mirror of
https://github.com/juce-framework/JUCE.git
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102 lines
3.1 KiB
C++
102 lines
3.1 KiB
C++
/*
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==============================================================================
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This file is part of the JUCE library.
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Copyright (c) 2022 - Raw Material Software Limited
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JUCE is an open source library subject to commercial or open-source
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licensing.
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By using JUCE, you agree to the terms of both the JUCE 7 End-User License
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Agreement and JUCE Privacy Policy.
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End User License Agreement: www.juce.com/juce-7-licence
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Privacy Policy: www.juce.com/juce-privacy-policy
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Or: You may also use this code under the terms of the GPL v3 (see
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www.gnu.org/licenses).
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JUCE IS PROVIDED "AS IS" WITHOUT ANY WARRANTY, AND ALL WARRANTIES, WHETHER
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EXPRESSED OR IMPLIED, INCLUDING MERCHANTABILITY AND FITNESS FOR PURPOSE, ARE
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DISCLAIMED.
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==============================================================================
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*/
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#include <cstdint>
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#include <cstdio>
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#ifdef _WIN32
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#include <windows.h>
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#include <tchar.h>
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HMODULE dlopen (const char* filename, int) { return LoadLibrary (filename); }
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FARPROC dlsym (HMODULE handle, const char* name) { return GetProcAddress (handle, name); }
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void printError()
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{
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constexpr DWORD numElements = 256;
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TCHAR messageBuffer[numElements]{};
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FormatMessage (FORMAT_MESSAGE_FROM_SYSTEM | FORMAT_MESSAGE_IGNORE_INSERTS,
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nullptr,
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GetLastError(),
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MAKELANGID (LANG_NEUTRAL, SUBLANG_DEFAULT),
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messageBuffer,
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numElements - 1,
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nullptr);
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_tprintf ("%s", messageBuffer);
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}
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enum { RTLD_LAZY = 0 };
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#else
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#include <dlfcn.h>
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void printError() { printf ("%s\n", dlerror()); }
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#endif
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// Replicating part of the LV2 header here so that we don't have to set up any
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// custom include paths for this file.
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// Normally this would be a bad idea, but the LV2 API has to keep these definitions
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// in order to remain backwards-compatible.
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extern "C"
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{
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typedef struct LV2_Descriptor
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{
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const void* a;
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const void* b;
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const void* c;
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const void* d;
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const void* e;
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const void* f;
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const void* g;
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const void* (*extension_data)(const char* uri);
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} LV2_Descriptor;
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}
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int main (int argc, const char** argv)
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{
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if (argc != 2)
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return 1;
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const auto* libraryPath = argv[1];
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struct RecallFeature
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{
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int (*doRecall) (const char*);
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};
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if (auto* handle = dlopen (libraryPath, RTLD_LAZY))
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{
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if (auto* getDescriptor = reinterpret_cast<const LV2_Descriptor* (*) (uint32_t)> (dlsym (handle, "lv2_descriptor")))
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if (auto* descriptor = getDescriptor (0))
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if (auto* extensionData = descriptor->extension_data)
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if (auto* recallFeature = reinterpret_cast<const RecallFeature*> (extensionData ("https://lv2-extensions.juce.com/turtle_recall")))
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if (auto* doRecall = recallFeature->doRecall)
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return doRecall (libraryPath);
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}
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else
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{
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printError();
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}
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return 1;
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}
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