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Refactored sound code - slight speedup.

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This commit is contained in:
TomW 2016-02-10 20:49:28 +00:00
commit 3a57341837
33 changed files with 706 additions and 535 deletions
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20
src/sound_adlib.c
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@ -9,29 +9,19 @@
typedef struct adlib_t
{
opl_t opl;
int16_t buffer[SOUNDBUFLEN * 2];
int pos;
} adlib_t;
static void adlib_poll(void *p)
{
adlib_t *adlib = (adlib_t *)p;
if (adlib->pos >= SOUNDBUFLEN) return;
opl2_poll(&adlib->opl, &adlib->buffer[adlib->pos * 2], &adlib->buffer[(adlib->pos * 2) + 1]);
adlib->pos++;
}
static void adlib_get_buffer(int16_t *buffer, int len, void *p)
{
adlib_t *adlib = (adlib_t *)p;
int c;
opl2_update2(&adlib->opl);
for (c = 0; c < len * 2; c++)
buffer[c] += adlib->buffer[c];
buffer[c] += adlib->opl.buffer[c];
adlib->pos = 0;
adlib->opl.pos = 0;
}
void *adlib_init()
@ -42,7 +32,7 @@ void *adlib_init()
pclog("adlib_init\n");
opl2_init(&adlib->opl);
io_sethandler(0x0388, 0x0002, opl2_read, NULL, NULL, opl2_write, NULL, NULL, &adlib->opl);
sound_add_handler(adlib_poll, adlib_get_buffer, adlib);
sound_add_handler(adlib_get_buffer, adlib);
return adlib;
}