49 lines
1.4 KiB
C
49 lines
1.4 KiB
C
/* FreeRDP: A Remote Desktop Protocol Client
|
|
* Add 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"
|
|
|
|
/* ----------------------------------------------------------------------------
|
|
* 16-bit signed add with saturation (under and over).
|
|
*/
|
|
static pstatus_t general_add_16s(const INT16* pSrc1, const INT16* pSrc2, INT16* pDst, UINT32 len)
|
|
{
|
|
while (len--)
|
|
{
|
|
INT32 k = (INT32)(*pSrc1++) + (INT32)(*pSrc2++);
|
|
|
|
if (k > 32767)
|
|
*pDst++ = ((INT16)32767);
|
|
else if (k < -32768)
|
|
*pDst++ = ((INT16)-32768);
|
|
else
|
|
*pDst++ = (INT16)k;
|
|
}
|
|
|
|
return PRIMITIVES_SUCCESS;
|
|
}
|
|
|
|
/* ------------------------------------------------------------------------- */
|
|
void primitives_init_add(primitives_t* prims)
|
|
{
|
|
prims->add_16s = general_add_16s;
|
|
}
|