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Diffstat (limited to 'ext/polymorphic-port.lv2/polymorphic-port.h')
-rw-r--r-- | ext/polymorphic-port.lv2/polymorphic-port.h | 63 |
1 files changed, 63 insertions, 0 deletions
diff --git a/ext/polymorphic-port.lv2/polymorphic-port.h b/ext/polymorphic-port.lv2/polymorphic-port.h new file mode 100644 index 0000000..98d691e --- /dev/null +++ b/ext/polymorphic-port.lv2/polymorphic-port.h @@ -0,0 +1,63 @@ +/* lv2_data_access.h - C header file for the LV2 Data Access extension. + * Copyright (C) 2008-2009 David Robillard <http://drobilla.net> + * + * This header is free software; you can redistribute it and/or modify it + * under the terms of the GNU Lesser General Public License as published + * by the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This header is distributed in the hope that it will be useful, but WITHOUT + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public + * License for more details. + * + * You should have received a copy of the GNU Lesser General Public License + * along with this header; if not, write to the Free Software Foundation, + * Inc., 59 Temple Place, Suite 330, Boston, MA 01222-1307 USA + */ + +/** @file + * C header for the LV2 Polymorphic Port extension + * <http://lv2plug.in/ns/ext/polymorphic-port>. + * + * This extension defines a buffer format for ports that can take on + * various types dynamically at runtime. + */ + +#ifndef LV2_POLYMORPHIC_PORT_H +#define LV2_POLYMORPHIC_PORT_H + +#define LV2_POLYMORPHIC_PORT_URI "http://lv2plug.in/ns/ext/polymorphic-port" + +/** The data field of the LV2_Feature for this extension. + * + * To support this feature the host must pass an LV2_Feature struct to the + * instantiate method with URI "http://lv2plug.in/ns/ext/polymorphic-port" + * and data pointed to an instance of this struct. + */ +typedef struct { + + /** Set the type of a polymorphic port. + * If the plugin specifies constraints on port types, the host MUST NOT + * call the run method until all port types have been set to a valid + * configuration. Whenever the type for a port is changed, the host + * MUST call connect_port before the next call to the run method. + * The return value of this function SHOULD be ignored by hosts at this + * time (future revisions of this extension may specify return values). + * Plugins which do not know of any future revision or extension that + * dictates otherwise MUST return 0 from this function. + * @param port Index of the port to connect (same as LV2 connect_port) + * @param type Mapped URI for the type of data being connected + * @param type_data Type specific data defined by type URI (may be NULL) + * @return Unused at this time + */ + uint32_t (*set_type)(LV2_Handle instance, + uint32_t port, + uint32_t type, + void* type_data); + +} LV2_Polymorphic_Feature; + + +#endif /* LV2_POLYMORPHIC_PORT_H */ + |