ref: 92275f3b95309a13c8e1aa136bb62e7f6ea71458
dir: /piper/ay.c/
#include <u.h> #include <libc.h> #include "piper.h" typedef struct AY AY; struct AY { struct { int freq; int enable; int noise; int env; }abc[3]; struct { int period; int alter; int attack; int cont; int hold; int hit; }env; int noisefreq; int volume; char path[1]; }; static int cmd(void *aux, Cmd *c) { return 0; } static void * alloc(char *path) { AY *ay; int i; if ((ay = calloc(1, sizeof(*ay) + strlen(path) + 1)) != nil) { for (i = 0; i < 3; i++) { ay->abc[i].freq = pathopen(path, "%c/Tone/Frequency/ctl", 'A'+i); ay->abc[i].enable = pathopen(path, "%c/Tone/Enable/ctl", 'A'+i); ay->abc[i].enable = pathopen(path, "%c/Noise/ctl", 'A'+i); ay->abc[i].enable = pathopen(path, "%c/Envelope/ctl", 'A'+i); } ay->env.period = pathopen(path, "Envelope/Period/ctl"); ay->env.alter = pathopen(path, "Envelope/Alternate/ctl"); ay->env.attack = pathopen(path, "Envelope/Attack/ctl"); ay->env.cont = pathopen(path, "Envelope/Continue/ctl"); ay->env.hold = pathopen(path, "Envelope/Hold/ctl"); ay->env.hit = pathopen(path, "Envelope/Hit/ctl"); ay->noisefreq = pathopen(path, "Noise/ctl"); ay->volume = pathopen(path, "Volume/ctl"); strcpy(ay->path, path); } return ay; } Synth ay_3_8910 = { .name = "AY-3-8910", .cmd = cmd, .alloc = alloc, };