• Status Closed
  • Percent Complete
  • Task Type Bugs
  • Category Codecs
  • Assigned To No-one
  • Operating System Iriver H100 series
  • Severity Low
  • Priority Very Low
  • Reported Version
  • Due in Version Undecided
  • Due Date Undecided
  • Votes
  • Private
Attached to Project: Rockbox
Opened by ahellmann - 2006-04-04

FS#5033 - mp3_encoder: Bugfixes and performance improvements

This patch is a major rewrite of the mp3_encoder.
- avoid overflows in the granules' bit reservour at high bitrates
- correct bitorder for bit quadruples in huffman coding
- avoid compiler complaining in 'logf' compilations
- correctly use the encoder in viewer plugin mode (no double file selection)
- use latest lame 3.97 windowing and mdct algorithms
- up to 5% better bit reservour usage by distributing overhang bits to remaining granules of current audio frame
- faster noise allocation
- better quality at low volume audio input (two path integer calculation)
- reduce screen updates
The patch gives better quality at low volume and high bit rate encodings at
40% increased speed with less IRAM usage.

Closed by  preglow
2006-04-04 19:09
Reason for closing:  Accepted
Additional comments about closing:   Warning: Undefined array key "typography" in /home/rockbox/flyspray/plugins/dokuwiki/inc/parserutils.php on line 371 Warning: Undefined array key "camelcase" in /home/rockbox/flyspray/plugins/dokuwiki/inc/parserutils.php on line 407

Nice work! But please upload as patch in the future.


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