122 lines
2.0 KiB
C
122 lines
2.0 KiB
C
/*
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UTILS/PBUFSTDC.h
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Copyright (C) 2018 Paul C. Pratt
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You can redistribute this file and/or modify it under the terms
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of version 2 of the GNU General Public License as published by
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the Free Software Foundation. You should have received a copy
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of the license along with this file; see the file COPYING.
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This file is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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license for more details.
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*/
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/*
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Parameter BUFfers implemented with STanDard C library
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*/
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#if IncludePbufs
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static void *PbufDat[NumPbufs];
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#endif
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#if IncludePbufs
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static MacErr_t PbufNewFromPtr(void *p, uint32_t count, tPbuf *r)
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{
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tPbuf i;
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MacErr_t err;
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if (! FirstFreePbuf(&i)) {
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free(p);
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err = mnvm_miscErr;
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} else {
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*r = i;
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PbufDat[i] = p;
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PbufNewNotify(i, count);
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err = mnvm_noErr;
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}
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return err;
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}
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#endif
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#if IncludePbufs
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static void PbufKillToPtr(void **p, uint32_t *count, tPbuf r)
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{
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*p = PbufDat[r];
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*count = PbufSize[r];
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PbufDisposeNotify(r);
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}
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#endif
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#if IncludePbufs
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GLOBALOSGLUFUNC MacErr_t PbufNew(uint32_t count, tPbuf *r)
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{
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MacErr_t err = mnvm_miscErr;
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void *p = calloc(1, count);
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if (NULL != p) {
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err = PbufNewFromPtr(p, count, r);
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}
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return err;
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}
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#endif
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#if IncludePbufs
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GLOBALOSGLUPROC PbufDispose(tPbuf i)
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{
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void *p;
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uint32_t count;
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PbufKillToPtr(&p, &count, i);
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free(p);
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}
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#endif
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#if IncludePbufs
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static void UnInitPbufs(void)
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{
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tPbuf i;
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for (i = 0; i < NumPbufs; ++i) {
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if (PbufIsAllocated(i)) {
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PbufDispose(i);
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}
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}
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}
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#endif
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#if IncludePbufs
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#define PbufHaveLock 1
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#endif
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#if IncludePbufs
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static uint8_t * PbufLock(tPbuf i)
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{
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return (uint8_t *)PbufDat[i];
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}
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#endif
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#if IncludePbufs
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#define PbufUnlock(i)
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#endif
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#if IncludePbufs
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GLOBALOSGLUPROC PbufTransfer(uint8_t * Buffer,
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tPbuf i, uint32_t offset, uint32_t count, bool IsWrite)
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{
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void *p = ((uint8_t *)PbufDat[i]) + offset;
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if (IsWrite) {
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(void) memcpy(p, Buffer, count);
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} else {
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(void) memcpy(Buffer, p, count);
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}
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}
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#endif
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