mirror of
https://git.rwth-aachen.de/acs/public/villas/node/
synced 2025-03-16 00:00:02 +01:00
Steffen Vogel
8c8a2c57b7
the number of returned samples is now updated in the passed hook_info::count
71 lines
No EOL
1.6 KiB
C
71 lines
No EOL
1.6 KiB
C
/** Convert hook.
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*
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* @author Steffen Vogel <stvogel@eonerc.rwth-aachen.de>
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* @copyright 2017, Institute for Automation of Complex Power Systems, EONERC
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*********************************************************************************/
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/** @addtogroup hooks Hook functions
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* @{
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*/
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#include "hook.h"
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#include "plugin.h"
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struct convert {
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enum {
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TO_FIXED,
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TO_FLOAT
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} mode;
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};
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static int hook_convert(struct hook *h, int when, struct hook_info *j)
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{
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struct convert *p = (struct convert *) h->_vd;
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switch (when) {
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case HOOK_PARSE: {
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const char *mode;
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if (!config_setting_lookup_string(h->cfg, "mode", &mode))
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cerror(h->cfg, "Missing setting 'mode' for hook '%s'", plugin_name(h->_vt));
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if (!strcmp(mode, "fixed"))
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p->mode = TO_FIXED;
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else if (!strcmp(mode, "float"))
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p->mode = TO_FLOAT;
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else
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error("Invalid parameter '%s' for hook 'convert'", mode);
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break;
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}
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case HOOK_READ:
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for (int i = 0; i < j->count; i++) {
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for (int k = 0; k < j->samples[i]->length; k++) {
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switch (p->mode) {
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case TO_FIXED: j->samples[i]->data[k].i = j->samples[i]->data[k].f * 1e3; break;
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case TO_FLOAT: j->samples[i]->data[k].f = j->samples[i]->data[k].i; break;
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}
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}
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}
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break;
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}
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return 0;
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}
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static struct plugin p = {
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.name = "convert",
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.description = "Convert message from / to floating-point / integer",
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.type = PLUGIN_TYPE_HOOK,
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.hook = {
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.priority = 99,
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.size = sizeof(struct convert),
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.cb = hook_convert,
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.when = HOOK_STORAGE | HOOK_PARSE | HOOK_READ
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}
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};
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REGISTER_PLUGIN(&p)
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/** @} */ |