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main.c
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#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <ctype.h>
#include <conio.h>
#include <stdbool.h>
#include <dos.h>
#include <dpmi/dbgutil.h>
#include <sbemucfg.h>
#include <pic.h>
#include <opl3emu.h>
#include <vdma.h>
#include <virq.h>
#include <sbemu.h>
#include <untrapio.h>
#include "qemm.h"
#include "hdpmipt.h"
#include "serial.h"
#include <au_cards/au_cards.h>
static const char *
PROGNAME = "SBEMU";
#ifndef MAIN_SBEMU_VER
#define MAIN_SBEMU_VER "1.0 beta3"
#endif
#define MAIN_TRAP_PIC_ONDEMAND 1
#define MAIN_INSTALL_RM_ISR 1 //not needed. but to workaround some rm games' problem. need RAW_HOOk in dpmi_dj2.c
#define MAIN_DOUBLE_OPL_VOLUME 1 //hack: double the amplitude of OPL PCM. should be 1 or 0
#define MAIN_TSR_INT 0x2D //AMIS multiplex. TODO: 0x2F?
#define MAIN_TSR_INTSTART_ID 0x01 //start id
mpxplay_audioout_info_s aui = {0};
#define MAIN_PCM_SAMPLESIZE 16384
static int16_t MAIN_OPLPCM[MAIN_PCM_SAMPLESIZE+256];
static int16_t MAIN_PCM[MAIN_PCM_SAMPLESIZE+256];
static DPMI_ISR_HANDLE MAIN_IntHandlePM;
static DPMI_ISR_HANDLE MAIN_IntHandleRM;
static DPMI_REG MAIN_IntREG;
static INTCONTEXT MAIN_IntContext;
static uint32_t MAIN_DMA_Addr = 0;
static uint32_t MAIN_DMA_Size = 0;
static uint32_t MAIN_DMA_MappedAddr = 0;
static uint8_t MAIN_QEMM_Present = 0;
static uint8_t MAIN_HDPMI_Present = 0;
static uint8_t MAIN_InINT;
SBEMU_EXTFUNS MAIN_SbemuExtFun;
static void MAIN_Interrupt();
static void MAIN_InterruptPM();
static void MAIN_InterruptRM();
static DPMI_ISR_HANDLE MAIN_TSRIntHandle;
static DPMI_REG MAIN_TSRREG;
static uint32_t MAIN_TSR_INT_FNO = MAIN_TSR_INTSTART_ID;
static uint32_t MAIN_ISR_DOSID;
static const char MAIN_ISR_DOSID_String[] = "Crazii SBEMU Sound Blaster emulation on AC97"; //8:8:asciiz
static void MAIN_TSR_InstallationCheck();
static void MAIN_TSR_Interrupt();
static uint32_t MAIN_OPL3_388(uint32_t port, uint32_t val, uint32_t out)
{
return out ? OPL3EMU_PrimaryWriteIndex(val) : OPL3EMU_PrimaryRead(val);
}
static uint32_t MAIN_OPL3_389(uint32_t port, uint32_t val, uint32_t out)
{
return out ? OPL3EMU_PrimaryWriteData(val) : OPL3EMU_PrimaryRead(val);
}
static uint32_t MAIN_OPL3_38A(uint32_t port, uint32_t val, uint32_t out)
{
return out ? OPL3EMU_SecondaryWriteIndex(val) : OPL3EMU_SecondaryRead(val);
}
static uint32_t MAIN_OPL3_38B(uint32_t port, uint32_t val, uint32_t out)
{
return out ? OPL3EMU_SecondaryWriteData(val) : OPL3EMU_SecondaryRead(val);
}
static uint32_t MAIN_DMA(uint32_t port, uint32_t val, uint32_t out)
{
return out ? (VDMA_Write(port, val), val) : (val &=~0xFF, val |= VDMA_Read(port));
}
static uint32_t MAIN_IRQ(uint32_t port, uint32_t val, uint32_t out)
{
return out ? (VIRQ_Write(port, val), val) : (val &=~0xFF, val |= VIRQ_Read(port));
}
static uint32_t MAIN_SB_MixerAddr(uint32_t port, uint32_t val, uint32_t out)
{
return out ? (SBEMU_Mixer_WriteAddr(port, val), val) : val;
}
static uint32_t MAIN_SB_MixerData(uint32_t port, uint32_t val, uint32_t out)
{
return out ? (SBEMU_Mixer_Write(port, val), val) : (val &=~0xFF, val |= SBEMU_Mixer_Read(port));
}
static uint32_t MAIN_SB_DSP_Reset(uint32_t port, uint32_t val, uint32_t out)
{
return out ? (SBEMU_DSP_Reset(port, val), val) : val;
}
static uint32_t MAIN_SB_DSP_Read(uint32_t port, uint32_t val, uint32_t out)
{
return out ? val : (val &=~0xFF, val |= SBEMU_DSP_Read(port));
}
static uint32_t MAIN_SB_DSP_Write(uint32_t port, uint32_t val, uint32_t out)
{
return out ? (SBEMU_DSP_Write(port, val), val) : SBEMU_DSP_WriteStatus(port);
}
static uint32_t MAIN_SB_DSP_ReadStatus(uint32_t port, uint32_t val, uint32_t out)
{
return out ? val : (val &=~0xFF, val |= SBEMU_DSP_ReadStatus(port));
}
static uint32_t MAIN_SB_DSP_ReadINT16BitACK(uint32_t port, uint32_t val, uint32_t out)
{
return out ? val : (val &=~0xFF, val |= SBEMU_DSP_INT16ACK(port));
}
static QEMM_IODT MAIN_OPL3IODT[4] =
{
0x388, &MAIN_OPL3_388,
0x389, &MAIN_OPL3_389,
0x38A, &MAIN_OPL3_38A,
0x38B, &MAIN_OPL3_38B
};
static QEMM_IODT MAIN_VDMA_IODT[40] =
{
0x00, &MAIN_DMA,
0x01, &MAIN_DMA,
0x02, &MAIN_DMA,
0x03, &MAIN_DMA,
0x04, &MAIN_DMA,
0x05, &MAIN_DMA,
0x06, &MAIN_DMA,
0x07, &MAIN_DMA,
0x08, &MAIN_DMA,
0x09, &MAIN_DMA,
0x0A, &MAIN_DMA,
0x0B, &MAIN_DMA,
0x0C, &MAIN_DMA,
0x0D, &MAIN_DMA,
0x0E, &MAIN_DMA,
0x0F, &MAIN_DMA,
0x81, &MAIN_DMA,
0x82, &MAIN_DMA,
0x83, &MAIN_DMA,
0x87, &MAIN_DMA,
0xC0, &MAIN_DMA,
0xC2, &MAIN_DMA,
0xC4, &MAIN_DMA,
0xC6, &MAIN_DMA,
0xC8, &MAIN_DMA,
0xCA, &MAIN_DMA,
0xCC, &MAIN_DMA,
0xCE, &MAIN_DMA,
0xD0, &MAIN_DMA,
0xD2, &MAIN_DMA,
0xD4, &MAIN_DMA,
0xD6, &MAIN_DMA,
0xD8, &MAIN_DMA,
0xDA, &MAIN_DMA,
0xDC, &MAIN_DMA,
0xDE, &MAIN_DMA,
0x89, &MAIN_DMA,
0x8A, &MAIN_DMA,
0x8B, &MAIN_DMA,
0x8F, &MAIN_DMA,
};
static QEMM_IODT MAIN_VIRQ_IODT[4] =
{
0x20, &MAIN_IRQ,
0x21, &MAIN_IRQ,
0xA0, &MAIN_IRQ,
0xA1, &MAIN_IRQ,
};
static QEMM_IODT MAIN_SB_IODT[13] =
{ //MAIN_Options[OPT_ADDR].value will be added at runtime
0x00, &MAIN_OPL3_388,
0x01, &MAIN_OPL3_389,
0x02, &MAIN_OPL3_38A,
0x03, &MAIN_OPL3_38B,
0x04, &MAIN_SB_MixerAddr,
0x05, &MAIN_SB_MixerData,
0x06, &MAIN_SB_DSP_Reset,
0x08, &MAIN_OPL3_388,
0x09, &MAIN_OPL3_389,
0x0A, &MAIN_SB_DSP_Read,
0x0C, &MAIN_SB_DSP_Write,
0x0E, &MAIN_SB_DSP_ReadStatus,
0x0F, &MAIN_SB_DSP_ReadINT16BitACK,
};
QEMM_IOPT OPL3IOPT;
QEMM_IOPT OPL3IOPT_PM;
QEMM_IOPT MAIN_VDMA_IOPT;
QEMM_IOPT MAIN_VIRQ_IOPT;
QEMM_IOPT MAIN_SB_IOPT;
QEMM_IOPT MAIN_VDMA_IOPT_PM1;
QEMM_IOPT MAIN_VDMA_IOPT_PM2;
QEMM_IOPT MAIN_VDMA_IOPT_PM3;
QEMM_IOPT MAIN_VHDMA_IOPT_PM1;
QEMM_IOPT MAIN_VHDMA_IOPT_PM2;
QEMM_IOPT MAIN_VHDMA_IOPT_PM3;
QEMM_IOPT MAIN_VIRQ_IOPT_PM1;
QEMM_IOPT MAIN_VIRQ_IOPT_PM2;
QEMM_IOPT MAIN_SB_IOPT_PM;
#define MAIN_SETCMD_SET 0x01 //set in command line
#define MAIN_SETCMD_HIDDEN 0x02 //hidden flag on report
struct MAIN_OPT
{
const char* option;
const char* desc;
int value;
int setcmd; //set by command line
}MAIN_Options[] =
{
"/?", "Show this help screen", FALSE, 0,
"/DBG", "Debug output (0=console, 1=COM1, 2=COM2)", 0, 0,
"/A", "IO address (220 or 240) [*]", 0x220, 0,
"/I", "IRQ number (5 or 7) [*]", 7, 0,
"/D", "8-bit DMA channel (0, 1 or 3) [*]", 1, 0,
"/T", "SB Type (1, 2 or 3=SB; 4 or 5=SBPro; 6=SB16) [*]", 5, 0,
"/H", "16-bit (\"high\") DMA channel (5, 6 or 7) [*]", 5, 0,
"/OPL", "Enable OPL3 emulation", TRUE, 0,
"/PM", "Enable protected mode support (requires HDPMI32I)", TRUE, 0,
"/RM", "Enable real mode support (requires QEMM or JEMM+QPIEMU)", TRUE, 0,
"/O", "Select output. 0: headphone, 1: speaker. Intel HDA only", 1, 0,
"/VOL", "Set master volume (0-9)", 7, 0,
"/K", "Internal sample rate (22050 or 44100)", 0x22050, 0,
"/FIXTC", "Fix time constant to match 11/22/44 kHz sample rate", FALSE, 0,
"/SCL", "List installed sound cards", 0, MAIN_SETCMD_HIDDEN,
"/SC", "Select sound card index in list (/SCL)", 0, MAIN_SETCMD_HIDDEN,
"/R", "Reset sound card driver", 0, MAIN_SETCMD_HIDDEN,
NULL, NULL, 0,
};
enum EOption
{
OPT_Help,
OPT_DEBUG_OUTPUT,
OPT_ADDR,
OPT_IRQ,
OPT_DMA,
OPT_TYPE,
OPT_HDMA,
OPT_OPL,
OPT_PM,
OPT_RM,
OPT_OUTPUT,
OPT_VOL,
OPT_RATE,
OPT_FIX_TC,
OPT_SCLIST,
OPT_SC,
OPT_RESET,
OPT_COUNT,
};
//T1~T6 maps
static const char* MAIN_SBTypeString[] =
{
"0",
"1.0/1.5",
"Pro (old)",
"2.0",
"Pro",
"Pro",
"16",
};
static int MAIN_SB_DSPVersion[] =
{
0,
0x0100,
0x0300,
0x0202,
0x0302,
0x0302,
0x0400,
};
static void MAIN_InvokeIRQ(uint8_t irq) //generate virtual IRQ
{
#if MAIN_TRAP_PIC_ONDEMAND
if(MAIN_Options[OPT_RM].value) QEMM_Install_IOPortTrap(MAIN_VIRQ_IODT, countof(MAIN_VIRQ_IODT), &MAIN_VIRQ_IOPT);
if(MAIN_Options[OPT_PM].value)
{
HDPMIPT_Install_IOPortTrap(0x20, 0x21, MAIN_VIRQ_IODT, 2, &MAIN_VIRQ_IOPT_PM1);
HDPMIPT_Install_IOPortTrap(0xA0, 0xA1, MAIN_VIRQ_IODT+2, 2, &MAIN_VIRQ_IOPT_PM2);
}
#endif
VIRQ_Invoke(irq, &MAIN_IntContext.regs, MAIN_IntContext.EFLAGS&CPU_VMFLAG);
#if MAIN_TRAP_PIC_ONDEMAND
if(MAIN_Options[OPT_RM].value) QEMM_Uninstall_IOPortTrap(&MAIN_VIRQ_IOPT);
if(MAIN_Options[OPT_PM].value)
{
HDPMIPT_Uninstall_IOPortTrap(&MAIN_VIRQ_IOPT_PM1);
HDPMIPT_Uninstall_IOPortTrap(&MAIN_VIRQ_IOPT_PM2);
}
#endif
}
static void MAIN_SetBlasterEnv(struct MAIN_OPT* opt) //alter BLASTER env.
{
char buf[256];
if(opt[OPT_TYPE].value != 6)
sprintf(buf, "A%x I%x D%x", opt[OPT_ADDR].value, opt[OPT_IRQ].value, opt[OPT_DMA].value);
else
sprintf(buf, "A%x I%x D%x T%x H%x", opt[OPT_ADDR].value, opt[OPT_IRQ].value, opt[OPT_DMA].value, opt[OPT_TYPE].value, opt[OPT_HDMA].value);
#ifdef DJGPP //makes vscode happy
setenv("BLASTER", buf, TRUE);
#endif
}
static void
print_enabled_newline(bool enabled)
{
if (enabled) {
textcolor(LIGHTGREEN);
cprintf("enabled");
} else {
textcolor(LIGHTRED);
cprintf("disabled");
}
textcolor(LIGHTGRAY);
cprintf(".\r\n");
}
static void
update_serial_debug_output()
{
bool enabled = (MAIN_Options[OPT_DEBUG_OUTPUT].value != 0);
if (!enabled) {
_LOG("Serial port debugging disabled.\n");
}
ser_setup(MAIN_Options[OPT_DEBUG_OUTPUT].value);
if (enabled) {
_LOG("Serial port debugging enabled.\n");
}
}
int main(int argc, char* argv[])
{
textcolor(CYAN);
cprintf("\r\n%s ", PROGNAME);
textcolor(LIGHTCYAN);
cprintf("%s ", MAIN_SBEMU_VER);
textcolor(LIGHTGRAY);
cprintf("(");
textcolor(WHITE);
cprintf("https://github.com/crazii/SBEMU");
textcolor(LIGHTGRAY);
cprintf(")\r\n");
textcolor(WHITE);
cprintf("Sound Blaster emulation on PCI sound cards for DOS.\r\n");
textcolor(LIGHTGRAY);
cprintf("Based on MPXPlay (drivers) and DOSBox (OPL-3 emulation).\r\n");
printf("\n");
if((argc == 2 && stricmp(argv[1],"/?") == 0))
{
printf("Usage:\n");
int i = 0;
while(MAIN_Options[i].option)
{
printf(" %-7s: %s", MAIN_Options[i].option, MAIN_Options[i].desc);
if (i != 0) {
printf(", default: %x.\n", MAIN_Options[i].value);
} else {
printf(".\n");
}
++i;
}
printf("\n");
printf(" [*] Values will default to the BLASTER variable if not specified.\n");
return 0;
}
//parse BLASTER env first.
{
char* blaster = getenv("BLASTER");
if(blaster != NULL)
{
char c;
while((c=toupper(*(blaster++))))
{
if(c == 'I')
MAIN_Options[OPT_IRQ].value = *(blaster++) - '0';
else if(c == 'D')
MAIN_Options[OPT_DMA].value = *(blaster++) - '0';
else if(c == 'A')
MAIN_Options[OPT_ADDR].value = strtol(blaster, &blaster, 16);
else if(c =='T')
MAIN_Options[OPT_TYPE].value = *(blaster++) - '0';
else if(c =='H')
MAIN_Options[OPT_HDMA].value = *(blaster++) - '0';
}
}
}
for(int i = 1; i < argc; ++i)
{
for(int j = 0; j < OPT_COUNT; ++j)
{
int len = strlen(MAIN_Options[j].option);
if(memicmp(argv[i], MAIN_Options[j].option, len) == 0)
{
int arglen = strlen(argv[i]);
MAIN_Options[j].value = arglen == len ? 1 : strtol(&argv[i][len], NULL, 16);
MAIN_Options[j].setcmd |= MAIN_SETCMD_SET;
break;
}
}
}
if (MAIN_Options[OPT_DEBUG_OUTPUT].value) {
update_serial_debug_output();
}
if(MAIN_Options[OPT_ADDR].value != 0x220 && MAIN_Options[OPT_ADDR].value != 0x240)
{
printf("Error: Invalid IO port address: %x.\n", MAIN_Options[OPT_ADDR].value);
return 1;
}
if(MAIN_Options[OPT_IRQ].value != 0x5 && MAIN_Options[OPT_IRQ].value != 0x7)
{
printf("Error: invalid IRQ: %d.\n", MAIN_Options[OPT_IRQ].value);
return 1;
}
if(MAIN_Options[OPT_DMA].value != 0x0 && MAIN_Options[OPT_DMA].value != 0x1 && MAIN_Options[OPT_DMA].value != 0x3)
{
printf("Error: invalid DMA channel.\n");
return 1;
}
if(MAIN_Options[OPT_TYPE].value <= 0 || MAIN_Options[OPT_TYPE].value > 6)
{
printf("Error: invalid SB Type.\n");
return 1;
}
if(MAIN_Options[OPT_OUTPUT].value != 0 && MAIN_Options[OPT_OUTPUT].value != 1)
{
printf("Error: Invalid Output.\n");
return 1;
}
if(MAIN_Options[OPT_VOL].value < 0 || MAIN_Options[OPT_VOL].value > 9)
{
printf("Error: Invalid Volume.\n");
return 1;
}
if(MAIN_Options[OPT_RATE].value != 0x22050 && MAIN_Options[OPT_RATE].value != 0x44100)
{
printf("Error: Invalid Sample rate.\n");
return 1;
}
if(MAIN_Options[OPT_TYPE].value != 6)
MAIN_Options[OPT_HDMA].value = MAIN_Options[OPT_DMA].value; //16 bit transfer through 8 bit dma
DPMI_Init();
MAIN_QEMM_Present = TRUE;
if(MAIN_Options[OPT_RM].value)
{
MAIN_Options[OPT_RM].value = TRUE; //set to known value for compare
int qemm_version = QEMM_GetVersion();
int qemm_major = qemm_version >> 8;
int qemm_minor = qemm_version & 0xFF;
_LOG("QEMM version: %x.%02x\n", qemm_major, qemm_minor);
if (qemm_version < 0x0703) {
if (qemm_major == 0) {
printf("QEMM or QPIEMU not installed, disabling real mode support.\n");
} else {
printf("QEMM or QPIEMU version below 7.03: %d.%02d, disabling real mode support.\n", qemm_major, qemm_minor);
}
MAIN_Options[OPT_RM].value = FALSE;
MAIN_QEMM_Present = FALSE;
}
}
MAIN_HDPMI_Present = FALSE;
if(MAIN_Options[OPT_PM].value)
{
MAIN_Options[OPT_PM].value = TRUE; //set to known value for compare
BOOL hasHDPMI = HDPMIPT_Detect(); //another DPMI host used other than HDPMI
if(!hasHDPMI)
printf("HDPMI not installed, disabling protected mode support.\n");
MAIN_Options[OPT_PM].value = hasHDPMI;
MAIN_HDPMI_Present = hasHDPMI;
}
MAIN_Options[OPT_OPL].value = (MAIN_Options[OPT_OPL].value) ? TRUE : FALSE;
//TSR installation check: update parameter & exit if already installed
MAIN_TSR_InstallationCheck();
MAIN_SetBlasterEnv(MAIN_Options);
BOOL enablePM = MAIN_Options[OPT_PM].value;
BOOL enableRM = MAIN_Options[OPT_RM].value;
if(!enablePM && !enableRM)
{
textcolor(RED);
cprintf("Both real mode & protected mode support are disabled, exiting.\r\n");
textcolor(LIGHTGRAY);
return 1;
}
if(MAIN_Options[OPT_SCLIST].value)
aui.card_controlbits |= AUINFOS_CARDCNTRLBIT_TESTCARD; //note: this bit will make aui.card_handler == NULL and quit.
if(MAIN_Options[OPT_SC].value)
aui.card_select_index = MAIN_Options[OPT_SC].value; //TODO: this is a HEX in commandline, it's OK to not inform user since there's might not be over 10 (0xA) sound cards installed
aui.card_select_config = MAIN_Options[OPT_OUTPUT].value;
AU_init(&aui);
if(!aui.card_handler)
return 1;
if(aui.card_irq == MAIN_Options[OPT_IRQ].value)
{
printf("Sound card IRQ conflict, abort.\n");
printf("Please try use /i5 or /i7 switch, or disable some onboard devices in the BIOS settings to release IRQs.\n");
return 1;
}
printf("Real mode support: ");
print_enabled_newline(enableRM);
printf("Protected mode support: ");
print_enabled_newline(enablePM);
if(enableRM)
{
UntrappedIO_OUT_Handler = &QEMM_UntrappedIO_Write;
UntrappedIO_IN_Handler = &QEMM_UntrappedIO_Read;
}
else
{
UntrappedIO_OUT_Handler = &HDPMIPT_UntrappedIO_Write;
UntrappedIO_IN_Handler = &HDPMIPT_UntrappedIO_Read;
}
if(MAIN_Options[OPT_OPL].value)
{
if(enableRM && !QEMM_Install_IOPortTrap(MAIN_OPL3IODT, 4, &OPL3IOPT))
{
printf("Error: Failed installing IO port trap for QEMM.\n");
return 1;
}
if(enablePM && !HDPMIPT_Install_IOPortTrap(0x388, 0x38B, MAIN_OPL3IODT, 4, &OPL3IOPT_PM))
{
printf("Error: Failed installing IO port trap for HDPMI.\n");
if(enableRM) QEMM_Uninstall_IOPortTrap(&OPL3IOPT);
return 1;
}
//OPL3EMU_Init(aui.freq_card);
printf("OPL3 emulation at port 388: ");
print_enabled_newline(true);
}
MAIN_SbemuExtFun.StartPlayback = NULL; //not used
MAIN_SbemuExtFun.RaiseIRQ = NULL;
MAIN_SbemuExtFun.DMA_Size = &VDMA_GetCounter;
MAIN_SbemuExtFun.DMA_Write = &VDMA_WriteData;
SBEMU_Init(
MAIN_Options[OPT_IRQ].value,
MAIN_Options[OPT_DMA].value,
MAIN_Options[OPT_HDMA].value,
MAIN_SB_DSPVersion[MAIN_Options[OPT_TYPE].value],
MAIN_Options[OPT_FIX_TC].value,
&MAIN_SbemuExtFun);
VDMA_Virtualize(MAIN_Options[OPT_DMA].value, TRUE);
if(MAIN_Options[OPT_TYPE].value == 6)
VDMA_Virtualize(MAIN_Options[OPT_HDMA].value, TRUE);
for(int i = 0; i < countof(MAIN_SB_IODT); ++i)
MAIN_SB_IODT[i].port += MAIN_Options[OPT_ADDR].value;
QEMM_IODT* SB_Iodt = MAIN_Options[OPT_OPL].value ? MAIN_SB_IODT : MAIN_SB_IODT+4;
int SB_IodtCount = MAIN_Options[OPT_OPL].value ? countof(MAIN_SB_IODT) : countof(MAIN_SB_IODT)-4;
printf("SB %s emulation at address %x, IRQ %x, DMA %x: ",
MAIN_SBTypeString[MAIN_Options[OPT_TYPE].value],
MAIN_Options[OPT_ADDR].value,
MAIN_Options[OPT_IRQ].value,
MAIN_Options[OPT_DMA].value);
print_enabled_newline(true);
BOOL QEMMInstalledVDMA = !enableRM || QEMM_Install_IOPortTrap(MAIN_VDMA_IODT, countof(MAIN_VDMA_IODT), &MAIN_VDMA_IOPT);
#if MAIN_TRAP_PIC_ONDEMAND//will crash with VIRQ installed, do it temporarily. TODO: figure out why
BOOL QEMMInstalledVIRQ = TRUE;
#else
BOOL QEMMInstalledVIRQ = !enableRM || QEMM_Install_IOPortTrap(MAIN_VIRQ_IODT, countof(MAIN_VIRQ_IODT), &MAIN_VIRQ_IOPT);
#endif
BOOL QEMMInstalledSB = !enableRM || QEMM_Install_IOPortTrap(SB_Iodt, SB_IodtCount, &MAIN_SB_IOPT);
BOOL HDPMIInstalledVDMA1 = !enablePM || HDPMIPT_Install_IOPortTrap(0x0, 0xF, MAIN_VDMA_IODT, 16, &MAIN_VDMA_IOPT_PM1);
BOOL HDPMIInstalledVDMA2 = !enablePM || HDPMIPT_Install_IOPortTrap(0x81, 0x83, MAIN_VDMA_IODT+16, 3, &MAIN_VDMA_IOPT_PM2);
BOOL HDPMIInstalledVDMA3 = !enablePM || HDPMIPT_Install_IOPortTrap(0x87, 0x87, MAIN_VDMA_IODT+19, 1, &MAIN_VDMA_IOPT_PM3);
BOOL HDPMIInstalledVHDMA1 = !enablePM || HDPMIPT_Install_IOPortTrap(0xC0, 0xDE, MAIN_VDMA_IODT+20, 16, &MAIN_VHDMA_IOPT_PM1);
BOOL HDPMIInstalledVHDMA2 = !enablePM || HDPMIPT_Install_IOPortTrap(0x89, 0x8B, MAIN_VDMA_IODT+36, 3, &MAIN_VHDMA_IOPT_PM2);
BOOL HDPMIInstalledVHDMA3 = !enablePM || HDPMIPT_Install_IOPortTrap(0x8F, 0x8F, MAIN_VDMA_IODT+39, 1, &MAIN_VHDMA_IOPT_PM3);
#if MAIN_TRAP_PIC_ONDEMAND
BOOL HDPMIInstalledVIRQ1 = TRUE;
BOOL HDPMIInstalledVIRQ2 = TRUE;
#else
BOOL HDPMIInstalledVIRQ1 = !enablePM || HDPMIPT_Install_IOPortTrap(0x20, 0x21, MAIN_VIRQ_IODT, 2, &MAIN_VIRQ_IOPT_PM1);
BOOL HDPMIInstalledVIRQ2 = !enablePM || HDPMIPT_Install_IOPortTrap(0xA0, 0xA1, MAIN_VIRQ_IODT+2, 2, &MAIN_VIRQ_IOPT_PM2);
#endif
BOOL HDPMIInstalledSB = !enablePM || HDPMIPT_Install_IOPortTrap(MAIN_Options[OPT_ADDR].value, MAIN_Options[OPT_ADDR].value+0x0F, SB_Iodt, SB_IodtCount, &MAIN_SB_IOPT_PM);
BOOL TSR_ISR = FALSE;
for(int i = MAIN_TSR_INTSTART_ID; i <= 0xFF; ++i)
{
DPMI_REG r = {0};
r.h.ah = i;
//DBG_DumpREG(&r);
DPMI_CallRealModeINT(MAIN_TSR_INT, &r);
if(r.h.al != 0) //find free multiplex number
continue;
MAIN_TSR_INT_FNO = i;
TSR_ISR = DPMI_InstallRealModeISR(MAIN_TSR_INT, MAIN_TSR_Interrupt, &MAIN_TSRREG, &MAIN_TSRIntHandle) == 0;
if(!TSR_ISR)
break;
MAIN_ISR_DOSID = DPMI_HighMalloc((sizeof(MAIN_ISR_DOSID_String)+15)>>4, TRUE);
//printf("DOSID:%x\n", DPMI_SEGOFF2L(MAIN_ISR_DOSID,0));
DPMI_CopyLinear(DPMI_SEGOFF2L(MAIN_ISR_DOSID,0), DPMI_PTR2L((char*)MAIN_ISR_DOSID_String), sizeof(MAIN_ISR_DOSID_String));
break;
}
_LOG("sound card IRQ: %d\n", aui.card_irq);
PIC_MaskIRQ(aui.card_irq);
AU_ini_interrupts(&aui);
int samplerate = (MAIN_Options[OPT_RATE].value == 0x22050) ? 22050 : 44100;
mpxplay_audio_decoder_info_s adi = {NULL, 0, 1, samplerate, SBEMU_CHANNELS, SBEMU_CHANNELS, NULL, SBEMU_BITS, SBEMU_BITS/8, 0};
AU_setrate(&aui, &adi);
AU_setmixer_init(&aui);
AU_setmixer_outs(&aui, MIXER_SETMODE_ABSOLUTE, 100);
//set volume
AU_setmixer_one(&aui, AU_MIXCHAN_MASTER, MIXER_SETMODE_ABSOLUTE, MAIN_Options[OPT_VOL].value*100/9);
if(MAIN_Options[OPT_OPL].value)
OPL3EMU_Init(aui.freq_card); //aui.freq_card available after AU_setrate
BOOL PM_ISR = DPMI_InstallISR(PIC_IRQ2VEC(aui.card_irq), MAIN_InterruptPM, &MAIN_IntHandlePM) == 0;
//set default ACK, to skip recursion of DOS/4GW
{
DPMI_ISR_HANDLE h;
for(int i = 0; i < 15; ++i)
{
DPMI_GetISR(PIC_IRQ2VEC(i), &h);
HDPMIPT_InstallIRQACKHandler(i, h.old_cs, h.old_offset);
}
}
HDPMIPT_InstallIRQACKHandler(aui.card_irq, MAIN_IntHandlePM.wrapper_cs, MAIN_IntHandlePM.wrapper_offset);
#if MAIN_INSTALL_RM_ISR
BOOL RM_ISR = DPMI_InstallRealModeISR(PIC_IRQ2VEC(aui.card_irq), MAIN_InterruptRM, &MAIN_IntREG, &MAIN_IntHandleRM) == 0;
#else
BOOL RM_ISR = TRUE;
#endif
PIC_UnmaskIRQ(aui.card_irq);
AU_prestart(&aui);
AU_start(&aui);
BOOL TSR = TRUE;
if(!PM_ISR || !RM_ISR || !TSR_ISR
|| !QEMMInstalledVDMA || !QEMMInstalledVIRQ || !QEMMInstalledSB
|| !HDPMIInstalledVDMA1 || !HDPMIInstalledVDMA2 || !HDPMIInstalledVDMA3 || !HDPMIInstalledVHDMA1 || !HDPMIInstalledVHDMA2 || !HDPMIInstalledVHDMA3
|| !HDPMIInstalledVIRQ1 || !HDPMIInstalledVIRQ2 || !HDPMIInstalledSB
|| !(TSR=DPMI_TSR()))
{
if(MAIN_Options[OPT_OPL].value)
{
if(enableRM) QEMM_Uninstall_IOPortTrap(&OPL3IOPT);
if(enablePM) HDPMIPT_Uninstall_IOPortTrap(&OPL3IOPT_PM);
}
if(!QEMMInstalledVDMA || !QEMMInstalledVIRQ || !QEMMInstalledSB)
printf("Error: Failed installing IO port trap for QEMM.\n");
if(enableRM && QEMMInstalledVDMA) QEMM_Uninstall_IOPortTrap(&MAIN_VDMA_IOPT);
#if !MAIN_TRAP_PIC_ONDEMAND
if(enableRM && QEMMInstalledVIRQ) QEMM_Uninstall_IOPortTrap(&MAIN_VIRQ_IOPT);
#endif
if(enableRM && QEMMInstalledSB) QEMM_Uninstall_IOPortTrap(&MAIN_SB_IOPT);
if(!HDPMIInstalledVDMA1 || !HDPMIInstalledVDMA2 || !HDPMIInstalledVDMA3 || !HDPMIInstalledVHDMA1 || !HDPMIInstalledVHDMA2 || !HDPMIInstalledVHDMA3 || !HDPMIInstalledVIRQ1 || !HDPMIInstalledVIRQ2 || !HDPMIInstalledSB)
printf("Error: Failed installing IO port trap for HDPMI.\n");
if(enablePM && HDPMIInstalledVDMA1) HDPMIPT_Uninstall_IOPortTrap(&MAIN_VDMA_IOPT_PM1);
if(enablePM && HDPMIInstalledVDMA2) HDPMIPT_Uninstall_IOPortTrap(&MAIN_VDMA_IOPT_PM2);
if(enablePM && HDPMIInstalledVDMA3) HDPMIPT_Uninstall_IOPortTrap(&MAIN_VDMA_IOPT_PM3);
if(enablePM && HDPMIInstalledVHDMA1) HDPMIPT_Uninstall_IOPortTrap(&MAIN_VHDMA_IOPT_PM1);
if(enablePM && HDPMIInstalledVHDMA2) HDPMIPT_Uninstall_IOPortTrap(&MAIN_VHDMA_IOPT_PM2);
if(enablePM && HDPMIInstalledVHDMA3) HDPMIPT_Uninstall_IOPortTrap(&MAIN_VHDMA_IOPT_PM3);
#if !MAIN_TRAP_PIC_ONDEMAND
if(enablePM && HDPMIInstalledVIRQ1) HDPMIPT_Uninstall_IOPortTrap(&MAIN_VIRQ_IOPT_PM1);
if(enablePM && HDPMIInstalledVIRQ2) HDPMIPT_Uninstall_IOPortTrap(&MAIN_VIRQ_IOPT_PM2);
#endif
if(enablePM && HDPMIInstalledSB) HDPMIPT_Uninstall_IOPortTrap(&MAIN_SB_IOPT_PM);
if(!PM_ISR)
printf("Error: Failed installing sound card ISR.\n");
if(!RM_ISR)
printf("Error: Failed installing sound card ISR.\n");
if(PM_ISR) DPMI_UninstallISR(&MAIN_IntHandlePM);
#if MAIN_INSTALL_RM_ISR
if(RM_ISR) DPMI_UninstallISR(&MAIN_IntHandleRM);
#endif
if(!TSR_ISR)
printf("Error: Failed installing TSR interrupt.\n");
if(TSR_ISR) DPMI_UninstallISR(&MAIN_TSRIntHandle);
if(!TSR)
printf("Error: Failed installing TSR.\n");
}
return 1;
}
static void MAIN_InterruptPM()
{
HDPMIPT_GetInterrupContext(&MAIN_IntContext);
if(!MAIN_InINT && aui.card_handler->irq_routine && aui.card_handler->irq_routine(&aui)) //check if the irq belong the sound card
{
MAIN_Interrupt();
PIC_SendEOIWithIRQ(aui.card_irq);
}
else
{
BOOL InInt = MAIN_InINT;
MAIN_InINT = TRUE;
if(MAIN_IntContext.EFLAGS&CPU_VMFLAG)
DPMI_CallOldISR(&MAIN_IntHandlePM);
else
DPMI_CallOldISRWithContext(&MAIN_IntHandlePM, &MAIN_IntContext.regs);
PIC_UnmaskIRQ(aui.card_irq);
MAIN_InINT = InInt;
}
}
static void MAIN_InterruptRM()
{
if(!MAIN_InINT && aui.card_handler->irq_routine && aui.card_handler->irq_routine(&aui)) //check if the irq belong the sound card
{
MAIN_IntContext.regs = MAIN_IntREG;
MAIN_IntContext.EFLAGS = MAIN_IntREG.w.flags | CPU_VMFLAG;
MAIN_Interrupt();
PIC_SendEOIWithIRQ(aui.card_irq);
}
else
{
BOOL InInt = MAIN_InINT;
MAIN_InINT = TRUE;
DPMI_CallRealModeOldISR(&MAIN_IntHandleRM, &MAIN_IntREG);
PIC_UnmaskIRQ(aui.card_irq);
MAIN_InINT = InInt;
}
}
static void MAIN_Interrupt()
{
#if 0
aui.card_outbytes = aui.card_dmasize;
int space = AU_cardbuf_space(&aui)+2048;
//_LOG("int space: %d\n", space);
int samples = space / sizeof(int16_t) / 2 * 2;
//int samples = 22050/18*2;
_LOG("samples: %d %d\n", 22050/18*2, space/4*2);
static int cur = 0;
aui.samplenum = min(samples, TEST_SampleLen-cur);
aui.pcm_sample = TEST_Sample + cur;
//_LOG("cur: %d %d\n",cur,aui.samplenum);
cur += aui.samplenum;
cur -= AU_writedata(&aui);
#else
if(!(aui.card_infobits&AUINFOS_CARDINFOBIT_PLAYING))
return;
if(SBEMU_IRQTriggered())
{
MAIN_InvokeIRQ(SBEMU_GetIRQ());
SBEMU_SetIRQTriggered(FALSE);
}
int32_t vol;
int32_t voicevol;
int32_t midivol;
int32_t cdvol; // 0-100 (percentage)
static int32_t last_cdvol = -1;
if(MAIN_Options[OPT_TYPE].value == 1 || MAIN_Options[OPT_TYPE].value == 3) //SB2.0 and before
{
vol = (SBEMU_GetMixerReg(SBEMU_MIXERREG_MASTERVOL) >> 1)*256/7;
voicevol = (SBEMU_GetMixerReg(SBEMU_MIXERREG_VOICEVOL) >> 1)*256/3;
midivol = (SBEMU_GetMixerReg(SBEMU_MIXERREG_MIDIVOL) >> 1)*256/7;
cdvol = (SBEMU_GetMixerReg(SBEMU_MIXERREG_CDVOL) >> 1)*100/7;
}
else if(MAIN_Options[OPT_TYPE].value == 6) //SB16
{
// TODO: This only uses the left channel volume as volume for both left and right
vol = (SBEMU_GetMixerReg(SBEMU_MIXERREG_MASTERSTEREO)>>4)*256/15; //4:4
voicevol = (SBEMU_GetMixerReg(SBEMU_MIXERREG_VOICESTEREO)>>4)*256/15; //4:4
midivol = (SBEMU_GetMixerReg(SBEMU_MIXERREG_MIDISTEREO)>>4)*256/15; //4:4
cdvol = (SBEMU_GetMixerReg(SBEMU_MIXERREG_CDSTEREO)>>4)*100/15; //4:4
//_LOG("vol: %d, voicevol: %d, midivol: %d\n", vol, voicevol, midivol);
}
else //SBPro
{
// TODO: This only uses the left channel volume as volume for both left and right
vol = (SBEMU_GetMixerReg(SBEMU_MIXERREG_MASTERSTEREO)>>5)*256/7; //3:1:3:1 stereo usually the same for both channel for games?;
voicevol = (SBEMU_GetMixerReg(SBEMU_MIXERREG_VOICESTEREO)>>5)*256/7; //3:1:3:1
midivol = (SBEMU_GetMixerReg(SBEMU_MIXERREG_MIDISTEREO)>>5)*256/7;
cdvol = (SBEMU_GetMixerReg(SBEMU_MIXERREG_CDSTEREO)>>5)*100/7;
//_LOG("vol: %d, voicevol: %d, midivol: %d\n", vol, voicevol, midivol);
}
if (cdvol != last_cdvol) {
// Apply CD-Audio volume to device mixer (CDDA mixing is handled purely on soundcard,
// so plug in your 4-pin audio cable from the CD-ROM drive to the soundcard CD-IN)
AU_setmixer_one(&aui, AU_MIXCHAN_CDIN, MIXER_SETMODE_ABSOLUTE, cdvol);
last_cdvol = cdvol;
}
aui.card_outbytes = aui.card_dmasize;
int samples = AU_cardbuf_space(&aui) / sizeof(int16_t) / 2; //16 bit, 2 channels
//_LOG("samples:%d\n",samples);
if(samples == 0)
return;
BOOL digital = SBEMU_HasStarted();
int dma = (SBEMU_GetBits() <= 8 || MAIN_Options[OPT_TYPE].value < 6) ? SBEMU_GetDMA() : SBEMU_GetHDMA();
int32_t DMA_Count = VDMA_GetCounter(dma); //count in bytes
if(digital)//&& DMA_Count != 0x10000) //-1(0xFFFF)+1=0
{
uint32_t DMA_Addr = VDMA_GetAddress(dma);
int32_t DMA_Index = VDMA_GetIndex(dma);
uint32_t SB_Bytes = SBEMU_GetSampleBytes();
uint32_t SB_Pos = SBEMU_GetPos();
uint32_t SB_Rate = SBEMU_GetSampleRate();
int samplesize = max(1, SBEMU_GetBits()/8); //sample size in bytes 1 for 8bit. 2 for 16bit
int channels = SBEMU_GetChannels();
_LOG("sample rate: %d %d\n", SB_Rate, aui.freq_card);
_LOG("channels: %d, size:%d\n", channels, samplesize);
//_LOG("DMA index: %x\n", DMA_Index);
//_LOG("digital start\n");
int pos = 0;
do {
if(MAIN_DMA_MappedAddr != 0
&& !(DMA_Addr >= MAIN_DMA_Addr && DMA_Addr+DMA_Index+DMA_Count <= MAIN_DMA_Addr+MAIN_DMA_Size))
{
if(MAIN_DMA_MappedAddr > 1024*1024)
DPMI_UnmappMemory(MAIN_DMA_MappedAddr);
MAIN_DMA_MappedAddr = 0;
}
if(MAIN_DMA_MappedAddr == 0)
{
MAIN_DMA_Addr = DMA_Addr&~0xFFF;
MAIN_DMA_Size = align(max(DMA_Addr-MAIN_DMA_Addr+DMA_Index+DMA_Count, 64*1024*2), 4096);
MAIN_DMA_MappedAddr = (DMA_Addr+DMA_Index+DMA_Count <= 1024*1024) ? (DMA_Addr&~0xFFF) : DPMI_MapMemory(MAIN_DMA_Addr, MAIN_DMA_Size);
}
//_LOG("DMA_ADDR:%x, %x, %x\n",DMA_Addr, MAIN_DMA_Addr, MAIN_DMA_MappedAddr);
int count = samples-pos;
BOOL resample = TRUE; //don't resample if sample rates are close
if(SB_Rate < aui.freq_card-50)
count = max(1, count*SB_Rate/aui.freq_card);
else if(SB_Rate > aui.freq_card+50)
count = count*SB_Rate/aui.freq_card;
else
resample = FALSE;
count = min(count, max(1,(DMA_Count)/samplesize/channels)); //max for stereo initial 1 byte
count = min(count, max(1,(SB_Bytes-SB_Pos)/samplesize/channels)); //max for stereo initial 1 byte. 1/2channel = 0, make it 1
if(SBEMU_GetBits()<8) //ADPCM 8bit
count = max(1, count / (9 / SBEMU_GetBits()));
_LOG("samples:%d %d %d, %d %d, %d %d\n", samples, pos+count, count, DMA_Count, DMA_Index, SB_Bytes, SB_Pos);
int bytes = count * samplesize * channels;
if(MAIN_DMA_MappedAddr == 0) //map failed?
memset(MAIN_PCM+pos*2, 0, bytes);
else
DPMI_CopyLinear(DPMI_PTR2L(MAIN_PCM+pos*2), MAIN_DMA_MappedAddr+(DMA_Addr-MAIN_DMA_Addr)+DMA_Index, bytes);
if(SBEMU_GetBits()<8) //ADPCM 8bit
count = SBEMU_DecodeADPCM((uint8_t*)(MAIN_PCM+pos*2), bytes);
if(samplesize != 2)
cv_bits_n_to_m(MAIN_PCM+pos*2, count*channels, samplesize, 2);
if(resample/*SB_Rate != aui.freq_card*/)
count = mixer_speed_lq(MAIN_PCM+pos*2, count*channels, channels, SB_Rate, aui.freq_card)/channels;
if(channels == 1) //should be the last step
cv_channels_1_to_n(MAIN_PCM+pos*2, count, 2, 2);
pos += count;
//_LOG("samples:%d %d %d\n", count, pos, samples);
DMA_Index = VDMA_SetIndexCounter(dma, DMA_Index+bytes, DMA_Count-bytes);
DMA_Count = VDMA_GetCounter(dma);
SB_Pos = SBEMU_SetPos(SB_Pos+bytes);
//_LOG("SB bytes: %d %d\n", SB_Pos, SB_Bytes);
if(SB_Pos >= SB_Bytes)
{
//_LOG("INT:%d,%d,%d,%d\n",MAIN_SBBytes,SBEMU_GetSampleBytes(),MAIN_DMAIndex,DMA_Count);
//_LOG("SBEMU: Auto: %d\n",SBEMU_GetAuto());
if(!SBEMU_GetAuto())
SBEMU_Stop();
SB_Pos = SBEMU_SetPos(0);
MAIN_InvokeIRQ(SBEMU_GetIRQ());
if(SB_Bytes <= 32) //detection routine?
{
int c = SBEMU_GetDetectionCounter();
if(++c >= 256) //Miles Sound will "freeze" or crash when we continually send virtual interrupt to it, it seems it processes slow and virtual interrupt keeps happening until crash.
SBEMU_Stop(); //fix problem when Miles Sound using SB driver on SBPro emulation
SBEMU_SetDetectionCounter(c);
break; //fix crash in virtualbox.
}
SB_Bytes = SBEMU_GetSampleBytes();
SB_Pos = SBEMU_GetPos();
SB_Rate = SBEMU_GetSampleRate();
//incase IRQ handler re-programs DMA
DMA_Index = VDMA_GetIndex(dma);
DMA_Count = VDMA_GetCounter(dma);
DMA_Addr = VDMA_GetAddress(dma);
//_LOG("DMACount: %d, DMAIndex:%d, DMA_Addr:%x\n",DMA_Count, DMA_Index, DMA_Addr);
}
} while(VDMA_GetAuto(dma) && (pos < samples) && SBEMU_HasStarted());
//_LOG("digital end %d %d\n", samples, pos);
//for(int i = pos; i < samples; ++i)
// MAIN_PCM[i*2+1] = MAIN_PCM[i*2] = 0;
samples = min(samples, pos);
}
else if(SBEMU_GetDirectCount()>=3)
{
samples = SBEMU_GetDirectCount();
_LOG("direct out:%d %d\n",samples,aui.card_samples_per_int);
memcpy(MAIN_PCM, SBEMU_GetDirectPCM8(), samples);
SBEMU_ResetDirect();
#if 0 //fix noise for some games - SBEMU-X NOTE: unlikely to be needed
int zeros = TRUE;
for(int i = 0; i < samples && zeros; ++i)
{
if(((uint8_t*)MAIN_PCM)[i] != 0)
zeros = FALSE;
}
if(zeros)
{
for(int i = 0; i < samples; ++i)
((uint8_t*)MAIN_PCM)[i] = 128;
}
#endif
//for(int i = 0; i < samples; ++i) _LOG("%d ",((uint8_t*)MAIN_PCM)[i]); _LOG("\n");
cv_bits_n_to_m(MAIN_PCM, samples, 1, 2);
//for(int i = 0; i < samples; ++i) _LOG("%d ",MAIN_PCM[i]); _LOG("\n");
// the actual sample rate is derived from current count of samples in direct output buffer
samples = mixer_speed_lq(MAIN_PCM, samples, 1, (samples * aui.freq_card) / aui.card_samples_per_int, aui.freq_card);
//for(int i = 0; i < samples; ++i) _LOG("%d ",MAIN_PCM[i]); _LOG("\n");
cv_channels_1_to_n(MAIN_PCM, samples, 2, 2);
digital = TRUE;
}
else if(!MAIN_Options[OPT_OPL].value)
memset(MAIN_PCM, 0, samples*sizeof(int16_t)*2); //output muted samples.
if(MAIN_Options[OPT_OPL].value)
{
int16_t* pcm = digital ? MAIN_OPLPCM : MAIN_PCM;
OPL3EMU_GenSamples(pcm, samples); //will generate samples*2 if stereo
//always use 2 channels
int channels = OPL3EMU_GetMode() ? 2 : 1;
if(channels == 1)
cv_channels_1_to_n(pcm, samples, 2, SBEMU_BITS/8);
if(digital)
{
for(int i = 0; i < samples*2; ++i)
{
#if 1
// https://stackoverflow.com/questions/12089662/mixing-16-bit-linear-pcm-streams-and-avoiding-clipping-overflow
int a = (int)(MAIN_PCM[i] * voicevol/256) + 32768;
int b = (int)(MAIN_OPLPCM[i] * midivol/256 * (MAIN_DOUBLE_OPL_VOLUME+1)) + 32768;
int mixed = (a < 32768 || b < 32768) ? (a*b/32768) : ((a+b)*2 - a*b/32768 - 65536);
if(mixed == 65536) mixed = 65535;
MAIN_PCM[i] = (mixed - 32768) * vol/256;
#else //simple average: sounds the same as DOSBox
int a = (int)(MAIN_PCM[i] * voicevol/256);
int b = (int)(MAIN_OPLPCM[i] * midivol/256);
MAIN_PCM[i] = (a+b)/2 * vol/256;
#endif
}