[pulseaudio-commits] [SCM] PulseAudio Sound Server branch, master, updated. v0.9.15-test7-34-g7fc2382

[Lennart Poettering]

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The master branch has been updated
      from  daa945aa324af5b71332a3cd07890d1cf3a1cb60 (commit)

- Log -----------------------------------------------------------------
7fc2382 properly handle interpolation when queried x is left of last data position
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Summary of changes:
 src/pulsecore/time-smoother.c |   18 +++++++++++++++++-
 1 files changed, 17 insertions(+), 1 deletions(-)

-----------------------------------------------------------------------

commit 7fc2382a0aaaec70401468940afd266252bda178
Author: Lennart Poettering <lennart at poettering.net>
Date:   Mon Apr 6 16:38:38 2009 +0200

    properly handle interpolation when queried x is left of last data position

diff --git a/src/pulsecore/time-smoother.c b/src/pulsecore/time-smoother.c
index 55ac868..047ab6c 100644
--- a/src/pulsecore/time-smoother.c
+++ b/src/pulsecore/time-smoother.c
@@ -291,7 +291,8 @@ static void estimate(pa_smoother *s, pa_usec_t x, pa_usec_t *y, double *deriv) {
     pa_assert(s);
     pa_assert(y);
 
-    if (!s->smoothing || x >= s->px) {
+    if (x >= s->px) {
+        /* Linear interpolation right from px */
         int64_t t;
 
         /* The requested point is right of the point where we wanted
@@ -307,7 +308,22 @@ static void estimate(pa_smoother *s, pa_usec_t x, pa_usec_t *y, double *deriv) {
         if (deriv)
             *deriv = s->dp;
 
+    } else if (x <= s->ex) {
+        /* Linear interpolation left from ex */
+        int64_t t;
+
+        t = (int64_t) s->ey - (int64_t) llrint(s->de * (double) (s->ex - x));
+
+        if (t < 0)
+            t = 0;
+
+        *y = (pa_usec_t) t;
+
+        if (deriv)
+            *deriv = s->de;
+
     } else {
+        /* Spline interpolation between ex and px */
         double tx, ty;
 
         /* Ok, we're not yet on track, thus let's interpolate, and

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