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plugin.c
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plugin.c
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#include <stdio.h>
#include <string.h>
#include <unistd.h>
#include <pthread.h>
#include <stdlib.h>
#include <soundpipe.h>
#include <sporth.h>
#include "huion.h"
typedef struct {
void (*func)(int type, int ctl, int val, void *);
int run;
pthread_t thread;
void *ud;
sp_ftbl *data;
} huion_d;
static void *listen(void *ud)
{
huion_d *hd = ud;
float *data = hd->data->tbl;
FILE *fp = fopen("/dev/input/by-id/usb-HUION_PenTablet-event-mouse", "rb");
unsigned char msg[24];
if(fp == NULL) {
printf("There was a problem reading the F310 controller. Exiting gracefully...\n");
return NULL;
}
while(hd->run) {
huion_read(fp, msg, data);
usleep(100);
}
fprintf(stderr, "Stopping Huion tablet...\n");
fclose(fp);
pthread_exit(NULL);
}
int huion_start(huion_d *hd)
{
fprintf(stderr, "Starting Huion tablet...\n");
hd->run = 1;
pthread_create(&hd->thread, NULL, listen, hd);
return 0;
}
int huion_stop(huion_d *hd)
{
hd->run = 0;
sleep(1);
return 0;
}
static int sporth_huion(plumber_data *pd, sporth_stack *stack, void **ud)
{
huion_d *hd;
char *str;
switch(pd->mode) {
case PLUMBER_CREATE:
fprintf(stderr, "Creating our custom gain plugin!\n");
if(sporth_check_args(stack, "s") != SPORTH_OK) {
fprintf(stderr,"Incorrect arguments for huion\n");
stack->error++;
return PLUMBER_NOTOK;
}
/* malloc and assign address to user data */
str = sporth_stack_pop_string(stack);
hd = malloc(sizeof(huion_d));
*ud = hd;
sp_ftbl_create(pd->sp, &hd->data, P_MAX);
plumber_ftmap_add(pd, str, hd->data);
huion_start(hd);
break;
case PLUMBER_INIT:
str = sporth_stack_pop_string(stack);
break;
case PLUMBER_COMPUTE:
break;
case PLUMBER_DESTROY:
hd = *ud;
huion_stop(hd);
free(hd);
break;
default:
fprintf(stderr, "Huion: unknown mode %d\n", pd->mode);
break;
}
return PLUMBER_OK;
}
plumber_dyn_func sporth_return_ugen()
{
return sporth_huion;
}