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Cannot output png to STDOUT if prefix is PNG48, PNG64 or PNG00 on Windows

https://imagemagick.com/discourse-server/viewtopic.php?t=28097

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Cannot output png to STDOUT if prefix is PNG48, PNG64 or PNG00 on Windows

Posted: 2015-07-26T06:03:43-07:00
by 246246

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c:\>set MAGICK_TMPDIR=C:/WINDOWS/TEMP

c:\>convert -version
Version: ImageMagick 6.9.1-10 Q16 x86 2015-07-25 http://www.imagemagick.org
Copyright: Copyright (C) 1999-2015 ImageMagick Studio LLC
License: http://www.imagemagick.org/script/license.php
Features: Cipher DPC HDRI Modules OpenMP
Delegates (built-in): bzlib cairo freetype jng jp2 jpeg lcms lqr openexr pangocairo png ps rsvg tiff webp xml zlib

c:\>convert rose: PNG:- | identify -quiet -
-=>C:/WINDOWS/TEMP/magick-7368uBkzxXLBcBZC PNG 70x46 70x46+0+0 8-bit sRGB 6.97KB 0.000u 0:00.002

c:\>convert rose: PNG8:- | identify -quiet -
-=>C:/WINDOWS/TEMP/magick-1560lOhfVRfBpUOF PNG 70x46 70x46+0+0 8-bit sRGB 113c 2.17KB 0.000u 0:00.003

c:\>convert rose: PNG24:- | identify -quiet -
-=>C:/WINDOWS/TEMP/magick-7312cg0RIMk4ko-c PNG 70x46 70x46+0+0 8-bit sRGB 6.97KB 0.000u 0:00.001

c:\>convert rose: PNG32:- | identify -quiet -
-=>C:/WINDOWS/TEMP/magick-81287gdAE8f9mxlN PNG 70x46 70x46+0+0 8-bit sRGB 7.96KB 0.000u 0:00.002

c:\>convert rose: PNG48:- | identify -quiet -
convert.exe: unable to open image `PNG48:-': Permission denied @ error/blob.c/OpenBlob/2695.
identify.exe: no decode delegate for this image format `' @ error/constitute.c/ReadImage/501.

c:\>convert rose: PNG64:- | identify -quiet -
convert.exe: unable to open image `PNG64:-': Permission denied @ error/blob.c/OpenBlob/2695.
identify.exe: no decode delegate for this image format `' @ error/constitute.c/ReadImage/501.

c:\>convert rose: PNG00:- | identify -quiet -
convert.exe: unable to open image `PNG00:-': Permission denied @ error/blob.c/OpenBlob/2695.
identify.exe: no decode delegate for this image format `' @ error/constitute.c/ReadImage/501.
I instaled ImageMagick to D:\Program Files\ImageMagick-6.9.1-Q16-HDRI from binary release file ImageMagick-6.9.1-10-Q16-HDRI-x86-dll.exe, and if I invoked the same command from D:\, one error from convert disappears, but still no output to STDOUT.

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c:\>cd /d d:/

d:\>convert rose: PNG48:- | identify -quiet -
identify.exe: no decode delegate for this image format `' @ error/constitute.c/ReadImage/501.
All works well if output is a file.

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C:\>convert rose: PNG48:tmp.png

C:\>identify tmp.png
tmp.png PNG 70x46 70x46+0+0 16-bit sRGB 12.1KB 0.000u 0:00.000
And it works on 6.1.9-3 on Cygwin.

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$ convert -version
Version: ImageMagick 6.9.1-3 Q16 i686 2015-06-21 http://www.imagemagick.org
Copyright: Copyright (C) 1999-2015 ImageMagick Studio LLC
License: http://www.imagemagick.org/script/license.php
Features: DPC OpenMP
Delegates (built-in): autotrace bzlib cairo fftw fontconfig freetype fpx gslib jbig jng jpeg lcms lzma pangocairo png ps rsvg tiff webp x xml zlib

$ convert rose: PNG48:- | identify -
-=>/tmp/magick-7108qVNjdMYJvCF0 PNG 70x46 70x46+0+0 16-bit sRGB 12.1KB 0.000u 0:00.003

$ convert rose: PNG64:- | identify -
-=>/tmp/magick-7776cq7NOy1RWsjA PNG 70x46 70x46+0+0 16-bit sRGB 12.5KB 0.016u 0:00.003

$ convert rose: PNG00:- | identify -
-=>/tmp/magick-7280fDJHIEdoySGf PNG 70x46 70x46+0+0 8-bit sRGB 6.97KB 0.000u 0:00.003
Is it a Windows specific problem or issue on newer version?

Best Wishes,

Re: Cannot output png to STDOUT if prefix is PNG48, PNG64 or PNG00 on Windows

Posted: 2015-07-26T07:20:48-07:00
by snibgo
Your tests pass on v6.9.1--6, Q16 integer, pre-built binary.

I suspect the bug was introduced in a later version. I don't have later versions.

As this seems to be a bug, I'll move it to the bugs forum.

Re: Cannot output png to STDOUT if prefix is PNG48, PNG64 or PNG00 on Windows

Posted: 2015-07-26T11:01:00-07:00
by glennrp
6.9.1-9 and 6.9.10 work for me. Note that the PNG00, PNG48, and PNG64 subformats were added at version 6.8.2-0, so I'd expect to see what you saw if running a version older than that.

Maybe there's something going on behind the scenes that causes "convert -version" to report the current version but the PNG decoder is coming from an older version. That is to say, you're picking up the current version.h but an older executable.

What does

Code: Select all

convert -list format | grep PNG
identify -list format | grep PNG
say? Are PNG00, PNG48, and PNG64 among the listed formats for both commands? I suppose they are, because you said that PNG48 worked for you when directing the output to a file.

Re: Cannot output png to STDOUT if prefix is PNG48, PNG64 or PNG00 on Windows

Posted: 2015-07-26T14:14:13-07:00
by dlemstra
This is not a Windows only bug but a 'Modules' only bug. Your Cygwin 6.9.1-3 version is statically linked instead of compiled with 'Modules' enabled. I will commit a fix for this tomorrow and this will work properly in the next version of ImageMagick (6.9.2-0)

Re: Cannot output png to STDOUT if prefix is PNG48, PNG64 or PNG00 on Windows

Posted: 2015-07-26T17:07:12-07:00
by 246246
I rechecked after newly installed to C:
glennrp wrote: What does

Code: Select all

convert -list format | grep PNG
identify -list format | grep PNG
say? Are PNG00, PNG48, and PNG64 among the listed formats for both commands? I suppose they are, because you said that PNG48 worked for you when directing the output to a file.
Yes, all are there.

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C:\>convert -list format | find "PNG"
      JNG* PNG       rw-   JPEG Network Graphics
      MNG* PNG       rw+   Multiple-image Network Graphics (libpng 1.6.17)
      PNG* PNG       rw-   Portable Network Graphics (libpng 1.6.17)
           See http://www.libpng.org/ for details about the PNG format.
    PNG00* PNG       rw-   PNG inheriting bit-depth, color-type from original if possible
    PNG24* PNG       rw-   opaque or binary transparent 24-bit RGB (zlib 1.2.8)
    PNG32* PNG       rw-   opaque or transparent 32-bit RGBA
    PNG48* PNG       rw-   opaque or binary transparent 48-bit RGB
    PNG64* PNG       rw-   opaque or transparent 64-bit RGBA
     PNG8* PNG       rw-   8-bit indexed with optional binary transparency

C:\>identify -list format | find "PNG"
      JNG* PNG       rw-   JPEG Network Graphics
      MNG* PNG       rw+   Multiple-image Network Graphics (libpng 1.6.17)
      PNG* PNG       rw-   Portable Network Graphics (libpng 1.6.17)
           See http://www.libpng.org/ for details about the PNG format.
    PNG00* PNG       rw-   PNG inheriting bit-depth, color-type from original if possible
    PNG24* PNG       rw-   opaque or binary transparent 24-bit RGB (zlib 1.2.8)
    PNG32* PNG       rw-   opaque or transparent 32-bit RGBA
    PNG48* PNG       rw-   opaque or binary transparent 48-bit RGB
    PNG64* PNG       rw-   opaque or transparent 64-bit RGBA
     PNG8* PNG       rw-   8-bit indexed with optional binary transparency
dlemstra wrote:This is not a Windows only bug but a 'Modules' only bug.
Seems to be exactly right. it searches IM_MOD_RL_PNG48_.dll

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C:\>(convert -debug "Module" rose: PNG48:- 1>NUL)2>&1
2015-07-27T10:21:24+09:00 0:00.007 0.000u 6.9.1 Module convert.exe[3368]: module.c/OpenModule/1268/Module
  Searching for module "MAGICK" using filename "IM_MOD_RL_MAGICK_.dll"
2015-07-27T10:21:24+09:00 0:00.018 0.000u 6.9.1 Module convert.exe[3368]: module.c/GetMagickModulePath/554/Module
  Searching for coder module file "IM_MOD_RL_MAGICK_.dll" ...
2015-07-27T10:21:24+09:00 0:00.027 0.000u 6.9.1 Module convert.exe[3368]: module.c/OpenModule/1277/Module
  Opening module at path "C:\Program Files\ImageMagick-6.9.1-Q16-HDRI\modules\coders\IM_MOD_RL_MAGICK_.dll"
2015-07-27T10:21:24+09:00 0:00.040 0.000u 6.9.1 Module convert.exe[3368]: module.c/OpenModule/1304/Module
  Method "RegisterMAGICKImage" in module "MAGICK" at address 6FB11110
2015-07-27T10:21:25+09:00 0:00.053 0.000u 6.9.1 Module convert.exe[3368]: module.c/OpenModule/1318/Module
  Method "UnregisterMAGICKImage" in module "MAGICK" at address 6FB112B0
2015-07-27T10:21:25+09:00 0:00.065 0.000u 6.9.1 Module convert.exe[3368]: module.c/OpenModule/1268/Module
  Searching for module "PNM" using filename "IM_MOD_RL_PNM_.dll"
2015-07-27T10:21:25+09:00 0:00.078 0.000u 6.9.1 Module convert.exe[3368]: module.c/GetMagickModulePath/554/Module
  Searching for coder module file "IM_MOD_RL_PNM_.dll" ...
2015-07-27T10:21:25+09:00 0:00.088 0.000u 6.9.1 Module convert.exe[3368]: module.c/OpenModule/1277/Module
  Opening module at path "C:\Program Files\ImageMagick-6.9.1-Q16-HDRI\modules\coders\IM_MOD_RL_PNM_.dll"
2015-07-27T10:21:25+09:00 0:00.100 0.000u 6.9.1 Module convert.exe[3368]: module.c/OpenModule/1304/Module
  Method "RegisterPNMImage" in module "PNM" at address 71713B40
2015-07-27T10:21:25+09:00 0:00.112 0.000u 6.9.1 Module convert.exe[3368]: module.c/OpenModule/1318/Module
  Method "UnregisterPNMImage" in module "PNM" at address 71713F70
2015-07-27T10:21:25+09:00 0:00.126 0.016u 6.9.1 Module convert.exe[3368]: module.c/OpenModule/1268/Module
  Searching for module "PNG48" using filename "IM_MOD_RL_PNG48_.dll"
2015-07-27T10:21:25+09:00 0:00.136 0.016u 6.9.1 Module convert.exe[3368]: module.c/GetMagickModulePath/554/Module
  Searching for coder module file "IM_MOD_RL_PNG48_.dll" ...
2015-07-27T10:21:25+09:00 0:00.158 0.031u 6.9.1 Module convert.exe[3368]: module.c/OpenModule/1268/Module
  Searching for module "PNG48" using filename "IM_MOD_RL_PNG48_.dll"
2015-07-27T10:21:25+09:00 0:00.169 0.031u 6.9.1 Module convert.exe[3368]: module.c/GetMagickModulePath/554/Module
  Searching for coder module file "IM_MOD_RL_PNG48_.dll" ...
2015-07-27T10:21:25+09:00 0:00.177 0.047u 6.9.1 Module convert.exe[3368]: module.c/OpenModule/1268/Module
  Searching for module "PNG48" using filename "IM_MOD_RL_PNG48_.dll"
2015-07-27T10:21:25+09:00 0:00.183 0.047u 6.9.1 Module convert.exe[3368]: module.c/GetMagickModulePath/554/Module
  Searching for coder module file "IM_MOD_RL_PNG48_.dll" ...
2015-07-27T10:21:25+09:00 0:00.195 0.047u 6.9.1 Module convert.exe[3368]: module.c/OpenModule/1268/Module
  Searching for module "PNG48" using filename "IM_MOD_RL_PNG48_.dll"
2015-07-27T10:21:25+09:00 0:00.201 0.047u 6.9.1 Module convert.exe[3368]: module.c/GetMagickModulePath/554/Module
  Searching for coder module file "IM_MOD_RL_PNG48_.dll" ...
2015-07-27T10:21:25+09:00 0:00.206 0.047u 6.9.1 Module convert.exe[3368]: module.c/OpenModule/1268/Module
  Searching for module "PNG48" using filename "IM_MOD_RL_PNG48_.dll"
2015-07-27T10:21:25+09:00 0:00.211 0.047u 6.9.1 Module convert.exe[3368]: module.c/GetMagickModulePath/554/Module
  Searching for coder module file "IM_MOD_RL_PNG48_.dll" ...
2015-07-27T10:21:25+09:00 0:00.216 0.047u 6.9.1 Module convert.exe[3368]: module.c/OpenModule/1268/Module
  Searching for module "PNG48" using filename "IM_MOD_RL_PNG48_.dll"
2015-07-27T10:21:25+09:00 0:00.221 0.047u 6.9.1 Module convert.exe[3368]: module.c/GetMagickModulePath/554/Module
  Searching for coder module file "IM_MOD_RL_PNG48_.dll" ...
Thank you for your fast reply.

Re: Cannot output png to STDOUT if prefix is PNG48, PNG64 or PNG00 on Windows

Posted: 2015-08-17T07:11:24-07:00
by 246246
Confirmed to work in 6.9.2-0 with pre-build dll version of Windows.
Thank you.
All times are UTC-07:00
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