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Forum: Development

13 August 2006, 12:52 am

Replies: 26

Improved seeking for mpc files

Views: 44,616

Posted By snowgoon

There are a couple of bugs/improvements that I...

There are a couple of bugs/improvements that I should fix that could help get it approved for rb integration, eg. seeking backwards (a problem with rb core, which I can solve), and static seektable...

Forum: Development

19 April 2006, 12:49 am

Replies: 26

Improved seeking for mpc files

Views: 44,616

Posted By snowgoon

Cool! I'm glad someone is happy ;-) I suspect...

Cool! I'm glad someone is happy ;-) I suspect there are a couple of bugs in the patch as it doesn't work on iPod mini (apparently).

Changes made:

- lookup tables for huffman decoding, like in...

Forum: Development

18 April 2006, 09:38 am

Replies: 26

Improved seeking for mpc files

Views: 44,616

Posted By snowgoon

Patch submitted to Rockbox here:...

Patch submitted to Rockbox here: http://www.rockbox.org/tracker/task/5172

Forum: Development

03 April 2006, 08:30 am

Replies: 26

Improved seeking for mpc files

Views: 44,616

Posted By snowgoon

Update on the slow seeking on Rockbox: The...

Update on the slow seeking on Rockbox:

The problem occurs when the filebuf goes empty, ie. if the seek point is not within the api's buffer. Once the buffer is empty the api starts filling the...

Forum: Development

02 April 2006, 12:34 pm

Replies: 26

Improved seeking for mpc files

Views: 44,616

Posted By snowgoon

I've added the -128 hack to the patches to avoid...

I've added the -128 hack to the patches to avoid anyone damaging their ears when playing back incorrectly encoded files. I've written a tool to repack mpc files to correct the scale factor bug, in...

Forum: Development

01 April 2006, 11:32 am

Replies: 26

Improved seeking for mpc files

Views: 44,616

Posted By snowgoon

A couple of new versions: ...

A couple of new versions:

http://snowgoon.musepack.net/experimental/libmpcdec_patch_v1_2_3d.zip
http://snowgoon.musepack.net/experimental/rockbox_mpc_seek_patch_1_2_3d.zip

Fixes:
* id3v2...

Forum: Development

30 March 2006, 12:53 pm

Replies: 26

Improved seeking for mpc files

Views: 44,616

Posted By snowgoon

I have updated the libmpcdec version to be...

I have updated the libmpcdec version to be rockbox friendly:

http://snowgoon.musepack.net/experimental/libmpcdec_patch_v1_2_3c.zip

and a version for rockbox itself:
...

Forum: Development

29 March 2006, 11:16 pm

Replies: 26

Improved seeking for mpc files

Views: 44,616

Posted By snowgoon

I mean bit accurate. This was after about 43548...

I mean bit accurate. This was after about 43548 (x2) seeks in my test file, ie. one to a random point in the file and one to the frame being decoded, for every frame.

I will work on the diff...

Forum: Development

29 March 2006, 04:11 am

Replies: 26

Improved seeking for mpc files

Views: 44,616

Posted By snowgoon

I have some important updates on the seeking...

I have some important updates on the seeking issue. Sorry if the following is a bit technical, but this is development thread after all!

Inspired by death (!), I decided to test the accuracy of...

Forum: Development

25 March 2006, 10:53 am

Replies: 26

Improved seeking for mpc files

Views: 44,616

Posted By snowgoon

After playing around with this a bit more I found...

After playing around with this a bit more I found that the maximum length of frame dependencies was 31 (ie 32 frames linked), and from the look of the original seek and encoder code this is the...

Forum: Development

24 March 2006, 11:34 pm

Replies: 26

Improved seeking for mpc files

Views: 44,616

Posted By snowgoon

Thanks for the replies. This method worked a...

Thanks for the replies. This method worked a treat on the test file. Thanks Shy.

Not sure if I need to explain the bit about setting scale factors to -128 - I meant scale factor indexes for...

Forum: Development

24 March 2006, 10:28 am

Replies: 26

Improved seeking for mpc files

Views: 44,616

Posted By snowgoon

Improved seeking for mpc files

Does anyone have any thoughts on the seeking implemented in libmpcdec (or in_mpc, etc.)?

I'm thinking of testing an improvement to the seeking in mpc files on Rockbox (http://www.rockbox.org). ...

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