Recording Enhancements Pack

[pupil]

Nah seriously, Rob Hubbard, one of the greatest composer's EVER! IT's like listening to YMO records, who cares how oldskool electronica they sound, their tunes are amazing.


anyways... REP, yeah

[Techy_Bloke]

say i want to record in mp3 for 7hrs... (i would use rockbox but uncompressed wav my i river disk space is full...)

i boot up in  the i river software... it says that the recording will stop after 195mb MP3 or longer than 5hrs...

will it split my tracks ?? and keep recording or do i have to run back n restart it?

[petur]

Why do you think Rockbox exists? Because the original firmware is crap!

Seriously, the iriver recording code will stop mp3 recording after some time. Depends on bitrate.

Be patient, maybe mp3 encoding will come to Rockbox

[Llorean]

I believe there's a way to make lossy recordings in the tracker somewhere. I think searching for Recording Codecs will do it, I'm not sure though.

[adam917]

I believe there's a way to make lossy recordings in the tracker somewhere. I think searching for Recording Codecs will do it, I'm not sure though.

Ogg Vorbis would be a good open source lossy option for Rockbox. Speex is another lossy open source format made for speech. Why not incorporate direct recording to these formats someday?

[petur]

Ogg Vorbis would be a good open source lossy option for Rockbox. Speex is another lossy open source format made for speech. Why not incorporate direct recording to these formats someday?

sure, just get us the time and manpower....

[petur]

Martin, regarding the AGC: I looked into it and it would be nice to have it for all targets. However, the way it's done now would create another ifdef hell (linuxstb is going to add ipod recording), so I'm going to wait with AGC until recording code is a bit more universal.

[Llorean]

Just to bring this topic back up, any of the programming types here feel like having a crack at getting this old patch working: http://www.rockbox.org/tracker/task/2939

Seems to qualify as a "recording enhancement" and all.

[petur]

Yes, we should, as there's always somebody asking for it...

Also mono and maybe other bitrates should be implemented in a WAV encoder and loaded just like an mp3 encoder.

We will also need buffer management in order to boost if the encoder can't process quick enough.
(analog recording runs unboosted nowadays)

[Llorean]

Actually, I believe one of the later patches for the encoding codecs mentions something about unboosting when it's not necessary. Depending on how it does it, you may just need to reverse the behaviour.

I just wanted to make sure that patch wasn't forgotten, as I often see people asking about the feature, and not knowing the patch even exists. In all the experimental, etc, builds, I don't think I ever saw it included, even when it was up to date.

[petur]

Well I'm not very interested as I still have HD space left and would only care about a lossless encoder. Before Rockbox worked on my h340, I always hated the fact that it would only record mp3 and not some better quality.

But I agree it should get included for others who have use for it (recording lectures, ...)

We also need to do the whole rtc alarm stuff so recording can be programmed. But that probably won't be for the h1x0 series as they don't have an rtc (iirc)

[Mmmm]

We also need to do the whole rtc alarm stuff so recording can be programmed. But that probably won't be for the h1x0 series as they don't have an rtc (iirc)

No clock on the h1xx but instead of being able to set the time at which it starts recording, how about a countdown timer? So you could set it to start recording in 3 hours time or something. Of course this would only work if the unit was on for those three hours.

[jaybeee]

No clock on the h1xx but instead of being able to set the time at which it starts recording, how about a countdown timer? So you could set it to start recording in 3 hours time or something. Of course this would only work if the unit was on for those three hours.

That sounds great. And what would be brilliant would be to have the DAP 'wake' itself up and start recording. That would need a clock which we don't have, BUT I guess there could be a frig that may work something like:
- when the DAP detects that power via the charger has been enabled (use a timer plug to allow electricity to run through the charger at a specificed time), which can be allowed to happen via a setting (default is off)
- the countdown timer could start (or indeed recording could start straight away via a setting)
- then recording could start
- and if the time limit / file size limit has also been enabled, then maybe the DAP could come on at 2am, start recording straight away, and stop after 2hrs.

What d'ya reckon? I have just blurted that out, but food for thought maybe

[Mmmm]

Martin, regarding the AGC: I looked into it and it would be nice to have it for all targets. However, the way it's done now would create another ifdef hell (linuxstb is going to add ipod recording), so I'm going to wait with AGC until recording code is a bit more universal.

Ahh ok then...In that case I'm going to commit the (newly optimised and CVS ready) record split button patch (after I've compiled it 20 times ) which will break the AGC patch a bit I think...but that's life I suppose eh?

- when the DAP detects that power via the charger has been enabled (use a timer plug to allow electricity to run through the charger at a specificed time), which can be allowed to happen via a setting (default is off)

What d'ya reckon? I have just blurted that out, but food for thought maybe

Hmmm I don't know... maybe... but this would definitely have to be done in the bootloader and that's risky stuff!

[Llorean]

I'm not 100% sure the H100 can wake on power, can it?

Wouldn't the optimal solution be to turn off any un-necessary hardware, and slow the CPU down to the minimum speed during whatever countdown?

So you could set it to like, 18 hours, and during that time, until maybe 10 seconds before recording, it's in absolute lowest power mode, then it wakes, wakes all hardware, and prepares to record, then goes.

petur: There is a lossless wavpack codec in that patch I mentioned.