Move things round a bit.

1 files changed, 117 insertions, 0 deletions

diff --git a/src/lib/scaler.cc b/src/lib/scaler.cc
new file mode 100644
index 000000000..1e63d66b3
--- /dev/null
+++ b/src/lib/scaler.cc
@@ -0,0 +1,117 @@
+/*
+    Copyright (C) 2012 Carl Hetherington <cth@carlh.net>
+
+    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.
+
+*/
+
+/** @file src/scaler.cc
+ *  @brief A class to describe one of FFmpeg's software scalers.
+ */
+
+#include <iostream>
+#include <cassert>
+extern "C" {
+#include <libswscale/swscale.h>
+}
+#include "scaler.h"
+
+using namespace std;
+
+vector<Scaler const *> Scaler::_scalers;
+
+/** @param f FFmpeg id.
+ *  @param m mplayer command line id.
+ *  @param i Our id.
+ *  @param n User-visible name.
+ */
+Scaler::Scaler (int f, int m, string i, string n)
+	: _ffmpeg_id (f)
+	, _mplayer_id (m)
+	, _id (i)
+	, _name (n)
+{
+
+}
+
+/** @return All available scalers */
+vector<Scaler const *>
+Scaler::all ()
+{
+	return _scalers;
+}
+
+/** Set up the static _scalers vector; must be called before from_*
+ *  methods are used.
+ */
+void
+Scaler::setup_scalers ()
+{
+	_scalers.push_back (new Scaler (SWS_BICUBIC, 2, "bicubic", "Bicubic"));
+	_scalers.push_back (new Scaler (SWS_X, 3, "x", "X"));
+	_scalers.push_back (new Scaler (SWS_AREA, 5, "area", "Area"));
+	_scalers.push_back (new Scaler (SWS_GAUSS, 7, "gauss", "Gaussian"));
+	_scalers.push_back (new Scaler (SWS_LANCZOS, 9, "lanczos", "Lanczos"));
+	_scalers.push_back (new Scaler (SWS_SINC, 8, "sinc", "Sinc"));
+	_scalers.push_back (new Scaler (SWS_SPLINE, 10, "spline", "Spline"));
+	_scalers.push_back (new Scaler (SWS_BILINEAR, 1, "bilinear", "Bilinear"));
+	_scalers.push_back (new Scaler (SWS_FAST_BILINEAR, 0, "fastbilinear", "Fast Bilinear"));
+}
+
+/** @param id One of our ids.
+ *  @return Corresponding scaler, or 0.
+ */
+Scaler const *
+Scaler::from_id (string id)
+{
+	vector<Scaler const *>::iterator i = _scalers.begin ();
+	while (i != _scalers.end() && (*i)->id() != id) {
+		++i;
+	}
+
+	if (i == _scalers.end ()) {
+		return 0;
+	}
+
+	return *i;
+}
+
+/** @param s A scaler from our static list.
+ *  @return Index of the scaler with the list, or -1.
+ */
+int
+Scaler::as_index (Scaler const * s)
+{
+	vector<Scaler*>::size_type i = 0;
+	while (i < _scalers.size() && _scalers[i] != s) {
+		++i;
+	}
+
+	if (i == _scalers.size ()) {
+		return -1;
+	}
+
+	return i;
+}
+
+/** @param i An index returned from as_index().
+ *  @return Corresponding scaler.
+ */
+Scaler const *
+Scaler::from_index (int i)
+{
+	assert (i <= int(_scalers.size ()));
+	return _scalers[i];
+}