Rockbox open source high quality audio player as a Music Player Daemon
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Remove outdated NODO list from the docs folder. Replace it with a link to the wiki.
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@26070 a1c6a512-1295-4272-9138-f99709370657
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docs/NODO
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docs/NODO
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Q1. What is this NODO document?
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A1. This is a list of Feature Requests we get repeatedly that we simply
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cannot do on the Archos. View it as the opposite of a TODO!
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Q2. Record to WAV (uncompressed) or MP3pro format!
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A2. The recording hardware (the MAS) does not allow us to do this.
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Q3. Crossfade between tracks!
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A3. Crossfading would require two mp3 decoders, and we only have one. This
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is not possible.
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Q4. Interfacing with other USB devices (like cameras) or 2 player games over
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USB
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A4. The USB system demands that there is a master that talks to a slave.
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The Archos can only serve as a slave, as most other USB devices such
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as cameras can. Thus, without a master no communication between the slaves
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can take place.
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If that is not enough, we have no ways of actually controlling the
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communication performed over USB since the USB circuit in the Archos is
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strictly made for disk-access and does not allow us to play with it the
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way we'd need for any good communication to work.
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Q5. Support MP3pro, WMA or other sound format playback!
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A5. The mp3-decoding hardware can only play MP3. We cannot make it play other
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sound formats.
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A current list of the features we will not implement is kept on the wiki:
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Q6. Converting OGG->MP3
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A6. The mp3-decoding hardware cannot decode ogg. It can be reprogrammed, but
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there is too little memory for OGG and we have no documentation on how
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to program the MAS' DSP.
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http://www.rockbox.org/wiki/NoDo
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Doing the conversion with the CPU is impossible, since a 12MHz SH1 is far
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too slow for this daunting task.
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Additional information is available here:
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Q7. Archos Multimedia support!
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A7. The Archos Multimedia is a completely different beast. It is an entirely
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different architecture, differnt CPU and upgrading the software is done a
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completely different way. We do not venture into this.
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Others may do so. We do not.
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Q8. Multi-band equalizer!
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A8. The MAS only offers the standard bass/treble settings and we can't do
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anything about it.
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Q9. Support other filesystems than FAT32 (like NTFS or ext2 or whatever)!
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A9. No.
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Rockbox needs to support FAT32 since it can only start off a FAT32
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partition (since that is the only way the ROM can load it), and adding
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support for more filesystems will just take away valueable ram for
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unnecessary features.
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You can partition your Archos fine, just make sure the first one is FAT32
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and then make the other ones whatever file system you want. Just don't
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expect Rockbox to understand them.
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Q10. Add scandisk-like features!
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A10. It would be a very slow operation that would drain the batteries and take
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a lot of useful ram for something that is much better and faster done
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when connected to a host computer.
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Q11. CBR recording!
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A11. The MP3 encoding hardware does not allow this.
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Q12. Change tempo of a song without changing pitch!
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A12. The MP3 decoding hardware does not allow this.
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Q13. Graphic frequency (spectrum) analyzer!
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A13. We can't access the audio waveform from the MP3 decoder so we can't
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analyze it. Even if we had access to it, the CPU would probably be too
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slow to perform the analysis anyway.
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Q14. Cool sound effects!
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A14. Adding new sound effects requires reprogramming the MAS chip, and we can't
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do that. The MAS chip is programmable, but we have no access to the chip
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documentation.
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http://www.rockbox.org/wiki/NoDoDiscussion