From: glennrp <glennrp@git.imagemagick.org>
Date: Fri, 2 Mar 2012 15:18:14 +0000 (+0000)
Subject: Make non-ping identify report DirectClass for transparent PNGs, as does
X-Git-Tag: 7.0.1-0~6097
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=1b888c4e54e47ba7659d081d3c2d72dfb2d09bac;p=imagemagick

Make non-ping identify report DirectClass for transparent PNGs, as does

identify -verbose.
---

diff --git a/coders/png.c b/coders/png.c
index cd383a588..66279362d 100644
--- a/coders/png.c
+++ b/coders/png.c
@@ -2809,6 +2809,10 @@ static Image *ReadOnePNGImage(MngInfo *mng_info,
       (image_info->number_scenes != 0) && (mng_info->scenes_found > (ssize_t)
       (image_info->first_scene+image_info->number_scenes))))
     {
+      /* This happens later in non-ping decodes */
+      if (png_get_valid(ping,ping_info,PNG_INFO_tRNS))
+        image->storage_class=DirectClass;
+
       if (logging != MagickFalse)
         (void) LogMagickEvent(CoderEvent,GetMagickModule(),
           "    Skipping PNG image data for scene %.20g",(double)