73 lines
2.2 KiB
C
73 lines
2.2 KiB
C
/*
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* Copyright (c) 2016, Alliance for Open Media. All rights reserved
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*
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* This source code is subject to the terms of the BSD 2 Clause License and
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* the Alliance for Open Media Patent License 1.0. If the BSD 2 Clause License
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* was not distributed with this source code in the LICENSE file, you can
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* obtain it at www.aomedia.org/license/software. If the Alliance for Open
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* Media Patent License 1.0 was not distributed with this source code in the
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* PATENTS file, you can obtain it at www.aomedia.org/license/patent.
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*/
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#ifndef AV1_COMMON_SCAN_H_
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#define AV1_COMMON_SCAN_H_
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#include "aom/aom_integer.h"
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#include "aom_ports/mem.h"
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#include "av1/common/enums.h"
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#include "av1/common/blockd.h"
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#ifdef __cplusplus
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extern "C" {
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#endif
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#define MAX_NEIGHBORS 2
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typedef struct {
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const int16_t *scan;
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const int16_t *iscan;
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const int16_t *neighbors;
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} scan_order;
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extern const scan_order av1_default_scan_orders[TX_SIZES];
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extern const scan_order av1_intra_scan_orders[TX_SIZES][TX_TYPES];
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static INLINE int get_coef_context(const int16_t *neighbors,
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const uint8_t *token_cache, int c) {
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return (1 + token_cache[neighbors[MAX_NEIGHBORS * c + 0]] +
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token_cache[neighbors[MAX_NEIGHBORS * c + 1]]) >>
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1;
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}
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static INLINE const scan_order *get_intra_scan(TX_SIZE tx_size,
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TX_TYPE tx_type) {
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return &av1_intra_scan_orders[tx_size][tx_type];
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}
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#if CONFIG_EXT_TX
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extern const scan_order av1_inter_scan_orders[TX_SIZES_ALL][TX_TYPES];
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static INLINE const scan_order *get_inter_scan(TX_SIZE tx_size,
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TX_TYPE tx_type) {
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return &av1_inter_scan_orders[tx_size][tx_type];
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}
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#endif // CONFIG_EXT_TX
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static INLINE const scan_order *get_scan(TX_SIZE tx_size, TX_TYPE tx_type,
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int is_inter) {
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#if CONFIG_EXT_TX
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return is_inter ? &av1_inter_scan_orders[tx_size][tx_type]
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: &av1_intra_scan_orders[tx_size][tx_type];
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#else
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(void)is_inter;
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return &av1_intra_scan_orders[tx_size][tx_type];
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#endif // CONFIG_EXT_TX
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}
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#ifdef __cplusplus
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} // extern "C"
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#endif
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#endif // AV1_COMMON_SCAN_H_
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