Summary: .9.png is not 9 patch file, but a png file which name is .9
Test Plan: evas_object_image_file_set(image, "./.9.png", NULL);
Reviewers: Hermet, jsuya, herb
Reviewed By: Hermet
Subscribers: cedric, #reviewers, #committers
Tags: #efl
Differential Revision: https://phab.enlightenment.org/D11848
Summary:
There was a mistake caused by "2a0eeba evas: fix png regression issue".
The flag is_for_data was close_file before this commit.
_evas_image_load_file_internal_head_png closes file if it is called only for
header. So the close_file does not mean is_for_data.
This patch is changing is_for_data to is_for_head, and make
_evas_image_load_file_internal_head_png use EINA_FILE_SEQUENTIAL
for data decoding.
Reviewers: Hermet, jsuya, herb, raster
Reviewed By: raster
Subscribers: cedric, #reviewers, #committers
Tags: #efl
Differential Revision: https://phab.enlightenment.org/D11783
Summary:
Accidentally commit "382c580 evas: add support for .9.png file to PNG loader."
adding the 9 patch feature with small code refactoring made use of setjmp
incorrectly.
[Problem]
evas_image_load_file_data_png calls _evas_image_load_file_internal_head_png,
and _evas_image_load_file_internal_head_png calls setjmp and returns without
problem. And png_read_row calls longjmp. This causes jumping into a function
which was exited. Problematic png file will be attached.
[Solution]
Save calling environment i.e. call setjmp, after returning from
_evas_image_load_file_internal_head_png.
Test Plan:
Problematic png file
{F3876983}
And example code.
{F3876986}
Reviewers: Hermet, jsuya, herb
Reviewed By: Hermet
Subscribers: cedric, #reviewers, #committers
Tags: #efl
Differential Revision: https://phab.enlightenment.org/D11782
Accidentally commit "382c580 evas: add support for .9.png file to PNG loader."
adding the 9 patch feature with small code refactoring missed a line calling
eina_file_map_all taking EINA_FILE_SEQUENTIAL for data decoding.
You can see the previous change adding the line from the following commit.
e60baa0 evas: change mapping policy to be less agressive into loading file
in memory.
This is a response to the request of @cedric on D9580
Reviewed-by: Cedric BAIL <cedric.bail@free.fr>
Differential Revision: https://phab.enlightenment.org/D9614
Summary:
The evas_image_load_file_data_png had called png_set_tRNS_to_alpha
from following commit.
6988a38 evas: fix png loader to actually produce lower resolution
content when asked.
You could refer to following information regarding png_set_tRNS_to_alpha
which is available on page http://www.libpng.org/pub/png/libpng-manual.txt
The following code transforms grayscale images of less than 8 to 8 bits,
changes paletted images to RGB, and adds a full alpha channel if there is
transparency information in a tRNS chunk. This is most useful on
grayscale images with bit depths of 2 or 4 or if there is a multiple-image
viewing application that wishes to treat all images in the same way.
if (color_type == PNG_COLOR_TYPE_PALETTE)
png_set_palette_to_rgb(png_ptr);
if (png_get_valid(png_ptr, info_ptr,
PNG_INFO_tRNS)) png_set_tRNS_to_alpha(png_ptr);
if (color_type == PNG_COLOR_TYPE_GRAY &&
bit_depth < 8) png_set_expand_gray_1_2_4_to_8(png_ptr)
Accidentally commit "382c580 evas: add support for .9.png file to PNG loader."
adding a new feature with small code refactoring missed the line calling
png_set_tRNS_to_alpha.
So we got a rendering issue. It made around 75% size white rectangle
using a grayscale and transparent image. I'd like to attach the image
which has following type information for test purpose.
$ identify -verbose ./grayscale_transparent.png | grep type -i
Mime type: image/png
Type: Bilevel
png:IHDR.color-type-orig: 0
png:IHDR.color_type: 0 (Grayscale)
Test Plan:
This is the sample image file grayscale_transparent.png
{F3748665}
Reviewers: cedric, Hermet, jsuya
Reviewed By: Hermet
Subscribers: #reviewers, #committers
Tags: #efl
Differential Revision: https://phab.enlightenment.org/D9580
This support Android 9 patch file format. Only black is a recognized color for both
the stretch area and the content area. All other color are associated with being
"white".
Reviewed-by: Hermet Park <hermetpark@gmail.com>
Differential Revision: https://phab.enlightenment.org/D9103
Summary:
This patch improves png quality when image uses scale-down at image loading.
Since current scale-down logic just works like point sampling,
image result could be wholely different,
Simply, if source data is consist of continous white and black pixels,
and scale down factor is 2, the sampled data would be only white,
and lose all black pixels, or vice versa.
The result can be unexpected by users.
Even current jpeg scale-down works with interpolation.
Before:
{F3711651}
After:
{F3711652}
Original:
{F3711653}
Reviewers: cedric, raster, #committers, kimcinoo, jsuya
Subscribers: cedric, #reviewers, #committers
Tags: #efl
Differential Revision: https://phab.enlightenment.org/D8788
Summary:
This patch improves png quality when image uses scale-down at image loading.
Since current scale-down logic just works like point sampling,
image result could be wholely different,
Simply, if source data is consist of continous white and black pixels,
and scale down factor is 2, the sampled data would be only white,
and lose all black pixels, or vice versa.
The result can be unexpected by users.
Even current jpeg scale-down works with interpolation.
Before:
{F3711651}
After:
{F3711652}
Original:
{F3711653}
Reviewers: cedric, raster, #committers, kimcinoo, jsuya
Subscribers: cedric, #reviewers, #committers
Tags: #efl
Differential Revision: https://phab.enlightenment.org/D8788
Previously, mannual scale down logic was too primitive,
it copied pixel data each channels. Obviously, it's ineffective.
We know the general case - 4 bytes channel which is the most usage,
If loader copies data per four bytes, instructions could be reduced.
When I load scale-downed image(original 8k), about 0.02 secs was reduced by this.
to date if you use async preload we still load the header
synchronously and this can be horrible especially with generic
loaders. there is no way to farm this off to the preload thread. now
there is. youhave to set it as a skip head load option before doing a
file_set AND you need to issue a preload ... but now it's possible.
@feature
The previous commit exposed an issue with the region test
does not take into account the scale down factor.
Not a @fix in itself, as it depends on the previous patch.
Elyes HAOUAS
Shinwoo Kim
Carsten Haitzler
Boris Faure
Cedric BAIL
Vincent Torri
Hermet Park
Pawel Aksiutowicz
Jean-Philippe Andre
jiin.moon
Cedric BAIL
Bogdan Devichev