Of course you can add all kind of codecs, they're not hardware dependent. Btw, gamewise a touchscreen player would be just perfect for any type of games that rely on mouse control like those old lucas arts adventures (ScummVM) etc.. Anyway, things like FM-radio, touch-screen and the like have to be supported from the start and you cant use the SDK/software to add these later on.

Regards

Well the code is in there for a lot more functionality than my player has. I think it is just a matter of enabling it to suit my player.

For me it is more important to be able the make the player the way I want it than how the player looks.

I'm not worried about the buttons because they can be remapped anyway if you got the SDK.

KNOB. I'd like that too. I care about small little thing which my player must have :D

BTW. SWRIL has answered about file access in RKP files. Currently it works only on SLC memory, and I am not sure how he did it. As I looked through the file he uploaded, it seems that he modified the firmware to add file system functions to memory of Platform_fun. If I am correct, then file access will be available only on modified firmwares, therefore such a solution is not helpful for most people (including me with keyboard problem, and including you with lack of backup firmware for your rk2608 player). I hope I'm wrong, because if I am not, I still don't get file access.

EDIT: I was right, file functions are usable only by using modified firmware.

There is a nasty bug in the SDK.

The audio only plays one channel, but through both earphones, My original firmware is ok, so it should be fixable in the SDK, however this could be difficult as we do not have any RK27xx datasheets at all.

I wonder if anyone else is getting this? If we can't get this fixed the project is dead in the water. :(

I looked through the code and it looks ok. Perhaps player thinks it is in speaker mode (even RK260X players controls speaker digitally). Check whether this happens to all the audio codecs. If you can, make some on screen messages in audio source files, so you can see what happens with buffers and variables. Make a check function which will check if Right and Left buffers are the same. And if they are different, then check at what point they become the same. In RK260X pcm buffer is joined together from two channels, maybe it is the same with 2706. If that so, also check whether it combines the channels properly. It should be combined into buffer of INT. One left INT, next right INT and so on.

If there's a bug in compiled codecs, then it is for sure dead project. I hope you will figure this out, because I already made a decision to buy 'your' player, but only if SDK works perfectly.

I buyed this player last week LINK. In Options-> System information it says:

Product name: RK27SDK
Major version ID:2.2
Hardware ID:080722

The memory size is 16 gb. There is a problem reproducing music: the volume of the singer in all songs is too low! The instruments and the base of the song is perfect but the singer volume is very low!! do you know why? Is it possible to modify my new firmware with another firmware only in the part that regards music player?
Thank you in advance guys!

flasher. I think you are right. The loudspeaker doesn't work when I unplug the earphone.

There is no worry with the codecs, they are installed in a folder outside the firmware in Rk27xx, so you can swop them around as long as the firmware supports them.

I'll have a dig around to see if I can turn the "speaker mode" off.

Help me please :(

It's really weird man. I know that all the songs (no matter what format) store some information for surround effect (phase position) so stereo music can be expanded to 5.1 channels, using for example AC3Filter of FFDShow. Therefore it is possible to explicit only voice from the stream, or only background. But I didn't heard that any portable player is up to this (what's the reason anyway).

BUT, What is even more weird, is that when I had problems with mini-jack socket in my player (already fixed) sometimes it happened that I heard only background of the music (though distorted) without the voice (or at low level). I don't know how was it possible that it was splitting the sound because of broken minijack, but that's a fact.

Perhaps it is the same with you. I would recommend you to test mono music file in your player (as it doesn't store surround phase information) and see if the voice is louder.

If it helps, you must reconvert every single song, cutting of the surround phase information (but I don't know yet how to cut it off, I don't know software for that).

Knob, could you post your source code for your player's firmware because I have the 4 gig version of your player, but, every time I try to compile the firmware and copy it to my player, it formats both my partitions and so I keep having to revert to my original firmware.

Also, does the vol key on your player work as the back button, because I think I have found the problem if that's the case.