Add ktx

2026-06-14 19:09:18 +01:00
parent 14bd1a9271
commit 13fa90a0e9
3958 changed files with 999286 additions and 4 deletions
@@ -0,0 +1,118 @@
+// -*- tab-width: 4; -*-
+// vi: set sw=2 ts=4 expandtab:
+
+// Copyright 2022 The Khronos Group Inc.
+// SPDX-License-Identifier: Apache-2.0
+
+//!
+//! @internal
+//! @~English
+//! @file
+//!
+//! @brief Create plugin maps.
+//!
+
+#include "imageio.h"
+
+#include <algorithm>
+#include <cctype>
+#include <iomanip>
+#include <iostream>
+#include <map>
+#include <string>
+#include <sstream>
+#include <stdexcept>
+#include <vector>
+
+#include <stdarg.h>
+
+#define PLUGENTRY(name)                          \
+    ImageInput* name##InputCreate();             \
+    ImageOutput* name##OutputCreate();           \
+    extern const char* name##InputExtensions[];  \
+    extern const char* name##OutputExtensions[];
+#define PLUGENTRY_RO(name)                       \
+    ImageInput* name##InputCreate();             \
+    extern const char* name##InputExtensions[];
+#define PLUGENTRY_WO(name)                       \
+    ImageOutput* name##OutputCreate();           \
+    extern const char* name##OutputExtensions[];
+
+PLUGENTRY_RO(exr);
+PLUGENTRY_RO(jpeg);
+PLUGENTRY_RO(npbm);
+PLUGENTRY(png)
+
+namespace Imageio {
+
+// These combine extensions and format names into a single map.
+InputPluginMap inputFormats;
+OutputPluginMap outputFormats;
+
+void
+declareImageioFormat(const std::string& formatname,
+                     ImageInput::Creator inputCreator,
+                     const char** inputExtensions,
+                     ImageOutput::Creator outputCreator,
+                     const char** outputExtensions)
+{
+    if (inputCreator) {
+        for (const char** e = inputExtensions; e && *e; ++e) {
+            string ext(*e);
+            ext.tolower();
+            if (inputFormats.find(ext) == inputFormats.end()) {
+                inputFormats[ext] = inputCreator;
+            }
+        }
+        if (inputFormats.find(formatname) == inputFormats.end())
+            inputFormats[formatname] = inputCreator;
+    }
+    if (outputCreator) {
+        for (const char** e = outputExtensions; e && *e; ++e) {
+            string ext(*e);
+            ext.tolower();
+            if (outputFormats.find(ext) == outputFormats.end()) {
+                outputFormats[ext] = outputCreator;
+            }
+        }
+        if (outputFormats.find(formatname) == outputFormats.end())
+            outputFormats[formatname] = outputCreator;
+    }
+}
+
+void
+catalogBuiltinPlugins()
+{
+#define DECLAREPLUG(name)                                      \
+        declareImageioFormat(                                  \
+            #name, (ImageInput::Creator)name##InputCreate,     \
+            name##InputExtensions,                             \
+            (ImageOutput::Creator)name##OutputCreate,          \
+            name##OutputExtensions)
+#define DECLAREPLUG_RO(name)                                   \
+        declareImageioFormat(                                  \
+            #name, (ImageInput::Creator)name##InputCreate,     \
+            name##InputExtensions,                             \
+            nullptr, nullptr)
+#define DECLAREPLUG_WO(name)                                   \
+        declareImageioFormat(                                  \
+            nullptr, nullptr,                                  \
+            #name, (ImageOutput::Creator)name##OutputCreate,   \
+            name##OutputExtensions)
+
+#if !defined(DISABLE_OPENEXR)
+    DECLAREPLUG_RO (exr);
+#endif
+#if !defined(DISABLE_JPEG)
+    DECLAREPLUG_RO(jpeg);
+#endif
+#if !defined(DISABLE_NPBM)
+    DECLAREPLUG_RO (npbm);
+#endif
+#if !defined(DISABLE_PNG)
+    DECLAREPLUG (png);
+#endif
+    // 'Raw' format is not in the catalog as an explicit API is a better fit
+}
+
+} // namespace Imageio