tran_low_t *const dequant_values = |
| dcb->dequant_values[plane] + dcb->cb_offset[plane]; |
| // For TX sizes > 32x32, all coeffs are zero except for top-left 32x32. |
| const int coeff_width = AOMMIN(width, 32); |
| const int coeff_height = AOMMIN(height, 32); |
| memset(tcoeffs_copy, 0, sizeof(tran_low_t) * coeff_width * coeff_height); |
| memset(quant_coeffs, 0, sizeof(tran_low_t) * coeff_width * coeff_height); |
| memset(dequant_values, 0, sizeof(tran_low_t) * coeff_width * coeff_height); |
| #endif // CONFIG_INSPECTION |
| int cul_level = 0; |
| int dc_val = 0; |
| uint8_t levels_buf[TX_PAD_2D]; |
| uint8_t *const levels = set_levels(levels_buf, width); |
| eob_info *eob_data = dcb->eob_data[plane] + dcb->txb_offset[plane]; |
| uint16_t *const eob = &(eob_data->eob); |
| uint16_t *const max_scan_line = &(eob_data->max_scan_line); |
| |
| #if DEBUG_EXTQUANT |
| fprintf(cm->fDecCoeffLog, |
| "\nmi_row = %d, mi_col = %d, blk_row = %d," |
| " blk_col = %d, plane = %d, tx_size = %d ", |
| xd->mi_row, xd->mi_col, blk_row, blk_col, plane, tx_size); |
| #endif |
| |
| const TX_TYPE tx_type = |
| av1_get_tx_type(xd, plane_type, blk_row, blk_col, tx_size, |
| cm->features.reduced_tx_set_used); |
| const TX_CLASS tx_class = tx_type_to_class[get_primary_tx_type(tx_type)]; |
| const qm_val_t *iqmatrix = |
| av1_get_iqmatrix(&cm->quant_params, xd, plane, tx_size, tx_type); |
| #if CONFIG_INSPECTION |
| for (int c = 0; c < width * height; c++) { |
| dequant_values[c] = get_dqv(dequant, c, iqmatrix); |
| } |
| #endif // CONFIG_INSPECTION |
| const SCAN_ORDER *const scan_order = get_scan(tx_size, tx_type); |
| const int16_t *const scan = scan_order->scan; |
| |
| // read sec_tx_type here |
| // Only y plane's sec_tx_type is transmitted |
| if ((plane == AOM_PLANE_Y) && |
| (is_inter_block(mbmi, xd->tree_type) |
| ? (*eob > 3 && cm->seq_params.enable_inter_ist) |
| : (*eob != 1 && cm->seq_params.enable_ist))) { |
| av1_read_sec_tx_type(cm, xd, blk_row, blk_col, tx_size, eob, r); |
| } |
| // |
| if (*eob > 1) { |
| memset(levels_buf, 0, sizeof(*levels_buf) * TX_PAD_2D); |
| } |
| |
| #if DEBUG_EXTQUANT |
| fprintf(cm->fDecCoeffLog, "tx_type = %d, eob = %d\n", tx_type, *eob); |
| #endif |
| |
| { |
| // Read the non-zero coefficient with scan index eob-1 |
| // TODO(angiebird): Put this into a function |
| const int c = *eob - 1; |
| const int pos = scan[c]; |
| const int coeff_ctx = get_lower_levels_ctx_eob(bwl, height, c); |
| |
| int level = 0; |
| const int row = pos >> bwl; |
| const int col = pos - (row << bwl); |
| int limits = get_lf_limits(row, col, tx_class, plane); |
| #if CONFIG_CHROMA_CODING |
| if (plane > 0) { |
| if (limits) { |
| aom_cdf_prob *cdf = ec_ctx->coeff_base_lf_eob_uv_cdf[coeff_ctx]; |
| level += |
| aom_read_symbol(r, cdf, LF_BASE_SYMBOLS - 1, |
| ACCT_INFO("level", "coeff_base_lf_eob_uv_cdf")) + |
| 1; |
| if (level > LF_NUM_BASE_LEVELS) { |
| const int br_ctx = get_br_ctx_lf_eob_chroma(pos, tx_class); |
| cdf = ec_ctx->coeff_br_lf_uv_cdf[br_ctx]; |
| for (int idx = 0; idx < COEFF_BASE_RANGE; idx += BR_CDF_SIZE - 1) { |
| const int k = aom_read_symbol(r, cdf, BR_CDF_SIZE, |
| ACCT_INFO("k", "coeff_br_lf_uv_cdf")); |
| level += k; |
| if (k < BR_CDF_SIZE - 1) break; |
| } |
| } |
| } else { |
| aom_cdf_prob *cdf = ec_ctx->coeff_base_eob_uv_cdf[coeff_ctx]; |
| level += aom_read_symbol(r, cdf, 3, |
| ACCT_INFO("level", "coeff_base_eob_uv_cdf")) + |
| 1; |
| if (level > NUM_BASE_LEVELS) { |
| const int br_ctx = 0; /* get_lf_ctx_eob */ |
| cdf = ec_ctx->coeff_br_uv_cdf[br_ctx]; |
| for (int idx = 0; idx < COEFF_BASE_RANGE; idx += BR_CDF_SIZE - 1) { |
| const int k = aom_read_symbol(r, cdf, BR_CDF_SIZE, |
| ACCT_INFO("k", "coeff_br_uv_cdf")); |
| level += k; |
| if (k < BR_CDF_SIZE - 1) break; |
| } |
| } |
| } |
| } else { |
| if (limits) { |
| aom_cdf_prob *cdf = ec_ctx->coeff_base_lf_eob_cdf[txs_ctx][coeff_ctx]; |
| level += aom_read_symbol(r, cdf, LF_BASE_SYMBOLS - 1, |
| ACCT_INFO("level", "coeff_base_lf_eob_cdf")) + |
| 1; |
| if (level > LF_NUM_BASE_LEVELS) { |
| const int br_ctx = get_br_ctx_lf_eob(pos, tx_class); |
| cdf = ec_ctx->coeff_br_lf_cdf[br_ctx]; |
| for (int idx = 0; idx < COEFF_BASE_RANGE; idx += BR_CDF_SIZE - 1) { |
| const int k = aom_read_symbol(r, cdf, BR_CDF_SIZE, |
| ACCT_INFO("k", "coeff_br_lf_cdf")); |
| level += k; |
| if (k < BR_CDF_SIZE - 1) break; |
| } |
| } |
| } else { |
| aom_cdf_prob *cdf = ec_ctx->coeff_base_eob_cdf[txs_ctx][coeff_ctx]; |
| level += aom_read_symbol(r, cdf, 3, |
| ACCT_INFO("level", "coeff_base_eob_cdf")) + |
| 1; |
| if (level > NUM_BASE_LEVELS) { |
| const int br_ctx = 0; /* get_lf_ctx_eob */ |
| cdf = ec_ctx->coeff_br_cdf[br_ctx]; |
| for (int idx = 0; idx < COEFF_BASE_RANGE; idx += BR_CDF_SIZE - 1) { |
| const int k = aom_read_symbol(r, cdf, BR_CDF_SIZE, |
| ACCT_INFO("k", "coeff_br_cdf")); |
| level += k; |
| if (k < BR_CDF_SIZE - 1) break; |
| } |
| } |
| } |
| } |
| #else |
| if (limits) { |
| aom_cdf_prob *cdf = |
| ec_ctx->coeff_base_lf_eob_cdf[txs_ctx][plane_type][coeff_ctx]; |
| level += aom_read_symbol(r, cdf, LF_BASE_SYMBOLS - 1, |
| ACCT_INFO("level", "coeff_base_lf_eob_cdf")) + |
| 1; |
| if (level > LF_NUM_BASE_LEVELS) { |
| const int br_ctx = get_br_ctx_lf_eob(pos, tx_class); |
| cdf = ec_ctx->coeff_br_lf_cdf[plane_type][br_ctx]; |
| for (int idx = 0; idx < COEFF_BASE_RANGE; idx += BR_CDF_SIZE - 1) { |
| const int k = aom_read_symbol(r, cdf, BR_CDF_SIZE, |
| ACCT_INFO("k", "coeff_br_lf_cdf")); |
| level += k; |
| if (k < BR_CDF_SIZE - 1) break; |
| } |
| } |
| } else { |
| aom_cdf_prob *cdf = |
| ec_ctx->coeff_base_eob_cdf[txs_ctx][plane_type][coeff_ctx]; |
| level += |
| aom_read_symbol(r, cdf, 3, ACCT_INFO("level", "coeff_base_eob_cdf")) + |
| 1; |
| if (level > NUM_BASE_LEVELS) { |
| const int br_ctx = 0; /* get_br_ctx_eob */ |
| cdf = ec_ctx->coeff_br_cdf[plane_type][br_ctx]; |
| for (int idx = 0; idx < COEFF_BASE_RANGE; idx += BR_CDF_SIZE - 1) { |
| const int k = aom_read_symbol(r, cdf, BR_CDF_SIZE, |
| ACCT_INFO("k", "coeff_br_cdf")); |
| level += k; |
| if (k < BR_CDF_SIZE - 1) break; |
| } |
| } |
| } |
| #endif // CONFIG_CHROMA_CODING |
| levels[get_padded_idx(pos, bwl)] = level; |
| } |
| bool enable_parity_hiding = |
| cm->features.allow_parity_hiding && !xd->lossless[mbmi->segment_id] && |
| plane == PLANE_TYPE_Y && |
| #if CONFIG_IMPROVEIDTX |
| ph_allowed_tx_types[get_primary_tx_type(tx_type)] && (*eob > PHTHRESH); |
| #else |
| get_primary_tx_type(tx_type) < IDTX; |
| #endif // CONFIG_IMPROVEIDTX |
| int num_nz = 0, sum_abs1 = 0; |
| bool is_hidden = false; |
| if (*eob > 1) { |
| #if CONFIG_CHROMA_CODING |
| base_lf_cdf_arr base_lf_cdf = ec_ctx->coeff_base_lf_cdf[txs_ctx]; |
| br_cdf_arr br_lf_cdf = ec_ctx->coeff_br_lf_cdf; |
| base_cdf_arr base_cdf = ec_ctx->coeff_base_cdf[txs_ctx]; |
| br_cdf_arr br_cdf = ec_ctx->coeff_br_cdf; |
| base_lf_cdf_arr base_lf_uv_cdf = ec_ctx->coeff_base_lf_uv_cdf; |
| br_cdf_arr br_lf_uv_cdf = ec_ctx->coeff_br_lf_uv_cdf; |
| base_cdf_arr base_uv_cdf = ec_ctx->coeff_base_uv_cdf; |
| br_cdf_arr br_uv_cdf = ec_ctx->coeff_br_uv_cdf; |
| #else |
| base_lf_cdf_arr base_lf_cdf = |
| ec_ctx->coeff_base_lf_cdf[txs_ctx][plane_type]; |
| br_cdf_arr br_lf_cdf = ec_ctx->coeff_br_lf_cdf[plane_type]; |
| base_cdf_arr base_cdf = ec_ctx->coeff_base_cdf[txs_ctx][plane_type]; |
| br_cdf_arr br_cdf = ec_ctx->coeff_br_cdf[plane_type]; |
| #endif // CONFIG_CHROMA_CODING |
| |
| if (tx_class == TX_CLASS_2D) { |
| read_coeffs_reverse_2d(r, 1, *eob - 2, scan, bwl, levels, base_lf_cdf, |
| br_lf_cdf, plane, base_cdf, br_cdf |
| #if CONFIG_CHROMA_CODING |
| , |
| base_lf_uv_cdf, br_lf_uv_cdf, base_uv_cdf, |
| br_uv_cdf |
| #endif // CONFIG_CHROMA_CODING |
| ); |
| if (enable_parity_hiding) { |
| for (int si = *eob - 1; si > 0; --si) { |
| int pos = scan[si]; |
| int level = |
| AOMMIN(levels[get_padded_idx(pos, bwl)], MAX_BASE_BR_RANGE); |
| if (level) { |
| ++num_nz; |
| sum_abs1 += level; |
| } |
| } |
| is_hidden = num_nz >= PHTHRESH; |
| } |
| if (is_hidden) { |
| read_coeff_hidden(r, tx_class, scan, bwl, levels, (sum_abs1 & 1), |
| ec_ctx->coeff_base_ph_cdf, ec_ctx->coeff_br_ph_cdf); |
| } else { |
| read_coeffs_reverse(r, tx_class, 0, 0, scan, bwl, levels, base_lf_cdf, |
| br_lf_cdf, plane, base_cdf, br_cdf |
| #if CONFIG_CHROMA_CODING |
| , |
| base_lf_uv_cdf, br_lf_uv_cdf, base_uv_cdf, br_uv_cdf |
| #endif // CONFIG_CHROMA_CODING |
| ); |
| } |
| } else { |
| read_coeffs_reverse(r, tx_class, 1, *eob - 2, scan, bwl, levels, |
| base_lf_cdf, br_lf_cdf, plane, base_cdf, br_cdf |
| #if CONFIG_CHROMA_CODING |
| , |
| base_lf_uv_cdf, br_lf_uv_cdf, base_uv_cdf, br_uv_cdf |
| #endif // CONFIG_CHROMA_CODING |
| ); |
| if (enable_parity_hiding) { |
| for (int si = *eob - 1; si > 0; --si) { |
| int pos = scan[si]; |
| int level = |
| AOMMIN(levels[get_padded_idx(pos, bwl)], MAX_BASE_BR_RANGE); |
| if (level) { |
| ++num_nz; |
| sum_abs1 += level; |
| } |
| } |
| is_hidden = num_nz >= PHTHRESH; |
| } |
| if (is_hidden) { |
| read_coeff_hidden(r, tx_class, scan, bwl, levels, (sum_abs1 & 1), |
| ec_ctx->coeff_base_ph_cdf, ec_ctx->coeff_br_ph_cdf); |
| } else { |
| read_coeffs_reverse(r, tx_class, 0, 0, scan, bwl, levels, base_lf_cdf, |
| br_lf_cdf, plane, base_cdf, br_cdf |
| #if CONFIG_CHROMA_CODING |
| , |
| base_lf_uv_cdf, br_lf_uv_cdf, base_uv_cdf, br_uv_cdf |
| #endif // CONFIG_CHROMA_CODING |
| ); |
| } |
| } |
| } |
| |
| #if CONFIG_COEFF_HR_ADAPTIVE |
| int hr_level_avg = 0; |
| #endif // CONFIG_COEFF_HR_ADAPTIVE |
| #if CONFIG_IMPROVEIDTX || CONFIG_COEFF_HR_ADAPTIVE |
| for (int c = *eob - 1; c >= 0; --c) { |
| #else |
| for (int c = 0; c < *eob; ++c) { |
| #endif // CONFIG_IMPROVEIDTX || CONFIG_COEFF_HR_ADAPTIVE |
| const int pos = scan[c]; |
| uint8_t sign; |
| tran_low_t level = levels[get_padded_idx(pos, bwl)]; |
| #if CONFIG_IMPROVEIDTX |
| const int tmp_sign_idx = pos; |
| #else |
| const int tmp_sign_idx = 0; |
| #endif // CONFIG_IMPROVEIDTX |
| #if CONFIG_CONTEXT_DERIVATION |
| if (plane == AOM_PLANE_U) { |
| xd->tmp_sign[pos] = 0; |
| } |
| #endif // CONFIG_CONTEXT_DERIVATION |
| if (level) { |
| *max_scan_line = AOMMAX(*max_scan_line, pos); |
| #if CONFIG_IMPROVEIDTX |
| const int row = pos >> bwl; |
| const int col = pos - (row << bwl); |
| const bool dc_2dtx = (c == 0); |
| const bool dc_hor = (col == 0) && tx_class == TX_CLASS_HORIZ; |
| const bool dc_ver = (row == 0) && tx_class == TX_CLASS_VERT; |
| if (dc_2dtx || dc_hor || dc_ver) { |
| const int dc_sign_ctx = dc_2dtx ? txb_ctx->dc_sign_ctx : 0; |
| #else |
| if (c == 0) { |
| const int dc_sign_ctx = txb_ctx->dc_sign_ctx; |
| #endif // CONFIG_IMPROVEIDTX |
| #if CONFIG_CONTEXT_DERIVATION |
| if (plane == AOM_PLANE_Y || plane == AOM_PLANE_U) { |
| #if CONFIG_IMPROVEIDTX |
| sign = aom_read_symbol( |
| r, |
| ec_ctx->dc_sign_cdf[plane_type][is_hidden ? 1 : 0][dc_sign_ctx], |
| 2, ACCT_INFO("sign", "dc_sign_cdf", "plane_y_or_u")); |
| #else |
| sign = aom_read_symbol( |
| r, ec_ctx->dc_sign_cdf[plane_type][dc_sign_ctx], 2, |
| ACCT_INFO("sign", "dc_sign_cdf", "plane_y_or_u")); |
| #endif // CONFIG_IMPROVEIDTX |
| } else { |
| int32_t tmp_sign = 0; |
| if (c < xd->eob_u) tmp_sign = xd->tmp_sign[tmp_sign_idx]; |
| sign = |
| aom_read_symbol(r, ec_ctx->v_dc_sign_cdf[tmp_sign][dc_sign_ctx], |
| 2, ACCT_INFO("sign", "v_dc_sign_cdf", "plane_v")); |
| } |
| if (plane == AOM_PLANE_U) xd->tmp_sign[tmp_sign_idx] = (sign ? 2 : 1); |
| #else |
| sign = aom_read_symbol(r, ec_ctx->dc_sign_cdf[plane_type][dc_sign_ctx], |
| 2, ACCT_INFO("sign", "dc_sign_cdf")); |
| #endif // CONFIG_CONTEXT_DERIVATION |
| } else { |
| #if CONFIG_CONTEXT_DERIVATION |
| if (plane == AOM_PLANE_Y || plane == AOM_PLANE_U) |
| sign = aom_read_bit(r, ACCT_INFO("sign", "plane_y_or_u")); |
| else { |
| int32_t tmp_sign = 0; |
| if (c < xd->eob_u) tmp_sign = xd->tmp_sign[pos]; |
| sign = aom_read_symbol(r, ec_ctx->v_ac_sign_cdf[tmp_sign], 2, |
| ACCT_INFO("sign", "v_ac_sign_cdf", "plane_v")); |
| } |
| if (plane == AOM_PLANE_U) xd->tmp_sign[pos] = (sign ? 2 : 1); |
| #else |
| sign = aom_read_bit(r, ACCT_INFO("sign")); |
| #endif // CONFIG_CONTEXT_DERIVATION |
| } |
| if (is_hidden && c == 0) { |
| if (level >= (MAX_BASE_BR_RANGE << 1)) { |
| #if CONFIG_COEFF_HR_ADAPTIVE |
| int hr_level = (read_adaptive_hr(xd, r, hr_level_avg >> 1) << 1); |
| level += hr_level; |
| hr_level_avg = (hr_level_avg + hr_level) >> 1; |
| #else |
| level += (read_exp_golomb(xd, r, 0) << 1); |
| #endif // CONFIG_COEFF_HR_ADAPTIVE |
| } |
| } else { |
| #if !CONFIG_IMPROVEIDTX |
| const int row = pos >> bwl; |
| const int col = pos - (row << bwl); |
| #endif // !CONFIG_IMPROVEIDTX |
| int limits = get_lf_limits(row, col, tx_class, plane); |
| if (limits) { |
| if (level >= LF_MAX_BASE_BR_RANGE) { |
| #if CONFIG_COEFF_HR_ADAPTIVE |
| int hr_level = read_adaptive_hr(xd, r, hr_level_avg); |
| level += hr_level; |
| hr_level_avg = (hr_level_avg + hr_level) >> 1; |
| #else |
| level += read_exp_golomb(xd, r, 0); |
| #endif // CONFIG_COEFF_HR_ADAPTIVE |
| } |
| } else { |
| if (level >= MAX_BASE_BR_RANGE) { |
| #if CONFIG_COEFF_HR_ADAPTIVE |
| int hr_level = read_adaptive_hr(xd, r, hr_level_avg); |
| level += hr_level; |
| hr_level_avg = (hr_level_avg + hr_level) >> 1; |
| #else |
| level += read_exp_golomb(xd, r, 0); |
| #endif // CONFIG_COEFF_HR_ADAPTIVE |
| } |
| } |
| } |
| if (c == 0) dc_val = sign ? -level : level; |
| |
| // Bitmasking to clamp level to valid range: |
| // The valid range for 8/10/12 bit vdieo is at most 14/16/18 bit |
| level &= 0xfffff; |
| cul_level += level; |
| tran_low_t dq_coeff; |
| // Bitmasking to clamp dq_coeff to valid range: |
| // The valid range for 8/10/12 bit video is at most 17/19/21 bit |
| const int64_t dq_coeff_hp = |
| (int64_t)level * get_dqv(dequant, scan[c], iqmatrix) & 0xffffff; |
| dq_coeff = |
| (tran_low_t)(ROUND_POWER_OF_TWO_64(dq_coeff_hp, QUANT_TABLE_BITS)); |
| dq_coeff = dq_coeff >> shift; |
| if (sign) { |
| dq_coeff = -dq_coeff; |
| } |
| tcoeffs[pos] = clamp(dq_coeff, min_value, max_value); |
| #if CONFIG_INSPECTION |
| tcoeffs_copy[pos] = tcoeffs[pos]; |
| quant_coeffs[pos] = sign ? -level : level; |
| #endif // CONFIG_INSPECTION |
| } |
| } |
| #if DEBUG_EXTQUANT |
| for (int c = 0; c < tx_size_wide[tx_size] * tx_size_high[tx_size]; c++) { |
| fprintf(cm->fDecCoeffLog, "%d ", tcoeffs[c]); |
| } |
| fprintf(cm->fDecCoeffLog, "\n\n"); |
| #endif |
| |
| cul_level = AOMMIN(COEFF_CONTEXT_MASK, cul_level); |
| |
| // DC value |
| set_dc_sign(&cul_level, dc_val); |
| |
| return cul_level; |
| } |
| |
| void av1_read_coeffs_txb_facade(const AV1_COMMON *const cm, |
| DecoderCodingBlock *dcb, aom_reader *const r, |
| const int plane, const int row, const int col, |
| const TX_SIZE tx_size) { |
| #if TXCOEFF_TIMER |
| struct aom_usec_timer timer; |
| aom_usec_timer_start(&timer); |
| #endif |
| MACROBLOCKD *const xd = &dcb->xd; |
| MB_MODE_INFO *const mbmi = xd->mi[0]; |
| struct macroblockd_plane *const pd = &xd->plane[plane]; |
| const BLOCK_SIZE plane_bsize = get_mb_plane_block_size( |
| xd, mbmi, plane, pd->subsampling_x, pd->subsampling_y); |
| #if !CONFIG_EXT_RECUR_PARTITIONS |
| assert(plane_bsize == get_plane_block_size(mbmi->sb_type[plane > 0], |
| pd->subsampling_x, |
| pd->subsampling_y)); |
| #endif // !CONFIG_EXT_RECUR_PARTITIONS |
| |
| TXB_CTX txb_ctx; |
| get_txb_ctx(plane_bsize, tx_size, plane, pd->above_entropy_context + col, |
| pd->left_entropy_context + row, &txb_ctx, |
| mbmi->fsc_mode[xd->tree_type == CHROMA_PART]); |
| |
| const uint8_t decode_rest = |
| av1_read_sig_txtype(cm, dcb, r, row, col, plane, &txb_ctx, tx_size); |
| const PLANE_TYPE plane_type = get_plane_type(plane); |
| const TX_TYPE tx_type = av1_get_tx_type(xd, plane_type, row, col, tx_size, |
| cm->features.reduced_tx_set_used); |
| const int is_inter = is_inter_block(mbmi, xd->tree_type); |
| uint8_t cul_level = 0; |
| if (decode_rest) { |
| if ((mbmi->fsc_mode[xd->tree_type == CHROMA_PART] && |
| get_primary_tx_type(tx_type) == IDTX && plane == PLANE_TYPE_Y) || |
| use_inter_fsc(cm, plane, tx_type, is_inter)) { |
| cul_level = |
| av1_read_coeffs_txb_skip(cm, dcb, r, row, col, plane, tx_size); |
| } else { |
| cul_level = |
| av1_read_coeffs_txb(cm, dcb, r, row, col, plane, &txb_ctx, tx_size); |
| } |
| } else { |
| av1_update_txk_skip_array(cm, xd->mi_row, xd->mi_col, xd->tree_type, |
| &mbmi->chroma_ref_info, plane, row, col, tx_size); |
| } |
| av1_set_entropy_contexts(xd, pd, plane, plane_bsize, tx_size, cul_level, col, |
| row); |
| if (is_inter_block(mbmi, xd->tree_type) && (plane == 0)) { |
| const TX_TYPE tx_type_inter = av1_get_tx_type( |
| xd, plane_type, row, col, tx_size, cm->features.reduced_tx_set_used); |
| update_txk_array(xd, row, col, tx_size, tx_type_inter); |
| } |
| |
| #if TXCOEFF_TIMER |
| aom_usec_timer_mark(&timer); |
| const int64_t elapsed_time = aom_usec_timer_elapsed(&timer); |
| cm->txcoeff_timer += elapsed_time; |
| ++cm->txb_count; |
| #endif |
| } |
