/** @fn static void vehicle_file_io(struct vehicle_priv *priv)
*****************************************************************************
* @b Description: function to get data from GPS
*****************************************************************************
* @param priv : pointer on the private data of the plugin
*****************************************************************************
* @remarks Not used on WIN32 operating system
*****************************************************************************
**/
static void
vehicle_file_io(struct vehicle_priv *priv)
{
dbg(1, "vehicle_file_io : enter\n");
#ifndef _WIN32
int size, rc = 0;
char *str, *tok;
size = read(priv->fd, priv->buffer + priv->buffer_pos, buffer_size - priv->buffer_pos - 1);
if (size <= 0) {
switch (priv->on_eof) {
case 0:
vehicle_file_close(priv);
vehicle_file_open(priv);
break;
case 1:
vehicle_file_disable_watch(priv);
break;
case 2:
exit(0);
break;
}
return;
}
priv->buffer_pos += size;
priv->buffer[priv->buffer_pos] = '\0';
dbg(1, "size=%d pos=%d buffer='%s'\n", size,
priv->buffer_pos, priv->buffer);
str = priv->buffer;
while ((tok = strchr(str, '\n'))) {
*tok++ = '\0';
dbg(1, "line='%s'\n", str);
rc +=vehicle_file_parse(priv, str);
str = tok;
}
if (str != priv->buffer) {
size = priv->buffer + priv->buffer_pos - str;
memmove(priv->buffer, str, size + 1);
priv->buffer_pos = size;
dbg(1, "now pos=%d buffer='%s'\n",
priv->buffer_pos, priv->buffer);
} else if (priv->buffer_pos == buffer_size - 1) {
dbg(0,
"Overflow. Most likely wrong baud rate or no nmea protocol\n");
priv->buffer_pos = 0;
}
if (rc)
callback_list_call_attr_0(priv->cbl, attr_position_coord_geo);
#endif
}
/** @fn static struct vehicle_priv * vehicle_file_new_file(
* struct vehicle_methods *meth,
* struct callback_list *cbl,
* struct attr **attrs)
*****************************************************************************
* @b Description: Function called to initialize the plugin
*****************************************************************************
* @param meth : ?
* @param cbl : ?
* @param attrs : ?
*****************************************************************************
* @return pointer on the private data of the plugin
*****************************************************************************
* @remarks private data is allocated by this function (g_new0)
*****************************************************************************
**/
static struct vehicle_priv *
vehicle_file_new_file(struct vehicle_methods
*meth, struct callback_list
*cbl, struct attr **attrs)
{
struct vehicle_priv *ret;
struct attr *source;
struct attr *time;
struct attr *on_eof;
struct attr *baudrate;
struct attr *checksum_ignore;
dbg(1, "enter\n");
source = attr_search(attrs, NULL, attr_source);
if(source == NULL){
dbg(0,"Missing source attribute");
return NULL;
}
ret = g_new0(struct vehicle_priv, 1); // allocate and initialize to 0
ret->fd = -1;
ret->cbl = cbl;
ret->source = g_strdup(source->u.str);
ret->buffer = g_malloc(buffer_size);
ret->time=1000;
ret->baudrate=B4800;
time = attr_search(attrs, NULL, attr_time);
if (time)
ret->time=time->u.num;
baudrate = attr_search(attrs, NULL, attr_baudrate);
if (baudrate) {
switch (baudrate->u.num) {
case 4800:
ret->baudrate=B4800;
break;
case 9600:
ret->baudrate=B9600;
break;
case 19200:
ret->baudrate=B19200;
break;
#ifdef B38400
case 38400:
ret->baudrate=B38400;
break;
#endif
#ifdef B57600
case 57600:
ret->baudrate=B57600;
break;
#endif
#ifdef B115200
case 115200:
ret->baudrate=B115200;
break;
#endif
}
}
checksum_ignore = attr_search(attrs, NULL, attr_checksum_ignore);
if (checksum_ignore)
ret->checksum_ignore=checksum_ignore->u.num;
ret->attrs = attrs;
on_eof = attr_search(attrs, NULL, attr_on_eof);
if (on_eof && !strcasecmp(on_eof->u.str, "stop"))
ret->on_eof=1;
if (on_eof && !strcasecmp(on_eof->u.str, "exit"))
ret->on_eof=2;
dbg(0,"on_eof=%d\n", ret->on_eof);
*meth = vehicle_file_methods;
ret->cb=callback_new_1(callback_cast(vehicle_file_io), ret);
ret->cbt=callback_new_1(callback_cast(vehicle_file_enable_watch_timer), ret);
ret->sat_item.type=type_position_sat;
ret->sat_item.id_hi=ret->sat_item.id_lo=0;
ret->sat_item.priv_data=ret;
ret->sat_item.meth=&vehicle_file_sat_methods;
#ifdef _WIN32
ret->no_data_count = 0;
#endif
dbg(1, "vehicle_file_new_file:open\n");
if (!vehicle_file_open(ret)) {
dbg(0, "Failed to open '%s'\n", ret->source);
}
vehicle_file_enable_watch(ret);
// vehicle_file_destroy(ret);
// return NULL;
dbg(1, "leave\n");
return ret;
}
static int vehicle_win32_serial_track(struct vehicle_priv *priv)
{
static char buffer[2048] = {0,};
static int current_index = 0;
const int chunk_size = 1024;
int rc = 0;
dbg(1, "enter, *priv='%x', priv->source='%s'\n", priv, priv->source);
if ( priv->no_data_count > 5 )
{
vehicle_file_close( priv );
priv->no_data_count = 0;
vehicle_file_open( priv );
vehicle_file_enable_watch(priv);
}
//if ( priv->fd <= 0 )
//{
// vehicle_file_open( priv );
//}
if ( current_index >= ( sizeof( buffer ) - chunk_size ) )
{
// discard
current_index = 0;
memset( buffer, 0 , sizeof( buffer ) );
}
int dwBytes = serial_io_read( priv->fd, &buffer[ current_index ], chunk_size );
if ( dwBytes > 0 )
{
current_index += dwBytes;
char* return_pos = NULL;
while ( ( return_pos = strchr( buffer, '\n' ) ) != NULL )
{
char return_buffer[1024];
int bytes_to_copy = return_pos - buffer + 1;
memcpy( return_buffer, buffer, bytes_to_copy );
return_buffer[ bytes_to_copy + 1 ] = '\0';
return_buffer[ bytes_to_copy ] = '\0';
// printf( "received %d : '%s' bytes to copy\n", bytes_to_copy, return_buffer );
rc += vehicle_file_parse( priv, return_buffer );
current_index -= bytes_to_copy;
memmove( buffer, &buffer[ bytes_to_copy ] , sizeof( buffer ) - bytes_to_copy );
}
if (rc) {
priv->no_data_count = 0;
callback_list_call_attr_0(priv->cbl, attr_position_coord_geo);
if (rc > 1)
dbg(0, "Can not keep with gps data delay is %d seconds\n", rc - 1);
}
}
else
{
priv->no_data_count++;
}
dbg(2, "leave, return '1', priv->no_data_count='%d'\n", priv->no_data_count);
return 1;
}
/** @fn static void vehicle_file_io(struct vehicle_priv *priv)
*****************************************************************************
* @b Description: function to get data from GPS
*****************************************************************************
* @param priv : pointer on the private data of the plugin
*****************************************************************************
* @remarks
*****************************************************************************
**/
static void
vehicle_file_io(struct vehicle_priv *priv)
{
int size, rc = 0;
char *str, *tok;
dbg(1, "vehicle_file_io : enter\n");
if (priv->process_statefile) {
unsigned char *data;
priv->process_statefile=0;
if (file_get_contents(priv->statefile, &data, &size)) {
if (size > buffer_size)
size=buffer_size;
memcpy(priv->buffer, data, size);
priv->buffer_pos=0;
g_free(data);
} else
return;
} else {
size = read(priv->fd, priv->buffer + priv->buffer_pos, buffer_size - priv->buffer_pos - 1);
}
if (size <= 0) {
switch (priv->on_eof) {
case 0:
vehicle_file_close(priv);
vehicle_file_open(priv);
break;
case 1:
vehicle_file_disable_watch(priv);
break;
case 2:
exit(0);
break;
}
return;
}
priv->buffer_pos += size;
priv->buffer[priv->buffer_pos] = '\0';
dbg(1, "size=%d pos=%d buffer='%s'\n", size,
priv->buffer_pos, priv->buffer);
str = priv->buffer;
while ((tok = strchr(str, '\n'))) {
*tok++ = '\0';
dbg(1, "line='%s'\n", str);
rc +=vehicle_file_parse(priv, str);
str = tok;
if (priv->file_type == file_type_file && rc)
break;
}
if (str != priv->buffer) {
size = priv->buffer + priv->buffer_pos - str;
memmove(priv->buffer, str, size + 1);
priv->buffer_pos = size;
dbg(1, "now pos=%d buffer='%s'\n",
priv->buffer_pos, priv->buffer);
} else if (priv->buffer_pos == buffer_size - 1) {
dbg(0,
"Overflow. Most likely wrong baud rate or no nmea protocol\n");
priv->buffer_pos = 0;
}
if (rc)
callback_list_call_attr_0(priv->cbl, attr_position_coord_geo);
}