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15 commits

Author SHA1 Message Date
Tom Ross
db64bf9ea4 FS #10690: Add support for 24 bit ALAC files based on libalac 0.2.0 
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@24475 a1c6a512-1295-4272-9138-f99709370657
 2010-02-03 00:37:24 +00:00
Andrew Mahone
85aad9b397 Extend av_log2 in codeclib into a generic for scanning for set bits, which can provide either log2 or leading-zero-count output, and can force mapping 0 input to 0 output if needed (otherwise 0 input produces undefined result). Replace av_log2 in lib/codeclib.h, floor_log2 and wl_min_lzc in libfaad/common.c and common.h, and count_leading_zeros in libalac/alac.c with macros using bs_generic. 
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@23903 a1c6a512-1295-4272-9138-f99709370657
 2009-12-09 02:24:45 +00:00
Nils Wallménius
727984b4ff Use clz instruction to count leading zeroes on armv5+, gives about 2% speedup with one sample on the Gigabeat S 
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@23781 a1c6a512-1295-4272-9138-f99709370657
 2009-11-29 10:57:21 +00:00
Bertrik Sikken
4f87abf90a Cosmetic fix: remove duplicate semicolons 
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@20198 a1c6a512-1295-4272-9138-f99709370657
 2009-03-04 18:15:06 +00:00
Björn Stenberg
c6b3d38a15 New makefile solution: A single invocation of 'make' to build the entire tree. Fully controlled dependencies give faster and more correct recompiles. 
Many #include lines adjusted to conform to the new standards.


git-svn-id: svn://svn.rockbox.org/rockbox/trunk@19146 a1c6a512-1295-4272-9138-f99709370657
 2008-11-20 11:27:31 +00:00
Dave Chapman
aaacb7010f Remove the mallocs for the codecdata in the m4a parser and assume a maximum size of 64 bytes (see comments in source). Also clean up the alac_set_info() function a little and make it alignment-safe. We still need to remove the seektable related mallocs. Please report if any AAC or ALAC files stop playing in Rockbox after this commit - but it is not expected to cause problems. 
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@15861 a1c6a512-1295-4272-9138-f99709370657
 2007-12-01 01:01:35 +00:00
Tomasz Malesinski
5c54ba49d5 Added macros controlling what goes to IRAM on different targets. 
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@11483 a1c6a512-1295-4272-9138-f99709370657
 2006-11-09 21:59:27 +00:00
Dave Chapman
1a03c37947 A better count_leading_zeros() function, courtesy of Jens Arnold 
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@8577 a1c6a512-1295-4272-9138-f99709370657
 2006-02-05 09:12:57 +00:00
Dave Chapman
347992e9d9 Optimised C version of count_leading_zeros() taken from alac-0.1.1. This makes ALAC very close to realtime on the ipod (just the very occasional skip during disk reading - it is realtime when the disk is sleeping). 
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@8545 a1c6a512-1295-4272-9138-f99709370657
 2006-02-03 08:27:53 +00:00
Dave Chapman
439ba9bdbb Move code into IRAM and explicitly inline some functions (gcc was inlining them anyway, but this way is better) 
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@7741 a1c6a512-1295-4272-9138-f99709370657
 2005-11-03 18:14:37 +00:00
Dave Chapman
f1844c4166 1) Always enable the DSP. 2) Change codec to output one 32-bit array per channel containing samples left-shifted to 28-bits (instead of 16-bit interleaved samples). 3) Remove the two 16KB internal predicterror_buffer arrays (we use the output arrays instead) 4) Small internal rearrangement of the code. 
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@7667 a1c6a512-1295-4272-9138-f99709370657
 2005-10-28 00:11:28 +00:00
Thom Johansen
292e4e90d7 Introduced usage of IBSS_ATTR and ICONST_ATTR in codec libraries. 
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@7660 a1c6a512-1295-4272-9138-f99709370657
 2005-10-27 11:39:01 +00:00
Dave Chapman
9a625ef7ac Add yield() calls inside the monolithic ALAC decode_frame() function - improves responsiveness of UI during ALAC decoding 
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@7557 a1c6a512-1295-4272-9138-f99709370657
 2005-09-24 12:35:18 +00:00
Dave Chapman
debbe9747e First Rockbox version of ALAC decoder - porting to work in Rockbox environment and some simple (but significant) optimisations 
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@7544 a1c6a512-1295-4272-9138-f99709370657
 2005-09-22 20:46:58 +00:00
Dave Chapman
711b2e3c88 Initial (unmodified - for reference) import of David Hammerton's Apple Lossless (ALAC) decoder from http://crazney.net/programs/itunes/alac.html 
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@7541 a1c6a512-1295-4272-9138-f99709370657
 2005-09-22 18:47:04 +00:00