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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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31
src/sound_gus.c
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@ -849,6 +849,15 @@ void gus_poll_timer_2(void *p)
}
}
static void gus_update(gus_t *gus)
{
for (; gus->pos < sound_pos_global; gus->pos++)
{
gus->buffer[0][gus->pos] = gus->out_l;
gus->buffer[1][gus->pos] = gus->out_r;
}
}
void gus_poll_wave(void *p)
{
gus_t *gus = (gus_t *)p;
@ -857,7 +866,9 @@ void gus_poll_wave(void *p)
int16_t v;
int32_t vl;
int update_irqs = 0;
gus_update(gus);
gus->samp_timer += gus->samp_latch;
gus->out_l = gus->out_r = 0;
@ -1018,25 +1029,13 @@ void gus_poll_wave(void *p)
pollgusirqs(gus);
}
void gus_poll(void *p)
{
gus_t *gus = (gus_t *)p;
if (gus->pos >= SOUNDBUFLEN)
return;
//pclog("gus_poll\n");
gus->buffer[0][gus->pos] = gus->out_l;
gus->buffer[1][gus->pos] = gus->out_r;
gus->pos++;
}
static void gus_get_buffer(int16_t *buffer, int len, void *p)
{
gus_t *gus = (gus_t *)p;
int c;
gus_update(gus);
for (c = 0; c < len * 2; c++)
{
buffer[c] += gus->buffer[c & 1][c >> 1];
@ -1085,7 +1084,7 @@ void *gus_init()
timer_add(gus_poll_timer_1, &gus->timer_1, TIMER_ALWAYS_ENABLED, gus);
timer_add(gus_poll_timer_2, &gus->timer_2, TIMER_ALWAYS_ENABLED, gus);
sound_add_handler(gus_poll, gus_get_buffer, gus);
sound_add_handler(gus_get_buffer, gus);
return gus;
}