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Diffstat (limited to 'src/core/plugin.h')
| -rw-r--r-- | src/core/plugin.h | 168 |
1 files changed, 168 insertions, 0 deletions
diff --git a/src/core/plugin.h b/src/core/plugin.h new file mode 100644 index 0000000..b03c343 --- /dev/null +++ b/src/core/plugin.h @@ -0,0 +1,168 @@ +/* --------------------------------------------------------------------- + * + * Giada - Your Hardcore Loopmachine + * + * plugin + * + * --------------------------------------------------------------------- + * + * Copyright (C) 2010-2015 Giovanni A. Zuliani | Monocasual + * + * This file is part of Giada - Your Hardcore Loopmachine. + * + * Giada - Your Hardcore Loopmachine 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 3 of the License, or (at your option) any later version. + * + * Giada - Your Hardcore Loopmachine 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. + * + * You should have received a copy of the GNU General Public License + * along with Giada - Your Hardcore Loopmachine. If not, see + * <http://www.gnu.org/licenses/>. + * + * ------------------------------------------------------------------ */ + +#ifdef WITH_VST + +#ifndef __PLUGIN_H +#define __PLUGIN_H + +#include <cstdio> + +/* before including aeffetx(x).h we must define __cdecl, otherwise VST + * headers can't be compiled correctly. In windows __cdecl is already + * defined. */ + +#ifdef __GNUC__ + #ifndef _WIN32 + #define __cdecl + #endif +#endif + +#include "../deps/vst/aeffectx.h" + +#if defined(_WIN32) + #include <windows.h> +#elif defined(__linux__) + #include <dlfcn.h> + #include <X11/Xlib.h> +#elif defined(__APPLE__) + #include <CoreFoundation/CFBundle.h> +#endif + +#include <limits.h> // PATH_MAX + + +// Plugin's entry point +typedef AEffect* (*vstPluginFuncPtr)(audioMasterCallback host); + + +class Plugin { + +private: + +#if defined(_WIN32) || defined(__linux__) + void *module; // dll, so, ... +#elif defined(__APPLE__) + CFBundleRef module; // OSX bundle +#endif + + vstPluginFuncPtr entryPoint; // VST entry point + AEffect *plugin; // real plugin + + /* each plugin has an unique ID */ + + static int id_generator; + int id; + + /* program + * selected program. -1 if no program available */ + + int program; + + /* unload + * free plugin from memory. Calls dlclose and similars. */ + + int unload(); + +public: + Plugin(); + ~Plugin(); + + int load(const char *fname); + int init(VstIntPtr VSTCALLBACK (*HostCallback)(AEffect*, VstInt32, VstInt32, VstIntPtr, void*, float)); + int setup(int samplerate, int frames); + + AEffect *getPlugin(); + + /* get[Item]. + * Wrappers called by host when it wants info from the plugin. */ + + int getId(); + int getSDKVersion(); + void getName (char *out); + void getVendor (char *out); + void getProduct(char *out); + int getNumPrograms(); // list all programs + int setProgram(int index); // load a program + int getNumParams(); + int getNumInputs(); + int getNumOutputs(); + void getProgramName(int index, char *out); // program = preset + void getParamName(int index, char *out); + void getParamLabel(int index, char *out); // parameter's value(0, -39, ...) + void getParamDisplay(int index, char *out); // parameter's unit measurement (dB, Pan, ...) + float getParam(int index); + void getRect(ERect **out); + void setParam(int index, float value); + + bool hasGui(); + void openGui(void *w); + void closeGui(); + int getGuiWidth(); + int getGuiHeight(); + void idle(); + + void processAudio (float **in, float **out, long frames); + void processEvents(VstEvents *events); + void resume(); + void suspend(); + void close(); + + inline int getProgram() { return program; } + + /* there's a specific opcode for the bypass, but we don't trust the + * plugin's developers. */ + + bool bypass; + + /* the status of the plugin: + * 1: ok + * 0: missing (file not found) */ + + int status; + + /* suspended + * true after suspend(), false after resume(). A suspended plugin isn't + * processed by pluginHost. */ + + bool suspended; + + /* pathfile + * full filename path */ + + char pathfile[PATH_MAX]; + + /* window + * plugin must know its window in case of a resize via opcode */ + + class gWindow *window; +}; + +#endif + +#endif // #ifdef WITH_VST |