X-Git-Url: https://main.carlh.net/gitweb/?a=blobdiff_plain;f=libs%2Fardour%2Fardour%2Fbuffer.h;h=7d6fa75620138bd36234b4a71a4a9c18616bbf5e;hb=22bddf543421f2a75a5a807009ea3e96dcb26cac;hp=e03489568cf2024653b0401c9b2e29edbc997796;hpb=43b17b5df1927a6c08a382c420c49d7ac1014852;p=ardour.git

diff --git a/libs/ardour/ardour/buffer.h b/libs/ardour/ardour/buffer.h
index e03489568c..7d6fa75620 100644
--- a/libs/ardour/ardour/buffer.h
+++ b/libs/ardour/ardour/buffer.h
@@ -1,16 +1,16 @@
 /*
-    Copyright (C) 2006 Paul Davis 
-    
+    Copyright (C) 2006 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.
@@ -19,15 +19,13 @@
 #ifndef __ardour_buffer_h__
 #define __ardour_buffer_h__
 
-#include <cstdlib>
-#include <cassert>
-#include <cstring>
-#include <iostream>
+#include <stddef.h>
+
 #include <boost/utility.hpp>
 
-#include <ardour/types.h>
-#include <ardour/data_type.h>
-#include <ardour/runtime_functions.h>
+#include "ardour/libardour_visibility.h"
+#include "ardour/types.h"
+#include "ardour/data_type.h"
 
 namespace ARDOUR {
 
@@ -38,10 +36,10 @@ namespace ARDOUR {
  * methods to actually access the data).  This provides a way for code that
  * doesn't care about the data type to still deal with buffers (which is
  * why the base class can't be a template).
- * 
+ *
  * To actually read/write buffer contents, use the appropriate derived class.
  */
-class Buffer : public boost::noncopyable
+class LIBARDOUR_API Buffer : public boost::noncopyable
 {
 public:
 	virtual ~Buffer() {}
@@ -49,43 +47,39 @@ public:
 	/** Factory function */
 	static Buffer* create(DataType type, size_t capacity);
 
-	/** Maximum capacity of buffer.
-	 * Note in some cases the entire buffer may not contain valid data, use size. */
+	/** Maximum capacity of buffer. */
 	size_t capacity() const { return _capacity; }
 
-	/** Amount of valid data in buffer.  Use this over capacity almost always. */
-	size_t size() const { return _size; }
-
 	/** Type of this buffer.
 	 * Based on this you can static cast a Buffer* to the desired type. */
 	DataType type() const { return _type; }
 
 	bool silent() const { return _silent; }
-	
+
 	/** Reallocate the buffer used internally to handle at least @a size_t units of data.
 	 *
 	 * The buffer is not silent after this operation. the @a capacity argument
 	 * passed to the constructor must have been non-zero.
 	 */
-	virtual void resize(size_t) = 0;
+	virtual void resize (size_t) = 0;
+
+	/** Clear (eg zero, or empty) buffer */
+	virtual void silence (framecnt_t len, framecnt_t offset = 0) = 0;
 
-	/** Clear (eg zero, or empty) buffer starting at TIME @a offset */
-	virtual void silence(nframes_t len, nframes_t offset=0) = 0;
-	
 	/** Clear the entire buffer */
 	virtual void clear() { silence(_capacity, 0); }
-	
-	virtual void read_from(const Buffer& src, nframes_t offset, nframes_t len) = 0;
 
-protected:
-	Buffer(DataType type, size_t capacity)
-	: _type(type), _capacity(capacity), _size(0), _silent(true)
+	virtual void read_from (const Buffer& src, framecnt_t len, frameoffset_t dst_offset = 0, frameoffset_t src_offset = 0) = 0;
+	virtual void merge_from (const Buffer& src, framecnt_t len, frameoffset_t dst_offset = 0, frameoffset_t src_offset = 0) = 0;
+
+  protected:
+	Buffer(DataType type)
+		: _type(type), _capacity(0), _silent (true)
 	{}
 
-	DataType _type;
-	size_t   _capacity;
-	size_t   _size;
-	bool     _silent;
+	DataType  _type;
+	pframes_t _capacity;
+	bool      _silent;
 };