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annotate DPF-Prymula-audioplugins/dpf/distrho/src/travesty/factory.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 * travesty, pure C VST3-compatible interface
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3 * Copyright (C) 2021-2022 Filipe Coelho <falktx@falktx.com>
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4 *
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5 * Permission to use, copy, modify, and/or distribute this software for any purpose with
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6 * or without fee is hereby granted, provided that the above copyright notice and this
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7 * permission notice appear in all copies.
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8 *
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9 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES WITH REGARD
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10 * TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS. IN
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11 * NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL
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12 * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER
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13 * IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
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14 * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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15 */
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16
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17 #pragma once
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18
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19 #include "base.h"
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20
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21 /**
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22 * plugin factory v1
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23 */
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24
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25 struct v3_factory_info {
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26 char vendor[64];
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27 char url[256];
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28 char email[128];
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29 int32_t flags; // set to 0x10 (unicode)
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30 };
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31
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32 struct v3_class_info {
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33 v3_tuid class_id;
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34 int32_t cardinality; // set to 0x7FFFFFFF (many instances)
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35 char category[32];
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36 char name[64];
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37 };
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38
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39 struct v3_plugin_factory {
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40 #ifndef __cplusplus
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41 struct v3_funknown;
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42 #endif
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43 v3_result (V3_API *get_factory_info)(void* self, struct v3_factory_info*);
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44 int32_t (V3_API *num_classes)(void* self);
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45 v3_result (V3_API *get_class_info)(void* self, int32_t idx, struct v3_class_info*);
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46 v3_result (V3_API *create_instance)(void* self, const v3_tuid class_id, const v3_tuid iid, void** instance);
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47 };
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48
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49 static constexpr const v3_tuid v3_plugin_factory_iid =
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50 V3_ID(0x7A4D811C, 0x52114A1F, 0xAED9D2EE, 0x0B43BF9F);
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51
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52 /**
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53 * plugin factory v2
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54 */
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55
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56 enum {
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57 V3_DISTRIBUTABLE = 1 << 0,
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58 V3_SIMPLE_MODE = 1 << 1
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59 };
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60
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61 struct v3_class_info_2 {
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62 v3_tuid class_id;
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63 int32_t cardinality; // set to 0x7FFFFFFF
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64 char category[32];
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65 char name[64];
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66 uint32_t class_flags;
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67 char sub_categories[128];
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68 char vendor[64];
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69 char version[64];
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70 char sdk_version[64];
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71 };
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72
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73 struct v3_plugin_factory_2 {
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74 #ifndef __cplusplus
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75 struct v3_plugin_factory;
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76 #endif
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77 v3_result (V3_API *get_class_info_2)(void* self, int32_t idx, struct v3_class_info_2*);
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78 };
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79
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80 static constexpr const v3_tuid v3_plugin_factory_2_iid =
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81 V3_ID(0x0007B650, 0xF24B4C0B, 0xA464EDB9, 0xF00B2ABB);
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82
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83 /**
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84 * plugin factory v3
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85 * (we got it right this time I swear)
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86 *
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87 * same as above, but "unicode" (really just utf-16, thanks microsoft!)
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88 */
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89
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90 struct v3_class_info_3 {
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91 v3_tuid class_id;
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92 int32_t cardinality; // set to 0x7FFFFFFF
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93 char category[32];
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94 int16_t name[64];
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95 uint32_t class_flags;
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96 char sub_categories[128];
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97 int16_t vendor[64];
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98 int16_t version[64];
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99 int16_t sdk_version[64];
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100 };
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101
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102 struct v3_plugin_factory_3 {
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103 #ifndef __cplusplus
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104 struct v3_plugin_factory_2;
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105 #endif
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106 v3_result (V3_API *get_class_info_utf16)(void* self, int32_t idx, struct v3_class_info_3*);
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107 v3_result (V3_API *set_host_context)(void* self, struct v3_funknown** host);
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108 };
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109
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110 static constexpr const v3_tuid v3_plugin_factory_3_iid =
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111 V3_ID(0x4555A2AB, 0xC1234E57, 0x9B122910, 0x36878931);
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112
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113 #ifdef __cplusplus
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114
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115 /**
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116 * C++ variants
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117 */
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118
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119 struct v3_plugin_factory_cpp : v3_funknown {
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120 v3_plugin_factory v1;
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121 v3_plugin_factory_2 v2;
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122 v3_plugin_factory_3 v3;
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123 };
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124
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125 template<> inline
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126 constexpr v3_plugin_factory_2* v3_cpp_obj(v3_plugin_factory_2** obj)
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127 {
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128 /**
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129 * this ugly piece of code is required due to C++ assuming `reinterpret_cast` by default,
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130 * but we need everything to be `static_cast` for it to be `constexpr` compatible.
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131 */
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132 return static_cast<v3_plugin_factory_2*>(
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133 static_cast<void*>(static_cast<uint8_t*>(static_cast<void*>(*obj)) + sizeof(void*)*7));
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134 }
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135
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136 template<> inline
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137 constexpr v3_plugin_factory_3* v3_cpp_obj(v3_plugin_factory_3** obj)
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138 {
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139 /**
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140 * this ugly piece of code is required due to C++ assuming `reinterpret_cast` by default,
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141 * but we need everything to be `static_cast` for it to be `constexpr` compatible.
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142 */
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143 return static_cast<v3_plugin_factory_3*>(
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144 static_cast<void*>(static_cast<uint8_t*>(static_cast<void*>(*obj)) + sizeof(void*)*8));
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145 }
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146
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147 #endif