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annotate DPF-Prymula-audioplugins/dpf/distrho/src/lv2/log.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 Copyright 2012-2016 David Robillard <http://drobilla.net>
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3
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4 Permission to use, copy, modify, and/or distribute this software for any
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5 purpose with or without fee is hereby granted, provided that the above
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6 copyright notice and this permission notice appear in all copies.
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7
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8 THIS SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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9 WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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10 MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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11 ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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12 WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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13 ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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14 OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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15 */
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16
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17 /**
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18 @defgroup log Log
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19
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20 Interface for plugins to log via the host; see
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21 <http://lv2plug.in/ns/ext/log> for details.
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22
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23 @{
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24 */
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25
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26 #ifndef LV2_LOG_H
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27 #define LV2_LOG_H
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28
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29 #define LV2_LOG_URI "http://lv2plug.in/ns/ext/log" ///< http://lv2plug.in/ns/ext/log
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30 #define LV2_LOG_PREFIX LV2_LOG_URI "#" ///< http://lv2plug.in/ns/ext/log#
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31
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32 #define LV2_LOG__Entry LV2_LOG_PREFIX "Entry" ///< http://lv2plug.in/ns/ext/log#Entry
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33 #define LV2_LOG__Error LV2_LOG_PREFIX "Error" ///< http://lv2plug.in/ns/ext/log#Error
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34 #define LV2_LOG__Note LV2_LOG_PREFIX "Note" ///< http://lv2plug.in/ns/ext/log#Note
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35 #define LV2_LOG__Trace LV2_LOG_PREFIX "Trace" ///< http://lv2plug.in/ns/ext/log#Trace
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36 #define LV2_LOG__Warning LV2_LOG_PREFIX "Warning" ///< http://lv2plug.in/ns/ext/log#Warning
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37 #define LV2_LOG__log LV2_LOG_PREFIX "log" ///< http://lv2plug.in/ns/ext/log#log
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38
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39 #include <stdarg.h>
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40
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41 #include "urid.h"
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42
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43 #ifdef __cplusplus
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44 extern "C" {
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45 #endif
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46
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47 /** @cond */
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48 #ifdef __GNUC__
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49 /** Allow type checking of printf-like functions. */
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50 # define LV2_LOG_FUNC(fmt, arg1) __attribute__((format(printf, fmt, arg1)))
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51 #else
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52 # define LV2_LOG_FUNC(fmt, arg1)
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53 #endif
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54 /** @endcond */
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55
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56 /**
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57 Opaque data to host data for LV2_Log_Log.
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58 */
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59 typedef void* LV2_Log_Handle;
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60
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61 /**
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62 Log feature (LV2_LOG__log)
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63 */
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64 typedef struct _LV2_Log {
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65 /**
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66 Opaque pointer to host data.
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67
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68 This MUST be passed to methods in this struct whenever they are called.
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69 Otherwise, it must not be interpreted in any way.
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70 */
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71 LV2_Log_Handle handle;
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72
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73 /**
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74 Log a message, passing format parameters directly.
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75
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76 The API of this function matches that of the standard C printf function,
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77 except for the addition of the first two parameters. This function may
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78 be called from any non-realtime context, or from any context if `type`
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79 is @ref LV2_LOG__Trace.
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80 */
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81 LV2_LOG_FUNC(3, 4)
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82 int (*printf)(LV2_Log_Handle handle,
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83 LV2_URID type,
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84 const char* fmt, ...);
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85
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86 /**
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87 Log a message, passing format parameters in a va_list.
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88
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89 The API of this function matches that of the standard C vprintf
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90 function, except for the addition of the first two parameters. This
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91 function may be called from any non-realtime context, or from any
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92 context if `type` is @ref LV2_LOG__Trace.
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93 */
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94 LV2_LOG_FUNC(3, 0)
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95 int (*vprintf)(LV2_Log_Handle handle,
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96 LV2_URID type,
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97 const char* fmt,
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98 va_list ap);
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99 } LV2_Log_Log;
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100
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101 #ifdef __cplusplus
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102 } /* extern "C" */
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103 #endif
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104
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105 #endif /* LV2_LOG_H */
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106
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107 /**
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108 @}
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109 */