diff options
Diffstat (limited to 'board/MAI/bios_emulator/scitech/src/common/aalib.c')
| -rw-r--r-- | board/MAI/bios_emulator/scitech/src/common/aalib.c | 225 |
1 files changed, 225 insertions, 0 deletions
diff --git a/board/MAI/bios_emulator/scitech/src/common/aalib.c b/board/MAI/bios_emulator/scitech/src/common/aalib.c new file mode 100644 index 0000000000..84bf7b3d8f --- /dev/null +++ b/board/MAI/bios_emulator/scitech/src/common/aalib.c @@ -0,0 +1,225 @@ +/**************************************************************************** +* +* SciTech Nucleus Audio Architecture +* +* Copyright (C) 1991-1998 SciTech Software, Inc. +* All rights reserved. +* +* ====================================================================== +* |REMOVAL OR MODIFICATION OF THIS HEADER IS STRICTLY PROHIBITED BY LAW| +* | | +* |This copyrighted computer code contains proprietary technology | +* |owned by SciTech Software, Inc., located at 505 Wall Street, | +* |Chico, CA 95928 USA (http://www.scitechsoft.com). | +* | | +* |The contents of this file are subject to the SciTech Nucleus | +* |License; you may *not* use this file or related software except in | +* |compliance with the License. You may obtain a copy of the License | +* |at http://www.scitechsoft.com/nucleus-license.txt | +* | | +* |Software distributed under the License is distributed on an | +* |"AS IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or | +* |implied. See the License for the specific language governing | +* |rights and limitations under the License. | +* | | +* |REMOVAL OR MODIFICATION OF THIS HEADER IS STRICTLY PROHIBITED BY LAW| +* ====================================================================== +* +* Language: ANSI C +* Environment: Any 32-bit protected mode environment +* +* Description: C module for the Graphics Accelerator Driver API. Uses +* the SciTech PM library for interfacing with DOS +* extender specific functions. +* +****************************************************************************/ + +#include "nucleus/audio.h" +#ifdef __WIN32_VXD__ +#include "sdd/sddhelp.h" +#else +#include <stdio.h> +#include <stdlib.h> +#endif + +/*---------------------------- Global Variables ---------------------------*/ + +#ifdef TEST_HARNESS +extern PM_imports _VARAPI _PM_imports; +#else +AA_exports _VARAPI _AA_exports; +static int loaded = false; +static PE_MODULE *hModBPD = NULL; + +#ifdef __DRIVER__ +extern PM_imports _PM_imports; +#else +#include "pmimp.h" +#endif + +static N_imports _N_imports = { + sizeof(N_imports), + _OS_delay, + }; + +#ifdef __DRIVER__ +extern AA_imports _AA_imports; +#else +static AA_imports _AA_imports = { + sizeof(AA_imports), + }; +#endif +#endif + +/*----------------------------- Implementation ----------------------------*/ + +#define DLL_NAME "audio.bpd" + +#ifndef TEST_HARNESS +/**************************************************************************** +REMARKS: +Fatal error handler for non-exported AA_exports. +****************************************************************************/ +static void _AA_fatalErrorHandler(void) +{ + PM_fatalError("Unsupported Nucleus export function called! Please upgrade your copy of Nucleus!\n"); +} + +/**************************************************************************** +REMARKS: +Loads the Nucleus binary portable DLL into memory and initilises it. +****************************************************************************/ +static ibool LoadDriver(void) +{ + AA_initLibrary_t AA_initLibrary; + AA_exports *aaExp; + char filename[PM_MAX_PATH]; + char bpdpath[PM_MAX_PATH]; + int i,max; + ulong *p; + + /* Check if we have already loaded the driver */ + if (loaded) + return true; + PM_init(); + _AA_exports.dwSize = sizeof(_AA_exports); + + /* Open the BPD file */ + if (!PM_findBPD(DLL_NAME,bpdpath)) + return false; + strcpy(filename,bpdpath); + strcat(filename,DLL_NAME); + if ((hModBPD = PE_loadLibrary(filename,false)) == NULL) + return false; + if ((AA_initLibrary = (AA_initLibrary_t)PE_getProcAddress(hModBPD,"_AA_initLibrary")) == NULL) + return false; + bpdpath[strlen(bpdpath)-1] = 0; + if (strcmp(bpdpath,PM_getNucleusPath()) == 0) + strcpy(bpdpath,PM_getNucleusConfigPath()); + else { + PM_backslash(bpdpath); + strcat(bpdpath,"config"); + } + if ((aaExp = AA_initLibrary(bpdpath,filename,&_PM_imports,&_N_imports,&_AA_imports)) == NULL) + PM_fatalError("AA_initLibrary failed!\n"); + + /* Initialize all default imports to point to fatal error handler + * for upwards compatibility, and copy the exported functions. + */ + max = sizeof(_AA_exports)/sizeof(AA_initLibrary_t); + for (i = 0,p = (ulong*)&_AA_exports; i < max; i++) + *p++ = (ulong)_AA_fatalErrorHandler; + memcpy(&_AA_exports,aaExp,MIN(sizeof(_AA_exports),aaExp->dwSize)); + loaded = true; + return true; +} + +/* The following are stub entry points that the application calls to + * initialise the Nucleus loader library, and we use this to load our + * driver DLL from disk and initialise the library using it. + */ + +/* {secret} */ +int NAPI AA_status(void) +{ + if (!loaded) + return nDriverNotFound; + return _AA_exports.AA_status(); +} + +/* {secret} */ +const char * NAPI AA_errorMsg( + N_int32 status) +{ + if (!loaded) + return "Unable to load Nucleus device driver!"; + return _AA_exports.AA_errorMsg(status); +} + +/* {secret} */ +int NAPI AA_getDaysLeft(void) +{ + if (!LoadDriver()) + return -1; + return _AA_exports.AA_getDaysLeft(); +} + +/* {secret} */ +int NAPI AA_registerLicense(uchar *license) +{ + if (!LoadDriver()) + return 0; + return _AA_exports.AA_registerLicense(license); +} + +/* {secret} */ +int NAPI AA_enumerateDevices(void) +{ + if (!LoadDriver()) + return 0; + return _AA_exports.AA_enumerateDevices(); +} + +/* {secret} */ +AA_devCtx * NAPI AA_loadDriver(N_int32 deviceIndex) +{ + if (!LoadDriver()) + return NULL; + return _AA_exports.AA_loadDriver(deviceIndex); +} +#endif + +typedef struct { + N_uint32 low; + N_uint32 high; + } AA_largeInteger; + +void NAPI _OS_delay8253(N_uint32 microSeconds); +ibool NAPI _GA_haveCPUID(void); +uint NAPI _GA_getCPUIDFeatures(void); +void NAPI _GA_readTimeStamp(AA_largeInteger *time); +#define CPU_HaveRDTSC 0x00000010 + +/**************************************************************************** +REMARKS: +This function delays for the specified number of microseconds +****************************************************************************/ +void NAPI _OS_delay( + N_uint32 microSeconds) +{ + static ibool inited = false; + LZTimerObject tm; + + if (_GA_haveCPUID() && (_GA_getCPUIDFeatures() & CPU_HaveRDTSC) != 0) { + if (!inited) { + ZTimerInit(); + inited = true; + } + LZTimerOnExt(&tm); + while (LZTimerLapExt(&tm) < microSeconds) + ; + LZTimerOnExt(&tm); + } + else + _OS_delay8253(microSeconds); +} |
