Function srd_pd_output_callback_add

libsigrokdecode4DSL/session.c:380–404

* Register/add a decoder output callback function. * * The function will be called when a protocol decoder sends output back * to the PD controller (except for Python objects, which only go up the * stack). * * @param sess The output session in which to register the callback. * Must not be NULL. * @param output_type The output type this callback will receive. Only one *

 * @since 0.3.0
 */
SRD_API int srd_pd_output_callback_add(struct srd_session *sess,
		int output_type, srd_pd_output_callback cb, void *cb_data)
{
	struct srd_pd_callback *pd_cb;

	if (!sess)
		return SRD_ERR_ARG;

	srd_dbg("Registering new callback for output type %s.",
		output_type_name(output_type));

	pd_cb = malloc(sizeof(struct srd_pd_callback));
	if (pd_cb == NULL){
		srd_err("%s,ERROR:failed to alloc memory.", __func__);
		return SRD_ERR;
	}
	memset(pd_cb, 0, sizeof(struct srd_pd_callback));
	
	pd_cb->output_type = output_type;
	pd_cb->cb = cb;
	pd_cb->cb_data = cb_data;
	sess->callbacks = g_slist_append(sess->callbacks, pd_cb);

	return SRD_OK;
}

/** @private */
SRD_PRIV struct srd_pd_callback *srd_pd_output_callback_find(