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evas/common - scale sample code optimization

This commit is contained in:
ChunEon Park 2013-02-27 22:36:36 +09:00
parent 1121103ecb
commit 4e0b7d7bca
1 changed files with 13 additions and 10 deletions
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23
src/lib/evas/common/evas_scale_sample.c
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@ -63,8 +63,9 @@ evas_common_scale_rgba_sample_draw(RGBA_Image *src, RGBA_Image *dst, int dst_cli
{
int x, y;
int *lin_ptr;
int offset;
DATA32 *buf, *dptr;
DATA32 **row_ptr;
DATA32 *row_ptr;
DATA32 *ptr, *dst_ptr, *src_data, *dst_data;
int src_w, src_h, dst_w, dst_h;
RGBA_Gfx_Func func;
@ -191,10 +192,6 @@ evas_common_scale_rgba_sample_draw(RGBA_Image *src, RGBA_Image *dst, int dst_cli
if ((dst_region_h <= 0) || (src_region_h <= 0)) return;
/* allocate scale lookup tables */
lin_ptr = alloca(dst_clip_w * sizeof(int));
row_ptr = alloca(dst_clip_h * sizeof(DATA32 *));
/* figure out dst jump */
//dst_jump = dst_w - dst_clip_w;
@ -208,7 +205,7 @@ evas_common_scale_rgba_sample_draw(RGBA_Image *src, RGBA_Image *dst, int dst_cli
if ((dst_region_w == src_region_w) && (dst_region_h == src_region_h))
{
ptr = src_data + ((dst_clip_y - dst_region_y + src_region_y) * src_w) + (dst_clip_x - dst_region_x) + src_region_x;
ptr = src_data + (((dst_clip_y - dst_region_y) + src_region_y) * src_w) + ((dst_clip_x - dst_region_x) + src_region_x);
for (y = 0; y < dst_clip_h; y++)
{
/* * blend here [clip_w *] ptr -> dst_ptr * */
@ -220,23 +217,29 @@ evas_common_scale_rgba_sample_draw(RGBA_Image *src, RGBA_Image *dst, int dst_cli
}
else
{
/* allocate scale lookup tables */
lin_ptr = alloca(dst_clip_w * sizeof(int));
/* fill scale tables */
for (x = 0; x < dst_clip_w; x++)
lin_ptr[x] = (((x + dst_clip_x - dst_region_x) * src_region_w) / dst_region_w) + src_region_x;
for (y = 0; y < dst_clip_h; y++)
row_ptr[y] = src_data + (((((y + dst_clip_y - dst_region_y) * src_region_h) / dst_region_h)
+ src_region_y) * src_w);
/* scale to dst */
dptr = dst_ptr;
/* a scanline buffer */
buf = alloca(dst_clip_w * sizeof(DATA32));
offset = dst_clip_y - dst_region_y;
for (y = 0; y < dst_clip_h; y++)
{
dst_ptr = buf;
row_ptr = src_data + (((((y + offset) * src_region_h) / dst_region_h) + src_region_y) * src_w);
for (x = 0; x < dst_clip_w; x++)
{
ptr = row_ptr[y] + lin_ptr[x];
ptr = row_ptr + lin_ptr[x];
*dst_ptr = *ptr;
dst_ptr++;
}