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-rw-r--r--plugins/eg-metro.lv2/metro.c44
1 files changed, 20 insertions, 24 deletions
diff --git a/plugins/eg-metro.lv2/metro.c b/plugins/eg-metro.lv2/metro.c
index f196474..cd7dfdb 100644
--- a/plugins/eg-metro.lv2/metro.c
+++ b/plugins/eg-metro.lv2/metro.c
@@ -15,10 +15,6 @@
OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
-/**
- @file metro.c Metronome Plugin
-*/
-
#include <math.h>
#include <stdio.h>
#include <stdlib.h>
@@ -135,7 +131,7 @@ instantiate(const LV2_Descriptor* descriptor,
return NULL;
}
- /* Scan host features for URID map */
+ /** Scan host features for URID map */
LV2_URID_Map* map = NULL;
for (int i = 0; features[i]; ++i) {
if (!strcmp(features[i]->URI, LV2_URID_URI "#map")) {
@@ -148,7 +144,7 @@ instantiate(const LV2_Descriptor* descriptor,
return NULL;
}
- /* Map URIS */
+ /** Map URIS */
MetroURIs* const uris = &self->uris;
self->map = map;
uris->atom_Blank = map->map(map->handle, LV2_ATOM__Blank);
@@ -161,14 +157,14 @@ instantiate(const LV2_Descriptor* descriptor,
uris->time_beatsPerMinute = map->map(map->handle, LV2_TIME__beatsPerMinute);
uris->time_speed = map->map(map->handle, LV2_TIME__speed);
- /* Initialise fields */
+ /** Initialise fields */
self->rate = rate;
self->bpm = 120.0f;
self->attack_len = attack_s * rate;
self->decay_len = decay_s * rate;
self->state = STATE_OFF;
- /* Generate one cycle of a sine wave at the desired frequency. */
+ /** Generate one cycle of a sine wave at the desired frequency. */
const double freq = 440.0 * 2.0;
const double amp = 0.5;
self->wave_len = rate / freq;
@@ -200,7 +196,7 @@ play(Metro* self, uint32_t begin, uint32_t end)
for (uint32_t i = begin; i < end; ++i) {
switch (self->state) {
case STATE_ATTACK:
- /* Amplitude increases from 0..1 until attack_len */
+ /** Amplitude increases from 0..1 until attack_len */
output[i] = self->wave[self->wave_offset] *
self->elapsed_len / (float)self->attack_len;
if (self->elapsed_len >= self->attack_len) {
@@ -208,7 +204,7 @@ play(Metro* self, uint32_t begin, uint32_t end)
}
break;
case STATE_DECAY:
- /* Amplitude decreases from 1..0 until attack_len + decay_len */
+ /** Amplitude decreases from 1..0 until attack_len + decay_len */
output[i] = 0.0f;
output[i] = self->wave[self->wave_offset] *
(1 - ((self->elapsed_len - self->attack_len) /
@@ -221,10 +217,10 @@ play(Metro* self, uint32_t begin, uint32_t end)
output[i] = 0.0f;
}
- /* We continuously play the sine wave regardless of envelope */
+ /** We continuously play the sine wave regardless of envelope */
self->wave_offset = (self->wave_offset + 1) % self->wave_len;
- /* Update elapsed time and start attack if necessary */
+ /** Update elapsed time and start attack if necessary */
if (++self->elapsed_len == frames_per_beat) {
self->state = STATE_ATTACK;
self->elapsed_len = 0;
@@ -237,7 +233,7 @@ update_position(Metro* self, const LV2_Atom_Object* obj)
{
const MetroURIs* uris = &self->uris;
- /* Received new transport position/speed */
+ /** Received new transport position/speed */
LV2_Atom *beat = NULL, *bpm = NULL, *speed = NULL;
lv2_atom_object_get(obj,
uris->time_barBeat, &beat,
@@ -245,17 +241,17 @@ update_position(Metro* self, const LV2_Atom_Object* obj)
uris->time_speed, &speed,
NULL);
if (bpm && bpm->type == uris->atom_Float) {
- /* Tempo changed, update BPM */
+ /** Tempo changed, update BPM */
self->bpm = ((LV2_Atom_Float*)bpm)->body;
}
if (speed && speed->type == uris->atom_Float) {
- /* Speed changed, e.g. 0 (stop) to 1 (play) */
+ /** Speed changed, e.g. 0 (stop) to 1 (play) */
self->speed = ((LV2_Atom_Float*)speed)->body;
}
if (beat && beat->type == uris->atom_Float) {
- /* Received a beat position, synchronize.
- This is a simple hard sync that may cause clicks.
- A real plugin would do something more graceful.
+ /** Received a beat position, synchronise.
+ This is a simple hard sync that may cause clicks.
+ A real plugin would do something more graceful.
*/
const float frames_per_beat = 60.0f / self->bpm * self->rate;
const float bar_beats = ((LV2_Atom_Float*)beat)->body;
@@ -277,36 +273,36 @@ run(LV2_Handle instance, uint32_t sample_count)
Metro* self = (Metro*)instance;
const MetroURIs* uris = &self->uris;
- /* Empty notify output for now */
+ /** Empty notify output for now */
LV2_Atom_Sequence* notify = self->ports.notify;
notify->atom.type = self->uris.atom_Sequence;
notify->atom.size = sizeof(LV2_Atom_Sequence_Body);
notify->body.unit = notify->body.pad = 0;
- /* Work forwards in time frame by frame, handling events as we go */
+ /** Work forwards in time frame by frame, handling events as we go */
const LV2_Atom_Sequence* in = self->ports.control;
uint32_t last_t = 0;
for (LV2_Atom_Event* ev = lv2_atom_sequence_begin(&in->body);
!lv2_atom_sequence_is_end(&in->body, in->atom.size, ev);
ev = lv2_atom_sequence_next(ev)) {
- /* Play the click for the time slice from last_t until now */
+ /** Play the click for the time slice from last_t until now */
play(self, last_t, ev->time.frames);
if (ev->body.type == uris->atom_Blank) {
const LV2_Atom_Object* obj = (LV2_Atom_Object*)&ev->body;
if (obj->body.otype == uris->time_Position) {
- /* Received position information, update */
+ /** Received position information, update */
update_position(self, obj);
}
}
- /* Update time for next iteration and move to next event*/
+ /** Update time for next iteration and move to next event*/
last_t = ev->time.frames;
ev = lv2_atom_sequence_next(ev);
}
- /* Play for remainder of cycle */
+ /** Play for remainder of cycle */
play(self, last_t, sample_count);
}
generated by cgit v1.2.1 (git 2.18.0) at 2024-11-12 22:51:17 +0000