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Submit interim version of FS#10565. Performance optimization of atrac3 decoder for ARM. Introduce ASM routines for multiplications and two synthesis loops, refactured parts of synthesis and windowing. Speeds up decoding by a factor of 2.4 on PP502x.

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git-svn-id: svn://svn.rockbox.org/rockbox/trunk@22548 a1c6a512-1295-4272-9138-f99709370657
This commit is contained in:
Andree Buschmann 2009-08-29 19:44:27 +00:00
parent eb3cb724e8
commit f4774bf5bf
5 changed files with 343 additions and 146 deletions
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3
apps/codecs/libatrac/SOURCES
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@ -1,2 +1,5 @@
atrac3.c
#if defined(CPU_ARM)
atrac3_arm.S
#endif
../lib/ffmpeg_bitstream.c