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1 | /***************************************************************************** |
2 | * Copyright (C) 2014 x265 project | |
3 | * | |
4 | * Authors: Steve Borho <steve@borho.org> | |
5 | * | |
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. | |
10 | * | |
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. | |
15 | * | |
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. | |
19 | * | |
20 | * This program is also available under a commercial proprietary license. | |
21 | * For more information, contact us at license @ x265.com. | |
22 | *****************************************************************************/ | |
23 | ||
24 | #ifndef X265_CONSTANTS_H | |
25 | #define X265_CONSTANTS_H | |
26 | ||
27 | #include "common.h" | |
28 | ||
29 | namespace x265 { | |
30 | // private namespace | |
31 | ||
72b9787e JB |
32 | void initZscanToRaster(uint32_t maxFullDepth, uint32_t depth, uint32_t startVal, uint32_t*& curIdx); |
33 | void initRasterToZscan(uint32_t maxFullDepth); | |
34 | ||
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]; | |
38 | ||
39 | enum { ChromaQPMappingTableSize = 70 }; | |
40 | enum { AngleMapping422TableSize = 36 }; | |
41 | ||
42 | extern const uint8_t g_chromaScale[ChromaQPMappingTableSize]; | |
43 | extern const uint8_t g_chroma422IntraAngleMappingTable[AngleMapping422TableSize]; | |
44 | ||
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]; | |
48 | ||
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) | |
53 | ||
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; | |
59 | ||
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]; | |
64 | ||
65 | // Subpel interpolation defines and constants | |
66 | ||
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 | |
73 | ||
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 | |
76 | ||
77 | // Scanning order & context mapping table | |
78 | ||
79 | #define NUM_SCAN_SIZE 4 | |
80 | ||
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]; | |
85 | ||
86 | extern const uint8_t g_minInGroup[10]; | |
87 | extern const uint8_t g_goRiceRange[5]; // maximum value coded with Rice codes | |
88 | ||
89 | // CABAC tables | |
90 | extern const uint8_t g_lpsTable[64][4]; | |
91 | extern const uint8_t x265_exp2_lut[64]; | |
92 | ||
93 | // Intra tables | |
94 | extern const uint8_t g_intraFilterFlags[NUM_INTRA_MODE]; | |
95 | ||
96 | extern const uint32_t g_depthInc[3][4]; | |
97 | extern const uint32_t g_depthScanIdx[8][8]; | |
98 | ||
99 | } | |
100 | ||
101 | #endif |