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72 commits

Author SHA1 Message Date
Jens Arnold
5c80a838e4 libdemac: Separate filtering calls per channel in preparation for the dual-core split on PP. This also means less inlining, and hence speeds up decoding on single core slightly, due to better caching behaviour. 
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@25005 a1c6a512-1295-4272-9138-f99709370657
 2010-03-03 21:20:13 +00:00
Jens Arnold
0030ae28b5 Get rid of .rept in inline asm() blocks where possible. Using .rept causes gcc to wrongly estimate the size of the asm(), leading to (potential) compilation problems. This is necessary for the upcoming restructuring, and should fix ARMv6+ sim builds as well. No functional change. 
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@25004 a1c6a512-1295-4272-9138-f99709370657
 2010-03-03 20:52:02 +00:00
Andree Buschmann
398b37124e Remove all tabs within codec path. 
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@24862 a1c6a512-1295-4272-9138-f99709370657
 2010-02-22 19:44:05 +00:00
Andrew Mahone
950b2dfa2c Clarify comments in ARMv6 divider regarding special-case handling of large (high bit set) numerators. 
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@24783 a1c6a512-1295-4272-9138-f99709370657
 2010-02-20 06:29:23 +00:00
Jens Arnold
b8eb272e48 libdemac: Add x86/x86_64 MMX asm for the filters. Not relevant for target but speeds up decoding on x86/x86_64 sims. Average speedup ranges from 25% for -c2000 to 3 times for -c5000; on Intel Atom it's even 45% for -c2000 to 6 times for -c5000. 
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@24663 a1c6a512-1295-4272-9138-f99709370657
 2010-02-15 01:27:04 +00:00
Jens Arnold
6edf71e9b9 Remove leftover from before make system rework. 
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@24602 a1c6a512-1295-4272-9138-f99709370657
 2010-02-11 20:33:34 +00:00
Jens Arnold
0a291fff12 APE: Fused vector math for the filters on ARMv5te. Speedup on Cowon D2 is ~4% for -c2000..-c4000 (less for -c5000). Thanks to Frank Gevaerts for testing. 
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@24590 a1c6a512-1295-4272-9138-f99709370657
 2010-02-10 23:23:17 +00:00
Jens Arnold
1cc4bd8f86 APE: Fused vector math for the filters on ARMv6. Speedup is ~2.5% for -c2000, ~7% for -c3000 and higher. 
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@24569 a1c6a512-1295-4272-9138-f99709370657
 2010-02-08 21:59:24 +00:00
Jens Arnold
69fe1ad830 Put back the insane buffer where it belongs on non-ARM, and simplify the selection. 
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@24512 a1c6a512-1295-4272-9138-f99709370657
 2010-02-04 20:20:10 +00:00
Andrew Mahone
723d5c6da6 Fix yellow: add newline at EOF in udiv32_arm-pre.S 
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@24508 a1c6a512-1295-4272-9138-f99709370657
 2010-02-04 08:55:36 +00:00
Andrew Mahone
b1caf4a07d Use all available codec iram for reciprocal table in APE codec on ARMv4. Done by linking first with the table empty to determine free space, then sizing table to fill it. 
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@24507 a1c6a512-1295-4272-9138-f99709370657
 2010-02-04 08:45:38 +00:00
Andrew Mahone
8ed7bda64c Move udiv32_arm.S into libdemac, as this divider is specialized for the APE codec and an optimized divider is already provided for general use in codeclib. 
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@24506 a1c6a512-1295-4272-9138-f99709370657
 2010-02-04 05:49:37 +00:00
Jens Arnold
9f6586698a APE codec: Speed up decoding of -c2000 and higher on ARMv4 and coldfire by fusing vector math for the filters. Speedup is roughly 3.5% for -c2000, 8% for -c3000 and 12% for -c4000. To be extended to other architectures. 
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@24473 a1c6a512-1295-4272-9138-f99709370657
 2010-02-02 22:50:21 +00:00
Andrew Mahone
436f4d3a20 Improve libdemac SATURATE slightly on ARMv4/5, move filter buffers and code out of IRAM for sizes that aren't near realtime and extend udiv32_arm reciprocal table. 
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@24376 a1c6a512-1295-4272-9138-f99709370657
 2010-01-30 02:20:54 +00:00
Andrew Mahone
e76f30a57c Improvements to specialized dividers for APE codec: 
* Use Newton-Raphson divider on ARMv5e and ARMv6, about 7% speedup on Gigabeat S.
* On ARMv4 targets using IRAM, remove insane filter buffer from IRAM, fill available IRAM with LUT of reciprocals for small divisors - speedup varies according to target and available IRAM, APE normal sample is approx. 109% RT on e200.
* Rename apps/codecs/lib/udiv32_armv4.S to apps/codecs/lib/udiv32_arm.S, which includes dividers for all ARM targets specialized for APE.


git-svn-id: svn://svn.rockbox.org/rockbox/trunk@24354 a1c6a512-1295-4272-9138-f99709370657
 2010-01-28 02:28:52 +00:00
Michael Sparmann
099df2fb71 Make the codecs use more IRAM on S5L870x, as we have plenty of it. 
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@23594 a1c6a512-1295-4272-9138-f99709370657
 2009-11-09 20:01:07 +00:00
Jens Arnold
82dc91a102 Don't use ldrd/strd on ARMv5 since not all revisions support them and the gain from using them is minimal (basically code size only). 
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@21916 a1c6a512-1295-4272-9138-f99709370657
 2009-07-17 09:17:54 +00:00
Björn Stenberg
6427d127aa Calculate watermark from bitrate and harddisk spinup time. 
Use a smaller PCM buffer on targets with 2MB or less ram.
(FS#9703)


git-svn-id: svn://svn.rockbox.org/rockbox/trunk@19743 a1c6a512-1295-4272-9138-f99709370657
 2009-01-10 21:10:56 +00:00
Bertrik Sikken
32c2f455d1 static/const/#include/tab police on various files 
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@19643 a1c6a512-1295-4272-9138-f99709370657
 2009-01-02 21:43:52 +00:00
Bertrik Sikken
8e22f7f5b0 Make local functions static in codecs, where possible. 
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@19612 a1c6a512-1295-4272-9138-f99709370657
 2008-12-29 19:49:48 +00:00
Jens Arnold
ed945e31c1 Slight speedup for the APE filters. Most noticeable on coldfire (+3.5% for -c2000), but also helps on the arm targets (+0.9% for -c2000 on PP5002). This transformation is oveflow safe, as absres < 2^24 is guaranteed. 
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@19556 a1c6a512-1295-4272-9138-f99709370657
 2008-12-22 08:33:49 +00:00
Jens Arnold
dca9f42cdf Fix decoding of stereo frames with silence in only one channel. * Make the standalone decoder contain debugging information. 
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@19552 a1c6a512-1295-4272-9138-f99709370657
 2008-12-21 23:49:02 +00:00
Jens Arnold
0bf6e36628 Fix handling of 8 bit mono and stereo APE files, and also optimise 16 and 24 bit output in the standalone decoder a bit. 
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@19517 a1c6a512-1295-4272-9138-f99709370657
 2008-12-21 01:29:36 +00:00
Jens Arnold
a29b659758 Assembler optimised mono predictor for ARM. Speedup for -c1000 mono is ~5% on PP, ~8% on Gigabeat S (less for higher compression levels). Also fix some overlooked comments in the stereo predictor. 
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@19375 a1c6a512-1295-4272-9138-f99709370657
 2008-12-09 23:20:59 +00:00
Jens Arnold
c1cd0469ca Implement mono predictor in assembler for coldfire, yielding a ~6% speedup for mono -c1000. Apply ideas gained from it back to the stereo predictor, saving 4 instructions. No speed increase for stereo, probably due to cache aliasing effects. * 80-column police. 
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@19296 a1c6a512-1295-4272-9138-f99709370657
 2008-12-02 02:26:04 +00:00
Jens Arnold
75bd4adbc2 Shuffling around register allocation allows to keep decoded0 and decoded1 in registers, for a slight speedup. 
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@19287 a1c6a512-1295-4272-9138-f99709370657
 2008-12-01 13:21:06 +00:00
Jens Arnold
89a6fe7ae4 Remove extraneous semicolons, and fix a comment. 
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@19268 a1c6a512-1295-4272-9138-f99709370657
 2008-11-30 11:54:20 +00:00
Jens Arnold
797ef6585a Fix APE 16-bit mono output: mono signals need to be scaled for rockbox. 
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@19264 a1c6a512-1295-4272-9138-f99709370657
 2008-11-30 01:01:04 +00:00
Jens Arnold
88270f7622 Resurrect the ARM7 16-bit packed vector addition/subtraction for ARMv5, giving a nice speedup for the higher compression levels (tested on Cowon D2). 
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@19260 a1c6a512-1295-4272-9138-f99709370657
 2008-11-28 23:50:22 +00:00
Jens Arnold
113c285045 On ARM9TDMI (e.g. Gigabeat F) it's faster to use a ldr/str pair than add+ldmia/stmia for 2 registers. On ARM7TDMI a str pair is equally fast, so go for the simpler macro and use it for all ARMv4. 
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@19250 a1c6a512-1295-4272-9138-f99709370657
 2008-11-27 22:07:46 +00:00
Jens Arnold
6d34e33b94 Speed up the predictor a little by using ldrd/strd on ARMv5+. This required shuffling around the register allocation somewhat. Performance on ARMv4 is unaffected. 
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@19248 a1c6a512-1295-4272-9138-f99709370657
 2008-11-27 20:52:23 +00:00
Jens Arnold
5b0d74a7d3 Get rid of unused return values, except the one from decode_chunk() which will be used in the dual core split. 
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@19236 a1c6a512-1295-4272-9138-f99709370657
 2008-11-26 18:01:18 +00:00
Jens Arnold
d7e4e54bcb Reorder instructions to avoid pipeline stalls on ARMv6 wherever possible (sometimes using different registers to allow this). Speeds up the predictor by almost 20% on ARMv6 (overall speedup for -c1000 is 5%), and might also help a bit on ARMv5. ARMv4 speed is unaffected. 
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@19210 a1c6a512-1295-4272-9138-f99709370657
 2008-11-24 23:09:09 +00:00
Jens Arnold
3761c0108c Branch optimisation in both C (giving hints to gcc - verified using -fprofile-arcs and gcov) and asm files. Biggest effect on coldfire (-c1000: +8%, -c2000: +5%), but ARM also profits a bit (less than 1% on ARM7TDMI, around 1% on ARM1136). 
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@19199 a1c6a512-1295-4272-9138-f99709370657
 2008-11-24 18:40:49 +00:00
Jens Arnold
66c0cf2eb1 Tweak the ARMv6 filter assembly a bit further. 
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@19198 a1c6a512-1295-4272-9138-f99709370657
 2008-11-24 18:40:43 +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
Jens Arnold
2a5053f58c Several tweaks and cleanups: * Use .rept instead of repeated macros for repeating blocks. * Use MUL (variant) instead of MLA (variant) in the first step of the ARM scalarproduct() if there's no loop. * Unroll ARM assembler functions to 32 where not already done, plus the generic scalarproduct(). 
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@19144 a1c6a512-1295-4272-9138-f99709370657
 2008-11-19 21:31:33 +00:00
Jens Arnold
77934cbc96 Compile-time choice between 16 bit and 32 bit integers for the filters. 32 bit filters are faster on ARMv4 (with assembler code), so use them there. Nice speedup on PP and Gigabeat F/X. 
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@19140 a1c6a512-1295-4272-9138-f99709370657
 2008-11-19 00:34:48 +00:00
Jens Arnold
1b14167861 Centralise compile-time configuration. 
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@19121 a1c6a512-1295-4272-9138-f99709370657
 2008-11-16 17:49:37 +00:00
Jens Arnold
b5c0afc442 Move the contents of rangecoding.h into entropy.c, and remove the former. It was only used there, and defined some variables in the .h 
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@19116 a1c6a512-1295-4272-9138-f99709370657
 2008-11-16 12:58:15 +00:00
Jens Arnold
5ba11af855 Avoid unnecessary register copies on ARMv5. 
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@19112 a1c6a512-1295-4272-9138-f99709370657
 2008-11-16 10:12:38 +00:00
Dave Chapman
3e8a2bfa12 Make the standalone demac program compile again 
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@19107 a1c6a512-1295-4272-9138-f99709370657
 2008-11-15 00:35:07 +00:00
Jens Arnold
9a0224fd28 Fix comments. 
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@19102 a1c6a512-1295-4272-9138-f99709370657
 2008-11-12 18:20:25 +00:00
Jens Arnold
60e16e8e7a Tiny speedup by simplifying the filter wrap check. 
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@19101 a1c6a512-1295-4272-9138-f99709370657
 2008-11-12 18:16:27 +00:00
Jens Arnold
1600e4918e Tiny performance improvement for the (not yet usable) compression levels >= -c2000 on ARM7TDMI, utilizing the multiplier's early termination. 
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@19099 a1c6a512-1295-4272-9138-f99709370657
 2008-11-12 09:18:36 +00:00
Jens Arnold
fe04e40be7 Further optimised (vs. libgcc) unsigned 32 bit division for ARMv4 (based on the ARMv5(+) version from libgcc), in IRAM on PP for better performance on PP5002, and put into the codeclib for possible reuse. APE -c1000 is now usable on both PP502x and PP5002 (~138% realtime, they're on par now). Gigabeat F/X should also see an APE speedup. 
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@19009 a1c6a512-1295-4272-9138-f99709370657
 2008-11-05 00:10:05 +00:00
Jens Arnold
7a835ee0c6 Some entropy decoder tweaks. Also removed unnecessary 'tmp' variables. 
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@19008 a1c6a512-1295-4272-9138-f99709370657
 2008-11-04 23:46:04 +00:00
Jens Arnold
dd7cacdc88 Another minor improvement: better pipelining and one less register used in vector addition/ subtraction. 
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@18739 a1c6a512-1295-4272-9138-f99709370657
 2008-10-07 20:52:42 +00:00
Jens Arnold
6b84f60046 APE: Further ARMv6 filter optimisations: Save 4 'ror's per round by utilising the shift feature of the 'pack halfword' instructions in the unaligned vector addition/ subtraction, better pipelining in the aligned scalarproduct(), and a new method to calculate the unaligned scalarproduct(). 
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@18736 a1c6a512-1295-4272-9138-f99709370657
 2008-10-07 19:40:17 +00:00
Jens Arnold
6219f4c862 Fix warnings on non-arm targets. 
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@18702 a1c6a512-1295-4272-9138-f99709370657
 2008-10-03 21:52:47 +00:00