diff options
Diffstat (limited to 'third_party/aom/av1/decoder/decodetxb.c')
| -rw-r--r-- | third_party/aom/av1/decoder/decodetxb.c | 362 |
1 files changed, 0 insertions, 362 deletions
diff --git a/third_party/aom/av1/decoder/decodetxb.c b/third_party/aom/av1/decoder/decodetxb.c deleted file mode 100644 index f3ef2d55e..000000000 --- a/third_party/aom/av1/decoder/decodetxb.c +++ /dev/null @@ -1,362 +0,0 @@ -/* - * Copyright (c) 2017, Alliance for Open Media. All rights reserved - * - * This source code is subject to the terms of the BSD 2 Clause License and - * the Alliance for Open Media Patent License 1.0. If the BSD 2 Clause License - * was not distributed with this source code in the LICENSE file, you can - * obtain it at www.aomedia.org/license/software. 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 www.aomedia.org/license/patent. - */ - -#include "av1/decoder/decodetxb.h" - -#include "aom_ports/mem.h" -#include "av1/common/idct.h" -#include "av1/common/scan.h" -#include "av1/common/txb_common.h" -#include "av1/decoder/decodemv.h" - -#define ACCT_STR __func__ - -static int read_golomb(MACROBLOCKD *xd, aom_reader *r) { - int x = 1; - int length = 0; - int i = 0; - - while (!i) { - i = aom_read_bit(r, ACCT_STR); - ++length; - if (length > 20) { - aom_internal_error(xd->error_info, AOM_CODEC_CORRUPT_FRAME, - "Invalid length in read_golomb"); - break; - } - } - - for (i = 0; i < length - 1; ++i) { - x <<= 1; - x += aom_read_bit(r, ACCT_STR); - } - - return x - 1; -} - -static INLINE int rec_eob_pos(const int eob_token, const int extra) { - int eob = k_eob_group_start[eob_token]; - if (eob > 2) { - eob += extra; - } - return eob; -} - -static INLINE int get_dqv(const int16_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, TX_SIZE tx_size, - 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 = end_si; c >= start_si; --c) { - const int pos = scan[c]; - const int coeff_ctx = get_lower_levels_ctx_2d(levels, pos, bwl, tx_size); - const int nsymbs = 4; - int level = aom_read_symbol(r, base_cdf[coeff_ctx], nsymbs, ACCT_STR); - 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_STR); - level += k; - if (k < BR_CDF_SIZE - 1) break; - } - } - levels[get_padded_idx(pos, bwl)] = level; - } -} - -static INLINE void read_coeffs_reverse(aom_reader *r, TX_SIZE tx_size, - TX_CLASS tx_class, 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 = end_si; c >= start_si; --c) { - const int pos = scan[c]; - const int coeff_ctx = - get_lower_levels_ctx(levels, pos, bwl, tx_size, tx_class); - const int nsymbs = 4; - int level = aom_read_symbol(r, base_cdf[coeff_ctx], nsymbs, ACCT_STR); - 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_STR); - level += k; - if (k < BR_CDF_SIZE - 1) break; - } - } - levels[get_padded_idx(pos, bwl)] = level; - } -} - -uint8_t av1_read_coeffs_txb(const AV1_COMMON *const cm, MACROBLOCKD *const xd, - 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) { - 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 int16_t *const dequant = pd->seg_dequant_QTX[mbmi->segment_id]; - tran_low_t *const tcoeffs = pd->dqcoeff_block + xd->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); - int cul_level = 0; - int dc_val = 0; - uint8_t levels_buf[TX_PAD_2D]; - uint8_t *const levels = set_levels(levels_buf, width); - const int all_zero = aom_read_symbol( - r, ec_ctx->txb_skip_cdf[txs_ctx][txb_ctx->txb_skip_ctx], 2, ACCT_STR); - eob_info *eob_data = pd->eob_data + xd->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 (all_zero) { - *max_scan_line = 0; - if (plane == 0) { - const int txk_type_idx = - av1_get_txk_type_index(mbmi->sb_type, blk_row, blk_col); - mbmi->txk_type[txk_type_idx] = DCT_DCT; - } - return 0; - } - - memset(levels_buf, 0, - sizeof(*levels_buf) * - ((width + TX_PAD_HOR) * (height + TX_PAD_VER) + TX_PAD_END)); - if (plane == AOM_PLANE_Y) { - // only y plane's tx_type is transmitted - av1_read_tx_type(cm, xd, blk_row, blk_col, tx_size, r); - } - const TX_TYPE tx_type = av1_get_tx_type(plane_type, xd, blk_row, blk_col, - tx_size, cm->reduced_tx_set_used); - const TX_CLASS tx_class = tx_type_to_class[tx_type]; - const TX_SIZE qm_tx_size = av1_get_adjusted_tx_size(tx_size); - const qm_val_t *iqmatrix = - IS_2D_TRANSFORM(tx_type) - ? pd->seg_iqmatrix[mbmi->segment_id][qm_tx_size] - : cm->giqmatrix[NUM_QM_LEVELS - 1][0][qm_tx_size]; - const SCAN_ORDER *const scan_order = get_scan(tx_size, tx_type); - const int16_t *const scan = scan_order->scan; - int eob_extra = 0; - int eob_pt = 1; - - const int eob_multi_size = txsize_log2_minus4[tx_size]; - const int eob_multi_ctx = (tx_class == TX_CLASS_2D) ? 0 : 1; - switch (eob_multi_size) { - case 0: - eob_pt = - aom_read_symbol(r, ec_ctx->eob_flag_cdf16[plane_type][eob_multi_ctx], - 5, ACCT_STR) + - 1; - break; - case 1: - eob_pt = - aom_read_symbol(r, ec_ctx->eob_flag_cdf32[plane_type][eob_multi_ctx], - 6, ACCT_STR) + - 1; - break; - case 2: - eob_pt = - aom_read_symbol(r, ec_ctx->eob_flag_cdf64[plane_type][eob_multi_ctx], - 7, ACCT_STR) + - 1; - break; - case 3: - eob_pt = - aom_read_symbol(r, ec_ctx->eob_flag_cdf128[plane_type][eob_multi_ctx], - 8, ACCT_STR) + - 1; - break; - case 4: - eob_pt = - aom_read_symbol(r, ec_ctx->eob_flag_cdf256[plane_type][eob_multi_ctx], - 9, ACCT_STR) + - 1; - break; - case 5: - eob_pt = - aom_read_symbol(r, ec_ctx->eob_flag_cdf512[plane_type][eob_multi_ctx], - 10, ACCT_STR) + - 1; - break; - case 6: - default: - eob_pt = aom_read_symbol( - r, ec_ctx->eob_flag_cdf1024[plane_type][eob_multi_ctx], 11, - ACCT_STR) + - 1; - break; - } - - if (k_eob_offset_bits[eob_pt] > 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_STR); - if (bit) { - eob_extra += (1 << (k_eob_offset_bits[eob_pt] - 1)); - } - - for (int i = 1; i < k_eob_offset_bits[eob_pt]; i++) { - bit = aom_read_bit(r, ACCT_STR); - if (bit) { - eob_extra += (1 << (k_eob_offset_bits[eob_pt] - 1 - i)); - } - } - } - *eob = rec_eob_pos(eob_pt, eob_extra); - - { - // 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); - const int nsymbs = 3; - aom_cdf_prob *cdf = - ec_ctx->coeff_base_eob_cdf[txs_ctx][plane_type][coeff_ctx]; - int level = aom_read_symbol(r, cdf, nsymbs, ACCT_STR) + 1; - if (level > NUM_BASE_LEVELS) { - const int br_ctx = get_br_ctx(levels, pos, bwl, tx_class); - for (int idx = 0; idx < COEFF_BASE_RANGE; idx += BR_CDF_SIZE - 1) { - const int k = aom_read_symbol( - r, - ec_ctx->coeff_br_cdf[AOMMIN(txs_ctx, TX_32X32)][plane_type][br_ctx], - BR_CDF_SIZE, ACCT_STR); - level += k; - if (k < BR_CDF_SIZE - 1) break; - } - } - levels[get_padded_idx(pos, bwl)] = level; - } - if (*eob > 1) { - base_cdf_arr base_cdf = ec_ctx->coeff_base_cdf[txs_ctx][plane_type]; - br_cdf_arr br_cdf = - ec_ctx->coeff_br_cdf[AOMMIN(txs_ctx, TX_32X32)][plane_type]; - if (tx_class == TX_CLASS_2D) { - read_coeffs_reverse_2d(r, tx_size, 1, *eob - 1 - 1, scan, bwl, levels, - base_cdf, br_cdf); - read_coeffs_reverse(r, tx_size, tx_class, 0, 0, scan, bwl, levels, - base_cdf, br_cdf); - } else { - read_coeffs_reverse(r, tx_size, tx_class, 0, *eob - 1 - 1, scan, bwl, - levels, base_cdf, br_cdf); - } - } - - int16_t num_zero_coeffs = 0; - for (int c = 0; c < *eob; ++c) { - const int pos = scan[c]; - num_zero_coeffs = AOMMAX(num_zero_coeffs, pos); - } - memset(tcoeffs, 0, (num_zero_coeffs + 1) * sizeof(tcoeffs[0])); - - for (int c = 0; c < *eob; ++c) { - const int pos = scan[c]; - uint8_t sign; - tran_low_t level = levels[get_padded_idx(pos, bwl)]; - if (level) { - *max_scan_line = AOMMAX(*max_scan_line, pos); - if (c == 0) { - const int dc_sign_ctx = txb_ctx->dc_sign_ctx; - sign = aom_read_symbol(r, ec_ctx->dc_sign_cdf[plane_type][dc_sign_ctx], - 2, ACCT_STR); - } else { - sign = aom_read_bit(r, ACCT_STR); - } - if (level >= MAX_BASE_BR_RANGE) { - level += read_golomb(xd, r); - } - - 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 - dq_coeff = (tran_low_t)( - (int64_t)level * get_dqv(dequant, scan[c], iqmatrix) & 0xffffff); - dq_coeff = dq_coeff >> shift; - if (sign) { - dq_coeff = -dq_coeff; - } - tcoeffs[pos] = clamp(dq_coeff, min_value, max_value); - } - } - - 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, - MACROBLOCKD *const xd, 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 - MB_MODE_INFO *const mbmi = xd->mi[0]; - struct macroblockd_plane *const pd = &xd->plane[plane]; - - const BLOCK_SIZE bsize = mbmi->sb_type; - const BLOCK_SIZE plane_bsize = - get_plane_block_size(bsize, pd->subsampling_x, pd->subsampling_y); - - TXB_CTX txb_ctx; - get_txb_ctx(plane_bsize, tx_size, plane, pd->above_context + col, - pd->left_context + row, &txb_ctx); - const uint8_t cul_level = - av1_read_coeffs_txb(cm, xd, r, row, col, plane, &txb_ctx, tx_size); - av1_set_contexts(xd, pd, plane, plane_bsize, tx_size, cul_level, col, row); - - if (is_inter_block(mbmi)) { - PLANE_TYPE plane_type = get_plane_type(plane); - // tx_type will be read out in av1_read_coeffs_txb_facade - const TX_TYPE tx_type = av1_get_tx_type(plane_type, xd, row, col, tx_size, - cm->reduced_tx_set_used); - - if (plane == 0) - update_txk_array(mbmi->txk_type, mbmi->sb_type, row, col, tx_size, - tx_type); - } - -#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 -} |