diff options
Diffstat (limited to 'plugins/eg-metro.lv2/metro.c')
| -rw-r--r-- | plugins/eg-metro.lv2/metro.c | 51 |
1 files changed, 19 insertions, 32 deletions
diff --git a/plugins/eg-metro.lv2/metro.c b/plugins/eg-metro.lv2/metro.c index 46ca41b..e60a33f 100644 --- a/plugins/eg-metro.lv2/metro.c +++ b/plugins/eg-metro.lv2/metro.c @@ -1,28 +1,14 @@ -/* - LV2 Metronome Example Plugin - Copyright 2012-2016 David Robillard <d@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. -*/ - -#include "lv2/atom/atom.h" -#include "lv2/atom/util.h" -#include "lv2/core/lv2.h" -#include "lv2/core/lv2_util.h" -#include "lv2/log/log.h" -#include "lv2/log/logger.h" -#include "lv2/time/time.h" -#include "lv2/urid/urid.h" +// Copyright 2012-2016 David Robillard <d@drobilla.net> +// SPDX-License-Identifier: ISC + +#include <lv2/atom/atom.h> +#include <lv2/atom/util.h> +#include <lv2/core/lv2.h> +#include <lv2/core/lv2_util.h> +#include <lv2/log/log.h> +#include <lv2/log/logger.h> +#include <lv2/time/time.h> +#include <lv2/urid/urid.h> #include <math.h> #include <stdbool.h> @@ -212,7 +198,8 @@ static void play(Metro* self, uint32_t begin, uint32_t end) { float* const output = self->ports.output; - const uint32_t frames_per_beat = 60.0f / self->bpm * self->rate; + const uint32_t frames_per_beat = (uint32_t)(60.0f / self->bpm * self->rate); + const float attack_den = self->attack_len ? (float)self->attack_len : 1.0f; if (self->speed == 0.0f) { memset(output, 0, (end - begin) * sizeof(float)); @@ -223,8 +210,8 @@ play(Metro* self, uint32_t begin, uint32_t end) switch (self->state) { case STATE_ATTACK: // Amplitude increases from 0..1 until attack_len - output[i] = self->wave[self->wave_offset] * self->elapsed_len / - (float)self->attack_len; + output[i] = + self->wave[self->wave_offset] * (float)self->elapsed_len / attack_den; if (self->elapsed_len >= self->attack_len) { self->state = STATE_DECAY; } @@ -289,7 +276,7 @@ update_position(Metro* self, const LV2_Atom_Object* obj) const float frames_per_beat = (float)(60.0 / self->bpm * self->rate); const float bar_beats = ((LV2_Atom_Float*)beat)->body; const float beat_beats = bar_beats - floorf(bar_beats); - self->elapsed_len = beat_beats * frames_per_beat; + self->elapsed_len = (uint32_t)(beat_beats * frames_per_beat); if (self->elapsed_len < self->attack_len) { self->state = STATE_ATTACK; } else if (self->elapsed_len < self->attack_len + self->decay_len) { @@ -313,7 +300,7 @@ run(LV2_Handle instance, uint32_t sample_count) !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(self, last_t, ev->time.frames); + play(self, last_t, (uint32_t)ev->time.frames); // Check if this event is an Object // (or deprecated Blank to tolerate old hosts) @@ -327,7 +314,7 @@ run(LV2_Handle instance, uint32_t sample_count) } // Update time for next iteration and move to next event - last_t = ev->time.frames; + last_t = (uint32_t)ev->time.frames; } // Play for remainder of cycle @@ -346,7 +333,7 @@ static const LV2_Descriptor descriptor = { }; LV2_SYMBOL_EXPORT const LV2_Descriptor* - lv2_descriptor(uint32_t index) +lv2_descriptor(uint32_t index) { return index == 0 ? &descriptor : NULL; } |