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annotate DPF-Prymula-audioplugins/dpf/distrho/src/jackbridge/SDL2Bridge.hpp @ 10:4dc186728822

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immposiblerush-0.230919-2
author prymula <prymula76@outlook.com>
date Sun, 04 Feb 2024 23:27:00 +0100
parents 84e66ea83026
children
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1 /*
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2 * SDL Bridge for DPF
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3 * Copyright (C) 2021-2023 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 #ifndef SDL_BRIDGE_HPP_INCLUDED
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18 #define SDL_BRIDGE_HPP_INCLUDED
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19
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20 #include "NativeBridge.hpp"
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21 #include "../../extra/ScopedDenormalDisable.hpp"
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22
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23 #include <SDL.h>
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24
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25 #ifndef SDL_HINT_AUDIO_DEVICE_APP_NAME
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26 # define SDL_HINT_AUDIO_DEVICE_APP_NAME "SDL_AUDIO_DEVICE_APP_NAME"
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27 #endif
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28
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29 #ifndef SDL_HINT_AUDIO_DEVICE_STREAM_NAME
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30 # define SDL_HINT_AUDIO_DEVICE_STREAM_NAME "SDL_AUDIO_DEVICE_STREAM_NAME"
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31 #endif
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32
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33 #if DISTRHO_PLUGIN_NUM_INPUTS+DISTRHO_PLUGIN_NUM_OUTPUTS == 0
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34 # error SDL without audio does not make sense
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35 #endif
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36
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37 struct SDL2Bridge : NativeBridge {
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38 #if DISTRHO_PLUGIN_NUM_INPUTS > 0
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39 SDL_AudioDeviceID captureDeviceId;
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40 #endif
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41 #if DISTRHO_PLUGIN_NUM_OUTPUTS > 0
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42 SDL_AudioDeviceID playbackDeviceId;
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43 #endif
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44
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45 SDL2Bridge()
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46 : NativeBridge()
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47 #if DISTRHO_PLUGIN_NUM_INPUTS > 0
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48 , captureDeviceId(0)
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49 #endif
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50 #if DISTRHO_PLUGIN_NUM_OUTPUTS > 0
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51 , playbackDeviceId(0)
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52 #endif
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53 {}
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54
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55 bool open(const char* const clientName) override
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56 {
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57 SDL_InitSubSystem(SDL_INIT_AUDIO);
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58
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59 SDL_AudioSpec requested;
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60 std::memset(&requested, 0, sizeof(requested));
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61 requested.format = AUDIO_F32SYS;
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62 requested.freq = 48000;
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63 requested.samples = 512;
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64 requested.userdata = this;
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65
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66 SDL_SetHint(SDL_HINT_AUDIO_DEVICE_APP_NAME, clientName);
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67 // SDL_SetHint(SDL_HINT_AUDIO_RESAMPLING_MODE, "1");
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68
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69 #if DISTRHO_PLUGIN_NUM_INPUTS > 0
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70 SDL_SetHint(SDL_HINT_AUDIO_DEVICE_STREAM_NAME, "Capure");
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71 requested.channels = DISTRHO_PLUGIN_NUM_INPUTS_2;
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72 requested.callback = AudioInputCallback;
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73
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74 SDL_AudioSpec receivedCapture;
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75 captureDeviceId = SDL_OpenAudioDevice(nullptr, 1, &requested, &receivedCapture,
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76 SDL_AUDIO_ALLOW_FREQUENCY_CHANGE|SDL_AUDIO_ALLOW_SAMPLES_CHANGE);
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77 if (captureDeviceId == 0)
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78 {
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79 d_stderr2("Failed to open SDL capture device, error was: %s", SDL_GetError());
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80 #if DISTRHO_PLUGIN_NUM_OUTPUTS == 0
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81 return false;
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82 #endif
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83 }
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84 else if (receivedCapture.channels != DISTRHO_PLUGIN_NUM_INPUTS_2)
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85 {
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86 SDL_CloseAudioDevice(captureDeviceId);
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87 captureDeviceId = 0;
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88 d_stderr2("Invalid or missing audio input channels");
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89 return false;
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90 }
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91 #endif
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92
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93 #if DISTRHO_PLUGIN_NUM_OUTPUTS > 0
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94 SDL_AudioSpec receivedPlayback;
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95 SDL_SetHint(SDL_HINT_AUDIO_DEVICE_STREAM_NAME, "Playback");
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96 requested.channels = DISTRHO_PLUGIN_NUM_OUTPUTS_2;
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97 requested.callback = AudioOutputCallback;
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98
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99 playbackDeviceId = SDL_OpenAudioDevice(nullptr, 0, &requested, &receivedPlayback,
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100 SDL_AUDIO_ALLOW_FREQUENCY_CHANGE|SDL_AUDIO_ALLOW_SAMPLES_CHANGE);
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101 if (playbackDeviceId == 0)
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102 {
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103 d_stderr2("Failed to open SDL playback device, error was: %s", SDL_GetError());
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104 return false;
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105 }
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106
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107 if (receivedPlayback.channels != DISTRHO_PLUGIN_NUM_OUTPUTS_2)
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108 {
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109 SDL_CloseAudioDevice(playbackDeviceId);
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110 playbackDeviceId = 0;
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111 d_stderr2("Invalid or missing audio output channels");
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112 return false;
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113 }
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114 #endif
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115
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116 #if DISTRHO_PLUGIN_NUM_INPUTS > 0 && DISTRHO_PLUGIN_NUM_OUTPUTS > 0
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117 // if using both input and output, make sure they match
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118 if (receivedCapture.samples != receivedPlayback.samples && captureDeviceId != 0)
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prymula <prymula76@outlook.com>
parents:
diff changeset
119 {
84e66ea83026 DPF-Prymula-audioplugins-0.231015-2
prymula <prymula76@outlook.com>
parents:
diff changeset
120 SDL_CloseAudioDevice(captureDeviceId);
84e66ea83026 DPF-Prymula-audioplugins-0.231015-2
prymula <prymula76@outlook.com>
parents:
diff changeset
121 SDL_CloseAudioDevice(playbackDeviceId);
84e66ea83026 DPF-Prymula-audioplugins-0.231015-2
prymula <prymula76@outlook.com>
parents:
diff changeset
122 captureDeviceId = playbackDeviceId = 0;
84e66ea83026 DPF-Prymula-audioplugins-0.231015-2
prymula <prymula76@outlook.com>
parents:
diff changeset
123 d_stderr2("Mismatch buffer size %u vs %u", receivedCapture.samples, receivedPlayback.samples);
84e66ea83026 DPF-Prymula-audioplugins-0.231015-2
prymula <prymula76@outlook.com>
parents:
diff changeset
124 return false;
84e66ea83026 DPF-Prymula-audioplugins-0.231015-2
prymula <prymula76@outlook.com>
parents:
diff changeset
125 }
84e66ea83026 DPF-Prymula-audioplugins-0.231015-2
prymula <prymula76@outlook.com>
parents:
diff changeset
126 if (receivedCapture.freq != receivedPlayback.freq && captureDeviceId != 0)
84e66ea83026 DPF-Prymula-audioplugins-0.231015-2
prymula <prymula76@outlook.com>
parents:
diff changeset
127 {
84e66ea83026 DPF-Prymula-audioplugins-0.231015-2
prymula <prymula76@outlook.com>
parents:
diff changeset
128 SDL_CloseAudioDevice(captureDeviceId);
84e66ea83026 DPF-Prymula-audioplugins-0.231015-2
prymula <prymula76@outlook.com>
parents:
diff changeset
129 SDL_CloseAudioDevice(playbackDeviceId);
84e66ea83026 DPF-Prymula-audioplugins-0.231015-2
prymula <prymula76@outlook.com>
parents:
diff changeset
130 captureDeviceId = playbackDeviceId = 0;
84e66ea83026 DPF-Prymula-audioplugins-0.231015-2
prymula <prymula76@outlook.com>
parents:
diff changeset
131 d_stderr2("Mismatch sample rate %u vs %u", receivedCapture.freq, receivedPlayback.freq);
84e66ea83026 DPF-Prymula-audioplugins-0.231015-2
prymula <prymula76@outlook.com>
parents:
diff changeset
132 return false;
84e66ea83026 DPF-Prymula-audioplugins-0.231015-2
prymula <prymula76@outlook.com>
parents:
diff changeset
133 }
84e66ea83026 DPF-Prymula-audioplugins-0.231015-2
prymula <prymula76@outlook.com>
parents:
diff changeset
134 #endif
84e66ea83026 DPF-Prymula-audioplugins-0.231015-2
prymula <prymula76@outlook.com>
parents:
diff changeset
135
84e66ea83026 DPF-Prymula-audioplugins-0.231015-2
prymula <prymula76@outlook.com>
parents:
diff changeset
136 #if DISTRHO_PLUGIN_NUM_INPUTS > 0
84e66ea83026 DPF-Prymula-audioplugins-0.231015-2
prymula <prymula76@outlook.com>
parents:
diff changeset
137 if (captureDeviceId != 0)
84e66ea83026 DPF-Prymula-audioplugins-0.231015-2
prymula <prymula76@outlook.com>
parents:
diff changeset
138 {
84e66ea83026 DPF-Prymula-audioplugins-0.231015-2
prymula <prymula76@outlook.com>
parents:
diff changeset
139 bufferSize = receivedCapture.samples;
84e66ea83026 DPF-Prymula-audioplugins-0.231015-2
prymula <prymula76@outlook.com>
parents:
diff changeset
140 sampleRate = receivedCapture.freq;
84e66ea83026 DPF-Prymula-audioplugins-0.231015-2
prymula <prymula76@outlook.com>
parents:
diff changeset
141 }
84e66ea83026 DPF-Prymula-audioplugins-0.231015-2
prymula <prymula76@outlook.com>
parents:
diff changeset
142 #endif
84e66ea83026 DPF-Prymula-audioplugins-0.231015-2
prymula <prymula76@outlook.com>
parents:
diff changeset
143 #if DISTRHO_PLUGIN_NUM_INPUTS > 0 && DISTRHO_PLUGIN_NUM_OUTPUTS > 0
84e66ea83026 DPF-Prymula-audioplugins-0.231015-2
prymula <prymula76@outlook.com>
parents:
diff changeset
144 else
84e66ea83026 DPF-Prymula-audioplugins-0.231015-2
prymula <prymula76@outlook.com>
parents:
diff changeset
145 #endif
84e66ea83026 DPF-Prymula-audioplugins-0.231015-2
prymula <prymula76@outlook.com>
parents:
diff changeset
146 #if DISTRHO_PLUGIN_NUM_OUTPUTS > 0
84e66ea83026 DPF-Prymula-audioplugins-0.231015-2
prymula <prymula76@outlook.com>
parents:
diff changeset
147 {
84e66ea83026 DPF-Prymula-audioplugins-0.231015-2
prymula <prymula76@outlook.com>
parents:
diff changeset
148 bufferSize = receivedPlayback.samples;
84e66ea83026 DPF-Prymula-audioplugins-0.231015-2
prymula <prymula76@outlook.com>
parents:
diff changeset
149 sampleRate = receivedPlayback.freq;
84e66ea83026 DPF-Prymula-audioplugins-0.231015-2
prymula <prymula76@outlook.com>
parents:
diff changeset
150 }
84e66ea83026 DPF-Prymula-audioplugins-0.231015-2
prymula <prymula76@outlook.com>
parents:
diff changeset
151 #endif
84e66ea83026 DPF-Prymula-audioplugins-0.231015-2
prymula <prymula76@outlook.com>
parents:
diff changeset
152
84e66ea83026 DPF-Prymula-audioplugins-0.231015-2
prymula <prymula76@outlook.com>
parents:
diff changeset
153 allocBuffers(true, false);
84e66ea83026 DPF-Prymula-audioplugins-0.231015-2
prymula <prymula76@outlook.com>
parents:
diff changeset
154 return true;
84e66ea83026 DPF-Prymula-audioplugins-0.231015-2
prymula <prymula76@outlook.com>
parents:
diff changeset
155 }
84e66ea83026 DPF-Prymula-audioplugins-0.231015-2
prymula <prymula76@outlook.com>
parents:
diff changeset
156
84e66ea83026 DPF-Prymula-audioplugins-0.231015-2
prymula <prymula76@outlook.com>
parents:
diff changeset
157 bool close() override
84e66ea83026 DPF-Prymula-audioplugins-0.231015-2
prymula <prymula76@outlook.com>
parents:
diff changeset
158 {
84e66ea83026 DPF-Prymula-audioplugins-0.231015-2
prymula <prymula76@outlook.com>
parents:
diff changeset
159 #if DISTRHO_PLUGIN_NUM_INPUTS > 0
84e66ea83026 DPF-Prymula-audioplugins-0.231015-2
prymula <prymula76@outlook.com>
parents:
diff changeset
160 if (captureDeviceId != 0)
84e66ea83026 DPF-Prymula-audioplugins-0.231015-2
prymula <prymula76@outlook.com>
parents:
diff changeset
161 {
84e66ea83026 DPF-Prymula-audioplugins-0.231015-2
prymula <prymula76@outlook.com>
parents:
diff changeset
162 SDL_CloseAudioDevice(captureDeviceId);
84e66ea83026 DPF-Prymula-audioplugins-0.231015-2
prymula <prymula76@outlook.com>
parents:
diff changeset
163 captureDeviceId = 0;
84e66ea83026 DPF-Prymula-audioplugins-0.231015-2
prymula <prymula76@outlook.com>
parents:
diff changeset
164 }
84e66ea83026 DPF-Prymula-audioplugins-0.231015-2
prymula <prymula76@outlook.com>
parents:
diff changeset
165 #endif
84e66ea83026 DPF-Prymula-audioplugins-0.231015-2
prymula <prymula76@outlook.com>
parents:
diff changeset
166 #if DISTRHO_PLUGIN_NUM_OUTPUTS > 0
84e66ea83026 DPF-Prymula-audioplugins-0.231015-2
prymula <prymula76@outlook.com>
parents:
diff changeset
167 DISTRHO_SAFE_ASSERT_RETURN(playbackDeviceId != 0, false);
84e66ea83026 DPF-Prymula-audioplugins-0.231015-2
prymula <prymula76@outlook.com>
parents:
diff changeset
168 SDL_CloseAudioDevice(playbackDeviceId);
84e66ea83026 DPF-Prymula-audioplugins-0.231015-2
prymula <prymula76@outlook.com>
parents:
diff changeset
169 playbackDeviceId = 0;
84e66ea83026 DPF-Prymula-audioplugins-0.231015-2
prymula <prymula76@outlook.com>
parents:
diff changeset
170 #endif
84e66ea83026 DPF-Prymula-audioplugins-0.231015-2
prymula <prymula76@outlook.com>
parents:
diff changeset
171
84e66ea83026 DPF-Prymula-audioplugins-0.231015-2
prymula <prymula76@outlook.com>
parents:
diff changeset
172 freeBuffers();
84e66ea83026 DPF-Prymula-audioplugins-0.231015-2
prymula <prymula76@outlook.com>
parents:
diff changeset
173 return true;
84e66ea83026 DPF-Prymula-audioplugins-0.231015-2
prymula <prymula76@outlook.com>
parents:
diff changeset
174 }
84e66ea83026 DPF-Prymula-audioplugins-0.231015-2
prymula <prymula76@outlook.com>
parents:
diff changeset
175
84e66ea83026 DPF-Prymula-audioplugins-0.231015-2
prymula <prymula76@outlook.com>
parents:
diff changeset
176 bool activate() override
84e66ea83026 DPF-Prymula-audioplugins-0.231015-2
prymula <prymula76@outlook.com>
parents:
diff changeset
177 {
84e66ea83026 DPF-Prymula-audioplugins-0.231015-2
prymula <prymula76@outlook.com>
parents:
diff changeset
178 #if DISTRHO_PLUGIN_NUM_INPUTS > 0
84e66ea83026 DPF-Prymula-audioplugins-0.231015-2
prymula <prymula76@outlook.com>
parents:
diff changeset
179 if (captureDeviceId != 0)
84e66ea83026 DPF-Prymula-audioplugins-0.231015-2
prymula <prymula76@outlook.com>
parents:
diff changeset
180 SDL_PauseAudioDevice(captureDeviceId, 0);
84e66ea83026 DPF-Prymula-audioplugins-0.231015-2
prymula <prymula76@outlook.com>
parents:
diff changeset
181 #endif
84e66ea83026 DPF-Prymula-audioplugins-0.231015-2
prymula <prymula76@outlook.com>
parents:
diff changeset
182 #if DISTRHO_PLUGIN_NUM_OUTPUTS > 0
84e66ea83026 DPF-Prymula-audioplugins-0.231015-2
prymula <prymula76@outlook.com>
parents:
diff changeset
183 DISTRHO_SAFE_ASSERT_RETURN(playbackDeviceId != 0, false);
84e66ea83026 DPF-Prymula-audioplugins-0.231015-2
prymula <prymula76@outlook.com>
parents:
diff changeset
184 SDL_PauseAudioDevice(playbackDeviceId, 0);
84e66ea83026 DPF-Prymula-audioplugins-0.231015-2
prymula <prymula76@outlook.com>
parents:
diff changeset
185 #endif
84e66ea83026 DPF-Prymula-audioplugins-0.231015-2
prymula <prymula76@outlook.com>
parents:
diff changeset
186 return true;
84e66ea83026 DPF-Prymula-audioplugins-0.231015-2
prymula <prymula76@outlook.com>
parents:
diff changeset
187 }
84e66ea83026 DPF-Prymula-audioplugins-0.231015-2
prymula <prymula76@outlook.com>
parents:
diff changeset
188
84e66ea83026 DPF-Prymula-audioplugins-0.231015-2
prymula <prymula76@outlook.com>
parents:
diff changeset
189 bool deactivate() override
84e66ea83026 DPF-Prymula-audioplugins-0.231015-2
prymula <prymula76@outlook.com>
parents:
diff changeset
190 {
84e66ea83026 DPF-Prymula-audioplugins-0.231015-2
prymula <prymula76@outlook.com>
parents:
diff changeset
191 #if DISTRHO_PLUGIN_NUM_INPUTS > 0
84e66ea83026 DPF-Prymula-audioplugins-0.231015-2
prymula <prymula76@outlook.com>
parents:
diff changeset
192 if (captureDeviceId != 0)
84e66ea83026 DPF-Prymula-audioplugins-0.231015-2
prymula <prymula76@outlook.com>
parents:
diff changeset
193 SDL_PauseAudioDevice(captureDeviceId, 1);
84e66ea83026 DPF-Prymula-audioplugins-0.231015-2
prymula <prymula76@outlook.com>
parents:
diff changeset
194 #endif
84e66ea83026 DPF-Prymula-audioplugins-0.231015-2
prymula <prymula76@outlook.com>
parents:
diff changeset
195 #if DISTRHO_PLUGIN_NUM_OUTPUTS > 0
84e66ea83026 DPF-Prymula-audioplugins-0.231015-2
prymula <prymula76@outlook.com>
parents:
diff changeset
196 DISTRHO_SAFE_ASSERT_RETURN(playbackDeviceId != 0, false);
84e66ea83026 DPF-Prymula-audioplugins-0.231015-2
prymula <prymula76@outlook.com>
parents:
diff changeset
197 SDL_PauseAudioDevice(playbackDeviceId, 1);
84e66ea83026 DPF-Prymula-audioplugins-0.231015-2
prymula <prymula76@outlook.com>
parents:
diff changeset
198 #endif
84e66ea83026 DPF-Prymula-audioplugins-0.231015-2
prymula <prymula76@outlook.com>
parents:
diff changeset
199 return true;
84e66ea83026 DPF-Prymula-audioplugins-0.231015-2
prymula <prymula76@outlook.com>
parents:
diff changeset
200 }
84e66ea83026 DPF-Prymula-audioplugins-0.231015-2
prymula <prymula76@outlook.com>
parents:
diff changeset
201
84e66ea83026 DPF-Prymula-audioplugins-0.231015-2
prymula <prymula76@outlook.com>
parents:
diff changeset
202 #if DISTRHO_PLUGIN_NUM_INPUTS > 0
84e66ea83026 DPF-Prymula-audioplugins-0.231015-2
prymula <prymula76@outlook.com>
parents:
diff changeset
203 static void AudioInputCallback(void* const userData, uchar* const stream, const int len)
84e66ea83026 DPF-Prymula-audioplugins-0.231015-2
prymula <prymula76@outlook.com>
parents:
diff changeset
204 {
84e66ea83026 DPF-Prymula-audioplugins-0.231015-2
prymula <prymula76@outlook.com>
parents:
diff changeset
205 NativeBridge* const self = static_cast<NativeBridge*>(userData);
84e66ea83026 DPF-Prymula-audioplugins-0.231015-2
prymula <prymula76@outlook.com>
parents:
diff changeset
206
84e66ea83026 DPF-Prymula-audioplugins-0.231015-2
prymula <prymula76@outlook.com>
parents:
diff changeset
207 // safety checks
84e66ea83026 DPF-Prymula-audioplugins-0.231015-2
prymula <prymula76@outlook.com>
parents:
diff changeset
208 DISTRHO_SAFE_ASSERT_RETURN(stream != nullptr,);
84e66ea83026 DPF-Prymula-audioplugins-0.231015-2
prymula <prymula76@outlook.com>
parents:
diff changeset
209 DISTRHO_SAFE_ASSERT_RETURN(len > 0,);
84e66ea83026 DPF-Prymula-audioplugins-0.231015-2
prymula <prymula76@outlook.com>
parents:
diff changeset
210
84e66ea83026 DPF-Prymula-audioplugins-0.231015-2
prymula <prymula76@outlook.com>
parents:
diff changeset
211 if (self->jackProcessCallback == nullptr)
84e66ea83026 DPF-Prymula-audioplugins-0.231015-2
prymula <prymula76@outlook.com>
parents:
diff changeset
212 return;
84e66ea83026 DPF-Prymula-audioplugins-0.231015-2
prymula <prymula76@outlook.com>
parents:
diff changeset
213
84e66ea83026 DPF-Prymula-audioplugins-0.231015-2
prymula <prymula76@outlook.com>
parents:
diff changeset
214 const uint numFrames = static_cast<uint>(len / sizeof(float) / DISTRHO_PLUGIN_NUM_INPUTS_2);
84e66ea83026 DPF-Prymula-audioplugins-0.231015-2
prymula <prymula76@outlook.com>
parents:
diff changeset
215 DISTRHO_SAFE_ASSERT_UINT2_RETURN(numFrames == self->bufferSize, numFrames, self->bufferSize,);
84e66ea83026 DPF-Prymula-audioplugins-0.231015-2
prymula <prymula76@outlook.com>
parents:
diff changeset
216
84e66ea83026 DPF-Prymula-audioplugins-0.231015-2
prymula <prymula76@outlook.com>
parents:
diff changeset
217 const float* const fstream = (const float*)stream;
84e66ea83026 DPF-Prymula-audioplugins-0.231015-2
prymula <prymula76@outlook.com>
parents:
diff changeset
218
84e66ea83026 DPF-Prymula-audioplugins-0.231015-2
prymula <prymula76@outlook.com>
parents:
diff changeset
219 for (uint i=0; i<DISTRHO_PLUGIN_NUM_INPUTS_2; ++i)
84e66ea83026 DPF-Prymula-audioplugins-0.231015-2
prymula <prymula76@outlook.com>
parents:
diff changeset
220 {
84e66ea83026 DPF-Prymula-audioplugins-0.231015-2
prymula <prymula76@outlook.com>
parents:
diff changeset
221 for (uint j=0; j<numFrames; ++j)
84e66ea83026 DPF-Prymula-audioplugins-0.231015-2
prymula <prymula76@outlook.com>
parents:
diff changeset
222 self->audioBuffers[i][j] = fstream[j * DISTRHO_PLUGIN_NUM_INPUTS_2 + i];
84e66ea83026 DPF-Prymula-audioplugins-0.231015-2
prymula <prymula76@outlook.com>
parents:
diff changeset
223 }
84e66ea83026 DPF-Prymula-audioplugins-0.231015-2
prymula <prymula76@outlook.com>
parents:
diff changeset
224
84e66ea83026 DPF-Prymula-audioplugins-0.231015-2
prymula <prymula76@outlook.com>
parents:
diff changeset
225 #if DISTRHO_PLUGIN_NUM_OUTPUTS == 0
84e66ea83026 DPF-Prymula-audioplugins-0.231015-2
prymula <prymula76@outlook.com>
parents:
diff changeset
226 // if there are no outputs, run process callback now
84e66ea83026 DPF-Prymula-audioplugins-0.231015-2
prymula <prymula76@outlook.com>
parents:
diff changeset
227 const ScopedDenormalDisable sdd;
84e66ea83026 DPF-Prymula-audioplugins-0.231015-2
prymula <prymula76@outlook.com>
parents:
diff changeset
228 self->jackProcessCallback(numFrames, self->jackProcessArg);
84e66ea83026 DPF-Prymula-audioplugins-0.231015-2
prymula <prymula76@outlook.com>
parents:
diff changeset
229 #endif
84e66ea83026 DPF-Prymula-audioplugins-0.231015-2
prymula <prymula76@outlook.com>
parents:
diff changeset
230 }
84e66ea83026 DPF-Prymula-audioplugins-0.231015-2
prymula <prymula76@outlook.com>
parents:
diff changeset
231 #endif
84e66ea83026 DPF-Prymula-audioplugins-0.231015-2
prymula <prymula76@outlook.com>
parents:
diff changeset
232
84e66ea83026 DPF-Prymula-audioplugins-0.231015-2
prymula <prymula76@outlook.com>
parents:
diff changeset
233 #if DISTRHO_PLUGIN_NUM_OUTPUTS > 0
84e66ea83026 DPF-Prymula-audioplugins-0.231015-2
prymula <prymula76@outlook.com>
parents:
diff changeset
234 static void AudioOutputCallback(void* const userData, uchar* const stream, const int len)
84e66ea83026 DPF-Prymula-audioplugins-0.231015-2
prymula <prymula76@outlook.com>
parents:
diff changeset
235 {
84e66ea83026 DPF-Prymula-audioplugins-0.231015-2
prymula <prymula76@outlook.com>
parents:
diff changeset
236 NativeBridge* const self = static_cast<NativeBridge*>(userData);
84e66ea83026 DPF-Prymula-audioplugins-0.231015-2
prymula <prymula76@outlook.com>
parents:
diff changeset
237
84e66ea83026 DPF-Prymula-audioplugins-0.231015-2
prymula <prymula76@outlook.com>
parents:
diff changeset
238 // safety checks
84e66ea83026 DPF-Prymula-audioplugins-0.231015-2
prymula <prymula76@outlook.com>
parents:
diff changeset
239 DISTRHO_SAFE_ASSERT_RETURN(stream != nullptr,);
84e66ea83026 DPF-Prymula-audioplugins-0.231015-2
prymula <prymula76@outlook.com>
parents:
diff changeset
240 DISTRHO_SAFE_ASSERT_RETURN(len > 0,);
84e66ea83026 DPF-Prymula-audioplugins-0.231015-2
prymula <prymula76@outlook.com>
parents:
diff changeset
241
84e66ea83026 DPF-Prymula-audioplugins-0.231015-2
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242 if (self->jackProcessCallback == nullptr)
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243 {
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244 std::memset(stream, 0, len);
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245 return;
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246 }
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247
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248 const uint numFrames = static_cast<uint>(len / sizeof(float) / DISTRHO_PLUGIN_NUM_OUTPUTS_2);
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249 DISTRHO_SAFE_ASSERT_UINT2_RETURN(numFrames == self->bufferSize, numFrames, self->bufferSize,);
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250
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251 const ScopedDenormalDisable sdd;
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252 self->jackProcessCallback(numFrames, self->jackProcessArg);
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253
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254 float* const fstream = (float*)stream;
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255
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256 for (uint i=0; i < DISTRHO_PLUGIN_NUM_OUTPUTS_2; ++i)
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257 {
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258 for (uint j=0; j < numFrames; ++j)
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259 fstream[j * DISTRHO_PLUGIN_NUM_OUTPUTS_2 + i] = self->audioBuffers[DISTRHO_PLUGIN_NUM_INPUTS + i][j];
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260 }
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261 }
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prymula <prymula76@outlook.com>
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262 #endif
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prymula <prymula76@outlook.com>
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263 };
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prymula <prymula76@outlook.com>
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264
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prymula <prymula76@outlook.com>
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265 #endif // SDL_BRIDGE_HPP_INCLUDED