Multidevice ASIO output plugin for WinAMP

#pragma once


//  Generic utility namespace for WinAMP modules.

namespace WinAMP
{
#pragma warning( push )
#pragma warning( disable : 4100 )   // unreferenced formal wParam
    #include "WA SDK/Winamp/WA_IPC.h"
#pragma warning( pop )

//  Must be implemented by the specific WinAMP module that receives the handles
// from WinAMP upon startup.
HWND      WinAMPWindowHandle();
HINSTANCE DLLInstanceHandle ();


//  Helpers for controlling WinAMP via Windows messages.
inline LRESULT WAMessage( UINT message, WPARAM wParam = 0, LPARAM lParam = 0 ) { return ::SendMessage( WinAMPWindowHandle(), message, wParam, lParam ); }

struct WAMessages
{
    // (todo) Fill as needed.
    enum
    {
        StopPlayback = 40047
    };
};

inline LRESULT    WACommand( LPARAM command, WPARAM parameter = 0 ) { return WAMessage( WM_WA_IPC, parameter, command ); }
template<typename ReturnType>
inline ReturnType WACommand( LPARAM command, WPARAM parameter = 0 ) { return reinterpret_cast<ReturnType>( WACommand( command, parameter ) ); }

inline char const * GetWinAMPIniPath  () { return WACommand<char const *>( IPC_GETINIFILE         ); }
inline char const * GetIniDirectory   () { return WACommand<char const *>( IPC_GETINIDIRECTORY    ); }
inline char const * GetPluginDirectory() { return WACommand<char const *>( IPC_GETPLUGINDIRECTORY ); }

static char const pluginIniFileName[] = "plugin.ini";

char const * GetPluginIniPath();


template<class Config>
inline bool ReadConfig( Config & config, char const * const iniSection, char const * const iniFile = GetPluginIniPath() )
{
    return ( ::GetPrivateProfileStructA( iniSection, "binaryConfigData", (LPVOID)&config, sizeof( config ), iniFile ) != 0 );
}

template<class Config>
inline bool SaveConfig( Config const & config, char const * const iniSection, char const * const iniFile = GetPluginIniPath() )
{
    return ( ::WritePrivateProfileStructA( iniSection, "binaryConfigData", (LPVOID)&config, sizeof( config ), iniFile ) != 0 );
}

}   // namespace WinAMP