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annotate DPF-Prymula-audioplugins/dpf/distrho/src/travesty/edit_controller.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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children
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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 #include "bstream.h"
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21 #include "view.h"
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22
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23 #include "align_push.h"
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24
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25 /**
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26 * component handler
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27 */
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28
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29 enum {
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30 V3_RESTART_RELOAD_COMPONENT = 1 << 0,
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31 V3_RESTART_IO_CHANGED = 1 << 1,
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32 V3_RESTART_PARAM_VALUES_CHANGED = 1 << 2,
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33 V3_RESTART_LATENCY_CHANGED = 1 << 3,
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34 V3_RESTART_PARAM_TITLES_CHANGED = 1 << 4,
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35 V3_RESTART_MIDI_CC_ASSIGNMENT_CHANGED = 1 << 5,
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36 V3_RESTART_NOTE_EXPRESSION_CHANGED = 1 << 6,
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37 V3_RESTART_IO_TITLES_CHANGED = 1 << 7,
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38 V3_RESTART_PREFETCHABLE_SUPPORT_CHANGED = 1 << 8,
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39 V3_RESTART_ROUTING_INFO_CHANGED = 1 << 9
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40 };
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41
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42 struct v3_component_handler {
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43 #ifndef __cplusplus
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44 struct v3_funknown;
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45 #endif
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46 v3_result (V3_API* begin_edit)(void* self, v3_param_id);
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47 v3_result (V3_API* perform_edit)(void* self, v3_param_id, double value_normalised);
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48 v3_result (V3_API* end_edit)(void* self, v3_param_id);
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49 v3_result (V3_API* restart_component)(void* self, int32_t flags);
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50 };
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51
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52 static constexpr const v3_tuid v3_component_handler_iid =
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53 V3_ID(0x93A0BEA3, 0x0BD045DB, 0x8E890B0C, 0xC1E46AC6);
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54
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55 struct v3_component_handler2 {
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56 #ifndef __cplusplus
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57 struct v3_funknown;
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58 #endif
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59 v3_result (V3_API* set_dirty)(void* self, v3_bool state);
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60 v3_result (V3_API* request_open_editor)(void* self, const char* name);
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61 v3_result (V3_API* start_group_edit)(void* self);
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62 v3_result (V3_API* finish_group_edit)(void* self);
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63 };
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64
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65 static constexpr const v3_tuid v3_component_handler2_iid =
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66 V3_ID(0xF040B4B3, 0xA36045EC, 0xABCDC045, 0xB4D5A2CC);
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67
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68 /**
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69 * edit controller
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70 */
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71
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72 enum {
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73 V3_PARAM_CAN_AUTOMATE = 1 << 0,
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74 V3_PARAM_READ_ONLY = 1 << 1,
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75 V3_PARAM_WRAP_AROUND = 1 << 2,
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76 V3_PARAM_IS_LIST = 1 << 3,
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77 V3_PARAM_IS_HIDDEN = 1 << 4,
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78 V3_PARAM_PROGRAM_CHANGE = 1 << 15,
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79 V3_PARAM_IS_BYPASS = 1 << 16
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80 };
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81
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82 struct v3_param_info {
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83 v3_param_id param_id;
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84 v3_str_128 title;
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85 v3_str_128 short_title;
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86 v3_str_128 units;
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87 int32_t step_count;
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88 double default_normalised_value;
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89 int32_t unit_id;
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90 int32_t flags;
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91 };
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92
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93 struct v3_edit_controller {
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94 #ifndef __cplusplus
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95 struct v3_plugin_base;
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96 #endif
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97 v3_result (V3_API* set_component_state)(void* self, struct v3_bstream**);
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98 v3_result (V3_API* set_state)(void* self, struct v3_bstream**);
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99 v3_result (V3_API* get_state)(void* self, struct v3_bstream**);
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100 int32_t (V3_API* get_parameter_count)(void* self);
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101 v3_result (V3_API* get_parameter_info)(void* self, int32_t param_idx, struct v3_param_info*);
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102 v3_result (V3_API* get_parameter_string_for_value)(void* self, v3_param_id, double normalised, v3_str_128 output);
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103 v3_result (V3_API* get_parameter_value_for_string)(void* self, v3_param_id, int16_t* input, double* output);
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104 double (V3_API* normalised_parameter_to_plain)(void* self, v3_param_id, double normalised);
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105 double (V3_API* plain_parameter_to_normalised)(void* self, v3_param_id, double plain);
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106 double (V3_API* get_parameter_normalised)(void* self, v3_param_id);
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107 v3_result (V3_API* set_parameter_normalised)(void* self, v3_param_id, double normalised);
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108 v3_result (V3_API* set_component_handler)(void* self, struct v3_component_handler**);
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109 struct v3_plugin_view** (V3_API* create_view)(void* self, const char* name);
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110 };
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111
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112 static constexpr const v3_tuid v3_edit_controller_iid =
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113 V3_ID(0xDCD7BBE3, 0x7742448D, 0xA874AACC, 0x979C759E);
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114
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115 /**
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116 * midi mapping
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117 */
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118
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119 struct v3_midi_mapping {
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120 #ifndef __cplusplus
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121 struct v3_funknown;
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122 #endif
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123 v3_result (V3_API* get_midi_controller_assignment)(void* self, int32_t bus, int16_t channel, int16_t cc, v3_param_id* id);
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124 };
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125
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126 static constexpr const v3_tuid v3_midi_mapping_iid =
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127 V3_ID(0xDF0FF9F7, 0x49B74669, 0xB63AB732, 0x7ADBF5E5);
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128
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129 #ifdef __cplusplus
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130
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131 /**
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132 * C++ variants
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133 */
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134
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135 struct v3_edit_controller_cpp : v3_funknown {
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136 v3_plugin_base base;
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137 v3_edit_controller ctrl;
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138 };
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139
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140 struct v3_midi_mapping_cpp : v3_funknown {
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141 v3_midi_mapping map;
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142 };
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143
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144 template<> inline
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145 constexpr v3_edit_controller* v3_cpp_obj(v3_edit_controller** obj)
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146 {
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147 /**
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148 * this ugly piece of code is required due to C++ assuming `reinterpret_cast` by default,
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149 * but we need everything to be `static_cast` for it to be `constexpr` compatible.
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150 */
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151 return static_cast<v3_edit_controller*>(
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152 static_cast<void*>(static_cast<uint8_t*>(static_cast<void*>(*obj)) + sizeof(void*)*5));
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153 }
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154
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155 #endif
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156
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157 #include "align_pop.h"