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windows-server-2003/multimedia/media/winmm/mmwow32.c

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/******************************Module*Header*******************************\
* Module Name: mmwow32.c
*
* This file thunks for the Multi-Media functions.
*
* Created: 1-Jul-1993
* Author: Stephen Estrop [StephenE]
*
* Copyright (c) 1993-1999 Microsoft Corporation
\**************************************************************************/
#define NO_GDI
#ifndef WIN32
#define WIN32
#endif
#include <nt.h>
#include <ntrtl.h>
#include <nturtl.h>
#include "winmmi.h"
#define _INC_ALL_WOWSTUFF
#include "mmwow32.h"
#include "mmwowcb.h"
// #define TELL_THE_TRUTH
#define MIN_TIME_PERIOD_WE_RETURN 1
#if DBG
/*
** ----------------------------------------------------------------
** Debugging, Profiling and Tracing variables.
** ----------------------------------------------------------------
*/
int TraceAux = 0;
int TraceJoy = 0;
int TraceTime = 0;
int TraceMix = 0;
int TraceWaveOut = 0;
int TraceWaveIn = 0;
int TraceMidiOut = 0;
int TraceMidiIn = 0;
int DebugLevel = 0;
int AllocWaveCount;
int AllocMidiCount;
#endif
#ifndef _WIN64
PCALLBACK_DATA pCallBackData; // A 32 bit ptr to the 16 bit callback data
CRITICAL_SECTION mmCriticalSection;
TIMECAPS g_TimeCaps32;
LPCALL_ICA_HW_INTERRUPT GenerateInterrupt;
LPGETVDMPOINTER GetVDMPointer;
LPWOWHANDLE32 lpWOWHandle32;
LPWOWHANDLE16 lpWOWHandle16;
DWORD
NotifyCallbackData(
UINT uDevID,
UINT uMsg,
DWORD dwInstance,
DWORD dwParam1,
VPCALLBACK_DATA parg16
);
BOOL APIENTRY
WOW32ResolveMultiMediaHandle(
UINT uHandleType,
UINT uMappingDirection,
WORD wHandle16_In,
LPWORD lpwHandle16_Out,
DWORD dwHandle32_In,
LPDWORD lpdwHandle32_Out
);
/*
** Constants for use with WOW32ResolveMultiMediaHandle
*/
#define WOW32_DIR_16IN_32OUT 0x0001
#define WOW32_DIR_32IN_16OUT 0x0002
#define WOW32_WAVEIN_HANDLE 0x0003
#define WOW32_WAVEOUT_HANDLE 0x0004
#define WOW32_MIDIOUT_HANDLE 0x0005
#define WOW32_MIDIIN_HANDLE 0x0006
/*
** Constans for auxOutMessage, waveInMessage, waveOutMessage, midiInMessage
** and midiOutMessage.
*/
#define DRV_BUFFER_LOW (DRV_USER - 0x1000) // 0x3000
#define DRV_BUFFER_USER (DRV_USER - 0x0800) // 0x3800
#define DRV_BUFFER_HIGH (DRV_USER - 0x0001) // 0x3FFF
/******************************Public*Routine******************************\
* NotifyCallbackData
*
* This function is called by the 16 bit mmsystem.dll to notify us of the
* address of the callback data structure. The callback data structure
* has been paged locked so that it can be accessed at interrupt time, this
* also means that we can safely keep a 32 bit pointer to the data.
*
* History:
* 22-11-93 - StephenE - Created
*
\**************************************************************************/
DWORD
NotifyCallbackData(
UINT uDevID,
UINT uMsg,
DWORD dwInstance,
DWORD dwParam1,
VPCALLBACK_DATA parg16
)
{
HMODULE hModNTVDM;
if ( parg16 ) {
InitializeCriticalSection( &mmCriticalSection );
hModNTVDM = GetModuleHandleW( (LPCWSTR)L"NTVDM.EXE" );
if ( hModNTVDM ) {
*(FARPROC *)&GenerateInterrupt =
GetProcAddress( hModNTVDM, "call_ica_hw_interrupt" );
}
timeGetDevCaps( &g_TimeCaps32, sizeof(g_TimeCaps32) );
#if !defined(i386)
/*
** Although the Risc PC's support a uPeriodMin of 1ms, WOW does not
** seem capable of delivering interrupts at that rate on non
** intel platforms.
*/
g_TimeCaps32.wPeriodMin = 10;
#endif
}
else {
DeleteCriticalSection( &mmCriticalSection );
}
dprintf1(( "Notified of callback address %X", parg16 ));
pCallBackData = GETVDMPTR( parg16 );
return 0L;
}
/******************************Public*Routine******************************\
* wod32Message
*
* Thunks WODM_Xxxx messages
*
* The dwInstance field is used to save the 32 bit version of the decives
* handle. So for example a WODM_PAUSE message can be thunked thus.
* case WODM_PAUSE:
* return waveOutPause( (HWAVEOUT)dwInstance );
*
*
*
* History:
* 22-11-93 - StephenE - Created
*
\**************************************************************************/
DWORD WINAPI
wod32Message(
UINT uDeviceID,
UINT uMessage,
DWORD dwInstance,
DWORD dwParam1,
DWORD dwParam2
)
{
#if DBG
static MSG_NAME name_map[] = {
WODM_GETNUMDEVS, "WODM_GETNUMDEVS",
WODM_GETDEVCAPS, "WODM_GETDEVCAPS",
WODM_OPEN, "WODM_OPEN",
WODM_CLOSE, "WODM_CLOSE",
WODM_PREPARE, "WODM_PREPARE",
WODM_UNPREPARE, "WODM_UNPREPARE",
WODM_WRITE, "WODM_WRITE",
WODM_PAUSE, "WODM_PAUSE",
WODM_RESTART, "WODM_RESTART",
WODM_RESET, "WODM_RESET",
WODM_GETPOS, "WODM_GETPOS",
WODM_GETPITCH, "WODM_GETPITCH",
WODM_SETPITCH, "WODM_SETPITCH",
WODM_GETVOLUME, "WODM_GETVOLUME",
WODM_SETVOLUME, "WODM_SETVOLUME",
WODM_GETPLAYBACKRATE, "WODM_GETPLAYBACKRATE",
WODM_SETPLAYBACKRATE, "WODM_SETPLAYBACKRATE",
WODM_BREAKLOOP, "WODM_BREAKLOOP",
WODM_BUSY, "WODM_BUSY",
WODM_MAPPER_STATUS, "WODM_MAPPER_STATUS"
};
int i;
int n;
#endif
static DWORD dwNumWaveOutDevs;
DWORD dwRet = MMSYSERR_NOTSUPPORTED;
DWORD dwTmp;
DWORD UNALIGNED *lpdwTmp;
WAVEOUTCAPSA woCaps;
MMTIME mmTime32;
#if DBG
for( i = 0, n = sizeof(name_map) / sizeof(name_map[0]); i < n; i++ ) {
if ( name_map[i].uMsg == uMessage ) {
break;
}
}
if ( i != n ) {
trace_waveout(( "wod32Message( 0x%X, %s, 0x%X, 0x%X, 0x%X)",
uDeviceID, name_map[i].lpstrName, dwInstance,
dwParam1, dwParam2 ));
}
else {
trace_waveout(( "wod32Message( 0x%X, 0x%X, 0x%X, 0x%X, 0x%X)",
uDeviceID, uMessage, dwInstance,
dwParam1, dwParam2 ));
}
#endif
/*
** Make sure that we are consistent with the WAVE_MAPPER
*/
if ( LOWORD(uDeviceID) == 0xFFFF ) {
uDeviceID = (UINT)-1;
}
switch ( uMessage ) {
case WODM_GETNUMDEVS:
dwRet = waveOutGetNumDevs();
break;
case WODM_OPEN:
dwRet = ThunkCommonWaveOpen( WAVE_OUT_DEVICE, uDeviceID, dwParam1,
dwParam2, dwInstance );
break;
case WODM_CLOSE:
dwRet = waveOutClose( (HWAVEOUT)dwInstance );
break;
case WODM_BREAKLOOP:
case WODM_PAUSE:
case WODM_RESET:
case WODM_RESTART:
dwRet = waveOutMessage( (HWAVEOUT)dwInstance, uMessage, 0L, 0L );
break;
case WODM_GETDEVCAPS:
// Handle
// Vadimb
if ( 0 == dwInstance ) {
dwRet = waveOutGetDevCapsA(uDeviceID, &woCaps, sizeof(woCaps));
}
else {
dwRet = waveOutMessage((HWAVEOUT)dwInstance,
uMessage,
(DWORD)&woCaps,
sizeof(woCaps));
}
if ( dwRet == MMSYSERR_NOERROR ) {
CopyWaveOutCaps( (LPWAVEOUTCAPS16)GETVDMPTR( dwParam1 ),
&woCaps, dwParam2 );
}
break;
case WODM_GETVOLUME:
/*
** An application might try to get the volume using either
** the device ID (waveOutGetVolume) or a handle to the device
** waveOutMessage( WODM_GETVOLUME...), if the later is the case
** we must also call waveOutMessage as the device ID will not
** necessarily be valid. Same applies for waveOutSetVolume below.
*/
if ( dwInstance == 0 ) {
dwRet = waveOutGetVolume( (HWAVEOUT)uDeviceID, &dwTmp );
}
else {
dwRet = waveOutMessage( (HWAVEOUT)dwInstance, uMessage,
(DWORD)&dwTmp, 0L );
}
lpdwTmp = GETVDMPTR( dwParam1 );
*lpdwTmp = dwTmp;
break;
case WODM_GETPITCH:
case WODM_GETPLAYBACKRATE:
dwRet = waveOutMessage( (HWAVEOUT)dwInstance, uMessage,
(DWORD)&dwTmp, 0L );
lpdwTmp = GETVDMPTR( dwParam1 );
*lpdwTmp = dwTmp;
break;
case WODM_GETPOS:
GetMMTime( (LPMMTIME16)GETVDMPTR( dwParam1 ), &mmTime32 );
dwRet = waveOutGetPosition( (HWAVEOUT)dwInstance, &mmTime32,
sizeof(mmTime32) );
if ( dwRet == MMSYSERR_NOERROR ) {
PutMMTime( (LPMMTIME16)GETVDMPTR( dwParam1 ), &mmTime32 );
}
break;
case WODM_UNPREPARE:
dwRet = ThunkCommonWaveUnprepareHeader( (HWAVE)dwInstance, dwParam1,
WAVE_OUT_DEVICE );
break;
case WODM_PREPARE:
dwRet = ThunkCommonWavePrepareHeader( (HWAVE)dwInstance, dwParam1,
WAVE_OUT_DEVICE );
break;
case WODM_SETVOLUME:
/*
** An application might try to set the volume using either
** the device ID (waveOutSetVolume) or a handle to the device
** waveOutMessage( WODM_SETVOLUME...), if the later is the case
** we must also call waveOutMessage as the device ID will not
** necessarily be valid. Same applies for waveOutGetVolume above.
*/
if ( dwInstance == 0 ) {
dwRet = waveOutSetVolume( (HWAVEOUT)uDeviceID, dwParam1 );
}
else {
dwRet = waveOutMessage( (HWAVEOUT)dwInstance, uMessage,
dwParam1, dwParam2 );
}
break;
case WODM_SETPITCH:
case WODM_SETPLAYBACKRATE:
dwRet = waveOutMessage( (HWAVEOUT)dwInstance, uMessage, dwParam1, 0L );
break;
case WODM_WRITE:
dwRet = ThunkCommonWaveReadWrite( WAVE_OUT_DEVICE, dwParam1,
dwParam2, dwInstance );
break;
case WODM_MAPPER_STATUS:
{
WAVEFORMATEX waveFmtEx;
switch ( dwParam1 ) {
case WAVEOUT_MAPPER_STATUS_DEVICE:
case WAVEOUT_MAPPER_STATUS_MAPPED:
dwRet = waveOutMessage( (HWAVEOUT)dwInstance, uMessage,
dwParam1, (DWORD)&dwTmp );
lpdwTmp = GETVDMPTR( dwParam2 );
*lpdwTmp = dwTmp;
break;
case WAVEOUT_MAPPER_STATUS_FORMAT:
dwRet = waveOutMessage( (HWAVEOUT)dwInstance, uMessage,
dwParam1, (DWORD)&waveFmtEx );
CopyMemory( (LPVOID)GETVDMPTR( dwParam2 ),
(LPVOID)&waveFmtEx, sizeof(WAVEFORMATEX) );
break;
default:
dwRet = MMSYSERR_NOTSUPPORTED;
}
}
break;
default:
if ( uMessage >= DRV_BUFFER_LOW && uMessage <= DRV_BUFFER_HIGH ) {
lpdwTmp = GETVDMPTR( dwParam1 );
}
else {
lpdwTmp = (LPDWORD)dwParam1;
}
dwRet = waveOutMessage( (HWAVEOUT)dwInstance, uMessage,
(DWORD)lpdwTmp, dwParam2 );
break;
}
trace_waveout(( "-> 0x%X", dwRet ));
return dwRet;
}
/******************************Public*Routine******************************\
* wid32Message
*
* Thunks WIDM_Xxxx messages
*
*
* History:
* 22-11-93 - StephenE - Created
*
\**************************************************************************/
DWORD WINAPI
wid32Message(
UINT uDeviceID,
UINT uMessage,
DWORD dwInstance,
DWORD dwParam1,
DWORD dwParam2
)
{
#if DBG
static MSG_NAME name_map[] = {
WIDM_GETNUMDEVS, "WIDM_GETNUMDEVS",
WIDM_GETDEVCAPS, "WIDM_GETDEVCAPS",
WIDM_OPEN, "WIDM_OPEN",
WIDM_CLOSE, "WIDM_CLOSE",
WIDM_PREPARE, "WIDM_PREPARE",
WIDM_UNPREPARE, "WIDM_UNPREPARE",
WIDM_ADDBUFFER, "WIDM_ADDBUFFER",
WIDM_START, "WIDM_START",
WIDM_STOP, "WIDM_STOP",
WIDM_RESET, "WIDM_RESET",
WIDM_GETPOS, "WIDM_GETPOS",
WIDM_MAPPER_STATUS, "WIDM_MAPPER_STATUS"
};
int i;
int n;
#endif
static DWORD dwNumWaveInDevs;
DWORD dwRet = MMSYSERR_NOTSUPPORTED;
WAVEINCAPSA wiCaps;
MMTIME mmTime32;
DWORD dwTmp;
DWORD UNALIGNED *lpdwTmp;
#if DBG
for( i = 0, n = sizeof(name_map) / sizeof(name_map[0]); i < n; i++ ) {
if ( name_map[i].uMsg == uMessage ) {
break;
}
}
if ( i != n ) {
trace_wavein(( "wid32Message( 0x%X, %s, 0x%X, 0x%X, 0x%X)",
uDeviceID, name_map[i].lpstrName, dwInstance,
dwParam1, dwParam2 ));
}
else {
trace_wavein(( "wid32Message( 0x%X, 0x%X, 0x%X, 0x%X, 0x%X)",
uDeviceID, uMessage, dwInstance,
dwParam1, dwParam2 ));
}
#endif
/*
** Make sure that we are consistent with the WAVE_MAPPER
*/
if ( LOWORD(uDeviceID) == 0xFFFF ) {
uDeviceID = (UINT)-1;
}
switch ( uMessage ) {
case WIDM_GETNUMDEVS:
dwRet = waveInGetNumDevs();
break;
case WIDM_GETDEVCAPS:
// Handle
// VadimB
if (0 == dwInstance) {
dwRet = waveInGetDevCapsA(uDeviceID, &wiCaps, sizeof(wiCaps));
}
else {
dwRet = waveInMessage((HWAVEIN)dwInstance,
uMessage,
(DWORD)&wiCaps,
sizeof(wiCaps));
}
if ( dwRet == MMSYSERR_NOERROR ) {
CopyWaveInCaps( (LPWAVEINCAPS16)GETVDMPTR( dwParam1 ),
&wiCaps, dwParam2 );
}
break;
case WIDM_OPEN:
dwRet = ThunkCommonWaveOpen( WAVE_IN_DEVICE, uDeviceID, dwParam1,
dwParam2, dwInstance );
break;
case WIDM_UNPREPARE:
dwRet = ThunkCommonWaveUnprepareHeader( (HWAVE)dwInstance, dwParam1,
WAVE_IN_DEVICE );
break;
case WIDM_PREPARE:
dwRet = ThunkCommonWavePrepareHeader( (HWAVE)dwInstance, dwParam1,
WAVE_IN_DEVICE );
break;
case WIDM_ADDBUFFER:
dwRet = ThunkCommonWaveReadWrite( WAVE_IN_DEVICE, dwParam1,
dwParam2, dwInstance );
break;
case WIDM_CLOSE:
dwRet = waveInClose( (HWAVEIN)dwInstance );
break;
case WIDM_START:
case WIDM_STOP:
case WIDM_RESET:
dwRet = waveInMessage( (HWAVEIN)dwInstance, uMessage, 0L, 0L );
break;
case WIDM_GETPOS:
GetMMTime( (LPMMTIME16)GETVDMPTR( dwParam1 ), &mmTime32 );
dwRet = waveInGetPosition( (HWAVEIN)dwInstance, &mmTime32,
sizeof(mmTime32) );
if ( dwRet == MMSYSERR_NOERROR ) {
PutMMTime( (LPMMTIME16)GETVDMPTR( dwParam1 ), &mmTime32 );
}
break;
case WIDM_MAPPER_STATUS:
{
WAVEFORMATEX waveFmtEx;
switch ( dwParam1 ) {
case WAVEIN_MAPPER_STATUS_DEVICE:
case WAVEIN_MAPPER_STATUS_MAPPED:
dwRet = waveInMessage( (HWAVEIN)dwInstance, uMessage,
dwParam1, (DWORD)&dwTmp );
lpdwTmp = GETVDMPTR( dwParam2 );
*lpdwTmp = dwTmp;
break;
case WAVEIN_MAPPER_STATUS_FORMAT:
dwRet = waveInMessage( (HWAVEIN)dwInstance, uMessage,
dwParam1, (DWORD)&waveFmtEx );
CopyMemory( (LPVOID)GETVDMPTR( dwParam2 ),
(LPVOID)&waveFmtEx, sizeof(WAVEFORMATEX) );
break;
default:
dwRet = MMSYSERR_NOTSUPPORTED;
}
}
break;
default:
if ( uMessage >= DRV_BUFFER_LOW && uMessage <= DRV_BUFFER_HIGH ) {
lpdwTmp = GETVDMPTR( dwParam1 );
}
else {
lpdwTmp = (LPDWORD)dwParam1;
}
dwRet = waveInMessage( (HWAVEIN)dwInstance, uMessage,
(DWORD)lpdwTmp, dwParam2 );
}
trace_wavein(( "-> 0x%X", dwRet ));
return dwRet;
}
/*****************************Private*Routine******************************\
* ThunkCommonWaveOpen
*
* Thunks all wave device opens
*
* History:
* 22-11-93 - StephenE - Created
*
\**************************************************************************/
DWORD
ThunkCommonWaveOpen(
int iWhich,
UINT uDeviceID,
DWORD dwParam1,
DWORD dwParam2,
DWORD dwInstance
)
{
/*
** dwParam1 is a 16:16 pointer to a WAVEOPENDESC16 structure.
** dwParam2 specifies any option flags used when opening the device.
*/
LPWAVEOPENDESC16 lpOpenDesc16;
WAVEFORMATEX UNALIGNED *lpFormat16;
DWORD dwRet;
WAVEFORMAT wf[4];
WAVEFORMATEX *lpFormat32;
lpOpenDesc16 = GETVDMPTR( dwParam1 );
lpFormat16 = GETVDMPTR( lpOpenDesc16->lpFormat );
/*
** Thunk the wave format structure. If the wave format tag is PCM
** we just copy the structure as is. If the wave format size
** is less than or equal to sizeof(wf) again just copy the
** structure as is, otherwise we allocate a new structure and then
** copy 16 bit wave format into it.
*/
switch ( lpFormat16->wFormatTag ) {
case WAVE_FORMAT_PCM:
CopyMemory( (LPVOID)&wf[0], (LPVOID)lpFormat16, sizeof(PCMWAVEFORMAT) );
lpFormat32 = (WAVEFORMATEX *)&wf[0];
break;
default:
if ( sizeof(WAVEFORMATEX) + lpFormat16->cbSize > sizeof(wf) ) {
lpFormat32 = winmmAlloc( sizeof(WAVEFORMATEX) + lpFormat16->cbSize );
if (lpFormat32 == NULL) {
return MMSYSERR_NOMEM;
}
}
else {
lpFormat32 = (WAVEFORMATEX *)&wf[0];
}
CopyMemory( (LPVOID)lpFormat32, (LPVOID)lpFormat16,
sizeof(WAVEFORMATEX) + lpFormat16->cbSize );
break;
}
/*
** If the app is only querying the device we don't have to do very
** much, just pass the mapped format to waveOutOpen.
*/
if ( dwParam2 & WAVE_FORMAT_QUERY ) {
if ( iWhich == WAVE_OUT_DEVICE ) {
dwRet = waveOutOpen( NULL, uDeviceID, lpFormat32,
lpOpenDesc16->dwCallback,
lpOpenDesc16->dwInstance, dwParam2 );
}
else {
dwRet = waveInOpen( NULL, uDeviceID, lpFormat32,
lpOpenDesc16->dwCallback,
lpOpenDesc16->dwInstance, dwParam2 );
}
}
else {
HWAVE Hand32;
PINSTANCEDATA pInstanceData;
/*
** Create InstanceData block to be used by our callback routine.
**
** NOTE: Although we malloc it here we don't free it.
** This is not a mistake - it must not be freed before the
** callback routine has used it - so it does the freeing.
**
** If the malloc fails we bomb down to the bottom,
** set dwRet to MMSYSERR_NOMEM and exit gracefully.
**
** We always have a callback functions. This is to ensure that
** the WAVEHDR structure keeps getting copied back from
** 32 bit space to 16 bit, as it contains flags which
** applications are liable to keep checking.
*/
pInstanceData = winmmAlloc(sizeof(INSTANCEDATA) );
if ( pInstanceData != NULL ) {
DWORD dwNewFlags = CALLBACK_FUNCTION;
dprintf2(( "WaveCommonOpen: Allocated instance buffer at 0x%8X",
pInstanceData ));
dprintf2(( "16 bit callback = 0x%X", lpOpenDesc16->dwCallback ));
pInstanceData->Hand16 = lpOpenDesc16->hWave;
pInstanceData->dwCallback = lpOpenDesc16->dwCallback;
pInstanceData->dwCallbackInstance = lpOpenDesc16->dwInstance;
pInstanceData->dwFlags = dwParam2;
dwNewFlags |= (dwParam2 & WAVE_ALLOWSYNC);
if ( iWhich == WAVE_OUT_DEVICE ) {
dwRet = waveOutOpen( (LPHWAVEOUT)&Hand32, uDeviceID, lpFormat32,
(DWORD)W32CommonDeviceCB,
(DWORD)pInstanceData, dwNewFlags );
}
else {
dwRet = waveInOpen( (LPHWAVEIN)&Hand32, uDeviceID, lpFormat32,
(DWORD)W32CommonDeviceCB,
(DWORD)pInstanceData, dwNewFlags );
}
/*
** If the call returns success save a copy of the 32 bit handle
** otherwise free the memory we malloc'd earlier, as the
** callback that would have freed it will never get callled.
*/
if ( dwRet == MMSYSERR_NOERROR ) {
DWORD UNALIGNED *lpDw;
lpDw = GETVDMPTR( dwInstance );
*lpDw = (DWORD)Hand32;
SetWOWHandle( Hand32, lpOpenDesc16->hWave );
trace_waveout(( "Handle -> %x", Hand32 ));
}
else {
dprintf2(( "WaveCommonOpen: Freeing instance buffer at %8X "
"because open failed", pInstanceData ));
winmmFree( pInstanceData );
}
}
else {
dwRet = MMSYSERR_NOMEM;
}
}
/*
** Free the wave format structure if one was allocated.
*/
if (lpFormat32 != (WAVEFORMATEX *)&wf[0] ) {
winmmFree( lpFormat32 );
}
return dwRet;
}
/*****************************Private*Routine******************************\
* ThunkCommonWaveReadWrite
*
* Thunks all wave reads and writes.
*
* History:
* 22-11-93 - StephenE - Created
*
\**************************************************************************/
DWORD
ThunkCommonWaveReadWrite(
int iWhich,
DWORD dwParam1,
DWORD dwParam2,
DWORD dwInstance
)
{
UINT ul;
PWAVEHDR32 p32WaveHdr;
WAVEHDR16 UNALIGNED *lp16;
/*
** Get a pointer to the shadow WAVEHDR buffer.
*/
lp16 = GETVDMPTR( dwParam1 );
p32WaveHdr = (PWAVEHDR32)lp16->reserved;
/*
** Make sure that the wave headers are consistent.
*/
p32WaveHdr->Wavehdr.lpData = GETVDMPTR( (PWAVEHDR32)lp16->lpData );
p32WaveHdr->pWavehdr32 = lp16;
CopyMemory( (LPVOID)&p32WaveHdr->Wavehdr.dwBufferLength,
(LPVOID)&lp16->dwBufferLength,
(sizeof(WAVEHDR) - sizeof(LPSTR) - sizeof(DWORD)) );
/*
** Call either waveInAddBuffer or waveOutWrite as determined by
** iWhich.
*/
if ( iWhich == WAVE_OUT_DEVICE ) {
ul = waveOutWrite( (HWAVEOUT)dwInstance,
&p32WaveHdr->Wavehdr, sizeof(WAVEHDR) );
}
else {
ul = waveInAddBuffer( (HWAVEIN)dwInstance,
&p32WaveHdr->Wavehdr, sizeof(WAVEHDR) );
}
/*
** If the call worked reflect any change in the wave header back into
** the header that the application gave use.
*/
if ( ul == MMSYSERR_NOERROR ) {
PutWaveHdr16( lp16, &p32WaveHdr->Wavehdr );
}
return ul;
}
/*****************************Private*Routine******************************\
* ThunkCommonWavePrepareHeader
*
* This function sets up the following structure...
*
*
* +-------------+ +-------------+
* 0:32 | pWavehdr32 |------>| Original |
* +-------------+ | header |
* 16:16 | pWavehdr16 |------>| passed by |
* +-------------+<--+ | the 16 bit |
* | New 32 bit | | | |
* | header thats| | | |
* | used instead| | | |
* | of the one | | +-------------+
* | passed to by| +---| reserved |
* | application.| +-------------+
* | |
* +-------------+
*
* ... and then calls waveXxxPrepareHeader as determioned by iWhich.
*
* Used by:
* waveOutPrepareHdr
* waveInPrepareHdr
*
*
* History:
* dd-mm-94 - StephenE - Created
*
\**************************************************************************/
DWORD
ThunkCommonWavePrepareHeader(
HWAVE hWave,
DWORD dwParam1,
int iWhich
)
{
PWAVEHDR32 p32WaveHdr;
DWORD ul;
WAVEHDR16 UNALIGNED *lp16;
lp16 = GETVDMPTR( dwParam1 );
/*
** Allocate some storage for the new wave header structure.
** On debug builds we keep track of the number of wave headers allocated
** and freed.
*/
p32WaveHdr = (PWAVEHDR32)winmmAlloc( sizeof(WAVEHDR32) );
if ( p32WaveHdr != NULL ) {
#if DBG
AllocWaveCount++;
dprintf2(( "WH>> 0x%X (%d)", p32WaveHdr, AllocWaveCount ));
#endif
/*
** Copy the header given to us by the application into the newly
** allocated header. Note that GetWaveHdr returns a 0:32 pointer
** to the applications 16 bit header, which we save for later use.
*/
p32WaveHdr->pWavehdr16 = (PWAVEHDR16)dwParam1;
p32WaveHdr->pWavehdr32 = GetWaveHdr16( dwParam1,
&p32WaveHdr->Wavehdr );
/*
** Prepare the real header
*/
if ( iWhich == WAVE_OUT_DEVICE ) {
ul = waveOutPrepareHeader( (HWAVEOUT)hWave,
&p32WaveHdr->Wavehdr,
sizeof(WAVEHDR) );
}
else {
ul = waveInPrepareHeader( (HWAVEIN)hWave,
&p32WaveHdr->Wavehdr,
sizeof(WAVEHDR) );
}
if ( ul == MMSYSERR_NOERROR ) {
/*
** Copy back the prepared header so that any changed fields are
** updated.
*/
PutWaveHdr16( lp16, &p32WaveHdr->Wavehdr );
/*
** Save a back pointer to the newly allocated header in the
** reserved field.
*/
lp16->reserved = (DWORD)p32WaveHdr;
}
else {
/*
** Some error happened, anyway the wave header is now trash so
** free the allocated storage etc.
*/
winmmFree( p32WaveHdr );
#if DBG
AllocWaveCount--;
dprintf2(( "WH<< 0x%X (%d)", p32WaveHdr, AllocWaveCount ));
#endif
}
}
else {
dprintf2(( "Could not allocate shadow wave header!!" ));
ul = MMSYSERR_NOMEM;
}
return ul;
}
/*****************************Private*Routine******************************\
* ThunkCommonWaveUnprepareHeader
*
*
*
* History:
* dd-mm-94 - StephenE - Created
*
\**************************************************************************/
DWORD
ThunkCommonWaveUnprepareHeader(
HWAVE hWave,
DWORD dwParam1,
int iWhich
)
{
DWORD ul;
PWAVEHDR32 p32WaveHdr;
WAVEHDR16 UNALIGNED *lp16;
BOOL fDoneBitSet;
lp16 = (WAVEHDR16 UNALIGNED *)GETVDMPTR( dwParam1 );
p32WaveHdr = (PWAVEHDR32)lp16->reserved;
/*
** The DK Stowaway app clears the done bit before calling
** waveOutUnprepareHeader and depends on the done bit being cleared when
** this api returns.
**
** So when we copy the 32 bit flags back we make sure that the done
** is left in the same state that we found it
*/
fDoneBitSet = (lp16->dwFlags & WHDR_DONE);
/*
** Now call waveXxxUnprepare header with the shadow buffer as determined
** by iWhich.
*/
if ( iWhich == WAVE_OUT_DEVICE ) {
ul = waveOutUnprepareHeader( (HWAVEOUT)hWave,
&p32WaveHdr->Wavehdr, sizeof(WAVEHDR) );
}
else {
ul = waveInUnprepareHeader( (HWAVEIN)hWave,
&p32WaveHdr->Wavehdr, sizeof(WAVEHDR) );
}
/*
** Reflect any changes made by waveOutUnprepareHeader back into the
** the buffer that the application gave us.
*/
if ( ul == MMSYSERR_NOERROR ) {
PutWaveHdr16( lp16, &p32WaveHdr->Wavehdr );
/*
** Make sure that we leave the done bit in the same state that we
** found it.
*/
if (fDoneBitSet) {
lp16->dwFlags |= WHDR_DONE;
}
else {
lp16->dwFlags &= ~WHDR_DONE;
}
/*
** If everything worked OK we should free the shadow wave header
** here.
*/
#if DBG
AllocWaveCount--;
dprintf2(( "WH<< 0x%X (%d)", p32WaveHdr, AllocWaveCount ));
#endif
winmmFree( p32WaveHdr );
}
return ul;
}
/*****************************Private*Routine******************************\
* CopyWaveOutCaps
*
* Copies 32 bit wave out caps info into the passed 16bit storage.
*
* History:
* 22-11-93 - StephenE - Created
*
\**************************************************************************/
void
CopyWaveOutCaps(
LPWAVEOUTCAPS16 lpCaps16,
LPWAVEOUTCAPSA lpCaps32,
DWORD dwSize
)
{
WAVEOUTCAPS16 Caps16;
Caps16.wMid = lpCaps32->wMid;
Caps16.wPid = lpCaps32->wPid;
Caps16.vDriverVersion = LOWORD( lpCaps32->vDriverVersion );
CopyMemory( Caps16.szPname, lpCaps32->szPname, MAXPNAMELEN );
Caps16.dwFormats = lpCaps32->dwFormats;
Caps16.wChannels = lpCaps32->wChannels;
Caps16.dwSupport = lpCaps32->dwSupport;
CopyMemory( (LPVOID)lpCaps16, (LPVOID)&Caps16, (UINT)dwSize );
}
/*****************************Private*Routine******************************\
* CopyWaveInCaps
*
* Copies 32 bit wave in caps info into the passed 16bit storage.
*
* History:
* 22-11-93 - StephenE - Created
*
\**************************************************************************/
void
CopyWaveInCaps(
LPWAVEINCAPS16 lpCaps16,
LPWAVEINCAPSA lpCaps32,
DWORD dwSize
)
{
WAVEINCAPS16 Caps16;
Caps16.wMid = lpCaps32->wMid;
Caps16.wPid = lpCaps32->wPid;
Caps16.vDriverVersion = LOWORD( lpCaps32->vDriverVersion );
CopyMemory( Caps16.szPname, lpCaps32->szPname, MAXPNAMELEN );
Caps16.dwFormats = lpCaps32->dwFormats;
Caps16.wChannels = lpCaps32->wChannels;
CopyMemory( (LPVOID)lpCaps16, (LPVOID)&Caps16, (UINT)dwSize );
}
/******************************Public*Routine******************************\
* GetWaveHdr16
*
* Thunks a WAVEHDR structure from 16 bit to 32 bit space.
*
* Used by:
* waveOutWrite
* waveInAddBuffer
*
* Returns a 32 bit pointer to the 16 bit wave header. This wave header
* should have been locked down by wave(In|Out)PrepareHeader. Therefore,
* it is to store this pointer for use during the WOM_DONE callback message.
*
* With the WAVEHDR and MIDIHDR structs I am assured by Robin that the ->lpNext
* field is only used by the driver, and is therefore in 32 bit space. It
* therefore doesn't matter what gets passed back and forth (I hope !).
*
* History:
* 22-11-93 - StephenE - Created
*
\**************************************************************************/
PWAVEHDR16
GetWaveHdr16(
DWORD vpwhdr,
LPWAVEHDR lpwhdr
)
{
register PWAVEHDR16 pwhdr16;
pwhdr16 = GETVDMPTR(vpwhdr);
if ( pwhdr16 == NULL ) {
dprintf1(( "getwavehdr16 GETVDMPTR returned an invalid pointer" ));
return NULL;
}
CopyMemory( (LPVOID)lpwhdr, (LPVOID)pwhdr16, sizeof(*lpwhdr) );
lpwhdr->lpData = GETVDMPTR( pwhdr16->lpData );
return pwhdr16;
}
/******************************Public*Routine******************************\
* PutWaveHdr16
*
* Thunks a WAVEHDR structure from 32 bit back to 16 bit space.
*
* Used by:
* waveOutPrepareHeader
* waveOutUnprepareHeader
* waveOutWrite
* waveInPrepareHeader
* waveInUnprepareHeader
* waveInAddBuffer
*
* History:
* 22-11-93 - StephenE - Created
*
\**************************************************************************/
void
PutWaveHdr16(
WAVEHDR16 UNALIGNED *pwhdr16,
LPWAVEHDR lpwhdr
)
{
LPSTR lpDataSave = pwhdr16->lpData;
DWORD dwReservedSave = pwhdr16->reserved;
CopyMemory( (LPVOID)pwhdr16, (LPVOID)lpwhdr, sizeof(WAVEHDR) );
pwhdr16->lpData = lpDataSave;
pwhdr16->reserved = dwReservedSave;
}
/******************************Public*Routine******************************\
* mod32Message
*
* Thunks all midi out apis.
*
* History:
* 22-11-93 - StephenE - Created
*
\**************************************************************************/
DWORD WINAPI
mod32Message(
UINT uDeviceID,
UINT uMessage,
DWORD dwInstance,
DWORD dwParam1,
DWORD dwParam2
)
{
#if DBG
static MSG_NAME name_map[] = {
MODM_GETNUMDEVS, "MODM_GETNUMDEVS",
MODM_GETDEVCAPS, "MODM_GETDEVCAPS",
MODM_OPEN, "MODM_OPEN",
MODM_CLOSE, "MODM_CLOSE",
MODM_PREPARE, "MODM_PREPARE",
MODM_UNPREPARE, "MODM_UNPREPARE",
MODM_DATA, "MODM_DATA",
MODM_RESET, "MODM_RESET",
MODM_LONGDATA, "MODM_LONGDATA",
MODM_GETVOLUME, "MODM_GETVOLUME",
MODM_SETVOLUME, "MODM_SETVOLUME" ,
MODM_CACHEDRUMPATCHES, "MODM_CACHEDRUMPATCHES",
MODM_CACHEPATCHES, "MODM_CACHEPATCHES"
};
int i;
int n;
#endif
static DWORD dwNumMidiOutDevs;
DWORD dwRet = MMSYSERR_NOTSUPPORTED;
DWORD dwTmp = 0;
DWORD UNALIGNED *lpdwTmp;
MIDIOUTCAPSA moCaps;
#if DBG
for( i = 0, n = sizeof(name_map) / sizeof(name_map[0]); i < n; i++ ) {
if ( name_map[i].uMsg == uMessage ) {
break;
}
}
if ( i != n ) {
trace_midiout(( "mod32Message( 0x%X, %s, 0x%X, 0x%X, 0x%X)",
uDeviceID, name_map[i].lpstrName, dwInstance,
dwParam1, dwParam2 ));
}
else {
trace_midiout(( "mod32Message( 0x%X, 0x%X, 0x%X, 0x%X, 0x%X)",
uDeviceID, uMessage, dwInstance,
dwParam1, dwParam2 ));
}
#endif
if ( LOWORD(uDeviceID) == 0xFFFF ) {
uDeviceID = (UINT)-1;
}
switch ( uMessage ) {
case MODM_GETNUMDEVS:
dwRet = midiOutGetNumDevs();
break;
case MODM_GETDEVCAPS:
//
// this api also might take a valid handle in uDeviceID
// per Win95 behavior
// VadimB
if (0 == dwInstance) {
dwRet = midiOutGetDevCapsA( uDeviceID, &moCaps, sizeof(moCaps));
}
else {
dwRet = midiOutMessage((HMIDIOUT)dwInstance,
uMessage,
(DWORD)&moCaps,
sizeof(moCaps));
}
if ( dwRet == MMSYSERR_NOERROR ) {
CopyMidiOutCaps( (LPMIDIOUTCAPS16)GETVDMPTR( dwParam1 ),
&moCaps, dwParam2 );
}
break;
case MODM_OPEN:
dwRet = ThunkCommonMidiOpen( MIDI_OUT_DEVICE, uDeviceID, dwParam1,
dwParam2, dwInstance );
break;
case MODM_LONGDATA:
dwRet = ThunkCommonMidiReadWrite( MIDI_OUT_DEVICE, dwParam1,
dwParam2, dwInstance );
break;
case MODM_PREPARE:
dwRet = ThunkCommonMidiPrepareHeader( (HMIDI)dwInstance, dwParam1,
MIDI_OUT_DEVICE );
break;
case MODM_UNPREPARE:
dwRet = ThunkCommonMidiUnprepareHeader( (HMIDI)dwInstance, dwParam1,
MIDI_OUT_DEVICE );
break;
case MODM_DATA:
dwRet = midiOutShortMsg( (HMIDIOUT)dwInstance, dwParam1 );
break;
case MODM_CLOSE:
dwRet = midiOutClose( (HMIDIOUT)dwInstance );
break;
case MODM_RESET:
dwRet = midiOutMessage( (HMIDIOUT)dwInstance, uMessage,
dwParam1, dwParam2 );
break;
case MODM_SETVOLUME:
/*
** An application might try to set the volume using either
** the device ID (midiOutSetVolume) or a handle to the device
** midiOutMessage( MODM_SETVOLUME...), if the later is the case
** we must also call midiOutMessage as the device ID will not
** necessarily be valid. Same applies for midiOutGetVolume below.
*/
if ( dwInstance == 0 ) {
dwRet = midiOutSetVolume( (HMIDIOUT)uDeviceID, dwParam1 );
}
else {
dwRet = midiOutMessage( (HMIDIOUT)dwInstance, uMessage,
dwParam1, dwParam2 );
}
break;
case MODM_GETVOLUME:
if ( dwInstance == 0 ) {
dwRet = midiOutGetVolume( (HMIDIOUT)uDeviceID, &dwTmp );
}
else {
dwRet = midiOutMessage( (HMIDIOUT)dwInstance, uMessage,
(DWORD)&dwTmp, dwParam2 );
}
lpdwTmp = GETVDMPTR( dwParam1 );
*lpdwTmp = dwTmp;
break;
case MODM_CACHEPATCHES:
case MODM_CACHEDRUMPATCHES:
{
LPWORD lpCache;
lpCache = winmmAlloc( MIDIPATCHSIZE * sizeof(WORD) );
if ( lpCache != NULL ) {
lpdwTmp = GETVDMPTR( dwParam1 );
CopyMemory( (LPVOID)lpCache, (LPVOID)lpdwTmp,
MIDIPATCHSIZE * sizeof(WORD) );
dwRet = midiOutMessage( (HMIDIOUT)dwInstance, uMessage,
(DWORD)lpCache, dwParam2 );
winmmFree( lpCache );
}
else {
dwRet = MMSYSERR_NOMEM;
}
}
break;
default:
if ( uMessage >= DRV_BUFFER_LOW && uMessage <= DRV_BUFFER_HIGH ) {
lpdwTmp = GETVDMPTR( dwParam1 );
}
else {
lpdwTmp = (LPDWORD)dwParam1;
}
dwRet = midiOutMessage( (HMIDIOUT)dwInstance, uMessage,
(DWORD)lpdwTmp, dwParam2 );
}
trace_midiout(( "-> 0x%X", dwRet ));
return dwRet;
}
/******************************Public*Routine******************************\
* mid32Message
*
* Thunks all midi in apis.
*
* History:
* 22-11-93 - StephenE - Created
*
\**************************************************************************/
DWORD WINAPI
mid32Message(
UINT uDeviceID,
UINT uMessage,
DWORD dwInstance,
DWORD dwParam1,
DWORD dwParam2
)
{
#if DBG
static MSG_NAME name_map[] = {
MIDM_GETNUMDEVS, "MIDM_GETNUMDEVS",
MIDM_GETDEVCAPS, "MIDM_GETDEVCAPS",
MIDM_OPEN, "MIDM_OPEN",
MIDM_ADDBUFFER, "MIDM_ADDBUFFER",
MIDM_CLOSE, "MIDM_CLOSE",
MIDM_PREPARE, "MIDM_PREPARE",
MIDM_UNPREPARE, "MIDM_UNPREPARE",
MIDM_RESET, "MIDM_RESET",
MIDM_START, "MIDM_START",
MIDM_STOP, "MIDM_STOP",
};
int i;
int n;
#endif
static DWORD dwNumMidiInDevs;
DWORD dwRet = MMSYSERR_NOTSUPPORTED;
MIDIINCAPSA miCaps;
DWORD UNALIGNED *lpdwTmp;
#if DBG
for( i = 0, n = sizeof(name_map) / sizeof(name_map[0]); i < n; i++ ) {
if ( name_map[i].uMsg == uMessage ) {
break;
}
}
if ( i != n ) {
trace_midiin(( "mid32Message( 0x%X, %s, 0x%X, 0x%X, 0x%X)",
uDeviceID, name_map[i].lpstrName, dwInstance,
dwParam1, dwParam2 ));
}
else {
trace_midiin(( "mid32Message( 0x%X, 0x%X, 0x%X, 0x%X, 0x%X)",
uDeviceID, uMessage, dwInstance,
dwParam1, dwParam2 ));
}
#endif
if ( LOWORD(uDeviceID) == 0xFFFF ) {
uDeviceID = (UINT)-1;
}
switch ( uMessage ) {
case MIDM_GETNUMDEVS:
dwRet = midiInGetNumDevs();
break;
case MIDM_GETDEVCAPS:
// Handle
// VadimB
if (0 == dwInstance) {
dwRet = midiInGetDevCapsA( uDeviceID, &miCaps, sizeof(miCaps));
}
else {
dwRet = midiInMessage((HMIDIIN)dwInstance,
uMessage,
(DWORD)&miCaps,
sizeof(miCaps));
}
if ( dwRet == MMSYSERR_NOERROR ) {
CopyMidiInCaps( (LPMIDIINCAPS16)GETVDMPTR( dwParam1 ),
&miCaps, dwParam2 );
}
break;
case MIDM_OPEN:
dwRet = ThunkCommonMidiOpen( MIDI_IN_DEVICE, uDeviceID, dwParam1,
dwParam2, dwInstance );
break;
case MIDM_ADDBUFFER:
dwRet = ThunkCommonMidiReadWrite( MIDI_IN_DEVICE, dwParam1,
dwParam2, dwInstance );
break;
case MIDM_PREPARE:
dwRet = ThunkCommonMidiPrepareHeader( (HMIDI)dwInstance, dwParam1,
MIDI_IN_DEVICE );
break;
case MIDM_UNPREPARE:
dwRet = ThunkCommonMidiUnprepareHeader( (HMIDI)dwInstance, dwParam1,
MIDI_IN_DEVICE );
break;
case MIDM_CLOSE:
dwRet = midiInClose( (HMIDIIN)dwInstance );
break;
case MIDM_START:
case MIDM_STOP:
case MIDM_RESET:
dwRet = midiInMessage( (HMIDIIN)dwInstance, uMessage,
dwParam1, dwParam2 );
break;
default:
if ( uMessage >= DRV_BUFFER_LOW && uMessage <= DRV_BUFFER_HIGH ) {
lpdwTmp = GETVDMPTR( dwParam1 );
}
else {
lpdwTmp = (LPDWORD)dwParam1;
}
dwRet = midiInMessage( (HMIDIIN)dwInstance, uMessage,
(DWORD)lpdwTmp, dwParam2 );
}
trace_midiin(( "-> 0x%X", dwRet ));
return dwRet;
}
/*****************************Private*Routine******************************\
* ThunkCommonMidiOpen
*
* Thunks all midi open requests.
*
* History:
* 22-11-93 - StephenE - Created
*
\**************************************************************************/
DWORD
ThunkCommonMidiOpen(
int iWhich,
UINT uDeviceID,
DWORD dwParam1,
DWORD dwParam2,
DWORD dwInstance
)
{
/*
** dwParam1 is a 16:16 pointer to a MIDIOPENDESC16 structure.
** dwParam2 specifies any option flags used when opening the device.
*/
LPMIDIOPENDESC16 lpOpenDesc16;
DWORD dwRet;
HMIDI Hand32;
PINSTANCEDATA pInstanceData;
lpOpenDesc16 = GETVDMPTR( dwParam1 );
/*
** Create InstanceData block to be used by our callback routine.
**
** NOTE: Although we malloc it here we don't free it.
** This is not a mistake - it must not be freed before the
** callback routine has used it - so it does the freeing.
**
** If the malloc fails we bomb down to the bottom,
** set dwRet to MMSYSERR_NOMEM and exit gracefully.
**
** We always have a callback functions. This is to ensure that
** the MIDIHDR structure keeps getting copied back from
** 32 bit space to 16 bit, as it contains flags which
** applications are liable to keep checking.
*/
pInstanceData = winmmAlloc(sizeof(INSTANCEDATA) );
if ( pInstanceData != NULL ) {
DWORD dwNewFlags = CALLBACK_FUNCTION;
dprintf2(( "MidiCommonOpen: Allocated instance buffer at 0x%8X",
pInstanceData ));
dprintf2(( "16 bit callback = 0x%X", lpOpenDesc16->dwCallback ));
pInstanceData->Hand16 = lpOpenDesc16->hMidi;
pInstanceData->dwCallback = lpOpenDesc16->dwCallback;
pInstanceData->dwCallbackInstance = lpOpenDesc16->dwInstance;
pInstanceData->dwFlags = dwParam2;
if ( iWhich == MIDI_OUT_DEVICE ) {
dwRet = midiOutOpen( (LPHMIDIOUT)&Hand32, uDeviceID,
(DWORD)W32CommonDeviceCB,
(DWORD)pInstanceData, dwNewFlags );
}
else {
dwRet = midiInOpen( (LPHMIDIIN)&Hand32, uDeviceID,
(DWORD)W32CommonDeviceCB,
(DWORD)pInstanceData, dwNewFlags );
}
/*
** If the call returns success save a copy of the 32 bit handle
** otherwise free the memory we malloc'd earlier, as the
** callback that would have freed it will never get callled.
*/
if ( dwRet == MMSYSERR_NOERROR ) {
DWORD UNALIGNED *lpDw;
lpDw = GETVDMPTR( dwInstance );
*lpDw = (DWORD)Hand32;
SetWOWHandle( Hand32, lpOpenDesc16->hMidi );
#if DBG
if ( iWhich == MIDI_OUT_DEVICE ) {
trace_midiout(( "Handle -> %x", Hand32 ));
}
else {
trace_midiout(( "Handle -> %x", Hand32 ));
}
#endif
}
else {
dprintf2(( "MidiCommonOpen: Freeing instance buffer at %8X "
"because open failed", pInstanceData ));
winmmFree( pInstanceData );
}
}
else {
dwRet = MMSYSERR_NOMEM;
}
return dwRet;
}
/*****************************Private*Routine******************************\
* ThunkCommonMidiReadWrite
*
* Thunks all midi read/write requests.
*
* History:
* 22-11-93 - StephenE - Created
*
\**************************************************************************/
DWORD
ThunkCommonMidiReadWrite(
int iWhich,
DWORD dwParam1,
DWORD dwParam2,
DWORD dwInstance
)
{
UINT ul;
PMIDIHDR32 p32MidiHdr;
MIDIHDR UNALIGNED *lp16;
/*
** Get a pointer to the shadow MIDIHDR buffer.
*/
lp16 = GETVDMPTR( dwParam1 );
p32MidiHdr = (PMIDIHDR32)lp16->reserved;
/*
** Make sure that the midi headers are consistent.
*/
CopyMemory( (LPVOID)&p32MidiHdr->Midihdr.dwBufferLength,
(LPVOID)&lp16->dwBufferLength,
(sizeof(MIDIHDR) - sizeof(LPSTR) - sizeof(DWORD)) );
p32MidiHdr->Midihdr.reserved = p32MidiHdr->reserved;
/*
** Call either midiInAddBuffer or midiOutWrite as determined by
** iWhich.
*/
if ( iWhich == MIDI_OUT_DEVICE ) {
ul = midiOutLongMsg( (HMIDIOUT)dwInstance,
&p32MidiHdr->Midihdr, sizeof(MIDIHDR) );
}
else {
ul = midiInAddBuffer( (HMIDIIN)dwInstance,
&p32MidiHdr->Midihdr, sizeof(MIDIHDR) );
}
/*
** If the call worked reflect any change in the midi header back into
** the header that the application gave use.
*/
if ( ul == MMSYSERR_NOERROR ) {
PutMidiHdr16( lp16, &p32MidiHdr->Midihdr );
}
return ul;
}
/*****************************Private*Routine******************************\
* ThunkCommonMidiPrepareHeader
*
* This function sets up the following structure...
*
*
* +-------------+ +-------------+
* 0:32 | pMidihdr32 |------>| Original |
* +-------------+ | header |
* 16:16 | pMidihdr16 |------>| passed by |
* +-------------+<--+ | the 16 bit |
* | New 32 bit | | | |
* | header thats| | | |
* | used instead| | | |
* | of the one | | +-------------+
* | passed to by| +---| reserved |
* | application.| +-------------+
* | |
* +-------------+
*
* ... and then calls midiXxxPrepareHeader as determioned by iWhich.
*
* Used by:
* midiOutPrepareHdr
* midiInPrepareHdr
*
*
* History:
* dd-mm-94 - StephenE - Created
*
\**************************************************************************/
DWORD
ThunkCommonMidiPrepareHeader(
HMIDI hMidi,
DWORD dwParam1,
int iWhich
)
{
PMIDIHDR32 p32MidiHdr;
DWORD ul;
MIDIHDR UNALIGNED *lp16;
lp16 = GETVDMPTR( dwParam1 );
/*
** Allocate some storage for the new midi header structure.
** On debug builds we keep track of the number of midi headers allocated
** and freed.
*/
p32MidiHdr = (PMIDIHDR32)winmmAlloc( sizeof(MIDIHDR32) );
if ( p32MidiHdr != NULL ) {
#if DBG
AllocMidiCount++;
dprintf2(( "MH>> 0x%X (%d)", p32MidiHdr, AllocMidiCount ));
#endif
/*
** Copy the header given to us by the application into the newly
** allocated header. Note that GetMidiHdr returns a 0:32 pointer
** to the applications 16 bit header, which we save for later use.
*/
p32MidiHdr->pMidihdr16 = (PMIDIHDR16)dwParam1;
p32MidiHdr->pMidihdr32 = GetMidiHdr16( dwParam1,
&p32MidiHdr->Midihdr );
/*
** Prepare the real header
*/
if ( iWhich == MIDI_OUT_DEVICE ) {
ul = midiOutPrepareHeader( (HMIDIOUT)hMidi,
&p32MidiHdr->Midihdr,
sizeof(MIDIHDR) );
}
else {
ul = midiInPrepareHeader( (HMIDIIN)hMidi,
&p32MidiHdr->Midihdr,
sizeof(MIDIHDR) );
}
if ( ul == MMSYSERR_NOERROR ) {
/*
** Save a copy of the reserved field, MidiMap uses it.
*/
p32MidiHdr->reserved = p32MidiHdr->Midihdr.reserved;
/*
** Copy back the prepared header so that any changed fields are
** updated.
*/
PutMidiHdr16( lp16, &p32MidiHdr->Midihdr );
/*
** Save a back pointer to the newly allocated header in the
** reserved field.
*/
lp16->reserved = (DWORD)p32MidiHdr;
}
else {
/*
** Some error happened, anyway the midi header is now trash so
** free the allocated storage etc.
*/
winmmFree( p32MidiHdr );
#if DBG
AllocMidiCount--;
dprintf2(( "MH<< 0x%X (%d)", p32MidiHdr, AllocMidiCount ));
#endif
}
}
else {
dprintf2(( "Could not allocate shadow midi header!!" ));
ul = MMSYSERR_NOMEM;
}
return ul;
}
/*****************************Private*Routine******************************\
* ThunkCommonMidiUnprepareHeader
*
*
*
* History:
* dd-mm-94 - StephenE - Created
*
\**************************************************************************/
DWORD
ThunkCommonMidiUnprepareHeader(
HMIDI hMidi,
DWORD dwParam1,
int iWhich
)
{
DWORD ul;
PMIDIHDR32 p32MidiHdr;
MIDIHDR UNALIGNED *lp16;
lp16 = (MIDIHDR UNALIGNED *)GETVDMPTR( dwParam1 );
p32MidiHdr = (PMIDIHDR32)lp16->reserved;
p32MidiHdr->Midihdr.reserved = p32MidiHdr->reserved;
/*
** Now call midiXxxUnprepare header with the shadow buffer as determined
** by iWhich.
*/
if ( iWhich == MIDI_OUT_DEVICE ) {
ul = midiOutUnprepareHeader( (HMIDIOUT)hMidi,
&p32MidiHdr->Midihdr, sizeof(MIDIHDR) );
}
else {
ul = midiInUnprepareHeader( (HMIDIIN)hMidi,
&p32MidiHdr->Midihdr, sizeof(MIDIHDR) );
}
/*
** Reflect any changes made by midiOutUnprepareHeader back into the
** the buffer that the application gave us.
*/
if ( ul == MMSYSERR_NOERROR ) {
PutMidiHdr16( lp16, &p32MidiHdr->Midihdr );
/*
** If everything worked OK we should free the shadow midi header
** here.
*/
#if DBG
AllocMidiCount--;
dprintf2(( "MH<< 0x%X (%d)", p32MidiHdr, AllocMidiCount ));
#endif
winmmFree( p32MidiHdr );
}
return ul;
}
/*****************************Private*Routine******************************\
* CopyMidiOutCaps
*
* Copies 32 bit midi out caps info into the passed 16bit storage.
*
* History:
* 22-11-93 - StephenE - Created
*
\**************************************************************************/
void
CopyMidiOutCaps(
LPMIDIOUTCAPS16 lpCaps16,
LPMIDIOUTCAPSA lpCaps32,
DWORD dwSize
)
{
MIDIOUTCAPS16 Caps16;
Caps16.wMid = lpCaps32->wMid;
Caps16.wPid = lpCaps32->wPid;
CopyMemory( Caps16.szPname, lpCaps32->szPname, MAXPNAMELEN );
Caps16.vDriverVersion = LOWORD( lpCaps32->vDriverVersion );
Caps16.wTechnology = lpCaps32->wTechnology;
Caps16.wVoices = lpCaps32->wVoices;
Caps16.wNotes = lpCaps32->wNotes;
Caps16.wChannelMask = lpCaps32->wChannelMask;
Caps16.dwSupport = lpCaps32->dwSupport;
CopyMemory( (LPVOID)lpCaps16, (LPVOID)&Caps16, (UINT)dwSize );
}
/*****************************Private*Routine******************************\
* CopyMidiInCaps
*
* Copies 32 bit midi in caps info into the passed 16bit storage.
*
* History:
* 22-11-93 - StephenE - Created
*
\**************************************************************************/
void
CopyMidiInCaps(
LPMIDIINCAPS16 lpCaps16,
LPMIDIINCAPSA lpCaps32,
DWORD dwSize
)
{
MIDIINCAPS16 Caps16;
Caps16.wMid = lpCaps32->wMid;
Caps16.wPid = lpCaps32->wPid;
Caps16.vDriverVersion = LOWORD( lpCaps32->vDriverVersion );
CopyMemory( Caps16.szPname, lpCaps32->szPname, MAXPNAMELEN );
CopyMemory( (LPVOID)lpCaps16, (LPVOID)&Caps16, (UINT)dwSize );
}
/******************************Public*Routine******************************\
* GetMidiHdr16
*
* Thunks a MIDIHDR structure from 16 bit to 32 bit space.
*
* Used by:
* midiOutLongMsg
* midiInAddBuffer
*
* Returns a 32 bit pointer to the 16 bit midi header. This midi header
* should have been locked down by midi(In|Out)PrepareHeader. Therefore,
* it is to store this pointer for use during the WOM_DONE callback message.
*
* With the MIDIHDR and MIDIHDR structs I am assured by Robin that the ->lpNext
* field is only used by the driver, and is therefore in 32 bit space. It
* therefore doesn't matter what gets passed back and forth (I hope !).
*
* History:
* 22-11-93 - StephenE - Created
*
\**************************************************************************/
PMIDIHDR16
GetMidiHdr16(
DWORD vpmhdr,
LPMIDIHDR lpmhdr
)
{
register PMIDIHDR16 pmhdr16;
pmhdr16 = GETVDMPTR(vpmhdr);
if ( pmhdr16 == NULL ) {
dprintf1(( "getmidihdr16 GETVDMPTR returned an invalid pointer" ));
return NULL;
}
CopyMemory( (LPVOID)lpmhdr, (LPVOID)pmhdr16, sizeof(*lpmhdr) );
lpmhdr->lpData = GETVDMPTR( pmhdr16->lpData );
return pmhdr16;
}
/******************************Public*Routine******************************\
* PutMidiHdr16
*
* Thunks a MIDIHDR structure from 32 bit back to 16 bit space.
*
* Used by:
* midiOutPrepareHeader
* midiOutUnprepareHeader
* midiOutLongMsg
* midiInPrepareHeader
* midiInUnprepareHeader
* midiInAddBuffer
*
* History:
* 22-11-93 - StephenE - Created
*
\**************************************************************************/
void
PutMidiHdr16(
MIDIHDR UNALIGNED *pmhdr16,
LPMIDIHDR lpmhdr
)
{
LPSTR lpDataSave = pmhdr16->lpData;
DWORD dwReservedSave = pmhdr16->reserved;
CopyMemory( (LPVOID)pmhdr16, (LPVOID)lpmhdr, sizeof(MIDIHDR) );
pmhdr16->lpData = lpDataSave;
pmhdr16->reserved = dwReservedSave;
}
/*****************************Private*Routine******************************\
* PutMMTime
*
* Puts an MMTIME structure from 32 bit storage into 16 bit storage
*
* History:
* 22-11-93 - StephenE - Created
*
\**************************************************************************/
void
PutMMTime(
LPMMTIME16 lpTime16,
LPMMTIME lpTime32
)
{
lpTime16->wType = LOWORD(lpTime32->wType);
switch ( lpTime32->wType ) {
case TIME_MS:
lpTime16->u.ms = lpTime32->u.ms;
break;
case TIME_SAMPLES:
lpTime16->u.sample = lpTime32->u.sample;
break;
case TIME_BYTES:
lpTime16->u.cb = lpTime32->u.cb;
break;
case TIME_SMPTE:
lpTime16->u.smpte.hour = lpTime32->u.smpte.hour;
lpTime16->u.smpte.min = lpTime32->u.smpte.min;
lpTime16->u.smpte.sec = lpTime32->u.smpte.sec;
lpTime16->u.smpte.frame = lpTime32->u.smpte.frame;
lpTime16->u.smpte.fps = lpTime32->u.smpte.fps;
lpTime16->u.smpte.dummy = lpTime32->u.smpte.dummy;
break;
case TIME_MIDI:
lpTime16->u.midi.songptrpos = lpTime32->u.midi.songptrpos;
break;
}
}
/*****************************Private*Routine******************************\
* GetMMTime
*
* Gets an MMTIME structure from 16 bit storage into 32 bit storage
*
* History:
* 22-11-93 - StephenE - Created
*
\**************************************************************************/
void
GetMMTime(
LPMMTIME16 lpTime16,
LPMMTIME lpTime32
)
{
lpTime32->wType = lpTime16->wType;
switch ( lpTime32->wType ) {
case TIME_MS:
lpTime32->u.ms = lpTime16->u.ms;
break;
case TIME_SAMPLES:
lpTime32->u.sample = lpTime16->u.sample;
break;
case TIME_BYTES:
lpTime32->u.cb = lpTime16->u.cb;
break;
case TIME_SMPTE:
lpTime32->u.smpte.hour = lpTime16->u.smpte.hour;
lpTime32->u.smpte.min = lpTime16->u.smpte.min;
lpTime32->u.smpte.sec = lpTime16->u.smpte.sec;
lpTime32->u.smpte.frame = lpTime16->u.smpte.frame;
lpTime32->u.smpte.fps = lpTime16->u.smpte.fps;
lpTime32->u.smpte.dummy = lpTime16->u.smpte.dummy;
break;
case TIME_MIDI:
lpTime32->u.midi.songptrpos = lpTime16->u.midi.songptrpos;
break;
}
}
/******************************Public*Routine******************************\
* W32CommonDeviceCB
*
* This routine is the callback which is ALWAYS called by wave and midi
* functions. This is done to ensure that the XXXXHDR structure keeps
* getting copied back from 32 bit space to 16 bit, as it contains flags
* which the application is liable to keep checking.
*
* The way this whole business works is that the wave/midi data stays in 16
* bit space, but the XXXXHDR is copied to the 32 bit side, with the
* address of the data thunked accordingly so that Robin's device driver
* can still get at the data but we don't have the performance penalty of
* copying it back and forth all the time, not least because it is liable
* to be rather large...
*
* It also handles the tidying up of memory which is reserved to store
* the XXXXHDR, and the instance data (HWND/Callback address; instance
* data; flags) which the xxxxOpen calls pass to this routine, enabling
* it to forward messages or call callback as required.
*
* This routine handles all the messages that get sent from Robin's
* driver, and in fact thunks them back to the correct 16 bit form. In
* theory there should be no MM_ format messages from the 16 bit side, so
* I can zap 'em out of WMSG16. However the 32 bit side should thunk the
* mesages correctly and forward them to the 16 bit side and thence to
* the app.
*
* For the MM_WIM_DATA and MM_WOM_DONE message dwParam1 points to the
* following data struture.
*
* P32HDR is a 32 bit pointer to the original 16 bit header
* P16HDR is a 16 bit far pointer to the original 16 bit header
*
* If we need to refernece the original header we must do via the
* P32HDR pointer.
*
* +---------+
* | P32HDR +----->+---------+
* +---------+ | 16 bit |
* | P16HDR +----->| | This is the original
* dwParam1 ----->+---------+ | Wave | wave header passed to
* | 32 bit | | Header | us by the Win 16 app.
* This is the 32 | | | |
* bit wave | Wave | +---------+
* header that we | Header |
* thunked at | |
* earlier. +---------+
*
*
* We must ensure that the 32 bit structure is completely hidden from the
* 16 bit application, ie. the 16 bit app only see's the wave header that it
* passed to us earlier.
*
*
* NOTE: dwParam2 is junk
*
*
*
* History:
* 22-11-93 - StephenE - Created
*
\**************************************************************************/
VOID
W32CommonDeviceCB(
HANDLE handle,
UINT uMsg,
DWORD dwInstance,
DWORD dwParam1,
DWORD dwParam2
)
{
PWAVEHDR32 pWavehdr32;
PMIDIHDR32 pMidiThunkHdr;
PINSTANCEDATA pInstanceData;
HANDLE16 Hand16;
pInstanceData = (PINSTANCEDATA)dwInstance;
WinAssert( pInstanceData );
switch (uMsg) {
/* ------------------------------------------------------------
** MIDI INPUT MESSAGES
** ------------------------------------------------------------
*/
case MM_MIM_LONGDATA:
/*
** This message is sent to a window when an input buffer has been
** filled with MIDI system-exclusive data and is being returned to
** the application.
*/
case MM_MIM_LONGERROR:
/*
** This message is sent to a window when an invalid MIDI
** system-exclusive message is received.
*/
pMidiThunkHdr = CONTAINING_RECORD(dwParam1, MIDIHDR32, Midihdr);
WinAssert( pMidiThunkHdr );
COPY_MIDIINHDR16_FLAGS( pMidiThunkHdr->pMidihdr32, pMidiThunkHdr->Midihdr );
dwParam1 = (DWORD)pMidiThunkHdr->pMidihdr16;
case MM_MIM_DATA:
/*
** This message is sent to a window when a MIDI message is
** received by a MIDI input device.
*/
case MM_MIM_ERROR:
/*
** This message is sent to a window when an invalid MIDI message
** is received.
*/
case MM_MIM_OPEN:
/*
** This message is sent to a window when a MIDI input device is opened.
** We process this message the same way as MM_MIM_CLOSE (see below)
*/
case MM_MIM_CLOSE:
/*
** This message is sent to a window when a MIDI input device is
** closed. The device handle is no longer valid once this message
** has been sent.
*/
Hand16 = pInstanceData->Hand16;
break;
/* ------------------------------------------------------------
** MIDI OUTPUT MESSAGES
** ------------------------------------------------------------
*/
case MM_MOM_DONE:
/*
** This message is sent to a window when the specified
** system-exclusive buffer has been played and is being returned to
** the application.
*/
pMidiThunkHdr = CONTAINING_RECORD(dwParam1, MIDIHDR32, Midihdr);
WinAssert( pMidiThunkHdr );
COPY_MIDIOUTHDR16_FLAGS( pMidiThunkHdr->pMidihdr32, pMidiThunkHdr->Midihdr );
dwParam1 = (DWORD)pMidiThunkHdr->pMidihdr16;
case MM_MOM_OPEN:
/*
** This message is sent to a window when a MIDI output device is opened.
** We process this message the same way as MM_MOM_CLOSE (see below)
*/
case MM_MOM_CLOSE:
/*
** This message is sent to a window when a MIDI output device is
** closed. The device handle is no longer valid once this message
** has been sent.
*/
Hand16 = pInstanceData->Hand16;
break;
/* ------------------------------------------------------------
** WAVE INPUT MESSAGES
** ------------------------------------------------------------
*/
case MM_WIM_DATA:
/*
** This message is sent to a window when waveform data is present
** in the input buffer and the buffer is being returned to the
** application. The message can be sent either when the buffer
** is full, or after the waveInReset function is called.
*/
pWavehdr32 = (PWAVEHDR32)( (PBYTE)dwParam1 - (sizeof(PWAVEHDR16) * 2));
WinAssert( pWavehdr32 );
COPY_WAVEINHDR16_FLAGS( pWavehdr32->pWavehdr32, pWavehdr32->Wavehdr );
dwParam1 = (DWORD)pWavehdr32->pWavehdr16;
case MM_WIM_OPEN:
/*
** This message is sent to a window when a waveform input
** device is opened.
**
** We process this message the same way as MM_WIM_CLOSE (see below)
*/
case MM_WIM_CLOSE:
/*
** This message is sent to a window when a waveform input device is
** closed. The device handle is no longer valid once the message has
** been sent.
*/
Hand16 = pInstanceData->Hand16;
break;
/* ------------------------------------------------------------
** WAVE OUTPUT MESSAGES
** ------------------------------------------------------------
*/
case MM_WOM_DONE:
/*
** This message is sent to a window when the specified output
** buffer is being returned to the application. Buffers are returned
** to the application when they have been played, or as the result of
** a call to waveOutReset.
*/
pWavehdr32 = (PWAVEHDR32)( (PBYTE)dwParam1 - (sizeof(PWAVEHDR16) * 2));
WinAssert( pWavehdr32 );
COPY_WAVEOUTHDR16_FLAGS( pWavehdr32->pWavehdr32, pWavehdr32->Wavehdr );
dwParam1 = (DWORD)pWavehdr32->pWavehdr16;
case MM_WOM_OPEN:
/*
** This message is sent to a window when a waveform output device
** is opened.
**
** We process this message the same way as MM_WOM_CLOSE (see below)
*/
case MM_WOM_CLOSE:
/*
** This message is sent to a window when a waveform output device
** is closed. The device handle is no longer valid once the
** message has been sent.
*/
Hand16 = pInstanceData->Hand16;
break;
#if DBG
default:
dprintf(( "Unknown message received in CallBack function " ));
return;
#endif
}
/*
** Now make the CallBack, or PostMessage call depending
** on the flags passed to original (wave|midi)(In|Out)Open call.
*/
pInstanceData = (PINSTANCEDATA)dwInstance;
WinAssert( pInstanceData );
switch (pInstanceData->dwFlags & CALLBACK_TYPEMASK) {
case CALLBACK_WINDOW:
dprintf3(( "WINDOW callback identified" ));
PostMessage( HWND32( LOWORD(pInstanceData->dwCallback) ),
uMsg, Hand16, dwParam1 );
break;
case CALLBACK_TASK:
case CALLBACK_FUNCTION: {
DWORD dwFlags;
if ( (pInstanceData->dwFlags & CALLBACK_TYPEMASK) == CALLBACK_TASK ) {
dprintf3(( "TASK callback identified" ));
dwFlags = DCB_TASK;
}
else {
dprintf3(( "FUNCTION callback identified" ));
dwFlags = DCB_FUNCTION;
}
WOW32DriverCallback( pInstanceData->dwCallback,
dwFlags,
Hand16,
LOWORD( uMsg ),
pInstanceData->dwCallbackInstance,
dwParam1,
dwParam2 );
}
break;
}
/*
** Now, free up any storage that was allocated during the waveOutOpen
** and waveInOpen. This should only be freed during the MM_WOM_CLOSE or
** MM_WIM_CLOSE message.
*/
switch (uMsg) {
case MM_MIM_CLOSE:
case MM_MOM_CLOSE:
case MM_WIM_CLOSE:
case MM_WOM_CLOSE:
dprintf2(( "W32CommonDeviceOpen: Freeing device open buffer at %X",
pInstanceData ));
dprintf2(( "Alloc Midi count = %d", AllocMidiCount ));
dprintf2(( "Alloc Wave count = %d", AllocWaveCount ));
winmmFree( pInstanceData );
break;
}
}
/******************************Public*Routine******************************\
* WOW32DriverCallback
*
* Callback stub, which invokes the "real" 16 bit callback.
* The parameters to this function must be in the format that the 16 bit
* code expects, i.e. all handles must be 16 bit handles, all addresses must
* be 16:16 ones.
*
*
* It is possible that this function will have been called with the
* DCB_WINDOW set in which case the 16 bit interrupt handler will call
* PostMessage. Howver, it is much more efficient if PostMessage is called
* from the 32 bit side.
*
* History:
* 22-11-93 - StephenE - Created
*
\**************************************************************************/
BOOL WOW32DriverCallback( DWORD dwCallback, DWORD dwFlags, WORD wID, WORD wMsg,
DWORD dwUser, DWORD dw1, DWORD dw2 )
{
PCALLBACK_ARGS pArgs;
WORD tempSendCount;
/*
** If this is window callback post the message here and let WOW
** take care of it.
*/
if ( (dwFlags & DCB_TYPEMASK) == DCB_WINDOW ) {
return PostMessage( HWND32( LOWORD(dwCallback) ), wMsg, wID, dw1 );
}
/*
** Now we put the parameters into the global callback data array
** and increment the wSendCount field. Then we simulate
** an interrupt to the 16 bit code.
**
** If tempSendCount == wRecvCount then we have filled the callback buffer.
** We throw this interrupt away, but still simulate an interrupt to the
** 16 bit side in an attempt to get it procesing the interrupt still in
** the buffer.
*/
EnterCriticalSection( &mmCriticalSection );
tempSendCount = ((pCallBackData->wSendCount + 1) % CALLBACK_ARGS_SIZE);
if (tempSendCount != pCallBackData->wRecvCount) {
pArgs = &pCallBackData->args[ pCallBackData->wSendCount ];
pArgs->dwFlags = dwFlags;
pArgs->dwFunctionAddr = dwCallback;
pArgs->wHandle = wID;
pArgs->wMessage = wMsg;
pArgs->dwInstance = dwUser;
pArgs->dwParam1 = dw1;
pArgs->dwParam2 = dw2;
/*
** Increment the send count. Use of the % operator above makes
** sure that we wrap around to the begining of the array correctly.
*/
pCallBackData->wSendCount = tempSendCount;
}
dprintf4(( "Send count = %d, Receive count = %d",
pCallBackData->wSendCount, pCallBackData->wRecvCount ));
LeaveCriticalSection( &mmCriticalSection );
/*
** Dispatch the interrupt to the 16 bit code.
*/
dprintf4(( "Dispatching HW interrupt callback" ));
if (!IsNEC_98) {
GenerateInterrupt( MULTIMEDIA_ICA, MULTIMEDIA_LINE, 1 );
} else {
GenerateInterrupt( MULTIMEDIA_ICA, MULTIMEDIA_LINE_98, 1 );
}
/*
** Dummy return code, used to keep api consistent with Win31 and Win NT.
*/
return TRUE;
}
/******************************Public*Routine******************************\
* aux32Message
*
* Thunk the aux apis.
*
* History:
* 22-11-93 - StephenE - Created
*
\**************************************************************************/
DWORD WINAPI
aux32Message(
UINT uDeviceID,
UINT uMessage,
DWORD dwInstance,
DWORD dwParam1,
DWORD dwParam2
)
{
#if DBG
static MSG_NAME name_map[] = {
AUXDM_GETNUMDEVS, "AUXDM_GETNUMDEVS",
AUXDM_GETDEVCAPS, "AUXDM_GETDEVCAPS",
AUXDM_GETVOLUME, "AUXDM_GETVOLUME",
AUXDM_SETVOLUME, "AUXDM_SETVOLUME",
};
int i;
int n;
#endif
static DWORD dwNumAuxDevs;
DWORD dwRet = MMSYSERR_NOTSUPPORTED;
DWORD dwTmp;
DWORD UNALIGNED *lpdwTmp;
AUXCAPSA aoCaps;
#if DBG
for( i = 0, n = sizeof(name_map) / sizeof(name_map[0]); i < n; i++ ) {
if ( name_map[i].uMsg == uMessage ) {
break;
}
}
if ( i != n ) {
trace_aux(( "aux32Message( 0x%X, %s, 0x%X, 0x%X, 0x%X)",
uDeviceID, name_map[i].lpstrName, dwInstance,
dwParam1, dwParam2 ));
}
else {
trace_aux(( "aux32Message( 0x%X, 0x%X, 0x%X, 0x%X, 0x%X)",
uDeviceID, uMessage, dwInstance,
dwParam1, dwParam2 ));
}
#endif
if ( LOWORD(uDeviceID) == 0xFFFF ) {
uDeviceID = (UINT)-1;
}
dprintf2(( "aux32Message (0x%x)", uMessage ));
switch ( uMessage ) {
case AUXDM_GETNUMDEVS:
dwRet = auxGetNumDevs();
break;
case AUXDM_GETDEVCAPS:
dwRet = auxGetDevCapsA( uDeviceID, &aoCaps, sizeof(aoCaps) );
if ( dwRet == MMSYSERR_NOERROR ) {
CopyAuxCaps( (LPAUXCAPS16)GETVDMPTR( dwParam1 ),
&aoCaps, dwParam2 );
}
break;
case AUXDM_GETVOLUME:
dwRet = auxGetVolume( uDeviceID, &dwTmp );
lpdwTmp = GETVDMPTR( dwParam1 );
*lpdwTmp = dwTmp;
break;
case AUXDM_SETVOLUME:
dwRet = auxSetVolume( uDeviceID, dwParam1 );
break;
default:
if ( uMessage >= DRV_BUFFER_LOW && uMessage <= DRV_BUFFER_HIGH ) {
lpdwTmp = GETVDMPTR( dwParam1 );
}
else {
lpdwTmp = (LPDWORD)dwParam1;
}
dwRet = auxOutMessage( uDeviceID, uMessage,
(DWORD)lpdwTmp, dwParam2 );
}
trace_aux(( "-> 0x%X", dwRet ));
return dwRet;
}
/*****************************Private*Routine******************************\
* CopyAuxCaps
*
* Copies 32 bit aux out caps info into the passed 16bit storage.
*
* History:
* 22-11-93 - StephenE - Created
*
\**************************************************************************/
void
CopyAuxCaps(
LPAUXCAPS16 lpCaps16,
LPAUXCAPSA lpCaps32,
DWORD dwSize
)
{
AUXCAPS16 Caps16;
Caps16.wMid = lpCaps32->wMid;
Caps16.wPid = lpCaps32->wPid;
Caps16.vDriverVersion = LOWORD( lpCaps32->vDriverVersion );
CopyMemory( Caps16.szPname, lpCaps32->szPname, MAXPNAMELEN );
Caps16.wTechnology = lpCaps32->wTechnology;
Caps16.dwSupport = lpCaps32->dwSupport;
CopyMemory( (LPVOID)lpCaps16, (LPVOID)&Caps16, (UINT)dwSize );
}
/******************************Public*Routine******************************\
* tid32Message
*
* Thunk the timer apis
*
* History:
* 22-11-93 - StephenE - Created
*
\**************************************************************************/
DWORD WINAPI
tid32Message(
UINT uDevId,
UINT uMessage,
DWORD dwInstance,
DWORD dwParam1,
DWORD dwParam2
)
{
#if DBG
static MSG_NAME name_map[] = {
TDD_SETTIMEREVENT, "timeSetEvent",
TDD_KILLTIMEREVENT, "timeKillEvent",
TDD_GETSYSTEMTIME, "timeGetTime",
TDD_GETDEVCAPS, "timeGetDevCaps",
TDD_BEGINMINPERIOD, "timeBeginPeriod",
TDD_ENDMINPERIOD, "timeEndPeriod",
};
int i;
int n;
#endif
DWORD dwRet = TIMERR_NOCANDO;
LPTIMECAPS16 lp16TimeCaps;
LPTIMEREVENT16 lp16TimeEvent;
#if DBG
for( i = 0, n = sizeof(name_map) / sizeof(name_map[0]); i < n; i++ ) {
if ( name_map[i].uMsg == uMessage ) {
break;
}
}
if ( i != n ) {
trace_time(( "tid32Message( %s, 0x%X, 0x%X)",
name_map[i].lpstrName, dwParam1, dwParam2 ));
}
else {
trace_time(( "tid32Message( 0x%X, 0x%X, 0x%X)",
uMessage, dwParam1, dwParam2 ));
}
#endif
switch (uMessage) {
case TDD_SETTIMEREVENT:
lp16TimeEvent = (LPTIMEREVENT16)GETVDMPTR( dwParam1);
trace_time(( "tid32Message: timeSetEvent(%#X, %#X, %#X, %#X)",
lp16TimeEvent->wDelay, lp16TimeEvent->wResolution,
lp16TimeEvent->lpFunction, lp16TimeEvent->wFlags ));
/*
** The only difference for WOW is that WOW32DriverCallback is
** called for the callback rather than DriverCallback. The
** last parameter to timeSetEventInternal makes this happen.
*/
dwRet = timeSetEventInternal( max( lp16TimeEvent->wDelay,
g_TimeCaps32.wPeriodMin ),
lp16TimeEvent->wResolution,
(LPTIMECALLBACK)lp16TimeEvent->lpFunction,
(DWORD)lp16TimeEvent->dwUser,
lp16TimeEvent->wFlags & TIME_PERIODIC,
TRUE);
dprintf4(( "timeSetEvent: 32 bit time ID %8X", dwRet ));
break;
case TDD_KILLTIMEREVENT:
dwRet = timeKillEvent( dwParam1 );
{
/*
** Purge the callback queue of any messages were
** generated with this timer id.
*/
int nIndex;
EnterCriticalSection( &mmCriticalSection );
for ( nIndex = 0; nIndex < CALLBACK_ARGS_SIZE; nIndex++ ) {
if ( pCallBackData->args[ nIndex ].wHandle == LOWORD(dwParam1) &&
pCallBackData->args[ nIndex ].wMessage == 0 ) {
pCallBackData->args[ nIndex ].dwFunctionAddr = 0L;
}
}
LeaveCriticalSection( &mmCriticalSection );
}
break;
case TDD_GETSYSTEMTIME:
dwRet = timeGetTime();
break;
case TDD_GETDEVCAPS:
dwRet = 0;
lp16TimeCaps = GETVDMPTR( dwParam1 );
/*
** Under NT, the minimum time period is about 15ms.
** But Win3.1 on a 386 always returns 1ms. Encarta doesn't even
** bother testing the CD-ROM's speed if the minimum period
** is > 2ms, it just assumes it is too slow. So here we lie
** to WOW apps and always tell them 1ms just like Win3.1.
** John Vert (jvert) 17-Jun-1993
*/
#ifdef TELL_THE_TRUTH
lp16TimeCaps->wPeriodMin = g_TimeCaps32.wPeriodMin;
#else
lp16TimeCaps->wPeriodMin = MIN_TIME_PERIOD_WE_RETURN;
#endif
/*
** In windows 3.1 the wPeriodMax value is 0xFFFF which is the
** max value you can store in a word. In windows NT the
** wPeriodMax is 0xF4240 (1000 seconds).
**
** If we just cast the 32 bit value down to a 16bit value we
** end up with 0x4240 which very small compared to real 32 bit
** value.
**
** Therefore I will take the minimum of wPeriodMax and 0xFFFF
** that way will should remain consistent with Win 3.1 if
** wPeriodMax is greater than 0xFFFF.
*/
lp16TimeCaps->wPeriodMax = (WORD)min(0xFFFF, g_TimeCaps32.wPeriodMax);
break;
case TDD_ENDMINPERIOD:
dwParam1 = max(dwParam1, g_TimeCaps32.wPeriodMin);
dwRet = timeEndPeriod( dwParam1 );
break;
case TDD_BEGINMINPERIOD:
dwParam1 = max(dwParam1, g_TimeCaps32.wPeriodMin);
dwRet = timeBeginPeriod( dwParam1 );
break;
}
trace_time(( "-> 0x%X", dwRet ));
return dwRet;
}
/******************************Public*Routine******************************\
* joy32Message
*
* Thunk the joystick apis
*
* History:
* 22-11-93 - StephenE - Created
*
\**************************************************************************/
DWORD WINAPI
joy32Message(
UINT uID,
UINT uMessage,
DWORD dwInstance,
DWORD dwParam1,
DWORD dwParam2
)
{
#if DBG
static MSG_NAME name_map[] = {
JDD_GETDEVCAPS, "joyGetDevCaps",
JDD_GETPOS, "joyGetPos",
// JDD_SETCALIBRATION, "joySetCalibration",
JDD_GETNUMDEVS, "joyGetNumDevs"
};
int i;
int n;
#endif
UINT wXbase;
UINT wXdelta;
UINT wYbase;
UINT wYdelta;
UINT wZbase;
UINT wZdelta;
WORD UNALIGNED *lpw;
DWORD dwRet = TIMERR_NOCANDO;
JOYCAPSA JoyCaps32;
JOYINFO JoyInfo32;
LPJOYCAPS16 lp16JoyCaps;
LPJOYINFO16 lp16JoyInfo;
#if DBG
for( i = 0, n = sizeof(name_map) / sizeof(name_map[0]); i < n; i++ ) {
if ( name_map[i].uMsg == uMessage ) {
break;
}
}
if ( i != n ) {
trace_joy(( "joy32Message( %s, 0x%X, 0x%X)",
name_map[i].lpstrName, dwParam1, dwParam2 ));
}
else {
trace_joy(( "joy32Message( 0x%X, 0x%X, 0x%X)",
uMessage, dwParam1, dwParam2 ));
}
#endif
switch (uMessage) {
case JDD_GETDEVCAPS:
dwRet = joyGetDevCapsA( uID, &JoyCaps32, sizeof(JoyCaps32) );
if ( dwRet == 0 ) {
JOYCAPS16 JoyCaps16;
lp16JoyCaps = GETVDMPTR( dwParam1 );
JoyCaps16.wMid = JoyCaps32.wMid;
JoyCaps16.wPid = JoyCaps32.wPid;
CopyMemory( JoyCaps16.szPname, JoyCaps32.szPname, MAXPNAMELEN );
JoyCaps16.wXmin = LOWORD( JoyCaps32.wXmin );
JoyCaps16.wXmax = LOWORD( JoyCaps32.wXmax );
JoyCaps16.wYmin = LOWORD( JoyCaps32.wYmin );
JoyCaps16.wYmax = LOWORD( JoyCaps32.wYmax );
JoyCaps16.wZmin = LOWORD( JoyCaps32.wZmin );
JoyCaps16.wZmax = LOWORD( JoyCaps32.wZmax );
JoyCaps16.wNumButtons = LOWORD( JoyCaps32.wNumButtons );
JoyCaps16.wPeriodMin = LOWORD( JoyCaps32.wPeriodMin );
JoyCaps16.wPeriodMax = LOWORD( JoyCaps32.wPeriodMax );
CopyMemory( (LPVOID)lp16JoyCaps, (LPVOID)&JoyCaps16, (UINT)dwParam2 );
}
break;
case JDD_GETNUMDEVS:
dwRet = joyGetNumDevs();
break;
case JDD_GETPOS:
dwRet = joyGetPos( uID, &JoyInfo32 );
if ( dwRet == MMSYSERR_NOERROR ) {
lp16JoyInfo = GETVDMPTR( dwParam1 );
lp16JoyInfo->wXpos = LOWORD( JoyInfo32.wXpos );
lp16JoyInfo->wYpos = LOWORD( JoyInfo32.wYpos );
lp16JoyInfo->wZpos = LOWORD( JoyInfo32.wZpos );
lp16JoyInfo->wButtons = LOWORD( JoyInfo32.wButtons );
}
break;
}
trace_joy(( "-> 0x%X", dwRet ));
return dwRet;
}
/******************************Public*Routine******************************\
* mxd32Message
*
* 32 bit thunk function. On NT all the 16 bit mixer apis get routed to
* here.
*
* History:
* 22-11-93 - StephenE - Created
*
\**************************************************************************/
DWORD CALLBACK
mxd32Message(
UINT uId,
UINT uMsg,
DWORD dwInstance,
DWORD dwParam1,
DWORD dwParam2
)
{
#if DBG
static MSG_NAME name_map[] = {
MXDM_INIT, "mixerInit",
MXDM_GETNUMDEVS, "mixerGetNumDevs",
MXDM_GETDEVCAPS, "mixerGetDevCaps",
MXDM_OPEN, "mixerOpen",
MXDM_GETLINEINFO, "mixerGetLineInfo",
MXDM_GETLINECONTROLS, "mixerGetLineControls",
MXDM_GETCONTROLDETAILS, "mixerGetControlsDetails",
MXDM_SETCONTROLDETAILS, "mixerSetControlsDetails"
};
int i;
int n;
#endif
DWORD dwRet = MMSYSERR_NOTSUPPORTED;
DWORD fdwOpen;
LPVOID lpOldAddress;
LPMIXERCONTROLDETAILS pmxcd;
LPMIXERLINECONTROLSA pmxlc;
MIXERCONTROLDETAILS mxcdA;
HMIXEROBJ hmixobj;
MIXERCAPSA caps32;
MIXERCAPS16 caps16;
LPMIXERCAPS16 lpcaps16;
MIXERLINEA line32;
LPMIXERLINE16 lpline16;
LPMIXEROPENDESC16 lpmxod16;
HMIXER UNALIGNED *phmx;
HMIXER hmx;
#if DBG
for( i = 0, n = sizeof(name_map) / sizeof(name_map[0]); i < n; i++ ) {
if ( name_map[i].uMsg == uMsg ) {
break;
}
}
if ( i != n ) {
trace_mix(( "mxd32Message( %s, 0x%X, 0x%X, 0x%X)",
name_map[i].lpstrName, dwInstance, dwParam1, dwParam2 ));
}
else {
trace_mix(( "mxd32Message( 0x%X, 0x%X, 0x%X, 0x%X)",
uMsg, dwInstance, dwParam1, dwParam2 ));
}
#endif
if ( dwInstance == 0L ) {
hmixobj = (HMIXEROBJ)uId;
}
else {
hmixobj = (HMIXEROBJ)dwInstance;
}
switch ( uMsg ) {
case MXDM_INIT:
dwRet = 0;
break;
case MXDM_GETNUMDEVS:
dwRet = mixerGetNumDevs();
break;
case MXDM_CLOSE:
dwRet = mixerClose( (HMIXER)dwInstance );
break;
case MXDM_GETDEVCAPS:
dwRet = mixerGetDevCapsA( uId, &caps32, sizeof(caps32) );
if ( dwRet == MMSYSERR_NOERROR ) {
lpcaps16 = GETVDMPTR( dwParam1 );
caps16.wMid = caps32.wMid;
caps16.wPid = caps32.wPid;
caps16.vDriverVersion = LOWORD( caps32.vDriverVersion );
CopyMemory( caps16.szPname, caps32.szPname, MAXPNAMELEN );
caps16.fdwSupport = caps32.fdwSupport;
caps16.cDestinations = caps32.cDestinations;
CopyMemory( (LPVOID)lpcaps16, (LPVOID)&caps16, (UINT)dwParam2 );
}
break;
case MXDM_OPEN:
lpmxod16 = GETVDMPTR( dwParam1 );
/*
** fdwOpen has already mapped all device handles into device ID's on
** the 16 bit side. Therefore mangle the flags to reflect this.
*/
fdwOpen = (DWORD)lpmxod16->pReserved0;
if ( ( fdwOpen & CALLBACK_TYPEMASK ) == CALLBACK_WINDOW ) {
lpmxod16->dwCallback = (DWORD)HWND32(LOWORD(lpmxod16->dwCallback));
}
else if ( ( fdwOpen & CALLBACK_TYPEMASK ) == CALLBACK_TASK ) {
lpmxod16->dwCallback = GetCurrentThreadId();
}
dwRet = mixerOpen( &hmx, dwParam2, lpmxod16->dwCallback,
lpmxod16->dwInstance, fdwOpen );
if ( dwRet == MMSYSERR_NOERROR ) {
SetWOWHandle( hmx, lpmxod16->hmx );
phmx = GETVDMPTR( dwInstance );
*phmx = hmx;
}
break;
case MXDM_GETLINEINFO:
lpline16 = GETVDMPTR( dwParam1 );
GetLineInfo( lpline16, &line32 );
dwRet = mixerGetLineInfoA( hmixobj, &line32, dwParam2 );
if ( dwRet == MMSYSERR_NOERROR ) {
PutLineInfo( lpline16, &line32 );
}
break;
case MXDM_GETLINECONTROLS:
pmxlc = (LPMIXERLINECONTROLSA)GETVDMPTR( dwParam1 );
lpOldAddress = pmxlc->pamxctrl;
pmxlc->pamxctrl = GETVDMPTR( lpOldAddress );
dwRet = mixerGetLineControlsA(hmixobj, pmxlc, dwParam2);
pmxlc->pamxctrl = lpOldAddress;
break;
/*
** CAREFUL !!!
**
** The ONLY reason we don't copy the details themselves is because
** somewhere down the line (usually in the IO subsystem) they're
** copied anyway
*/
case MXDM_GETCONTROLDETAILS:
pmxcd = (LPMIXERCONTROLDETAILS)GETVDMPTR( dwParam1 );
CopyMemory(&mxcdA, pmxcd, sizeof(mxcdA));
mxcdA.paDetails = GETVDMPTR( pmxcd->paDetails );
dwRet = mixerGetControlDetailsA(hmixobj, &mxcdA, dwParam2);
break;
case MXDM_SETCONTROLDETAILS:
pmxcd = (LPMIXERCONTROLDETAILS)GETVDMPTR( dwParam1 );
CopyMemory(&mxcdA, pmxcd, sizeof(mxcdA));
mxcdA.paDetails = GETVDMPTR( pmxcd->paDetails );
dwRet = mixerSetControlDetails( hmixobj, &mxcdA, dwParam2 );
break;
default:
dprintf3(( "Unkown mixer message 0x%X", uMsg ));
dwRet = mixerMessage( (HMIXER)hmixobj, uMsg, dwParam1, dwParam2 );
break;
}
dprintf3(( "-> 0x%X", dwRet ));
return dwRet;
}
/*****************************Private*Routine******************************\
* GetLineInfo
*
* Copies fields from the 16 bit line info structure to the 32 bit line info
* structure.
*
* History:
* 22-11-93 - StephenE - Created
*
\**************************************************************************/
void
GetLineInfo(
LPMIXERLINE16 lpline16,
LPMIXERLINEA lpline32
)
{
CopyMemory( lpline32, (LPVOID)lpline16, FIELD_OFFSET(MIXERLINEA, Target.vDriverVersion ) );
lpline32->Target.vDriverVersion = (DWORD)lpline16->Target.vDriverVersion;
CopyMemory( lpline32->Target.szPname, lpline16->Target.szPname, MAXPNAMELEN );
lpline32->cbStruct += sizeof(UINT) - sizeof(WORD);
}
/*****************************Private*Routine******************************\
* PutLineInfo
*
* Copies fields from the 32 bit line info structure to the 16 bit line info
* structure.
*
* History:
* 22-11-93 - StephenE - Created
*
\**************************************************************************/
void
PutLineInfo(
LPMIXERLINE16 lpline16,
LPMIXERLINEA lpline32
)
{
CopyMemory( (LPVOID)lpline16, lpline32, FIELD_OFFSET(MIXERLINEA, Target.vDriverVersion ) );
lpline16->Target.vDriverVersion = (WORD)lpline32->Target.vDriverVersion;
CopyMemory( lpline16->Target.szPname, lpline32->Target.szPname, MAXPNAMELEN );
lpline16->cbStruct -= sizeof(UINT) - sizeof(WORD);
}
/******************************Public*Routine******************************\
* WOW32ResolveMultiMediaHandle
*
*
*
* History:
* dd-mm-93 - StephenE - Created
*
\**************************************************************************/
BOOL APIENTRY
WOW32ResolveMultiMediaHandle(
UINT uHandleType,
UINT uMappingDirection,
WORD wHandle16_In,
LPWORD lpwHandle16_Out,
DWORD dwHandle32_In,
LPDWORD lpdwHandle32_Out
)
{
BOOL fReturn = FALSE;
DWORD dwHandle32;
WORD wHandle16;
HANDLE h;
/*
** Protect ourself from being given a duff pointer.
*/
try {
if ( uMappingDirection == WOW32_DIR_16IN_32OUT ) {
dwHandle32 = 0L;
if ( wHandle16_In != 0 ) {
switch ( uHandleType ) {
case WOW32_WAVEIN_HANDLE:
case WOW32_WAVEOUT_HANDLE:
case WOW32_MIDIOUT_HANDLE:
case WOW32_MIDIIN_HANDLE:
EnterCriticalSection(&HandleListCritSec);
h = GetHandleFirst();
while ( h ) {
if ( GetWOWHandle(h) == wHandle16_In ) {
dwHandle32 = (DWORD)h;
break;
}
h = GetHandleNext(h);
}
LeaveCriticalSection(&HandleListCritSec);
break;
}
*lpdwHandle32_Out = dwHandle32;
if ( dwHandle32 ) {
fReturn = TRUE;
}
}
}
else if ( uMappingDirection == WOW32_DIR_32IN_16OUT ) {
switch ( uHandleType ) {
case WOW32_WAVEIN_HANDLE:
case WOW32_WAVEOUT_HANDLE:
case WOW32_MIDIOUT_HANDLE:
case WOW32_MIDIIN_HANDLE:
wHandle16 = (WORD)GetWOWHandle(dwHandle32_In);
break;
}
*lpwHandle16_Out = wHandle16;
if ( wHandle16 ) {
fReturn = TRUE;
}
}
}
except( EXCEPTION_EXECUTE_HANDLER ) {
fReturn = FALSE;
}
return fReturn;
}
#endif // _WIN64