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latency calculation fix

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git-svn-id: file:///home/lennart/svn/public/pulseaudio/trunk@258 fefdeb5f-60dc-0310-8127-8f9354f1896f
This commit is contained in:
Lennart Poettering 2004-10-27 14:14:30 +00:00
parent ee452b0f06
commit 49e16ffc6c
3 changed files with 40 additions and 33 deletions
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44
polyp/polyplib-stream.c
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@ -687,6 +687,24 @@ pa_usec_t pa_stream_get_time(struct pa_stream *s, const struct pa_latency_info *
return usec;
}
static pa_usec_t time_counter_diff(struct pa_stream *s, pa_usec_t t, pa_usec_t c, int *negative) {
assert(s);
if (negative)
*negative = 0;
if (c < t) {
if (s->direction == PA_STREAM_RECORD) {
if (negative)
*negative = 1;
return t-c;
} else
return 0;
} else
return c-t;
}
pa_usec_t pa_stream_get_latency(struct pa_stream *s, const struct pa_latency_info *i, int *negative) {
pa_usec_t t, c;
assert(s && i);
@ -694,18 +712,7 @@ pa_usec_t pa_stream_get_latency(struct pa_stream *s, const struct pa_latency_inf
t = pa_stream_get_time(s, i);
c = pa_bytes_to_usec(s->counter, &s->sample_spec);
if (t <= c) {
if (negative)
*negative = 1;
return c-t;
} else {
if (negative)
*negative = 0;
return t-c;
}
return 0;
return time_counter_diff(s, t, c, negative);
}
const struct pa_sample_spec* pa_stream_get_sample_spec(struct pa_stream *s) {
@ -749,15 +756,6 @@ pa_usec_t pa_stream_get_interpolated_latency(struct pa_stream *s, int *negative)
t = pa_stream_get_interpolated_time(s);
c = pa_bytes_to_usec(s->counter, &s->sample_spec);
if (t <= c) {
if (negative)
*negative = 1;
return c-t;
} else {
if (negative)
*negative = 0;
return t-c;
}
return time_counter_diff(s, t, c, negative);
}