/src/aom/aom_dsp/recenter.h
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1 | | /* |
2 | | * Copyright (c) 2018, Alliance for Open Media. All rights reserved. |
3 | | * |
4 | | * This source code is subject to the terms of the BSD 2 Clause License and |
5 | | * the Alliance for Open Media Patent License 1.0. If the BSD 2 Clause License |
6 | | * was not distributed with this source code in the LICENSE file, you can |
7 | | * obtain it at www.aomedia.org/license/software. If the Alliance for Open |
8 | | * Media Patent License 1.0 was not distributed with this source code in the |
9 | | * PATENTS file, you can obtain it at www.aomedia.org/license/patent. |
10 | | */ |
11 | | |
12 | | #ifndef AOM_AOM_DSP_RECENTER_H_ |
13 | | #define AOM_AOM_DSP_RECENTER_H_ |
14 | | |
15 | | #include "config/aom_config.h" |
16 | | |
17 | | #include "aom/aom_integer.h" |
18 | | |
19 | | // Inverse recenters a non-negative literal v around a reference r |
20 | 517k | static inline uint16_t inv_recenter_nonneg(uint16_t r, uint16_t v) { |
21 | 517k | if (v > (r << 1)) |
22 | 95.4k | return v; |
23 | 422k | else if ((v & 1) == 0) |
24 | 227k | return (v >> 1) + r; |
25 | 194k | else |
26 | 194k | return r - ((v + 1) >> 1); |
27 | 517k | } bitreader_buffer.c:inv_recenter_nonneg Line | Count | Source | 20 | 143k | static inline uint16_t inv_recenter_nonneg(uint16_t r, uint16_t v) { | 21 | 143k | if (v > (r << 1)) | 22 | 34.0k | return v; | 23 | 109k | else if ((v & 1) == 0) | 24 | 67.9k | return (v >> 1) + r; | 25 | 41.3k | else | 26 | 41.3k | return r - ((v + 1) >> 1); | 27 | 143k | } |
binary_codes_reader.c:inv_recenter_nonneg Line | Count | Source | 20 | 374k | static inline uint16_t inv_recenter_nonneg(uint16_t r, uint16_t v) { | 21 | 374k | if (v > (r << 1)) | 22 | 61.3k | return v; | 23 | 312k | else if ((v & 1) == 0) | 24 | 159k | return (v >> 1) + r; | 25 | 153k | else | 26 | 153k | return r - ((v + 1) >> 1); | 27 | 374k | } |
|
28 | | |
29 | | // Inverse recenters a non-negative literal v in [0, n-1] around a |
30 | | // reference r also in [0, n-1] |
31 | | static inline uint16_t inv_recenter_finite_nonneg(uint16_t n, uint16_t r, |
32 | 517k | uint16_t v) { |
33 | 517k | if ((r << 1) <= n) { |
34 | 343k | return inv_recenter_nonneg(r, v); |
35 | 343k | } else { |
36 | 173k | return n - 1 - inv_recenter_nonneg(n - 1 - r, v); |
37 | 173k | } |
38 | 517k | } bitreader_buffer.c:inv_recenter_finite_nonneg Line | Count | Source | 32 | 143k | uint16_t v) { | 33 | 143k | if ((r << 1) <= n) { | 34 | 113k | return inv_recenter_nonneg(r, v); | 35 | 113k | } else { | 36 | 29.7k | return n - 1 - inv_recenter_nonneg(n - 1 - r, v); | 37 | 29.7k | } | 38 | 143k | } |
binary_codes_reader.c:inv_recenter_finite_nonneg Line | Count | Source | 32 | 374k | uint16_t v) { | 33 | 374k | if ((r << 1) <= n) { | 34 | 230k | return inv_recenter_nonneg(r, v); | 35 | 230k | } else { | 36 | 144k | return n - 1 - inv_recenter_nonneg(n - 1 - r, v); | 37 | 144k | } | 38 | 374k | } |
|
39 | | |
40 | | // Recenters a non-negative literal v around a reference r |
41 | 0 | static inline uint16_t recenter_nonneg(uint16_t r, uint16_t v) { |
42 | 0 | if (v > (r << 1)) |
43 | 0 | return v; |
44 | 0 | else if (v >= r) |
45 | 0 | return ((v - r) << 1); |
46 | 0 | else |
47 | 0 | return ((r - v) << 1) - 1; |
48 | 0 | } Unexecuted instantiation: bitreader_buffer.c:recenter_nonneg Unexecuted instantiation: binary_codes_reader.c:recenter_nonneg |
49 | | |
50 | | // Recenters a non-negative literal v in [0, n-1] around a |
51 | | // reference r also in [0, n-1] |
52 | | static inline uint16_t recenter_finite_nonneg(uint16_t n, uint16_t r, |
53 | 0 | uint16_t v) { |
54 | 0 | if ((r << 1) <= n) { |
55 | 0 | return recenter_nonneg(r, v); |
56 | 0 | } else { |
57 | 0 | return recenter_nonneg(n - 1 - r, n - 1 - v); |
58 | 0 | } |
59 | 0 | } Unexecuted instantiation: bitreader_buffer.c:recenter_finite_nonneg Unexecuted instantiation: binary_codes_reader.c:recenter_finite_nonneg |
60 | | |
61 | | #endif // AOM_AOM_DSP_RECENTER_H_ |