aboutsummaryrefslogtreecommitdiffstats
path: root/plugins/eg-fifths.lv2/fifths.c
diff options
context:
space:
mode:
Diffstat (limited to 'plugins/eg-fifths.lv2/fifths.c')
-rw-r--r--plugins/eg-fifths.lv2/fifths.c235
1 files changed, 113 insertions, 122 deletions
diff --git a/plugins/eg-fifths.lv2/fifths.c b/plugins/eg-fifths.lv2/fifths.c
index bafd0d9..7527895 100644
--- a/plugins/eg-fifths.lv2/fifths.c
+++ b/plugins/eg-fifths.lv2/fifths.c
@@ -31,40 +31,35 @@
#include <stdio.h>
#include <stdlib.h>
-enum {
- FIFTHS_IN = 0,
- FIFTHS_OUT = 1
-};
+enum { FIFTHS_IN = 0, FIFTHS_OUT = 1 };
typedef struct {
- // Features
- LV2_URID_Map* map;
- LV2_Log_Logger logger;
+ // Features
+ LV2_URID_Map* map;
+ LV2_Log_Logger logger;
- // Ports
- const LV2_Atom_Sequence* in_port;
- LV2_Atom_Sequence* out_port;
+ // Ports
+ const LV2_Atom_Sequence* in_port;
+ LV2_Atom_Sequence* out_port;
- // URIs
- FifthsURIs uris;
+ // URIs
+ FifthsURIs uris;
} Fifths;
static void
-connect_port(LV2_Handle instance,
- uint32_t port,
- void* data)
+connect_port(LV2_Handle instance, uint32_t port, void* data)
{
- Fifths* self = (Fifths*)instance;
- switch (port) {
- case FIFTHS_IN:
- self->in_port = (const LV2_Atom_Sequence*)data;
- break;
- case FIFTHS_OUT:
- self->out_port = (LV2_Atom_Sequence*)data;
- break;
- default:
- break;
- }
+ Fifths* self = (Fifths*)instance;
+ switch (port) {
+ case FIFTHS_IN:
+ self->in_port = (const LV2_Atom_Sequence*)data;
+ break;
+ case FIFTHS_OUT:
+ self->out_port = (LV2_Atom_Sequence*)data;
+ break;
+ default:
+ break;
+ }
}
static LV2_Handle
@@ -73,119 +68,115 @@ instantiate(const LV2_Descriptor* descriptor,
const char* path,
const LV2_Feature* const* features)
{
- // Allocate and initialise instance structure.
- Fifths* self = (Fifths*)calloc(1, sizeof(Fifths));
- if (!self) {
- return NULL;
- }
-
- // Scan host features for URID map
- // clang-format off
- const char* missing = lv2_features_query(
- features,
- LV2_LOG__log, &self->logger.log, false,
- LV2_URID__map, &self->map, true,
- NULL);
- // clang-format on
-
- lv2_log_logger_set_map(&self->logger, self->map);
- if (missing) {
- lv2_log_error(&self->logger, "Missing feature <%s>\n", missing);
- free(self);
- return NULL;
- }
-
- map_fifths_uris(self->map, &self->uris);
-
- return (LV2_Handle)self;
+ // Allocate and initialise instance structure.
+ Fifths* self = (Fifths*)calloc(1, sizeof(Fifths));
+ if (!self) {
+ return NULL;
+ }
+
+ // Scan host features for URID map
+ // clang-format off
+ const char* missing = lv2_features_query(
+ features,
+ LV2_LOG__log, &self->logger.log, false,
+ LV2_URID__map, &self->map, true,
+ NULL);
+ // clang-format on
+
+ lv2_log_logger_set_map(&self->logger, self->map);
+ if (missing) {
+ lv2_log_error(&self->logger, "Missing feature <%s>\n", missing);
+ free(self);
+ return NULL;
+ }
+
+ map_fifths_uris(self->map, &self->uris);
+
+ return (LV2_Handle)self;
}
static void
cleanup(LV2_Handle instance)
{
- free(instance);
+ free(instance);
}
static void
-run(LV2_Handle instance,
- uint32_t sample_count)
+run(LV2_Handle instance, uint32_t sample_count)
{
- Fifths* self = (Fifths*)instance;
- FifthsURIs* uris = &self->uris;
-
- // Struct for a 3 byte MIDI event, used for writing notes
- typedef struct {
- LV2_Atom_Event event;
- uint8_t msg[3];
- } MIDINoteEvent;
-
- // Initially self->out_port contains a Chunk with size set to capacity
-
- // Get the capacity
- const uint32_t out_capacity = self->out_port->atom.size;
-
- // Write an empty Sequence header to the output
- lv2_atom_sequence_clear(self->out_port);
- self->out_port->atom.type = self->in_port->atom.type;
-
- // Read incoming events
- LV2_ATOM_SEQUENCE_FOREACH(self->in_port, ev) {
- if (ev->body.type == uris->midi_Event) {
- const uint8_t* const msg = (const uint8_t*)(ev + 1);
- switch (lv2_midi_message_type(msg)) {
- case LV2_MIDI_MSG_NOTE_ON:
- case LV2_MIDI_MSG_NOTE_OFF:
- // Forward note to output
- lv2_atom_sequence_append_event(
- self->out_port, out_capacity, ev);
-
- if (msg[1] <= 127 - 7) {
- // Make a note one 5th (7 semitones) higher than input
- MIDINoteEvent fifth;
-
- // Could simply do fifth.event = *ev here instead...
- fifth.event.time.frames = ev->time.frames; // Same time
- fifth.event.body.type = ev->body.type; // Same type
- fifth.event.body.size = ev->body.size; // Same size
-
- fifth.msg[0] = msg[0]; // Same status
- fifth.msg[1] = msg[1] + 7; // Pitch up 7 semitones
- fifth.msg[2] = msg[2]; // Same velocity
-
- // Write 5th event
- lv2_atom_sequence_append_event(
- self->out_port, out_capacity, &fifth.event);
- }
- break;
- default:
- // Forward all other MIDI events directly
- lv2_atom_sequence_append_event(
- self->out_port, out_capacity, ev);
- break;
- }
- }
- }
+ Fifths* self = (Fifths*)instance;
+ FifthsURIs* uris = &self->uris;
+
+ // Struct for a 3 byte MIDI event, used for writing notes
+ typedef struct {
+ LV2_Atom_Event event;
+ uint8_t msg[3];
+ } MIDINoteEvent;
+
+ // Initially self->out_port contains a Chunk with size set to capacity
+
+ // Get the capacity
+ const uint32_t out_capacity = self->out_port->atom.size;
+
+ // Write an empty Sequence header to the output
+ lv2_atom_sequence_clear(self->out_port);
+ self->out_port->atom.type = self->in_port->atom.type;
+
+ // Read incoming events
+ LV2_ATOM_SEQUENCE_FOREACH (self->in_port, ev) {
+ if (ev->body.type == uris->midi_Event) {
+ const uint8_t* const msg = (const uint8_t*)(ev + 1);
+ switch (lv2_midi_message_type(msg)) {
+ case LV2_MIDI_MSG_NOTE_ON:
+ case LV2_MIDI_MSG_NOTE_OFF:
+ // Forward note to output
+ lv2_atom_sequence_append_event(self->out_port, out_capacity, ev);
+
+ if (msg[1] <= 127 - 7) {
+ // Make a note one 5th (7 semitones) higher than input
+ MIDINoteEvent fifth;
+
+ // Could simply do fifth.event = *ev here instead...
+ fifth.event.time.frames = ev->time.frames; // Same time
+ fifth.event.body.type = ev->body.type; // Same type
+ fifth.event.body.size = ev->body.size; // Same size
+
+ fifth.msg[0] = msg[0]; // Same status
+ fifth.msg[1] = msg[1] + 7; // Pitch up 7 semitones
+ fifth.msg[2] = msg[2]; // Same velocity
+
+ // Write 5th event
+ lv2_atom_sequence_append_event(
+ self->out_port, out_capacity, &fifth.event);
+ }
+ break;
+ default:
+ // Forward all other MIDI events directly
+ lv2_atom_sequence_append_event(self->out_port, out_capacity, ev);
+ break;
+ }
+ }
+ }
}
static const void*
extension_data(const char* uri)
{
- return NULL;
+ return NULL;
}
-static const LV2_Descriptor descriptor = {
- EG_FIFTHS_URI,
- instantiate,
- connect_port,
- NULL, // activate,
- run,
- NULL, // deactivate,
- cleanup,
- extension_data
-};
+static const LV2_Descriptor descriptor = {EG_FIFTHS_URI,
+ instantiate,
+ connect_port,
+ NULL, // activate,
+ run,
+ NULL, // deactivate,
+ cleanup,
+ extension_data};
LV2_SYMBOL_EXPORT
-const LV2_Descriptor* lv2_descriptor(uint32_t index)
+const LV2_Descriptor*
+lv2_descriptor(uint32_t index)
{
- return index == 0 ? &descriptor : NULL;
+ return index == 0 ? &descriptor : NULL;
}