diff options
Diffstat (limited to 'trunk/src/emu/sound/vrender0.c')
-rw-r--r-- | trunk/src/emu/sound/vrender0.c | 270 |
1 files changed, 270 insertions, 0 deletions
diff --git a/trunk/src/emu/sound/vrender0.c b/trunk/src/emu/sound/vrender0.c new file mode 100644 index 00000000000..1584507703c --- /dev/null +++ b/trunk/src/emu/sound/vrender0.c @@ -0,0 +1,270 @@ +#include "emu.h" +#include "vrender0.h" + +/*********************************** + VRENDER ZERO + AUDIO EMULATION +************************************/ +/************ +MISSING: +envelopes +reverb +interrupts +*************/ + +typedef struct _vr0_state vr0_state; +struct _vr0_state +{ + UINT32 *TexBase; + UINT32 *FBBase; + UINT32 SOUNDREGS[0x10000/4]; + vr0_interface Intf; + sound_stream * stream; +}; + +INLINE vr0_state *get_safe_token(device_t *device) +{ + assert(device != NULL); + assert(device->type() == VRENDER0); + return (vr0_state *)downcast<legacy_device_base *>(device)->token(); +} + +static void VR0_RenderAudio(vr0_state *VR0, int nsamples,stream_sample_t *l,stream_sample_t *r); + +static STREAM_UPDATE( VR0_Update ) +{ + vr0_state *VR0 = (vr0_state *)param; + VR0_RenderAudio(VR0, samples,outputs[0],outputs[1]); +} + +//Correct table thanks to Evoga +//they left a ulaw<->linear conversion tool inside the roms +static const unsigned short ULawTo16[]= +{ + 0x8000,0x8400,0x8800,0x8C00,0x9000,0x9400,0x9800,0x9C00, + 0xA000,0xA400,0xA800,0xAC00,0xB000,0xB400,0xB800,0xBC00, + 0x4000,0x4400,0x4800,0x4C00,0x5000,0x5400,0x5800,0x5C00, + 0x6000,0x6400,0x6800,0x6C00,0x7000,0x7400,0x7800,0x7C00, + 0xC000,0xC200,0xC400,0xC600,0xC800,0xCA00,0xCC00,0xCE00, + 0xD000,0xD200,0xD400,0xD600,0xD800,0xDA00,0xDC00,0xDE00, + 0x2000,0x2200,0x2400,0x2600,0x2800,0x2A00,0x2C00,0x2E00, + 0x3000,0x3200,0x3400,0x3600,0x3800,0x3A00,0x3C00,0x3E00, + 0xE000,0xE100,0xE200,0xE300,0xE400,0xE500,0xE600,0xE700, + 0xE800,0xE900,0xEA00,0xEB00,0xEC00,0xED00,0xEE00,0xEF00, + 0x1000,0x1100,0x1200,0x1300,0x1400,0x1500,0x1600,0x1700, + 0x1800,0x1900,0x1A00,0x1B00,0x1C00,0x1D00,0x1E00,0x1F00, + 0xF000,0xF080,0xF100,0xF180,0xF200,0xF280,0xF300,0xF380, + 0xF400,0xF480,0xF500,0xF580,0xF600,0xF680,0xF700,0xF780, + 0x0800,0x0880,0x0900,0x0980,0x0A00,0x0A80,0x0B00,0x0B80, + 0x0C00,0x0C80,0x0D00,0x0D80,0x0E00,0x0E80,0x0F00,0x0F80, + 0xF800,0xF840,0xF880,0xF8C0,0xF900,0xF940,0xF980,0xF9C0, + 0xFA00,0xFA40,0xFA80,0xFAC0,0xFB00,0xFB40,0xFB80,0xFBC0, + 0x0400,0x0440,0x0480,0x04C0,0x0500,0x0540,0x0580,0x05C0, + 0x0600,0x0640,0x0680,0x06C0,0x0700,0x0740,0x0780,0x07C0, + 0xFC00,0xFC20,0xFC40,0xFC60,0xFC80,0xFCA0,0xFCC0,0xFCE0, + 0xFD00,0xFD20,0xFD40,0xFD60,0xFD80,0xFDA0,0xFDC0,0xFDE0, + 0x0200,0x0220,0x0240,0x0260,0x0280,0x02A0,0x02C0,0x02E0, + 0x0300,0x0320,0x0340,0x0360,0x0380,0x03A0,0x03C0,0x03E0, + 0xFE00,0xFE10,0xFE20,0xFE30,0xFE40,0xFE50,0xFE60,0xFE70, + 0xFE80,0xFE90,0xFEA0,0xFEB0,0xFEC0,0xFED0,0xFEE0,0xFEF0, + 0x0100,0x0110,0x0120,0x0130,0x0140,0x0150,0x0160,0x0170, + 0x0180,0x0190,0x01A0,0x01B0,0x01C0,0x01D0,0x01E0,0x01F0, + 0x0000,0x0008,0x0010,0x0018,0x0020,0x0028,0x0030,0x0038, + 0x0040,0x0048,0x0050,0x0058,0x0060,0x0068,0x0070,0x0078, + 0xFF80,0xFF88,0xFF90,0xFF98,0xFFA0,0xFFA8,0xFFB0,0xFFB8, + 0xFFC0,0xFFC8,0xFFD0,0xFFD8,0xFFE0,0xFFE8,0xFFF0,0xFFF8, +}; + + +#define STATUS VR0->SOUNDREGS[0x404/4] +#define CURSADDR(chan) (VR0->SOUNDREGS[(0x20/4)*chan+0x00]) +#define DSADDR(chan) ((VR0->SOUNDREGS[(0x20/4)*chan+0x08/4]>>0)&0xffff) +#define LOOPBEGIN(chan) (VR0->SOUNDREGS[(0x20/4)*chan+0x0c/4]&0x3fffff) +#define LOOPEND(chan) (VR0->SOUNDREGS[(0x20/4)*chan+0x10/4]&0x3fffff) +#define ENVVOL(chan) (VR0->SOUNDREGS[(0x20/4)*chan+0x04/4]&0xffffff) + +/* +#define GETSOUNDREG16(Chan,Offs) space->read_word(VR0->Intf.reg_base+0x20*Chan+Offs) +#define GETSOUNDREG32(Chan,Offs) space->read_dword(VR0->Intf.reg_base+0x20*Chan+Offs) + +#define CURSADDR(chan) GETSOUNDREG32(chan,0x00) +#define DSADDR(chan) GETSOUNDREG16(chan,0x08) +#define LOOPBEGIN(chan) (GETSOUNDREG32(chan,0x0c)&0x3fffff) +#define LOOPEND(chan) (GETSOUNDREG32(chan,0x10)&0x3fffff) +#define ENVVOL(chan) (GETSOUNDREG32(chan,0x04)&0xffffff) +*/ +void vr0_snd_set_areas(device_t *device,UINT32 *texture,UINT32 *frame) +{ + vr0_state *VR0 = get_safe_token(device); + VR0->TexBase=texture; + VR0->FBBase=frame; +} + +static DEVICE_START( vrender0 ) +{ + const vr0_interface *intf; + vr0_state *VR0 = get_safe_token(device); + + intf = (const vr0_interface *)device->static_config(); + + memcpy(&(VR0->Intf),intf,sizeof(vr0_interface)); + memset(VR0->SOUNDREGS,0,sizeof(VR0->SOUNDREGS)); + + VR0->stream = device->machine().sound().stream_alloc(*device, 0, 2, 44100, VR0, VR0_Update); + + device->save_item(NAME(VR0->SOUNDREGS)); +} + +WRITE32_DEVICE_HANDLER(vr0_snd_write) +{ + vr0_state *VR0 = get_safe_token(device); + if(offset==0x404/4) + { + data&=0xffff; + if(data&0x8000) + { + UINT32 c=data&0x1f; + STATUS|=1<<c; + CURSADDR(c)=0; + } + else + { + STATUS&=~(1<<(data&0x1f)); + } + return; + } + else + { + COMBINE_DATA(&VR0->SOUNDREGS[offset]); + } +} + + +READ32_DEVICE_HANDLER(vr0_snd_read) +{ + vr0_state *VR0 = get_safe_token(device); + return VR0->SOUNDREGS[offset]; +} + +static void VR0_RenderAudio(vr0_state *VR0, int nsamples,stream_sample_t *l,stream_sample_t *r) +{ + INT16 *SAMPLES; + UINT32 st=STATUS; + signed int lsample=0,rsample=0; + UINT32 CLK=(VR0->SOUNDREGS[0x600/4]>>0)&0xff; + UINT32 NCH=(VR0->SOUNDREGS[0x600/4]>>8)&0xff; + UINT32 CT1=(VR0->SOUNDREGS[0x600/4]>>16)&0xff; + UINT32 CT2=(VR0->SOUNDREGS[0x600/4]>>24)&0xff; + int div; + int s; + + + if(CT1&0x20) + SAMPLES=(INT16 *)VR0->TexBase; + else + SAMPLES=(INT16 *)VR0->FBBase; + + if(CLK) + div=((30<<16)|0x8000)/(CLK+1); + else + div=1<<16; + + for(s=0;s<nsamples;++s) + { + int i; + lsample=rsample=0; + for(i=0;i<=NCH;++i) + { + signed int sample; + UINT32 cur=CURSADDR(i); + UINT32 a=LOOPBEGIN(i)+(cur>>10); + UINT8 Mode=VR0->SOUNDREGS[(0x20/4)*i+0x8/4]>>24; + signed int LVOL=VR0->SOUNDREGS[(0x20/4)*i+0xc/4]>>24; + signed int RVOL=VR0->SOUNDREGS[(0x20/4)*i+0x10/4]>>24; + + INT32 DSADD=(DSADDR(i)*div)>>16; + + if(!(st&(1<<i)) || !(CT2&0x80)) + continue; + + if(Mode&0x10) //u-law + { + UINT16 s=SAMPLES[a]; + if((cur&0x200)) + s>>=8; + sample=(signed short)ULawTo16[s&0xff]; + } + else + { + if(Mode&0x20) //8bit + { + UINT16 s=SAMPLES[a]; + if((cur&0x200)) + s>>=8; + sample=(signed short) (((signed char) (s&0xff))<<8); + } + else //16bit + { + sample=SAMPLES[a]; + } + } + + CURSADDR(i)+=DSADD; + if(a>=LOOPEND(i)) + { + if(Mode&1) //Loop + CURSADDR(i)=0;//LOOPBEGIN(i)<<10; + else + { + STATUS&=~(1<<(i&0x1f)); + break; + } + } +// UINT32 v=(ENVVOL(i))>>8; +// sample=(sample*v)>>16; + lsample+=(sample*LVOL)>>8; + rsample+=(sample*RVOL)>>8; + } + if(lsample>32767) + lsample=32767; + if(lsample<-32768) + lsample=-32768; + l[s]=lsample; + if(rsample>32767) + rsample=32767; + if(rsample<-32768) + rsample=-32768; + r[s]=rsample; + } +} + + + + +/************************************************************************** + * Generic get_info + **************************************************************************/ + +DEVICE_GET_INFO( vrender0 ) +{ + switch (state) + { + /* --- the following bits of info are returned as 64-bit signed integers --- */ + case DEVINFO_INT_TOKEN_BYTES: info->i = sizeof(vr0_state); break; + + /* --- the following bits of info are returned as pointers to data or functions --- */ + case DEVINFO_FCT_START: info->start = DEVICE_START_NAME( vrender0 ); break; + case DEVINFO_FCT_STOP: /* Nothing */ break; + case DEVINFO_FCT_RESET: /* Nothing */ break; + + /* --- the following bits of info are returned as NULL-terminated strings --- */ + case DEVINFO_STR_NAME: strcpy(info->s, "VRender0"); break; + case DEVINFO_STR_FAMILY: strcpy(info->s, "???"); break; + case DEVINFO_STR_VERSION: strcpy(info->s, "1.0"); break; + case DEVINFO_STR_SOURCE_FILE: strcpy(info->s, __FILE__); break; + case DEVINFO_STR_CREDITS: strcpy(info->s, "Copyright Nicola Salmoria and the MAME Team"); break; + } +} + + +DEFINE_LEGACY_SOUND_DEVICE(VRENDER0, vrender0); |