diff base/Resampler.h @ 297:c022976d18e8

* Merge from sv-match-alignment branch (excluding alignment-specific document).
  - add aggregate wave model (not yet complete enough to be added as a true
    model in a layer, but there's potential)
  - add play solo mode
  - add alignment model -- unused in plain SV
  - fix two plugin leaks
  - add m3u playlist support (opens all files at once, potentially hazardous)
  - fix retrieval of pre-encoded URLs
  - add ability to resample audio files on import, so as to match rates with
    other files previously loaded; add preference for same
  - add preliminary support in transform code for range and rate of transform
    input
  - reorganise preferences dialog, move dark-background option to preferences,
    add option for temporary directory location

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/base/Resampler.h	Fri Sep 28 13:56:38 2007 +0000
@@ -0,0 +1,49 @@
+/* -*- c-basic-offset: 4 indent-tabs-mode: nil -*-  vi:set ts=8 sts=4 sw=4: */
+
+/*
+    Sonic Visualiser
+    An audio file viewer and annotation editor.
+    Centre for Digital Music, Queen Mary, University of London.
+    
+    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.  See the file
+    COPYING included with this distribution for more information.
+*/
+
+/*
+   This is a modified version of a source file from the 
+   Rubber Band audio timestretcher library.
+   This file copyright 2007 Chris Cannam.
+*/
+
+#ifndef _RESAMPLER_H_
+#define _RESAMPLER_H_
+
+#include <sys/types.h>
+
+class Resampler
+{
+public:
+    enum Quality { Best, FastestTolerable, Fastest };
+
+    Resampler(Quality quality, size_t channels, size_t chunkSize = 0);
+    ~Resampler();
+
+    size_t resample(float **in, float **out,
+                    size_t incount, float ratio,
+                    bool final = false);
+
+    size_t resampleInterleaved(float *in, float *out,
+                               size_t incount, float ratio,
+                               bool final = false);
+
+    void reset();
+
+protected:
+    class D;
+    D *m_d;
+};
+
+#endif