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Diffstat (limited to 'ns/ext/reference/reference.h')
| -rw-r--r-- | ns/ext/reference/reference.h | 161 |
1 files changed, 0 insertions, 161 deletions
diff --git a/ns/ext/reference/reference.h b/ns/ext/reference/reference.h deleted file mode 100644 index 26ef4c3..0000000 --- a/ns/ext/reference/reference.h +++ /dev/null @@ -1,161 +0,0 @@ -/* - Copyright 2008-2011 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. -*/ - -/** - @file reference.h C header for the LV2 Reference extension - <http://lv2plug.in/ns/ext/reference>. -*/ - -#ifndef LV2_REFERENCE_H -#define LV2_REFERENCE_H - -#define LV2_REFERENCE_URI "http://lv2plug.in/ns/ext/reference" -#define LV2_REFERENCE_BLOB_SUPPORT_URI LV2_REFERENCE_URI "#blobSupport" - -#include <stdint.h> -#include <stddef.h> - -#include "lv2/lv2plug.in/ns/ext/atom/atom.h" - -/** - Dynamically Allocated Data. - - This is an opaque piece of data of any type, dynamically allocated in memory. - Unlike an "atom", a "blob" is not necessarily POD. Non-POD data is referred - to by a "reference (a special case of atom with type 0). - - This is a pointer to host data which is opaque to the plugin. Plugins MUST - NOT interpret this data in any way, except via host-provided functions in - LV2_Blob_Support. -*/ -typedef void* LV2_Blob; - -typedef LV2_Atom LV2_Reference; - -typedef void* LV2_Blob_Support_Data; - -typedef void (*LV2_Blob_Destroy)(LV2_Blob* blob); - -/** - The data field of the LV2_Feature for reference:blobSupport. - - A host which supports blobs must pass an LV2_Feature to the plugin's - instantiate method with 'URI' = "http://lv2plug.in/ns/ext/reference#blobSupport" - and 'data' pointing to an instance of this struct. All fields of this struct - MUST be set to non-NULL values by the host, except possibly 'data'. -*/ -typedef struct { - - /** - Pointer to opaque host data. - - The plugin MUST pass this to any call to functions in this struct. - Otherwise, the plugin MUST NOT interpret this value in any way. - */ - LV2_Blob_Support_Data data; - - /** - The size of a reference, in bytes. - - This value is provided by the host so plugins can allocate large enough - chunks of memory to store references. Note a reference is an LV2_Reference - with type reference:Reference, hence ref_size is a uint16, like - LV2_Reference.size. - */ - uint16_t ref_size; - - /** - Return the Blob referred to by @a ref. - - The returned value MUST NOT be used in any way other than by calling - methods defined in LV2_Blob_Support (e.g. it MUST NOT be directly - accessed, copied, or destroyed). The actual payload of the blob can - be accessed with LV2_Blob_Support.blob_get. - */ - LV2_Blob (*ref_get)(LV2_Blob_Support_Data data, - LV2_Reference* ref); - - /** - Copy a reference. - This copies a reference but not the blob it refers to, - i.e. after this call @a dst and @a src refer to the same LV2_Blob. - */ - void (*ref_copy)(LV2_Blob_Support_Data data, - LV2_Reference* dst, - LV2_Reference* src); - - /** - Reset (release) a reference. - After this call, @a ref is invalid. Implementations must be sure to - call this function when necessary, or memory leaks will result. The - specific times this is necessary MUST be defined by any extensions that - define a mechanism for transporting references. The standard semantics are: - <ul><li>Whenever passed a Reference (e.g. via a Port) and run, the - plugin owns that reference.</li> - <li>The plugin owns any reference it creates (e.g. by using blob_new or - ref_copy).</li> - <li>For any reference it owns, the plugin MUST either: - <ul><li>Copy the reference and store it (to be used in future runs and - released later).</li> - <li>Copy the reference to an output port exactly once.</li> - <li>Release it with ref_reset.</li></ul></li> - </ul> - */ - void (*ref_reset)(LV2_Blob_Support_Data data, - LV2_Reference* ref); - - /** - Initialize a reference to point to a newly allocated Blob. - - @param data Must be the data member of this struct. - @param ref Pointer to an area of memory at least as large as - the ref_size field of this struct. On return, this will - be the unique reference to the new blob, which is owned by the - caller. Assumed to be uninitialised, i.e. the caller MUST NOT - pass a valid reference since this could cause a memory leak. - @param destroy Function to destroy this blob. This function - MUST clean up any resources contained in the blob, but MUST NOT - attempt to free the memory pointed to by its LV2_Blob* parameter - (since this is allocated by the host). - @param type ID of type of blob to allocate. - @param size Size of blob to allocate in bytes. - */ - void (*blob_new)(LV2_Blob_Support_Data data, - LV2_Reference* ref, - LV2_Blob_Destroy destroy, - uint32_t type, - size_t size); - - /** - Get blob's type as an ID. - - The return value may be any type URI, mapped to an integer with the - URI Map extension with <code>context = NULL</code>. - */ - uint32_t (*blob_type)(LV2_Blob blob); - - /** - Get blob's body. - - Returns a pointer to the start of the blob data. The format of this - data is defined by the return value of the type method. It MUST NOT - be used in any way by code which does not understand that type. - */ - void* (*blob_data)(LV2_Blob blob); - -} LV2_Blob_Support; - -#endif /* LV2_REFERENCE_H */ |