/******************************************************************************
Description.: This function ializes the plugin. It parses the commandline-
parameter and stores the default and parsed values in the
appropriate variables.
Input Value.: param contains among others the command-line string
Return Value: 0 if everything is fine
1 if "--help" was triggered, in this case the calling programm
should stop running and leave.
******************************************************************************/
int input_init(input_parameter *param, int id)
{
char *dev = "/dev/video0", *s;
int width = 640, height = 480, fps = 5, format = V4L2_PIX_FMT_MJPEG, i;
/* initialize the mutes variable */
if(pthread_mutex_init(&cams[id].controls_mutex, NULL) != 0) {
IPRINT("could not initialize mutex variable\n");
exit(EXIT_FAILURE);
}
param->argv[0] = INPUT_PLUGIN_NAME;
/* show all parameters for DBG purposes */
for(i = 0; i < param->argc; i++) {
DBG("argv[%d]=%s\n", i, param->argv[i]);
}
/* parse the parameters */
reset_getopt();
while(1) {
int option_index = 0, c = 0;
static struct option long_options[] = {
{"h", no_argument, 0, 0
},
{"help", no_argument, 0, 0},
{"d", required_argument, 0, 0},
{"device", required_argument, 0, 0},
{"r", required_argument, 0, 0},
{"resolution", required_argument, 0, 0},
{"f", required_argument, 0, 0},
{"fps", required_argument, 0, 0},
{"y", no_argument, 0, 0},
{"yuv", no_argument, 0, 0},
{"q", required_argument, 0, 0},
{"quality", required_argument, 0, 0},
{"m", required_argument, 0, 0},
{"minimum_size", required_argument, 0, 0},
{"n", no_argument, 0, 0},
{"no_dynctrl", no_argument, 0, 0},
{"l", required_argument, 0, 0},
{"led", required_argument, 0, 0},
{"s", no_argument, 0, 0},
{"stop", no_argument, 0, 0},
{0, 0, 0, 0}
};
/* parsing all parameters according to the list above is sufficent */
c = getopt_long_only(param->argc, param->argv, "", long_options, &option_index);
/* no more options to parse */
if(c == -1) break;
/* unrecognized option */
if(c == '?') {
help();
return 1;
}
/* dispatch the given options */
switch(option_index) {
/* h, help */
case 0:
case 1:
DBG("case 0,1\n");
help();
return 1;
break;
/* d, device */
case 2:
case 3:
DBG("case 2,3\n");
dev = strdup(optarg);
break;
/* r, resolution */
case 4:
case 5:
DBG("case 4,5\n");
width = -1;
height = -1;
/* try to find the resolution in lookup table "resolutions" */
for(i = 0; i < LENGTH_OF(resolutions); i++) {
if(strcmp(resolutions[i].string, optarg) == 0) {
width = resolutions[i].width;
height = resolutions[i].height;
}
}
/* done if width and height were set */
if(width != -1 && height != -1)
break;
/* parse value as decimal value */
width = strtol(optarg, &s, 10);
height = strtol(s + 1, NULL, 10);
break;
/* f, fps */
case 6:
case 7:
DBG("case 6,7\n");
fps = atoi(optarg);
break;
/* y, yuv */
case 8:
case 9:
DBG("case 8,9\n");
format = V4L2_PIX_FMT_YUYV;
break;
/* q, quality */
case 10:
case 11:
DBG("case 10,11\n");
format = V4L2_PIX_FMT_YUYV;
gquality = MIN(MAX(atoi(optarg), 0), 100);
break;
/* m, minimum_size */
case 12:
case 13:
DBG("case 12,13\n");
minimum_size = MAX(atoi(optarg), 0);
break;
/* n, no_dynctrl */
case 14:
case 15:
DBG("case 14,15\n");
dynctrls = 0;
break;
/* l, led */
case 16:
case 17:/*
DBG("case 16,17\n");
if ( strcmp("on", optarg) == 0 ) {
led = IN_CMD_LED_ON;
} else if ( strcmp("off", optarg) == 0 ) {
led = IN_CMD_LED_OFF;
} else if ( strcmp("auto", optarg) == 0 ) {
led = IN_CMD_LED_AUTO;
} else if ( strcmp("blink", optarg) == 0 ) {
led = IN_CMD_LED_BLINK;
}*/
break;
/* s, stop */
case 18:
case 19:
DBG("case 18,19\n");
stop_camera = 1;
break;
default:
DBG("default case\n");
help();
return 1;
}
}
DBG("input id: %d\n", id);
cams[id].id = id;
cams[id].pglobal = param->global;
/* allocate webcam datastructure */
cams[id].videoIn = malloc(sizeof(struct vdIn));
if(cams[id].videoIn == NULL) {
IPRINT("not enough memory for videoIn\n");
exit(EXIT_FAILURE);
}
memset(cams[id].videoIn, 0, sizeof(struct vdIn));
/* display the parsed values */
IPRINT("Using V4L2 device.: %s\n", dev);
IPRINT("Desired Resolution: %i x %i\n", width, height);
IPRINT("Frames Per Second.: %i\n", fps);
IPRINT("Format............: %s\n", (format == V4L2_PIX_FMT_YUYV) ? "YUV" : "MJPEG");
if(format == V4L2_PIX_FMT_YUYV)
IPRINT("JPEG Quality......: %d\n", gquality);
IPRINT("Stop camera feat..: %d\n", stop_camera);
DBG("vdIn pn: %d\n", id);
/* open video device and prepare data structure */
if(init_videoIn(cams[id].videoIn, dev, width, height, fps, format, 1, cams[id].pglobal, id) < 0) {
IPRINT("init_VideoIn failed\n");
closelog();
exit(EXIT_FAILURE);
}
/*
* recent linux-uvc driver (revision > ~#125) requires to use dynctrls
* for pan/tilt/focus/...
* dynctrls must get initialized
*/
if(dynctrls)
initDynCtrls(cams[id].videoIn->fd);
enumerateControls(cams[id].videoIn, cams[id].pglobal, id); // enumerate V4L2 controls after UVC extended mapping
return 0;
}
/******************************************************************************
Description.: This function initializes the plugin. It parses the commandline-
parameter and stores the default and parsed values in the
appropriate variables.
Input Value.: param contains among others the command-line string
Return Value: 0 if everything is fine
1 if "--help" was triggered, in this case the calling programm
should stop running and leave.
******************************************************************************/
int input_init(input_parameter *param) {
char *argv[MAX_ARGUMENTS]={NULL}, *dev = "/dev/video0", *s;
int argc=1, width=640, height=480, fps=5, format=V4L2_PIX_FMT_MJPEG, i;
in_cmd_type led = IN_CMD_LED_AUTO;
/* initialize the mutes variable */
if( pthread_mutex_init(&controls_mutex, NULL) != 0 ) {
IPRINT("could not initialize mutex variable\n");
exit(EXIT_FAILURE);
}
/* convert the single parameter-string to an array of strings */
argv[0] = INPUT_PLUGIN_NAME;
if ( param->parameter_string != NULL && strlen(param->parameter_string) != 0 ) {
char *arg=NULL, *saveptr=NULL, *token=NULL;
arg=(char *)strdup(param->parameter_string);
if ( strchr(arg, ' ') != NULL ) {
token=strtok_r(arg, " ", &saveptr);
if ( token != NULL ) {
argv[argc] = strdup(token);
argc++;
while ( (token=strtok_r(NULL, " ", &saveptr)) != NULL ) {
argv[argc] = strdup(token);
argc++;
if (argc >= MAX_ARGUMENTS) {
IPRINT("ERROR: too many arguments to input plugin\n");
return 1;
}
}
}
}
}
/* show all parameters for DBG purposes */
for (i=0; i<argc; i++) {
DBG("argv[%d]=%s\n", i, argv[i]);
}
/* parse the parameters */
reset_getopt();
while(1) {
int option_index = 0, c=0;
static struct option long_options[] = \
{
{"h", no_argument, 0, 0},
{"help", no_argument, 0, 0},
{"d", required_argument, 0, 0},
{"device", required_argument, 0, 0},
{"r", required_argument, 0, 0},
{"resolution", required_argument, 0, 0},
{"f", required_argument, 0, 0},
{"fps", required_argument, 0, 0},
{"y", no_argument, 0, 0},
{"yuv", no_argument, 0, 0},
{"q", required_argument, 0, 0},
{"quality", required_argument, 0, 0},
{"m", required_argument, 0, 0},
{"minimum_size", required_argument, 0, 0},
{"n", no_argument, 0, 0},
{"no_dynctrl", no_argument, 0, 0},
{"l", required_argument, 0, 0},
{"led", required_argument, 0, 0},
{0, 0, 0, 0}
};
/* parsing all parameters according to the list above is sufficent */
c = getopt_long_only(argc, argv, "", long_options, &option_index);
/* no more options to parse */
if (c == -1) break;
/* unrecognized option */
if (c == '?'){
help();
return 1;
}
/* dispatch the given options */
switch (option_index) {
/* h, help */
case 0:
case 1:
DBG("case 0,1\n");
help();
return 1;
break;
/* d, device */
case 2:
case 3:
DBG("case 2,3\n");
dev = strdup(optarg);
break;
/* r, resolution */
case 4:
case 5:
DBG("case 4,5\n");
width = -1;
height = -1;
/* try to find the resolution in lookup table "resolutions" */
for ( i=0; i < LENGTH_OF(resolutions); i++ ) {
if ( strcmp(resolutions[i].string, optarg) == 0 ) {
width = resolutions[i].width;
height = resolutions[i].height;
}
}
/* done if width and height were set */
if(width != -1 && height != -1)
break;
/* parse value as decimal value */
width = strtol(optarg, &s, 10);
height = strtol(s+1, NULL, 10);
break;
/* f, fps */
case 6:
case 7:
DBG("case 6,7\n");
fps=atoi(optarg);
break;
/* y, yuv */
case 8:
case 9:
DBG("case 8,9\n");
format = V4L2_PIX_FMT_YUYV;
break;
/* q, quality */
case 10:
case 11:
DBG("case 10,11\n");
format = V4L2_PIX_FMT_YUYV;
gquality = MIN(MAX(atoi(optarg), 0), 100);
break;
/* m, minimum_size */
case 12:
case 13:
DBG("case 12,13\n");
minimum_size = MAX(atoi(optarg), 0);
break;
/* n, no_dynctrl */
case 14:
case 15:
DBG("case 14,15\n");
dynctrls = 0;
break;
/* l, led */
case 16:
case 17:
DBG("case 16,17\n");
if ( strcmp("on", optarg) == 0 ) {
led = IN_CMD_LED_ON;
} else if ( strcmp("off", optarg) == 0 ) {
led = IN_CMD_LED_OFF;
} else if ( strcmp("auto", optarg) == 0 ) {
led = IN_CMD_LED_AUTO;
} else if ( strcmp("blink", optarg) == 0 ) {
led = IN_CMD_LED_BLINK;
}
break;
default:
DBG("default case\n");
help();
return 1;
}
}
/* keep a pointer to the global variables */
pglobal = param->global;
/* allocate webcam datastructure */
videoIn = malloc(sizeof(struct vdIn));
if ( videoIn == NULL ) {
IPRINT("not enough memory for videoIn\n");
exit(EXIT_FAILURE);
}
memset(videoIn, 0, sizeof(struct vdIn));
/* display the parsed values */
IPRINT("Using V4L2 device.: %s\n", dev);
IPRINT("Desired Resolution: %i x %i\n", width, height);
IPRINT("Frames Per Second.: %i\n", fps);
IPRINT("Format............: %s\n", (format==V4L2_PIX_FMT_YUYV)?"YUV":"MJPEG");
if ( format == V4L2_PIX_FMT_YUYV )
IPRINT("JPEG Quality......: %d\n", gquality);
/* open video device and prepare data structure */
if (init_videoIn(videoIn, dev, width, height, fps, format, 1) < 0) {
IPRINT("init_VideoIn failed\n");
closelog();
exit(EXIT_FAILURE);
}
/*
* recent linux-uvc driver (revision > ~#125) requires to use dynctrls
* for pan/tilt/focus/...
* dynctrls must get initialized
*/
if (dynctrls)
initDynCtrls(videoIn->fd);
/*
* switch the LED according to the command line parameters (if any)
*/
input_cmd(led, 0);
return 0;
}
