KPV: a PDF reader for Kindle, based on muPDF, GPLv3 - Page 9

dpavlin · 03-05-2012, 05:48 PM

Quote:

Originally Posted by hawhill

I guess one of the next things we really need is a settings menu :-)

Menu key seems like logical choice, but hacking code is also OK ;-)

Germanc · 03-05-2012, 11:06 PM

Quote:

Originally Posted by dave2008

Hawhill added optimization options for compiling in new version. So it is now much faster (about 10 times faster for one of my test file, 20s to 3s).

Hope the new version can solve your problem. :-)

Nice ! If it wasn't this late I would try to compile it myself. I'll be waiting for the new release ! (or, who knows, maybe tomorrow is the day to finally build a cross compiling toolchain :P)

dave2008 · 03-06-2012, 12:40 AM

Quote:

Originally Posted by Germanc

Nice ! If it wasn't this late I would try to compile it myself. I'll be waiting for the new release ! (or, who knows, maybe tomorrow is the day to finally build a cross compiling toolchain :P)

Then I suggest you build your own toolchian ;P I don't know when the new release will be out.

knc1 · 03-06-2012, 07:05 AM

Quote:

Originally Posted by Germanc

Nice ! If it wasn't this late I would try to compile it myself. I'll be waiting for the new release ! (or, who knows, maybe tomorrow is the day to finally build a cross compiling toolchain :P)

Or a native toolchain that runs under qemu (for various flavors of ARM):
http://landley.net/aboriginal/about.html

dpavlin · 03-06-2012, 10:52 AM

Quote:

Originally Posted by knc1

Or a native toolchain that runs under qemu (for various flavors of ARM):
http://landley.net/aboriginal/about.html

I did try to use Landley's compiler for Kindle, but I got error that kernel is too old. It was some time ago, so YMMV.

If you don't want to build toolchain, you can download pre-compiled toolchain from
https://www.mobileread.com/forums/sho...6&postcount=11
https://rapidshare.com/files/3271781...cc4.2.4.tar.gz

or from https://github.com/samsheff/Amazon-K...ross-Toolchain
FWIW, git clone is much faster than rapidshare download, and gcc is also a bit newer, 4.6.1 however, I have following problem with it:

Code:

./kpdfview.no-worky: /usr/lib/libstdc++.so.6: version `CXXABI_ARM_1.3.3' not found (required by ./kpdfview.no-worky)

knc1 · 03-06-2012, 11:20 AM

Quote:

Originally Posted by dpavlin

I did try to use Landley's compiler for Kindle, but I got error that kernel is too old. It was some time ago, so YMMV.

It should have been possible to configure for the older kernel headers. __should__

I don't think that the Kindle kernels are getting any newer, so that will need a HowTo (somewhere).

Support for i.MX* processors just started going into BuildRoot a couple of weeks ago. Not all of the Freescale processors (yet) nor def_configs (or qemu configs) for all of them (yet).
But that is a cross-compile build system, not a native compile build system.

Unlike many other projects, the repository head of BuildRoot is expected to work (not just the release tagged points), so it should 'just work' if you have to use 'head' to get Freescale support.

Also, BuildRoot is in active (daily) use for commercial production with a lot of attention to ARM from the professional users.

hawhill · 03-06-2012, 12:06 PM

True. But: it is directed at building a uClibc root. You can get glibc by using it's integration for crosstool-ng, but then you could have used crosstool-ng in the first place. This is what I did. However, I decided to be close to the Amazon dev environment and carefully selected an older version of crosstool-ng that allows for building an older glibc version and an older gcc.

I don't think you can squeeze out much more from the CPUs were using here. A few tries to further optimize by specifying -mcpu and playing with -mfloat-abi/-mfpu did not really show impressive results (or, to be true, proved to be either not measurable or impacting performance to the worse).

Probably an older sourcery toolchain will work quite fine (about 2009?). The newer ones will bring a new glibc that brings new APIs.

Ah well, the joys of cross-compiling. Bah.

eLiNK · 03-07-2012, 02:01 PM

traycold
100% of document (i.e. last page): 0
crashes djvu files

tested on https://github.com/downloads/houqp/k...er-2ca5f23.zip

dave2008 · 03-07-2012, 08:33 PM

Quote:

Originally Posted by eLiNK

traycold
100% of document (i.e. last page): 0
crashes djvu files

tested on https://github.com/downloads/houqp/k...er-2ca5f23.zip

Fixed, thanks for report

New release is coming. We are too busy integrating new features this week so don't have much time to stop and stabilize stuffs.

There are still three or four new features under development and once they are done, the release will be out. You guys can refer to the download page for changes to be included in new version.

medwatt · 03-08-2012, 01:46 AM

I'm happy that finally djvu will no longer be a problem.
The link doesn't work.
https://github.com/downloads/houqp/k...er-2ca5f23.zip

dave2008 · 03-08-2012, 02:06 AM

Quote:

Originally Posted by medwatt

I'm happy that finally djvu will no longer be a problem.
The link doesn't work.
https://github.com/downloads/houqp/k...er-2ca5f23.zip

Glad you like it.

I deleted that link ;P It is not valid anymore because there were lots of changes introduced last night. It is just my built for testing purpose. All the formal releases will be added to the project's wiki page:
https://github.com/hwhw/kindlepdfviewer/wiki/Download

We will also reply to this thread when new release is out. So please be patient.

medwatt · 03-08-2012, 07:01 AM

Thanks for the efforts you're putting in.

Germanc · 03-08-2012, 11:02 AM

I was able to cross compile it but in the end I tried dave2008's snapshot :P. Djvu support works great ! And also pdf rendering is a lot faster than before, but sadly it still is slower than in duokan. I wonder if mupdf could be optimized in some way ?
In any case, one 90º rotation is done it'll come pretty handy, since I have a lot of djvu books, and converting to pdf increased the size up to 10 times, which is not good with only 4gb available. Thanks guys !

dave2008 · 03-08-2012, 11:15 AM

Quote:

Originally Posted by Germanc

Djvu support works great ! And also pdf rendering is a lot faster than before, but sadly it still is slower than in duokan. I wonder if mupdf could be optimized in some way ?

Oh, really? I don't have duokan installed, so I have no chance to compare

But at least it beats the native reader in my kindle

HW saids there is room for optimization making use the fact that kindle only needs grayscale output. But seems that nobody has time to look into that recently.

Quote:

Originally Posted by Germanc

In any case, one 90º rotation is done it'll come pretty handy, since I have a lot of djvu books, and converting to pdf increased the size up to 10 times, which is not good with only 4gb available. Thanks guys !

I just added a demo for 90 degree rotation.

But it needs more clean up I guess.

medwatt · 03-08-2012, 01:24 PM

The djvu is working great. However I notice that at one time it was not kindle was not responsive to certain actions. Then I turned it off. When I switched it on again, the actions corresponding to the set of actions were then executed. Is there a way to move landscape directly ? Also when using pdf I don't seem to find a way to crop automatically to text region because some pdfs have a lot of white space at the margins.
Thanks once more, at least djvu is readable.

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03-06-2012, 12:06 PM	#127
hawhill Wizard Posts: 1,379 Karma: 2155307 Join Date: Nov 2010 Location: Goettingen, Germany Device: Kindle Paperwhite, Kobo Mini	True. But: it is directed at building a uClibc root. You can get glibc by using it's integration for crosstool-ng, but then you could have used crosstool-ng in the first place. This is what I did. However, I decided to be close to the Amazon dev environment and carefully selected an older version of crosstool-ng that allows for building an older glibc version and an older gcc. I don't think you can squeeze out much more from the CPUs were using here. A few tries to further optimize by specifying -mcpu and playing with -mfloat-abi/-mfpu did not really show impressive results (or, to be true, proved to be either not measurable or impacting performance to the worse). Probably an older sourcery toolchain will work quite fine (about 2009?). The newer ones will bring a new glibc that brings new APIs. Ah well, the joys of cross-compiling. Bah.

03-07-2012, 02:01 PM	#128
eLiNK Addict Posts: 344 Karma: 6494 Join Date: Jan 2008 Device: PRS-505, KDXG	traycold 100% of document (i.e. last page): 0 crashes djvu files tested on https://github.com/downloads/houqp/k...er-2ca5f23.zip

03-08-2012, 01:46 AM	#130
medwatt Zealot Posts: 147 Karma: 87723 Join Date: Jan 2011 Location: Kuiper Belt Device: Kindle 3 (dead); Nook ST (dead); Sony PRS-T1; Onyx i86+	I'm happy that finally djvu will no longer be a problem. The link doesn't work. https://github.com/downloads/houqp/k...er-2ca5f23.zip

03-08-2012, 07:01 AM	#132
medwatt Zealot Posts: 147 Karma: 87723 Join Date: Jan 2011 Location: Kuiper Belt Device: Kindle 3 (dead); Nook ST (dead); Sony PRS-T1; Onyx i86+	Thanks for the efforts you're putting in.

03-08-2012, 11:02 AM	#133
Germanc Member Posts: 23 Karma: 68 Join Date: Oct 2011 Device: Kindle Keyboard	I was able to cross compile it but in the end I tried dave2008's snapshot :P. Djvu support works great ! And also pdf rendering is a lot faster than before, but sadly it still is slower than in duokan. I wonder if mupdf could be optimized in some way ? In any case, one 90º rotation is done it'll come pretty handy, since I have a lot of djvu books, and converting to pdf increased the size up to 10 times, which is not good with only 4gb available. Thanks guys !

03-08-2012, 01:24 PM	#135
medwatt Zealot Posts: 147 Karma: 87723 Join Date: Jan 2011 Location: Kuiper Belt Device: Kindle 3 (dead); Nook ST (dead); Sony PRS-T1; Onyx i86+	The djvu is working great. However I notice that at one time it was not kindle was not responsive to certain actions. Then I turned it off. When I switched it on again, the actions corresponding to the set of actions were then executed. Is there a way to move landscape directly ? Also when using pdf I don't seem to find a way to crop automatically to text region because some pdfs have a lot of white space at the margins. Thanks once more, at least djvu is readable.