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1 | /***************************************************************************** |
2 | * Copyright (C) 2013 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_BITCOST_H | |
25 | #define X265_BITCOST_H | |
26 | ||
27 | #include "common.h" | |
28 | #include "threading.h" | |
29 | #include "mv.h" | |
30 | ||
31 | namespace x265 { | |
32 | // private x265 namespace | |
33 | ||
34 | class BitCost | |
35 | { | |
36 | public: | |
37 | ||
b53f7c52 | 38 | BitCost() : m_cost_mvx(0), m_cost_mvy(0), m_cost(0), m_mvp(0) {} |
72b9787e JB |
39 | |
40 | void setQP(unsigned int qp); | |
41 | ||
42 | void setMVP(const MV& mvp) { m_mvp = mvp; m_cost_mvx = m_cost - mvp.x; m_cost_mvy = m_cost - mvp.y; } | |
43 | ||
44 | // return bit cost of motion vector difference, multiplied by lambda | |
45 | inline uint16_t mvcost(const MV& mv) const { return m_cost_mvx[mv.x] + m_cost_mvy[mv.y]; } | |
46 | ||
47 | // return bit cost of motion vector difference, without lambda | |
48 | inline uint32_t bitcost(const MV& mv) const | |
49 | { | |
50 | return (uint32_t)(s_bitsizes[abs(mv.x - m_mvp.x)] + | |
51 | s_bitsizes[abs(mv.y - m_mvp.y)] + 0.5f); | |
52 | } | |
53 | ||
54 | static inline uint32_t bitcost(const MV& mv, const MV& mvp) | |
55 | { | |
56 | return (uint32_t)(s_bitsizes[abs(mv.x - mvp.x)] + | |
57 | s_bitsizes[abs(mv.y - mvp.y)] + 0.5f); | |
58 | } | |
59 | ||
60 | static void destroy(); | |
61 | ||
62 | protected: | |
63 | ||
64 | uint16_t *m_cost_mvx; | |
65 | ||
66 | uint16_t *m_cost_mvy; | |
67 | ||
68 | uint16_t *m_cost; | |
69 | ||
70 | MV m_mvp; | |
71 | ||
72 | BitCost& operator =(const BitCost&); | |
73 | ||
74 | private: | |
75 | ||
76 | /* default log2_max_mv_length_horizontal and log2_max_mv_length_horizontal | |
77 | * are 15, specified in quarter-pel luma sample units. making the maximum | |
78 | * signaled ful-pel motion distance 4096, max qpel is 32768 */ | |
79 | enum { BC_MAX_MV = (1 << 15) }; | |
80 | ||
81 | enum { BC_MAX_QP = 82 }; | |
82 | ||
83 | static float *s_bitsizes; | |
84 | ||
85 | static uint16_t *s_costs[BC_MAX_QP]; | |
86 | ||
87 | static Lock s_costCalcLock; | |
88 | ||
89 | static void CalculateLogs(); | |
90 | }; | |
91 | } | |
92 | ||
93 | #endif // ifndef X265_BITCOST_H |