Tweak transmission of MMC on locate. Should fix #3121.

[ardour.git] / libs / ardour / audio_buffer.cc

diff --git a/libs/ardour/audio_buffer.cc b/libs/ardour/audio_buffer.cc
index 4871035e80cb11cf0d56a7489c80c8dbb6106ccb..8b2d5c744f116310f24d9453ae9da02b2a3f2547 100644 (file)
--- a/libs/ardour/audio_buffer.cc
+++ b/libs/ardour/audio_buffer.cc
@@ -1,40 +1,41 @@
 /*
-    Copyright (C) 2006-2007 Paul Davis 
-    
+    Copyright (C) 2006-2007 Paul Davis
+
     This program is free software; you can redistribute it and/or modify it
     under the terms of the GNU General Public License as published by the Free
     Software Foundation; either version 2 of the License, or (at your option)
     any later version.
-    
+
     This program is distributed in the hope that it will be useful, but WITHOUT
     ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
     FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
     for more details.
-    
+
     You should have received a copy of the GNU General Public License along
     with this program; if not, write to the Free Software Foundation, Inc.,
     675 Mass Ave, Cambridge, MA 02139, USA.
 */
 
-#include <ardour/audio_buffer.h>
+#include <errno.h>
 
-#ifdef __x86_64__
-static const int CPU_CACHE_ALIGN = 64;
-#else
-static const int CPU_CACHE_ALIGN = 16; /* arguably 32 on most arches, but it matters less */
-#endif
+#include "ardour/audio_buffer.h"
+#include "pbd/error.h"
+#include "pbd/malign.h"
 
-namespace ARDOUR {
+#include "i18n.h"
 
+using namespace PBD;
+using namespace ARDOUR;
 
 AudioBuffer::AudioBuffer(size_t capacity)
        : Buffer(DataType::AUDIO, capacity)
        , _owns_data (false)
        , _data (0)
 {
-       if (_capacity) {
+       if (_capacity > 0) {
                _owns_data = true; // prevent resize() from gagging
                resize (_capacity);
+               _silent = false; // force silence on the intial buffer state
                silence (_capacity);
        }
 }
@@ -48,26 +49,22 @@ AudioBuffer::~AudioBuffer()
 void
 AudioBuffer::resize (size_t size)
 {
-       if (!_owns_data || (size < _capacity)) {
+       if (!_owns_data) {
                return;
        }
 
-       if (_data) {
-               free (_data);
+       if (size < _capacity) {
+               _size = size;
+               return;
        }
 
+       free (_data);
+
        _capacity = size;
        _size = size;
        _silent = false;
 
-#ifdef NO_POSIX_MEMALIGN
-       _data =  (Sample *) malloc(sizeof(Sample) * _capacity);
-#else
-       posix_memalign((void**)&_data, CPU_CACHE_ALIGN, sizeof(Sample) * _capacity);
-#endif 
-       
-       _owns_data = true;
+       cache_aligned_malloc ((void**) &_data, sizeof (Sample) * _capacity);
 }
 
-} // namespace ARDOUR