Rockbox mail archiveSubject: Re: Bookmarks on H120 don't seek
Re: Bookmarks on H120 don't seek
From: Ryan Jackson <rdjackso_at_gmail.com>
Date: Tue, 12 Jul 2005 00:15:31 -0600
On 7/11/05, Hardeep Sidhu <hardeeps_at_pobox.com> wrote:
> The problem with using total elapsed time to determine offset is that it
> can be quite inaccurate when dealing with VBR files (see
> mp3_get_file_pos() for instance).
Of course. I knew that, but I tried too hard to simplify the problem. :-)
> The simplest, although not as accurate, solution I can think of would be
> to use the audiobuffer latency to calculate the difference between the
> current offset and the last offset returned by the codec (similar to how
> the elapsed time is calculated):
> current_offset = last_offset - (audiobuffer_get_latency() * bit_rate);
Good idea. I submitted a patch to do just that. Works great, except
it still winds up being ahead by ~1 second about 90% of the time. So
I just add another second to the latency and calculate using that.
Perhaps the accuracy of audiobuffer_get_latency() could be improved.
-- Ryan Jackson _______________________________________________ http://cool.haxx.se/mailman/listinfo/rockboxReceived on 2005-07-12