ACMTHUNK.C
//==========================================================================;
//
// THIS CODE AND INFORMATION IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY
// KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE
// IMPLIED WARRANTIES OF MERCHANTABILITY AND/OR FITNESS FOR A PARTICULAR
// PURPOSE.
//
// Copyright 1992 - 1998 Microsoft Corporation. All Rights Reserved.
//
//--------------------------------------------------------------------------;
//
// acmthunk.c
//
// Description:
// This is a thunk layer to the Audio Compression Manager. It's
// purpose is to allow an application to use the ACM only if it is
// available (like under Win 3.1 and NT where the ACM may or may not
// be installed).
//
// There are two requirements for using this module:
//
// 1. Compile and link with this module before linking to MMSYSTEM.LIB.
// Do *NOT* link with MSACM.LIB.
//
// 2. Before calling any other functions in ACM function set, call
// acmThunkInitialize(). This will cause all dyna-linking to occur.
//
// 3. Before exiting your application, call acmThunkTerminate().
// This will unlink to the ACM and free allocated resources.
//
// NOTE! this could be written more efficiently in Assembly by doing
// a jump to the correct API in the ACM, but this would not be
// portable (easily) on NT. So the arguments will be repushed on the
// stack.. such is life.
//
//==========================================================================;
#include <windows.h>
#include <windowsx.h>
#include <mmsystem.h>
#include <mmreg.h>
#include <msacm.h>
//
//
//
#ifdef WIN32
#define BCODE
#else
#define BCODE _based(_segname("_CODE"))
#endif
//==========================================================================;
//
// Prototypes and String Defines for Dyna-Linking to the ACM
//
//
//==========================================================================;
#define ACMINST_NOT_PRESENT NULL
#define ACMINST_TRY_LINKING (HINSTANCE)(UINT)-1
static HINSTANCE ghinstAcm = ACMINST_TRY_LINKING;
#ifdef WIN32
TCHAR BCODE gszAcmModuleName[] = TEXT("MSACM32.DLL");
#else
char BCODE gszAcmModuleName[] = "MSACM.DLL";
#endif
FARPROC *gpafnAcmFunctions;
PSTR BCODE gapszAcmFunctions[] =
{
"acmGetVersion",
"acmMetrics",
"acmDriverEnum",
#ifdef WIN32
"acmDriverDetailsW",
"acmDriverDetailsA",
#else
"acmDriverDetails",
#endif
#ifdef WIN32
"acmDriverAddW",
"acmDriverAddA",
#else
"acmDriverAdd",
#endif
"acmDriverRemove",
"acmDriverOpen",
"acmDriverClose",
"acmDriverMessage",
"acmDriverID",
"acmDriverPriority",
#ifdef WIN32
"acmFormatTagDetailsW",
"acmFormatTagDetailsA",
#else
"acmFormatTagDetails",
#endif
#ifdef WIN32
"acmFormatTagEnumW",
"acmFormatTagEnumA",
#else
"acmFormatTagEnum",
#endif
#ifdef WIN32
"acmFormatChooseW",
"acmFormatChooseA",
#else
"acmFormatChoose",
#endif
#ifdef WIN32
"acmFormatDetailsW",
"acmFormatDetailsA",
#else
"acmFormatDetails",
#endif
#ifdef WIN32
"acmFormatEnumW",
"acmFormatEnumA",
#else
"acmFormatEnum",
#endif
"acmFormatSuggest",
#ifdef WIN32
"acmFilterTagDetailsW",
"acmFilterTagDetailsA",
#else
"acmFilterTagDetails",
#endif
#ifdef WIN32
"acmFilterTagEnumW",
"acmFilterTagEnumA",
#else
"acmFilterTagEnum",
#endif
#ifdef WIN32
"acmFilterChooseW",
"acmFilterChooseA",
#else
"acmFilterChoose",
#endif
#ifdef WIN32
"acmFilterDetailsW",
"acmFilterDetailsA",
#else
"acmFilterDetails",
#endif
#ifdef WIN32
"acmFilterEnumW",
"acmFilterEnumA",
#else
"acmFilterEnum",
#endif
"acmStreamOpen",
"acmStreamClose",
"acmStreamSize",
"acmStreamConvert",
"acmStreamReset",
"acmStreamPrepareHeader",
"acmStreamUnprepareHeader"
};
#ifdef WIN32
//
// For Win32
//
enum
{
ACMTHUNK_GETVERSION = 0,
ACMTHUNK_METRICS,
ACMTHUNK_DRIVERENUM,
ACMTHUNK_DRIVERDETAILSW,
ACMTHUNK_DRIVERDETAILSA,
ACMTHUNK_DRIVERADDW,
ACMTHUNK_DRIVERADDA,
ACMTHUNK_DRIVERREMOVE,
ACMTHUNK_DRIVEROPEN,
ACMTHUNK_DRIVERCLOSE,
ACMTHUNK_DRIVERMESSAGE,
ACMTHUNK_DRIVERID,
ACMTHUNK_DRIVERPRIORITY,
ACMTHUNK_FORMATTAGDETAILSW,
ACMTHUNK_FORMATTAGDETAILSA,
ACMTHUNK_FORMATTAGENUMW,
ACMTHUNK_FORMATTAGENUMA,
ACMTHUNK_FORMATCHOOSEW,
ACMTHUNK_FORMATCHOOSEA,
ACMTHUNK_FORMATDETAILSW,
ACMTHUNK_FORMATDETAILSA,
ACMTHUNK_FORMATENUMW,
ACMTHUNK_FORMATENUMA,
ACMTHUNK_FORMATSUGGEST,
ACMTHUNK_FILTERTAGDETAILSW,
ACMTHUNK_FILTERTAGDETAILSA,
ACMTHUNK_FILTERTAGENUMW,
ACMTHUNK_FILTERTAGENUMA,
ACMTHUNK_FILTERCHOOSEW,
ACMTHUNK_FILTERCHOOSEA,
ACMTHUNK_FILTERDETAILSW,
ACMTHUNK_FILTERDETAILSA,
ACMTHUNK_FILTERENUMW,
ACMTHUNK_FILTERENUMA,
ACMTHUNK_STREAMOPEN,
ACMTHUNK_STREAMCLOSE,
ACMTHUNK_STREAMSIZE,
ACMTHUNK_STREAMCONVERT,
ACMTHUNK_STREAMRESET,
ACMTHUNK_STREAMPREPAREHEADER,
ACMTHUNK_STREAMUNPREPAREHEADER,
ACMTHUNK_MAX_FUNCTIONS
};
#ifdef _UNICODE
#define ACMTHUNK_DRIVERDETAILS ACMTHUNK_DRIVERDETAILSW
#define ACMTHUNK_DRIVERADD ACMTHUNK_DRIVERADDW
#define ACMTHUNK_FORMATTAGDETAILS ACMTHUNK_FORMATTAGDETAILSW
#define ACMTHUNK_FORMATTAGENUM ACMTHUNK_FORMATTAGENUMW
#define ACMTHUNK_FORMATCHOOSE ACMTHUNK_FORMATCHOOSEW
#define ACMTHUNK_FORMATDETAILS ACMTHUNK_FORMATDETAILSW
#define ACMTHUNK_FORMATENUM ACMTHUNK_FORMATENUMW
#define ACMTHUNK_FILTERTAGDETAILS ACMTHUNK_FILTERTAGDETAILSW
#define ACMTHUNK_FILTERTAGENUM ACMTHUNK_FILTERTAGENUMW
#define ACMTHUNK_FILTERCHOOSE ACMTHUNK_FILTERCHOOSEW
#define ACMTHUNK_FILTERDETAILS ACMTHUNK_FILTERDETAILSW
#define ACMTHUNK_FILTERENUM ACMTHUNK_FILTERENUMW
#else
#define ACMTHUNK_DRIVERDETAILS ACMTHUNK_DRIVERDETAILSA
#define ACMTHUNK_DRIVERADD ACMTHUNK_DRIVERADDA
#define ACMTHUNK_FORMATTAGDETAILS ACMTHUNK_FORMATTAGDETAILSA
#define ACMTHUNK_FORMATTAGENUM ACMTHUNK_FORMATTAGENUMA
#define ACMTHUNK_FORMATCHOOSE ACMTHUNK_FORMATCHOOSEA
#define ACMTHUNK_FORMATDETAILS ACMTHUNK_FORMATDETAILSA
#define ACMTHUNK_FORMATENUM ACMTHUNK_FORMATENUMA
#define ACMTHUNK_FILTERTAGDETAILS ACMTHUNK_FILTERTAGDETAILSA
#define ACMTHUNK_FILTERTAGENUM ACMTHUNK_FILTERTAGENUMA
#define ACMTHUNK_FILTERCHOOSE ACMTHUNK_FILTERCHOOSEA
#define ACMTHUNK_FILTERDETAILS ACMTHUNK_FILTERDETAILSA
#define ACMTHUNK_FILTERENUM ACMTHUNK_FILTERENUMA
#endif
#else // if Win32
//
// For Win16
//
enum
{
ACMTHUNK_GETVERSION = 0,
ACMTHUNK_METRICS,
ACMTHUNK_DRIVERENUM,
ACMTHUNK_DRIVERDETAILS,
ACMTHUNK_DRIVERADD,
ACMTHUNK_DRIVERREMOVE,
ACMTHUNK_DRIVEROPEN,
ACMTHUNK_DRIVERCLOSE,
ACMTHUNK_DRIVERMESSAGE,
ACMTHUNK_DRIVERID,
ACMTHUNK_DRIVERPRIORITY,
ACMTHUNK_FORMATTAGDETAILS,
ACMTHUNK_FORMATTAGENUM,
ACMTHUNK_FORMATCHOOSE,
ACMTHUNK_FORMATDETAILS,
ACMTHUNK_FORMATENUM,
ACMTHUNK_FORMATSUGGEST,
ACMTHUNK_FILTERTAGDETAILS,
ACMTHUNK_FILTERTAGENUM,
ACMTHUNK_FILTERCHOOSE,
ACMTHUNK_FILTERDETAILS,
ACMTHUNK_FILTERENUM,
ACMTHUNK_STREAMOPEN,
ACMTHUNK_STREAMCLOSE,
ACMTHUNK_STREAMSIZE,
ACMTHUNK_STREAMCONVERT,
ACMTHUNK_STREAMRESET,
ACMTHUNK_STREAMPREPAREHEADER,
ACMTHUNK_STREAMUNPREPAREHEADER,
ACMTHUNK_MAX_FUNCTIONS
};
#endif// if WIN32 else
#define ACMTHUNK_SIZE_TABLE_BYTES (ACMTHUNK_MAX_FUNCTIONS * sizeof(FARPROC))
//==========================================================================;
//
//
//
//==========================================================================;
//--------------------------------------------------------------------------;
//
// BOOL acmThunkInitialize
//
// Description:
//
//
// Arguments:
// None.
//
// Return (BOOL):
//
//--------------------------------------------------------------------------;
BOOL FAR PASCAL acmThunkInitialize
(
void
)
{
DWORD (ACMAPI *pfnAcmGetVersion)
(
void
);
UINT fuErrorMode;
DWORD dwVersion;
UINT u;
//
// if we have already linked to the API's, then just succeed...
//
if (NULL != gpafnAcmFunctions)
{
//
// someone isn't satisfied with calling this API only once?
//
return (TRUE);
}
//
// if we have already tried to link to the ACM, then fail this
// call--it isn't present.
//
if (ACMINST_TRY_LINKING != ghinstAcm)
return (FALSE);
//
// try to get a handle on the ACM--if we cannot do this, then fail
//
fuErrorMode = SetErrorMode(SEM_NOOPENFILEERRORBOX);
ghinstAcm = LoadLibrary(gszAcmModuleName);
SetErrorMode(fuErrorMode);
if (ghinstAcm < (HINSTANCE)HINSTANCE_ERROR)
{
ghinstAcm = ACMINST_NOT_PRESENT;
return (FALSE);
}
(FARPROC)pfnAcmGetVersion = GetProcAddress(ghinstAcm, gapszAcmFunctions[ACMTHUNK_GETVERSION]);
if (NULL == pfnAcmGetVersion)
{
FreeLibrary(ghinstAcm);
ghinstAcm = ACMINST_NOT_PRESENT;
return (FALSE);
}
//
// allocate our array of function pointers to the ACM... note that
// this is dynamically allocated so if the ACM is _not_ present,
// then this code and data takes up very little space.
//
gpafnAcmFunctions = (FARPROC *)LocalAlloc(LPTR, ACMTHUNK_SIZE_TABLE_BYTES);
if (NULL == gpafnAcmFunctions)
{
FreeLibrary(ghinstAcm);
ghinstAcm = ACMINST_NOT_PRESENT;
return (FALSE);
}
gpafnAcmFunctions[ACMTHUNK_GETVERSION] = (FARPROC)pfnAcmGetVersion;
//
// if the version of the ACM is *NOT* V2.00 or greater, then
// all other API's are unavailable--so don't waste time trying
// to link to them.
//
dwVersion = (* pfnAcmGetVersion)();
if (0x0200 > HIWORD(dwVersion))
{
return (TRUE);
}
//
// yipee! the ACM V2.00 or greater appears to be installed and
// happy with us--so link to the rest of the nifty cool API's.
//
// start at index 1 since we already linked to acmGetVersion above
//
for (u = 1; u < ACMTHUNK_MAX_FUNCTIONS; u++)
{
gpafnAcmFunctions[u] = GetProcAddress(ghinstAcm, gapszAcmFunctions[u]);
}
//
// finally, return success
//
return (TRUE);
} // acmThunkInitialize()
//--------------------------------------------------------------------------;
//
// BOOL acmThunkTerminate
//
// Description:
//
//
// Arguments:
// None.
//
// Return (BOOL):
//
//--------------------------------------------------------------------------;
BOOL FAR PASCAL acmThunkTerminate
(
void
)
{
//
//
//
if (NULL != gpafnAcmFunctions)
{
LocalFree((HLOCAL)gpafnAcmFunctions);
gpafnAcmFunctions = NULL;
FreeLibrary(ghinstAcm);
ghinstAcm = ACMINST_TRY_LINKING;
}
return (TRUE);
} // acmThunkTerminate()
//==========================================================================;
//
// General Information API's
//
//
//==========================================================================;
DWORD ACMAPI acmGetVersion
(
void
)
{
DWORD (ACMAPI *pfnAcmGetVersion)
(
void
);
DWORD dwVersion;
if (NULL == gpafnAcmFunctions)
return (0L);
(FARPROC)pfnAcmGetVersion = gpafnAcmFunctions[ACMTHUNK_GETVERSION];
if (NULL == pfnAcmGetVersion)
return (0L);
dwVersion = (* pfnAcmGetVersion)();
return (dwVersion);
} // acmGetVersion()
//--------------------------------------------------------------------------;
//--------------------------------------------------------------------------;
MMRESULT ACMAPI acmMetrics
(
HACMOBJ hao,
UINT uMetric,
LPVOID pMetric
)
{
MMRESULT (ACMAPI *pfnAcmMetrics)
(
HACMOBJ hao,
UINT uMetric,
LPVOID pMetric
);
MMRESULT mmr;
if (NULL == gpafnAcmFunctions)
return (MMSYSERR_ERROR);
(FARPROC)pfnAcmMetrics = gpafnAcmFunctions[ACMTHUNK_METRICS];
if (NULL == pfnAcmMetrics)
return (MMSYSERR_ERROR);
mmr = (* pfnAcmMetrics)(hao, uMetric, pMetric);
return (mmr);
} // acmMetrics()
//==========================================================================;
//
// ACM Driver Management API's
//
//
//==========================================================================;
//--------------------------------------------------------------------------;
//--------------------------------------------------------------------------;
MMRESULT ACMAPI acmDriverEnum
(
ACMDRIVERENUMCB fnCallback,
DWORD dwInstance,
DWORD fdwEnum
)
{
MMRESULT (ACMAPI *pfnAcmDriverEnum)
(
ACMDRIVERENUMCB fnCallback,
DWORD dwInstance,
DWORD fdwEnum
);
MMRESULT mmr;
if (NULL == gpafnAcmFunctions)
return (MMSYSERR_ERROR);
(FARPROC)pfnAcmDriverEnum = gpafnAcmFunctions[ACMTHUNK_DRIVERENUM];
if (NULL == pfnAcmDriverEnum)
return (MMSYSERR_ERROR);
mmr = (* pfnAcmDriverEnum)(fnCallback, dwInstance, fdwEnum);
return (mmr);
}
//--------------------------------------------------------------------------;
//--------------------------------------------------------------------------;
MMRESULT ACMAPI acmDriverDetails
(
HACMDRIVERID hadid,
LPACMDRIVERDETAILS padd,
DWORD fdwDetails
)
{
MMRESULT (ACMAPI *pfnAcmDriverDetails)
(
HACMDRIVERID hadid,
LPACMDRIVERDETAILS padd,
DWORD fdwDetails
);
MMRESULT mmr;
if (NULL == gpafnAcmFunctions)
return (MMSYSERR_ERROR);
(FARPROC)pfnAcmDriverDetails = gpafnAcmFunctions[ACMTHUNK_DRIVERDETAILS];
if (NULL == pfnAcmDriverDetails)
return (MMSYSERR_ERROR);
mmr = (* pfnAcmDriverDetails)(hadid, padd, fdwDetails);
return (mmr);
}
#ifdef _UNICODE
MMRESULT ACMAPI acmDriverDetailsA
(
HACMDRIVERID hadid,
LPACMDRIVERDETAILSA padd,
DWORD fdwDetails
)
{
MMRESULT (ACMAPI *pfnAcmDriverDetails)
(
HACMDRIVERID hadid,
LPACMDRIVERDETAILSA padd,
DWORD fdwDetails
);
MMRESULT mmr;
if (NULL == gpafnAcmFunctions)
return (MMSYSERR_ERROR);
(FARPROC)pfnAcmDriverDetails = gpafnAcmFunctions[ACMTHUNK_DRIVERDETAILSA];
if (NULL == pfnAcmDriverDetails)
return (MMSYSERR_ERROR);
mmr = (* pfnAcmDriverDetails)(hadid, padd, fdwDetails);
return (mmr);
}
#endif
//--------------------------------------------------------------------------;
//--------------------------------------------------------------------------;
MMRESULT ACMAPI acmDriverAdd
(
LPHACMDRIVERID phadid,
HINSTANCE hinstModule,
LPARAM lParam,
DWORD dwPriority,
DWORD fdwAdd
)
{
MMRESULT (ACMAPI *pfnAcmDriverAdd)
(
LPHACMDRIVERID phadid,
HINSTANCE hinstModule,
LPARAM lParam,
DWORD dwPriority,
DWORD fdwAdd
);
MMRESULT mmr;
if (NULL == gpafnAcmFunctions)
return (MMSYSERR_ERROR);
(FARPROC)pfnAcmDriverAdd = gpafnAcmFunctions[ACMTHUNK_DRIVERADD];
if (NULL == pfnAcmDriverAdd)
return (MMSYSERR_ERROR);
mmr = (* pfnAcmDriverAdd)(phadid, hinstModule, lParam, dwPriority, fdwAdd);
return (mmr);
}
#ifdef _UNICODE
MMRESULT ACMAPI acmDriverAddA
(
LPHACMDRIVERID phadid,
HINSTANCE hinstModule,
LPARAM lParam,
DWORD dwPriority,
DWORD fdwAdd
)
{
MMRESULT (ACMAPI *pfnAcmDriverAdd)
(
LPHACMDRIVERID phadid,
HINSTANCE hinstModule,
LPARAM lParam,
DWORD dwPriority,
DWORD fdwAdd
);
MMRESULT mmr;
if (NULL == gpafnAcmFunctions)
return (MMSYSERR_ERROR);
(FARPROC)pfnAcmDriverAdd = gpafnAcmFunctions[ACMTHUNK_DRIVERADDA];
if (NULL == pfnAcmDriverAdd)
return (MMSYSERR_ERROR);
mmr = (* pfnAcmDriverAdd)(phadid, hinstModule, lParam, dwPriority, fdwAdd);
return (mmr);
}
#endif
//--------------------------------------------------------------------------;
//--------------------------------------------------------------------------;
MMRESULT ACMAPI acmDriverRemove
(
HACMDRIVERID hadid,
DWORD fdwRemove
)
{
MMRESULT (ACMAPI *pfnAcmDriverRemove)
(
HACMDRIVERID hadid,
DWORD fdwRemove
);
MMRESULT mmr;
if (NULL == gpafnAcmFunctions)
return (MMSYSERR_ERROR);
(FARPROC)pfnAcmDriverRemove = gpafnAcmFunctions[ACMTHUNK_DRIVERREMOVE];
if (NULL == pfnAcmDriverRemove)
return (MMSYSERR_ERROR);
mmr = (* pfnAcmDriverRemove)(hadid, fdwRemove);
return (mmr);
}
//--------------------------------------------------------------------------;
//--------------------------------------------------------------------------;
MMRESULT ACMAPI acmDriverOpen
(
LPHACMDRIVER phad,
HACMDRIVERID hadid,
DWORD fdwOpen
)
{
MMRESULT (ACMAPI *pfnAcmDriverOpen)
(
LPHACMDRIVER phad,
HACMDRIVERID hadid,
DWORD fdwOpen
);
MMRESULT mmr;
if (NULL == gpafnAcmFunctions)
return (MMSYSERR_ERROR);
(FARPROC)pfnAcmDriverOpen = gpafnAcmFunctions[ACMTHUNK_DRIVEROPEN];
if (NULL == pfnAcmDriverOpen)
return (MMSYSERR_ERROR);
mmr = (* pfnAcmDriverOpen)(phad, hadid, fdwOpen);
return (mmr);
}
//--------------------------------------------------------------------------;
//--------------------------------------------------------------------------;
MMRESULT ACMAPI acmDriverClose
(
HACMDRIVER had,
DWORD fdwClose
)
{
MMRESULT (ACMAPI *pfnAcmDriverClose)
(
HACMDRIVER had,
DWORD fdwClose
);
MMRESULT mmr;
if (NULL == gpafnAcmFunctions)
return (MMSYSERR_ERROR);
(FARPROC)pfnAcmDriverClose = gpafnAcmFunctions[ACMTHUNK_DRIVERCLOSE];
if (NULL == pfnAcmDriverClose)
return (MMSYSERR_ERROR);
mmr = (* pfnAcmDriverClose)(had, fdwClose);
return (mmr);
}
//--------------------------------------------------------------------------;
//--------------------------------------------------------------------------;
LRESULT ACMAPI acmDriverMessage
(
HACMDRIVER had,
UINT uMsg,
LPARAM lParam1,
LPARAM lParam2
)
{
LRESULT (ACMAPI *pfnAcmDriverMessage)
(
HACMDRIVER had,
UINT uMsg,
LPARAM lParam1,
LPARAM lParam2
);
LRESULT lr;
if (NULL == gpafnAcmFunctions)
return (MMSYSERR_ERROR);
(FARPROC)pfnAcmDriverMessage = gpafnAcmFunctions[ACMTHUNK_DRIVERMESSAGE];
if (NULL == pfnAcmDriverMessage)
return (MMSYSERR_ERROR);
lr = (* pfnAcmDriverMessage)(had, uMsg, lParam1, lParam2);
return (lr);
}
//--------------------------------------------------------------------------;
//--------------------------------------------------------------------------;
MMRESULT ACMAPI acmDriverID
(
HACMOBJ hao,
LPHACMDRIVERID phadid,
DWORD fdwDriverId
)
{
MMRESULT (ACMAPI *pfnAcmDriverId)
(
HACMOBJ hao,
LPHACMDRIVERID phadid,
DWORD fdwDriverId
);
MMRESULT mmr;
if (NULL == gpafnAcmFunctions)
return (MMSYSERR_ERROR);
(FARPROC)pfnAcmDriverId = gpafnAcmFunctions[ACMTHUNK_DRIVERID];
if (NULL == pfnAcmDriverId)
return (MMSYSERR_ERROR);
mmr = (* pfnAcmDriverId)(hao, phadid, fdwDriverId);
return (mmr);
}
//--------------------------------------------------------------------------;
//--------------------------------------------------------------------------;
MMRESULT ACMAPI acmDriverPriority
(
HACMDRIVERID hadid,
DWORD dwPriority,
DWORD fdwPriority
)
{
MMRESULT (ACMAPI *pfnAcmDriverPriority)
(
HACMDRIVERID hadid,
DWORD dwPriority,
DWORD fdwPriority
);
MMRESULT mmr;
if (NULL == gpafnAcmFunctions)
return (MMSYSERR_ERROR);
(FARPROC)pfnAcmDriverPriority = gpafnAcmFunctions[ACMTHUNK_DRIVERPRIORITY];
if (NULL == pfnAcmDriverPriority)
return (MMSYSERR_ERROR);
mmr = (* pfnAcmDriverPriority)(hadid, dwPriority, fdwPriority);
return (mmr);
}
//==========================================================================;
//
// Format Tag Information API's
//
//
//==========================================================================;
//--------------------------------------------------------------------------;
//--------------------------------------------------------------------------;
MMRESULT ACMAPI acmFormatTagDetails
(
HACMDRIVER had,
LPACMFORMATTAGDETAILS paftd,
DWORD fdwDetails
)
{
MMRESULT (ACMAPI *pfnAcmFormatTagDetails)
(
HACMDRIVER had,
LPACMFORMATTAGDETAILS paftd,
DWORD fdwDetails
);
MMRESULT mmr;
if (NULL == gpafnAcmFunctions)
return (MMSYSERR_ERROR);
(FARPROC)pfnAcmFormatTagDetails = gpafnAcmFunctions[ACMTHUNK_FORMATTAGDETAILS];
if (NULL == pfnAcmFormatTagDetails)
return (MMSYSERR_ERROR);
mmr = (* pfnAcmFormatTagDetails)(had, paftd, fdwDetails);
return (mmr);
} // acmFormatTagDetails()
#ifdef _UNICODE
MMRESULT ACMAPI acmFormatTagDetailsA
(
HACMDRIVER had,
LPACMFORMATTAGDETAILSA paftd,
DWORD fdwDetails
)
{
MMRESULT (ACMAPI *pfnAcmFormatTagDetails)
(
HACMDRIVER had,
LPACMFORMATTAGDETAILSA paftd,
DWORD fdwDetails
);
MMRESULT mmr;
if (NULL == gpafnAcmFunctions)
return (MMSYSERR_ERROR);
(FARPROC)pfnAcmFormatTagDetails = gpafnAcmFunctions[ACMTHUNK_FORMATTAGDETAILSA];
if (NULL == pfnAcmFormatTagDetails)
return (MMSYSERR_ERROR);
mmr = (* pfnAcmFormatTagDetails)(had, paftd, fdwDetails);
return (mmr);
} // acmFormatTagDetails()
#endif
//--------------------------------------------------------------------------;
//--------------------------------------------------------------------------;
MMRESULT ACMAPI acmFormatTagEnum
(
HACMDRIVER had,
LPACMFORMATTAGDETAILS paftd,
ACMFORMATTAGENUMCB fnCallback,
DWORD dwInstance,
DWORD fdwEnum
)
{
MMRESULT (ACMAPI *pfnAcmFormatTagEnum)
(
HACMDRIVER had,
LPACMFORMATTAGDETAILS paftd,
ACMFORMATTAGENUMCB fnCallback,
DWORD dwInstance,
DWORD fdwEnum
);
MMRESULT mmr;
if (NULL == gpafnAcmFunctions)
return (MMSYSERR_ERROR);
(FARPROC)pfnAcmFormatTagEnum = gpafnAcmFunctions[ACMTHUNK_FORMATTAGENUM];
if (NULL == pfnAcmFormatTagEnum)
return (MMSYSERR_ERROR);
mmr = (* pfnAcmFormatTagEnum)(had, paftd, fnCallback, dwInstance, fdwEnum);
return (mmr);
} // acmFormatTagEnum()
#ifdef _UNICODE
MMRESULT ACMAPI acmFormatTagEnumA
(
HACMDRIVER had,
LPACMFORMATTAGDETAILSA paftd,
ACMFORMATTAGENUMCBA fnCallback,
DWORD dwInstance,
DWORD fdwEnum
)
{
MMRESULT (ACMAPI *pfnAcmFormatTagEnum)
(
HACMDRIVER had,
LPACMFORMATTAGDETAILSA paftd,
ACMFORMATTAGENUMCBA fnCallback,
DWORD dwInstance,
DWORD fdwEnum
);
MMRESULT mmr;
if (NULL == gpafnAcmFunctions)
return (MMSYSERR_ERROR);
(FARPROC)pfnAcmFormatTagEnum = gpafnAcmFunctions[ACMTHUNK_FORMATTAGENUMA];
if (NULL == pfnAcmFormatTagEnum)
return (MMSYSERR_ERROR);
mmr = (* pfnAcmFormatTagEnum)(had, paftd, fnCallback, dwInstance, fdwEnum);
return (mmr);
} // acmFormatTagEnum()
#endif
//==========================================================================;
//
// Format Information API's
//
//
//==========================================================================;
//--------------------------------------------------------------------------;
//--------------------------------------------------------------------------;
MMRESULT ACMAPI acmFormatChoose
(
LPACMFORMATCHOOSE pafmtc
)
{
MMRESULT (ACMAPI *pfnAcmFormatChoose)
(
LPACMFORMATCHOOSE pafmtc
);
MMRESULT mmr;
if (NULL == gpafnAcmFunctions)
return (MMSYSERR_ERROR);
(FARPROC)pfnAcmFormatChoose = gpafnAcmFunctions[ACMTHUNK_FORMATCHOOSE];
if (NULL == pfnAcmFormatChoose)
return (MMSYSERR_ERROR);
mmr = (* pfnAcmFormatChoose)(pafmtc);
return (mmr);
}
#ifdef _UNICODE
MMRESULT ACMAPI acmFormatChooseA
(
LPACMFORMATCHOOSEA pafmtc
)
{
MMRESULT (ACMAPI *pfnAcmFormatChoose)
(
LPACMFORMATCHOOSEA pafmtc
);
MMRESULT mmr;
if (NULL == gpafnAcmFunctions)
return (MMSYSERR_ERROR);
(FARPROC)pfnAcmFormatChoose = gpafnAcmFunctions[ACMTHUNK_FORMATCHOOSEA];
if (NULL == pfnAcmFormatChoose)
return (MMSYSERR_ERROR);
mmr = (* pfnAcmFormatChoose)(pafmtc);
return (mmr);
}
#endif
//--------------------------------------------------------------------------;
//--------------------------------------------------------------------------;
MMRESULT ACMAPI acmFormatDetails
(
HACMDRIVER had,
LPACMFORMATDETAILS pafd,
DWORD fdwDetails
)
{
MMRESULT (ACMAPI *pfnAcmFormatDetails)
(
HACMDRIVER had,
LPACMFORMATDETAILS pafd,
DWORD fdwDetails
);
MMRESULT mmr;
if (NULL == gpafnAcmFunctions)
return (MMSYSERR_ERROR);
(FARPROC)pfnAcmFormatDetails = gpafnAcmFunctions[ACMTHUNK_FORMATDETAILS];
if (NULL == pfnAcmFormatDetails)
return (MMSYSERR_ERROR);
mmr = (* pfnAcmFormatDetails)(had, pafd, fdwDetails);
return (mmr);
} // acmFormatDetails()
#ifdef _UNICODE
MMRESULT ACMAPI acmFormatDetailsA
(
HACMDRIVER had,
LPACMFORMATDETAILSA pafd,
DWORD fdwDetails
)
{
MMRESULT (ACMAPI *pfnAcmFormatDetails)
(
HACMDRIVER had,
LPACMFORMATDETAILSA pafd,
DWORD fdwDetails
);
MMRESULT mmr;
if (NULL == gpafnAcmFunctions)
return (MMSYSERR_ERROR);
(FARPROC)pfnAcmFormatDetails = gpafnAcmFunctions[ACMTHUNK_FORMATDETAILSA];
if (NULL == pfnAcmFormatDetails)
return (MMSYSERR_ERROR);
mmr = (* pfnAcmFormatDetails)(had, pafd, fdwDetails);
return (mmr);
} // acmFormatDetails()
#endif
//--------------------------------------------------------------------------;
//--------------------------------------------------------------------------;
MMRESULT ACMAPI acmFormatEnum
(
HACMDRIVER had,
LPACMFORMATDETAILS pafd,
ACMFORMATENUMCB fnCallback,
DWORD dwInstance,
DWORD fdwEnum
)
{
MMRESULT (ACMAPI *pfnAcmFormatEnum)
(
HACMDRIVER had,
LPACMFORMATDETAILS pafd,
ACMFORMATENUMCB fnCallback,
DWORD dwInstance,
DWORD fdwEnum
);
MMRESULT mmr;
if (NULL == gpafnAcmFunctions)
return (MMSYSERR_ERROR);
(FARPROC)pfnAcmFormatEnum = gpafnAcmFunctions[ACMTHUNK_FORMATENUM];
if (NULL == pfnAcmFormatEnum)
return (MMSYSERR_ERROR);
mmr = (* pfnAcmFormatEnum)(had, pafd, fnCallback, dwInstance, fdwEnum);
return (mmr);
}
#ifdef _UNICODE
MMRESULT ACMAPI acmFormatEnumA
(
HACMDRIVER had,
LPACMFORMATDETAILSA pafd,
ACMFORMATENUMCBA fnCallback,
DWORD dwInstance,
DWORD fdwEnum
)
{
MMRESULT (ACMAPI *pfnAcmFormatEnum)
(
HACMDRIVER had,
LPACMFORMATDETAILSA pafd,
ACMFORMATENUMCBA fnCallback,
DWORD dwInstance,
DWORD fdwEnum
);
MMRESULT mmr;
if (NULL == gpafnAcmFunctions)
return (MMSYSERR_ERROR);
(FARPROC)pfnAcmFormatEnum = gpafnAcmFunctions[ACMTHUNK_FORMATENUMA];
if (NULL == pfnAcmFormatEnum)
return (MMSYSERR_ERROR);
mmr = (* pfnAcmFormatEnum)(had, pafd, fnCallback, dwInstance, fdwEnum);
return (mmr);
}
#endif
//--------------------------------------------------------------------------;
//--------------------------------------------------------------------------;
MMRESULT ACMAPI acmFormatSuggest
(
HACMDRIVER had,
LPWAVEFORMATEX pwfxSrc,
LPWAVEFORMATEX pwfxDst,
DWORD cbwfxDst,
DWORD fdwSuggest
)
{
MMRESULT (ACMAPI *pfnAcmFormatSuggest)
(
HACMDRIVER had,
LPWAVEFORMATEX pwfxSrc,
LPWAVEFORMATEX pwfxDst,
DWORD cbwfxDst,
DWORD fdwSuggest
);
MMRESULT mmr;
if (NULL == gpafnAcmFunctions)
return (MMSYSERR_ERROR);
(FARPROC)pfnAcmFormatSuggest = gpafnAcmFunctions[ACMTHUNK_FORMATSUGGEST];
if (NULL == pfnAcmFormatSuggest)
return (MMSYSERR_ERROR);
mmr = (* pfnAcmFormatSuggest)(had, pwfxSrc, pwfxDst, cbwfxDst, fdwSuggest);
return (mmr);
}
//==========================================================================;
//
// Filter Tag Information API's
//
//
//==========================================================================;
//--------------------------------------------------------------------------;
//--------------------------------------------------------------------------;
MMRESULT ACMAPI acmFilterTagDetails
(
HACMDRIVER had,
LPACMFILTERTAGDETAILS paftd,
DWORD fdwDetails
)
{
MMRESULT (ACMAPI *pfnAcmFilterTagDetails)
(
HACMDRIVER had,
LPACMFILTERTAGDETAILS paftd,
DWORD fdwDetails
);
MMRESULT mmr;
if (NULL == gpafnAcmFunctions)
return (MMSYSERR_ERROR);
(FARPROC)pfnAcmFilterTagDetails = gpafnAcmFunctions[ACMTHUNK_FILTERTAGDETAILS];
if (NULL == pfnAcmFilterTagDetails)
return (MMSYSERR_ERROR);
mmr = (* pfnAcmFilterTagDetails)(had, paftd, fdwDetails);
return (mmr);
} // acmFilterTagDetails()
#ifdef _UNICODE
MMRESULT ACMAPI acmFilterTagDetailsA
(
HACMDRIVER had,
LPACMFILTERTAGDETAILSA paftd,
DWORD fdwDetails
)
{
MMRESULT (ACMAPI *pfnAcmFilterTagDetails)
(
HACMDRIVER had,
LPACMFILTERTAGDETAILSA paftd,
DWORD fdwDetails
);
MMRESULT mmr;
if (NULL == gpafnAcmFunctions)
return (MMSYSERR_ERROR);
(FARPROC)pfnAcmFilterTagDetails = gpafnAcmFunctions[ACMTHUNK_FILTERTAGDETAILSA];
if (NULL == pfnAcmFilterTagDetails)
return (MMSYSERR_ERROR);
mmr = (* pfnAcmFilterTagDetails)(had, paftd, fdwDetails);
return (mmr);
} // acmFilterTagDetails()
#endif
//--------------------------------------------------------------------------;
//--------------------------------------------------------------------------;
MMRESULT ACMAPI acmFilterTagEnum
(
HACMDRIVER had,
LPACMFILTERTAGDETAILS paftd,
ACMFILTERTAGENUMCB fnCallback,
DWORD dwInstance,
DWORD fdwEnum
)
{
MMRESULT (ACMAPI *pfnAcmFilterTagEnum)
(
HACMDRIVER had,
LPACMFILTERTAGDETAILS paftd,
ACMFILTERTAGENUMCB fnCallback,
DWORD dwInstance,
DWORD fdwEnum
);
MMRESULT mmr;
if (NULL == gpafnAcmFunctions)
return (MMSYSERR_ERROR);
(FARPROC)pfnAcmFilterTagEnum = gpafnAcmFunctions[ACMTHUNK_FILTERTAGENUM];
if (NULL == pfnAcmFilterTagEnum)
return (MMSYSERR_ERROR);
mmr = (* pfnAcmFilterTagEnum)(had, paftd, fnCallback, dwInstance, fdwEnum);
return (mmr);
} // acmFilterTagEnum()
#ifdef _UNICODE
MMRESULT ACMAPI acmFilterTagEnumA
(
HACMDRIVER had,
LPACMFILTERTAGDETAILSA paftd,
ACMFILTERTAGENUMCBA fnCallback,
DWORD dwInstance,
DWORD fdwEnum
)
{
MMRESULT (ACMAPI *pfnAcmFilterTagEnum)
(
HACMDRIVER had,
LPACMFILTERTAGDETAILSA paftd,
ACMFILTERTAGENUMCBA fnCallback,
DWORD dwInstance,
DWORD fdwEnum
);
MMRESULT mmr;
if (NULL == gpafnAcmFunctions)
return (MMSYSERR_ERROR);
(FARPROC)pfnAcmFilterTagEnum = gpafnAcmFunctions[ACMTHUNK_FILTERTAGENUMA];
if (NULL == pfnAcmFilterTagEnum)
return (MMSYSERR_ERROR);
mmr = (* pfnAcmFilterTagEnum)(had, paftd, fnCallback, dwInstance, fdwEnum);
return (mmr);
} // acmFilterTagEnum()
#endif
//==========================================================================;
//
// Filter Information API's
//
//
//==========================================================================;
//--------------------------------------------------------------------------;
//--------------------------------------------------------------------------;
MMRESULT ACMAPI acmFilterChoose
(
LPACMFILTERCHOOSE pafltrc
)
{
MMRESULT (ACMAPI *pfnAcmFilterChoose)
(
LPACMFILTERCHOOSE pafltrc
);
MMRESULT mmr;
if (NULL == gpafnAcmFunctions)
return (MMSYSERR_ERROR);
(FARPROC)pfnAcmFilterChoose = gpafnAcmFunctions[ACMTHUNK_FILTERCHOOSE];
if (NULL == pfnAcmFilterChoose)
return (MMSYSERR_ERROR);
mmr = (* pfnAcmFilterChoose)(pafltrc);
return (mmr);
}
#ifdef _UNICODE
MMRESULT ACMAPI acmFilterChooseA
(
LPACMFILTERCHOOSEA pafltrc
)
{
MMRESULT (ACMAPI *pfnAcmFilterChoose)
(
LPACMFILTERCHOOSEA pafltrc
);
MMRESULT mmr;
if (NULL == gpafnAcmFunctions)
return (MMSYSERR_ERROR);
(FARPROC)pfnAcmFilterChoose = gpafnAcmFunctions[ACMTHUNK_FILTERCHOOSEA];
if (NULL == pfnAcmFilterChoose)
return (MMSYSERR_ERROR);
mmr = (* pfnAcmFilterChoose)(pafltrc);
return (mmr);
}
#endif
//--------------------------------------------------------------------------;
//--------------------------------------------------------------------------;
MMRESULT ACMAPI acmFilterDetails
(
HACMDRIVER had,
LPACMFILTERDETAILS pafd,
DWORD fdwDetails
)
{
MMRESULT (ACMAPI *pfnAcmFilterDetails)
(
HACMDRIVER had,
LPACMFILTERDETAILS pafd,
DWORD fdwDetails
);
MMRESULT mmr;
if (NULL == gpafnAcmFunctions)
return (MMSYSERR_ERROR);
(FARPROC)pfnAcmFilterDetails = gpafnAcmFunctions[ACMTHUNK_FILTERDETAILS];
if (NULL == pfnAcmFilterDetails)
return (MMSYSERR_ERROR);
mmr = (* pfnAcmFilterDetails)(had, pafd, fdwDetails);
return (mmr);
} // acmFilterDetails()
#ifdef _UNICODE
MMRESULT ACMAPI acmFilterDetailsA
(
HACMDRIVER had,
LPACMFILTERDETAILSA pafd,
DWORD fdwDetails
)
{
MMRESULT (ACMAPI *pfnAcmFilterDetails)
(
HACMDRIVER had,
LPACMFILTERDETAILSA pafd,
DWORD fdwDetails
);
MMRESULT mmr;
if (NULL == gpafnAcmFunctions)
return (MMSYSERR_ERROR);
(FARPROC)pfnAcmFilterDetails = gpafnAcmFunctions[ACMTHUNK_FILTERDETAILSA];
if (NULL == pfnAcmFilterDetails)
return (MMSYSERR_ERROR);
mmr = (* pfnAcmFilterDetails)(had, pafd, fdwDetails);
return (mmr);
} // acmFilterDetails()
#endif
//--------------------------------------------------------------------------;
//--------------------------------------------------------------------------;
MMRESULT ACMAPI acmFilterEnum
(
HACMDRIVER had,
LPACMFILTERDETAILS pafd,
ACMFILTERENUMCB fnCallback,
DWORD dwInstance,
DWORD fdwEnum
)
{
MMRESULT (ACMAPI *pfnAcmFilterEnum)
(
HACMDRIVER had,
LPACMFILTERDETAILS pafd,
ACMFILTERENUMCB fnCallback,
DWORD dwInstance,
DWORD fdwEnum
);
MMRESULT mmr;
if (NULL == gpafnAcmFunctions)
return (MMSYSERR_ERROR);
(FARPROC)pfnAcmFilterEnum = gpafnAcmFunctions[ACMTHUNK_FILTERENUM];
if (NULL == pfnAcmFilterEnum)
return (MMSYSERR_ERROR);
mmr = (* pfnAcmFilterEnum)(had, pafd, fnCallback, dwInstance, fdwEnum);
return (mmr);
}
#ifdef _UNICODE
MMRESULT ACMAPI acmFilterEnumA
(
HACMDRIVER had,
LPACMFILTERDETAILSA pafd,
ACMFILTERENUMCBA fnCallback,
DWORD dwInstance,
DWORD fdwEnum
)
{
MMRESULT (ACMAPI *pfnAcmFilterEnum)
(
HACMDRIVER had,
LPACMFILTERDETAILSA pafd,
ACMFILTERENUMCBA fnCallback,
DWORD dwInstance,
DWORD fdwEnum
);
MMRESULT mmr;
if (NULL == gpafnAcmFunctions)
return (MMSYSERR_ERROR);
(FARPROC)pfnAcmFilterEnum = gpafnAcmFunctions[ACMTHUNK_FILTERENUMA];
if (NULL == pfnAcmFilterEnum)
return (MMSYSERR_ERROR);
mmr = (* pfnAcmFilterEnum)(had, pafd, fnCallback, dwInstance, fdwEnum);
return (mmr);
}
#endif
//==========================================================================;
//
// ACM Stream Management API's
//
//
//==========================================================================;
//--------------------------------------------------------------------------;
//--------------------------------------------------------------------------;
MMRESULT ACMAPI acmStreamOpen
(
LPHACMSTREAM phas,
HACMDRIVER had,
LPWAVEFORMATEX pwfxSrc,
LPWAVEFORMATEX pwfxDst,
LPWAVEFILTER pwfltr,
DWORD dwCallback,
DWORD dwInstance,
DWORD fdwOpen
)
{
MMRESULT (ACMAPI *pfnAcmStreamOpen)
(
LPHACMSTREAM phas,
HACMDRIVER had,
LPWAVEFORMATEX pwfxSrc,
LPWAVEFORMATEX pwfxDst,
LPWAVEFILTER pwfltr,
DWORD dwCallback,
DWORD dwInstance,
DWORD fdwOpen
);
MMRESULT mmr;
if (NULL == gpafnAcmFunctions)
return (MMSYSERR_ERROR);
(FARPROC)pfnAcmStreamOpen = gpafnAcmFunctions[ACMTHUNK_STREAMOPEN];
if (NULL == pfnAcmStreamOpen)
return (MMSYSERR_ERROR);
mmr = (* pfnAcmStreamOpen)(phas, had, pwfxSrc, pwfxDst, pwfltr, dwCallback, dwInstance, fdwOpen);
return (mmr);
}
//--------------------------------------------------------------------------;
//--------------------------------------------------------------------------;
MMRESULT ACMAPI acmStreamClose
(
HACMSTREAM has,
DWORD fdwClose
)
{
MMRESULT (ACMAPI *pfnAcmStreamClose)
(
HACMSTREAM has,
DWORD fdwClose
);
MMRESULT mmr;
if (NULL == gpafnAcmFunctions)
return (MMSYSERR_ERROR);
(FARPROC)pfnAcmStreamClose = gpafnAcmFunctions[ACMTHUNK_STREAMCLOSE];
if (NULL == pfnAcmStreamClose)
return (MMSYSERR_ERROR);
mmr = (* pfnAcmStreamClose)(has, fdwClose);
return (mmr);
}
//--------------------------------------------------------------------------;
//--------------------------------------------------------------------------;
MMRESULT ACMAPI acmStreamSize
(
HACMSTREAM has,
DWORD cbInput,
LPDWORD pdwOutputBytes,
DWORD fdwSize
)
{
MMRESULT (ACMAPI *pfnAcmStreamSize)
(
HACMSTREAM has,
DWORD cbInput,
LPDWORD pdwOutputBytes,
DWORD fdwSize
);
MMRESULT mmr;
if (NULL == gpafnAcmFunctions)
return (MMSYSERR_ERROR);
(FARPROC)pfnAcmStreamSize = gpafnAcmFunctions[ACMTHUNK_STREAMSIZE];
if (NULL == pfnAcmStreamSize)
return (MMSYSERR_ERROR);
mmr = (* pfnAcmStreamSize)(has, cbInput, pdwOutputBytes, fdwSize);
return (mmr);
}
//--------------------------------------------------------------------------;
//--------------------------------------------------------------------------;
MMRESULT ACMAPI acmStreamConvert
(
HACMSTREAM has,
LPACMSTREAMHEADER pash,
DWORD fdwConvert
)
{
MMRESULT (ACMAPI *pfnAcmStreamConvert)
(
HACMSTREAM has,
LPACMSTREAMHEADER pash,
DWORD fdwConvert
);
MMRESULT mmr;
if (NULL == gpafnAcmFunctions)
return (MMSYSERR_ERROR);
(FARPROC)pfnAcmStreamConvert = gpafnAcmFunctions[ACMTHUNK_STREAMCONVERT];
if (NULL == pfnAcmStreamConvert)
return (MMSYSERR_ERROR);
mmr = (* pfnAcmStreamConvert)(has, pash, fdwConvert);
return (mmr);
}
//--------------------------------------------------------------------------;
//--------------------------------------------------------------------------;
MMRESULT ACMAPI acmStreamReset
(
HACMSTREAM has,
DWORD fdwReset
)
{
MMRESULT (ACMAPI *pfnAcmStreamReset)
(
HACMSTREAM has,
DWORD fdwReset
);
MMRESULT mmr;
if (NULL == gpafnAcmFunctions)
return (MMSYSERR_ERROR);
(FARPROC)pfnAcmStreamReset = gpafnAcmFunctions[ACMTHUNK_STREAMRESET];
if (NULL == pfnAcmStreamReset)
return (MMSYSERR_ERROR);
mmr = (* pfnAcmStreamReset)(has, fdwReset);
return (mmr);
}
//--------------------------------------------------------------------------;
//--------------------------------------------------------------------------;
MMRESULT ACMAPI acmStreamPrepareHeader
(
HACMSTREAM has,
LPACMSTREAMHEADER pash,
DWORD fdwPrepare
)
{
MMRESULT (ACMAPI *pfnAcmStreamPrepareHeader)
(
HACMSTREAM has,
LPACMSTREAMHEADER pash,
DWORD fdwPrepare
);
MMRESULT mmr;
if (NULL == gpafnAcmFunctions)
return (MMSYSERR_ERROR);
(FARPROC)pfnAcmStreamPrepareHeader = gpafnAcmFunctions[ACMTHUNK_STREAMPREPAREHEADER];
if (NULL == pfnAcmStreamPrepareHeader)
return (MMSYSERR_ERROR);
mmr = (* pfnAcmStreamPrepareHeader)(has, pash, fdwPrepare);
return (mmr);
}
//--------------------------------------------------------------------------;
//--------------------------------------------------------------------------;
MMRESULT ACMAPI acmStreamUnprepareHeader
(
HACMSTREAM has,
LPACMSTREAMHEADER pash,
DWORD fdwUnprepare
)
{
MMRESULT (ACMAPI *pfnAcmStreamUnprepareHeader)
(
HACMSTREAM has,
LPACMSTREAMHEADER pash,
DWORD fdwUnprepare
);
MMRESULT mmr;
if (NULL == gpafnAcmFunctions)
return (MMSYSERR_ERROR);
(FARPROC)pfnAcmStreamUnprepareHeader = gpafnAcmFunctions[ACMTHUNK_STREAMUNPREPAREHEADER];
if (NULL == pfnAcmStreamUnprepareHeader)
return (MMSYSERR_ERROR);
mmr = (* pfnAcmStreamUnprepareHeader)(has, pash, fdwUnprepare);
return (mmr);
}