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/*
* Copyright © 2018-2023, VideoLAN and dav1d authors
* Copyright © 2018-2023, Two Orioles, LLC
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice, this
* list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
* ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef DAV1D_SRC_INTRA_EDGE_H
#define DAV1D_SRC_INTRA_EDGE_H
#include <stdint.h>
enum EdgeFlags {
EDGE_I444_TOP_HAS_RIGHT = 1 << 0,
EDGE_I422_TOP_HAS_RIGHT = 1 << 1,
EDGE_I420_TOP_HAS_RIGHT = 1 << 2,
EDGE_I444_LEFT_HAS_BOTTOM = 1 << 3,
EDGE_I422_LEFT_HAS_BOTTOM = 1 << 4,
EDGE_I420_LEFT_HAS_BOTTOM = 1 << 5,
EDGE_ALL_TOP_HAS_RIGHT = EDGE_I444_TOP_HAS_RIGHT |
EDGE_I422_TOP_HAS_RIGHT |
EDGE_I420_TOP_HAS_RIGHT,
EDGE_ALL_LEFT_HAS_BOTTOM = EDGE_I444_LEFT_HAS_BOTTOM |
EDGE_I422_LEFT_HAS_BOTTOM |
EDGE_I420_LEFT_HAS_BOTTOM,
EDGE_ALL_TR_AND_BL = EDGE_ALL_TOP_HAS_RIGHT |
EDGE_ALL_LEFT_HAS_BOTTOM,
};
#define INTRA_EDGE_SPLIT(n, i) \
((const EdgeNode*)((uintptr_t)(n) + ((const EdgeBranch*)(n))->split_offset[i]))
typedef struct EdgeNode {
uint8_t /* enum EdgeFlags */ o, h[2], v[2];
} EdgeNode;
typedef struct EdgeTip {
EdgeNode node;
uint8_t /* enum EdgeFlags */ split[3];
} EdgeTip;
typedef struct EdgeBranch {
EdgeNode node;
uint8_t /* enum EdgeFlags */ h4, v4;
uint16_t split_offset[4]; /* relative to the address of this node */
} EdgeBranch;
/* Tree to keep track of which edges are available. */
EXTERN const EdgeNode *dav1d_intra_edge_tree[2 /* BL_128X128, BL_64X64 */];
void dav1d_init_intra_edge_tree(void);
#endif /* DAV1D_SRC_INTRA_EDGE_H */
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