af_rubberband: pitch correction with librubberband

If "--af=rubberband" is used, librubberband will be used to speed up or
slow down audio with pitch correction.

This still has some problems: the audio delay is not calculated
correctly, so the audio position jitters around by a few milliseconds.
This will probably ruin video timing.

1 files changed, 4 insertions, 0 deletions

diff --git a/wscript b/wscript
index 8f3961cf97..e7e939a629 100644
--- a/wscript
+++ b/wscript
@@ -336,6 +336,10 @@ If you really mean to compile without libass support use --disable-libass."
         'desc': 'LADSPA plugin support',
         'func': check_statement('ladspa.h', 'LADSPA_Descriptor ld = {0}'),
     }, {
+        'name': '--rubberband',
+        'desc': 'librubberband support',
+        'func': check_pkg_config('rubberband', '>= 1.8.0'),
+    }, {
         'name': '--libbs2b',
         'desc': 'libbs2b audio filter support',
         'func': check_pkg_config('libbs2b'),