/usr/lib/lv2/data-access.lv2/data-access.h is in lv2-dev 1.14.0~dfsg1-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 | /*
LV2 Data Access Extension
Copyright 2008-2016 David Robillard <http://drobilla.net>
Permission to use, copy, modify, and/or distribute this software for any
purpose with or without fee is hereby granted, provided that the above
copyright notice and this permission notice appear in all copies.
THIS SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
/**
@defgroup data-access Data Access
Access to plugin extension_data() for UIs, see
<http://lv2plug.in/ns/ext/data-acess> for details.
@{
*/
#ifndef LV2_DATA_ACCESS_H
#define LV2_DATA_ACCESS_H
#define LV2_DATA_ACCESS_URI "http://lv2plug.in/ns/ext/data-access" ///< http://lv2plug.in/ns/ext/data-access
#define LV2_DATA_ACCESS_PREFIX LV2_DATA_ACCESS_URI "#" ///< http://lv2plug.in/ns/ext/data-access#
#ifdef __cplusplus
extern "C" {
#endif
/**
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/data-access"
and data pointed to an instance of this struct.
*/
typedef struct {
/**
A pointer to a method the UI can call to get data (of a type specified
by some other extension) from the plugin.
This call never is never guaranteed to return anything, UIs should
degrade gracefully if direct access to the plugin data is not possible
(in which case this function will return NULL).
This is for access to large data that can only possibly work if the UI
and plugin are running in the same process. For all other things, use
the normal LV2 UI communication system.
*/
const void* (*data_access)(const char* uri);
} LV2_Extension_Data_Feature;
#ifdef __cplusplus
} /* extern "C" */
#endif
#endif /* LV2_DATA_ACCESS_H */
/**
@}
*/
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