//------------------------------------------------------------------------ // Project : VST SDK // // Category : Interfaces // Filename : pluginterfaces/vst/ivstunits.h // Created by : Steinberg, 2005 // Description : VST Units Interfaces // //----------------------------------------------------------------------------- // This file is part of a Steinberg SDK. It is subject to the license terms // in the LICENSE file found in the top-level directory of this distribution // and at www.steinberg.net/sdklicenses. // No part of the SDK, including this file, may be copied, modified, propagated, // or distributed except according to the terms contained in the LICENSE file. //----------------------------------------------------------------------------- #pragma once #include "pluginterfaces/base/funknown.h" #include "pluginterfaces/vst/vsttypes.h" //------------------------------------------------------------------------ #include "pluginterfaces/base/falignpush.h" //------------------------------------------------------------------------ //------------------------------------------------------------------------ namespace Steinberg { class IBStream; //------------------------------------------------------------------------ namespace Vst { //------------------------------------------------------------------------ /** Special UnitIDs for UnitInfo */ static const UnitID kRootUnitId = 0; ///< identifier for the top level unit (root) static const UnitID kNoParentUnitId = -1; ///< used for the root unit which does not have a parent. //------------------------------------------------------------------------ /** Special ProgramListIDs for UnitInfo */ static const ProgramListID kNoProgramListId = -1; ///< no programs are used in the unit. //------------------------------------------------------------------------ /** Basic Unit Description. \see IUnitInfo */ struct UnitInfo { UnitID id; ///< unit identifier UnitID parentUnitId; ///< identifier of parent unit (kNoParentUnitId: does not apply, this unit is the root) String128 name; ///< name, optional for the root component, required otherwise ProgramListID programListId; ///< id of program list used in unit (kNoProgramListId = no programs used in this unit) }; //------------------------------------------------------------------------ /** Basic Program List Description. \see IUnitInfo */ struct ProgramListInfo { ProgramListID id; ///< program list identifier String128 name; ///< name of program list int32 programCount; ///< number of programs in this list }; //------------------------------------------------------------------------ /** Special programIndex value for IUnitHandler::notifyProgramListChange */ static const int32 kAllProgramInvalid = -1; ///< all program information is invalid //------------------------------------------------------------------------ /** Host callback for unit support: Vst::IUnitHandler \ingroup vstIHost vst300 - [host imp] - [extends IComponentHandler] - [released: 3.0.0] - [optional] Host callback interface, used with IUnitInfo. Retrieve via queryInterface from IComponentHandler. \see \ref vst3Units, IUnitInfo */ class IUnitHandler : public FUnknown { public: //------------------------------------------------------------------------ /** Notify host when a module is selected in plug-in GUI. */ virtual tresult PLUGIN_API notifyUnitSelection (UnitID unitId) = 0; /** Tell host that the plug-in controller changed a program list (rename, load, PitchName changes). \param listId is the specified program list ID to inform. \param programIndex : when kAllProgramInvalid, all program information is invalid, otherwise only the program of given index. */ virtual tresult PLUGIN_API notifyProgramListChange (ProgramListID listId, int32 programIndex) = 0; //------------------------------------------------------------------------ static const FUID iid; }; DECLARE_CLASS_IID (IUnitHandler, 0x4B5147F8, 0x4654486B, 0x8DAB30BA, 0x163A3C56) //------------------------------------------------------------------------ /** Host callback for extended unit support: Vst::IUnitHandler2 \ingroup vstIHost vst365 - [host imp] - [extends IUnitHandler] - [released: 3.6.5] - [optional] Host callback interface, used with IUnitInfo. Retrieve via queryInterface from IComponentHandler. The plug-in has the possibility to inform the host with notifyUnitByBusChange that something has changed in the bus - unit assignment, the host then has to recall IUnitInfo::getUnitByBus in order to get the new relations between busses and unit. \see \ref vst3Units, IUnitHandler */ class IUnitHandler2 : public FUnknown { public: //------------------------------------------------------------------------ /** Tell host that assignment Unit-Bus defined by IUnitInfo::getUnitByBus has changed. */ virtual tresult PLUGIN_API notifyUnitByBusChange () = 0; //------------------------------------------------------------------------ static const FUID iid; }; DECLARE_CLASS_IID (IUnitHandler2, 0xF89F8CDF, 0x699E4BA5, 0x96AAC9A4, 0x81452B01) //------------------------------------------------------------------------ /** Edit controller extension to describe the plug-in structure: Vst::IUnitInfo \ingroup vstIPlug vst300 - [plug imp] - [extends IEditController] - [released: 3.0.0] - [optional] IUnitInfo describes the internal structure of the plug-in. - The root unit is the component itself, so getUnitCount must return 1 at least. - The root unit id has to be 0 (kRootUnitId). - Each unit can reference one program list - this reference must not change. - Each unit, using a program list, references one program of the list. \see \ref vst3Units, IUnitHandler */ class IUnitInfo : public FUnknown { public: //------------------------------------------------------------------------ /** Returns the flat count of units. */ virtual int32 PLUGIN_API getUnitCount () = 0; /** Gets UnitInfo for a given index in the flat list of unit. */ virtual tresult PLUGIN_API getUnitInfo (int32 unitIndex, UnitInfo& info /*out*/) = 0; /** Component intern program structure. */ /** Gets the count of Program List. */ virtual int32 PLUGIN_API getProgramListCount () = 0; /** Gets for a given index the Program List Info. */ virtual tresult PLUGIN_API getProgramListInfo (int32 listIndex, ProgramListInfo& info /*out*/) = 0; /** Gets for a given program list ID and program index its program name. */ virtual tresult PLUGIN_API getProgramName (ProgramListID listId, int32 programIndex, String128 name /*out*/) = 0; /** Gets for a given program list ID, program index and attributeId the associated attribute value. */ virtual tresult PLUGIN_API getProgramInfo (ProgramListID listId, int32 programIndex, CString attributeId /*in*/, String128 attributeValue /*out*/) = 0; /** Returns kResultTrue if the given program index of a given program list ID supports PitchNames. */ virtual tresult PLUGIN_API hasProgramPitchNames (ProgramListID listId, int32 programIndex) = 0; /** Gets the PitchName for a given program list ID, program index and pitch. If PitchNames are changed the plug-in should inform the host with IUnitHandler::notifyProgramListChange. */ virtual tresult PLUGIN_API getProgramPitchName (ProgramListID listId, int32 programIndex, int16 midiPitch, String128 name /*out*/) = 0; // units selection -------------------- /** Gets the current selected unit. */ virtual UnitID PLUGIN_API getSelectedUnit () = 0; /** Sets a new selected unit. */ virtual tresult PLUGIN_API selectUnit (UnitID unitId) = 0; /** Gets the according unit if there is an unambiguous relation between a channel or a bus and a unit. This method mainly is intended to find out which unit is related to a given MIDI input channel. */ virtual tresult PLUGIN_API getUnitByBus (MediaType type, BusDirection dir, int32 busIndex, int32 channel, UnitID& unitId /*out*/) = 0; /** Receives a preset data stream. - If the component supports program list data (IProgramListData), the destination of the data stream is the program specified by list-Id and program index (first and second parameter) - If the component supports unit data (IUnitData), the destination is the unit specified by the first parameter - in this case parameter programIndex is < 0). */ virtual tresult PLUGIN_API setUnitProgramData (int32 listOrUnitId, int32 programIndex, IBStream* data) = 0; //------------------------------------------------------------------------ static const FUID iid; }; DECLARE_CLASS_IID (IUnitInfo, 0x3D4BD6B5, 0x913A4FD2, 0xA886E768, 0xA5EB92C1) //------------------------------------------------------------------------ /** Component extension to access program list data: Vst::IProgramListData \ingroup vstIPlug vst300 - [plug imp] - [extends IComponent] - [released: 3.0.0] - [optional] A component can support program list data via this interface or/and unit preset data (IUnitData). \see IUnitData, \ref vst3MultitimbralPrograms */ class IProgramListData : public FUnknown { public: //------------------------------------------------------------------------ /** Returns kResultTrue if the given Program List ID supports Program Data. */ virtual tresult PLUGIN_API programDataSupported (ProgramListID listId) = 0; /** Gets for a given program list ID and program index the program Data. */ virtual tresult PLUGIN_API getProgramData (ProgramListID listId, int32 programIndex, IBStream* data) = 0; /** Sets for a given program list ID and program index a program Data. */ virtual tresult PLUGIN_API setProgramData (ProgramListID listId, int32 programIndex, IBStream* data) = 0; //------------------------------------------------------------------------ static const FUID iid; }; DECLARE_CLASS_IID (IProgramListData, 0x8683B01F, 0x7B354F70, 0xA2651DEC, 0x353AF4FF) //------------------------------------------------------------------------ /** Component extension to access unit data: Vst::IUnitData \ingroup vstIPlug vst300 - [plug imp] - [extends IComponent] - [released: 3.0.0] - [optional] A component can support unit preset data via this interface or program list data (IProgramListData). \see \ref vst3ProgramLists */ class IUnitData : public FUnknown { public: //------------------------------------------------------------------------ /** Returns kResultTrue if the specified unit supports export and import of preset data. */ virtual tresult PLUGIN_API unitDataSupported (UnitID unitID) = 0; /** Gets the preset data for the specified unit. */ virtual tresult PLUGIN_API getUnitData (UnitID unitId, IBStream* data) = 0; /** Sets the preset data for the specified unit. */ virtual tresult PLUGIN_API setUnitData (UnitID unitId, IBStream* data) = 0; //------------------------------------------------------------------------ static const FUID iid; }; DECLARE_CLASS_IID (IUnitData, 0x6C389611, 0xD391455D, 0xB870B833, 0x94A0EFDD) //------------------------------------------------------------------------ } // namespace Vst } // namespace Steinberg //------------------------------------------------------------------------ #include "pluginterfaces/base/falignpop.h" //------------------------------------------------------------------------