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/* FreeRDP: A Remote Desktop Protocol Client
* Shift operations.
* vi:ts=4 sw=4:
*
* (c) Copyright 2012 Hewlett-Packard Development Company, L.P.
* Licensed under the Apache License, Version 2.0 (the "License"); you may
* not use this file except in compliance with the License. You may obtain
* a copy of the License at http://www.apache.org/licenses/LICENSE-2.0.
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
* or implied. See the License for the specific language governing
* permissions and limitations under the License.
*/
#include <freerdp/config.h>
#include <freerdp/types.h>
#include <freerdp/primitives.h>
#include "prim_internal.h"
/* ------------------------------------------------------------------------- */
static INLINE pstatus_t general_lShiftC_16s(const INT16* pSrc, UINT32 val, INT16* pDst, UINT32 len)
{
if (val == 0)
return PRIMITIVES_SUCCESS;
if (val >= 16)
return -1;
while (len--)
*pDst++ = (INT16)((UINT16)*pSrc++ << val);
return PRIMITIVES_SUCCESS;
}
/* ------------------------------------------------------------------------- */
static INLINE pstatus_t general_rShiftC_16s(const INT16* pSrc, UINT32 val, INT16* pDst, UINT32 len)
{
if (val == 0)
return PRIMITIVES_SUCCESS;
if (val >= 16)
return -1;
while (len--)
*pDst++ = *pSrc++ >> val;
return PRIMITIVES_SUCCESS;
}
/* ------------------------------------------------------------------------- */
static INLINE pstatus_t general_lShiftC_16u(const UINT16* pSrc, UINT32 val, UINT16* pDst,
UINT32 len)
{
if (val == 0)
return PRIMITIVES_SUCCESS;
if (val >= 16)
return -1;
while (len--)
*pDst++ = (INT16)((UINT16)*pSrc++ << val);
return PRIMITIVES_SUCCESS;
}
/* ------------------------------------------------------------------------- */
static INLINE pstatus_t general_rShiftC_16u(const UINT16* pSrc, UINT32 val, UINT16* pDst,
UINT32 len)
{
if (val == 0)
return PRIMITIVES_SUCCESS;
if (val >= 16)
return -1;
while (len--)
*pDst++ = *pSrc++ >> val;
return PRIMITIVES_SUCCESS;
}
/* ------------------------------------------------------------------------- */
static INLINE pstatus_t general_shiftC_16s(const INT16* pSrc, INT32 val, INT16* pDst, UINT32 len)
{
if (val == 0)
return PRIMITIVES_SUCCESS;
if (val < 0)
return general_rShiftC_16s(pSrc, -val, pDst, len);
else
return general_lShiftC_16s(pSrc, val, pDst, len);
}
/* ------------------------------------------------------------------------- */
static INLINE pstatus_t general_shiftC_16u(const UINT16* pSrc, INT32 val, UINT16* pDst, UINT32 len)
{
if (val == 0)
return PRIMITIVES_SUCCESS;
if (val < 0)
return general_rShiftC_16u(pSrc, -val, pDst, len);
else
return general_lShiftC_16u(pSrc, val, pDst, len);
}
/* ------------------------------------------------------------------------- */
void primitives_init_shift(primitives_t* prims)
{
/* Start with the default. */
prims->lShiftC_16s = general_lShiftC_16s;
prims->rShiftC_16s = general_rShiftC_16s;
prims->lShiftC_16u = general_lShiftC_16u;
prims->rShiftC_16u = general_rShiftC_16u;
/* Wrappers */
prims->shiftC_16s = general_shiftC_16s;
prims->shiftC_16u = general_shiftC_16u;
}
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