Update to bsnes v019r09 release.

Alright, I'm in a semi-good mood.







    http://byuu.cinnamonpirate.com/files/bsnes_v019_wip9.zip




 This one uses the old win32 interface, and adds a new feature I'd
like people with sound troubles to try out. The config file now
contains "audio.latency". Don't mess with "audio.frequency", it won't
do you any good and gets overridden by the speed regulation settings
for now.

 The audio.latency is a precise measurement of the millisecond delay
between sound being output by a real SNES and hearing that same sound
in bsnes. It takes into account the current playback frequency, as
well as the three-ring buffering system used by bsnes' audio system.
 Formula: sample_latency = CURRENT_playback_frequency / 1000 *
config_file_latency * 3 (so 32khz + 75ms latency means each ring
buffer is 800 samples long). The new formula should make latency sound
better (it's consistent now) on fast / slow emulation speed throttling
settings as well.
 I also cut out the fourth ring, since it was redundant. This should
make bsnes appear ~25% more responsive to sound with the same buffer
latency. As a result, I increased the latency to 75ms (it was at ~45
before).
 I'd like to know what the lowest good value is that works on 95% of
sound cards, so I can use that. I'll let people with cheap sound cards
increase their latency setting manually (eventually it will be an
option in the GUI).

               **NOTE:** this version does nothing for triple
buffering/vsync/whatever. You must _disable_ triple buffering to try
out the latency settings. This version is strictly to test audio
playback support.

 I also added in my audio point resampler. Good god, it sounds
terrible. Regardless of the latency setting (either really high or
really low), the pitch difference between each audio ring is
_extremely_ noticeable. The code is there now in
src/ui/audio/dsound.cpp : AudioDS::run_videosync(), if anyone would
like to take a look. I'll hold my breath ;)

               -----

 Comparisons against ZSNES at this point are rather silly. Aside from
much more flexible timings, it probably has a nice audio resampler,
which I don't. If I faked CPU/SMP clock timings, I could get the SNES
spitting out 60 frames a second and 32khz audio a second. I'm not
going to do that, so I have to figure out how to resample the two. All
of my attempts at resampling video _and_ audio have both failed
miserably to date. I really only need one of those to work to get
smooth video+audio, but both would be nice so the user can decide
what's more important to them.

I don't care to add 2xSaI. I'm planning on redoing the filter stuff
soon to support 32-bit output for Xv, so if someone wants to add 2xSaI
support to bsnes after that, I'll add it in. Otherwise, HQ2x is
superior and Scale2x looks about the same, yet is way faster.

 Regarding the IPS thing, exactly. As I said, IPS is a bad format. You
can't tell if you need to patch against a headered or unheadered ROM
unless you read the documentation that fuckheads like Cowering remove
in their ROM sets ("at least it's already prepatched"), or try
patching twice to see which one works. UPS will eliminate both of
these problems. Readmes will be included inside the patches, and UPS
will work regardless if your ROM has a header or not. It will also be
reversible. It'll be better in every regard over IPS, so I have no
reason to support IPS.

 Lastly, I don't have any intention of working on fixing DeJap's
patch, regardless of where the problem is, as I have no way to run the
game on my copier. Maybe when and if the last two serious bugs
(Uniracers and Koushien 2) get fixed, I'll take a look at it then.

src/cheat/cheat.cpp

@@ -1,4 +1,5 @@
 #include "../base.h"
+#include "../reader/filereader.h"
 
 Cheat cheat;