mirror of
https://github.com/ZDoom/gzdoom-gles.git
synced 2024-11-06 21:11:43 +00:00
108 lines
3.6 KiB
Text
108 lines
3.6 KiB
Text
|
snes_spc Change Log
|
||
|
|
-------------------
|
||
|
|
|
||
|
|
snes_spc 0.9.0
|
||
|
|
--------------
|
||
|
|
- Improved documentation
|
||
|
|
|
||
|
|
- SPC: Added spc_skip() function for quickly seeking in an SPC music
|
||
|
|
file. Runs 3-4x faster than normal playback using the fast DSP (or about
|
||
|
|
43-60X real-time on my 400 MHz Mac).
|
||
|
|
|
||
|
|
- SPC: Added spc_set_tempo() to change tempo of SPC music playback.
|
||
|
|
|
||
|
|
- SPC: Sample generation is now corrected to generate exactly one pair
|
||
|
|
of samples every 32 clocks without exception. Before it could generate a
|
||
|
|
few samples more or less depending on how far ahead or behind DSP was at
|
||
|
|
the moment.
|
||
|
|
|
||
|
|
- SPC: Changed spc_reset() and spc_soft_reset() to also reset output
|
||
|
|
buffer (see spc.h).
|
||
|
|
|
||
|
|
- SPC: Fixed minor timer counting bug.
|
||
|
|
|
||
|
|
- SPC: Stack pointer wrap-around is now emulated (and without any
|
||
|
|
noticeable performance hit).
|
||
|
|
|
||
|
|
- SPC: Runs about 5% faster due to various optimizations.
|
||
|
|
|
||
|
|
- SPC: Found way to make fast DSP register accesses cycle-accurate in
|
||
|
|
most cases, without reducing performance. Allows fast DSP to pass most
|
||
|
|
of my validation tests.
|
||
|
|
|
||
|
|
- DSP: Added surround disable support to fast DSP again.
|
||
|
|
|
||
|
|
- DSP: Improved voice un-muting to take effect immediately on fast DSP.
|
||
|
|
|
||
|
|
- DSP: Noise shift register now starts at 0x4000 instead of 0x4001 as it
|
||
|
|
incorrectly did before.
|
||
|
|
|
||
|
|
- Converted library to C++ code internally. A C interface is still
|
||
|
|
included in spc.h and dsp.h. Note that these are different than the
|
||
|
|
previous interface, so your code will require minor changes:
|
||
|
|
|
||
|
|
Old SPC code New SPC code
|
||
|
|
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
|
||
|
|
#include "spc/spc.h" #include "snes_spc/spc.h"
|
||
|
|
|
||
|
|
snes_spc_t* spc; SNES_SPC* spc;
|
||
|
|
spc = malloc( sizeof (snes_spc_t) ); spc = spc_new();
|
||
|
|
spc_init( spc );
|
||
|
|
|
||
|
|
spc_end_frame( time ); spc_end_frame( spc, time );
|
||
|
|
/* etc. */
|
||
|
|
|
||
|
|
/* done using SPC */ spc_delete( spc );
|
||
|
|
|
||
|
|
|
||
|
|
Old DSP code New DSP code
|
||
|
|
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
|
||
|
|
#include "spc/spc_dsp.h" #include "snes_spc/dsp.h"
|
||
|
|
|
||
|
|
spc_dsp_init( ram ); SPC_DSP* dsp;
|
||
|
|
dsp = spc_dsp_new();
|
||
|
|
spc_dsp_init( dsp, ram );
|
||
|
|
|
||
|
|
spc_dsp_run( count ); spc_dsp_run( dsp, count );
|
||
|
|
/* etc. */
|
||
|
|
|
||
|
|
/* done using DSP */ spc_dsp_delete( dsp );
|
||
|
|
|
||
|
|
|
||
|
|
snes_spc 0.8.0
|
||
|
|
--------------
|
||
|
|
- Added several demos
|
||
|
|
|
||
|
|
- Added high-pass/low-pass filter to better match SNES sound
|
||
|
|
|
||
|
|
- Added save state functionality for SPC and accurate DSP (but not fast
|
||
|
|
DSP)
|
||
|
|
|
||
|
|
- Added emulation of reset switch on NES (soft reset)
|
||
|
|
|
||
|
|
- Made source more compatible with pre-C99 compilers by eliminating
|
||
|
|
mid-block declarations
|
||
|
|
|
||
|
|
- SPC: Many S-SMP accuracy improvements, mostly in memory access times
|
||
|
|
|
||
|
|
- SPC: S-SMP speed improvements
|
||
|
|
|
||
|
|
- SPC: Added SPC load/save functions and KON checking to help trim
|
||
|
|
silence from beginning
|
||
|
|
|
||
|
|
- SPC: Changed spc_init() to have you allocate most of the memory used
|
||
|
|
by the library so you have more control over it
|
||
|
|
|
||
|
|
- DSP: New highly accurate DSP and faster version derived from same code
|
||
|
|
|
||
|
|
- DSP: Changed prefix from dsp_ to spc_dsp_. Your DSP code will require
|
||
|
|
changes.
|
||
|
|
|
||
|
|
- DSP: Removed surround disable and gain. Gain can now be done with the
|
||
|
|
dsp_filter module, and surround disable will probably only be
|
||
|
|
implemented in the fast DSP at some point.
|
||
|
|
|
||
|
|
- DSP: Changed interface to work in clocks rather than samples,
|
||
|
|
necessary for the new accurate DSP. Sample output is now done with
|
||
|
|
separate functions. Your DSP code will require changes.
|