From 937f75796e8116ea5c5f15f06d803e0d0b964bf7 Mon Sep 17 00:00:00 2001
From: paul <paul@d708f5d6-7413-0410-9779-e7cbd77b26cf>
Date: Fri, 27 Mar 2009 15:08:58 +0000
Subject: [PATCH] no-cache-port-buffers fix from stephane letz

git-svn-id: http://subversion.ardour.org/svn/ardour2/ardour2/branches/2.0-ongoing@4911 d708f5d6-7413-0410-9779-e7cbd77b26cf
---
 libs/ardour/ardour/port.h | 21 +++------------------
 libs/ardour/port.cc       |  2 --
 2 files changed, 3 insertions(+), 20 deletions(-)

diff --git a/libs/ardour/ardour/port.h b/libs/ardour/ardour/port.h
index 74eef70d2..bff6c7d29 100644
--- a/libs/ardour/ardour/port.h
+++ b/libs/ardour/ardour/port.h
@@ -33,24 +33,11 @@ class AudioEngine;
 class Port : public sigc::trackable {
    public:
 	virtual ~Port() { 
-		free (_port);
+        // Port is an opage pointer, so should be be desallocated ??
 	}
 
 	Sample *get_buffer (nframes_t nframes) {
-		if (_flags & JackPortIsOutput) {
-			return _buffer;
-		} else {
-			return (Sample *) jack_port_get_buffer (_port, nframes);
-		}
-	}
-
-	void reset_buffer () {
-		if (_flags & JackPortIsOutput) {
-			_buffer = (Sample *) jack_port_get_buffer (_port, 0);
-		} else {
-			_buffer = 0; /* catch illegal attempts to use it */
-		}
-		_silent = false;
+		return (Sample *) jack_port_get_buffer (_port, nframes);
 	}
 
 	std::string name() { 
@@ -166,7 +153,7 @@ class Port : public sigc::trackable {
 	/** Assumes that the port is an audio output port */
 	void silence (nframes_t nframes, nframes_t offset) {
 		if (!_silent) {
-			memset (_buffer + offset, 0, sizeof (Sample) * nframes);
+			memset ((Sample *) jack_port_get_buffer (_port, nframes) + offset, 0, sizeof (Sample) * nframes);
 			if (offset == 0) {
 				/* XXX this isn't really true, but i am not sure
 				   how to set this correctly. we really just
@@ -190,8 +177,6 @@ class Port : public sigc::trackable {
 	
 	/* engine isn't supposed to below here */
 
-	Sample *_buffer;
-
 	/* cache these 3 from JACK so that we can
 	   access them for reconnecting.
 	*/
diff --git a/libs/ardour/port.cc b/libs/ardour/port.cc
index 4b0399702..83c835cac 100644
--- a/libs/ardour/port.cc
+++ b/libs/ardour/port.cc
@@ -42,8 +42,6 @@ Port::Port (jack_port_t *p)
 void
 Port::reset ()
 {
-	reset_buffer ();
-	
 	_last_monitor = false;
 	_silent = false;
 	_metering = 0;
-- 
2.11.4.GIT