Cowon D2

[shotofadds]

Hi! How can i set the mode "where you can get the actual pixel being pressed..."?

At the moment there's no option to do that in the menus, as the GUI has not really been adapted to that mode, yet. But, if you're interested in coding for the touchscreen, take a look at the test_touchpad plugin - it should show you how to use the relevant APIs.

...In other news...

On my way to work this morning I was able to use Rockbox instead of the Cowon firmware to listen to music for the first time! I had an album playing for about 40 minutes with no show-stopping problems.

This is really good news as it also proves the NAND driver isn't that broken if it's able to play a whole album without problems.

There are a few issues to work out: the headphone volume control isn't working, and there's some distortion, maybe due to setting the mixer volume incorrectly. Those should be simple fixes, though. The EQ (software 5-band and hw bass/treble) seem to work fine, but at the moment they mostly just add to the distortion.

With no EQ it's currently running at a 30.2% boost ratio (~90MHz) on LAME 192k MP3 files, which sounds rather high, but we can work on that.  

As a bonus, getting the sound buffering mechanism working also means that the Gameboy and MpegPlayer plugins now partially work:

- The Gameboy emulator is very slow and needs some work on the keymappings. But it works, and has sound.

-  MpegPlayer seems to run at a reasonable speed but it's hard to tell because the output is rotated and repeating across the display. The lcd_yuv_blit() function clearly needs some work.

[shotofadds]

* shotofadds feels he deserves a few more than the allowed 3 smileys per post and adds a few more:

 

[LambdaCalculus]

...In other news...

On my way to work this morning I was able to use Rockbox instead of the Cowon firmware to listen to music for the first time! I had an album playing for about 40 minutes with no show-stopping problems.

This is really good news as it also proves the NAND driver isn't that broken if it's able to play a whole album without problems.

/me wonders if a "Ladies and Gentlemen..." message is appropriate right now

[shotofadds]

I'm going to tidy up a few things and commit when I'm sure it's not going to damage anyone's hearing. Then cometh the email...

[JdGordon]

CONGRATS!

[x5062]

Hi.
I was made a bootloader(1.55) and rockbox.zip file. and format my d2, and put in .rockbox folder at root folder.

but rockbox can't play musics(mp3, wma format) and can't playing gameboy emule.(.gbc)

How can I fix this problem?

[GodEater]

Wait for shotofadds to commit his working code, or write your own.

This is not a finished port yet - have patience!

[redmisquito]

Hi.
I was made a bootloader(1.55) and rockbox.zip file. and format my d2, and put in .rockbox folder at root folder.

but rockbox can't play musics(mp3, wma format) and can't playing gameboy emule.(.gbc)

How can I fix this problem?

Doing a search before asking a question would be a good start. 

[Yeeze]

Wow really nice!

Congrats!

THANK YOU shotofadds!

Can't wait to hear it myself ;-)

[shotofadds]

Can't wait to hear it myself ;-)

I'm working on that. 

The distortion is gone, the volume control's working now, and I'm just tidying up a few things before I can commit the changes. Hopefully that will happen in the next couple of days.

[Shady]

Good job shotofadds,  thank you very much!

/me wonders why my previous post has been removed

[Llorean]

Because this is a development thread and is supposed to be limited to posts that actually forward development.

[shotofadds]

Initial sound playback has been added to the latest SVN build (r17755). As always, please read the Known Issues on the CowonD2Info wiki page before reporting any problems.

Ignore any errors about playlist control files, etc. These appear because the filesystem is read-only and Rockbox is attempting to write a playlist file to the disk.

For the same reason, you can adjust the sound settings (volume, balance, treble and bass and the 5-band EQ), but your settings won't be saved. Also the 5-band EQ is tricky to use, as the keymap needs fixing.

[stel]

Congratulations shotofadds.
I for one appreciate your efforts. The D2 is another step closer to being perfect.

Sound is now working on my 8Gb D2. I've tested flac, mpc and mp3 files and they all work. A little bit of info: flac runs with 0% cpu boost, mpc at 4.1% and mp3 at 29%

Well done...

[shotofadds]

Tonight's progress: the clicks and pops are gone, the hold switch now works, and many things have seen a massive speed increase (eg. codecs, emulator plugins, etc). Phew, I need a night off!

The speed increase comes from disabling IRAM - for some unknown reason this was causing a major performance issue. I haven't looked into the problem, but figured we are better off without it until we figure out what the issue is.

Stel, you may want to re-test those codecs with the latest build (r17774). I don't think any of those should boost at all now at 48MHz.