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32 commits

Author SHA1 Message Date
Michael Giacomelli
bab671eb4d Fix nasty bug that causes low bitrate files to crash because of an incorrect assumption about MDCT window sizes on my part. Clears the way for further low bitrate fixes. 
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@13937 a1c6a512-1295-4272-9138-f99709370657
 2007-07-20 03:41:09 +00:00
Michael Giacomelli
4f9bffe18e Fix warnings. 
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@13866 a1c6a512-1295-4272-9138-f99709370657
 2007-07-13 01:41:31 +00:00
Jens Arnold
42bd5b46f0 WMA codec: Coldfire is capable of unaligned memory accesses, so lets make use of it. ~1.5% speedup. 
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@13865 a1c6a512-1295-4272-9138-f99709370657
 2007-07-12 22:12:25 +00:00
Michael Giacomelli
9ac2756e94 Fix the above by including all required files and updating SOURCES. 
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@13860 a1c6a512-1295-4272-9138-f99709370657
 2007-07-12 03:26:20 +00:00
Michael Giacomelli
362f894a53 Sync the bitstream functions with ffmpeg. Switch wmadeci.c over to get_vlc2 which is how ffmpeg now does it and is also slightly faster. Add in defines for later VLC memory usage optization. Kill some header files that weren't needed and update others that were out of sync. We're now much closer to the current ffmpeg codec which should make fixing the remaining issues much easier. 
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@13859 a1c6a512-1295-4272-9138-f99709370657
 2007-07-12 03:17:19 +00:00
Dave Chapman
a9df713ee9 TAB and whitespace police 
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@13858 a1c6a512-1295-4272-9138-f99709370657
 2007-07-11 23:07:41 +00:00
Michael Giacomelli
28b0c58726 Don't assume files are WMAv2, instead actually check that they are and quit gracefully if they are not. 
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@13855 a1c6a512-1295-4272-9138-f99709370657
 2007-07-11 16:58:11 +00:00
Michael Giacomelli
00b16fab6c Ancient ffmpeg bug fix that should never have been missed. Prevents floating point value from truncating downward. My files are byte for byte identical with this fix, but the ffmpeg mailing list claims its important. 
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@13846 a1c6a512-1295-4272-9138-f99709370657
 2007-07-11 01:20:31 +00:00
Dave Chapman
0fd4e3f8e1 Restore some lost copyright headers from the ffmpeg project 
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@13834 a1c6a512-1295-4272-9138-f99709370657
 2007-07-09 18:01:20 +00:00
Dave Chapman
88e32c2fc6 Reorganise the wma_decode_superframe() function - split into a separate init and decode functions. Each call to the decode function now decodes a single frame (2048 samples) instead of an entire superframe (which typically contained about 7 or 8 frames and can in theory contain up to 16 frames). This allows us to replace the 256KB output buffer with a 8KB buffer, and also perform more yields in the main decoding loop. 
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@13833 a1c6a512-1295-4272-9138-f99709370657
 2007-07-09 17:24:00 +00:00
Dave Chapman
85aa3a8d38 Code reorganisation - move the vlc functions back to common.c/common.h (where they originally were in the ffmpeg source). This code is still identical to the ffmpeg source. 
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@13830 a1c6a512-1295-4272-9138-f99709370657
 2007-07-09 10:53:56 +00:00
Michael Giacomelli
4b1cf3ea44 Compute MDCT in place. Make that place within IRAM. Gives nice speed boost on ARM. Probably make a huge difference on Coldfire. 
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@13828 a1c6a512-1295-4272-9138-f99709370657
 2007-07-09 02:48:32 +00:00
Michael Giacomelli
5a1999eacd Move very commonly accessed array into IRAM. Should give a nice speedup on Coldfire. 
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@13827 a1c6a512-1295-4272-9138-f99709370657
 2007-07-09 01:59:33 +00:00
Dave Chapman
0361fd5e50 wma_decode_end() doesn't exist any more - it was only used to deallocate memory. 
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@13826 a1c6a512-1295-4272-9138-f99709370657
 2007-07-09 00:35:36 +00:00
Michael Giacomelli
899212858c Code clean up. 
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@13825 a1c6a512-1295-4272-9138-f99709370657
 2007-07-09 00:21:19 +00:00
Michael Giacomelli
9b176d88c8 Inline wma_window functions. No real performance improvement. Also, thanks to Benjamin Larsson for cleaning up some code I was simply to lazy to fix myself. 
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@13823 a1c6a512-1295-4272-9138-f99709370657
 2007-07-08 22:03:56 +00:00
Michael Giacomelli
610d3b4cc5 Merge bit reverse tables together. 
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@13822 a1c6a512-1295-4272-9138-f99709370657
 2007-07-08 21:52:49 +00:00
Michael Giacomelli
93bc5ef1d6 Fix rare overflow when decoding MDCT coefficients. As a bonus, decoding is now slightly faster. Thanks to preglow for suggesting I test with a full scale normalized square wave. 
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@13815 a1c6a512-1295-4272-9138-f99709370657
 2007-07-08 06:06:00 +00:00
Michael Giacomelli
030dce6f88 Fix previous 
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@13814 a1c6a512-1295-4272-9138-f99709370657
 2007-07-08 05:57:14 +00:00
Michael Giacomelli
f5114daa73 Move MDCT reconstruction window code over to new trig function. Improves accuracy significantly and slightly reduces code size. Codec SNR now appears to be limited by truncation to 16 bit. Comparison to MS decoder gives > 91 dB of agreement, and a lower RMS error verses the source wav then MS. Additionally, move one commonly accessed table into IRAM. 
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@13813 a1c6a512-1295-4272-9138-f99709370657
 2007-07-08 05:16:24 +00:00
Michael Giacomelli
2f1da8d24a Merged in first part of ffmpeg accuracy improvments. No change on my samples, but brings us closer to ffmpeg's source and clears the way for additional bug fixes. 
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@13804 a1c6a512-1295-4272-9138-f99709370657
 2007-07-06 02:44:58 +00:00
Michael Giacomelli
e0473717e5 Merged in ffmpeg combined MDCT reconstruction. Saves us a 16KB buffer, and gives a nice speed increase. Brings code much closer to ffmpeg's. 
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@13803 a1c6a512-1295-4272-9138-f99709370657
 2007-07-06 01:50:24 +00:00
Dave Chapman
9b96d66621 Yet more dead code removal 
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@13789 a1c6a512-1295-4272-9138-f99709370657
 2007-07-04 20:45:00 +00:00
Dave Chapman
ba3f4ed565 Remove some unused code 
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@13788 a1c6a512-1295-4272-9138-f99709370657
 2007-07-04 20:27:26 +00:00
Jens Arnold
e7cdd6cbc6 Assemblerised CMUL() for ARM, giving ~20% speedup. 
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@13787 a1c6a512-1295-4272-9138-f99709370657
 2007-07-04 19:23:18 +00:00
Michael Giacomelli
fe8ae10ab4 Attempt #2 
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@13786 a1c6a512-1295-4272-9138-f99709370657
 2007-07-04 17:51:52 +00:00
Michael Giacomelli
51b3bbbf1c Opps fix static ASM function on coldfire 
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@13785 a1c6a512-1295-4272-9138-f99709370657
 2007-07-04 17:26:24 +00:00
Michael Giacomelli
a16d0f389e Code clean up: Move fixed point functions into their own files. Move various lookup tables into header files. 
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@13784 a1c6a512-1295-4272-9138-f99709370657
 2007-07-04 17:15:09 +00:00
Jens Arnold
5717a0af87 Shorten the coldfire fixmul32() by 2 instructions and use one register less. Smaller code, but practically no speed change. 
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@13783 a1c6a512-1295-4272-9138-f99709370657
 2007-07-04 00:31:17 +00:00
Thom Johansen
4aeab55f67 Replace some 64 bit multiplies with assembly on Coldfire targets. Codec lots closer to realtime on those targets now. 
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@13779 a1c6a512-1295-4272-9138-f99709370657
 2007-07-03 19:36:26 +00:00
Dave Chapman
9cb40ea5e3 WMA clean-up commit - fix 64-bit sim warnings, set svn keywords property, and add new files to apps/FILES 
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@13771 a1c6a512-1295-4272-9138-f99709370657
 2007-07-03 10:21:23 +00:00
Dave Chapman
c72824786a Initial, work-in-progress, version of a WMA codec using Michael Giacomelli's fixed-point and malloc-less WMA decoder (based on the ffmpeg WMA decoder from early 2006, and also building on the work started by Paul Jones). The codec itself and the ASF parsing code were written by me, inspired by the ASF parser in libasf. Current performance is around 400% realtime on gigabeat, 100% realtime on PP and 20% realtime on Coldfire. 
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@13769 a1c6a512-1295-4272-9138-f99709370657
 2007-07-03 09:25:36 +00:00