161 lines
3.1 KiB
C
161 lines
3.1 KiB
C
/****************************************************************
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MAME / MESS functions
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****************************************************************/
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#include <string.h> // for memset
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#include <stdlib.h> // for free
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#include <stddef.h> // for NULL
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#include "mamedef.h"
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//#include "sndintrf.h"
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//#include "streams.h"
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#include "ay8910.h" // must be always included (for YM2149_PIN26_LOW)
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#include "emu2149.h"
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#include "ay_intf.h"
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#ifdef ENABLE_ALL_CORES
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#define EC_MAME 0x01 // AY8910 core from MAME
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#endif
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#define EC_EMU2149 0x00 // EMU2149 from NSFPlay
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/* for stream system */
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typedef struct _ayxx_state ayxx_state;
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struct _ayxx_state
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{
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void *chip;
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int EMU_CORE;
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};
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void ayxx_stream_update(void *_info, stream_sample_t **outputs, int samples)
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{
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ayxx_state *info = (ayxx_state *)_info;
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switch(info->EMU_CORE)
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{
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#ifdef ENABLE_ALL_CORES
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case EC_MAME:
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ay8910_update_one(info->chip, outputs, samples);
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break;
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#endif
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case EC_EMU2149:
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PSG_calc_stereo((PSG*)info->chip, outputs, samples);
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break;
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}
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}
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int device_start_ayxx(void **_info, int EMU_CORE, int clock, UINT8 chip_type, UINT8 Flags, int CHIP_SAMPLING_MODE, int CHIP_SAMPLE_RATE)
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{
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ayxx_state *info;
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int rate;
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#ifdef ENABLE_ALL_CORES
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if (EMU_CORE >= 0x02)
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EMU_CORE = EC_EMU2149;
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#else
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EMU_CORE = EC_EMU2149;
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#endif
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info = (ayxx_state *) calloc(1, sizeof(ayxx_state));
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*_info = (void *) info;
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info->EMU_CORE = EMU_CORE;
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if (Flags & YM2149_PIN26_LOW)
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rate = clock / 16;
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else
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rate = clock / 8;
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if (((CHIP_SAMPLING_MODE & 0x01) && rate < CHIP_SAMPLE_RATE) ||
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CHIP_SAMPLING_MODE == 0x02)
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rate = CHIP_SAMPLE_RATE;
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switch(EMU_CORE)
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{
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#ifdef ENABLE_ALL_CORES
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case EC_MAME:
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rate = ay8910_start(&info->chip, clock, chip_type, Flags);
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break;
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#endif
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case EC_EMU2149:
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if (Flags & YM2149_PIN26_LOW)
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clock /= 2;
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info->chip = PSG_new(clock, rate);
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if (info->chip == NULL)
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return 0;
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PSG_setVolumeMode((PSG*)info->chip, (chip_type & 0x10) ? 1 : 2);
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PSG_setFlags((PSG*)info->chip, Flags & ~YM2149_PIN26_LOW);
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break;
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}
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return rate;
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}
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void device_stop_ayxx(void *_info)
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{
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ayxx_state *info = (ayxx_state *)_info;
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switch(info->EMU_CORE)
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{
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#ifdef ENABLE_ALL_CORES
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case EC_MAME:
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ay8910_stop_ym(info->chip);
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break;
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#endif
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case EC_EMU2149:
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PSG_delete((PSG*)info->chip);
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break;
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}
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info->chip = NULL;
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free(info);
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}
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void device_reset_ayxx(void *_info)
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{
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ayxx_state *info = (ayxx_state *)_info;
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switch(info->EMU_CORE)
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{
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#ifdef ENABLE_ALL_CORES
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case EC_MAME:
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ay8910_reset_ym(info->chip);
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break;
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#endif
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case EC_EMU2149:
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PSG_reset((PSG*)info->chip);
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break;
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}
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}
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void ayxx_w(void *_info, offs_t offset, UINT8 data)
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{
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ayxx_state *info = (ayxx_state *)_info;
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switch(info->EMU_CORE)
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{
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#ifdef ENABLE_ALL_CORES
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case EC_MAME:
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ay8910_write_ym(info->chip, offset, data);
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break;
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#endif
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case EC_EMU2149:
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PSG_writeIO((PSG*)info->chip, offset, data);
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break;
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}
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}
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void ayxx_set_mute_mask(void *_info, UINT32 MuteMask)
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{
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ayxx_state *info = (ayxx_state *)_info;
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switch(info->EMU_CORE)
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{
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#ifdef ENABLE_ALL_CORES
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case EC_MAME:
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ay8910_set_mute_mask_ym(info->chip, MuteMask);
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break;
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#endif
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case EC_EMU2149:
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PSG_setMask((PSG*)info->chip, MuteMask);
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break;
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}
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return;
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}
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