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Robbert van der Helm
96 lines
3.4 KiB
C
96 lines
3.4 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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#pragma once
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// This file contains important opcodes and structs missing from
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// `vestige/aeffectx.h`
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/**
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* Glanced from https://www.kvraudio.com/forum/viewtopic.php?p=2744675#p2744675.
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* These opcodes are used to retrieve names and specific properties for a
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* plugin's inputs and outputs, if the plugin supports this. The index parameter
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* is used to specify the index of the channel being queried, and the plugin
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* gets passed an empty struct to describe the input/output through the data
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* parameter. Finally the plugin returns a string containing the input or output
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* name.
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*/
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[[maybe_unused]] constexpr int effGetInputProperties = 33;
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[[maybe_unused]] constexpr int effGetOutputProperties = 34;
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/**
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* Found on
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* https://github.com/falkTX/Carla/blob/07e876a743c5e15c358be170af2e523eadc7dbfa/source/utils/CarlaVstUtils.hpp#L75
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* Used to assign names to MIDI keys, for some reason uses the `VstMidiKeyName`
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* struct defined below rather than a simple string.
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*/
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[[maybe_unused]] constexpr int effGetMidiKeyName = 66;
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/**
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* Events used to tell a plugin to use a specific speaker arrangement (is this
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* used outside of things like Dolby Atmos?), or to query its preferred speaker
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* arrangement. Found on the same list as above.
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*/
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[[maybe_unused]] constexpr int effSetSpeakerArrangement = 42;
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[[maybe_unused]] constexpr int effGetSpeakerArrangement = 69;
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/**
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* The struct that's being passed through the data parameter during the
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* `effGetInputProperties` and `effGetOutputProperties` opcodes. Reverse
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* engineered by attaching gdb to Bitwig. The actual fields are missing but for
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* this application we don't need them.
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*/
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struct VstIOProperties {
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char data[128];
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};
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/**
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* The struct that's passed during `effGetMidiKeyName`. Will be used to write
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* the name of a key to (i.e. the name of a sample for drum machines). Again,
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* not sure about the exact contents of this struct, but at least the size is
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* right!
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*/
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struct VstMidiKeyName {
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char data[80];
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};
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/**
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* Contains information about a speaker, used during
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* `eff{Get,Set}SpeakerArrangement`.
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*/
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struct VstSpeaker {
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char data[112];
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};
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/**
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* Contains information about a speaker setup, either for input or output. Used
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* during `eff{Get,Set}SpeakerArrangement`. Reverse engineered from Renoise by
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* attaching gdb and dumping both the `value` and `data` pointers when the host
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* calls opcode 42.
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*
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* Use the `DynamicSpeakerArrangement` class to serialize and construct these
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* objects.
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*/
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struct VstSpeakerArrangement {
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int flags;
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int num_speakers;
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/**
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* Variable length array of speakers. Similar to how `VstEvents` works, but
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* with an array of objects instead of an array of pointers to objects.
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*/
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VstSpeaker speakers[2];
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};
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