int rtapi_app_main(void)
{
int n, numchan, max_depth, retval;
fifo_t tmp_fifo[MAX_STREAMERS];
/* validate config info */
for ( n = 0 ; n < MAX_STREAMERS ; n++ ) {
if (( cfg[n] == NULL ) || ( *cfg == '\0' ) || ( depth[n] <= 0 )) {
break;
}
tmp_fifo[n].num_pins = parse_types(&(tmp_fifo[n]), cfg[n]);
if ( tmp_fifo[n].num_pins == 0 ) {
rtapi_print_msg(RTAPI_MSG_ERR,
"STREAMER: ERROR: bad config string '%s'\n", cfg[n]);
return -EINVAL;
}
max_depth = MAX_SHMEM / (sizeof(shmem_data_t) * tmp_fifo[n].num_pins);
if ( depth[n] > max_depth ) {
rtapi_print_msg(RTAPI_MSG_ERR,
"STREAMER: ERROR: depth too large, max is %d\n", max_depth);
return -ENOMEM;
}
tmp_fifo[n].depth = depth[n];
}
if ( n == 0 ) {
rtapi_print_msg(RTAPI_MSG_ERR,
"STREAMER: ERROR: no channels specified\n");
return -EINVAL;
}
numchan = n;
/* clear shmem IDs */
for ( n = 0 ; n < MAX_STREAMERS ; n++ ) {
shmem_id[n] = -1;
}
/* have good config info, connect to the HAL */
comp_id = hal_init("streamer");
if (comp_id < 0) {
rtapi_print_msg(RTAPI_MSG_ERR, "STREAMER: ERROR: hal_init() failed\n");
return -EINVAL;
}
/* create the streamers - allocate memory, export pins, etc. */
for (n = 0; n < numchan; n++) {
retval = init_streamer(n, &(tmp_fifo[n]));
if (retval != 0) {
rtapi_print_msg(RTAPI_MSG_ERR,
"STREAMER: ERROR: streamer %d init failed\n", n);
hal_exit(comp_id);
return retval;
}
}
rtapi_print_msg(RTAPI_MSG_INFO,
"STREAMER: installed %d data streamers\n", numchan);
hal_ready(comp_id);
return 0;
}
int rtapi_app_main(void)
{
int n, retval;
comp_id = hal_init("streamer");
if (comp_id < 0) {
rtapi_print_msg(RTAPI_MSG_ERR, "STREAMER: ERROR: hal_init() failed\n");
return -EINVAL;
}
streams = hal_malloc(MAX_STREAMERS * sizeof(streamer_t));
/* validate config info */
for ( n = 0 ; n < MAX_STREAMERS ; n++ ) {
if (( cfg[n] == NULL ) || ( *cfg == '\0' ) || ( depth[n] <= 0 )) {
break;
}
retval = hal_stream_create(&streams[n].fifo, comp_id, STREAMER_SHMEM_KEY+n, depth[n], cfg[n]);
if(retval < 0) {
goto fail;
}
nstreamers++;
retval = init_streamer(n, &streams[n]);
}
if ( n == 0 ) {
rtapi_print_msg(RTAPI_MSG_ERR,
"STREAMER: ERROR: no channels specified\n");
retval = -EINVAL;
goto fail;
}
hal_ready(comp_id);
return 0;
fail:
for(n=0; n<nstreamers; n++) hal_stream_destroy(&streams[n].fifo);
hal_exit(comp_id);
return retval;
}