111 lines
2.4 KiB
C++
111 lines
2.4 KiB
C++
/* SPDX-FileCopyrightText: 2001-2002 NaN Holding BV. All rights reserved.
|
|
*
|
|
* SPDX-License-Identifier: GPL-2.0-or-later */
|
|
|
|
/** \file
|
|
* \ingroup imbuf
|
|
*/
|
|
|
|
#include "BLI_utildefines.h"
|
|
|
|
#include "MEM_guardedalloc.h"
|
|
|
|
#include "IMB_imbuf.h"
|
|
#include "IMB_imbuf_types.h"
|
|
#include "imbuf.h"
|
|
|
|
void IMB_flipy(ImBuf *ibuf)
|
|
{
|
|
size_t x_size, y_size;
|
|
|
|
if (ibuf == nullptr) {
|
|
return;
|
|
}
|
|
|
|
if (ibuf->byte_buffer.data) {
|
|
uint *top, *bottom, *line;
|
|
|
|
x_size = ibuf->x;
|
|
y_size = ibuf->y;
|
|
|
|
const size_t stride = x_size * sizeof(int);
|
|
|
|
top = (uint *)ibuf->byte_buffer.data;
|
|
bottom = top + ((y_size - 1) * x_size);
|
|
line = static_cast<uint *>(MEM_mallocN(stride, "linebuf"));
|
|
|
|
y_size >>= 1;
|
|
|
|
for (; y_size > 0; y_size--) {
|
|
memcpy(line, top, stride);
|
|
memcpy(top, bottom, stride);
|
|
memcpy(bottom, line, stride);
|
|
bottom -= x_size;
|
|
top += x_size;
|
|
}
|
|
|
|
MEM_freeN(line);
|
|
}
|
|
|
|
if (ibuf->float_buffer.data) {
|
|
float *topf = nullptr, *bottomf = nullptr, *linef = nullptr;
|
|
|
|
x_size = ibuf->x;
|
|
y_size = ibuf->y;
|
|
|
|
const size_t stride = x_size * 4 * sizeof(float);
|
|
|
|
topf = ibuf->float_buffer.data;
|
|
bottomf = topf + 4 * ((y_size - 1) * x_size);
|
|
linef = static_cast<float *>(MEM_mallocN(stride, "linebuf"));
|
|
|
|
y_size >>= 1;
|
|
|
|
for (; y_size > 0; y_size--) {
|
|
memcpy(linef, topf, stride);
|
|
memcpy(topf, bottomf, stride);
|
|
memcpy(bottomf, linef, stride);
|
|
bottomf -= 4 * x_size;
|
|
topf += 4 * x_size;
|
|
}
|
|
|
|
MEM_freeN(linef);
|
|
}
|
|
}
|
|
|
|
void IMB_flipx(ImBuf *ibuf)
|
|
{
|
|
int x, y, xr, xl, yi;
|
|
float px_f[4];
|
|
|
|
if (ibuf == nullptr) {
|
|
return;
|
|
}
|
|
|
|
x = ibuf->x;
|
|
y = ibuf->y;
|
|
|
|
if (ibuf->byte_buffer.data) {
|
|
uint *rect = (uint *)ibuf->byte_buffer.data;
|
|
for (yi = y - 1; yi >= 0; yi--) {
|
|
const size_t x_offset = size_t(x) * yi;
|
|
for (xr = x - 1, xl = 0; xr >= xl; xr--, xl++) {
|
|
SWAP(uint, rect[x_offset + xr], rect[x_offset + xl]);
|
|
}
|
|
}
|
|
}
|
|
|
|
if (ibuf->float_buffer.data) {
|
|
float *rect_float = ibuf->float_buffer.data;
|
|
for (yi = y - 1; yi >= 0; yi--) {
|
|
const size_t x_offset = size_t(x) * yi;
|
|
for (xr = x - 1, xl = 0; xr >= xl; xr--, xl++) {
|
|
memcpy(&px_f, &rect_float[(x_offset + xr) * 4], sizeof(float[4]));
|
|
memcpy(
|
|
&rect_float[(x_offset + xr) * 4], &rect_float[(x_offset + xl) * 4], sizeof(float[4]));
|
|
memcpy(&rect_float[(x_offset + xl) * 4], &px_f, sizeof(float[4]));
|
|
}
|
|
}
|
|
}
|
|
}
|