a7d006b637
The new code is based on timestamps, rather than delays. This eliminates the need to update every timer in timer_process(), which cost a non-trivial amount of CPU time on low-end machines. This involved changes to every user of the timer code, so this change almost certainly introduces bugs.
34 lines
927 B
C
34 lines
927 B
C
#include "sound.h"
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typedef struct opl_t
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{
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int chip_nr[2];
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pc_timer_t timers[2][2];
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int16_t filtbuf[2];
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int16_t buffer[MAXSOUNDBUFLEN * 2];
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int pos;
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} opl_t;
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uint8_t opl2_read(uint16_t a, void *priv);
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void opl2_write(uint16_t a, uint8_t v, void *priv);
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uint8_t opl2_l_read(uint16_t a, void *priv);
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void opl2_l_write(uint16_t a, uint8_t v, void *priv);
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uint8_t opl2_r_read(uint16_t a, void *priv);
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void opl2_r_write(uint16_t a, uint8_t v, void *priv);
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uint8_t opl3_read(uint16_t a, void *priv);
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void opl3_write(uint16_t a, uint8_t v, void *priv);
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void opl2_poll(opl_t *opl, int16_t *bufl, int16_t *bufr);
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void opl3_poll(opl_t *opl, int16_t *bufl, int16_t *bufr);
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void opl2_init(opl_t *opl);
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void opl3_init(opl_t *opl, int opl_emu);
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void opl2_update2(opl_t *opl);
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void opl3_update2(opl_t *opl);
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#define OPL_DBOPL 0
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#define OPL_NUKED 1
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