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| Rev | Author | Line No. | Line |
|---|---|---|---|
| 964 | jag | 1 | /* |
| 2 | * play.cc |
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| 2097 | jag | 3 | * DIN Is Noise is copyright (c) 2006-2024 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 "audio.h" |
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| 9 | #include "play.h" |
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| 10 | #include "multi_curve.h" |
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| 11 | #include <string.h> |
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| 12 | |||
| 13 | void play::init () { |
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| 14 | sol = 0; |
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| 15 | x = 0.0f; |
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| 16 | dx = 0.0f; |
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| 17 | vol = 0.0f; |
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| 18 | pdx = pvol = 0; |
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| 19 | alloc (); |
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| 20 | pdx [0] = 0.0f; pdx [n_1] = 1.0f; |
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| 21 | pvol [0] = 0.0f; pvol [n_1] = 1.0f; |
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| 22 | } |
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| 23 | |||
| 24 | void play::alloc () { |
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| 25 | n = aout.samples_per_channel; |
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| 26 | n_1 = n - 1; |
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| 27 | da = 1.0f / n_1; |
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| 28 | if (pdx) delete [] pdx; |
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| 29 | if (pvol) delete [] pvol; |
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| 30 | pdx = new float [n]; |
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| 31 | pvol = new float [n]; |
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| 32 | int sz = n * sizeof (float); |
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| 33 | memset (pdx, 0, sz); |
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| 34 | memset (pvol, 0, sz); |
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| 35 | } |
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| 36 | |||
| 37 | void play::realloc () { |
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| 38 | alloc (); |
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| 39 | fill_pitch (dx); |
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| 40 | fill_volume (vol); |
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| 41 | } |
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| 42 | |||
| 43 | play::play (solver *w) { |
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| 44 | init (); |
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| 45 | set_wave (w); |
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| 46 | } |
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| 47 | |||
| 48 | play::play () { |
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| 49 | init (); |
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| 50 | } |
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| 51 | |||
| 52 | play::play (const play& p) { |
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| 53 | sol = p.sol; |
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| 54 | x = p.x; |
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| 55 | dx = p.dx; |
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| 56 | vol = p.vol; |
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| 57 | n = p.n; |
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| 58 | n_1 = p.n_1; |
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| 59 | da = p.da; |
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| 60 | pdx = new float [n]; |
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| 61 | pvol = new float [n]; |
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| 62 | for (int i = 0; i < n; ++i) { |
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| 63 | pdx [i] = p.pdx [i]; |
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| 64 | pvol [i] = p.pvol [i]; |
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| 65 | } |
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| 66 | } |
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| 67 | |||
| 68 | play::~play () { |
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| 69 | if (pdx) delete[] pdx; |
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| 70 | if (pvol) delete[] pvol; |
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| 71 | } |
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| 72 | |||
| 73 | void play::fill_pitch (float xd) { |
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| 74 | for (int i = 0; i < n; ++i) pdx[i] = xd; |
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| 75 | dx = xd; |
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| 76 | } |
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| 77 | |||
| 78 | void play::fill_volume (float v) { |
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| 79 | for (int i = 0; i < n; ++i) pvol[i] = v; |
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| 80 | vol = v; |
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| 81 | } |
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| 82 | |||
| 83 | void play::interpolate_buffer (float* buf, float s, float e) { |
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| 84 | float a = 0; |
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| 85 | float es = e - s; |
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| 86 | for (int i = 0; i < n; ++i) { |
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| 87 | buf[i] = s + a * es; |
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| 88 | a += da; |
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| 89 | } |
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| 90 | } |
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| 91 | |||
| 92 | void play::set_interpolated_volume (float v) { |
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| 93 | interpolate_buffer (pvol, vol, v); |
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| 94 | vol = v; |
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| 95 | } |
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| 96 | |||
| 97 | void play::set_interpolated_pitch (float xd) { |
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| 98 | interpolate_buffer (pdx, dx, xd); |
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| 99 | dx = xd; |
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| 100 | } |
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| 101 | |||
| 102 | void play::set_interpolated_pitch (float xd, int check) { |
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| 103 | if ((pdx[0] == pdx[n_1]) && (pdx[0] == xd)) return; // pitch is same |
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| 104 | else |
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| 105 | if (xd == dx) |
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| 106 | for (int i = 0; i < n; ++i) pdx[i] = dx; // same as last pitch so just fill ie no interpolation needed |
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| 107 | else |
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| 108 | set_interpolated_pitch (xd); |
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| 109 | } |
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| 110 | |||
| 111 | void play::set_interpolated_volume (float v, int check) { |
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| 112 | if ((pvol[0]==pvol[n_1]) && (pvol[0]==v)) return; // volume is same |
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| 113 | else |
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| 114 | if (v == vol) |
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| 115 | for (int i = 0; i < n; ++i) pvol[i] = v; // same as last volume so just fill ie no interpolation needed |
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| 116 | else |
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| 117 | set_interpolated_volume (v); |
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| 118 | } |
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| 119 | |||
| 120 | void play::gen_wav_and_mix (float* wav, int n) { |
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| 121 | (*sol) (x, pdx, n, wav); |
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| 122 | if (mixer.active) { |
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| 123 | mixer.gen_mix (aout.mix, n); |
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| 124 | mixer.do_mix (wav, aout.mix, aout.mixa, n); |
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| 125 | } |
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| 126 | } |
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| 127 | |||
| 128 | void play::master (float* L, float* R, float* wav, int n, float* vola) { // master with volume array |
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| 129 | gen_wav_and_mix (wav, n); // mix waveforms |
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| 130 | operator() (L, n, wav, vola); // multiply volumes |
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| 131 | memcpy (R, L, aout.samples_channel_size); // copy to R |
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| 132 | } |
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| 133 | |||
| 134 | void play::master (float* L, float* R, float* wav, int n, float vol) { // master with volume |
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| 135 | gen_wav_and_mix (wav, n); // mix waveforms |
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| 136 | operator() (L, n, wav, vol); // apply volume |
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| 137 | memcpy (R, L, aout.samples_channel_size); // copy to R |
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| 138 | } |
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| 139 | |||
| 2266 | jag | 140 | |
| 141 | void play::master (float* L, float* wav, int n, float vol) { // master with volume |
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| 142 | gen_wav_and_mix (wav, n); // mix waveforms |
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| 143 | operator() (L, n, wav, vol); // apply volume |
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| 144 | } |
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| 145 | |||
| 2267 | jag | 146 | |
| 147 | void play::master (float* L, float* wav, int n, float* vola) { // master with volume array |
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| 148 | gen_wav_and_mix (wav, n); // mix waveforms |
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| 149 | operator() (L, n, wav, vola); // apply volume |
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| 150 | } |
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| 151 | |||
| 964 | jag | 152 | void play::gen_wav_fm (solver& _sol, float& _x, float* wav, float* fm, int n) { // generate waveform samples with FM |
| 153 | _sol (_x, pdx, n, fm, wav); |
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| 154 | } |
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| 155 | |||
| 156 | void play::gen_wav_am (float* out, float* wav, float* am, int n) { // apply AM to waveform samples |
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| 157 | for (int i = 0; i < n; ++i) out[i] = ((pvol[i] + am[i]) * wav[i]); |
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| 158 | } |
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| 159 | |||
| 160 | void play::gen_wav_fm_am_mix (float* out, int n) { // generate waveform samples, apply AM and FM and mix (if present) |
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| 161 | gen_wav_fm (*sol, x, aout.result, aout.fms, n); |
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| 162 | gen_wav_am (out, aout.result, aout.ams, n); |
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| 163 | if (mixer.active) { |
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| 164 | mixer.gen_fm (aout.result, n, aout.fms); |
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| 165 | gen_wav_am (aout.mix, aout.result, aout.ams, n); |
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| 166 | mixer.do_mix (out, aout.mix, aout.mixa, n); |
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| 167 | } |
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| 168 | } |
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| 169 | |||
| 170 | void play::gen_wav_mix (float* out, float* vola, int n) { |
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| 171 | gen_wav_and_mix (aout.result, n); |
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| 172 | operator() (out, n, aout.result, vola); |
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| 173 | } |
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| 174 | |||
| 175 | void play::gen_wav_mix (float* out, float vol, int n) { |
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| 176 | gen_wav_and_mix (aout.result, n); |
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| 177 | operator() (out, n, aout.result, vol); |
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| 178 | } |
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| 179 | |||
| 1799 | jag | 180 | void play::set_mix (multi_curve& crv, const std::string& nam) { |
| 964 | jag | 181 | mixer.setup (crv, x, dx); |
| 1799 | jag | 182 | mixer.name = nam; |
| 964 | jag | 183 | } |