ref: 6f3172295052d485dd633ac1218d64b9c2b01f3a
dir: /vp10/common/scan.h/
/* * Copyright (c) 2013 The WebM project authors. All Rights Reserved. * * Use of this source code is governed by a BSD-style license * that can be found in the LICENSE file in the root of the source * tree. An additional intellectual property rights grant can be found * in the file PATENTS. All contributing project authors may * be found in the AUTHORS file in the root of the source tree. */ #ifndef VP10_COMMON_SCAN_H_ #define VP10_COMMON_SCAN_H_ #include "vpx/vpx_integer.h" #include "vpx_ports/mem.h" #include "vp10/common/enums.h" #include "vp10/common/blockd.h" #ifdef __cplusplus extern "C" { #endif #define MAX_NEIGHBORS 2 typedef struct { const int16_t *scan; const int16_t *iscan; const int16_t *neighbors; } scan_order; extern const scan_order vp10_default_scan_orders[TX_SIZES]; extern const scan_order vp10_scan_orders[TX_SIZES][TX_TYPES]; static INLINE int get_coef_context(const int16_t *neighbors, const uint8_t *token_cache, int c) { return (1 + token_cache[neighbors[MAX_NEIGHBORS * c + 0]] + token_cache[neighbors[MAX_NEIGHBORS * c + 1]]) >> 1; } static INLINE const scan_order *get_scan(TX_SIZE tx_size, TX_TYPE tx_type) { return &vp10_scan_orders[tx_size][tx_type]; } #ifdef __cplusplus } // extern "C" #endif #endif // VP10_COMMON_SCAN_H_