hi
i am still trying to find a way to overcome the
'agc-setting-is-reset-each-time-cam-is-accessed' problem. a friend of
mine tried to help by writing a pd-object, that does send the 'restore'
command to the driver, so that i can at least set the gain manually,
when working with pd, just by restoring the nvram of the cam.
however, it doesn't work yet. i am not a c coder myself and thus have no
idea to fix it.
i get the error:
IDIOCPWCRUSER: Bad file descriptor
this is the code of pd-object:
########################################################################
#include <errno.h>
#include <string.h>
#include <stdio.h>
#include <stdlib.h>
#include <sys/ioctl.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <unistd.h>
#define _LINUX_TIME_H 1 /* to get things compile on kernel 2.6.x */
#include <linux/videodev.h>
#include "m_pd.h"
#include "pwc-ioctl.h"
char *device = "/dev/video1";
static t_class *setpwc_class;
typedef struct _setpwc {
t_object x_obj;
} t_setpwc;
void check_device(int *fd)
{
if (*fd == -1)
{
/* open device */
*fd = open(device, O_RDWR);
if (*fd == -1)
{
post("Error while accessing device");
// exit(1);
}
}
}
void restore_settings(int fd)
{
if (ioctl(fd, VIDIOCPWCRUSER) == -1)
perror("VIDIOCPWCRUSER");
}
void setpwc_bang(t_setpwc *x)
{
int fd = -1;
check_device(&fd);
restore_settings(fd);
}
void *setpwc_new(void)
{
t_setpwc *x = (t_setpwc *)pd_new(setpwc_class);
return (void *)x;
}
void setpwc_setup(void) {
setpwc_class = class_new(gensym("setpwc"),
(t_newmethod)setpwc_new,
0, sizeof(t_setpwc),
CLASS_DEFAULT, 0);
class_addbang(setpwc_class, setpwc_bang);
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