Add basic memory-used stuff for butler and reduce minimum audio

readahead quite a bit.  This in turn reduces the maximum butler memory
usage as it will keep getting audio (and hence video) until the
minimum audio readahead is hit.

1 files changed, 6 insertions, 0 deletions

diff --git a/src/lib/raw_image_proxy.cc b/src/lib/raw_image_proxy.cc
index ea702f138..094b50d05 100644
--- a/src/lib/raw_image_proxy.cc
+++ b/src/lib/raw_image_proxy.cc
@@ -89,3 +89,9 @@ RawImageProxy::pixel_format () const
 {
 	return _image->pixel_format ();
 }
+
+size_t
+RawImageProxy::memory_used () const
+{
+	return _image->memory_used ();
+}