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List: graphicsmagick-commit
Subject: [GM-commit] GraphicsMagick: coders/tga.c Block alpha channel depending on va...
From: GraphicsMagick Commits <graphicsmagick-commit () lists ! sourceforge ! net>
Date: 2022-10-12 22:45:46
Message-ID: mailman.3266.1665614755.1567.graphicsmagick-commit () lists ! sourceforge ! net
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changeset 0b468264d2e6 in /hg/GraphicsMagick
details: http://hg.GraphicsMagick.org/hg/GraphicsMagick?cmd=changeset;node=0b468264d2e6
summary: coders/tga.c Block alpha channel depending on value "AttributesType".
diffstat:
ChangeLog | 5 +++++
coders/tga.c | 20 ++++++++++++++------
2 files changed, 19 insertions(+), 6 deletions(-)
diffs (48 lines):
diff -r f398d85d6c1a -r 0b468264d2e6 ChangeLog
--- a/ChangeLog Wed Oct 12 11:02:52 2022 +0200
+++ b/ChangeLog Thu Oct 13 00:45:23 2022 +0200
@@ -1,3 +1,8 @@
+2022-10-13 Fojtik Jaroslav <JaFojtik@yandex.com>
+
+ * coders/tga.c Block alpha channel depending on value "AttributesType".
+
+
2022-10-12 Fojtik Jaroslav <JaFojtik@yandex.com>
* coders/tga.c New attributes "comment", "creator", "software", \
"TGA:file.JobName"
diff -r f398d85d6c1a -r 0b468264d2e6 coders/tga.c
--- a/coders/tga.c Wed Oct 12 11:02:52 2022 +0200
+++ b/coders/tga.c Thu Oct 13 00:45:23 2022 +0200
@@ -1,6 +1,6 @@
/*
% Copyright (C) 2003 - 2022 GraphicsMagick Group
-% Copyright (C) 2002 ImageMagick Studio
+% Copyright (C) 2002 - 2022 ImageMagick Studio
% Copyright 1991-1999 E. I. du Pont de Nemours and Company
%
% This program is covered by multiple licenses, which are described in
@@ -515,11 +515,19 @@
/*
Initialize image structure.
*/
- alpha_bits=(tga_info.attributes & 0x0FU);
- image->matte=((alpha_bits > 0) || (tga_info.bits_per_pixel == 32));
- image->columns=tga_info.width;
- image->rows=tga_info.height;
- if ((tga_info.image_type != TGAColormap) && (tga_info.image_type != \
TGARLEColormap)) + alpha_bits = (tga_info.attributes & 0x0FU);
+ image->matte = ((alpha_bits > 0) || (tga_info.bits_per_pixel == 32));
+ if(image->matte)
+ {
+ if(tga_footer.ExtensionOffset>3 && tga_devel.ExtensionSize >= 495) /* Valid \
footer and extended area. */ + { /* Please note that alpha channel could \
contain a garbage. */ + if(tga_devel.AttributesType<3 || \
tga_devel.AttributesType>4) + image->matte = MagickFalse; /* The \
attribute instruct NOT to use alpha channel. */ + }
+ }
+ image->columns = tga_info.width;
+ image->rows = tga_info.height;
+ if((tga_info.image_type != TGAColormap) && (tga_info.image_type != \
TGARLEColormap)) {
/*
TrueColor Quantum Depth
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