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Diffstat (limited to 'src/jalv_internal.h')
| -rw-r--r-- | src/jalv_internal.h | 559 |
1 files changed, 559 insertions, 0 deletions
diff --git a/src/jalv_internal.h b/src/jalv_internal.h new file mode 100644 index 0000000..9ee880c --- /dev/null +++ b/src/jalv_internal.h @@ -0,0 +1,559 @@ +/* + Copyright 2007-2016 David Robillard <http://drobilla.net> + + Permission to use, copy, modify, and/or distribute this software for any + purpose with or without fee is hereby granted, provided that the above + copyright notice and this permission notice appear in all copies. + + THIS SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES + WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF + MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR + ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES + WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN + ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF + OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. +*/ + +#ifndef JALV_INTERNAL_H +#define JALV_INTERNAL_H + +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#ifdef HAVE_ISATTY +# include <unistd.h> +#endif + +#include "lilv/lilv.h" +#include "serd/serd.h" +#ifdef HAVE_SUIL +#include "suil/suil.h" +#endif + +#include "lv2/lv2plug.in/ns/ext/atom/atom.h" +#include "lv2/lv2plug.in/ns/ext/atom/forge.h" +#include "lv2/lv2plug.in/ns/ext/data-access/data-access.h" +#include "lv2/lv2plug.in/ns/ext/log/log.h" +#include "lv2/lv2plug.in/ns/ext/midi/midi.h" +#include "lv2/lv2plug.in/ns/ext/resize-port/resize-port.h" +#include "lv2/lv2plug.in/ns/ext/state/state.h" +#include "lv2/lv2plug.in/ns/ext/urid/urid.h" +#include "lv2/lv2plug.in/ns/ext/worker/worker.h" +#include "lv2/lv2plug.in/ns/ext/options/options.h" + +#include "zix/ring.h" +#include "zix/sem.h" +#include "zix/thread.h" + +#include "sratom/sratom.h" + +#include "lv2_evbuf.h" +#include "symap.h" + +#ifdef __clang__ +# define REALTIME __attribute__((annotate("realtime"))) +#else +# define REALTIME +#endif + +#ifdef __cplusplus +extern "C" { +#endif + +typedef struct JalvBackend JalvBackend; + +typedef struct Jalv Jalv; + +enum PortFlow { + FLOW_UNKNOWN, + FLOW_INPUT, + FLOW_OUTPUT +}; + +enum PortType { + TYPE_UNKNOWN, + TYPE_CONTROL, + TYPE_AUDIO, + TYPE_EVENT, + TYPE_CV +}; + +struct Port { + const LilvPort* lilv_port; ///< LV2 port + enum PortType type; ///< Data type + enum PortFlow flow; ///< Data flow direction + void* sys_port; ///< For audio/MIDI ports, otherwise NULL + LV2_Evbuf* evbuf; ///< For MIDI ports, otherwise NULL + void* widget; ///< Control widget, if applicable + size_t buf_size; ///< Custom buffer size, or 0 + uint32_t index; ///< Port index + float control; ///< For control ports, otherwise 0.0f +}; + +/* Controls */ + +/** Type of plugin control. */ +typedef enum { + PORT, ///< Control port + PROPERTY ///< Property (set via atom message) +} ControlType; + +typedef struct { + float value; + char* label; +} ScalePoint; + +/** Order scale points by value. */ +int scale_point_cmp(const ScalePoint* a, const ScalePoint* b); + +/** Plugin control. */ +typedef struct { + Jalv* jalv; + ControlType type; + LilvNode* node; + LilvNode* symbol; ///< Symbol + LilvNode* label; ///< Human readable label + LV2_URID property; ///< Iff type == PROPERTY + uint32_t index; ///< Iff type == PORT + LilvNode* group; ///< Port/control group, or NULL + void* widget; ///< Control Widget + size_t n_points; ///< Number of scale points + ScalePoint* points; ///< Scale points + LV2_URID value_type; ///< Type of control value + LilvNode* min; ///< Minimum value + LilvNode* max; ///< Maximum value + LilvNode* def; ///< Default value + bool is_toggle; ///< Boolean (0 and 1 only) + bool is_integer; ///< Integer values only + bool is_enumeration; ///< Point values only + bool is_logarithmic; ///< Logarithmic scale + bool is_writable; ///< Writable (input) + bool is_readable; ///< Readable (output) +} ControlID; + +ControlID* +new_port_control(Jalv* jalv, uint32_t index); + +ControlID* +new_property_control(Jalv* jalv, const LilvNode* property); + +typedef struct { + size_t n_controls; + ControlID** controls; +} Controls; + +void +add_control(Controls* controls, ControlID* control); + +ControlID* +get_property_control(const Controls* controls, LV2_URID property); + +/** + Control change event, sent through ring buffers for UI updates. +*/ +typedef struct { + uint32_t index; + uint32_t protocol; + uint32_t size; + uint8_t body[]; +} ControlChange; + +typedef struct { + char* name; ///< Client name + int name_exact; ///< Exit if name is taken + char* uuid; ///< Session UUID + char* load; ///< Path for state to load + char* preset; ///< URI of preset to load + char** controls; ///< Control values + uint32_t buffer_size; ///< Plugin <= >UI communication buffer size + double update_rate; ///< UI update rate in Hz + int dump; ///< Dump communication iff true + int trace; ///< Print trace log iff true + int generic_ui; ///< Use generic UI iff true + int show_hidden; ///< Show controls for notOnGUI ports + int no_menu; ///< Hide menu iff true + int show_ui; ///< Show non-embedded UI + int print_controls; ///< Print control changes to stdout + int non_interactive; ///< Do not listen for commands on stdin +} JalvOptions; + +typedef struct { + LV2_URID atom_Float; + LV2_URID atom_Int; + LV2_URID atom_Object; + LV2_URID atom_Path; + LV2_URID atom_String; + LV2_URID atom_eventTransfer; + LV2_URID bufsz_maxBlockLength; + LV2_URID bufsz_minBlockLength; + LV2_URID bufsz_sequenceSize; + LV2_URID log_Error; + LV2_URID log_Trace; + LV2_URID log_Warning; + LV2_URID midi_MidiEvent; + LV2_URID param_sampleRate; + LV2_URID patch_Get; + LV2_URID patch_Put; + LV2_URID patch_Set; + LV2_URID patch_body; + LV2_URID patch_property; + LV2_URID patch_value; + LV2_URID time_Position; + LV2_URID time_bar; + LV2_URID time_barBeat; + LV2_URID time_beatUnit; + LV2_URID time_beatsPerBar; + LV2_URID time_beatsPerMinute; + LV2_URID time_frame; + LV2_URID time_speed; + LV2_URID ui_updateRate; +} JalvURIDs; + +typedef struct { + LilvNode* atom_AtomPort; + LilvNode* atom_Chunk; + LilvNode* atom_Float; + LilvNode* atom_Path; + LilvNode* atom_Sequence; + LilvNode* lv2_AudioPort; + LilvNode* lv2_CVPort; + LilvNode* lv2_ControlPort; + LilvNode* lv2_InputPort; + LilvNode* lv2_OutputPort; + LilvNode* lv2_connectionOptional; + LilvNode* lv2_control; + LilvNode* lv2_default; + LilvNode* lv2_enumeration; + LilvNode* lv2_integer; + LilvNode* lv2_maximum; + LilvNode* lv2_minimum; + LilvNode* lv2_name; + LilvNode* lv2_reportsLatency; + LilvNode* lv2_sampleRate; + LilvNode* lv2_symbol; + LilvNode* lv2_toggled; + LilvNode* midi_MidiEvent; + LilvNode* pg_group; + LilvNode* pprops_logarithmic; + LilvNode* pprops_notOnGUI; + LilvNode* pprops_rangeSteps; + LilvNode* pset_Preset; + LilvNode* pset_bank; + LilvNode* rdfs_comment; + LilvNode* rdfs_label; + LilvNode* rdfs_range; + LilvNode* rsz_minimumSize; + LilvNode* work_interface; + LilvNode* work_schedule; + LilvNode* end; ///< NULL terminator for easy freeing of entire structure +} JalvNodes; + +typedef enum { + JALV_RUNNING, + JALV_PAUSE_REQUESTED, + JALV_PAUSED +} JalvPlayState; + +typedef struct { + Jalv* jalv; ///< Pointer back to Jalv + ZixRing* requests; ///< Requests to the worker + ZixRing* responses; ///< Responses from the worker + void* response; ///< Worker response buffer + ZixSem sem; ///< Worker semaphore + ZixThread thread; ///< Worker thread + const LV2_Worker_Interface* iface; ///< Plugin worker interface + bool threaded; ///< Run work in another thread +} JalvWorker; + +typedef struct { + LV2_Feature map_feature; + LV2_Feature unmap_feature; + LV2_State_Make_Path make_path; + LV2_Feature make_path_feature; + LV2_Worker_Schedule sched; + LV2_Feature sched_feature; + LV2_Worker_Schedule ssched; + LV2_Feature state_sched_feature; + LV2_Log_Log llog; + LV2_Feature log_feature; + LV2_Options_Option options[6]; + LV2_Feature options_feature; + LV2_Feature safe_restore_feature; + LV2_Extension_Data_Feature ext_data; +} JalvFeatures; + +struct Jalv { + JalvOptions opts; ///< Command-line options + JalvURIDs urids; ///< URIDs + JalvNodes nodes; ///< Nodes + LV2_Atom_Forge forge; ///< Atom forge + const char* prog_name; ///< Program name (argv[0]) + LilvWorld* world; ///< Lilv World + LV2_URID_Map map; ///< URI => Int map + LV2_URID_Unmap unmap; ///< Int => URI map + SerdEnv* env; ///< Environment for RDF printing + Sratom* sratom; ///< Atom serialiser + Sratom* ui_sratom; ///< Atom serialiser for UI thread + Symap* symap; ///< URI map + ZixSem symap_lock; ///< Lock for URI map + JalvBackend* backend; ///< Audio system backend + ZixRing* ui_events; ///< Port events from UI + ZixRing* plugin_events; ///< Port events from plugin + void* ui_event_buf; ///< Buffer for reading UI port events + JalvWorker worker; ///< Worker thread implementation + JalvWorker state_worker; ///< Synchronous worker for state restore + ZixSem work_lock; ///< Lock for plugin work() method + ZixSem done; ///< Exit semaphore + ZixSem paused; ///< Paused signal from process thread + JalvPlayState play_state; ///< Current play state + char* temp_dir; ///< Temporary plugin state directory + char* save_dir; ///< Plugin save directory + const LilvPlugin* plugin; ///< Plugin class (RDF data) + LilvState* preset; ///< Current preset + LilvUIs* uis; ///< All plugin UIs (RDF data) + const LilvUI* ui; ///< Plugin UI (RDF data) + const LilvNode* ui_type; ///< Plugin UI type (unwrapped) + LilvInstance* instance; ///< Plugin instance (shared library) +#ifdef HAVE_SUIL + SuilHost* ui_host; ///< Plugin UI host support + SuilInstance* ui_instance; ///< Plugin UI instance (shared library) +#endif + void* window; ///< Window (if applicable) + struct Port* ports; ///< Port array of size num_ports + Controls controls; ///< Available plugin controls + uint32_t block_length; ///< Audio buffer size (block length) + size_t midi_buf_size; ///< Size of MIDI port buffers + uint32_t control_in; ///< Index of control input port + uint32_t num_ports; ///< Size of the two following arrays: + uint32_t plugin_latency; ///< Latency reported by plugin (if any) + float ui_update_hz; ///< Frequency of UI updates + uint32_t sample_rate; ///< Sample rate + uint32_t event_delta_t; ///< Frames since last update sent to UI + uint32_t position; ///< Transport position in frames + float bpm; ///< Transport tempo in beats per minute + bool rolling; ///< Transport speed (0=stop, 1=play) + bool buf_size_set; ///< True iff buffer size callback fired + bool exit; ///< True iff execution is finished + bool has_ui; ///< True iff a control UI is present + bool request_update; ///< True iff a plugin update is needed + bool safe_restore; ///< Plugin restore() is thread-safe + JalvFeatures features; + const LV2_Feature** feature_list; +}; + +int +jalv_open(Jalv* jalv, int argc, char** argv); + +int +jalv_init(int* argc, char*** argv, JalvOptions* opts); + +int +jalv_close(Jalv* jalv); + +JalvBackend* +jalv_backend_init(Jalv* jalv); + +void +jalv_backend_activate(Jalv* jalv); + +void +jalv_backend_deactivate(Jalv* jalv); + +void +jalv_backend_close(Jalv* jalv); + +/** Expose a port to the system (if applicable) and connect it to its buffer. */ +void +jalv_backend_activate_port(Jalv* jalv, uint32_t port_index); + +void +jalv_create_ports(Jalv* jalv); + +void +jalv_allocate_port_buffers(Jalv* jalv); + +struct Port* +jalv_port_by_symbol(Jalv* jalv, const char* sym); + +void +jalv_create_controls(Jalv* jalv, bool writable); + +ControlID* +jalv_control_by_symbol(Jalv* jalv, const char* sym); + +void +jalv_set_control(const ControlID* control, + uint32_t size, + LV2_URID type, + const void* body); + +const char* +jalv_native_ui_type(void); + +bool +jalv_discover_ui(Jalv* jalv); + +int +jalv_open_ui(Jalv* jalv); + +void +jalv_init_ui(Jalv* jalv); + +int +jalv_close_ui(Jalv* jalv); + +void +jalv_ui_instantiate(Jalv* jalv, + const char* native_ui_type, + void* parent); + +bool +jalv_ui_is_resizable(Jalv* jalv); + +void +jalv_ui_write(void* const controller, + uint32_t port_index, + uint32_t buffer_size, + uint32_t protocol, + const void* buffer); + +void +jalv_apply_ui_events(Jalv* jalv, uint32_t nframes); + +uint32_t +jalv_ui_port_index(void* const controller, const char* symbol); + +void +jalv_ui_port_event(Jalv* jalv, + uint32_t port_index, + uint32_t buffer_size, + uint32_t protocol, + const void* buffer); + +bool +jalv_send_to_ui(Jalv* jalv, + uint32_t port_index, + uint32_t type, + uint32_t size, + const void* body); +bool +jalv_run(Jalv* jalv, uint32_t nframes); + +bool +jalv_update(Jalv* jalv); + +int +jalv_ui_resize(Jalv* jalv, int width, int height); + +typedef int (*PresetSink)(Jalv* jalv, + const LilvNode* node, + const LilvNode* title, + void* data); + +int +jalv_load_presets(Jalv* jalv, PresetSink sink, void* data); + +int +jalv_unload_presets(Jalv* jalv); + +int +jalv_apply_preset(Jalv* jalv, const LilvNode* preset); + +int +jalv_delete_current_preset(Jalv* jalv); + +int +jalv_save_preset(Jalv* jalv, + const char* dir, + const char* uri, + const char* label, + const char* filename); + +void +jalv_save(Jalv* jalv, const char* dir); + +void +jalv_save_port_values(Jalv* jalv, + SerdWriter* writer, + const SerdNode* subject); +char* +jalv_make_path(LV2_State_Make_Path_Handle handle, + const char* path); + +void +jalv_apply_state(Jalv* jalv, LilvState* state); + +char* +atom_to_turtle(LV2_URID_Unmap* unmap, + const SerdNode* subject, + const SerdNode* predicate, + const LV2_Atom* atom); + +static inline void +jalv_print_control(Jalv* jalv, const struct Port* port, float value) +{ + const LilvNode* sym = lilv_port_get_symbol(jalv->plugin, port->lilv_port); + printf("%s = %f\n", lilv_node_as_string(sym), value); +} + +static inline char* +jalv_strdup(const char* str) +{ + const size_t len = strlen(str); + char* copy = (char*)malloc(len + 1); + memcpy(copy, str, len + 1); + return copy; +} + +static inline char* +jalv_strjoin(const char* a, const char* b) +{ + const size_t a_len = strlen(a); + const size_t b_len = strlen(b); + char* const out = (char*)malloc(a_len + b_len + 1); + + memcpy(out, a, a_len); + memcpy(out + a_len, b, b_len); + out[a_len + b_len] = '\0'; + + return out; +} + +int +jalv_printf(LV2_Log_Handle handle, + LV2_URID type, + const char* fmt, ...); + +int +jalv_vprintf(LV2_Log_Handle handle, + LV2_URID type, + const char* fmt, + va_list ap); + +static inline bool +jalv_ansi_start(FILE* stream, int color) +{ +#ifdef HAVE_ISATTY + if (isatty(fileno(stream))) { + return fprintf(stream, "\033[0;%dm", color); + } +#endif + return 0; +} + +static inline void +jalv_ansi_reset(FILE* stream) +{ +#ifdef HAVE_ISATTY + if (isatty(fileno(stream))) { + fprintf(stream, "\033[0m"); + fflush(stream); + } +#endif +} + +#ifdef __cplusplus +} // extern "C" +#endif + +#endif // JALV_INTERNAL_H |