* [9fans] page(1)
@ 2009-02-21 1:03 Akshat Kumar
2009-02-21 1:09 ` erik quanstrom
2009-02-21 1:32 ` Russ Cox
0 siblings, 2 replies; 10+ messages in thread
From: Akshat Kumar @ 2009-02-21 1:03 UTC (permalink / raw)
To: 9fans
Lately, page has been having troubles displaying an increasing number
of PNG image files. I'm not sure whether this is due to any recent
changes or what... Even a PNG of /dev/screen taken with topng(1)
renders just the dreaded question-marks.
Any ideas what's going on here (as a simple test, you can first try
the screenshot on 9grid.es, which is a PNG, and also isn't rendered
by page(1) for me, then you can try taking your own snapshot with
topng(1))?
ak
^ permalink raw reply [flat|nested] 10+ messages in thread
* Re: [9fans] page(1)
2009-02-21 1:03 [9fans] page(1) Akshat Kumar
@ 2009-02-21 1:09 ` erik quanstrom
2009-02-21 1:32 ` Russ Cox
1 sibling, 0 replies; 10+ messages in thread
From: erik quanstrom @ 2009-02-21 1:09 UTC (permalink / raw)
To: 9fans
On Fri Feb 20 20:05:49 EST 2009, akumar@mail.nanosouffle.net wrote:
> Lately, page has been having troubles displaying an increasing number
> of PNG image files. I'm not sure whether this is due to any recent
> changes or what... Even a PNG of /dev/screen taken with topng(1)
> renders just the dreaded question-marks.
>
> Any ideas what's going on here (as a simple test, you can first try
> the screenshot on 9grid.es, which is a PNG, and also isn't rendered
> by page(1) for me, then you can try taking your own snapshot with
> topng(1))?
both of these work for me:
; hget http://9grid.es/screens/screen1.png|page
; hget http://9grid.es/screens/screen1.png|/n/sources/plan9/386/bin/page
- erik
^ permalink raw reply [flat|nested] 10+ messages in thread
* Re: [9fans] page(1)
2009-02-21 1:03 [9fans] page(1) Akshat Kumar
2009-02-21 1:09 ` erik quanstrom
@ 2009-02-21 1:32 ` Russ Cox
1 sibling, 0 replies; 10+ messages in thread
From: Russ Cox @ 2009-02-21 1:32 UTC (permalink / raw)
To: Fans of the OS Plan 9 from Bell Labs
On Fri, Feb 20, 2009 at 5:03 PM, Akshat Kumar
<akumar@mail.nanosouffle.net> wrote:
> Lately, page has been having troubles displaying an increasing number
> of PNG image files. I'm not sure whether this is due to any recent
> changes or what... Even a PNG of /dev/screen taken with topng(1)
> renders just the dreaded question-marks.
If they fail in page, do they work in png?
Do you happen to have another program
named "png" in your path before /bin/png?
Russ
^ permalink raw reply [flat|nested] 10+ messages in thread
* Re: [9fans] page(1)
@ 2009-02-21 1:28 Akshat Kumar
0 siblings, 0 replies; 10+ messages in thread
From: Akshat Kumar @ 2009-02-21 1:28 UTC (permalink / raw)
To: 9fans
[-- Attachment #1: Type: text/plain, Size: 194 bytes --]
Neither works for me.
term% hget http://9grid.es/screens/screen1.png|page
reading through graphics...
warning: couldn't read image: readimage: read count 32400 not 64800: screen id in use
[-- Attachment #2: Type: message/rfc822, Size: 3096 bytes --]
From: erik quanstrom <quanstro@quanstro.net>
To: 9fans@9fans.net
Subject: Re: [9fans] page(1)
Date: Fri, 20 Feb 2009 20:09:13 -0500
Message-ID: <e99dc1e9a20b12797e445ebe04f140b7@quanstro.net>
On Fri Feb 20 20:05:49 EST 2009, akumar@mail.nanosouffle.net wrote:
> Lately, page has been having troubles displaying an increasing number
> of PNG image files. I'm not sure whether this is due to any recent
> changes or what... Even a PNG of /dev/screen taken with topng(1)
> renders just the dreaded question-marks.
>
> Any ideas what's going on here (as a simple test, you can first try
> the screenshot on 9grid.es, which is a PNG, and also isn't rendered
> by page(1) for me, then you can try taking your own snapshot with
> topng(1))?
both of these work for me:
; hget http://9grid.es/screens/screen1.png|page
; hget http://9grid.es/screens/screen1.png|/n/sources/plan9/386/bin/page
- erik
^ permalink raw reply [flat|nested] 10+ messages in thread
* Re: [9fans] page(1)
@ 2009-02-21 1:40 Akshat Kumar
0 siblings, 0 replies; 10+ messages in thread
From: Akshat Kumar @ 2009-02-21 1:40 UTC (permalink / raw)
To: 9fans
[-- Attachment #1: Type: text/plain, Size: 423 bytes --]
No, they don't work in png(1) either:
term% hget http://9grid.es/screens/screen1.png|png
png: loadimage <stdin> of 2430000 bytes failed: loadimage: insufficient data
term% png n/dump/usr/akumar/plan9/screens/nihongonokawa.png
png: loadimage n/dump/usr/akumar/plan9/screens/nihongonokawa.png of 1310720 bytes failed: loadimage: insufficient data
(the latter is a snapshot of /dev/screen taken with topng(1))
ak
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From: Russ Cox <rsc@swtch.com>
To: Fans of the OS Plan 9 from Bell Labs <9fans@9fans.net>
Subject: Re: [9fans] page(1)
Date: Fri, 20 Feb 2009 17:32:52 -0800
Message-ID: <dd6fe68a0902201732i12e4e4d3xf83c5966612dd4a4@mail.gmail.com>
On Fri, Feb 20, 2009 at 5:03 PM, Akshat Kumar
<akumar@mail.nanosouffle.net> wrote:
> Lately, page has been having troubles displaying an increasing number
> of PNG image files. I'm not sure whether this is due to any recent
> changes or what... Even a PNG of /dev/screen taken with topng(1)
> renders just the dreaded question-marks.
If they fail in page, do they work in png?
Do you happen to have another program
named "png" in your path before /bin/png?
Russ
^ permalink raw reply [flat|nested] 10+ messages in thread
* Re: [9fans] page(1)
@ 2009-02-21 1:49 erik quanstrom
2009-02-21 3:38 ` Federico G. Benavento
0 siblings, 1 reply; 10+ messages in thread
From: erik quanstrom @ 2009-02-21 1:49 UTC (permalink / raw)
To: akumar, 9fans
On Fri Feb 20 20:29:55 EST 2009, akumar@mail.nanosouffle.net wrote:
> Neither works for me.
>
> term% hget http://9grid.es/screens/screen1.png|page
> reading through graphics...
> warning: couldn't read image: readimage: read count 32400 not 64800: screen id in use
>
you should also try running png directly from sources.
assuming that this does not work, ...
it seems that here:
/sys/src/libdraw/readimage.c:103
m = readn(fd, tmp, n);
if(m != n){
>>> werrstr("readimage: read count %d not %d: %r", m, n);
Err:
if(dolock)
lockdisplay(d);
things are getting confused. i think it would
be easier to debug if you added
werrstr("");
right before the readn() and recompiled png.
i can't quite see how that error message could
result from reading an image.
- erik
^ permalink raw reply [flat|nested] 10+ messages in thread
* Re: [9fans] page(1)
2009-02-21 1:49 erik quanstrom
@ 2009-02-21 3:38 ` Federico G. Benavento
0 siblings, 0 replies; 10+ messages in thread
From: Federico G. Benavento @ 2009-02-21 3:38 UTC (permalink / raw)
To: Fans of the OS Plan 9 from Bell Labs
hola,
I haven't had the time to debug it, but readpng() changed
in the last days and it doesn't work correctly anymore.
I jdid yesterday -c /386/bin/png and everything went
back to normal.
On Fri, Feb 20, 2009 at 10:49 PM, erik quanstrom <quanstro@quanstro.net> wrote:
> On Fri Feb 20 20:29:55 EST 2009, akumar@mail.nanosouffle.net wrote:
>
>> Neither works for me.
>>
>> term% hget http://9grid.es/screens/screen1.png|page
>> reading through graphics...
>> warning: couldn't read image: readimage: read count 32400 not 64800: screen id in use
>>
>
> you should also try running png directly from sources.
> assuming that this does not work, ...
>
> it seems that here:
> /sys/src/libdraw/readimage.c:103
>
> m = readn(fd, tmp, n);
> if(m != n){
>>>> werrstr("readimage: read count %d not %d: %r", m, n);
> Err:
> if(dolock)
> lockdisplay(d);
>
> things are getting confused. i think it would
> be easier to debug if you added
>
> werrstr("");
>
> right before the readn() and recompiled png.
> i can't quite see how that error message could
> result from reading an image.
>
> - erik
>
>
--
Federico G. Benavento
^ permalink raw reply [flat|nested] 10+ messages in thread
* Re: [9fans] page(1)
@ 2009-02-23 20:15 Akshat Kumar
2009-02-23 20:18 ` erik quanstrom
0 siblings, 1 reply; 10+ messages in thread
From: Akshat Kumar @ 2009-02-23 20:15 UTC (permalink / raw)
To: 9fans
[-- Attachment #1: Type: text/plain, Size: 186 bytes --]
If you get to debugging it, that'd be great. For everyone else, the
still useful png is in /n/sourcesdump/2009/0201/plan9/386/bin/png.
Everything works fine now, thanks FGB.
ak
[-- Attachment #2: Type: message/rfc822, Size: 4012 bytes --]
From: "Federico G. Benavento" <benavento@gmail.com>
To: Fans of the OS Plan 9 from Bell Labs <9fans@9fans.net>
Subject: Re: [9fans] page(1)
Date: Sat, 21 Feb 2009 00:38:27 -0300
Message-ID: <32d987d50902201938l5969aa5w3d97fb323a42f8f3@mail.gmail.com>
hola,
I haven't had the time to debug it, but readpng() changed
in the last days and it doesn't work correctly anymore.
I jdid yesterday -c /386/bin/png and everything went
back to normal.
On Fri, Feb 20, 2009 at 10:49 PM, erik quanstrom <quanstro@quanstro.net> wrote:
> On Fri Feb 20 20:29:55 EST 2009, akumar@mail.nanosouffle.net wrote:
>
>> Neither works for me.
>>
>> term% hget http://9grid.es/screens/screen1.png|page
>> reading through graphics...
>> warning: couldn't read image: readimage: read count 32400 not 64800: screen id in use
>>
>
> you should also try running png directly from sources.
> assuming that this does not work, ...
>
> it seems that here:
> /sys/src/libdraw/readimage.c:103
>
> m = readn(fd, tmp, n);
> if(m != n){
>>>> werrstr("readimage: read count %d not %d: %r", m, n);
> Err:
> if(dolock)
> lockdisplay(d);
>
> things are getting confused. i think it would
> be easier to debug if you added
>
> werrstr("");
>
> right before the readn() and recompiled png.
> i can't quite see how that error message could
> result from reading an image.
>
> - erik
>
>
--
Federico G. Benavento
^ permalink raw reply [flat|nested] 10+ messages in thread
* Re: [9fans] page(1)
2009-02-23 20:15 Akshat Kumar
@ 2009-02-23 20:18 ` erik quanstrom
2009-02-24 0:06 ` geoff
0 siblings, 1 reply; 10+ messages in thread
From: erik quanstrom @ 2009-02-23 20:18 UTC (permalink / raw)
To: 9fans
On Mon Feb 23 15:16:16 EST 2009, akumar@mail.nanosouffle.net wrote:
> If you get to debugging it, that'd be great. For everyone else, the
> still useful png is in /n/sourcesdump/2009/0201/plan9/386/bin/png.
> Everything works fine now, thanks FGB.
i did see that the changes to png.c didn't make any difference.
the changes to readpng do. there's a lot of changes to readpng,
so i didn't chase that thread.
- erik
^ permalink raw reply [flat|nested] 10+ messages in thread
end of thread, other threads:[~2009-02-24 0:06 UTC | newest]
Thread overview: 10+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2009-02-21 1:03 [9fans] page(1) Akshat Kumar
2009-02-21 1:09 ` erik quanstrom
2009-02-21 1:32 ` Russ Cox
2009-02-21 1:28 Akshat Kumar
2009-02-21 1:40 Akshat Kumar
2009-02-21 1:49 erik quanstrom
2009-02-21 3:38 ` Federico G. Benavento
2009-02-23 20:15 Akshat Kumar
2009-02-23 20:18 ` erik quanstrom
2009-02-24 0:06 ` geoff
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