dolphin/Branches/MusicMod/Player/Src/Winamp/Dsp.h

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#ifndef WINAMP_DSP_H
#define WINAMP_DSP_H
#include <windows.h>
// 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
#endif // WINAMP_DSP_H