Init

.gitignore

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+/build
+/out
+CMakePresets.json
+/.vs

CMakeLists.txt

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+cmake_minimum_required (VERSION 3.8)
+
+# Enable Hot Reload for MSVC compilers if supported.
+if (POLICY CMP0141)
+  cmake_policy(SET CMP0141 NEW)
+  set(CMAKE_MSVC_DEBUG_INFORMATION_FORMAT "$<IF:$<AND:$<C_COMPILER_ID:MSVC>,$<CXX_COMPILER_ID:MSVC>>,$<$<CONFIG:Debug,RelWithDebInfo>:EditAndContinue>,$<$<CONFIG:Debug,RelWithDebInfo>:ProgramDatabase>>")
+endif()
+
+project ("vs-misc-tomcup")
+
+set(VapourSynthSDK "C:/Users/jilig/Downloads/upscale/VapourSynth/sdk")
+
+add_library(${PROJECT_NAME} SHARED  "vs-misc-tomcup.cpp" )
+
+add_subdirectory(csv-parser)
+
+target_include_directories(${PROJECT_NAME} PRIVATE ${VapourSynthSDK}/include  csv-parser/include)
+target_link_directories(${PROJECT_NAME} PRIVATE ${VapourSynthSDK}/lib64)
+target_link_libraries(${PROJECT_NAME} VapourSynth.lib csv)
+
+set_property(TARGET ${PROJECT_NAME} PROPERTY CXX_STANDARD 20)

vs-misc-tomcup.cpp

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+#include "VapourSynth4.h"
+#include "VSHelper4.h"
+#include <memory>
+#include <vector>
+#include "csv.hpp"
+
+struct SCDetectData {
+private:
+    const VSAPI* vsapi;
+public:
+    VSNode* node;
+    std::vector<int> scdata;
+
+    explicit SCDetectData(const VSAPI* vsapi) noexcept : vsapi(vsapi) {
+
+    }
+
+    ~SCDetectData() {
+        vsapi->freeNode(node);
+    }
+};
+
+
+static const VSFrame* VS_CC filterGetFrame(int n, int activationReason, void* instanceData, void** frameData, VSFrameContext* frameCtx, VSCore* core, const VSAPI* vsapi) {
+    SCDetectData* d = (SCDetectData*)instanceData;
+
+    if (activationReason == arInitial) {
+        vsapi->requestFrameFilter(n, d->node, frameCtx);
+    }
+    else if (activationReason == arAllFramesReady) {
+        const VSFrame* frame = vsapi->getFrameFilter(n, d->node, frameCtx);
+
+        /* your code here... */
+
+        return frame;
+    }
+
+    return nullptr;
+}
+
+static void VS_CC filterFree(void* instanceData, VSCore* core, const VSAPI* vsapi) {
+    delete reinterpret_cast<SCDetectData*>(instanceData);
+}
+
+static void VS_CC filterCreate(const VSMap* in, VSMap* out, void* userData, VSCore* core, const VSAPI* vsapi) {
+    auto data{ std::make_unique<SCDetectData>(vsapi) };
+
+    data->node = vsapi->mapGetNode(in, "clip", 0, nullptr);
+
+    csv::CSVReader reader(vsapi->mapGetData(in, "scfile", 0, nullptr));
+    for (csv::CSVRow& row : reader) {
+        data->scdata.push_back(row["Start Frame"].get<int>());
+    }
+
+    VSFilterDependency deps[] = { {data->node, rpGeneral} }; /* Depending the the request patterns you may want to change this */
+    vsapi->createVideoFilter(out, "SCDetect", vsapi->getVideoInfo(data->node), filterGetFrame, filterFree, fmParallel, deps, 1, data.release(), core);
+}
+
+//////////////////////////////////////////
+// Init
+
+VS_EXTERNAL_API(void) VapourSynthPluginInit2(VSPlugin* plugin, const VSPLUGINAPI* vspapi) {
+    vspapi->configPlugin("com.tomcup.SCDetect", "misc", "Mark the clip with PySceneDetect's output", VS_MAKE_VERSION(0, 1), VAPOURSYNTH_API_VERSION, 0, plugin);
+    vspapi->registerFunction("SCDetect", "clip:vnode;scfile:data[]", "clip:vnode;", filterCreate, nullptr, plugin);
+}