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/**
*
* Lame ACM wrapper, encode/decode MP3 based RIFF/AVI files in MS Windows
*
* Copyright (c) 2002 Steve Lhomme <steve.lhomme at free.fr>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
*/
/*!
\author Steve Lhomme
\version \$Id: main.cpp,v 1.5 2006/12/25 21:37:34 robert Exp $
*/
#if !defined(STRICT)
#define STRICT
#endif // STRICT
#include <windows.h>
/// The ACM is considered as a driver and run in Kernel-Mode
/// So the new/delete operators have to be overriden in order to use memory
/// readable out of the calling process
void * operator new( unsigned int cb )
{
return LocalAlloc(LPTR, cb); // VirtualAlloc
}
void operator delete(void *block) {
LocalFree(block);
}
extern "C" {
void *acm_Calloc( size_t num, size_t size )
{
return LocalAlloc(LPTR, num * size); // VirtualAlloc
}
void *acm_Malloc( size_t size )
{
return LocalAlloc(LPTR, size); // VirtualAlloc
}
void acm_Free( void * mem)
{
LocalFree(mem);
}
};
////// End of memory instrumentation
#include <mmreg.h>
#include <msacm.h>
#include <msacmdrv.h>
#include <assert.h>
#include "AEncodeProperties.h"
#include "ACM.h"
#include "resource.h"
#include "adebug.h"
ADbg * debug = NULL;
LONG WINAPI DriverProc(DWORD dwDriverId, HDRVR hdrvr, UINT msg, LONG lParam1, LONG lParam2)
{
switch (msg)
{
case DRV_OPEN: // acmDriverOpen
{
if (debug == NULL) {
debug = new ADbg(DEBUG_LEVEL_CREATION);
debug->setPrefix("LAMEdrv");
}
if (debug != NULL)
{
// Sent when the driver is opened.
if (lParam2 != NULL)
debug->OutPut(DEBUG_LEVEL_MSG, "DRV_OPEN (ID 0x%08X), pDesc = 0x%08X",dwDriverId,lParam2);
else
debug->OutPut(DEBUG_LEVEL_MSG, "DRV_OPEN (ID 0x%08X), pDesc = NULL",dwDriverId);
}
if (lParam2 != NULL) {
LPACMDRVOPENDESC pDesc = (LPACMDRVOPENDESC)lParam2;
if (pDesc->fccType != ACMDRIVERDETAILS_FCCTYPE_AUDIOCODEC) {
if (debug != NULL)
{
debug->OutPut(DEBUG_LEVEL_FUNC_CODE, "wrong pDesc->fccType (0x%08X)",pDesc->fccType);
}
return NULL;
}
} else {
if (debug != NULL)
{
debug->OutPut(DEBUG_LEVEL_FUNC_CODE, "pDesc == NULL");
}
}
ACM * ThisACM = new ACM(GetDriverModuleHandle(hdrvr));
if (debug != NULL)
{
debug->OutPut(DEBUG_LEVEL_FUNC_CODE, "OPENED instance 0x%08X",ThisACM);
}
return (LONG)ThisACM;// returns 0L to fail
// value subsequently used
// for dwDriverId.
}
break;
case DRV_CLOSE: // acmDriverClose
{
if (debug != NULL)
{
// Sent when the driver is closed. Drivers are
// unloaded when the open count reaches zero.
debug->OutPut(DEBUG_LEVEL_MSG, "DRV_CLOSE");
}
ACM * ThisACM = (ACM *)dwDriverId;
delete ThisACM;
if (debug != NULL)
{
debug->OutPut(DEBUG_LEVEL_FUNC_CODE, "CLOSED instance 0x%08X",ThisACM);
delete debug;
debug = NULL;
}
return 1L; // returns 0L to fail
}
break;
case DRV_LOAD:
{
// nothing to do
if (debug != NULL)
{
// debug->OutPut(DEBUG_LEVEL_MSG, "DRV_LOAD, version %s %s %s", ACM_VERSION, __DATE__, __TIME__);
debug->OutPut(DEBUG_LEVEL_MSG, "DRV_LOAD, %s %s", __DATE__, __TIME__);
}
return 1L;
}
break;
case DRV_ENABLE:
{
// nothing to do
if (debug != NULL)
{
debug->OutPut(DEBUG_LEVEL_MSG, "DRV_ENABLE");
}
return 1L;
}
break;
case DRV_DISABLE:
{
// nothing to do
if (debug != NULL)
{
debug->OutPut(DEBUG_LEVEL_MSG, "DRV_DISABLE");
}
return 1L;
}
break;
case DRV_FREE:
{
if (debug != NULL)
{
debug->OutPut(DEBUG_LEVEL_MSG, "DRV_FREE");
}
return 1L;
}
break;
default:
{
ACM * ThisACM = (ACM *)dwDriverId;
if (ThisACM != NULL)
return ThisACM->DriverProcedure(hdrvr, msg, lParam1, lParam2);
else
{
if (debug != NULL)
{
debug->OutPut(DEBUG_LEVEL_MSG, "Driver not opened, unknown message (0x%08X), lParam1 = 0x%08X, lParam2 = 0x%08X", msg, lParam1, lParam2);
}
return DefDriverProc (dwDriverId, hdrvr, msg, lParam1, lParam2);
}
}
break;
}
}
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