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| 1 | /* |
| 2 | * meas.h - Measurements |
| 3 | * |
| 4 | * Written 2009, 2010 by Werner Almesberger |
| 5 | * Copyright 2009, 2010 by Werner Almesberger |
| 6 | * |
| 7 | * This program is free software; you can redistribute it and/or modify |
| 8 | * it under the terms of the GNU General Public License as published by |
| 9 | * the Free Software Foundation; either version 2 of the License, or |
| 10 | * (at your option) any later version. |
| 11 | */ |
| 12 | |
| 13 | |
| 14 | #ifndef MEAS_H |
| 15 | #define MEAS_H |
| 16 | |
| 17 | |
| 18 | #include "coord.h" |
| 19 | #include "expr.h" |
| 20 | #include "bitset.h" |
| 21 | |
| 22 | |
| 23 | typedef int (*lt_op_type)(struct coord a, struct coord b); |
| 24 | |
| 25 | struct vec; |
| 26 | struct obj; |
| 27 | |
| 28 | struct frame_qual { |
| 29 | const struct frame *frame; |
| 30 | struct frame_qual *next; |
| 31 | }; |
| 32 | |
| 33 | struct meas { |
| 34 | enum meas_type { |
| 35 | mt_xy_next, |
| 36 | mt_x_next, |
| 37 | mt_y_next, |
| 38 | mt_xy_max, |
| 39 | mt_x_max, |
| 40 | mt_y_max, |
| 41 | mt_n |
| 42 | } type; |
| 43 | char *label; /* or NULL */ |
| 44 | int inverted; |
| 45 | /* low is obj->base */ |
| 46 | struct vec *high; |
| 47 | struct expr *offset; |
| 48 | |
| 49 | /* frame qualifiers */ |
| 50 | struct frame_qual *low_qual; |
| 51 | struct frame_qual *high_qual; |
| 52 | }; |
| 53 | |
| 54 | struct sample { |
| 55 | struct coord pos; |
| 56 | struct bitset *frame_set; |
| 57 | struct sample *next; |
| 58 | }; |
| 59 | |
| 60 | |
| 61 | extern int n_samples; |
| 62 | |
| 63 | |
| 64 | int lt_x(struct coord a, struct coord b); |
| 65 | int lt_y(struct coord a, struct coord b); |
| 66 | int lt_xy(struct coord a, struct coord b); |
| 67 | |
| 68 | const struct sample *meas_find_min(lt_op_type lt, const struct sample *s, |
| 69 | const struct bitset *qual); |
| 70 | const struct sample *meas_find_next(lt_op_type lt, const struct sample *s, |
| 71 | struct coord ref, const struct bitset *qual); |
| 72 | const struct sample *meas_find_max(lt_op_type lt, const struct sample *s, |
| 73 | const struct bitset *qual); |
| 74 | |
| 75 | |
| 76 | void reset_samples(struct sample **samples, int n); |
| 77 | void meas_start(void); |
| 78 | void meas_post(const struct vec *vec, struct coord pos, |
| 79 | const struct bitset *frame_set); |
| 80 | int instantiate_meas(int n_frames); |
| 81 | |
| 82 | #endif /* !MEAS_H */ |
| 83 |
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