mirror of
https://github.com/robbert-vdh/yabridge.git
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Robbert van der Helm
112 lines
4.0 KiB
C++
112 lines
4.0 KiB
C++
// yabridge: a Wine VST bridge
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// Copyright (C) 2020 Robbert van der Helm
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//
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// This program is free software: you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with this program. If not, see <https://www.gnu.org/licenses/>.
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#include <iostream>
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#include "native-includes.h"
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// `native-includes.h` has to be included before any other files as otherwise we
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// might get the wrong version of certain libraries
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#define WIN32_LEAN_AND_MEAN
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#include <vestige/aeffect.h>
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#include <windows.h>
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#include "../common/communication.h"
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/**
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* A function pointer to what should be the entry point of a VST plugin.
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*/
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using VstEntryPoint = AEffect*(VST_CALL_CONV*)(audioMasterCallback);
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intptr_t VST_CALL_CONV
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host_callback(AEffect*, int32_t, int32_t, intptr_t, void*, float);
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int main(int argc, char* argv[]) {
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// We pass the name of the VST plugin .dll file to load and the Unix domain
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// socket to connect to in plugin/bridge.cpp as the first two arguments of
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// this process.
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if (argc < 3) {
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std::cerr
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<< "Usage: yabridge-host.exe <vst_plugin_dll> <unix_domain_socket>"
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<< std::endl;
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return 1;
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}
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const std::string plugin_dll_path(argv[1]);
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const std::string socket_endpoint_path(argv[2]);
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// I sadly could not get Boost.DLL to work here, so we'll just load the VST
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// plugisn by hand
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const auto vst_handle = LoadLibrary(plugin_dll_path.c_str());
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// TODO: Fall back to the old entry points
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const auto vst_entry_point = reinterpret_cast<VstEntryPoint>(
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reinterpret_cast<size_t>(GetProcAddress(vst_handle, "VSTPluginMain")));
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// TODO: Check whether this returned a null pointer
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AEffect* plugin = vst_entry_point(host_callback);
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// TODO: Check the spec, how large should this be?
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std::vector<char> buffer(2048, 0);
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plugin->dispatcher(plugin, effGetEffectName, 0, 0, buffer.data(), 0.0);
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std::string plugin_title(buffer.data());
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// Connect to the sockets for communication once the plugin has finished
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// loading
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// TODO: The program should terminate gracefully when one of the sockets
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// gets closed
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// TODO: Remove debug and move most of these things to
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// `wine-host/bridge.cpp`, similar to `plugin/bridge.cpp`
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boost::asio::io_context io_context;
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boost::asio::local::stream_protocol::endpoint socket_endpoint(
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socket_endpoint_path);
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// The naming convention for these sockets is `<from>_<to>_<event>`. For
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// instance the socket named `host_vst_dispatch` forwards
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// `AEffect.dispatch()` calls from the native VST host to the Windows VST
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// plugin (through the Wine VST host).
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boost::asio::local::stream_protocol::socket host_vst_dispatch(io_context);
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host_vst_dispatch.connect(socket_endpoint);
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// TODO: Remove debug, we're just reporting the plugin's name we retrieved
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// above
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while (true) {
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auto event = read_object<Event>(std::cin);
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EventResult response;
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if (event.opcode == effGetEffectName) {
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response.result = plugin_title;
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response.return_value = 1;
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} else {
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response.return_value = 0;
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}
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write_object(std::cout, response);
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}
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}
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// TODO: Placeholder
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intptr_t VST_CALL_CONV host_callback(AEffect* plugin,
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int32_t opcode,
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int32_t parameter,
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intptr_t value,
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void* result,
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float option) {
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return 1;
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}
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