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11 commits

Author SHA1 Message Date
Nils Wallménius
a87c61854e Sync codeclib bitstream code with upstream ffmpeg code. Build ffmpeg_bitstream.c as a part of the codec lib. Use this codeclib implementation in libffmpegFLAC. Implement adapted version of the unaligned longword reading optimization for coldfire from the libwma version of this code. Speeds up cook decoding by 2-3% on h300 and flac by 25% on h300, also speeds up flac decoding by 2% on c200 (decoding speed of cook on c200 is unchanged). 
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@27430 a1c6a512-1295-4272-9138-f99709370657
 2010-07-15 16:19:17 +00:00
Jens Arnold
08d3c0be37 Revert r25929. Test have shown that the assembler code is more than 50% faster than the C code both on ARM7TDMI (tested on PP5002 and PP5022) and on ARM1136JF-S (tested on Gigabeat S). If it is slower on ARM9*, it should be disabled for ARM9 only. 
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@25937 a1c6a512-1295-4272-9138-f99709370657
 2010-05-10 19:05:25 +00:00
Rafaël Carré
aee2dcf958 flac: remove ARM assembly 
Using current gcc it only makes decoding a tiny bit slower
Using eabi gcc it makes no speed difference
Tested on fuzev1

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@25929 a1c6a512-1295-4272-9138-f99709370657
 2010-05-10 13:01:40 +00:00
Nils Wallménius
b9d7f98f8c Move av_log2 function and asociated table to the codec lib, remove 3 identical implementations, always have LUT in iram (gives a *tiny* speedup on coldfire), make the clz based function return the same value as the non clz based function for 0 input to be safe (slows down flac ~2% on the gigabeat S) 
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@23858 a1c6a512-1295-4272-9138-f99709370657
 2009-12-05 16:47:43 +00:00
Nils Wallménius
685ca2672e Use clz instruction to calculate integer logarithms, speeds up decoding of one flac 8 sample by 12%. 
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@23783 a1c6a512-1295-4272-9138-f99709370657
 2009-11-29 15:21:00 +00:00
Dave Chapman
219b1f58a6 Remove some unrequired SIMULATOR checks - the CPU_* family of defines are never defined for the sim. 
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@14711 a1c6a512-1295-4272-9138-f99709370657
 2007-09-15 16:49:28 +00:00
Thom Johansen
154d959a8b Enable ARM optimisation. 
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@8931 a1c6a512-1295-4272-9138-f99709370657
 2006-03-06 11:14:29 +00:00
Dave Chapman
663fba1399 Oops 
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@7817 a1c6a512-1295-4272-9138-f99709370657
 2005-11-12 02:07:19 +00:00
Dave Chapman
2bf9be1c02 Patch #1352575 - Shorten codec from the ffmpeg project. Rockbox implementation by Mark Arigo. 
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@7814 a1c6a512-1295-4272-9138-f99709370657
 2005-11-11 19:45:36 +00:00
Thom Johansen
6ff8463216 Enabled the FLAC EMAC optimisations. 
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@7678 a1c6a512-1295-4272-9138-f99709370657
 2005-10-28 22:03:52 +00:00
Dave Chapman
273d2e81f7 New FLAC decoder from the ffmpeg project 
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@7656 a1c6a512-1295-4272-9138-f99709370657
 2005-10-26 12:35:58 +00:00