X-Git-Url: https://notaz.gp2x.de/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=Pico%2Fsound%2Fsound.c;fp=Pico%2Fsound%2Fsound.c;h=0000000000000000000000000000000000000000;hb=1cfc5cc4ce06642b9bc45ca3b9d32793718e9455;hp=39ae2910e6fe39fdaa05d0d8a82bb88e526c0795;hpb=d158df697da66bcda57307e35fc77929cfa5053c;p=picodrive.git diff --git a/Pico/sound/sound.c b/Pico/sound/sound.c deleted file mode 100644 index 39ae291..0000000 --- a/Pico/sound/sound.c +++ /dev/null @@ -1,631 +0,0 @@ -// This is part of Pico Library - -// (c) Copyright 2004 Dave, All rights reserved. -// (c) Copyright 2006,2007 notaz, All rights reserved. -// Free for non-commercial use. - -// For commercial use, separate licencing terms must be obtained. - - -#include -#include "ym2612.h" -#include "sn76496.h" -#include "../pico_int.h" -#include "../cd/pcm.h" -#include "mix.h" - -void (*PsndMix_32_to_16l)(short *dest, int *src, int count) = mix_32_to_16l_stereo; - -// master int buffer to mix to -static int PsndBuffer[2*44100/50]; - -// dac -static unsigned short dac_info[312+4]; // pppppppp ppppllll, p - pos in buff, l - length to write for this sample - -// cdda output buffer -short cdda_out_buffer[2*1152]; - -// for Pico -int PsndRate=0; -int PsndLen=0; // number of mono samples, multiply by 2 for stereo -int PsndLen_exc_add=0; // this is for non-integer sample counts per line, eg. 22050/60 -int PsndLen_exc_cnt=0; -int PsndDacLine=0; -short *PsndOut=NULL; // PCM data buffer - -// timers -int timer_a_next_oflow, timer_a_step; // in z80 cycles -int timer_b_next_oflow, timer_b_step; - -// sn76496 -extern int *sn76496_regs; - - -static void dac_recalculate(void) -{ - int i, dac_cnt, pos, len, lines = Pico.m.pal ? 312 : 262, mid = Pico.m.pal ? 68 : 93; - - if (PsndLen <= lines) - { - // shrinking algo - dac_cnt = -PsndLen; - len=1; pos=0; - dac_info[225] = 1; - - for(i=226; i != 225; i++) - { - if (i >= lines) i = 0; - len = 0; - if(dac_cnt < 0) { - len=1; - pos++; - dac_cnt += lines; - } - dac_cnt -= PsndLen; - dac_info[i] = (pos<<4)|len; - } - } - else - { - // stretching - dac_cnt = PsndLen; - pos=0; - for(i = 225; i != 224; i++) - { - if (i >= lines) i = 0; - len=0; - while(dac_cnt >= 0) { - dac_cnt -= lines; - len++; - } - if (i == mid) // midpoint - while(pos+len < PsndLen/2) { - dac_cnt -= lines; - len++; - } - dac_cnt += PsndLen; - dac_info[i] = (pos<<4)|len; - pos+=len; - } - // last sample - for(len = 0, i = pos; i < PsndLen; i++) len++; - if (PsndLen_exc_add) len++; - dac_info[224] = (pos<<4)|len; - } - mid = (dac_info[lines-1] & 0xfff0) + ((dac_info[lines-1] & 0xf) << 4); - for (i = lines; i < sizeof(dac_info) / sizeof(dac_info[0]); i++) - dac_info[i] = mid; - //for(i=len=0; i < lines; i++) { - // printf("%03i : %03i : %i\n", i, dac_info[i]>>4, dac_info[i]&0xf); - // len+=dac_info[i]&0xf; - //} - //printf("rate is %i, len %f\n", PsndRate, (double)PsndRate/(Pico.m.pal ? 50.0 : 60.0)); - //printf("len total: %i, last pos: %i\n", len, pos); - //exit(8); -} - - -PICO_INTERNAL void PsndReset(void) -{ - void *ym2612_regs; - - // also clear the internal registers+addr line - ym2612_regs = YM2612GetRegs(); - memset(ym2612_regs, 0, 0x200+4); - timers_reset(); - - PsndRerate(0); -} - - -// to be called after changing sound rate or chips -void PsndRerate(int preserve_state) -{ - void *state = NULL; - int target_fps = Pico.m.pal ? 50 : 60; - - // not all rates are supported in MCD mode due to mp3 decoder limitations - if (PicoAHW & PAHW_MCD) { - if (PsndRate != 11025 && PsndRate != 22050 && PsndRate != 44100) PsndRate = 22050; - PicoOpt |= POPT_EN_STEREO; // force stereo - } - - if (preserve_state) { - state = malloc(0x200); - if (state == NULL) return; - memcpy(state, YM2612GetRegs(), 0x200); - } - YM2612Init(Pico.m.pal ? OSC_PAL/7 : OSC_NTSC/7, PsndRate); - if (preserve_state) { - // feed it back it's own registers, just like after loading state - memcpy(YM2612GetRegs(), state, 0x200); - ym2612_unpack_state(); - if ((PicoAHW & PAHW_MCD) && !(Pico_mcd->s68k_regs[0x36] & 1) && (Pico_mcd->scd.Status_CDC & 1)) - cdda_start_play(); - } - - if (preserve_state) memcpy(state, sn76496_regs, 28*4); // remember old state - SN76496_init(Pico.m.pal ? OSC_PAL/15 : OSC_NTSC/15, PsndRate); - if (preserve_state) memcpy(sn76496_regs, state, 28*4); // restore old state - - if (state) - free(state); - - // calculate PsndLen - PsndLen=PsndRate / target_fps; - PsndLen_exc_add=((PsndRate - PsndLen*target_fps)<<16) / target_fps; - PsndLen_exc_cnt=0; - - // recalculate dac info - dac_recalculate(); - - if (PicoAHW & PAHW_MCD) - pcm_set_rate(PsndRate); - - // clear all buffers - memset32(PsndBuffer, 0, sizeof(PsndBuffer)/4); - memset(cdda_out_buffer, 0, sizeof(cdda_out_buffer)); - if (PsndOut) - PsndClear(); - - // set mixer - PsndMix_32_to_16l = (PicoOpt & POPT_EN_STEREO) ? mix_32_to_16l_stereo : mix_32_to_16_mono; - - if (PicoAHW & PAHW_PICO) - PicoReratePico(); -} - - -PICO_INTERNAL void PsndDoDAC(int line_to) -{ - int pos, pos1, len; - int dout = ym2612.dacout; - int line_from = PsndDacLine; - - PsndDacLine = line_to + 1; - - pos =dac_info[line_from]>>4; - pos1=dac_info[line_to]; - len = ((pos1>>4)-pos) + (pos1&0xf); - if (!len) return; - - if (PicoOpt & POPT_EN_STEREO) { - short *d = PsndOut + pos*2; - for (; len > 0; len--, d+=2) *d = dout; - } else { - short *d = PsndOut + pos; - for (; len > 0; len--, d++) *d = dout; - } - -#if 0 - if (do_pcm) { - int *d = PsndBuffer; - d += (PicoOpt&8) ? pos*2 : pos; - pcm_update(d, len, 1); - } -#endif -} - -// cdda -static pm_file *cdda_stream = NULL; - -static void cdda_raw_update(int *buffer, int length) -{ - int ret, cdda_bytes; - if (cdda_stream == NULL) return; - - cdda_bytes = length*4; - if (PsndRate <= 22050) cdda_bytes *= 2; - if (PsndRate < 22050) cdda_bytes *= 2; - - ret = pm_read(cdda_out_buffer, cdda_bytes, cdda_stream); - if (ret < cdda_bytes) { - memset((char *)cdda_out_buffer + ret, 0, cdda_bytes - ret); - cdda_stream = NULL; - return; - } - - // now mix - switch (PsndRate) { - case 44100: mix_16h_to_32(buffer, cdda_out_buffer, length*2); break; - case 22050: mix_16h_to_32_s1(buffer, cdda_out_buffer, length*2); break; - case 11025: mix_16h_to_32_s2(buffer, cdda_out_buffer, length*2); break; - } -} - -PICO_INTERNAL void cdda_start_play(void) -{ - int lba_offset, index, lba_length, i; - - elprintf(EL_STATUS, "cdda play track #%i", Pico_mcd->scd.Cur_Track); - - index = Pico_mcd->scd.Cur_Track - 1; - - lba_offset = Pico_mcd->scd.Cur_LBA - Track_to_LBA(index + 1); - if (lba_offset < 0) lba_offset = 0; - lba_offset += Pico_mcd->TOC.Tracks[index].Offset; - - // find the actual file for this track - for (i = index; i >= 0; i--) - if (Pico_mcd->TOC.Tracks[i].F != NULL) break; - - if (Pico_mcd->TOC.Tracks[i].F == NULL) { - elprintf(EL_STATUS|EL_ANOMALY, "no track?!"); - return; - } - - if (Pico_mcd->TOC.Tracks[i].ftype == TYPE_MP3) - { - int pos1024 = 0; - - lba_length = Pico_mcd->TOC.Tracks[i].Length; - for (i++; i < Pico_mcd->TOC.Last_Track; i++) { - if (Pico_mcd->TOC.Tracks[i].F != NULL) break; - lba_length += Pico_mcd->TOC.Tracks[i].Length; - } - - if (lba_offset) - pos1024 = lba_offset * 1024 / lba_length; - - mp3_start_play(Pico_mcd->TOC.Tracks[index].F, pos1024); - return; - } - - cdda_stream = Pico_mcd->TOC.Tracks[i].F; - PicoCDBufferFlush(); // buffering relies on fp not being touched - pm_seek(cdda_stream, lba_offset * 2352, SEEK_SET); - if (Pico_mcd->TOC.Tracks[i].ftype == TYPE_WAV) - { - // skip headers, assume it's 44kHz stereo uncompressed - pm_seek(cdda_stream, 44, SEEK_CUR); - } -} - - -PICO_INTERNAL void PsndClear(void) -{ - int len = PsndLen; - if (PsndLen_exc_add) len++; - if (PicoOpt & POPT_EN_STEREO) - memset32((int *) PsndOut, 0, len); // assume PsndOut to be aligned - else { - short *out = PsndOut; - if ((int)out & 2) { *out++ = 0; len--; } - memset32((int *) out, 0, len/2); - if (len & 1) out[len-1] = 0; - } -} - - -PICO_INTERNAL int PsndRender(int offset, int length) -{ - int buf32_updated = 0; - int *buf32 = PsndBuffer+offset; - int stereo = (PicoOpt & 8) >> 3; - // emulating CD && PCM option enabled && PCM chip on && have enabled channels - int do_pcm = (PicoAHW & PAHW_MCD) && (PicoOpt&POPT_EN_MCD_PCM) && - (Pico_mcd->pcm.control & 0x80) && Pico_mcd->pcm.enabled; - offset <<= stereo; - -#if !SIMPLE_WRITE_SOUND - if (offset == 0) { // should happen once per frame - // compensate for float part of PsndLen - PsndLen_exc_cnt += PsndLen_exc_add; - if (PsndLen_exc_cnt >= 0x10000) { - PsndLen_exc_cnt -= 0x10000; - length++; - } - } -#endif - - // PSG - if (PicoOpt & POPT_EN_PSG) - SN76496Update(PsndOut+offset, length, stereo); - - if (PicoAHW & PAHW_PICO) { - PicoPicoPCMUpdate(PsndOut+offset, length, stereo); - return length; - } - - // Add in the stereo FM buffer - if (PicoOpt & POPT_EN_FM) { - buf32_updated = YM2612UpdateOne(buf32, length, stereo, 1); - } else - memset32(buf32, 0, length<s68k_regs[0x36] & 1) && (Pico_mcd->scd.Status_CDC & 1)) - { - // note: only 44, 22 and 11 kHz supported, with forced stereo - int index = Pico_mcd->scd.Cur_Track - 1; - - if (Pico_mcd->TOC.Tracks[index].ftype == TYPE_MP3) - mp3_update(buf32, length, stereo); - else - cdda_raw_update(buf32, length); - } - - // convert + limit to normal 16bit output - PsndMix_32_to_16l(PsndOut+offset, buf32, length); - - return length; -} - - -// ----------------------------------------------------------------- -// z80 stuff - -#ifdef _USE_MZ80 - -// memhandlers for mz80 core -unsigned char mz80_read(UINT32 a, struct MemoryReadByte *w) { return z80_read(a); } -void mz80_write(UINT32 a, UINT8 d, struct MemoryWriteByte *w) { z80_write(d, a); } - -// structures for mz80 core -static struct MemoryReadByte mz80_mem_read[]= -{ - {0x0000,0xffff,mz80_read}, - {(UINT32) -1,(UINT32) -1,NULL} -}; -static struct MemoryWriteByte mz80_mem_write[]= -{ - {0x0000,0xffff,mz80_write}, - {(UINT32) -1,(UINT32) -1,NULL} -}; -static struct z80PortRead mz80_io_read[] ={ - {(UINT16) -1,(UINT16) -1,NULL} -}; -static struct z80PortWrite mz80_io_write[]={ - {(UINT16) -1,(UINT16) -1,NULL} -}; - -int mz80_run(int cycles) -{ - int ticks_pre = mz80GetElapsedTicks(0); - mz80exec(cycles); - return mz80GetElapsedTicks(0) - ticks_pre; -} - -#endif - -#ifdef _USE_DRZ80 - -struct DrZ80 drZ80; - -static unsigned int DrZ80_rebasePC(unsigned short a) -{ - drZ80.Z80PC_BASE = (unsigned int) Pico.zram; - return drZ80.Z80PC_BASE + a; -} - -static unsigned int DrZ80_rebaseSP(unsigned short a) -{ - drZ80.Z80SP_BASE = (unsigned int) Pico.zram; - return drZ80.Z80SP_BASE + a; -} -#endif - -#if defined(_USE_DRZ80) || defined(_USE_CZ80) -static unsigned char z80_in(unsigned short p) -{ - elprintf(EL_ANOMALY, "Z80 port %04x read", p); - return 0xff; -} - -static void z80_out(unsigned short p,unsigned char d) -{ - elprintf(EL_ANOMALY, "Z80 port %04x write %02x", p, d); -} -#endif - - -// z80 functionality wrappers -PICO_INTERNAL void z80_init(void) -{ -#ifdef _USE_MZ80 - struct mz80context z80; - - // z80 - mz80init(); - // Modify the default context - mz80GetContext(&z80); - - // point mz80 stuff - z80.z80Base=Pico.zram; - z80.z80MemRead=mz80_mem_read; - z80.z80MemWrite=mz80_mem_write; - z80.z80IoRead=mz80_io_read; - z80.z80IoWrite=mz80_io_write; - - mz80SetContext(&z80); -#endif -#ifdef _USE_DRZ80 - memset(&drZ80, 0, sizeof(struct DrZ80)); - drZ80.z80_rebasePC=DrZ80_rebasePC; - drZ80.z80_rebaseSP=DrZ80_rebaseSP; - drZ80.z80_read8 =z80_read; - drZ80.z80_read16 =NULL; - drZ80.z80_write8 =z80_write; - drZ80.z80_write16 =NULL; - drZ80.z80_in =z80_in; - drZ80.z80_out =z80_out; - drZ80.z80_irq_callback=NULL; -#endif -#ifdef _USE_CZ80 - memset(&CZ80, 0, sizeof(CZ80)); - Cz80_Init(&CZ80); - Cz80_Set_Fetch(&CZ80, 0x0000, 0x1fff, (UINT32)Pico.zram); // main RAM - Cz80_Set_Fetch(&CZ80, 0x2000, 0x3fff, (UINT32)Pico.zram); // mirror - Cz80_Set_ReadB(&CZ80, (UINT8 (*)(UINT32 address))z80_read); // unused (hacked in) - Cz80_Set_WriteB(&CZ80, z80_write); - Cz80_Set_INPort(&CZ80, z80_in); - Cz80_Set_OUTPort(&CZ80, z80_out); -#endif -} - -PICO_INTERNAL void z80_reset(void) -{ -#ifdef _USE_MZ80 - mz80reset(); -#endif -#ifdef _USE_DRZ80 - memset(&drZ80, 0, 0x54); - drZ80.Z80F = (1<<2); // set ZFlag - drZ80.Z80F2 = (1<<2); // set ZFlag - drZ80.Z80IX = 0xFFFF << 16; - drZ80.Z80IY = 0xFFFF << 16; - drZ80.Z80IM = 0; // 1? - drZ80.z80irqvector = 0xff0000; // RST 38h - drZ80.Z80PC = drZ80.z80_rebasePC(0); - drZ80.Z80SP = drZ80.z80_rebaseSP(0x2000); // 0xf000 ? -#endif -#ifdef _USE_CZ80 - Cz80_Reset(&CZ80); - Cz80_Set_Reg(&CZ80, CZ80_IX, 0xffff); - Cz80_Set_Reg(&CZ80, CZ80_IY, 0xffff); - Cz80_Set_Reg(&CZ80, CZ80_SP, 0x2000); -#endif - Pico.m.z80_fakeval = 0; // for faking when Z80 is disabled -} - -#if 0 -static int had_irq = 0, z80_ppc, z80_ops_done = 0; -int z80_cycles_left = 0; - -void z80_int(void) -{ - had_irq = 1; -} - -static void xfail(void) -{ - printf("PC: %04x, %04x\n", Cz80_Get_Reg(&CZ80, CZ80_PC), z80_ppc); - printf("z80_ops_done done: %i\n", z80_ops_done); - exit(1); -} - -int z80_run(int cycles) -{ - int fail = 0; - int cdrz, ccz; - - z80_cycles_left = cycles; - z80_ppc = Cz80_Get_Reg(&CZ80, CZ80_PC); - - if (had_irq) { - printf("irq @ %04x\n", Cz80_Get_Reg(&CZ80, CZ80_PC)); - Cz80_Set_IRQ(&CZ80, 0, HOLD_LINE); - drZ80.Z80_IRQ = 1; - had_irq = 0; - } - - while (z80_cycles_left > 0) - { - ccz = Cz80_Exec(&CZ80, 1); - cdrz = 1 - DrZ80Run(&drZ80, 1); - - if (drZ80.Z80_IRQ && (drZ80.Z80IF&1)) - cdrz += 1 - DrZ80Run(&drZ80, 1); // cz80 processes IRQ after EI, DrZ80 does not - - if (cdrz != ccz) { - printf("cycles: %i vs %i\n", cdrz, ccz); - fail = 1; - } - - if (drZ80.Z80PC - drZ80.Z80PC_BASE != Cz80_Get_Reg(&CZ80, CZ80_PC)) { - printf("PC: %04x vs %04x\n", drZ80.Z80PC - drZ80.Z80PC_BASE, Cz80_Get_Reg(&CZ80, CZ80_PC)); - fail = 1; - } - - if (fail) xfail(); - - z80_ops_done++; - z80_cycles_left -= ccz; - z80_ppc = Cz80_Get_Reg(&CZ80, CZ80_PC); - } - - return co - z80_cycles_left; -} -#endif - - -PICO_INTERNAL void z80_pack(unsigned char *data) -{ -#if defined(_USE_MZ80) - struct mz80context mz80; - *(int *)data = 0x00005A6D; // "mZ" - mz80GetContext(&mz80); - memcpy(data+4, &mz80.z80clockticks, sizeof(mz80)-5*4); // don't save base&memhandlers -#elif defined(_USE_DRZ80) - *(int *)data = 0x015A7244; // "DrZ" v1 - drZ80.Z80PC = drZ80.z80_rebasePC(drZ80.Z80PC-drZ80.Z80PC_BASE); - drZ80.Z80SP = drZ80.z80_rebaseSP(drZ80.Z80SP-drZ80.Z80SP_BASE); - memcpy(data+4, &drZ80, 0x54); -#elif defined(_USE_CZ80) - *(int *)data = 0x00007a43; // "Cz" - *(int *)(data+4) = Cz80_Get_Reg(&CZ80, CZ80_PC); - memcpy(data+8, &CZ80, (INT32)&CZ80.BasePC - (INT32)&CZ80); -#endif -} - -PICO_INTERNAL void z80_unpack(unsigned char *data) -{ -#if defined(_USE_MZ80) - if (*(int *)data == 0x00005A6D) { // "mZ" save? - struct mz80context mz80; - mz80GetContext(&mz80); - memcpy(&mz80.z80clockticks, data+4, sizeof(mz80)-5*4); - mz80SetContext(&mz80); - } else { - z80_reset(); - z80_int(); - } -#elif defined(_USE_DRZ80) - if (*(int *)data == 0x015A7244) { // "DrZ" v1 save? - memcpy(&drZ80, data+4, 0x54); - // update bases - drZ80.Z80PC = drZ80.z80_rebasePC(drZ80.Z80PC-drZ80.Z80PC_BASE); - drZ80.Z80SP = drZ80.z80_rebaseSP(drZ80.Z80SP-drZ80.Z80SP_BASE); - } else { - z80_reset(); - drZ80.Z80IM = 1; - z80_int(); // try to goto int handler, maybe we won't execute trash there? - } -#elif defined(_USE_CZ80) - if (*(int *)data == 0x00007a43) { // "Cz" save? - memcpy(&CZ80, data+8, (INT32)&CZ80.BasePC - (INT32)&CZ80); - Cz80_Set_Reg(&CZ80, CZ80_PC, *(int *)(data+4)); - } else { - z80_reset(); - z80_int(); - } -#endif -} - -PICO_INTERNAL void z80_exit(void) -{ -#if defined(_USE_MZ80) - mz80shutdown(); -#endif -} - -#if 1 // defined(__DEBUG_PRINT) || defined(__GP2X__) || defined(__GIZ__) -PICO_INTERNAL void z80_debug(char *dstr) -{ -#if defined(_USE_DRZ80) - sprintf(dstr, "Z80 state: PC: %04x SP: %04x\n", drZ80.Z80PC-drZ80.Z80PC_BASE, drZ80.Z80SP-drZ80.Z80SP_BASE); -#elif defined(_USE_CZ80) - sprintf(dstr, "Z80 state: PC: %04x SP: %04x\n", CZ80.PC - CZ80.BasePC, CZ80.SP.W); -#endif -} -#endif