435 lines
19 KiB
C++
435 lines
19 KiB
C++
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#pragma once
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#include <cassert>
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#include <functional>
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#include <mutex>
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#include <queue>
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#include <string>
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#include <string_view>
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#include <vector>
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#include <clap/clap.h>
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#include "checking-level.hh"
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#include "host-proxy.hh"
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#include "misbehaviour-handler.hh"
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namespace clap { namespace helpers {
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/// @brief C++ glue and checks
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///
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/// @note for an higher level implementation, see @ref PluginHelper
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template <MisbehaviourHandler h, CheckingLevel l>
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class Plugin {
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public:
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const clap_plugin *clapPlugin() noexcept { return &_plugin; }
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protected:
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Plugin(const clap_plugin_descriptor *desc, const clap_host *host);
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virtual ~Plugin() = default;
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// not copyable, not moveable
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Plugin(const Plugin &) = delete;
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Plugin(Plugin &&) = delete;
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Plugin &operator=(const Plugin &) = delete;
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Plugin &operator=(Plugin &&) = delete;
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/////////////////////////
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// Methods to override //
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/////////////////////////
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//-------------//
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// clap_plugin //
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//-------------//
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virtual bool init() noexcept { return true; }
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virtual bool
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activate(double sampleRate, uint32_t minFrameCount, uint32_t maxFrameCount) noexcept {
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return true;
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}
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virtual void deactivate() noexcept {}
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virtual bool startProcessing() noexcept { return true; }
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virtual void stopProcessing() noexcept {}
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virtual clap_process_status process(const clap_process *process) noexcept {
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return CLAP_PROCESS_SLEEP;
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}
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virtual void reset() noexcept {}
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virtual void onMainThread() noexcept {}
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virtual const void *extension(const char *id) noexcept { return nullptr; }
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//---------------------//
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// clap_plugin_latency //
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//---------------------//
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virtual bool implementsLatency() const noexcept { return false; }
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virtual uint32_t latencyGet() const noexcept { return 0; }
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//------------------//
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// clap_plugin_tail //
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//------------------//
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virtual bool implementsTail() const noexcept { return false; }
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virtual uint32_t tailGet(const clap_plugin_t *plugin) const noexcept { return 0; }
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//--------------------//
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// clap_plugin_render //
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//--------------------//
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virtual bool implementsRender() const noexcept { return false; }
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virtual bool renderHasHardRealtimeRequirement() noexcept { return false; }
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virtual bool renderSetMode(clap_plugin_render_mode mode) noexcept { return false; }
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//-------------------------//
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// clap_plugin_thread_pool //
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//-------------------------//
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virtual bool implementsThreadPool() const noexcept { return false; }
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virtual void threadPoolExec(uint32_t taskIndex) noexcept {}
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//-------------------//
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// clap_plugin_state //
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//-------------------//
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virtual bool implementsState() const noexcept { return false; }
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virtual bool stateSave(const clap_ostream *stream) noexcept { return false; }
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virtual bool stateLoad(const clap_istream *stream) noexcept { return false; }
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//-------------------------//
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// clap_plugin_preset_load //
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//-------------------------//
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virtual bool implementsPresetLoad() const noexcept { return false; }
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virtual bool presetLoadFromFile(const char *path) noexcept { return false; }
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//------------------------//
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// clap_plugin_track_info //
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//------------------------//
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virtual bool implementsTrackInfo() const noexcept { return false; }
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virtual void trackInfoChanged() noexcept {}
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//-------------------------//
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// clap_plugin_audio_ports //
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//-------------------------//
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virtual bool implementsAudioPorts() const noexcept { return false; }
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virtual uint32_t audioPortsCount(bool isInput) const noexcept { return 0; }
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virtual bool
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audioPortsInfo(uint32_t index, bool isInput, clap_audio_port_info *info) const noexcept {
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return false;
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}
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virtual uint32_t audioPortsConfigCount() const noexcept { return 0; }
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virtual bool audioPortsGetConfig(uint32_t index,
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clap_audio_ports_config *config) const noexcept {
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return false;
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}
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virtual bool audioPortsSetConfig(clap_id configId) noexcept { return false; }
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//--------------------//
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// clap_plugin_params //
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//--------------------//
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virtual bool implementsParams() const noexcept { return false; }
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virtual uint32_t paramsCount() const noexcept { return 0; }
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virtual bool paramsInfo(uint32_t paramIndex, clap_param_info *info) const noexcept {
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return false;
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}
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virtual bool paramsValue(clap_id paramId, double *value) noexcept { return false; }
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virtual bool
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paramsValueToText(clap_id paramId, double value, char *display, uint32_t size) noexcept {
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return false;
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}
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virtual bool paramsTextToValue(clap_id paramId, const char *display, double *value) noexcept {
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return false;
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}
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virtual void paramsFlush(const clap_input_events *in,
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const clap_output_events *out) noexcept {}
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virtual bool isValidParamId(clap_id paramId) const noexcept;
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//----------------------------//
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// clap_plugin_quick_controls //
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//----------------------------//
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virtual bool implementQuickControls() const noexcept { return false; }
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virtual uint32_t quickControlsPageCount() noexcept { return 0; }
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virtual bool quickControlsPageGet(uint32_t pageIndex,
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clap_quick_controls_page *page) noexcept {
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return false;
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}
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virtual void quickControlsSelectPage(clap_id pageId) noexcept {}
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virtual clap_id quickControlsSelectedPage() noexcept { return CLAP_INVALID_ID; }
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//------------------------//
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// clap_plugin_note_ports //
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//------------------------//
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virtual bool implementsNotePorts() const noexcept { return false; }
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virtual uint32_t notePortsCount(bool isInput) const noexcept { return 0; }
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virtual bool
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notePortsInfo(uint32_t index, bool isInput, clap_note_port_info *info) const noexcept {
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return false;
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}
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//-----------------------//
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// clap_plugin_note_name //
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//-----------------------//
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virtual bool implementsNoteName() const noexcept { return false; }
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virtual int noteNameCount() noexcept { return 0; }
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virtual bool noteNameGet(int index, clap_note_name *noteName) noexcept { return false; }
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//---------------------------//
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// clap_plugin_timer_support //
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//---------------------------//
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virtual bool implementsTimerSupport() const noexcept { return false; }
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virtual void onTimer(clap_id timerId) noexcept {}
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//------------------------------//
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// clap_plugin_posix_fd_support //
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//------------------------------//
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virtual bool implementsPosixFdSupport() const noexcept { return false; }
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virtual void onPosixFd(int fd, int flags) noexcept {}
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//-----------------//
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// clap_plugin_gui //
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//-----------------//
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virtual bool implementsGui() const noexcept { return false; }
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virtual bool guiIsApiSupported(const char *api, bool isFloating) noexcept { return false; }
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virtual bool guiGetPreferredApi(const char **api, bool *is_floating) noexcept {
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return false;
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}
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virtual bool guiCreate(const char *api, bool isFloating) noexcept { return false; }
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virtual void guiDestroy() noexcept {}
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virtual bool guiSetScale(double scale) noexcept { return false; }
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virtual bool guiShow() noexcept { return false; }
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virtual bool guiHide() noexcept { return false; }
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virtual bool guiGetSize(uint32_t *width, uint32_t *height) noexcept { return false; }
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virtual bool guiCanResize() const noexcept { return false; }
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virtual bool guiGetResizeHints(clap_gui_resize_hints_t *hints) noexcept { return false; }
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virtual bool guiAdjustSize(uint32_t *width, uint32_t *height) noexcept {
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return guiGetSize(width, height);
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}
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virtual bool guiSetSize(uint32_t width, uint32_t height) noexcept { return false; }
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virtual void guiSuggestTitle(const char *title) noexcept {}
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virtual bool guiSetParent(const clap_window *window) noexcept { return false; }
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virtual bool guiSetTransient(const clap_window *window) noexcept { return false; }
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//------------------------//
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// clap_plugin_voice_info //
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//------------------------//
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virtual bool implementsVoiceInfo() const noexcept { return false; }
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virtual bool voiceInfoGet(clap_voice_info *info) noexcept { return false; }
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/////////////
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// Logging //
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/////////////
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void log(clap_log_severity severity, const char *msg) const noexcept;
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void hostMisbehaving(const char *msg) const noexcept;
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void hostMisbehaving(const std::string &msg) const noexcept { hostMisbehaving(msg.c_str()); }
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// Receives a copy of all the logging messages sent to the host.
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// This is useful to have the messages in both the host's logs and the plugin's logs.
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virtual void logTee(clap_log_severity severity, const char *msg) const noexcept {}
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/////////////////////
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// Thread Checking //
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/////////////////////
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void checkMainThread() const noexcept;
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void checkAudioThread() const noexcept;
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void checkParamThread() const noexcept;
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void ensureMainThread(const char *method) const noexcept;
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void ensureAudioThread(const char *method) const noexcept;
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void ensureParamThread(const char *method) const noexcept;
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///////////////
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// Utilities //
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///////////////
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static Plugin &from(const clap_plugin *plugin, bool requireInitialized = true) noexcept;
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// runs the callback immediately if on the main thread, otherwise queue it.
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// be aware that the callback may be ran during the plugin destruction phase,
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// so check isBeingDestroyed() and ajust your code.
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void runOnMainThread(std::function<void()> callback);
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// This actually runs callbacks on the main thread, you should not need to call it
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void runCallbacksOnMainThread();
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template <typename T>
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void initInterface(const T *&ptr, const char *id) noexcept;
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void initInterfaces() noexcept;
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static uint32_t compareAudioPortsInfo(const clap_audio_port_info &a,
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const clap_audio_port_info &b) noexcept;
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//////////////////////
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// Processing State //
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//////////////////////
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bool isActive() const noexcept { return _isActive; }
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bool isProcessing() const noexcept { return _isProcessing; }
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int sampleRate() const noexcept {
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assert(_isActive && "sample rate is only known if the plugin is active");
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assert(_sampleRate > 0);
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return _sampleRate;
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}
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bool isBeingDestroyed() const noexcept { return _isBeingDestroyed; }
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protected:
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HostProxy<h, l> _host;
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private:
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/////////////////////
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// CLAP Interfaces //
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/////////////////////
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clap_plugin _plugin;
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// clap_plugin
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static bool clapInit(const clap_plugin *plugin) noexcept;
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static void clapDestroy(const clap_plugin *plugin) noexcept;
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static bool clapActivate(const clap_plugin *plugin,
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double sample_rate,
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uint32_t minFrameCount,
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uint32_t maxFrameCount) noexcept;
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static void clapDeactivate(const clap_plugin *plugin) noexcept;
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static bool clapStartProcessing(const clap_plugin *plugin) noexcept;
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static void clapStopProcessing(const clap_plugin *plugin) noexcept;
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static void clapReset(const clap_plugin *plugin) noexcept;
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static clap_process_status clapProcess(const clap_plugin *plugin,
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const clap_process *process) noexcept;
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static void clapOnMainThread(const clap_plugin *plugin) noexcept;
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static const void *clapExtension(const clap_plugin *plugin, const char *id) noexcept;
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// latency
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static uint32_t clapLatencyGet(const clap_plugin *plugin) noexcept;
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// clap_plugin_tail
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static uint32_t clapTailGet(const clap_plugin_t *plugin) noexcept;
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// clap_plugin_render
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static bool clapRenderHasHardRealtimeRequirement(const clap_plugin_t *plugin) noexcept;
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static bool clapRenderSetMode(const clap_plugin *plugin,
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clap_plugin_render_mode mode) noexcept;
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// clap_plugin_thread_pool
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static void clapThreadPoolExec(const clap_plugin *plugin, uint32_t task_index) noexcept;
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// clap_plugin_state
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static bool clapStateSave(const clap_plugin *plugin, const clap_ostream *stream) noexcept;
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static bool clapStateLoad(const clap_plugin *plugin, const clap_istream *stream) noexcept;
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// clap_plugin_preset
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static bool clapPresetLoadFromFile(const clap_plugin *plugin, const char *path) noexcept;
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// clap_plugin_track_info
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static void clapTrackInfoChanged(const clap_plugin *plugin) noexcept;
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// clap_plugin_audio_ports
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static uint32_t clapAudioPortsCount(const clap_plugin *plugin, bool is_input) noexcept;
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static bool clapAudioPortsInfo(const clap_plugin *plugin,
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uint32_t index,
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bool is_input,
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clap_audio_port_info *info) noexcept;
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static uint32_t clapAudioPortsConfigCount(const clap_plugin *plugin) noexcept;
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static bool clapAudioPortsGetConfig(const clap_plugin *plugin,
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uint32_t index,
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clap_audio_ports_config *config) noexcept;
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static bool clapAudioPortsSetConfig(const clap_plugin *plugin, clap_id config_id) noexcept;
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// clap_plugin_params
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static uint32_t clapParamsCount(const clap_plugin *plugin) noexcept;
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static bool clapParamsInfo(const clap_plugin *plugin,
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uint32_t param_index,
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clap_param_info *param_info) noexcept;
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static bool
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clapParamsValue(const clap_plugin *plugin, clap_id param_id, double *value) noexcept;
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static bool clapParamsValueToText(const clap_plugin *plugin,
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clap_id param_id,
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double value,
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char *display,
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uint32_t size) noexcept;
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static bool clapParamsTextToValue(const clap_plugin *plugin,
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clap_id param_id,
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const char *display,
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double *value) noexcept;
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static void clapParamsFlush(const clap_plugin *plugin,
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const clap_input_events *in,
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const clap_output_events *out) noexcept;
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// clap_plugin_quick_controls
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static uint32_t clapQuickControlsPageCount(const clap_plugin *plugin) noexcept;
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static bool clapQuickControlsPageGet(const clap_plugin *plugin,
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uint32_t page_index,
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clap_quick_controls_page *page) noexcept;
|
||
|
|
|
||
|
|
// clap_plugin_note_port
|
||
|
|
static uint32_t clapNotePortsCount(const clap_plugin *plugin, bool is_input) noexcept;
|
||
|
|
static bool clapNotePortsInfo(const clap_plugin *plugin,
|
||
|
|
uint32_t index,
|
||
|
|
bool is_input,
|
||
|
|
clap_note_port_info *info) noexcept;
|
||
|
|
|
||
|
|
// clap_plugin_note_name
|
||
|
|
static uint32_t clapNoteNameCount(const clap_plugin *plugin) noexcept;
|
||
|
|
static bool clapNoteNameGet(const clap_plugin *plugin,
|
||
|
|
uint32_t index,
|
||
|
|
clap_note_name *note_name) noexcept;
|
||
|
|
|
||
|
|
// clap_plugin_timer_support
|
||
|
|
static void clapOnTimer(const clap_plugin *plugin, clap_id timer_id) noexcept;
|
||
|
|
|
||
|
|
// clap_plugin_fd_support
|
||
|
|
static void
|
||
|
|
clapOnPosixFd(const clap_plugin *plugin, int fd, clap_posix_fd_flags_t flags) noexcept;
|
||
|
|
|
||
|
|
// clap_plugin_gui
|
||
|
|
static bool
|
||
|
|
clapGuiIsApiSupported(const clap_plugin *plugin, const char *api, bool isFloating) noexcept;
|
||
|
|
static bool clapGuiGetPreferredApi(const clap_plugin_t *plugin,
|
||
|
|
const char **api,
|
||
|
|
bool *is_floating) noexcept;
|
||
|
|
static bool
|
||
|
|
clapGuiCreate(const clap_plugin *plugin, const char *api, bool isFloating) noexcept;
|
||
|
|
static void clapGuiDestroy(const clap_plugin *plugin) noexcept;
|
||
|
|
static bool clapGuiSetScale(const clap_plugin *plugin, double scale) noexcept;
|
||
|
|
static bool
|
||
|
|
clapGuiGetSize(const clap_plugin *plugin, uint32_t *width, uint32_t *height) noexcept;
|
||
|
|
static bool
|
||
|
|
clapGuiSetSize(const clap_plugin *plugin, uint32_t width, uint32_t height) noexcept;
|
||
|
|
static bool clapGuiCanResize(const clap_plugin *plugin) noexcept;
|
||
|
|
static bool clapGuiGetResizeHints(const clap_plugin_t *plugin,
|
||
|
|
clap_gui_resize_hints_t *hints) noexcept;
|
||
|
|
static bool
|
||
|
|
clapGuiAdjustSize(const clap_plugin *plugin, uint32_t *width, uint32_t *height) noexcept;
|
||
|
|
static bool clapGuiShow(const clap_plugin *plugin) noexcept;
|
||
|
|
static bool clapGuiHide(const clap_plugin *plugin) noexcept;
|
||
|
|
static bool clapGuiSetParent(const clap_plugin *plugin, const clap_window *window) noexcept;
|
||
|
|
static bool clapGuiSetTransient(const clap_plugin *plugin,
|
||
|
|
const clap_window *window) noexcept;
|
||
|
|
|
||
|
|
static void clapGuiSuggestTitle(const clap_plugin *plugin, const char *title) noexcept;
|
||
|
|
|
||
|
|
static bool clapVoiceInfoGet(const clap_plugin *plugin, clap_voice_info *info) noexcept;
|
||
|
|
|
||
|
|
// interfaces
|
||
|
|
static const clap_plugin_render _pluginRender;
|
||
|
|
static const clap_plugin_thread_pool _pluginThreadPool;
|
||
|
|
static const clap_plugin_state _pluginState;
|
||
|
|
static const clap_plugin_preset_load _pluginPresetLoad;
|
||
|
|
static const clap_plugin_track_info _pluginTrackInfo;
|
||
|
|
static const clap_plugin_audio_ports _pluginAudioPorts;
|
||
|
|
static const clap_plugin_audio_ports_config _pluginAudioPortsConfig;
|
||
|
|
static const clap_plugin_params _pluginParams;
|
||
|
|
static const clap_plugin_quick_controls _pluginQuickControls;
|
||
|
|
static const clap_plugin_latency _pluginLatency;
|
||
|
|
static const clap_plugin_note_ports _pluginNotePorts;
|
||
|
|
static const clap_plugin_note_name _pluginNoteName;
|
||
|
|
static const clap_plugin_timer_support _pluginTimerSupport;
|
||
|
|
static const clap_plugin_posix_fd_support _pluginPosixFdSupport;
|
||
|
|
static const clap_plugin_gui _pluginGui;
|
||
|
|
static const clap_plugin_voice_info _pluginVoiceInfo;
|
||
|
|
static const clap_plugin_tail _pluginTail;
|
||
|
|
|
||
|
|
// state
|
||
|
|
bool _wasInitialized = false;
|
||
|
|
bool _isActive = false;
|
||
|
|
bool _isProcessing = false;
|
||
|
|
bool _isBeingDestroyed = false;
|
||
|
|
double _sampleRate = 0;
|
||
|
|
|
||
|
|
std::string _guiApi;
|
||
|
|
bool _isGuiCreated = false;
|
||
|
|
bool _isGuiFloating = false;
|
||
|
|
bool _isGuiEmbedded = false;
|
||
|
|
|
||
|
|
std::mutex _mainThredCallbacksLock;
|
||
|
|
std::queue<std::function<void()>> _mainThredCallbacks;
|
||
|
|
};
|
||
|
|
}} // namespace clap::helpers
|