Rearrange source tree to be directly usable by dependants

This allows the LV2 source distribution to be used as an include path for
compilers and an LV2_PATH for applications, at the expense of self-contained
bundles.  That's a nice idea, but it made LV2 itself weird and annoying to
depend on.  This rearranges things so that directories in the source tree
correspond more closely to installation directories.

To make this possible, the "aux" directory in the documentation output has been
changed to "style", to avoid the reserved name "aux" on Windows.

1 files changed, 149 insertions, 0 deletions

diff --git a/include/lv2/options/options.h b/include/lv2/options/options.h
new file mode 100644
index 0000000..06e5db4
--- /dev/null
+++ b/include/lv2/options/options.h
@@ -0,0 +1,149 @@
+/*
+  Copyright 2012-2016 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.
+*/
+
+#ifndef LV2_OPTIONS_H
+#define LV2_OPTIONS_H
+
+/**
+   @defgroup options Options
+   @ingroup lv2
+
+   Instantiation time options.
+
+   See <http://lv2plug.in/ns/ext/options> for details.
+
+   @{
+*/
+
+#include "lv2/core/lv2.h"
+#include "lv2/urid/urid.h"
+
+#include <stdint.h>
+
+// clang-format off
+
+#define LV2_OPTIONS_URI    "http://lv2plug.in/ns/ext/options"  ///< http://lv2plug.in/ns/ext/options
+#define LV2_OPTIONS_PREFIX LV2_OPTIONS_URI "#"                 ///< http://lv2plug.in/ns/ext/options#
+
+#define LV2_OPTIONS__Option          LV2_OPTIONS_PREFIX "Option"           ///< http://lv2plug.in/ns/ext/options#Option
+#define LV2_OPTIONS__interface       LV2_OPTIONS_PREFIX "interface"        ///< http://lv2plug.in/ns/ext/options#interface
+#define LV2_OPTIONS__options         LV2_OPTIONS_PREFIX "options"          ///< http://lv2plug.in/ns/ext/options#options
+#define LV2_OPTIONS__requiredOption  LV2_OPTIONS_PREFIX "requiredOption"   ///< http://lv2plug.in/ns/ext/options#requiredOption
+#define LV2_OPTIONS__supportedOption LV2_OPTIONS_PREFIX "supportedOption"  ///< http://lv2plug.in/ns/ext/options#supportedOption
+
+// clang-format on
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/**
+   The context of an Option, which defines the subject it applies to.
+*/
+typedef enum {
+  /**
+     This option applies to the instance itself.  The subject must be
+     ignored.
+  */
+  LV2_OPTIONS_INSTANCE,
+
+  /**
+     This option applies to some named resource.  The subject is a URI mapped
+     to an integer (a LV2_URID, like the key)
+  */
+  LV2_OPTIONS_RESOURCE,
+
+  /**
+     This option applies to some blank node.  The subject is a blank node
+     identifier, which is valid only within the current local scope.
+  */
+  LV2_OPTIONS_BLANK,
+
+  /**
+     This option applies to a port on the instance.  The subject is the
+     port's index.
+  */
+  LV2_OPTIONS_PORT
+} LV2_Options_Context;
+
+/**
+   An option.
+
+   This is a property with a subject, also known as a triple or statement.
+
+   This struct is useful anywhere a statement needs to be passed where no
+   memory ownership issues are present (since the value is a const pointer).
+
+   Options can be passed to an instance via the feature LV2_OPTIONS__options
+   with data pointed to an array of options terminated by a zeroed option, or
+   accessed/manipulated using LV2_Options_Interface.
+*/
+typedef struct {
+  LV2_Options_Context context; /**< Context (type of subject). */
+  uint32_t            subject; /**< Subject. */
+  LV2_URID            key;     /**< Key (property). */
+  uint32_t            size;    /**< Size of value in bytes. */
+  LV2_URID            type;    /**< Type of value (datatype). */
+  const void*         value;   /**< Pointer to value (object). */
+} LV2_Options_Option;
+
+/** A status code for option functions. */
+typedef enum {
+  LV2_OPTIONS_SUCCESS         = 0u,       /**< Completed successfully. */
+  LV2_OPTIONS_ERR_UNKNOWN     = 1u,       /**< Unknown error. */
+  LV2_OPTIONS_ERR_BAD_SUBJECT = 1u << 1u, /**< Invalid/unsupported subject. */
+  LV2_OPTIONS_ERR_BAD_KEY     = 1u << 2u, /**< Invalid/unsupported key. */
+  LV2_OPTIONS_ERR_BAD_VALUE   = 1u << 3u  /**< Invalid/unsupported value. */
+} LV2_Options_Status;
+
+/**
+   Interface for dynamically setting options (LV2_OPTIONS__interface).
+*/
+typedef struct {
+  /**
+     Get the given options.
+
+     Each element of the passed options array MUST have type, subject, and
+     key set.  All other fields (size, type, value) MUST be initialised to
+     zero, and are set to the option value if such an option is found.
+
+     This function is in the "instantiation" LV2 threading class, so no other
+     instance functions may be called concurrently.
+
+     @return Bitwise OR of LV2_Options_Status values.
+  */
+  uint32_t (*get)(LV2_Handle instance, LV2_Options_Option* options);
+
+  /**
+     Set the given options.
+
+     This function is in the "instantiation" LV2 threading class, so no other
+     instance functions may be called concurrently.
+
+     @return Bitwise OR of LV2_Options_Status values.
+  */
+  uint32_t (*set)(LV2_Handle instance, const LV2_Options_Option* options);
+} LV2_Options_Interface;
+
+#ifdef __cplusplus
+} /* extern "C" */
+#endif
+
+/**
+   @}
+*/
+
+#endif /* LV2_OPTIONS_H */