mirror of https://github.com/FreeRDP/FreeRDP
116 lines
3.3 KiB
C
116 lines
3.3 KiB
C
/* FreeRDP: A Remote Desktop Protocol Client
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* Shift operations.
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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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#include <freerdp/config.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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/* ------------------------------------------------------------------------- */
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static INLINE pstatus_t general_lShiftC_16s(const INT16* pSrc, UINT32 val, INT16* pDst, UINT32 len)
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{
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if (val == 0)
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return PRIMITIVES_SUCCESS;
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if (val >= 16)
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return -1;
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while (len--)
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*pDst++ = (INT16)((UINT16)*pSrc++ << val);
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return PRIMITIVES_SUCCESS;
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}
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/* ------------------------------------------------------------------------- */
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static INLINE pstatus_t general_rShiftC_16s(const INT16* pSrc, UINT32 val, INT16* pDst, UINT32 len)
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{
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if (val == 0)
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return PRIMITIVES_SUCCESS;
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if (val >= 16)
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return -1;
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while (len--)
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*pDst++ = *pSrc++ >> val;
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return PRIMITIVES_SUCCESS;
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}
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/* ------------------------------------------------------------------------- */
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static INLINE pstatus_t general_lShiftC_16u(const UINT16* pSrc, UINT32 val, UINT16* pDst,
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UINT32 len)
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{
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if (val == 0)
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return PRIMITIVES_SUCCESS;
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if (val >= 16)
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return -1;
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while (len--)
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*pDst++ = (INT16)((UINT16)*pSrc++ << val);
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return PRIMITIVES_SUCCESS;
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}
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/* ------------------------------------------------------------------------- */
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static INLINE pstatus_t general_rShiftC_16u(const UINT16* pSrc, UINT32 val, UINT16* pDst,
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UINT32 len)
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{
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if (val == 0)
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return PRIMITIVES_SUCCESS;
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if (val >= 16)
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return -1;
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while (len--)
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*pDst++ = *pSrc++ >> val;
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return PRIMITIVES_SUCCESS;
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}
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/* ------------------------------------------------------------------------- */
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static INLINE pstatus_t general_shiftC_16s(const INT16* pSrc, INT32 val, INT16* pDst, UINT32 len)
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{
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if (val == 0)
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return PRIMITIVES_SUCCESS;
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if (val < 0)
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return general_rShiftC_16s(pSrc, -val, pDst, len);
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else
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return general_lShiftC_16s(pSrc, val, pDst, len);
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}
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/* ------------------------------------------------------------------------- */
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static INLINE pstatus_t general_shiftC_16u(const UINT16* pSrc, INT32 val, UINT16* pDst, UINT32 len)
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{
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if (val == 0)
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return PRIMITIVES_SUCCESS;
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if (val < 0)
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return general_rShiftC_16u(pSrc, -val, pDst, len);
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else
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return general_lShiftC_16u(pSrc, val, pDst, len);
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}
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/* ------------------------------------------------------------------------- */
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void primitives_init_shift(primitives_t* prims)
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{
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/* Start with the default. */
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prims->lShiftC_16s = general_lShiftC_16s;
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prims->rShiftC_16s = general_rShiftC_16s;
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prims->lShiftC_16u = general_lShiftC_16u;
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prims->rShiftC_16u = general_rShiftC_16u;
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/* Wrappers */
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prims->shiftC_16s = general_shiftC_16s;
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prims->shiftC_16u = general_shiftC_16u;
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}
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