Adding upstream version 2:20.4+dfsg.upstream/2%20.4+dfsg

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 65 insertions, 0 deletions

diff --git a/xbmc/pictures/PictureScalingAlgorithm.cpp b/xbmc/pictures/PictureScalingAlgorithm.cpp
new file mode 100644
index 0000000..65cfcd9
--- /dev/null
+++ b/xbmc/pictures/PictureScalingAlgorithm.cpp
@@ -0,0 +1,65 @@
+/*
+ *  Copyright (C) 2015-2018 Team Kodi
+ *  This file is part of Kodi - https://kodi.tv
+ *
+ *  SPDX-License-Identifier: GPL-2.0-or-later
+ *  See LICENSES/README.md for more information.
+ */
+
+#include <algorithm>
+
+extern "C" {
+#include <libswscale/swscale.h>
+}
+
+#include "PictureScalingAlgorithm.h"
+#include "utils/StringUtils.h"
+
+CPictureScalingAlgorithm::Algorithm CPictureScalingAlgorithm::Default = CPictureScalingAlgorithm::Bicubic;
+
+CPictureScalingAlgorithm::AlgorithmMap CPictureScalingAlgorithm::m_algorithms = {
+  { FastBilinear,     { "fast_bilinear",    SWS_FAST_BILINEAR } },
+  { Bilinear,         { "bilinear",         SWS_BILINEAR } },
+  { Bicubic,          { "bicubic",          SWS_BICUBIC } },
+  { Experimental,     { "experimental",     SWS_X } },
+  { NearestNeighbor,  { "nearest_neighbor", SWS_POINT } },
+  { AveragingArea,    { "averaging_area",   SWS_AREA } },
+  { Bicublin,         { "bicublin",         SWS_BICUBLIN } },
+  { Gaussian,         { "gaussian",         SWS_GAUSS } },
+  { Sinc,             { "sinc",             SWS_SINC } },
+  { Lanczos,          { "lanczos",          SWS_LANCZOS } },
+  { BicubicSpline,    { "bicubic_spline",   SWS_SPLINE } },
+};
+
+CPictureScalingAlgorithm::Algorithm CPictureScalingAlgorithm::FromString(const std::string& scalingAlgorithm)
+{
+  const auto& algorithm = std::find_if(m_algorithms.begin(), m_algorithms.end(),
+    [&scalingAlgorithm](const std::pair<Algorithm, ScalingAlgorithm>& algo) { return StringUtils::EqualsNoCase(algo.second.name, scalingAlgorithm); });
+  if (algorithm != m_algorithms.end())
+    return algorithm->first;
+
+  return NoAlgorithm;
+}
+
+std::string CPictureScalingAlgorithm::ToString(Algorithm scalingAlgorithm)
+{
+  const auto& algorithm = m_algorithms.find(scalingAlgorithm);
+  if (algorithm != m_algorithms.end())
+    return algorithm->second.name;
+
+  return "";
+}
+
+int CPictureScalingAlgorithm::ToSwscale(const std::string& scalingAlgorithm)
+{
+  return ToSwscale(FromString(scalingAlgorithm));
+}
+
+int CPictureScalingAlgorithm::ToSwscale(Algorithm scalingAlgorithm)
+{
+  const auto& algorithm = m_algorithms.find(scalingAlgorithm);
+  if (algorithm != m_algorithms.end())
+    return algorithm->second.swscale;
+
+  return ToSwscale(Default);
+}