--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/DPF-Prymula-audioplugins/dpf/distrho/src/lv2/control-input-port-change-request.h	Mon Oct 16 21:53:34 2023 +0200
@@ -0,0 +1,84 @@
+/*
+  LV2 ControlInputPort change request extension
+  Copyright 2020 Filipe Coelho <falktx@falktx.com>
+
+  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 control-input-port-change-request.h
+   C header for the LV2 ControlInputPort change request extension <http://kx.studio/ns/lv2ext/control-input-port-change-request>.
+*/
+
+#ifndef LV2_CONTROL_INPUT_PORT_CHANGE_REQUEST_H
+#define LV2_CONTROL_INPUT_PORT_CHANGE_REQUEST_H
+
+#include "lv2.h"
+
+#define LV2_CONTROL_INPUT_PORT_CHANGE_REQUEST_URI    "http://kx.studio/ns/lv2ext/control-input-port-change-request"
+#define LV2_CONTROL_INPUT_PORT_CHANGE_REQUEST_PREFIX LV2_CONTROL_INPUT_PORT_CHANGE_REQUEST_URI "#"
+
+#include <stdint.h>
+
+#ifdef __cplusplus
+extern "C" {
+#else
+#include <stdbool.h>
+#endif
+
+/** A status code for LV2_CONTROL_INPUT_PORT_CHANGE_REQUEST_URI functions. */
+typedef enum {
+	LV2_CONTROL_INPUT_PORT_CHANGE_SUCCESS           = 0,  /**< Completed successfully. */
+	LV2_CONTROL_INPUT_PORT_CHANGE_ERR_UNKNOWN       = 1,  /**< Unknown error. */
+	LV2_CONTROL_INPUT_PORT_CHANGE_ERR_INVALID_INDEX = 2   /**< Failed due to invalid port index. */
+} LV2_ControlInputPort_Change_Status;
+
+/**
+ *  Opaque handle for LV2_CONTROL_INPUT_PORT_CHANGE_REQUEST_URI feature.
+ */
+typedef void* LV2_ControlInputPort_Change_Request_Handle;
+
+/**
+ * On instantiation, host must supply LV2_CONTROL_INPUT_PORT_CHANGE_REQUEST_URI feature.
+ * LV2_Feature::data must be pointer to LV2_ControlInputPort_Change_Request.
+*/
+typedef struct _LV2_ControlInputPort_Change_Request {
+    /**
+     *  Opaque host data.
+     */
+    LV2_ControlInputPort_Change_Request_Handle handle;
+
+    /**
+     * request_change()
+     *
+     * Ask the host to change a plugin's control input port value.
+     * Parameter handle MUST be the 'handle' member of this struct.
+     * Parameter index is port index to change.
+     * Parameter value is the requested value to change the control port input to.
+     *
+     * Returns status of the request.
+     * The host may decline this request, if e.g. it is currently automating this port.
+     *
+     * The plugin MUST call this function during run().
+     */
+    LV2_ControlInputPort_Change_Status (*request_change)(LV2_ControlInputPort_Change_Request_Handle handle,
+                                                         uint32_t index,
+                                                         float value);
+
+} LV2_ControlInputPort_Change_Request;
+
+#ifdef __cplusplus
+} /* extern "C" */
+#endif
+
+#endif /* LV2_CONTROL_INPUT_PORT_CHANGE_REQUEST_H */