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Turnaround time must be included in dsp yielding to throttle against other threads. Do at least one per buffer full as well (or things can stick a bit on initial input triggers).

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git-svn-id: svn://svn.rockbox.org/rockbox/trunk@16721 a1c6a512-1295-4272-9138-f99709370657
This commit is contained in:
Michael Sevakis 2008-03-20 17:03:57 +00:00
parent 0b3f241187
commit d3ecbbf988
1 changed files with 9 additions and 3 deletions
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12
apps/dsp.c
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@ -1112,7 +1112,8 @@ int dsp_callback(int msg, intptr_t param)
int dsp_process(struct dsp_config *dsp, char *dst, const char *src[], int count) int dsp_process(struct dsp_config *dsp, char *dst, const char *src[], int count)
{ {
int32_t *tmp[2]; int32_t *tmp[2];
long last_yield = current_tick; static long last_yield;
long tick;
int written = 0; int written = 0;
int samples; int samples;
@ -1126,6 +1127,10 @@ int dsp_process(struct dsp_config *dsp, char *dst, const char *src[], int count)
if (new_gain) if (new_gain)
dsp_set_replaygain(); /* Gain has changed */ dsp_set_replaygain(); /* Gain has changed */
/* Perform at least one yield before starting */
last_yield = current_tick;
yield();
/* Testing function pointers for NULL is preferred since the pointer /* Testing function pointers for NULL is preferred since the pointer
will be preloaded to be used for the call if not. */ will be preloaded to be used for the call if not. */
while (count > 0) while (count > 0)
@ -1162,10 +1167,11 @@ int dsp_process(struct dsp_config *dsp, char *dst, const char *src[], int count)
dst += samples * sizeof (int16_t) * 2; dst += samples * sizeof (int16_t) * 2;
/* yield at least once each tick */ /* yield at least once each tick */
if (current_tick > last_yield) tick = current_tick;
if (TIME_AFTER(tick, last_yield))
{ {
last_yield = tick;
yield(); yield();
last_yield = current_tick;
} }
} }