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2008-09-04Combine the Vorbis, WMA and AAC IMDCT functions and put them into the ↵Michael Giacomelli
codeclib. Combined IMDCT is now based on existing Tremor transform. Reduces CPU for 192k AAC by 21MHz on Coldfire, and 5MHz on PP5024. WMA and Vorbis should have no functional changes since they already used this code. Further optimization is possible and would benefit all 3 codecs. git-svn-id: svn://svn.rockbox.org/rockbox/trunk@18412 a1c6a512-1295-4272-9138-f99709370657
2008-07-17Use Tremor IMDCT for WMA. Gives a ~20% speedup on ARM and coldfire. All my ↵Michael Giacomelli
test samples gave equivilent or better accuracy (>>16 bit), but there may still be problems. Code becomes somewhat less readable since the IMDCT has bits of Vorbis in it, but this is not a serious issue and the old ffmpeg transform remains in SVN if anyone wants it. Also, WMA now passes Vorbis as the fastest transform codec on ARM, although MPC remains the fastest lossy codec overall. git-svn-id: svn://svn.rockbox.org/rockbox/trunk@18084 a1c6a512-1295-4272-9138-f99709370657
2007-03-24FS #6848 - optimizations of Huffman decoding in Tremor.Tomasz Malesinski
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@12903 a1c6a512-1295-4272-9138-f99709370657
2007-03-24FS #6848 - fast vector operations for ARM in Tremor.Tomasz Malesinski
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@12902 a1c6a512-1295-4272-9138-f99709370657
2005-10-17iriver: more codec library cleanup: remove codec_alloca and a some ↵Magnus Holmgren
extraneous defines. git-svn-id: svn://svn.rockbox.org/rockbox/trunk@7637 a1c6a512-1295-4272-9138-f99709370657
2005-06-08Vorbis opts: keep floor1 lookup table in IRAM.Pedro Vasconcelos
Slightly faster 16-bit clipping function. Misc: changed tabs for spaces to conform with Rockbox coding standards. git-svn-id: svn://svn.rockbox.org/rockbox/trunk@6608 a1c6a512-1295-4272-9138-f99709370657
2005-05-27Basic optimizations of the Vorbis decoder for the ihp-1x0.Pedro Vasconcelos
Capable of real-time decoding with cpu freq at 120mhz. git-svn-id: svn://svn.rockbox.org/rockbox/trunk@6527 a1c6a512-1295-4272-9138-f99709370657
2005-02-28Get malloc() and friends out of the way for the cygwin linker (and maybe ↵Jens Arnold
others), to make plugins work properly in the simulator. git-svn-id: svn://svn.rockbox.org/rockbox/trunk@6086 a1c6a512-1295-4272-9138-f99709370657
2005-02-28Renamed config.h to config-tremor.h to avoid name clash with rockbox' config.hJens Arnold
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@6075 a1c6a512-1295-4272-9138-f99709370657
2005-02-19Cosmetic changes to remove compiler warnings and compile cleanly under RockboxDave Chapman
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@6015 a1c6a512-1295-4272-9138-f99709370657
2005-02-17Initial commit of the the Ogg Vorbis 'Tremor' integer playback codecMarcoen Hirschberg
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@5996 a1c6a512-1295-4272-9138-f99709370657
generated by cgit v1.1 at 2026-05-14 10:20:23 +0000