/* * Carla Native Plugin API * Copyright (C) 2012-2019 Filipe Coelho * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public License as * published by the Free Software Foundation; either version 2 of * the License, or any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * For a full copy of the GNU General Public License see the doc/GPL.txt file. */ #ifndef CARLA_NATIVE_H_INCLUDED #define CARLA_NATIVE_H_INCLUDED #ifdef __cplusplus extern "C" { #endif #include #include #include /*! * @defgroup CarlaNativeAPI Carla Native API * * The Carla Native API * @{ */ typedef void* NativeHostHandle; typedef void* NativePluginHandle; /* ------------------------------------------------------------------------------------------------------------ * enums */ typedef enum { NATIVE_PLUGIN_CATEGORY_NONE = 0, /** Null plugin category. */ NATIVE_PLUGIN_CATEGORY_SYNTH = 1, /** A synthesizer or generator. */ NATIVE_PLUGIN_CATEGORY_DELAY = 2, /** A delay or reverberator. */ NATIVE_PLUGIN_CATEGORY_EQ = 3, /** An equalizer. */ NATIVE_PLUGIN_CATEGORY_FILTER = 4, /** A filter. */ NATIVE_PLUGIN_CATEGORY_DISTORTION = 5, /** A distortion plugin. */ NATIVE_PLUGIN_CATEGORY_DYNAMICS = 6, /** A 'dynamic' plugin (amplifier, compressor, gate, etc). */ NATIVE_PLUGIN_CATEGORY_MODULATOR = 7, /** A 'modulator' plugin (chorus, flanger, phaser, etc). */ NATIVE_PLUGIN_CATEGORY_UTILITY = 8, /** An 'utility' plugin (analyzer, converter, mixer, etc). */ NATIVE_PLUGIN_CATEGORY_OTHER = 9 /** Misc plugin (used to check if the plugin has a category). */ } NativePluginCategory; typedef enum { NATIVE_PLUGIN_IS_RTSAFE = 1 << 0, NATIVE_PLUGIN_IS_SYNTH = 1 << 1, NATIVE_PLUGIN_HAS_UI = 1 << 2, NATIVE_PLUGIN_NEEDS_FIXED_BUFFERS = 1 << 3, NATIVE_PLUGIN_NEEDS_UI_MAIN_THREAD = 1 << 4, NATIVE_PLUGIN_NEEDS_UI_OPEN_SAVE = 1 << 6, NATIVE_PLUGIN_USES_MULTI_PROGS = 1 << 7, /** has 1 program per midi channel */ NATIVE_PLUGIN_USES_PANNING = 1 << 8, /** uses stereo balance if unset (default) */ NATIVE_PLUGIN_USES_STATE = 1 << 9, NATIVE_PLUGIN_USES_TIME = 1 << 10, NATIVE_PLUGIN_USES_PARENT_ID = 1 << 11, /** can set transient hint to parent */ NATIVE_PLUGIN_HAS_INLINE_DISPLAY = 1 << 12, NATIVE_PLUGIN_USES_CONTROL_VOLTAGE = 1 << 13 } NativePluginHints; typedef enum { NATIVE_PLUGIN_SUPPORTS_NOTHING = 0, NATIVE_PLUGIN_SUPPORTS_PROGRAM_CHANGES = 1 << 0, /** handles MIDI programs internally instead of host-exposed/exported */ NATIVE_PLUGIN_SUPPORTS_CONTROL_CHANGES = 1 << 1, NATIVE_PLUGIN_SUPPORTS_CHANNEL_PRESSURE = 1 << 2, NATIVE_PLUGIN_SUPPORTS_NOTE_AFTERTOUCH = 1 << 3, NATIVE_PLUGIN_SUPPORTS_PITCHBEND = 1 << 4, NATIVE_PLUGIN_SUPPORTS_ALL_SOUND_OFF = 1 << 5, NATIVE_PLUGIN_SUPPORTS_EVERYTHING = (1 << 6)-1 } NativePluginSupports; typedef enum { NATIVE_PARAMETER_IS_OUTPUT = 1 << 0, NATIVE_PARAMETER_IS_ENABLED = 1 << 1, NATIVE_PARAMETER_IS_AUTOMABLE = 1 << 2, NATIVE_PARAMETER_IS_BOOLEAN = 1 << 3, NATIVE_PARAMETER_IS_INTEGER = 1 << 4, NATIVE_PARAMETER_IS_LOGARITHMIC = 1 << 5, NATIVE_PARAMETER_USES_SAMPLE_RATE = 1 << 6, NATIVE_PARAMETER_USES_SCALEPOINTS = 1 << 7 } NativeParameterHints; typedef enum { NATIVE_PLUGIN_OPCODE_NULL = 0, /** nothing */ NATIVE_PLUGIN_OPCODE_BUFFER_SIZE_CHANGED = 1, /** uses value */ NATIVE_PLUGIN_OPCODE_SAMPLE_RATE_CHANGED = 2, /** uses opt */ NATIVE_PLUGIN_OPCODE_OFFLINE_CHANGED = 3, /** uses value (0=off, 1=on) */ NATIVE_PLUGIN_OPCODE_UI_NAME_CHANGED = 4, /** uses ptr */ NATIVE_PLUGIN_OPCODE_GET_INTERNAL_HANDLE = 5 /** nothing */ } NativePluginDispatcherOpcode; typedef enum { NATIVE_HOST_OPCODE_NULL = 0, /** nothing */ NATIVE_HOST_OPCODE_UPDATE_PARAMETER = 1, /** uses index, -1 for all */ NATIVE_HOST_OPCODE_UPDATE_MIDI_PROGRAM = 2, /** uses index, -1 for all; may use value for channel */ NATIVE_HOST_OPCODE_RELOAD_PARAMETERS = 3, /** nothing */ NATIVE_HOST_OPCODE_RELOAD_MIDI_PROGRAMS = 4, /** nothing */ NATIVE_HOST_OPCODE_RELOAD_ALL = 5, /** nothing */ NATIVE_HOST_OPCODE_UI_UNAVAILABLE = 6, /** nothing */ NATIVE_HOST_OPCODE_HOST_IDLE = 7, /** nothing */ NATIVE_HOST_OPCODE_INTERNAL_PLUGIN = 8, /** nothing */ NATIVE_HOST_OPCODE_QUEUE_INLINE_DISPLAY = 9, /** nothing */ NATIVE_HOST_OPCODE_UI_TOUCH_PARAMETER = 10 /** uses index, value as bool */ } NativeHostDispatcherOpcode; /* ------------------------------------------------------------------------------------------------------------ * base structs */ typedef struct { const char* label; float value; } NativeParameterScalePoint; typedef struct { float def; float min; float max; float step; float stepSmall; float stepLarge; } NativeParameterRanges; #define PARAMETER_RANGES_DEFAULT_STEP 0.01f #define PARAMETER_RANGES_DEFAULT_STEP_SMALL 0.0001f #define PARAMETER_RANGES_DEFAULT_STEP_LARGE 0.1f typedef struct { NativeParameterHints hints; const char* name; const char* unit; NativeParameterRanges ranges; uint32_t scalePointCount; const NativeParameterScalePoint* scalePoints; } NativeParameter; typedef struct { uint32_t time; uint8_t port; uint8_t size; uint8_t data[4]; } NativeMidiEvent; typedef struct { uint32_t bank; uint32_t program; const char* name; } NativeMidiProgram; typedef struct { bool valid; int32_t bar; /** current bar */ int32_t beat; /** current beat-within-bar */ double tick; /** current tick-within-beat */ double barStartTick; float beatsPerBar; /** time signature "numerator" */ float beatType; /** time signature "denominator" */ double ticksPerBeat; double beatsPerMinute; } NativeTimeInfoBBT; typedef struct { bool playing; uint64_t frame; uint64_t usecs; NativeTimeInfoBBT bbt; } NativeTimeInfo; typedef struct { unsigned char* data; int width; int height; int stride; } NativeInlineDisplayImageSurface; /* ------------------------------------------------------------------------------------------------------------ * HostDescriptor */ typedef struct { NativeHostHandle handle; const char* resourceDir; const char* uiName; uintptr_t uiParentId; uint32_t (*get_buffer_size)(NativeHostHandle handle); double (*get_sample_rate)(NativeHostHandle handle); bool (*is_offline)(NativeHostHandle handle); const NativeTimeInfo* (*get_time_info)(NativeHostHandle handle); bool (*write_midi_event)(NativeHostHandle handle, const NativeMidiEvent* event); void (*ui_parameter_changed)(NativeHostHandle handle, uint32_t index, float value); void (*ui_midi_program_changed)(NativeHostHandle handle, uint8_t channel, uint32_t bank, uint32_t program); void (*ui_custom_data_changed)(NativeHostHandle handle, const char* key, const char* value); void (*ui_closed)(NativeHostHandle handle); const char* (*ui_open_file)(NativeHostHandle handle, bool isDir, const char* title, const char* filter); const char* (*ui_save_file)(NativeHostHandle handle, bool isDir, const char* title, const char* filter); intptr_t (*dispatcher)(NativeHostHandle handle, NativeHostDispatcherOpcode opcode, int32_t index, intptr_t value, void* ptr, float opt); } NativeHostDescriptor; /* ------------------------------------------------------------------------------------------------------------ * PluginDescriptor */ typedef struct _NativePluginDescriptor { const NativePluginCategory category; const NativePluginHints hints; const NativePluginSupports supports; const uint32_t audioIns; const uint32_t audioOuts; const uint32_t midiIns; const uint32_t midiOuts; const uint32_t paramIns; const uint32_t paramOuts; const char* const name; const char* const label; const char* const maker; const char* const copyright; NativePluginHandle (*instantiate)(const NativeHostDescriptor* host); void (*cleanup)(NativePluginHandle handle); uint32_t (*get_parameter_count)(NativePluginHandle handle); const NativeParameter* (*get_parameter_info)(NativePluginHandle handle, uint32_t index); float (*get_parameter_value)(NativePluginHandle handle, uint32_t index); uint32_t (*get_midi_program_count)(NativePluginHandle handle); const NativeMidiProgram* (*get_midi_program_info)(NativePluginHandle handle, uint32_t index); void (*set_parameter_value)(NativePluginHandle handle, uint32_t index, float value); void (*set_midi_program)(NativePluginHandle handle, uint8_t channel, uint32_t bank, uint32_t program); void (*set_custom_data)(NativePluginHandle handle, const char* key, const char* value); void (*ui_show)(NativePluginHandle handle, bool show); void (*ui_idle)(NativePluginHandle handle); void (*ui_set_parameter_value)(NativePluginHandle handle, uint32_t index, float value); void (*ui_set_midi_program)(NativePluginHandle handle, uint8_t channel, uint32_t bank, uint32_t program); void (*ui_set_custom_data)(NativePluginHandle handle, const char* key, const char* value); void (*activate)(NativePluginHandle handle); void (*deactivate)(NativePluginHandle handle); void (*process)(NativePluginHandle handle, const float** inBuffer, float** outBuffer, uint32_t frames, const NativeMidiEvent* midiEvents, uint32_t midiEventCount); char* (*get_state)(NativePluginHandle handle); void (*set_state)(NativePluginHandle handle, const char* data); intptr_t (*dispatcher)(NativePluginHandle handle, NativePluginDispatcherOpcode opcode, int32_t index, intptr_t value, void* ptr, float opt); const NativeInlineDisplayImageSurface* (*render_inline_display)(NativePluginHandle handle, uint32_t width, uint32_t height); // placed at the end for backwards compatibility. only valid if NATIVE_PLUGIN_USES_CONTROL_VOLTAGE is set const uint32_t cvIns; const uint32_t cvOuts; } NativePluginDescriptor; /* ------------------------------------------------------------------------------------------------------------ * Register plugin */ /** Implemented by host */ extern void carla_register_native_plugin(const NativePluginDescriptor* desc); /** Called once on host init */ void carla_register_all_native_plugins(void); /** Get meta-data only */ const NativePluginDescriptor* carla_get_native_plugins_data(uint32_t* count); /* ------------------------------------------------------------------------------------------------------------ */ /**@}*/ #ifdef __cplusplus } /* extern "C" */ #endif #endif /* CARLA_NATIVE_H_INCLUDED */