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Forum: Development

01 July 2011, 12:18 pm

Replies: 1

Including .mpc as supported audio file

Views: 11,976

Posted By Buschel

You might take a look at the svn source...

You might take a look at the svn source (http://svn.musepack.net) and review the sample decoder (http://svn.musepack.net/libmpcdec/trunk/src/sample.cpp).
You could also browse the source code of a...

Forum: Tech

03 November 2010, 10:34 am

Replies: 1

info about mpc compression

Views: 10,520

Posted By Buschel

mpc does not use window switching. it uses the...

mpc does not use window switching. it uses the same filterbank as mp1/mp2. you may detect transients via rapidly changing scalefactors -- e.g. watch the scalefactor of the lowest subband over time.

Forum: General

05 June 2010, 09:09 am

Replies: 7

Rockbox SV8 support

Views: 17,095

Posted By Buschel

Rockbox 3.6 was just released (Release Notes 3.6...

Rockbox 3.6 was just released (Release Notes 3.6 (http://www.rockbox.org/wiki/ReleaseNotes36)). This is the first official release with Musepack SV8 support. Since the first port in March several...

Forum: Development

15 May 2010, 09:07 pm

Replies: 5

Help in mpc_demux_seek() needed

Views: 15,210

Posted By Buschel

Hi r2d, thanks for your response! I already...

Hi r2d, thanks for your response!

I already submitted the following change (verified by 3 users :) to the rockbox depot:

static void
mpc_demux_seek(mpc_demux * d, mpc_seek_t fpos,...

Forum: Development

13 May 2010, 09:03 pm

Replies: 5

Help in mpc_demux_seek() needed

Views: 15,210

Posted By Buschel

The following code works on simulation and ARM...

The following code works on simulation and ARM target. It is by factors faster than the unchanged version. I am not fully satisfied with the code, but it is a proof-of-concept. Ayn further...

Forum: Development

13 May 2010, 03:53 pm

Replies: 5

Help in mpc_demux_seek() needed

Views: 15,210

Posted By Buschel

I am searching for a solution that looks similar...

I am searching for a solution that looks similar to this:

// d->bits_reader.buff - d->buffer = position within buffer
// d->bytes_total = total position in file at buffer start
//...

Forum: Development

13 May 2010, 01:12 pm

Replies: 5

Help in mpc_demux_seek() needed

Views: 15,210

Posted By Buschel

Help in mpc_demux_seek() needed

Hi all,

as you may know I have ported the sv8 decoder to rockbox. When doing so there were some issues that needed to be solved due to changes especially in the buffer code. For example the change...

Forum: General

01 April 2010, 09:42 am

Replies: 6

Listening tests

Views: 16,816

Posted By Buschel

Musepack was not optimized for target bitrates,...

Musepack was not optimized for target bitrates, but it was tuned for reaching stable quality. Different quality settings will result in different bitrates. Typical bitrates for transparency for...

Forum: Development

04 March 2008, 08:50 pm

Replies: 2

Overflow bug in fixed point fixed

Views: 12,868

Posted By Buschel

Overflow bug in fixed point fixed

Hi all,

just to mention that an overflow in the fixed point variant of the sv7-decoder for rockbox was fixed. Maybe this is of interest for you.

http://www.rockbox.org/tracker/task/8670

see...

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