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15 commits

Author SHA1 Message Date
Stepan Moskovchenko
7f1fbe4af2 MIDI: Increase percision of synthesizer by a factor of 4 - makes certain parts (guitar bends, mostly) 
sound more natural. Also, completely rearrange the order of operations in the delta computation. Had to 
use long longs. Probably not a good idea for speed, but the order can be optimized more later.


git-svn-id: svn://svn.rockbox.org/rockbox/trunk@15652 a1c6a512-1295-4272-9138-f99709370657
 2007-11-17 06:39:02 +00:00
Nils Wallménius
65331f1749 Revert some changes that broke looping in midiplayer 
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@15631 a1c6a512-1295-4272-9138-f99709370657
 2007-11-15 21:20:29 +00:00
Nils Wallménius
0fd4c2e455 Rearrange logic in the synthVoice loop to do less tests and remove need of a struct member for a small speedup, move some memory lookups out of the loop for a small speedup, further cosmetic changes to the synthVoice function. Change isUsed to a bool for clearer logic and also a tiny speedup 
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@15563 a1c6a512-1295-4272-9138-f99709370657
 2007-11-11 01:02:45 +00:00
Stepan Moskovchenko
47d8323deb MIDI: Fix ringing/beeks in music caused by improper parsing of some pitch bend events. 
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@15252 a1c6a512-1295-4272-9138-f99709370657
 2007-10-21 19:47:33 +00:00
Nils Wallménius
ab5a38db92 Clean out an unused struct member from the synthObject struct 
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@15189 a1c6a512-1295-4272-9138-f99709370657
 2007-10-18 13:43:13 +00:00
Stepan Moskovchenko
d33645ba13 MIDI: Optimize the new pitch bending code for a small speedup. 
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@15160 a1c6a512-1295-4272-9138-f99709370657
 2007-10-17 03:48:24 +00:00
Stepan Moskovchenko
1515ff8522 MIDI: At long last, though quick and dirty, pitch bend depth! Or, I think it works. Tested on two 
files. Let me know if anyone discovers any problems with this. This commit also includes Nils's synth 
loop optimization patch. I hope committing it does not cause problems.


git-svn-id: svn://svn.rockbox.org/rockbox/trunk@15112 a1c6a512-1295-4272-9138-f99709370657
 2007-10-15 05:11:37 +00:00
Nils Wallménius
ca46a3d095 Increase output buffer size to 32kB, results in less buffer missing in general and avoids buffer misses when lcd remote is plugged in while playing and ticking reduction is enabled. Increase max voices used on coldfire targets to 24 and reduce voices used on pp targets to 16. Put one more struct in iram for a slight speedup on coldfire. Fix comments in midiutil.h 
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@14984 a1c6a512-1295-4272-9138-f99709370657
 2007-10-04 21:01:40 +00:00
Nils Wallménius
e1940b87b0 Optimisation of the midi player, reducing the number of multiplications and memory accesses inside a very frequently executed loop, also does shifting of the whole sample when synthing is done which improves accurracy slightly, ~10% fewer buffer misses 
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@14983 a1c6a512-1295-4272-9138-f99709370657
 2007-10-04 19:36:42 +00:00
Nils Wallménius
6386dbe861 static/inline/iram raid gives nice speedup 
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@14915 a1c6a512-1295-4272-9138-f99709370657
 2007-09-30 11:21:25 +00:00
Stepan Moskovchenko
1ed54f4302 Maybe 25 was too much with the new decay rates. 
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@14911 a1c6a512-1295-4272-9138-f99709370657
 2007-09-30 09:04:39 +00:00
Stepan Moskovchenko
414724e2f4 MIDI: Kick up number of voices and decrease the decay rate, taking 
advantage of the recent speedups. Some instruments sound a lot more 
natural now.


git-svn-id: svn://svn.rockbox.org/rockbox/trunk@14910 a1c6a512-1295-4272-9138-f99709370657
 2007-09-30 09:01:38 +00:00
Nils Wallménius
6888db3240 Do not duplicate const table, make getEvent function static inline, gives about a ~1.5% speedup, put tick function in iram, ~3.5% speedup 
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@14873 a1c6a512-1295-4272-9138-f99709370657
 2007-09-27 20:17:38 +00:00
Nils Wallménius
93787dd42c Simplify the sendEvent function, makes it _slightly_ faster and quite a bit smaller, build midiplay with -O2 for coldfire, gives about a 23% speedup 
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@14872 a1c6a512-1295-4272-9138-f99709370657
 2007-09-27 18:29:50 +00:00
Nils Wallménius
0e49605aaa Move all of midiplay into its subdir and add a Makefile for it, add header files as necessary. 
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@14841 a1c6a512-1295-4272-9138-f99709370657
 2007-09-24 15:57:32 +00:00