1 /*****************************************************************************
2 * Copyright (C) 2014 x265 project
4 * Authors: Steve Borho <steve@borho.org>
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 2 of the License, or
9 * (at your option) any later version.
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
16 * You should have received a copy of the GNU General Public License
17 * along with this program; if not, write to the Free Software
18 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02111, USA.
20 * This program is also available under a commercial proprietary license.
21 * For more information, contact us at license @ x265.com.
22 *****************************************************************************/
24 #ifndef X265_CONSTANTS_H
25 #define X265_CONSTANTS_H
32 void initZscanToRaster(uint32_t maxFullDepth
, uint32_t depth
, uint32_t startVal
, uint32_t*& curIdx
);
33 void initRasterToZscan(uint32_t maxFullDepth
);
35 extern double x265_lambda_tab
[QP_MAX_MAX
+ 1];
36 extern double x265_lambda2_tab
[QP_MAX_MAX
+ 1];
37 extern const uint16_t x265_chroma_lambda2_offset_tab
[MAX_CHROMA_LAMBDA_OFFSET
+ 1];
39 enum { ChromaQPMappingTableSize
= 70 };
40 enum { AngleMapping422TableSize
= 36 };
42 extern const uint8_t g_chromaScale
[ChromaQPMappingTableSize
];
43 extern const uint8_t g_chroma422IntraAngleMappingTable
[AngleMapping422TableSize
];
45 // flexible conversion from relative to absolute index
46 extern uint32_t g_zscanToRaster
[MAX_NUM_PARTITIONS
];
47 extern uint32_t g_rasterToZscan
[MAX_NUM_PARTITIONS
];
49 // conversion of partition index to picture pel position
50 extern const uint8_t g_zscanToPelX
[MAX_NUM_PARTITIONS
];
51 extern const uint8_t g_zscanToPelY
[MAX_NUM_PARTITIONS
];
52 extern const uint8_t g_log2Size
[MAX_CU_SIZE
+ 1]; // from size to log2(size)
54 // global variable (CTU width/height, max. CU depth)
55 extern uint32_t g_maxLog2CUSize
;
56 extern uint32_t g_maxCUSize
;
57 extern uint32_t g_maxCUDepth
;
58 extern uint32_t g_maxFullDepth
;
60 extern const int16_t g_t4
[4][4];
61 extern const int16_t g_t8
[8][8];
62 extern const int16_t g_t16
[16][16];
63 extern const int16_t g_t32
[32][32];
65 // Subpel interpolation defines and constants
67 #define NTAPS_LUMA 8 // Number of taps for luma
68 #define NTAPS_CHROMA 4 // Number of taps for chroma
69 #define IF_INTERNAL_PREC 14 // Number of bits for internal precision
70 #define IF_FILTER_PREC 6 // Log2 of sum of filter taps
71 #define IF_INTERNAL_OFFS (1 << (IF_INTERNAL_PREC - 1)) // Offset used internally
72 #define SLFASE_CONSTANT 0x5f4e4a53
74 extern const int16_t g_lumaFilter
[4][NTAPS_LUMA
]; // Luma filter taps
75 extern const int16_t g_chromaFilter
[8][NTAPS_CHROMA
]; // Chroma filter taps
77 // Scanning order & context mapping table
79 #define NUM_SCAN_SIZE 4
81 extern const uint16_t* const g_scanOrder
[NUM_SCAN_TYPE
][NUM_SCAN_SIZE
];
82 extern const uint16_t* const g_scanOrderCG
[NUM_SCAN_TYPE
][NUM_SCAN_SIZE
];
83 extern const uint16_t g_scan8x8diag
[8 * 8];
84 extern const uint16_t g_scan4x4
[NUM_SCAN_TYPE
][4 * 4];
86 extern const uint8_t g_minInGroup
[10];
87 extern const uint8_t g_goRiceRange
[5]; // maximum value coded with Rice codes
90 extern const uint8_t g_lpsTable
[64][4];
91 extern const uint8_t x265_exp2_lut
[64];
94 extern const uint8_t g_intraFilterFlags
[NUM_INTRA_MODE
];
96 extern const uint32_t g_depthInc
[3][4];
97 extern const uint32_t g_depthScanIdx
[8][8];