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4349 | Serge | 1 | /* |
2 | * Copyright (C) 2004-2010 Michael Niedermayer |
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3 | * |
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4 | * This file is part of FFmpeg. |
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5 | * |
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6 | * FFmpeg is free software; you can redistribute it and/or |
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7 | * modify it under the terms of the GNU Lesser General Public |
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8 | * License as published by the Free Software Foundation; either |
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9 | * version 2.1 of the License, or (at your option) any later version. |
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10 | * |
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11 | * FFmpeg is distributed in the hope that it will be useful, |
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12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
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13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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14 | * Lesser General Public License for more details. |
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15 | * |
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16 | * You should have received a copy of the GNU Lesser General Public |
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17 | * License along with FFmpeg; if not, write to the Free Software |
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18 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
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19 | */ |
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20 | |||
21 | #ifndef AVCODEC_DIRAC_DWT_H |
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22 | #define AVCODEC_DIRAC_DWT_H |
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23 | |||
24 | #include |
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25 | |||
26 | typedef int DWTELEM; |
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27 | typedef short IDWTELEM; |
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28 | |||
29 | #define MAX_DWT_SUPPORT 8 |
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30 | #define MAX_DECOMPOSITIONS 8 |
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31 | |||
32 | typedef struct DWTCompose { |
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33 | IDWTELEM *b[MAX_DWT_SUPPORT]; |
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34 | int y; |
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35 | } DWTCompose; |
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36 | |||
37 | struct DWTContext; |
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38 | |||
39 | // Possible prototypes for vertical_compose functions |
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40 | typedef void (*vertical_compose_2tap)(IDWTELEM *b0, IDWTELEM *b1, int width); |
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41 | typedef void (*vertical_compose_3tap)(IDWTELEM *b0, IDWTELEM *b1, IDWTELEM *b2, int width); |
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42 | typedef void (*vertical_compose_5tap)(IDWTELEM *b0, IDWTELEM *b1, IDWTELEM *b2, IDWTELEM *b3, IDWTELEM *b4, int width); |
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43 | typedef void (*vertical_compose_9tap)(IDWTELEM *dst, IDWTELEM *b[8], int width); |
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44 | |||
45 | typedef struct DWTContext { |
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46 | IDWTELEM *buffer; |
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47 | IDWTELEM *temp; |
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48 | int width; |
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49 | int height; |
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50 | int stride; |
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51 | int decomposition_count; |
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52 | int support; |
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53 | |||
54 | void (*spatial_compose)(struct DWTContext *cs, int level, int width, int height, int stride); |
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55 | void (*vertical_compose_l0)(void); |
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56 | void (*vertical_compose_h0)(void); |
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57 | void (*vertical_compose_l1)(void); |
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58 | void (*vertical_compose_h1)(void); |
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59 | void (*vertical_compose)(void); ///< one set of lowpass and highpass combined |
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60 | void (*horizontal_compose)(IDWTELEM *b, IDWTELEM *tmp, int width); |
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61 | |||
62 | DWTCompose cs[MAX_DECOMPOSITIONS]; |
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63 | } DWTContext; |
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64 | |||
65 | enum dwt_type { |
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66 | DWT_SNOW_DAUB9_7, |
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67 | DWT_SNOW_LEGALL5_3, |
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68 | DWT_DIRAC_DD9_7, |
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69 | DWT_DIRAC_LEGALL5_3, |
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70 | DWT_DIRAC_DD13_7, |
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71 | DWT_DIRAC_HAAR0, |
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72 | DWT_DIRAC_HAAR1, |
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73 | DWT_DIRAC_FIDELITY, |
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74 | DWT_DIRAC_DAUB9_7, |
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75 | DWT_NUM_TYPES |
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76 | }; |
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77 | |||
78 | // -1 if an error occurred, e.g. the dwt_type isn't recognized |
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79 | int ff_spatial_idwt_init2(DWTContext *d, IDWTELEM *buffer, int width, int height, |
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80 | int stride, enum dwt_type type, int decomposition_count, |
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81 | IDWTELEM *temp); |
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82 | |||
83 | void ff_spatial_idwt_slice2(DWTContext *d, int y); |
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84 | |||
85 | // shared stuff for simd optimiztions |
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86 | #define COMPOSE_53iL0(b0, b1, b2)\ |
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87 | (b1 - ((b0 + b2 + 2) >> 2)) |
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88 | |||
89 | #define COMPOSE_DIRAC53iH0(b0, b1, b2)\ |
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90 | (b1 + ((b0 + b2 + 1) >> 1)) |
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91 | |||
92 | #define COMPOSE_DD97iH0(b0, b1, b2, b3, b4)\ |
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93 | (b2 + ((-b0 + 9*b1 + 9*b3 - b4 + 8) >> 4)) |
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94 | |||
95 | #define COMPOSE_DD137iL0(b0, b1, b2, b3, b4)\ |
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96 | (b2 - ((-b0 + 9*b1 + 9*b3 - b4 + 16) >> 5)) |
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97 | |||
98 | #define COMPOSE_HAARiL0(b0, b1)\ |
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99 | (b0 - ((b1 + 1) >> 1)) |
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100 | |||
101 | #define COMPOSE_HAARiH0(b0, b1)\ |
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102 | (b0 + b1) |
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103 | |||
104 | #define COMPOSE_FIDELITYiL0(b0, b1, b2, b3, b4, b5, b6, b7, b8)\ |
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105 | (b4 - ((-8*(b0+b8) + 21*(b1+b7) - 46*(b2+b6) + 161*(b3+b5) + 128) >> 8)) |
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106 | |||
107 | #define COMPOSE_FIDELITYiH0(b0, b1, b2, b3, b4, b5, b6, b7, b8)\ |
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108 | (b4 + ((-2*(b0+b8) + 10*(b1+b7) - 25*(b2+b6) + 81*(b3+b5) + 128) >> 8)) |
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109 | |||
110 | #define COMPOSE_DAUB97iL1(b0, b1, b2)\ |
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111 | (b1 - ((1817*(b0 + b2) + 2048) >> 12)) |
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112 | |||
113 | #define COMPOSE_DAUB97iH1(b0, b1, b2)\ |
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114 | (b1 - (( 113*(b0 + b2) + 64) >> 7)) |
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115 | |||
116 | #define COMPOSE_DAUB97iL0(b0, b1, b2)\ |
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117 | (b1 + (( 217*(b0 + b2) + 2048) >> 12)) |
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118 | |||
119 | #define COMPOSE_DAUB97iH0(b0, b1, b2)\ |
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120 | (b1 + ((6497*(b0 + b2) + 2048) >> 12)) |
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121 | |||
122 | |||
123 | #endif /* AVCODEC_DWT_H */> |