mirror of https://github.com/FreeRDP/FreeRDP
129 lines
3.0 KiB
C
129 lines
3.0 KiB
C
/* FreeRDP: A Remote Desktop Protocol Client
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* Routines to set a chunk of memory to a constant.
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* vi:ts=4 sw=4:
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*
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* (c) Copyright 2012 Hewlett-Packard Development Company, L.P.
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* Licensed under the Apache License, Version 2.0 (the "License"); you may
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* not use this file except in compliance with the License. You may obtain
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* a copy of the License at http://www.apache.org/licenses/LICENSE-2.0.
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
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* or implied. See the License for the specific language governing
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* permissions and limitations under the License.
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*
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*/
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#include <freerdp/config.h>
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#include <string.h>
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#include <freerdp/types.h>
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#include <freerdp/primitives.h>
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#include "prim_internal.h"
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#include "prim_set.h"
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/* ========================================================================= */
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static pstatus_t general_set_8u(BYTE val, BYTE* pDst, UINT32 len)
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{
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memset((void*)pDst, (int)val, (size_t)len);
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return PRIMITIVES_SUCCESS;
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}
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/* ------------------------------------------------------------------------- */
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static pstatus_t general_zero(void* pDst, size_t len)
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{
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memset(pDst, 0, len);
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return PRIMITIVES_SUCCESS;
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}
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/* ========================================================================= */
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static pstatus_t general_set_32s(INT32 val, INT32* pDst, UINT32 len)
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{
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INT32* dptr = pDst;
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size_t span = 0;
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size_t remaining = 0;
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primitives_t* prims = NULL;
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if (len < 256)
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{
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while (len--)
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*dptr++ = val;
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return PRIMITIVES_SUCCESS;
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}
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/* else quadratic growth memcpy algorithm */
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span = 1;
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*dptr = val;
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remaining = len - 1;
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prims = primitives_get();
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while (remaining)
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{
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size_t thiswidth = span;
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if (thiswidth > remaining)
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thiswidth = remaining;
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prims->copy_8u((BYTE*)dptr, (BYTE*)(dptr + span), thiswidth << 2);
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remaining -= thiswidth;
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span <<= 1;
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}
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return PRIMITIVES_SUCCESS;
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}
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/* ------------------------------------------------------------------------- */
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static pstatus_t general_set_32u(UINT32 val, UINT32* pDst, UINT32 len)
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{
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UINT32* dptr = pDst;
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size_t span = 0;
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size_t remaining = 0;
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primitives_t* prims = NULL;
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if (len < 256)
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{
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while (len--)
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*dptr++ = val;
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return PRIMITIVES_SUCCESS;
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}
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/* else quadratic growth memcpy algorithm */
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span = 1;
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*dptr = val;
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remaining = len - 1;
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prims = primitives_get();
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while (remaining)
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{
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size_t thiswidth = span;
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if (thiswidth > remaining)
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thiswidth = remaining;
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prims->copy_8u((BYTE*)dptr, (BYTE*)(dptr + span), thiswidth << 2);
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remaining -= thiswidth;
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span <<= 1;
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}
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return PRIMITIVES_SUCCESS;
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}
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/* ------------------------------------------------------------------------- */
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void primitives_init_set(primitives_t* WINPR_RESTRICT prims)
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{
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/* Start with the default. */
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prims->set_8u = general_set_8u;
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prims->set_32s = general_set_32s;
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prims->set_32u = general_set_32u;
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prims->zero = general_zero;
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}
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void primitives_init_set_opt(primitives_t* WINPR_RESTRICT prims)
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{
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primitives_init_set_sse2(prims);
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}
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