mirror of
https://github.com/godotengine/godot.git
synced 2024-12-27 11:24:59 +08:00
58 lines
1.7 KiB
C++
58 lines
1.7 KiB
C++
/*
|
|
* 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 VP9_COMMON_VP9_SCAN_H_
|
|
#define VP9_COMMON_VP9_SCAN_H_
|
|
|
|
#include "vpx/vpx_integer.h"
|
|
#include "vpx_ports/mem.h"
|
|
|
|
#include "vp9/common/vp9_enums.h"
|
|
#include "vp9/common/vp9_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 vp9_default_scan_orders[TX_SIZES];
|
|
extern const scan_order vp9_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(const MACROBLOCKD *xd, TX_SIZE tx_size,
|
|
PLANE_TYPE type, int block_idx) {
|
|
const MODE_INFO *const mi = xd->mi[0];
|
|
|
|
if (is_inter_block(mi) || type != PLANE_TYPE_Y || xd->lossless) {
|
|
return &vp9_default_scan_orders[tx_size];
|
|
} else {
|
|
const PREDICTION_MODE mode = get_y_mode(mi, block_idx);
|
|
return &vp9_scan_orders[tx_size][intra_mode_to_tx_type_lookup[mode]];
|
|
}
|
|
}
|
|
|
|
#ifdef __cplusplus
|
|
} // extern "C"
|
|
#endif
|
|
|
|
#endif // VP9_COMMON_VP9_SCAN_H_
|