4c819222a0
Catch2, ghc-filesystem, lv2 headers and VST3SDK sources preinstalled system packages can be used, optionally and where available, to build sfizz via CMake options: SFIZZ_USE_SYSTEM_CATCH SFIZZ_USE_SYSTEM_GHC_FS SFIZZ_USE_SYSTEM_LV2 SFIZZ_USE_SYSTEM_VST3SDK
256 lines
10 KiB
C
256 lines
10 KiB
C
/*
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Copyright 2008-2016 David Robillard <http://drobilla.net>
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Permission to use, copy, modify, and/or distribute this software for any
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purpose with or without fee is hereby granted, provided that the above
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copyright notice and this permission notice appear in all copies.
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THIS SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*/
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/**
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@defgroup atom Atom
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A generic value container and several data types, see
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<http://lv2plug.in/ns/ext/atom> for details.
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@{
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*/
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#ifndef LV2_ATOM_H
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#define LV2_ATOM_H
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#include <stddef.h>
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#include <stdint.h>
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#define LV2_ATOM_URI "http://lv2plug.in/ns/ext/atom" ///< http://lv2plug.in/ns/ext/atom
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#define LV2_ATOM_PREFIX LV2_ATOM_URI "#" ///< http://lv2plug.in/ns/ext/atom#
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#define LV2_ATOM__Atom LV2_ATOM_PREFIX "Atom" ///< http://lv2plug.in/ns/ext/atom#Atom
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#define LV2_ATOM__AtomPort LV2_ATOM_PREFIX "AtomPort" ///< http://lv2plug.in/ns/ext/atom#AtomPort
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#define LV2_ATOM__Blank LV2_ATOM_PREFIX "Blank" ///< http://lv2plug.in/ns/ext/atom#Blank
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#define LV2_ATOM__Bool LV2_ATOM_PREFIX "Bool" ///< http://lv2plug.in/ns/ext/atom#Bool
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#define LV2_ATOM__Chunk LV2_ATOM_PREFIX "Chunk" ///< http://lv2plug.in/ns/ext/atom#Chunk
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#define LV2_ATOM__Double LV2_ATOM_PREFIX "Double" ///< http://lv2plug.in/ns/ext/atom#Double
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#define LV2_ATOM__Event LV2_ATOM_PREFIX "Event" ///< http://lv2plug.in/ns/ext/atom#Event
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#define LV2_ATOM__Float LV2_ATOM_PREFIX "Float" ///< http://lv2plug.in/ns/ext/atom#Float
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#define LV2_ATOM__Int LV2_ATOM_PREFIX "Int" ///< http://lv2plug.in/ns/ext/atom#Int
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#define LV2_ATOM__Literal LV2_ATOM_PREFIX "Literal" ///< http://lv2plug.in/ns/ext/atom#Literal
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#define LV2_ATOM__Long LV2_ATOM_PREFIX "Long" ///< http://lv2plug.in/ns/ext/atom#Long
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#define LV2_ATOM__Number LV2_ATOM_PREFIX "Number" ///< http://lv2plug.in/ns/ext/atom#Number
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#define LV2_ATOM__Object LV2_ATOM_PREFIX "Object" ///< http://lv2plug.in/ns/ext/atom#Object
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#define LV2_ATOM__Path LV2_ATOM_PREFIX "Path" ///< http://lv2plug.in/ns/ext/atom#Path
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#define LV2_ATOM__Property LV2_ATOM_PREFIX "Property" ///< http://lv2plug.in/ns/ext/atom#Property
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#define LV2_ATOM__Resource LV2_ATOM_PREFIX "Resource" ///< http://lv2plug.in/ns/ext/atom#Resource
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#define LV2_ATOM__Sequence LV2_ATOM_PREFIX "Sequence" ///< http://lv2plug.in/ns/ext/atom#Sequence
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#define LV2_ATOM__Sound LV2_ATOM_PREFIX "Sound" ///< http://lv2plug.in/ns/ext/atom#Sound
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#define LV2_ATOM__String LV2_ATOM_PREFIX "String" ///< http://lv2plug.in/ns/ext/atom#String
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#define LV2_ATOM__Tuple LV2_ATOM_PREFIX "Tuple" ///< http://lv2plug.in/ns/ext/atom#Tuple
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#define LV2_ATOM__URI LV2_ATOM_PREFIX "URI" ///< http://lv2plug.in/ns/ext/atom#URI
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#define LV2_ATOM__URID LV2_ATOM_PREFIX "URID" ///< http://lv2plug.in/ns/ext/atom#URID
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#define LV2_ATOM__Vector LV2_ATOM_PREFIX "Vector" ///< http://lv2plug.in/ns/ext/atom#Vector
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#define LV2_ATOM__atomTransfer LV2_ATOM_PREFIX "atomTransfer" ///< http://lv2plug.in/ns/ext/atom#atomTransfer
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#define LV2_ATOM__beatTime LV2_ATOM_PREFIX "beatTime" ///< http://lv2plug.in/ns/ext/atom#beatTime
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#define LV2_ATOM__bufferType LV2_ATOM_PREFIX "bufferType" ///< http://lv2plug.in/ns/ext/atom#bufferType
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#define LV2_ATOM__childType LV2_ATOM_PREFIX "childType" ///< http://lv2plug.in/ns/ext/atom#childType
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#define LV2_ATOM__eventTransfer LV2_ATOM_PREFIX "eventTransfer" ///< http://lv2plug.in/ns/ext/atom#eventTransfer
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#define LV2_ATOM__frameTime LV2_ATOM_PREFIX "frameTime" ///< http://lv2plug.in/ns/ext/atom#frameTime
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#define LV2_ATOM__supports LV2_ATOM_PREFIX "supports" ///< http://lv2plug.in/ns/ext/atom#supports
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#define LV2_ATOM__timeUnit LV2_ATOM_PREFIX "timeUnit" ///< http://lv2plug.in/ns/ext/atom#timeUnit
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#define LV2_ATOM_REFERENCE_TYPE 0 ///< The special type for a reference atom
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#ifdef __cplusplus
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extern "C" {
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#endif
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/** @cond */
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/** This expression will fail to compile if double does not fit in 64 bits. */
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typedef char lv2_atom_assert_double_fits_in_64_bits[
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((sizeof(double) <= sizeof(uint64_t)) * 2) - 1];
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/** @endcond */
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/**
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Return a pointer to the contents of an Atom. The "contents" of an atom
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is the data past the complete type-specific header.
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@param type The type of the atom, e.g. LV2_Atom_String.
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@param atom A variable-sized atom.
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*/
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#define LV2_ATOM_CONTENTS(type, atom) \
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((void*)((uint8_t*)(atom) + sizeof(type)))
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/**
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Const version of LV2_ATOM_CONTENTS.
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*/
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#define LV2_ATOM_CONTENTS_CONST(type, atom) \
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((const void*)((const uint8_t*)(atom) + sizeof(type)))
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/**
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Return a pointer to the body of an Atom. The "body" of an atom is the
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data just past the LV2_Atom head (i.e. the same offset for all types).
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*/
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#define LV2_ATOM_BODY(atom) LV2_ATOM_CONTENTS(LV2_Atom, atom)
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/**
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Const version of LV2_ATOM_BODY.
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*/
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#define LV2_ATOM_BODY_CONST(atom) LV2_ATOM_CONTENTS_CONST(LV2_Atom, atom)
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/** The header of an atom:Atom. */
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typedef struct {
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uint32_t size; /**< Size in bytes, not including type and size. */
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uint32_t type; /**< Type of this atom (mapped URI). */
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} LV2_Atom;
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/** An atom:Int or atom:Bool. May be cast to LV2_Atom. */
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typedef struct {
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LV2_Atom atom; /**< Atom header. */
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int32_t body; /**< Integer value. */
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} LV2_Atom_Int;
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/** An atom:Long. May be cast to LV2_Atom. */
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typedef struct {
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LV2_Atom atom; /**< Atom header. */
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int64_t body; /**< Integer value. */
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} LV2_Atom_Long;
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/** An atom:Float. May be cast to LV2_Atom. */
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typedef struct {
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LV2_Atom atom; /**< Atom header. */
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float body; /**< Floating point value. */
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} LV2_Atom_Float;
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/** An atom:Double. May be cast to LV2_Atom. */
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typedef struct {
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LV2_Atom atom; /**< Atom header. */
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double body; /**< Floating point value. */
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} LV2_Atom_Double;
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/** An atom:Bool. May be cast to LV2_Atom. */
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typedef LV2_Atom_Int LV2_Atom_Bool;
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/** An atom:URID. May be cast to LV2_Atom. */
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typedef struct {
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LV2_Atom atom; /**< Atom header. */
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uint32_t body; /**< URID. */
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} LV2_Atom_URID;
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/** An atom:String. May be cast to LV2_Atom. */
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typedef struct {
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LV2_Atom atom; /**< Atom header. */
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/* Contents (a null-terminated UTF-8 string) follow here. */
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} LV2_Atom_String;
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/** The body of an atom:Literal. */
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typedef struct {
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uint32_t datatype; /**< Datatype URID. */
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uint32_t lang; /**< Language URID. */
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/* Contents (a null-terminated UTF-8 string) follow here. */
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} LV2_Atom_Literal_Body;
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/** An atom:Literal. May be cast to LV2_Atom. */
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typedef struct {
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LV2_Atom atom; /**< Atom header. */
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LV2_Atom_Literal_Body body; /**< Body. */
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} LV2_Atom_Literal;
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/** An atom:Tuple. May be cast to LV2_Atom. */
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typedef struct {
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LV2_Atom atom; /**< Atom header. */
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/* Contents (a series of complete atoms) follow here. */
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} LV2_Atom_Tuple;
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/** The body of an atom:Vector. */
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typedef struct {
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uint32_t child_size; /**< The size of each element in the vector. */
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uint32_t child_type; /**< The type of each element in the vector. */
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/* Contents (a series of packed atom bodies) follow here. */
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} LV2_Atom_Vector_Body;
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/** An atom:Vector. May be cast to LV2_Atom. */
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typedef struct {
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LV2_Atom atom; /**< Atom header. */
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LV2_Atom_Vector_Body body; /**< Body. */
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} LV2_Atom_Vector;
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/** The body of an atom:Property (e.g. in an atom:Object). */
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typedef struct {
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uint32_t key; /**< Key (predicate) (mapped URI). */
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uint32_t context; /**< Context URID (may be, and generally is, 0). */
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LV2_Atom value; /**< Value atom header. */
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/* Value atom body follows here. */
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} LV2_Atom_Property_Body;
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/** An atom:Property. May be cast to LV2_Atom. */
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typedef struct {
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LV2_Atom atom; /**< Atom header. */
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LV2_Atom_Property_Body body; /**< Body. */
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} LV2_Atom_Property;
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/** The body of an atom:Object. May be cast to LV2_Atom. */
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typedef struct {
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uint32_t id; /**< URID, or 0 for blank. */
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uint32_t otype; /**< Type URID (same as rdf:type, for fast dispatch). */
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/* Contents (a series of property bodies) follow here. */
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} LV2_Atom_Object_Body;
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/** An atom:Object. May be cast to LV2_Atom. */
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typedef struct {
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LV2_Atom atom; /**< Atom header. */
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LV2_Atom_Object_Body body; /**< Body. */
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} LV2_Atom_Object;
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/** The header of an atom:Event. Note this type is NOT an LV2_Atom. */
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typedef struct {
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/** Time stamp. Which type is valid is determined by context. */
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union {
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int64_t frames; /**< Time in audio frames. */
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double beats; /**< Time in beats. */
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} time;
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LV2_Atom body; /**< Event body atom header. */
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/* Body atom contents follow here. */
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} LV2_Atom_Event;
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/**
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The body of an atom:Sequence (a sequence of events).
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The unit field is either a URID that described an appropriate time stamp
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type, or may be 0 where a default stamp type is known. For
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LV2_Descriptor::run(), the default stamp type is audio frames.
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The contents of a sequence is a series of LV2_Atom_Event, each aligned
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to 64-bits, e.g.:
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<pre>
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| Event 1 (size 6) | Event 2
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| | | | | | | | |
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| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
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|FRAMES |SUBFRMS|TYPE |SIZE |DATADATADATAPAD|FRAMES |SUBFRMS|...
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</pre>
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*/
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typedef struct {
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uint32_t unit; /**< URID of unit of event time stamps. */
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uint32_t pad; /**< Currently unused. */
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/* Contents (a series of events) follow here. */
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} LV2_Atom_Sequence_Body;
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/** An atom:Sequence. */
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typedef struct {
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LV2_Atom atom; /**< Atom header. */
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LV2_Atom_Sequence_Body body; /**< Body. */
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} LV2_Atom_Sequence;
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/**
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@}
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*/
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#ifdef __cplusplus
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} /* extern "C" */
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#endif
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#endif /* LV2_ATOM_H */
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