kimcinoo pushed a commit to branch master.
http://git.enlightenment.org/core/efl.git/commit/?id=431d62d095761eb82236a2e4d65fd62a90bf72c6
commit 431d62d095761eb82236a2e4d65fd62a90bf72c6
Author: Shinwoo Kim <cinoo....@samsung.com>
Date: Mon Oct 14 11:13:15 2019 +0900
evas filter: Implement grayscale filter in SW
Summary: Initial version implementing grayscale filter in SW.
Test Plan:
1. Create filter_example with following.
efl_gfx_filter_program_set(image, "grayscale ()", "grayscale");
1. Run.
./filter_example
Reviewers: Hermet, jsuya
Reviewed By: Hermet
Subscribers: cedric, #reviewers, #committers
Tags: #efl
Differential Revision: https://phab.enlightenment.org/D10219
---
src/lib/evas/software_generic/filters/meson.build | 1 +
.../evas/engines/software_generic/evas_engine.c | 1 +
.../software_generic/filters/evas_engine_filter.h | 1 +
.../filters/evas_filter_grayscale.c | 62 ++++++++++++++++++++++
4 files changed, 65 insertions(+)
diff --git a/src/lib/evas/software_generic/filters/meson.build
b/src/lib/evas/software_generic/filters/meson.build
index b23ce09b1d..17c7bce8c2 100644
--- a/src/lib/evas/software_generic/filters/meson.build
+++ b/src/lib/evas/software_generic/filters/meson.build
@@ -10,6 +10,7 @@ raw_evas_src = [
'evas_filter_fill.c',
'evas_filter_mask.c',
'evas_filter_transform.c',
+ 'evas_filter_grayscale.c',
]
foreach file : raw_evas_src
diff --git a/src/modules/evas/engines/software_generic/evas_engine.c
b/src/modules/evas/engines/software_generic/evas_engine.c
index 0dc6c64b52..085f053b1d 100644
--- a/src/modules/evas/engines/software_generic/evas_engine.c
+++ b/src/modules/evas/engines/software_generic/evas_engine.c
@@ -4544,6 +4544,7 @@ _gfx_filter_func_get(Evas_Filter_Command *cmd)
case EVAS_FILTER_MODE_FILL: func = eng_filter_fill_func_get(cmd); break;
case EVAS_FILTER_MODE_MASK: func = eng_filter_mask_func_get(cmd); break;
case EVAS_FILTER_MODE_TRANSFORM: func =
eng_filter_transform_func_get(cmd); break;
+ case EVAS_FILTER_MODE_GRAYSCALE: func =
eng_filter_grayscale_func_get(cmd); break;
default: return NULL;
}
diff --git
a/src/modules/evas/engines/software_generic/filters/evas_engine_filter.h
b/src/modules/evas/engines/software_generic/filters/evas_engine_filter.h
index f8bfebdc11..33998f9344 100644
--- a/src/modules/evas/engines/software_generic/filters/evas_engine_filter.h
+++ b/src/modules/evas/engines/software_generic/filters/evas_engine_filter.h
@@ -13,5 +13,6 @@ Software_Filter_Func
eng_filter_displace_func_get(Evas_Filter_Command *cmd);
Software_Filter_Func eng_filter_fill_func_get(Evas_Filter_Command *cmd);
Software_Filter_Func eng_filter_mask_func_get(Evas_Filter_Command *cmd);
Software_Filter_Func eng_filter_transform_func_get(Evas_Filter_Command *cmd);
+Software_Filter_Func eng_filter_grayscale_func_get(Evas_Filter_Command *cmd);
#endif // EVAS_ENGINE_FILTER_H
diff --git
a/src/modules/evas/engines/software_generic/filters/evas_filter_grayscale.c
b/src/modules/evas/engines/software_generic/filters/evas_filter_grayscale.c
new file mode 100644
index 0000000000..9384639916
--- /dev/null
+++ b/src/modules/evas/engines/software_generic/filters/evas_filter_grayscale.c
@@ -0,0 +1,62 @@
+#include "evas_engine_filter.h"
+
+static Eina_Bool
+_evas_filter_grayscale(Evas_Filter_Command *cmd)
+{
+ int sw, sh, dw, dh, x, y, slen, dlen;
+ unsigned int src_len, src_stride, dst_len, dst_stride;
+ Eina_Bool ret = EINA_FALSE;
+ DATA32 *ts, *td, *src = NULL, *dst = NULL;
+ DATA8 r, g, b, gry;
+
+ ector_buffer_size_get(cmd->input->buffer, &sw, &sh);
+ EINA_SAFETY_ON_FALSE_RETURN_VAL((sw > 0) && (sh > 0), ret);
+
+ ector_buffer_size_get(cmd->output->buffer, &dw, &dh);
+ EINA_SAFETY_ON_FALSE_RETURN_VAL((dw > 0) && (dh > 0), ret);
+
+ src = _buffer_map_all(cmd->input->buffer, &src_len, E_READ, E_ARGB,
&src_stride);
+ EINA_SAFETY_ON_FALSE_GOTO(src, end);
+
+ dst = _buffer_map_all(cmd->output->buffer, &dst_len, E_WRITE, E_ARGB,
&dst_stride);
+ EINA_SAFETY_ON_FALSE_GOTO(dst, end);
+
+ slen = src_stride / sizeof(*src);
+ dlen = dst_stride / sizeof(*dst);
+
+ ts = src;
+ td = dst;
+ for (y = 0; y < sh ; y++)
+ {
+ for (x = 0; x < sw; x++)
+ {
+ A_VAL(td + x) = A_VAL(ts + x);
+ r = R_VAL(ts + x);
+ g = G_VAL(ts + x);
+ b = B_VAL(ts + x);
+
+ /* formula from evas_common_convert_rgba_to_8bpp_gry_256_dith */
+ gry = ((r * 19596) + (g * 38470) + (b * 7472)) >> 16;
+ R_VAL(td + x) = G_VAL(td + x) = B_VAL(td + x) = gry;
+ }
+ ts += slen;
+ td += dlen;
+ }
+
+ ret = EINA_TRUE;
+
+end:
+ if (src) ector_buffer_unmap(cmd->input->buffer, src, src_len);
+ if (dst) ector_buffer_unmap(cmd->output->buffer, dst, dst_len);
+ return ret;
+}
+
+Software_Filter_Func
+eng_filter_grayscale_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);
+
+ return _evas_filter_grayscale;
+}
--
