diff options
Diffstat (limited to 'lib/gator_oscillator.c')
| -rw-r--r-- | lib/gator_oscillator.c | 64 |
1 files changed, 64 insertions, 0 deletions
diff --git a/lib/gator_oscillator.c b/lib/gator_oscillator.c new file mode 100644 index 0000000..02bbc59 --- /dev/null +++ b/lib/gator_oscillator.c @@ -0,0 +1,64 @@ +// Gator Oscillator +// +// gator_oscillator +// +// Gator Oscillator from Alligator lines +// +// Histogram of Alligator Teeth-Lips and Jaw-Teeth +// +// Inputs: 1 +// Outputs: 2 +// Constants: 0 + + +#include <math.h> +#include "ts.h" + + +ts_parameter_t const ts_gator_oscillator_p = { .n_inputs = 1, .n_outputs = 2, .n_constants = 0, .params_size = 0 }; + +uint_t ts_gator_oscillator_offset( ts_constant_t const *c ) +{ + ( void )c; + return ( 12 ); +} + +int ts_gator_oscillator( + fp_t * const *y, uint_t y_n, + fp_t const * const *x, uint_t x_n, + uint_t n, ts_constant_t const *c +) +{ + TS_PROLOGUE( ts_gator_oscillator_p ); + (void)c; + /* Gator Oscillator uses Alligator lines: + * Lips = SMA(5), Teeth = SMA(8), Jaw = SMA(13) + * Upper = |Lips - Teeth|, Lower = |Jaw - Teeth| + * Offset 12 because Jaw (SMA13) starts at index 12 + */ + for (uint_t j = 0; j < n && j < 12; ++j) { y[0][j] = 0; y[1][j] = 0; } + for (uint_t i = 12; i < n; ++i) + { + /* SMA(5) - Lips */ + fp_t lips = 0; + for (uint_t j = i - 4; j <= i; ++j) lips += x[0][j]; + lips /= 5; + + /* SMA(8) - Teeth */ + fp_t teeth = 0; + for (uint_t j = i - 7; j <= i; ++j) teeth += x[0][j]; + teeth /= 8; + + /* SMA(13) - Jaw */ + fp_t jaw = 0; + for (uint_t j = i - 12; j <= i; ++j) jaw += x[0][j]; + jaw /= 13; + + y[0][i] = fabs(lips - teeth); + y[1][i] = fabs(jaw - teeth); + } + return 0; +} + + + |