tentative bw_note_queue + beginning of bw_voice(_alloc)

include/bw_note_queue.h

@@ -0,0 +1,129 @@
+/*
+ * Brickworks
+ *
+ * Copyright (C) 2023 Orastron Srl unipersonale
+ *
+ * Brickworks is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, version 3 of the License.
+ *
+ * Brickworks is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with Brickworks.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ * File author: Stefano D'Angelo
+ */
+
+/*!
+ *  module_type {{{ utility }}}
+ *  version {{{ 0.5.0 }}}
+ *  requires {{{ }}}
+ *  description {{{
+ *    Note queue.
+ *
+ *    ...
+ *  }}}
+ *  changelog {{{
+ *    <ul>
+ *      <li>Version <strong>0.5.0</strong>:
+ *        <ul>
+ *          <li>First release.</li>
+ *        </ul>
+ *      </li>
+ *    </ul>
+ *  }}}
+ */
+
+#ifndef _BW_NOTE_QUEUE_H
+#define _BW_NOTE_QUEUE_H
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/*! api {{{
+ *    #### bw_note_queue_status
+ *  ```>>> */
+struct _bw_note_queue_status {
+	char		pressed;
+	float		velocity;
+};
+typedef struct _bw_note_queue_status bw_note_queue_status;
+/*! <<<```
+ *    #### bw_note_queue_event
+ *  ```>>> */
+struct _bw_note_queue_event {
+	unsigned char		note;
+	bw_note_queue_status	status;
+	char			went_off;
+};
+typedef struct _bw_note_queue_event bw_note_queue_event;
+/*! <<<```
+ *    #### bw_note_queue
+ *  ```>>> */
+struct _bw_note_queue {
+	bw_note_queue_event	events[128];
+	unsigned char		n_events;
+	bw_note_queue_status	status[128];
+	unsigned char		n_pressed;
+};
+typedef struct _bw_note_queue bw_note_queue;
+/*! <<<```
+ *    #### bw_note_queue_reset()
+ *  ```>>> */
+static inline void bw_note_queue_reset(bw_note_queue *queue);
+/*! <<<```
+ *    #### bw_note_queue_clear()
+ *  ```>>> */
+static inline void bw_note_queue_clear(bw_note_queue *queue);
+/*! <<<```
+ *    #### bw_note_queue_add()
+ *  ```>>> */
+static inline void bw_note_queue_add(bw_note_queue *queue, unsigned char note, char pressed, float velocity, char force_went_off);
+
+/*** Implementation ***/
+
+/* WARNING: This part of the file is not part of the public API. Its content may
+ * change at any time in future versions. Please, do not use it directly. */
+
+static inline void bw_note_queue_reset(bw_note_queue *queue) {
+	for (char i = 0; i < 128; i++)
+		queue->status[i] = { 0, 0.f };
+	queue->n_pressed = 0;
+}
+
+static inline void bw_note_queue_clear(bw_note_queue *queue) {
+	queue->n_events = 0;
+}
+
+static inline void bw_note_queue_add(bw_note_queue *queue, unsigned char note, char pressed, float velocity, char force_went_off) {
+	if (!pressed && !queue->status[note].pressed)
+		return;
+
+	unsigned char i;
+	for (i = 0; i < queue->n_events; i++)
+		if (queue->events[i].note == note)
+			break;
+	char went_off = 0;
+	if (i == queue->n_events)
+		queue->n_events++;
+	else
+		went_off = queue->events[i].went_off || queue->events[i].velocity <= 0.f;
+
+	queue->events[i] = { note, { pressed, velocity }, went_off || force_went_off };
+	if (pressed && !queue->status[note].pressed)
+		queue->n_pressed++;
+	else if (!pressed && queue->status[note].pressed)
+		queue->n_pressed--;
+	queue->status[note] = { pressed, velocity };
+}
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif

include/bw_voice.h

@@ -0,0 +1,23 @@
+/*
+ * Brickworks
+ *
+ * Copyright (C) 2023 Orastron Srl unipersonale
+ *
+ * Brickworks is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, version 3 of the License.
+ *
+ * Brickworks is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with Brickworks.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ * File author: Stefano D'Angelo
+ */
+
+struct _bw_voice {
+};
+typedef struct _bw_voice bw_voice;

include/bw_voice_alloc.h

@@ -0,0 +1,47 @@
+/*
+ * Brickworks
+ *
+ * Copyright (C) 2023 Orastron Srl unipersonale
+ *
+ * Brickworks is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, version 3 of the License.
+ *
+ * Brickworks is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with Brickworks.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ * File author: Stefano D'Angelo
+ */
+
+#include <bw_note_queue.h>
+#include <bw_voice.h>
+
+typedef struct _bw_voice_alloc bw_voice_alloc;
+
+void bw_voice_alloc_reset(bw_voice_alloc *voice_alloc);
+
+void bw_voice_alloc_process(bw_voice_alloc *voice_alloc, bw_note_queue *queue);
+
+void bw_voice_alloc_set_unison(bw_voice_alloc *voice_alloc, char value);
+
+struct _bw_voice_alloc {
+	bw_voice *voices;
+	int n_voices;
+
+	char unison;
+};
+
+void bw_voice_alloc_reset(bw_voice_alloc *voice_alloc) {
+}
+
+void bw_voice_alloc_process(bw_voice_alloc *voice_alloc, bw_note_queue *queue) {
+}
+
+void bw_voice_alloc_set_unison(bw_voice_alloc *voice_alloc, char value) {
+	voice_alloc->unison = value;
+}