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| Rev | Author | Line No. | Line |
|---|---|---|---|
| 964 | jag | 1 | /* |
| 2 | * curve_mixer.cc |
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| 2009 | jag | 3 | * DIN Is Noise is copyright (c) 2006-2023 Jagannathan Sampath |
| 1713 | jag | 4 | * DIN Is Noise is released under GNU Public License 2.0 |
| 1479 | jag | 5 | * For more information, please visit https://dinisnoise.org/ |
| 964 | jag | 6 | */ |
| 7 | |||
| 8 | #include "curve_mixer.h" |
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| 9 | #include "multi_curve.h" |
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| 10 | #include "console.h" |
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| 11 | #include "chrono.h" |
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| 12 | #include <algorithm> |
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| 13 | |||
| 14 | #include <string> |
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| 15 | |||
| 16 | extern int SAMPLE_RATE; |
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| 1799 | jag | 17 | extern char BUFFER []; |
| 964 | jag | 18 | |
| 19 | curve_mixer::curve_mixer () { |
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| 20 | a = da = 0; |
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| 21 | x = dx = 0; |
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| 22 | active = 0; |
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| 23 | } |
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| 24 | |||
| 25 | curve_mixer::~curve_mixer () { |
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| 1869 | jag | 26 | if (active) cons << GREEN << "Finished mixing (@ " << name << ")" << eol; |
| 964 | jag | 27 | } |
| 28 | |||
| 29 | void curve_mixer::setup (multi_curve& crv, float ix, float idx) { |
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| 30 | a = 0.0f; |
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| 31 | da = 1./ (TIME * SAMPLE_RATE); |
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| 32 | x = ix; |
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| 33 | dx = idx; |
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| 34 | mix = crv; |
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| 35 | sol (&mix); |
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| 36 | active = 1; |
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| 37 | ELAPSEDT = 0; |
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| 38 | } |
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| 39 | |||
| 40 | void curve_mixer::gen_mix (float* out, int n) { |
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| 41 | sol (x, dx, n, out); |
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| 42 | } |
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| 43 | |||
| 44 | void curve_mixer::gen_mix (float* out, int n, xhandler& xmin, xhandler& xmax) { |
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| 45 | sol (x, dx, n, out, xmin, xmax); |
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| 46 | } |
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| 47 | |||
| 48 | void curve_mixer::gen_fm (float* out, int n, float* fm) { |
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| 49 | sol (x, dx, n, fm, out); |
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| 50 | } |
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| 51 | |||
| 52 | void curve_mixer::fill_alpha (float* ab, int n) { |
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| 53 | for (int i = 0; i < n; ++i) { |
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| 1799 | jag | 54 | ab[i] = a; |
| 964 | jag | 55 | a += da; |
| 56 | } |
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| 57 | } |
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| 58 | |||
| 59 | void curve_mixer::gen_alpha (float* ab, int n) { |
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| 60 | float fa = a + n * da; |
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| 61 | if (fa < 1.0) { |
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| 62 | fill_alpha (ab, n); |
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| 63 | } else { |
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| 64 | int n1 = (1 - a) / da; |
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| 65 | fill_alpha (ab, n1); |
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| 66 | int n2 = n - n1; |
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| 67 | for (int i = n1, j = n1 + n2; i < j; ++i) ab[i] = 1.0f; |
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| 68 | a = 1.0f; |
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| 69 | active = 0; |
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| 1869 | jag | 70 | sprintf (BUFFER, "Curve mixing complete (@ %s)", name.c_str()); |
| 1799 | jag | 71 | cons << GREEN << BUFFER << eol; |
| 964 | jag | 72 | } |
| 73 | } |
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| 74 | |||
| 75 | void curve_mixer::do_mix (float* out, float* mixb, float* mixa, int n) { |
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| 76 | |||
| 77 | gen_alpha (mixa, n); |
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| 78 | |||
| 79 | for (int i = 0; i < n; ++i) { |
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| 80 | float mv = mixb[i]; |
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| 81 | out[i] = mv + mixa[i] * (out[i] - mv); |
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| 82 | } |
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| 83 | |||
| 1799 | jag | 84 | if (active && ui_clk() >= ELAPSEDT) { |
| 1869 | jag | 85 | sprintf (BUFFER, "Curve mixing %d%% complete (@ %s)", int(a * 100), name.c_str()); |
| 1799 | jag | 86 | cons << YELLOW << BUFFER << eol; |
| 964 | jag | 87 | ELAPSEDT = ui_clk () + std::min<double> (1.0, 0.05 * TIME); |
| 88 | } |
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| 89 | |||
| 90 | } |