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FS#894 - Unnecessary disk accesses on short playlists
Attached to Project:
Rockbox
Opened by Anonymous Submitter - Sunday, 09 February 2003, 07:51 GMT+2
Last edited by Steve Bavin (pondlife) - Wednesday, 14 March 2007, 17:15 GMT+2
Opened by Anonymous Submitter - Sunday, 09 February 2003, 07:51 GMT+2
Last edited by Steve Bavin (pondlife) - Wednesday, 14 March 2007, 17:15 GMT+2
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DetailsWhen the complete playlist fits in the mpeg buffer, and
the playlist is played multiple times, the tracks are reloaded from disk multiple times instead of loaded only once. From an examination of the mpeg code it appears that when all tracks in a playlist can fit in the mpeg buffer, it is filled with as many copies of the playlist tracks as will fit into the mpeg buffer, and when the low water mark is reached, the full mpeg buffer is again loaded from the disk with multiple copies of the playlist tracks. It would be desirable to detect when the entire playlist fits in the mpeg buffer and only load one copy of the tracks once and then play them repeatedly. This would decrease battery drain caused by the unnecessary disk accesses. This situation is easily demonstrated by playing a short track (smaller than the mpeg buffer) and selecting "Playback->Repeat->One". --- Firmware: CVS-030125 Model: Jukebox 5000 ROM: 5.06 USB: neg ATA: 0x300 Mask: 0000 rb_dev@yahoo.com |
This task depends upon
Closed by Daniel Stenberg (bagder)
Saturday, 19 May 2007, 17:14 GMT+2
Reason for closing: Later
Additional comments about closing: Moved to the new KNOWN_ISSUES files since this is unlikely to be fixed in a forseeable time.
Saturday, 19 May 2007, 17:14 GMT+2
Reason for closing: Later
Additional comments about closing: Moved to the new KNOWN_ISSUES files since this is unlikely to be fixed in a forseeable time.
This is not really a bug but a feature enhancement, why I
move this to the feature-request tracker instead.