winamp/Src/Winamp/VIS.H

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2024-09-24 12:54:57 +00:00
#ifndef NULLSOFT_VISH
#define NULLSOFT_VISH
// Visualization plugin interface
typedef struct winampVisModule
{
char *description; // description of module
HWND hwndParent; // parent window (filled in by calling app)
HINSTANCE hDllInstance; // instance handle to this DLL (filled in by calling app)
int sRate; // sample rate (filled in by calling app)
int nCh; // number of channels (filled in...)
int latencyMs; // latency from call of RenderFrame to actual drawing
// (calling app looks at this value when getting data)
int delayMs; // delay between calls in ms
// the data is filled in according to the respective Nch entry
int spectrumNch;
int waveformNch;
unsigned char spectrumData[2][576];
unsigned char waveformData[2][576];
void (__cdecl *Config)(struct winampVisModule *this_mod); // configuration dialog
int (__cdecl *Init)(struct winampVisModule *this_mod); // 0 on success, creates window, etc
int (__cdecl *Render)(struct winampVisModule *this_mod); // returns 0 if successful, 1 if vis should end
void (__cdecl *Quit)(struct winampVisModule *this_mod); // call when done
void *userData; // user data, optional
} winampVisModule;
typedef struct
{
int version; // VID_HDRVER
char *description; // description of library
winampVisModule* (__cdecl *getModule)(int);
} winampVisHeader;
// exported symbols
#ifdef USE_VIS_HDR_HWND
typedef winampVisHeader* (__cdecl *winampVisGetHeaderType)(HWND);
// version of current module (0x102 == 1.02)
#define VIS_HDRVER 0x102
#else
typedef winampVisHeader* (__cdecl *winampVisGetHeaderType)();
// version of current module (0x101 == 1.01)
#define VIS_HDRVER 0x101
#endif
// Version note:
//
// Updated to 1.02 for 5.36+
// Added passing of Winamp's main hwnd in the call to the exported winampVisGetHeader()
// which allows for primarily the use of localisation features with the bundled plugins.
// If you want to use the new version then either you can edit you version of vis.h or
// you can add USE_VIS_HRD_HWND to your project's defined list or before use of vis.h
//
// Miscellaneous notes:
// * Any window that remains in foreground should optimally pass keystrokes to the parent
// (Winamp's) window, so that the user can still control it unless escape is pressed or
// some option key specific to the visualization is pressed.
// * Storing configuration can be done any where though it's recommended to use the api
// IPC_GETINIDIRECTORY as the basis of the path to save things to e.g. INIDIR\plugins\plugin.ini
// * ints are 32 bits and structure members are aligned on the default 8 byte boundaries.
// These are the return values to be used with the uninstall plugin export function:
// __declspec(dllexport) int __cdecl winampUninstallPlugin(HINSTANCE hDllInst, HWND hwndDlg, int param)
// which determines if Winamp can uninstall the plugin immediately or on winamp restart.
// If this is not exported then Winamp will assume an uninstall with reboot is the only way.
// Note: visualization plugins are always uninstalled without a reboot (unlike other plugin types).
//
#define VIS_PLUGIN_UNINSTALL_NOW 0x0
//
// Uninstall support was added from 5.0+ and uninstall now support from 5.5+ though note
// that it is down to you to ensure that if uninstall now is returned that it will not
// cause a crash i.e. don't use if you've been subclassing the main window.
//
// The HWND passed in the calling of winampUninstallPlugin(..) is the preference page HWND.
//
// For a vis plugin to be correctly detected by Winamp you need to ensure that
// the exported winampVisGetHeader(..) is exported as an undecorated function
// e.g.
// #ifdef __cplusplus
// extern "C" {
// #endif
// __declspec(dllexport) winampVisHeader * __cdecl winampVisGetHeader(){ return &plugin; }
// #ifdef __cplusplus
// }
// #endif
//
#endif