pcsx2/plugins/spu2ghz/dsp.h

57 lines
2.4 KiB
C

//GiGaHeRz's SPU2 Driver
//Copyright (c) 2003-2008, David Quintana <gigaherz@gmail.com>
//
//This library is free software; you can redistribute it and/or
//modify it under the terms of the GNU Lesser General Public
//License as published by the Free Software Foundation; either
//version 2.1 of the License, or (at your option) any later version.
//
//This library is distributed in the hope that it will be useful,
//but WITHOUT ANY WARRANTY; without even the implied warranty of
//MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
//Lesser General Public License for more details.
//
//You should have received a copy of the GNU Lesser General Public
//License along with this library; if not, write to the Free Software
//Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
//
// DSP plugin interface
// notes:
// any window that remains in foreground should optimally pass unused
// keystrokes to the parent (winamp's) window, so that the user
// can still control it. As for storing configuration,
// Configuration data should be stored in <dll directory>\plugin.ini
// (look at the vis plugin for configuration code)
typedef struct winampDSPModule {
char *description; // description
HWND hwndParent; // parent window (filled in by calling app)
HINSTANCE hDllInstance; // instance handle to this DLL (filled in by calling app)
void (*Config)(struct winampDSPModule *this_mod); // configuration dialog (if needed)
int (*Init)(struct winampDSPModule *this_mod); // 0 on success, creates window, etc (if needed)
// modify waveform samples: returns number of samples to actually write
// (typically numsamples, but no more than twice numsamples, and no less than half numsamples)
// numsamples should always be at least 128. should, but I'm not sure
int (*ModifySamples)(struct winampDSPModule *this_mod, short int *samples, int numsamples, int bps, int nch, int srate);
void (*Quit)(struct winampDSPModule *this_mod); // called when unloading
void *userData; // user data, optional
} winampDSPModule;
typedef struct {
int version; // DSP_HDRVER
char *description; // description of library
winampDSPModule* (*getModule)(int); // module retrieval function
} winampDSPHeader;
// exported symbols
typedef winampDSPHeader* (*winampDSPGetHeaderType)();
// header version: 0x20 == 0.20 == winamp 2.0
#define DSP_HDRVER 0x20