source/native-plugins/bypass.c

   1 /*
   2  * Carla Native Plugins
   3  * Copyright (C) 2012-2019 Filipe Coelho <falktx@falktx.com>
   4  *
   5  * This program is free software; you can redistribute it and/or
   6  * modify it under the terms of the GNU General Public License as
   7  * published by the Free Software Foundation; either version 2 of
   8  * the License, or any later version.
   9  *
  10  * This program is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  13  * GNU General Public License for more details.
  14  *
  15  * For a full copy of the GNU General Public License see the doc/GPL.txt file.
  16  */
  17
  18 #include "CarlaNative.h"
  19
  20 #include <string.h>
  21
  22 // -----------------------------------------------------------------------
  23
  24 static NativePluginHandle bypass_instantiate(const NativeHostDescriptor* host)
  25 {
  26     // dummy, return non-NULL
  27     return (NativePluginHandle)0x1;
  28
  29     // unused
  30     (void)host;
  31 }
  32
  33 // FIXME for v3.0, use const for the input buffer
  34 static void bypass_process(NativePluginHandle handle,
  35                            float** inBuffer, float** outBuffer, uint32_t frames,
  36                            const NativeMidiEvent* midiEvents, uint32_t midiEventCount)
  37 {
  38     if (outBuffer[0] != inBuffer[0])
  39         memcpy(outBuffer[0], inBuffer[0], sizeof(float)*frames);
  40     return;
  41
  42     // unused
  43     (void)handle;
  44     (void)midiEvents;
  45     (void)midiEventCount;
  46 }
  47
  48 // -----------------------------------------------------------------------
  49
  50 static const NativePluginDescriptor bypassDesc = {
  51     .category  = NATIVE_PLUGIN_CATEGORY_NONE,
  52     .hints     = NATIVE_PLUGIN_IS_RTSAFE,
  53     .supports  = NATIVE_PLUGIN_SUPPORTS_NOTHING,
  54     .audioIns  = 1,
  55     .audioOuts = 1,
  56     .cvIns     = 0,
  57     .cvOuts    = 0,
  58     .midiIns   = 0,
  59     .midiOuts  = 0,
  60     .paramIns  = 0,
  61     .paramOuts = 0,
  62     .name      = "Bypass",
  63     .label     = "bypass",
  64     .maker     = "falkTX",
  65     .copyright = "GNU GPL v2+",
  66
  67     .instantiate = bypass_instantiate,
  68     .cleanup     = NULL,
  69
  70     .get_parameter_count = NULL,
  71     .get_parameter_info  = NULL,
  72     .get_parameter_value = NULL,
  73
  74     .get_midi_program_count = NULL,
  75     .get_midi_program_info  = NULL,
  76
  77     .set_parameter_value = NULL,
  78     .set_midi_program    = NULL,
  79     .set_custom_data     = NULL,
  80
  81     .ui_show = NULL,
  82     .ui_idle = NULL,
  83
  84     .ui_set_parameter_value = NULL,
  85     .ui_set_midi_program    = NULL,
  86     .ui_set_custom_data     = NULL,
  87
  88     .activate   = NULL,
  89     .deactivate = NULL,
  90     .process    = bypass_process,
  91
  92     .get_state = NULL,
  93     .set_state = NULL,
  94
  95     .dispatcher = NULL
  96 };
  97
  98 // -----------------------------------------------------------------------
  99
 100 void carla_register_native_plugin_bypass(void);
 101
 102 void carla_register_native_plugin_bypass(void)
 103 {
 104     carla_register_native_plugin(&bypassDesc);
 105 }
 106
 107 // -----------------------------------------------------------------------