forked from enlightenment/efl
Evas filters: Implement blend functions
Currently, blending supports the following: - Alpha --> Alpha (simple alpha masking) - Alpha + Color --> RGBA (same as mask) - RGBA --> RGBA (normal blend) - RGBA --> Alpha (desaturate using A=(R+G+B)/3)
This commit is contained in:
Jean-Philippe Andre
parent
af106ffc81
commit
3f0f703f50
|
|
@ -0,0 +1,227 @@
|
|||
#include "evas_filter.h"
|
||||
#include "evas_filter_private.h"
|
||||
#include "evas_blend_private.h"
|
||||
|
||||
#if DIV_USING_BITSHIFT
|
||||
static int
|
||||
_smallest_pow2_larger_than(int val)
|
||||
{
|
||||
int n;
|
||||
|
||||
for (n = 0; n < 32; n++)
|
||||
if (val <= (1 << n)) return n;
|
||||
|
||||
ERR("Value %d is too damn high!", val);
|
||||
return 32;
|
||||
}
|
||||
# define DEFINE_DIVIDER(div) const int pow2 = _smallest_pow2_larger_than((div) << 10); const int numerator = (1 << pow2) / (div);
|
||||
# define DIVIDE(val) (((val) * numerator) >> pow2)
|
||||
#else
|
||||
# define DEFINE_DIAMETER(div) const int divider = (div);
|
||||
# define DIVIDE(val) ((val) / divider)
|
||||
#endif
|
||||
|
||||
static Eina_Bool
|
||||
_filter_blend_cpu_alpha(Evas_Filter_Command *cmd)
|
||||
{
|
||||
RGBA_Image *in, *out;
|
||||
Alpha_Gfx_Func func;
|
||||
DATA8 *maskdata, *dstdata;
|
||||
int sw, sh, dw, dh, ox, oy, sx = 0, sy = 0, dx = 0, dy = 0, rows, cols, y;
|
||||
|
||||
func = evas_common_alpha_func_get(cmd->draw.render_op);
|
||||
if (!func)
|
||||
return EINA_FALSE;
|
||||
|
||||
if (!evas_filter_buffer_alloc(cmd->output, cmd->output->w, cmd->output->h))
|
||||
return EINA_FALSE;
|
||||
|
||||
in = cmd->input->backing;
|
||||
out = cmd->output->backing;
|
||||
sw = in->cache_entry.w;
|
||||
sh = in->cache_entry.h;
|
||||
dw = out->cache_entry.w;
|
||||
dh = out->cache_entry.h;
|
||||
ox = cmd->draw.ox;
|
||||
oy = cmd->draw.oy;
|
||||
maskdata = in->mask.data;
|
||||
dstdata = out->mask.data;
|
||||
|
||||
if (!ox && !oy && (dw == sw) && (dh == sh))
|
||||
{
|
||||
func(maskdata, dstdata, sw * sh);
|
||||
return EINA_TRUE;
|
||||
}
|
||||
|
||||
_clip_to_target(&sx, &sy, sw, sh, ox, oy, dw, dh, &dx, &dy, &rows, &cols);
|
||||
|
||||
if (cols <= 0 || rows <= 0)
|
||||
return EINA_TRUE;
|
||||
|
||||
maskdata += sy * sw;
|
||||
dstdata += dy * dw;
|
||||
for (y = rows; y; y--)
|
||||
{
|
||||
func(maskdata + sx, dstdata + dx, cols);
|
||||
maskdata += sw;
|
||||
dstdata += dw;
|
||||
}
|
||||
|
||||
return EINA_TRUE;
|
||||
}
|
||||
|
||||
static Eina_Bool
|
||||
_filter_blend_cpu_rgba(Evas_Filter_Command *cmd)
|
||||
{
|
||||
RGBA_Image *in, *out;
|
||||
RGBA_Draw_Context *drawctx;
|
||||
int w, h;
|
||||
|
||||
if (!evas_filter_buffer_alloc(cmd->output, cmd->output->w, cmd->output->h))
|
||||
return EINA_FALSE;
|
||||
|
||||
in = cmd->input->backing;
|
||||
out = cmd->output->backing;
|
||||
EINA_SAFETY_ON_NULL_RETURN_VAL(in, EINA_FALSE);
|
||||
EINA_SAFETY_ON_NULL_RETURN_VAL(out, EINA_FALSE);
|
||||
w = in->cache_entry.w;
|
||||
h = in->cache_entry.h;
|
||||
|
||||
drawctx = cmd->ENFN->context_new(cmd->ENDT);
|
||||
cmd->ENFN->context_color_set(cmd->ENDT, drawctx, cmd->draw.R, cmd->draw.G,
|
||||
cmd->draw.B, cmd->draw.A);
|
||||
cmd->ENFN->context_render_op_set(cmd->ENDT, drawctx, cmd->draw.render_op);
|
||||
|
||||
cmd->ENFN->image_draw(cmd->ENDT, drawctx, out, in,
|
||||
0, 0, w, h, // src
|
||||
cmd->draw.ox, cmd->draw.oy, w, h, // dst
|
||||
EINA_FALSE, // smooth
|
||||
EINA_FALSE); // Not async
|
||||
|
||||
cmd->ENFN->context_free(cmd->ENDT, drawctx);
|
||||
|
||||
return EINA_TRUE;
|
||||
}
|
||||
|
||||
static Eina_Bool
|
||||
_filter_blend_cpu_mask_rgba(Evas_Filter_Command *cmd)
|
||||
{
|
||||
RGBA_Image *in, *out;
|
||||
RGBA_Gfx_Func func;
|
||||
DATA32 col;
|
||||
DATA32 *dstdata;
|
||||
DATA8 *maskdata;
|
||||
int sw, sh, dw, dh, ox, oy, sx = 0, sy = 0, dx = 0, dy = 0, rows, cols, y;
|
||||
|
||||
if (!evas_filter_buffer_alloc(cmd->output, cmd->output->w, cmd->output->h))
|
||||
return EINA_FALSE;
|
||||
|
||||
in = cmd->input->backing;
|
||||
out = cmd->output->backing;
|
||||
sw = in->cache_entry.w;
|
||||
sh = in->cache_entry.h;
|
||||
dw = out->cache_entry.w;
|
||||
dh = out->cache_entry.h;
|
||||
ox = cmd->draw.ox;
|
||||
oy = cmd->draw.oy;
|
||||
dstdata = out->image.data;
|
||||
maskdata = in->mask.data;
|
||||
col = ARGB_JOIN(cmd->draw.A, cmd->draw.R, cmd->draw.G, cmd->draw.B);
|
||||
|
||||
func = evas_common_gfx_func_composite_mask_color_span_get
|
||||
(col, out, 1, cmd->draw.render_op);
|
||||
|
||||
if (!func)
|
||||
return EINA_FALSE;
|
||||
|
||||
if (!ox && !oy && (dw == sw) && (dh == sh))
|
||||
{
|
||||
func(NULL, maskdata, col, dstdata, sw * sh);
|
||||
return EINA_TRUE;
|
||||
}
|
||||
|
||||
_clip_to_target(&sx, &sy, sw, sh, ox, oy, dw, dh, &dx, &dy, &rows, &cols);
|
||||
|
||||
if (cols <= 0 || rows <= 0)
|
||||
return EINA_TRUE;
|
||||
|
||||
maskdata += sy * sw;
|
||||
dstdata += dy * dw;
|
||||
for (y = rows; y; y--)
|
||||
{
|
||||
func(NULL, maskdata + sx, col, dstdata + dx, cols);
|
||||
maskdata += sw;
|
||||
dstdata += dw;
|
||||
}
|
||||
|
||||
return EINA_TRUE;
|
||||
}
|
||||
|
||||
static Eina_Bool
|
||||
_filter_blend_cpu_rgba2alpha(Evas_Filter_Command *cmd)
|
||||
{
|
||||
RGBA_Image *in, *out;
|
||||
DATA8 *dstdata;
|
||||
DATA32 *srcdata;
|
||||
int sw, sh, dw, dh, ox, oy, sx = 0, sy = 0, dx = 0, dy = 0, rows, cols, y, x;
|
||||
DEFINE_DIVIDER(3);
|
||||
|
||||
if (!evas_filter_buffer_alloc(cmd->output, cmd->output->w, cmd->output->h))
|
||||
return EINA_FALSE;
|
||||
|
||||
in = cmd->input->backing;
|
||||
out = cmd->output->backing;
|
||||
sw = in->cache_entry.w;
|
||||
sh = in->cache_entry.h;
|
||||
dw = out->cache_entry.w;
|
||||
dh = out->cache_entry.h;
|
||||
ox = cmd->draw.ox;
|
||||
oy = cmd->draw.oy;
|
||||
srcdata = in->image.data;
|
||||
dstdata = out->mask.data;
|
||||
|
||||
_clip_to_target(&sx, &sy, sw, sh, ox, oy, dw, dh, &dx, &dy, &rows, &cols);
|
||||
|
||||
if (cols <= 0 || rows <= 0)
|
||||
return EINA_TRUE;
|
||||
|
||||
srcdata += sy * sw;
|
||||
dstdata += dy * dw;
|
||||
for (y = rows; y; y--)
|
||||
{
|
||||
DATA32 *s = srcdata + sx;
|
||||
DATA8 *d = dstdata + dx;
|
||||
for (x = cols; x; x--, d++, s++)
|
||||
{
|
||||
// TODO: Add weights?
|
||||
*d = DIVIDE(R_VAL(s) + G_VAL(s) + B_VAL(s));
|
||||
}
|
||||
srcdata += sw;
|
||||
dstdata += dw;
|
||||
}
|
||||
|
||||
return EINA_TRUE;
|
||||
}
|
||||
|
||||
Evas_Filter_Apply_Func
|
||||
evas_filter_blend_cpu_func_get(Evas_Filter_Command *cmd)
|
||||
{
|
||||
EINA_SAFETY_ON_NULL_RETURN_VAL(cmd, NULL);
|
||||
EINA_SAFETY_ON_NULL_RETURN_VAL(cmd->output, NULL);
|
||||
EINA_SAFETY_ON_NULL_RETURN_VAL(cmd->input, NULL);
|
||||
|
||||
if (cmd->input->alpha_only)
|
||||
{
|
||||
if (cmd->output->alpha_only)
|
||||
return _filter_blend_cpu_alpha;
|
||||
else
|
||||
return _filter_blend_cpu_mask_rgba;
|
||||
}
|
||||
else
|
||||
{
|
||||
if (cmd->output->alpha_only)
|
||||
return _filter_blend_cpu_rgba2alpha;
|
||||
else
|
||||
return _filter_blend_cpu_rgba;
|
||||
}
|
||||
}
|
||||
Loading…
Reference in New Issue