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List:       graphicsmagick-commit
Subject:    [GM-commit] GraphicsMagick: coders/bmp.c Enforce default matte for 40 byte ...
From:       GraphicsMagick Commits <graphicsmagick-commit () lists ! sourceforge ! net>
Date:       2023-08-17 0:06:55
Message-ID: mailman.9635.1692230825.1374.graphicsmagick-commit () lists ! sourceforge ! net
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changeset 7af1b1f1d506 in /hg/GraphicsMagick
details: http://hg.GraphicsMagick.org/hg/GraphicsMagick?cmd=changeset;node=7af1b1f1d506
summary: coders/bmp.c  Enforce default matte for 40 byte BMP header & 32bpp.

diffstat:

 ChangeLog    |  4 ++++
 coders/bmp.c |  3 ++-
 2 files changed, 6 insertions(+), 1 deletions(-)

diffs (24 lines):

diff -r 15a0fc19fa0c -r 7af1b1f1d506 ChangeLog
--- a/ChangeLog	Wed Aug 16 17:52:06 2023 -0500
+++ b/ChangeLog	Thu Aug 17 02:06:31 2023 +0200
@@ -1,3 +1,7 @@
+2023-08-17  Fojtik Jaroslav  <JaFojtik@yandex.com>
+
+	* coders/bmp.c  Enforce default matte for 40 byte header & 32bpp.
+
 2023-08-16  Bob Friesenhahn  <bfriesen@simple.dallas.tx.us>
 
 	* coders/tiff.c (ReadTIFFImage): For common formats with the
diff -r 15a0fc19fa0c -r 7af1b1f1d506 coders/bmp.c
--- a/coders/bmp.c	Wed Aug 16 17:52:06 2023 -0500
+++ b/coders/bmp.c	Thu Aug 17 02:06:31 2023 +0200
@@ -1287,7 +1287,8 @@
                 }
               if ( bmp_info.bits_per_pixel == 32)
                 {
-                  bmp_info.alpha_mask=(image->matte ? 0xff000000U : 0U);
+                  image->matte = 1;
+                  bmp_info.alpha_mask=0xff000000U;
                   bmp_info.red_mask=0x00ff0000U;
                   bmp_info.green_mask=0x0000ff00U;
                   bmp_info.blue_mask=0x000000ffU;


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