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 "SignalTabread.h"
chris@163: 
chris@163: hv_size_t sTabread_init(SignalTabread *o, HvTable *table, bool forceAlignedLoads) {
chris@163:   o->table = table;
chris@163:   o->head = 0;
chris@163:   o->forceAlignedLoads = forceAlignedLoads;
chris@163:   return 0;
chris@163: }
chris@163: 
chris@163: void sTabread_onMessage(HvBase *_c, SignalTabread *o, int letIn, const HvMessage *const m) {
chris@163:   switch (letIn) {
chris@163:     case 0: {
chris@163:       if (o->table != NULL) {
chris@163:         switch (msg_getType(m,0)) {
chris@163:           case BANG: o->head = 0; break;
chris@163:           case FLOAT: {
chris@163:             hv_uint32_t h = (hv_uint32_t) hv_abs_f(msg_getFloat(m,0));
chris@163:             if (msg_getFloat(m,0) < 0.0f) {
chris@163:               // if input is negative, wrap around the end of the table
chris@163:               h = (hv_uint32_t) hTable_getSize(o->table) - h;
chris@163:             }
chris@163:             o->head = o->forceAlignedLoads ? h & ~HV_N_SIMD_MASK : h;
chris@163:             break;
chris@163:           }
chris@163:           default: break;
chris@163:         }
chris@163:       }
chris@163:       break;
chris@163:     }
chris@163:     case 1: {
chris@163:       if (msg_isHashLike(m,0)) {
chris@163:         o->table = ctx_getTableForHash(_c, msg_getHash(m,0));
chris@163:       }
chris@163:       break;
chris@163:     }
chris@163:     default: break;
chris@163:   }
chris@163: }
chris@163: 
chris@163: 
chris@163: 
chris@163: #if HV_APPLE
chris@163: #pragma mark - Tabhead
chris@163: #endif
chris@163: 
chris@163: void sTabhead_onMessage(HvBase *_c, SignalTabhead *o, const HvMessage *const m) {
chris@163:   if (msg_isHashLike(m,0)) {
chris@163:     o->table = ctx_getTableForHash(_c, msg_getHash(m,0));
chris@163:   }
chris@163: }
chris@163: 
chris@163: hv_size_t sTabhead_init(SignalTabhead *o, HvTable *table) {
chris@163:   o->table = table;
chris@163:   return 0;
chris@163: }