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-rw-r--r--ns/ext/files/files.h134
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diff --git a/ns/ext/files/files.h b/ns/ext/files/files.h
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-/*
- Copyright 2010-2011 David Robillard <d@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.
-*/
-
-/**
- @file files.h
- C API for the LV2 Files extension <http://lv2plug.in/ns/ext/files>.
-*/
-
-#ifndef LV2_FILES_H
-#define LV2_FILES_H
-
-#ifdef __cplusplus
-extern "C" {
-#endif
-
-#define LV2_FILES_URI "http://lv2plug.in/ns/ext/files"
-#define LV2_FILES_PATH_SUPPORT_URI LV2_FILES_URI "#pathSupport"
-#define LV2_FILES_NEW_FILE_SUPPORT_URI LV2_FILES_URI "#newFileSupport"
-
-typedef void* LV2_Files_Host_Data;
-
-/**
- files:pathSupport feature struct.
-
- To support this feature, the host MUST pass an LV2_Feature struct with @a
- URI @ref LV2_FILES_PATH_SUPPORT_URI and @a data pointed to an instance of
- this struct.
-*/
-typedef struct {
-
- /**
- Opaque host data.
- */
- LV2_Files_Host_Data host_data;
-
- /**
- Map an absolute path to an abstract path for use in plugin state.
- @param host_data MUST be the @a host_data member of this struct.
- @param absolute_path The absolute path of a file.
- @return An abstract path suitable for use in plugin state.
-
- The plugin MUST use this function to map any paths that will be stored
- in plugin state. The returned value is an abstract path which MAY not
- be an actual file system path; @ref absolute_path MUST be used to map it
- to an actual path in order to use the file.
-
- Hosts MAY map paths in any way (e.g. by creating symbolic links within
- the plugin's state directory or storing a list of referenced files for
- later export). Plugins MUST NOT make any assumptions about abstract
- paths except that they can be mapped to an absolute path using @ref
- absolute_path. Particularly when restoring from state, this absolute
- path MAY not be the same as the original absolute path, but the host
- MUST guarantee it refers to a file with contents equivalent to the
- original.
-
- This function may only be called within the context of
- LV2_Persist.save() or LV2_Persist.restore(). The caller is responsible
- for freeing the returned value.
- */
- char* (*abstract_path)(LV2_Files_Host_Data host_data,
- const char* absolute_path);
-
- /**
- Map an abstract path from plugin state to an absolute path.
- @param host_data MUST be the @a host_data member of this struct.
- @param abstract_path An abstract path (e.g. a path from plugin state).
- @return An absolute file system path.
-
- Since abstract paths are not necessarily actual file paths (or at least
- not necessarily absolute paths), this function MUST be used in order to
- actually open or otherwise use the file referred to by an abstract path.
-
- This function may only be called within the context of
- LV2_Persist.save() or LV2_Persist.restore(). The caller is responsible
- for freeing the returned value.
- */
- char* (*absolute_path)(LV2_Files_Host_Data host_data,
- const char* abstract_path);
-
-} LV2_Files_Path_Support;
-
-/**
- files:newFileSupport feature struct.
-
- To support this feature, the host MUST pass an LV2_Feature struct with @a
- URI @ref LV2_FILES_NEW_FILE_SUPPORT_URI and @a data pointed to an instance
- of this struct.
-*/
-typedef struct {
-
- /**
- Opaque host data.
- */
- LV2_Files_Host_Data host_data;
-
- /**
- Return an absolute path the plugin may use to create a new file.
- @param host_data MUST be the @a host_data member of this struct.
- @param relative_path The relative path of the file.
- @return The absolute path to use for the new file.
-
- The plugin can assume @a relative_path is relative to a namespace
- dedicated to that plugin instance; hosts MUST ensure this, e.g. by
- giving each plugin instance its own state directory. The returned path
- is absolute and thus suitable for creating and using a file, but NOT
- suitable for storing in plugin state (it MUST be mapped to an abstract
- path using @ref LV2_Files_Path_Support::abstract_path to do so).
-
- This function may be called from any non-realtime context. The caller
- is responsible for freeing the returned value.
- */
- char* (*new_file_path)(LV2_Files_Host_Data host_data,
- const char* relative_path);
-
-} LV2_Files_New_File_Support;
-
-#ifdef __cplusplus
-} /* extern "C" */
-#endif
-
-#endif /* LV2_FILES_H */