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annotate DPF-Prymula-audioplugins/dpf/distrho/src/lv2/data-access.h @ 3:84e66ea83026

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DPF-Prymula-audioplugins-0.231015-2
author prymula <prymula76@outlook.com>
date Mon, 16 Oct 2023 21:53:34 +0200
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1 /*
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2 LV2 Data Access Extension
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3 Copyright 2008-2016 David Robillard <http://drobilla.net>
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4
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5 Permission to use, copy, modify, and/or distribute this software for any
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6 purpose with or without fee is hereby granted, provided that the above
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7 copyright notice and this permission notice appear in all copies.
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8
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9 THIS SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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10 WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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11 MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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12 ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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13 WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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14 ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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15 OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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16 */
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17
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18 /**
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19 @defgroup data-access Data Access
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20
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21 Access to plugin extension_data() for UIs, see
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22 <http://lv2plug.in/ns/ext/data-acess> for details.
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23
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24 @{
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25 */
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26
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27 #ifndef LV2_DATA_ACCESS_H
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28 #define LV2_DATA_ACCESS_H
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30 #define LV2_DATA_ACCESS_URI "http://lv2plug.in/ns/ext/data-access" ///< http://lv2plug.in/ns/ext/data-access
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31 #define LV2_DATA_ACCESS_PREFIX LV2_DATA_ACCESS_URI "#" ///< http://lv2plug.in/ns/ext/data-access#
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32
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33 #ifdef __cplusplus
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34 extern "C" {
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35 #endif
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36
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37 /**
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38 The data field of the LV2_Feature for this extension.
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39
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40 To support this feature the host must pass an LV2_Feature struct to the
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41 instantiate method with URI "http://lv2plug.in/ns/ext/data-access"
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42 and data pointed to an instance of this struct.
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43 */
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44 typedef struct {
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45 /**
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46 A pointer to a method the UI can call to get data (of a type specified
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47 by some other extension) from the plugin.
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48
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49 This call never is never guaranteed to return anything, UIs should
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50 degrade gracefully if direct access to the plugin data is not possible
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51 (in which case this function will return NULL).
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52
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53 This is for access to large data that can only possibly work if the UI
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54 and plugin are running in the same process. For all other things, use
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55 the normal LV2 UI communication system.
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56 */
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57 const void* (*data_access)(const char* uri);
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58 } LV2_Extension_Data_Feature;
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59
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60 #ifdef __cplusplus
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61 } /* extern "C" */
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62 #endif
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63
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64 #endif /* LV2_DATA_ACCESS_H */
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65
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66 /**
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67 @}
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68 */