chris@163: /**
chris@163:  * Copyright (c) 2014, 2015, Enzien Audio Ltd.
chris@163:  *
chris@163:  * Permission to use, copy, modify, and/or distribute this software for any
chris@163:  * purpose with or without fee is hereby granted, provided that the above
chris@163:  * copyright notice and this permission notice appear in all copies.
chris@163:  *
chris@163:  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES WITH
chris@163:  * REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
chris@163:  * AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT,
chris@163:  * INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
chris@163:  * LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR
chris@163:  * OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
chris@163:  * PERFORMANCE OF THIS SOFTWARE.
chris@163:  */
chris@163: 
chris@163: #include "ControlSlice.h"
chris@163: 
chris@163: hv_size_t cSlice_init(ControlSlice *o, int i, int n) {
chris@163:   o->i = i;
chris@163:   o->n = n;
chris@163:   return 0;
chris@163: }
chris@163: 
chris@163: void cSlice_onMessage(HvBase *_c, ControlSlice *o, int letIn, const HvMessage *const m,
chris@163:     void (*sendMessage)(HvBase *, int, const HvMessage *const)) {
chris@163:   switch (letIn) {
chris@163:     case 0: {
chris@163:       // if the start point is greater than the number of elements in the source message, do nothing
chris@163:       if (o->i < msg_getNumElements(m)) {
chris@163:         int x = msg_getNumElements(m) - o->i; // number of elements in the new message
chris@163:         if (o->n > 0) x = hv_min_i(x, o->n);
chris@163:         HvMessage *n = HV_MESSAGE_ON_STACK(x);
chris@163:         msg_init(n, x, msg_getTimestamp(m));
chris@163:         hv_memcpy(&n->elem, &m->elem+o->i, x*sizeof(Element));
chris@163:         sendMessage(_c, 0, n);
chris@163:       } else {
chris@163:         // if nothing can be sliced, send a bang out of the right outlet
chris@163:         HvMessage *n = HV_MESSAGE_ON_STACK(1);
chris@163:         msg_initWithBang(n, msg_getTimestamp(m));
chris@163:         sendMessage(_c, 1, n);
chris@163:       }
chris@163:       break;
chris@163:     }
chris@163:     case 1: {
chris@163:       if (msg_isFloat(m,0)) {
chris@163:         o->i = (int) msg_getFloat(m,0);
chris@163:         if (msg_isFloat(m,1)) {
chris@163:           o->n = (int) msg_getFloat(m,1);
chris@163:         }
chris@163:       }
chris@163:       break;
chris@163:     }
chris@163:     case 2: {
chris@163:       if (msg_isFloat(m,0)) {
chris@163:         o->n = (int) msg_getFloat(m,0);
chris@163:       }
chris@163:       break;
chris@163:     }
chris@163:     default: break;
chris@163:   }
chris@163: }