You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
175 lines
4.4 KiB
175 lines
4.4 KiB
3 months ago
|
/*
|
||
|
|
* Image Library -- Pixels iteration
|
||
|
|
*
|
||
|
|
* (c) 2006 Pavel Charvat <pchar@ucw.cz>
|
||
|
|
*
|
||
|
|
* This software may be freely distributed and used according to the terms
|
||
|
|
* of the GNU Lesser General Public License.
|
||
|
|
*/
|
||
|
|
|
||
|
|
#ifndef IMAGE_WALK_PREFIX
|
||
|
|
# error Undefined IMAGE_WALK_PREFIX
|
||
|
|
#endif
|
||
|
|
|
||
|
|
#define P(x) IMAGE_WALK_PREFIX(x)
|
||
|
|
|
||
|
|
#if !defined(IMAGE_WALK_UNROLL)
|
||
|
|
# define IMAGE_WALK_UNROLL 1
|
||
|
|
#elif IMAGE_WALK_UNROLL != 1 && IMAGE_WALK_UNROLL != 2 && IMAGE_WALK_UNROLL != 4
|
||
|
|
# error IMAGE_WALK_UNROLL must be 1, 2 or 4
|
||
|
|
#endif
|
||
|
|
|
||
|
|
#ifndef IMAGE_WALK_IMAGE
|
||
|
|
# define IMAGE_WALK_IMAGE P(img)
|
||
|
|
#endif
|
||
|
|
#ifndef IMAGE_WALK_PIXELS
|
||
|
|
# define IMAGE_WALK_PIXELS (IMAGE_WALK_IMAGE->pixels)
|
||
|
|
#endif
|
||
|
|
#ifndef IMAGE_WALK_COLS
|
||
|
|
# define IMAGE_WALK_COLS (IMAGE_WALK_IMAGE->cols)
|
||
|
|
#endif
|
||
|
|
#ifndef IMAGE_WALK_ROWS
|
||
|
|
# define IMAGE_WALK_ROWS (IMAGE_WALK_IMAGE->rows)
|
||
|
|
#endif
|
||
|
|
#ifndef IMAGE_WALK_COL_STEP
|
||
|
|
# define IMAGE_WALK_COL_STEP (IMAGE_WALK_IMAGE->pixel_size)
|
||
|
|
#endif
|
||
|
|
#ifndef IMAGE_WALK_ROW_STEP
|
||
|
|
# define IMAGE_WALK_ROW_STEP (IMAGE_WALK_IMAGE->row_size)
|
||
|
|
#endif
|
||
|
|
|
||
|
|
#ifdef IMAGE_WALK_DOUBLE
|
||
|
|
# ifndef IMAGE_WALK_SEC_IMAGE
|
||
|
|
# define IMAGE_WALK_SEC_IMAGE P(sec_img)
|
||
|
|
# endif
|
||
|
|
# ifndef IMAGE_WALK_SEC_PIXELS
|
||
|
|
# define IMAGE_WALK_SEC_PIXELS (IMAGE_WALK_SEC_IMAGE->pixels)
|
||
|
|
# endif
|
||
|
|
# ifndef IMAGE_WALK_SEC_COLS
|
||
|
|
# define IMAGE_WALK_SEC_COLS (IMAGE_WALK_SEC_IMAGE->cols)
|
||
|
|
# endif
|
||
|
|
# ifndef IMAGE_WALK_SEC_ROWS
|
||
|
|
# define IMAGE_WALK_SEC_ROWS (IMAGE_WALK_SEC_IMAGE->rows)
|
||
|
|
# endif
|
||
|
|
# ifndef IMAGE_WALK_SEC_COL_STEP
|
||
|
|
# define IMAGE_WALK_SEC_COL_STEP (IMAGE_WALK_SEC_IMAGE->pixel_size)
|
||
|
|
# endif
|
||
|
|
# ifndef IMAGE_WALK_SEC_ROW_STEP
|
||
|
|
# define IMAGE_WALK_SEC_ROW_STEP (IMAGE_WALK_SEC_IMAGE->row_size)
|
||
|
|
# endif
|
||
|
|
# define IMAGE_WALK__STEP IMAGE_WALK_DO_STEP; P(pos) += P(col_step); P(sec_pos) += P(sec_col_step)
|
||
|
|
#else
|
||
|
|
# define IMAGE_WALK__STEP IMAGE_WALK_DO_STEP; P(pos) += P(col_step)
|
||
|
|
#endif
|
||
|
|
|
||
|
|
#ifndef IMAGE_WALK_DO_START
|
||
|
|
# define IMAGE_WALK_DO_START
|
||
|
|
#endif
|
||
|
|
|
||
|
|
#ifndef IMAGE_WALK_DO_END
|
||
|
|
# define IMAGE_WALK_DO_END
|
||
|
|
#endif
|
||
|
|
|
||
|
|
#ifndef IMAGE_WALK_DO_ROW_START
|
||
|
|
# define IMAGE_WALK_DO_ROW_START
|
||
|
|
#endif
|
||
|
|
|
||
|
|
#ifndef IMAGE_WALK_DO_ROW_END
|
||
|
|
# define IMAGE_WALK_DO_ROW_END
|
||
|
|
#endif
|
||
|
|
|
||
|
|
#ifndef IMAGE_WALK_DO_STEP
|
||
|
|
# define IMAGE_WALK_DO_STEP
|
||
|
|
#endif
|
||
|
|
|
||
|
|
#ifndef IMAGE_WALK_INLINE
|
||
|
|
static void
|
||
|
|
#ifdef IMAGE_WALK_FUNC_NAME
|
||
|
|
IMAGE_WALK_FUNC_NAME
|
||
|
|
#else
|
||
|
|
P(walk)
|
||
|
|
#endif
|
||
|
|
(struct image *P(img)
|
||
|
|
# ifdef IMAGE_WALK_DOUBLE
|
||
|
|
, struct image *P(sec_img)
|
||
|
|
# endif
|
||
|
|
# ifdef IMAGE_WALK_EXTRA_ARGS
|
||
|
|
, IMAGE_WALK_EXTRA_ARGS
|
||
|
|
# endif
|
||
|
|
)
|
||
|
|
#endif
|
||
|
|
{
|
||
|
|
uint P(cols) = IMAGE_WALK_COLS;
|
||
|
|
uint P(rows) = IMAGE_WALK_ROWS;
|
||
|
|
# if IMAGE_WALK_UNROLL > 1
|
||
|
|
uint P(cols_unroll_block_count) = P(cols) / IMAGE_WALK_UNROLL;
|
||
|
|
uint P(cols_unroll_end_count) = P(cols) % IMAGE_WALK_UNROLL;
|
||
|
|
# endif
|
||
|
|
byte *P(pos) = IMAGE_WALK_PIXELS, *P(row_start) = P(pos);
|
||
|
|
int P(col_step) = IMAGE_WALK_COL_STEP;
|
||
|
|
int P(row_step) = IMAGE_WALK_ROW_STEP;
|
||
|
|
# ifdef IMAGE_WALK_DOUBLE
|
||
|
|
byte *P(sec_pos) = IMAGE_WALK_SEC_PIXELS, *P(sec_row_start) = P(sec_pos);
|
||
|
|
int P(sec_col_step) = IMAGE_WALK_SEC_COL_STEP;
|
||
|
|
int P(sec_row_step) = IMAGE_WALK_SEC_ROW_STEP;
|
||
|
|
# endif
|
||
|
|
IMAGE_WALK_DO_START;
|
||
|
|
while (P(rows)--)
|
||
|
|
{
|
||
|
|
IMAGE_WALK_DO_ROW_START;
|
||
|
|
# if IMAGE_WALK_UNROLL == 1
|
||
|
|
for (uint P(_i) = P(cols); P(_i)--; )
|
||
|
|
# else
|
||
|
|
for (uint P(_i) = P(cols_unroll_block_count); P(_i)--; )
|
||
|
|
# endif
|
||
|
|
{
|
||
|
|
# if IMAGE_WALK_UNROLL >= 4
|
||
|
|
IMAGE_WALK__STEP;
|
||
|
|
IMAGE_WALK__STEP;
|
||
|
|
# endif
|
||
|
|
# if IMAGE_WALK_UNROLL >= 2
|
||
|
|
IMAGE_WALK__STEP;
|
||
|
|
# endif
|
||
|
|
IMAGE_WALK__STEP;
|
||
|
|
}
|
||
|
|
# if IMAGE_WALK_UNROLL > 1
|
||
|
|
for (uint P(_i) = P(cols_unroll_end_count); P(_i)--; )
|
||
|
|
{
|
||
|
|
IMAGE_WALK__STEP;
|
||
|
|
}
|
||
|
|
# endif
|
||
|
|
IMAGE_WALK_DO_ROW_END;
|
||
|
|
P(pos) = (P(row_start) += P(row_step));
|
||
|
|
# ifdef IMAGE_WALK_DOUBLE
|
||
|
|
P(sec_pos) = (P(sec_row_start) += P(sec_row_step));
|
||
|
|
# endif
|
||
|
|
}
|
||
|
|
IMAGE_WALK_DO_END;
|
||
|
|
}
|
||
|
|
|
||
|
|
#undef IMAGE_WALK_PREFIX
|
||
|
|
#undef IMAGE_WALK_FUNC_NAME
|
||
|
|
#undef IMAGE_WALK_INLINE
|
||
|
|
#undef IMAGE_WALK_UNROLL
|
||
|
|
#undef IMAGE_WALK_DOUBLE
|
||
|
|
#undef IMAGE_WALK_EXTRA_ARGS
|
||
|
|
#undef IMAGE_WALK_IMAGE
|
||
|
|
#undef IMAGE_WALK_PIXELS
|
||
|
|
#undef IMAGE_WALK_COLS
|
||
|
|
#undef IMAGE_WALK_ROWS
|
||
|
|
#undef IMAGE_WALK_COL_STEP
|
||
|
|
#undef IMAGE_WALK_ROW_STEP
|
||
|
|
#undef IMAGE_WALK_SEC_IMAGE
|
||
|
|
#undef IMAGE_WALK_SEC_PIXELS
|
||
|
|
#undef IMAGE_WALK_SEC_COLS
|
||
|
|
#undef IMAGE_WALK_SEC_ROWS
|
||
|
|
#undef IMAGE_WALK_SEC_COL_STEP
|
||
|
|
#undef IMAGE_WALK_SEC_ROW_STEP
|
||
|
|
#undef IMAGE_WALK_DO_START
|
||
|
|
#undef IMAGE_WALK_DO_END
|
||
|
|
#undef IMAGE_WALK_DO_ROW_START
|
||
|
|
#undef IMAGE_WALK_DO_ROW_END
|
||
|
|
#undef IMAGE_WALK_DO_STEP
|
||
|
|
#undef IMAGE_WALK__STEP
|
||
|
|
#undef P
|