78 lines
2.4 KiB
C
78 lines
2.4 KiB
C
/**
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* Copyright (c) 2014-2018 Enzien Audio Ltd.
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*
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* Permission to use, copy, modify, and/or distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES WITH
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* REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
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* AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT,
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* INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
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* LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR
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* OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
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* PERFORMANCE OF THIS SOFTWARE.
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*/
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#include "HvSignalTabread.h"
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hv_size_t sTabread_init(SignalTabread *o, HvTable *table, bool forceAlignedLoads) {
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o->table = table;
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o->head = 0;
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o->forceAlignedLoads = forceAlignedLoads;
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return 0;
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}
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void sTabread_onMessage(HeavyContextInterface *_c, SignalTabread *o, int letIn, const HvMessage *m,
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void (*sendMessage)(HeavyContextInterface *, int, const HvMessage *)) {
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switch (letIn) {
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case 0: {
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if (o->table != NULL) {
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switch (msg_getType(m,0)) {
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case HV_MSG_BANG: o->head = 0; break;
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case HV_MSG_FLOAT: {
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hv_uint32_t h = (hv_uint32_t) hv_abs_f(msg_getFloat(m,0));
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if (msg_getFloat(m,0) < 0.0f) {
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// if input is negative, wrap around the end of the table
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h = hTable_getSize(o->table) - h;
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}
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o->head = o->forceAlignedLoads ? (h & ~HV_N_SIMD_MASK) : h;
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// output new head
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HvMessage *n = HV_MESSAGE_ON_STACK(1);
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msg_initWithFloat(n, msg_getTimestamp(m), (float) o->head);
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sendMessage(_c, 1, n);
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break;
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}
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default: break;
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}
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}
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break;
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}
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case 1: {
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if (msg_isHashLike(m,0)) {
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o->table = hv_table_get(_c, msg_getHash(m,0));
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}
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break;
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}
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default: break;
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}
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}
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#if HV_APPLE
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#pragma mark - Tabhead
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#endif
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void sTabhead_onMessage(HeavyContextInterface *_c, SignalTabhead *o, const HvMessage *m) {
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if (msg_isHashLike(m,0)) {
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o->table = hv_table_get(_c, msg_getHash(m,0));
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}
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}
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hv_size_t sTabhead_init(SignalTabhead *o, HvTable *table) {
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o->table = table;
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return 0;
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}
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