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/**************************************************************************
*
* Copyright 2008 Tungsten Graphics, Inc., Cedar Park, Texas.
* All Rights Reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the
* "Software"), to deal in the Software without restriction, including
* without limitation the rights to use, copy, modify, merge, publish,
* distribute, sub license, and/or sell copies of the Software, and to
* permit persons to whom the Software is furnished to do so, subject to
* the following conditions:
*
* The above copyright notice and this permission notice (including the
* next paragraph) shall be included in all copies or substantial portions
* of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
* IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
* ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*
**************************************************************************/
/**
* Miscellaneous utility functions.
*/
#include "pipe/p_defines.h"
#include "pipe/p_util.h"
/**
* Copy 2D rect from one place to another.
* Position and sizes are in pixels.
* src_pitch may be negative to do vertical flip of pixels from source.
*/
void
pipe_copy_rect(ubyte * dst,
unsigned cpp,
unsigned dst_pitch,
unsigned dst_x,
unsigned dst_y,
unsigned width,
unsigned height,
const ubyte * src,
int src_pitch,
unsigned src_x,
int src_y)
{
unsigned i;
int src_pitch_pos = src_pitch < 0 ? -src_pitch : src_pitch;
assert(cpp > 0);
assert(src_x >= 0);
assert(src_y >= 0);
assert(dst_x >= 0);
assert(dst_y >= 0);
dst_pitch *= cpp;
src_pitch *= cpp;
src_pitch_pos *= cpp;
dst += dst_x * cpp;
src += src_x * cpp;
dst += dst_y * dst_pitch;
src += src_y * src_pitch_pos;
width *= cpp;
if (width == dst_pitch && width == src_pitch)
memcpy(dst, src, height * width);
else {
for (i = 0; i < height; i++) {
memcpy(dst, src, width);
dst += dst_pitch;
src += src_pitch;
}
}
}
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