From 42479d2ed8fcbad5fb3ffb52553dad05a329590f Mon Sep 17 00:00:00 2001 From: gramanas Date: Sun, 30 Jul 2023 20:51:05 +0300 Subject: oop --- src/osc_tri.c | 43 +++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 43 insertions(+) (limited to 'src/osc_tri.c') diff --git a/src/osc_tri.c b/src/osc_tri.c index c4a56f5..8d2ef82 100644 --- a/src/osc_tri.c +++ b/src/osc_tri.c @@ -28,3 +28,46 @@ osc_tri_next(float f, float offset) { return osc_next_offset(&OSC_tri, f, offset); } + + +static float +tri_sample(osc_t * osc, float offset) +{ + return osc_interpolate(offset, + tri((int)offset), + tri(osc_next_index(osc, offset))); +} + +static float +tri_next(osc_t * osc, float f, float offset) +{ + return osc_next_offset(osc, f, offset); +} + +static const struct osc_ops osc_operations = { + .sample = tri_sample, + .next = tri_next, +}; + +osc_t * +make_tri(const char * name) +{ + osc_t * osc = (osc_t *)malloc(sizeof(osc_t)); + + int len = strlen(name); + strncpy(osc->name, name, 16); + osc->data = NULL; + osc->len = 2; + osc->start = 0; + osc->end = 2; + osc->type = WAVE; + osc->ops = &osc_operations; + + return osc; +} + +void +free_tri(osc_t * osc) +{ + free(osc); +} -- cgit v1.2.3