Mercurial > hg > forks > libbpg
comparison x265/source/encoder/bitcost.h @ 0:772086c29cc7
Initial import.
author | Matti Hamalainen <ccr@tnsp.org> |
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date | Wed, 16 Nov 2016 11:16:33 +0200 |
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-1:000000000000 | 0:772086c29cc7 |
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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_NS { | |
32 // private x265 namespace | |
33 | |
34 class BitCost | |
35 { | |
36 public: | |
37 | |
38 BitCost() : m_cost_mvx(0), m_cost_mvy(0), m_cost(0), m_mvp(0) {} | |
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 |