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Diffstat (limited to 'manual/appendix/appendix.tex')
| -rw-r--r-- | manual/appendix/appendix.tex | 42 |
1 files changed, 3 insertions, 39 deletions
diff --git a/manual/appendix/appendix.tex b/manual/appendix/appendix.tex index 6f8a47fd6d..f1d6ccca16 100644 --- a/manual/appendix/appendix.tex +++ b/manual/appendix/appendix.tex | |||
| @@ -58,41 +58,6 @@ This is a list of Feature Requests we get repeatedly that we simply | |||
| 58 | cannot do. View it as the opposite of a TODO! | 58 | cannot do. View it as the opposite of a TODO! |
| 59 | 59 | ||
| 60 | \begin{itemize} | 60 | \begin{itemize} |
| 61 | \opt{archos}{ | ||
| 62 | \item Record to WAV (uncompressed) or MP3pro format.\\ | ||
| 63 | The recording hardware (the MAS) does not allow us to do this | ||
| 64 | \item Crossfade between tracks.\\ | ||
| 65 | Crossfading would require two mp3 decoders, and we only have one. | ||
| 66 | This is not possible. | ||
| 67 | \item Support MP3pro, WMA or other sound format playback.\\ | ||
| 68 | The mp3{}-decoding hardware can only play MP3. We cannot make it play other | ||
| 69 | sound formats. | ||
| 70 | \item Converting OGG $\rightarrow$ MP3.\\ | ||
| 71 | The mp3{}-decoding hardware cannot decode OGG. It can be reprogrammed, but | ||
| 72 | there is too little memory for OGG and we have no documentation on how to | ||
| 73 | program the MAS' DSP. Doing the conversion with the CPU is impossible, since | ||
| 74 | a 12~MHz SH1 is far too slow for this daunting task. | ||
| 75 | \item Archos Multimedia support.\\ | ||
| 76 | The Archos Multimedia is a completely different beast. It is an entirely | ||
| 77 | different architecture, different CPU and upgrading the software is done | ||
| 78 | a completely different way. We do not wish to venture into this. Others | ||
| 79 | may do so. We will not. | ||
| 80 | \item Multi{}-band (or graphic) equaliser.\\ | ||
| 81 | We cannot access information for that kind of visualisation from the MP3 | ||
| 82 | decoding hardware. | ||
| 83 | \item CBR recording.\\ | ||
| 84 | The MP3 encoding hardware does not allow this. | ||
| 85 | \item Change tempo of a song without changing pitch.\\ | ||
| 86 | The MP3 decoding hardware does not allow this. | ||
| 87 | \item Graphic frequency (spectrum analyser).\\ | ||
| 88 | We cannot access the audio waveform from the MP3 decoder so we cannot analyse | ||
| 89 | it. Even if we had access to it, the CPU would probably be too slow to | ||
| 90 | perform the analysis anyway. | ||
| 91 | \item Cool sound effects.\\ | ||
| 92 | Adding new sound effects requires reprogramming the MAS chip, and we cannot | ||
| 93 | do that. The MAS chip is programmable, but we have no access to the chip | ||
| 94 | documentation. | ||
| 95 | } | ||
| 96 | \nopt{iriverh300,iaudiox5}{ | 61 | \nopt{iriverh300,iaudiox5}{ |
| 97 | \item Interfacing with other USB devices (like cameras) or 2 player games over USB.\\ | 62 | \item Interfacing with other USB devices (like cameras) or 2 player games over USB.\\ |
| 98 | The USB system demands that there is a master that talks to a slave. The | 63 | The USB system demands that there is a master that talks to a slave. The |
| @@ -104,10 +69,9 @@ The recording hardware (the MAS) does not allow us to do this | |||
| 104 | to play with it the way we'd need for any good communication to work. | 69 | to play with it the way we'd need for any good communication to work. |
| 105 | } | 70 | } |
| 106 | \item Support other file systems than FAT32 (like NTFS or ext2 etc.).\\ | 71 | \item Support other file systems than FAT32 (like NTFS or ext2 etc.).\\ |
| 107 | No. | 72 | No. (Except perhaps for ExFAT) |
| 108 | \opt{archos}{Rockbox needs to support FAT32 since it can only start off a FAT32 | 73 | Most \dap{}s can only start off FAT32 partitions, so adding support |
| 109 | partition (since that is the only way the ROM can load it), and adding}% | 74 | for more file systems will just take away valuable ram for |
| 110 | support for more file systems will just take away valuable ram for | ||
| 111 | unnecessary features. You can partition your \dap{} fine, just make sure | 75 | unnecessary features. You can partition your \dap{} fine, just make sure |
| 112 | the first one is FAT32 and then make the other ones whatever file system | 76 | the first one is FAT32 and then make the other ones whatever file system |
| 113 | you want. Just do not expect Rockbox to understand them. | 77 | you want. Just do not expect Rockbox to understand them. |